JP2002061444A - Door stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a door stopper, in which the displacement of a permanent magnet on the surface of a door can be prevented surely and which can be mounted and demounted easily to and from the door as required, in the door stopper utilizing the permanent magnet as a fixing means to the door. SOLUTION: The door stopper is composed of a mounting base, to which the permanent magnet attractable and separable to and from the door is installed on the door opposite-surface side, a bracing leg, in which a base end section is secured to the mounting base in a rockable manner in the vertical direction and the state, in which a front end section is grounded on a floor face, and the state, in which the front end section is separated from the floor face, can be changed over by the rocking operation of the base end section and which prevents movement in the direction that the door is closed under the state in which the front end section is grounded on the floor face, and a fine foaming resin sheet, which has a leg-section holding means being set up near the base end section of the bracing leg and holding the state, in which the front end section of the leg is separated from the floor face, and in which a displacement preventive sheet is mounted on the door opposite-surface side of the permanent magnet and each foamed hole bored to a sheet surface has a sucker function in the displacement preventive sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door stopper, and more particularly, to a door stopper using a permanent magnet as a means for fixing to a door. The present invention also relates to a door stopper that can be easily attached to and detached from a door as needed.

[0002]

2. Description of the Related Art Conventionally, there is a device called a door stopper as a device for stopping a door automatically closed by a door closer at an arbitrary opening. One example is shown in FIG. The conventional door stopper (40)
Permanent magnet (not shown) that can be attracted and separated from the door (41)
Is mounted on the mounting base (42) provided on the door facing surface side, and the base end is mounted on the mounting base (42) so as to be swingable in the vertical direction. A strut leg (43) that can take a plane-separated state, and a non-slip member (44) provided at the tip of the strut leg (43)
And leg holding means (not shown) provided near the base end of the strut leg (43) to maintain a state in which the tip end of the strut leg (43) is separated from the floor surface (45). It was composed of

When using the door stopper (40), first, a mounting base (42) is fixed by suction to a lower part of an iron or steel door (41) by a permanent magnet. At this time, the position of the mounting base (42) can be adjusted by attaching and detaching a permanent magnet to and from the door (41). When the door stopper (40) is attached to the door (41), the holding of the strut leg (43) is released by the leg holding means, and the strut leg (43) is rotated downward, so that the non-slip member (4)
4) is brought into contact with the floor surface (45). Thereby, the movement of the door (41) can be stopped at a desired opening degree.

[0004]

However, the above-mentioned prior art has the following problems. That is, since the conventional door stopper (40) has a fixed structure relying only on the magnetic force of the permanent magnet, the door stopper (4) is fixed to a steel or iron door (41), and then the door stopper (4) is fixed.
0) with a slight impact or force applied to the mounting base (4
In many cases, the position 2) was shifted. Permanent magnets have a large resistance to external forces in the direction of separating the magnet from the steel plate or iron plate, but resist external forces in the direction of the magnet sliding on the steel plate or iron plate. Is small. Accordingly, the holding state of the leg holding means is released, and the strut leg (43) is rapidly turned downward, so that the non-slip member (44) collides with the floor surface (45) or the door (41). ) Is applied to the door stopper (40), the permanent magnet is displaced from the initial position on the surface of the door (41), and as a result, the entire door stopper (40) is in the original position. There was a problem that it could not perform a sufficient stopper function due to deviation from the position.

The conventional door stopper (40)
In some cases, a soft vinyl chloride sheet for preventing displacement is provided on the side of the permanent magnet facing the door. However, this vinyl chloride sheet does not show sufficient resistance to the external force in the direction in which the permanent magnet is slid on the steel plate or iron plate, and also weakens the attractive force of the permanent magnet to the steel plate or iron plate. However, it did not function sufficiently as a member for preventing displacement of the permanent magnet.

The non-slip member (44) in the conventional door stopper (40) is a synthetic rubber member that covers the tip of the strut leg (43).
3) A peripheral surface portion covering the peripheral surface of the front end portion and a bottom surface portion provided at the lower end of the peripheral surface portion. However, since the tip of the strut leg (43) is in contact with the upper surface of the bottom surface of the non-slip member (44), the strut leg (43) becomes a core, and the non-slip member (44) is almost deformed. I couldn't. Therefore, when the floor surface (45) is inclined or when relatively large irregularities are formed on the floor surface (45), the lower surface of the non-slip member (44) is only in point contact with the floor surface (45). ) And cannot contact
As a result, the door leg (41) may be closed unexpectedly because the leg (43) cannot perform a sufficient tension function.

The present invention has been made in view of these circumstances, and in a door stopper using a permanent magnet as a means for fixing to a door, displacement of the permanent magnet on the door surface can be reliably prevented. Another object of the present invention is to provide a door stopper that can be easily attached to and detached from a door as needed.

[0008]

According to the first aspect of the present invention,
A mounting base provided with a permanent magnet that can be attracted and separated from the door on the side facing the door, and a base end is attached to this mounting base so as to be able to swing up and down, and the swinging operation makes the tip end part on the floor surface A strut leg that can be switched between a grounded state and a state separated from the floor surface and that prevents the door from moving in the closing direction when the floor surface is in a grounded state, and is provided near the base end of the strut leg. And a leg holding means for holding a state in which the tip of the projecting leg is separated from the floor surface, a slip prevention sheet is provided on the side of the permanent magnet facing the door, and the shift prevention sheet has A door stopper characterized in that each foam hole opened on the sheet surface is formed of a fine foam resin sheet having a sucker function.

[0009] In the invention according to claim 2, the strut legs are
A rod-shaped leg body, and a flexible non-slip member externally fitted to the tip of the leg body, the anti-slip member includes a tubular portion and a bottom portion provided at one end of the tubular portion. A compression coil spring extending in the axial direction from the distal end of the leg body is inserted into the cylindrical portion of the anti-slip member,
2. The door stopper according to claim 1, wherein the compression coil spring elastically supports a load applied to the leg body.

According to a third aspect of the present invention, in the second aspect, a ventilation groove extending in an axial direction of the cylindrical portion is formed on an inner peripheral surface of the cylindrical portion of the anti-slip member. It is a door stopper.

According to a fourth aspect of the present invention, the cylindrical portion of the anti-slip member has a thin portion extending in the circumferential direction at least in the entire circumferential direction or substantially half in the circumferential direction at the central portion in the axial direction. 3. The door stopper according to claim 2, wherein the extending thick part is a bellows structure wall which alternately appears in the axial direction of the cylindrical part. By providing these inventions, the above problems are completely solved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a door stopper according to the present invention will be described with reference to the drawings. FIG.
FIG. 2 is a perspective view showing a state where the door stopper according to the first embodiment is attached to the door. FIG. 2 is a partial cross-sectional view showing the vicinity of a mounting base of the door stopper shown in FIG.

[0013] Door stopper (1) according to the first embodiment
Has a mounting base (4) provided with a permanent magnet (3) on the side facing the door (2), a strut leg (5), and leg holding means (6). The shift prevention sheet (7) is provided on the door facing surface side of (3).
Hereinafter, these components will be sequentially described in detail.

The mounting base (4) is a door stopper (1)
For detachably attaching to the door (2). The mounting base (4) has, on one side thereof, a magnet holding portion (8) for holding the permanent magnet (3). Although the shape of the mounting base (4) is not particularly limited, for example, as shown in FIG. 1, the mounting base (4) can be formed in a substantially rectangular shape in a front view. In the example shown in FIG. 1, the mounting base (4) is provided with a bottom portion (2) supporting the bottom surface of the permanent magnet (3).
7) and a side surface (28) provided at each edge of the bottom surface (27) and supporting the side surface of the permanent magnet (3). The permanent magnet (3) is housed and held in the magnet housing and holding portion (8). In the housed state, the exposed surface of the permanent magnet (3) is in contact with the side surface (28) of the mounting base (4). Whether they are on the same plane (see FIG. 2) or
8) It is located slightly behind the tip surface. By positioning the exposed surface of the permanent magnet (3) slightly behind the end surface of the side surface (28) of the mounting base (4), strong magnetic force can be absorbed by the end surface of the side surface (28) where the lines of magnetic force are concentrated. Becomes

The permanent magnet (3) can be attracted to and separated from a door (2) made of iron, steel or the like. The permanent magnet (3) is fixed in the magnet accommodating and holding portion (8) of the mounting base (4) using an adhesive or the like, and is exposed on the opposite side of the holding, that is, is exposed. The surface faces the door (2). The shape of the permanent magnet (3) is not particularly limited, but may be, for example, a plate shape.

The slip preventing sheet (7) is made of a permanent magnet (3).
And mounting base (4) magnetized by permanent magnet (3)
When the front surface of the side portion (28) of the mounting base (4) is magnetically attracted to the door (2), the front surface of the side portion (28) of the mounting base (4) and the permanent magnet (3) are placed on the surface of the door (2). This is to prevent sliding and displacement on the same surface. As shown in the partially enlarged view of FIG. 3, the slip prevention sheet (7) is formed of a fine foamed resin sheet in which each foam hole (9) opened on the sheet surface has a sucker function. The size of the foaming hole (9) is not particularly limited as long as it is a size capable of sufficiently exerting the sucker function, but the opening diameter of the foaming hole (9) opened on the sheet surface is set to 20 to 200 μm. Preferably. Further, it is preferable that each foam hole (9) of the slip prevention sheet (7) is a closed cell. By using closed cells, a reliable sucker effect can be obtained.

The slip prevention sheet (7) made of the fine foamed resin sheet can reliably adhere to the surface having irregularities of various sizes from the micro level to the macro level by the excellent suction force of the micro sucker. And a very large resistance to the movement in the sliding direction with respect to the sucked plate surface. Moreover, since the slip prevention sheet (7) utilizes the suction cup action, it can be repeatedly attached to and detached from the surface of the door (2) many times. Also,
Even if the surface of the slip prevention sheet (7) becomes dirty with dust or dirt,
By wiping the dirt with a cloth such as a rag, the excellent suction effect can be maintained semi-permanently, and the above-described large resistance to the slide movement can be maintained semi-permanently.

The slip preventing sheet (7) may be composed of only a fine foamed resin sheet, or may have a structure in which the fine foamed resin sheet is laminated on the surface of the nonwoven fabric. By adopting a laminated structure with a nonwoven fabric, the strength of the displacement prevention sheet (7) can be increased and its breakage can be prevented. Further, the type of synthetic resin used as the material of the fine foamed resin sheet is not particularly limited, for example,
Acrylic resin can be used. Further, since the slip prevention sheet (7) is attached to the end face of the side surface (28) of the mounting base (4) and the surface of the permanent magnet (3), its thickness is reduced. ) Is set so as not to affect the magnetic attraction force of the side surface (28) of the side portion (28) and the permanent magnet (3).

The slip prevention sheet (7) is attached to the front end face of the side surface (28) of the mounting base (4) and the door facing surface of the permanent magnet (3) held on the mounting base (4). Therefore, when the mounting base (4) is mounted on the door (2), the permanent magnet (3) and the surface of the door (2) are located between the side surface (28) of the mounting base (4) and the surface of the door (2). The slip prevention sheets (7) are interposed between them. As described in the section of the problem to be solved by the invention, the magnet has a large resistance to an external force in a direction to separate the magnet from the steel plate or the iron plate. Has a small resistance to an external force in the direction in which it is slid. However, by using the slip prevention sheet (7) having a large resistance in the sliding direction together with the magnet, the side surface (2) of the magnetized mounting base (4) can be used.
8) It is possible to provide a sufficient resistance to an external force in a direction in which the tip surface and the permanent magnet (3) are slid on a steel plate or an iron plate. Therefore, the mounting base (4) and the permanent magnet (3) do not slide against the door (2) surface.

The stay leg (5) prevents the door (2) from moving in the closing direction by the frictional force with the floor (10) when the door (2) is kept open. Is what you do. The protruding leg (5) has a base end (11) attached to the mounting base (4) so as to be able to swing up and down, and by the swinging operation, a tip end (12) becomes a floor surface (10).
It is possible to switch between a state in which the floor is grounded and a state in which the floor is separated from the floor surface (10). The strut legs (5)
When the tip (12) is in contact with the floor (10), the door (2) is prevented from moving in the closing direction. The strut leg (5) includes a rod-shaped leg body (33),
A non-slip member (18) externally fitted to the tip (34) of the leg body (33). In the illustrated example, the tip (12) of the strut leg (5) is a non-slip member (18).

The structure of the leg body (33) is not particularly limited, but can be made of, for example, a rod-shaped hollow pipe material. In the illustrated example, an intermediate portion of the leg body (33) is curved, and a portion from the base end portion of the leg body (33) to the curved portion extends obliquely downward, and from the curved portion to the distal end portion ( The portion up to 34) can be extended in a substantially vertical direction. The base end (11) of the extension leg (5) is connected to a bearing hole (not shown) of a bearing member (13) having a U-shaped cross section provided on the mounting base (4) by a pivot shaft (15). It is mounted so as to be able to swing freely through. The bearing member (13) has a bottom portion (29) fixed on the mounting base (4) and two rising portions (3) rising from both edges of the bottom portion (29).
0), and the bearing hole is formed at the rising portion (30).
Is formed.

The distal end (34) of the leg body (33) has a tubular portion (16) and a tubular portion (1) as illustrated in FIG.
A flexible non-slip member (18) having a bottom portion (17) provided at one end of 6) is fitted around the outside. The non-slip member (18) is provided at the tip (12) of the strut (5).
Is prevented from slipping on the floor (10). In the cylindrical portion (16) of the anti-slip member (18), a compression coil spring (19) extending in the axial direction from the tip portion (34) of the leg body (33) (FIG. 4A) , FIG. 6). The compression coil spring (19) elastically supports the load that the leg body (33) receives from the door (2).

The tip (34) of the leg body (33) is shown in FIG.
As shown in FIG. 6A and FIG. 6, it has a hollow pipe shape, and the diameter is the same along the axial direction. The distal end (34) of the leg body (33) is inserted from the upper end to the middle part of the compression coil spring (19), and extends from the middle to the lower end of the leg body (33). It protrudes from the tip opening. The diameter of the compression coil spring (19) is the same along its axial direction.

The non-slip member (18) is made of a material such as synthetic rubber which has flexibility and can generate a large frictional force with the floor surface (10). As shown in FIG. 5, the anti-slip member (18) has a cylindrical portion (16) and a bottom portion (17), and has a bottom portion (1).
A spring fixing portion (20) to which the lower end portion of the compression coil spring (19) is fitted is formed to project from the upper surface of the central portion of (7).

Further, the cylindrical portion (1) of the non-slip member (18) is provided.
6) On the inner peripheral surface, one or a plurality of ventilation grooves (21) extending in the axial direction of the cylindrical portion (16) are formed at intervals. The leg body (33) receives a lateral force and a downward force from the door (2). The leg body (33) transmits the force to the non-slip member (18) via the compression coil spring (19). Compression coil spring (19) (FIG. 6)
(B) opposes the downward force received from the leg body (33) by the elastic force when contracted. The anti-slip member (18) is provided on the floor (10) (see FIG. 6B).
Against the lateral force received from the leg body (33). This prevents the door (2) from moving in the closing direction.

Further, since the ventilation groove (21) is formed in the non-slip member (18), the non-slip member (18) is formed.
When the leg body (33) is lowered inside, the air in the non-slip member (18) escapes to the outside through the ventilation groove (21). Therefore, even if a downward force is suddenly applied to the leg body (33), the compression coil spring (19) contracts quickly, and the impact can be sufficiently absorbed. Thereby, it is possible to prevent an excessive force from acting on the permanent magnet (3). When the tip (5) is flipped up and the tip (12) of the tip (5) is separated from the floor (10), the anti-slip member (1) is passed through the ventilation groove (21).
8) Since air flows into the compression coil spring (19)
And the non-slip member (18) can be quickly restored to the original shape. Therefore, when the door stopper (1) is used again by rotating the tension leg (5) downward, even if the reuse is immediately after the previous use, the compression coil spring (19) and the non-slip are used. The shape of the member (18) is completely restored to the original state. Thereby, even if the inclination direction and the inclination angle of the floor surface (10) are different from the last use,
The entire lower surface of the non-slip member (18) can be reliably brought into contact with the floor surface (10).

Leg holding means (6) (see FIGS. 1 and 2)
Is for maintaining a state in which the tip portion (12) of the strut leg (5) is separated from the floor surface (10). The leg holding means (6) is provided near the base end (11) of the strut leg (5). Although the structure of the leg holding means (6) is not particularly limited, for example, as shown in FIGS. 1 and 2, it can be constituted by an elastic member having a substantially U-shaped cross section. The leg holding means (6) in the illustrated example includes a mounting base (4).
A bottom part (31) fixed on the top, and this bottom part (31)
And two rising portions (32) rising from both edges of the rising portion (32), and the interval between the rising portions (32) is gradually narrowed from the base end side to the tip end side of the rising portion (32). Therefore, the projecting leg (5) can be held by the rising portion (32).

Next, a method of using the door stopper (1) according to the first embodiment will be described. First, the leg body (33) is attached to one side of the door (2) while confirming that the non-slip member (18) comes into contact with the floor surface (10) with the tip portion (34) of the leg body (33) standing substantially vertically. Attach the base (4). In the case of an inward opening door, the mounting base (4) is attached to the outdoor surface of the door (2). In the case of an outward opening door, the mounting base (4) is mounted on the indoor surface of the door (2). Attach. At this time, the surface having the sucker function of the slip prevention sheet (7) comes into contact with the surface of the door (2), and the side surface (2) of the mounting base (4) magnetized through the slip prevention sheet (7).
8) The tip surface and the permanent magnet (3) are magnetically attracted to the door (2) surface. Therefore, the mounting base (4) is
Movement in the direction away from the surface of the door (2) is reliably prevented by the magnetic force of the side surface (28) of the side surface (28) and the permanent magnet (3), and the surface of the door (2) is attracted by the attraction force of the slip prevention sheet (7). The movement in the direction along is reliably prevented.
When the door (2) is closed, the strut leg (5) is kept separated from the floor (10) by the leg holding means (6), that is, held up.

When stopping with the door (2) open, the holding of the strut (5) is released and the strut (5) is released.
Is rotated downward. A non-slip member (18) located at the tip (12) of the strut leg (5) abuts the floor surface (10). Although the compression coil spring (19) is initially in a natural length state as shown in FIG. 6 (a), the non-slip member (18) comes into contact with the floor surface (10) to apply a load from the leg body (33). When it is received, it shrinks as shown in FIG. Even if the pivoting leg (5) rotates rapidly downward and the anti-slip member (18) collides with the floor surface (10), the compression coil spring (19) reliably absorbs the impact. No excessive force acts on the mounting base (4). Also,
Even if a force for closing the door is suddenly applied to the leg body (33), the compression coil spring (19) can reliably absorb the impact.

Next, the second embodiment of the door stopper according to the present invention will be described.
An embodiment will be described. FIG. 7 is a cross-sectional view illustrating an example of the non-slip member (18) of the door stopper according to the second embodiment. FIG. 8 is a perspective view of the non-slip member (1) shown in FIG.
8) It is sectional drawing which shows the structure of the vicinity. FIG. 9 is a sectional view showing another example of the non-slip member (18) of the door stopper according to the second embodiment. FIG. 10 is a cross-sectional view showing the structure near the non-slip member (18) shown in FIG.

The difference between the door stopper according to the second embodiment and the first embodiment is that the non-slip member (18) is used.
The structure is as follows. The non-slip member (1) in the second embodiment
8) A thin wall portion of the cylindrical portion (16) extending at least approximately half in the circumferential direction at the center in the axial direction (see FIGS. 7 and 8) or the entire circumferential direction (see FIGS. 9 and 10). A bellows structure wall (24) in which (22) and a thick portion (23) extending in the circumferential direction alternately appear in the axial direction of the cylindrical portion (16).
It is a point that is. According to this structure, the anti-slip member (18) in a non-weighted state (FIG. 8A, FIG.
(A) comes into contact with the floor surface (10) and a load is applied to the non-slip member (18).
As shown in (b), the bellows structure wall (24) shrinks flexibly.
Therefore, even if the floor surface (10) is inclined, the leg body (3)
With the tip (34) of (3) standing in a substantially vertical direction, the entire lower surface of the bottom surface (17) of the anti-slip member (18) can be reliably brought into contact with the floor (10). Thereby, a sufficient frictional force can be generated between the floor (10) and the door (2), and the movement of the door (2) can be reliably prevented. When the bellows structure wall is formed in substantially the half in the circumferential direction of the cylindrical portion (16), the other half of the cylindrical portion (16) hardly shrinks, so that the tiltable angle of the lower surface of the non-slip member (18) is increased. It is possible to reliably cope with the case where the inclination of the floor (10) is large.

Next, a third embodiment of the door stopper according to the present invention will be described.
An embodiment will be described. FIG. 4B is a perspective view of the distal end portion (3) of the leg body (33) of the door stopper according to the third embodiment.
4) It is a partial cross-sectional view showing the structure in the vicinity. FIG. 11 shows a non-slip member (1) of the door stopper according to the third embodiment.
8) It is sectional drawing which shows the structure of the vicinity.

The difference between the door stopper according to the third embodiment and the above-described second embodiment is that the distal end portion (34) of the leg body (33), the compression coil spring (19), and the non-slip member (18) are provided. Structure. The distal end portion (34) of the leg body (33) in the third embodiment is a tapered hollow pipe portion whose diameter gradually increases toward the distal end side as shown in FIG. 4B. Also, a compression coil spring (19)
Is formed in a tapered shape whose diameter gradually increases from the upper end side to the lower end side. Also, a non-slip member (18)
As shown in FIG. 11, the inner peripheral surface of the cylindrical portion (16)
It is formed in a tapered shape whose diameter gradually increases from the upper end opening to the lower end.

According to this structure, the compression coil spring (1
In 9), since the diameter gradually increases toward the lower side, the lower side elastic force increases. Therefore, even if the spring is relatively short, the impact force received from the leg body (33) can be reliably absorbed. In addition, the leg body (33)
The tip (34) of the leg body (33) and the inner peripheral surface of the non-slip member (18) are both tapered so that the tip (34) of the leg body (33) is lowered in the non-slip member (18). The tip (34) and the non-slip member (18)
A gap (25) (see FIG. 11 (b)) is formed between the inner peripheral surfaces of the inner and outer peripheral surfaces. Therefore, the air in the non-slip member (18) is smoothly discharged through the gap (25), so that the compression coil spring (19) is rapidly contracted, and the impact force received from the leg body (33) is reduced. Absorption can be ensured. Further, when the anti-slip member (18) is separated from the floor surface (10) by flipping the strut leg (5) upward, air flows into the anti-slip member (18) through the gap (25). Therefore, the shapes of the non-slip member (18) and the compression coil spring (19) are quickly restored to the original state.

Next, the fourth embodiment of the door stopper according to the present invention will be described.
An embodiment will be described. FIG. 12 is a perspective view showing a state where the door stopper (1) according to the fourth embodiment is attached to the door (2).

Door stopper (1) according to the fourth embodiment
However, the difference from the first embodiment is that when the door (2) is made of a material that is not affected by the attraction of the magnet, for example, wood or synthetic resin, a device for attaching to the door (2) is elaborated. That is the point. The door stopper (1) according to the fourth embodiment is the same as the door stopper (1) according to the first embodiment, except that the permanent magnet (3) (see FIG. 2) is made of iron or the like via a slip prevention sheet (7). Magnetically attracted to the auxiliary mounting board (26) made of steel or the like,
6), an adhesive sheet (not shown) is provided on the side facing the door. According to this configuration, the mounting base (4) can be fixed to the surface of the door (2) by the adhesive sheet provided on the mounting auxiliary substrate (26). Further, since the slip prevention sheet (7) (see FIG. 2) is interposed between the permanent magnet (3) and the mounting auxiliary board (26), the permanent magnet (3) is positioned on the mounting auxiliary board (26). There is no gap.

Next, the effects of the present invention will be more specifically proved by introducing embodiments of the door stopper according to the present invention. Note that the configuration of the present invention is not limited to the following configuration at all.

[0038]

EXAMPLES <Tension test of mounting base of door stopper> (Example) The door stopper (1) according to the first embodiment was used. The mounting base (4) has a rectangular shape in a front view, and the outer periphery of the end surface of the side surface (28) has a length of 118 m.
m, the width was 30 mm, and the width of the front end face was 1.8 mm. The exposed surface of the permanent magnet (3) was positioned slightly behind the side surface (28) of the mounting base (4). The shape of the slip prevention sheet (7) is rectangular, and its size is 118 mm in length and 30 mm in width, which are the same as the outer circumference of the tip surface of the side portion (28) of the mounting base (4), and the thickness is 0.4 mm.
Met. The slip prevention sheet (7) was a fine foamed resin sheet made of an acrylic resin.

(Comparative Example 1) A door stopper having the same configuration as that of the example was used except that a soft vinyl chloride resin sheet having no foamed pores was used instead of the shift prevention sheet (7).
The size and shape of the soft vinyl chloride resin sheet were the same as those of the shift preventing sheet (7) of the example. (Comparative Example 2) A door stopper having the same configuration as that of the example except that the deviation prevention sheet (7) was not provided was used.

(Test Method) Tensile force required to separate the mounting base (4) from the door surface by fixing the door stoppers of the embodiment and the comparative example on the surface of the steel door, respectively (hereinafter referred to as the tensile force in the direction perpendicular to the surface). ), And the tensile force required to slide the mounting base (4) along the door surface (hereinafter, referred to as the in-plane tensile force).
In addition, 48 hours after each tensile force was fixed, 48
The measurement was performed for each of the samples after the passage of time. Table 1 shows the measurement results.

[Table 1]

(Consideration) As can be seen from Table 1, the tensile strength in the surface direction of the example is orders of magnitude larger than that of Comparative Example 1 and Comparative Example 2, and is about 3.4 times that of Comparative Example 1. It is about twice as large as Example 2. Further, the tensile force in the direction perpendicular to the surface of the example is significantly larger than that of the comparative example 1 and about 2.4 times as large as that of the comparative example 1, and is substantially the same as that of the comparative example 2. Accordingly, it can be seen that the slip prevention sheet (7) having the micro suction cup has a much superior in-plane movement inhibiting force as compared with the case where the soft vinyl chloride sheet is provided and the case where the sheet is not provided at all. Moreover, even if the displacement preventing sheet (7) is interposed between the mounting base (4) and the door (2), the magnetic attraction force is hardly impaired. In addition, it was found that by interposing the slip prevention sheet (7), even if the mounting base (4) was slid, the surface of the door (2) was not damaged at all. The in-plane tensile force of the example was 21.6 (kgf) after 24 hours, whereas it was 21.6 (kgf) after 48 hours.
2.3 (kgf). It is considered that this is because the micro suction cup of the slip prevention sheet (7) adheres to the door surface over time due to the force of the magnet, and the suction force further increases.

[0042]

According to the first aspect of the present invention, the surface having the sucker function of the slip preventing sheet abuts on the surface of the door, and the mounting base and the permanent magnet magnetized through the slip preventing sheet make contact with the door surface. Attracts magnetic force. Therefore, the mounting base is
Movement in the direction away from the door surface is reliably prevented by the magnetic force, and movement in the direction along the door surface is reliably prevented by the attraction force of the displacement prevention sheet. Also,
It can be fixed more firmly than when it is fixed with an adhesive tape, and the adhesive does not remain on the door surface after being removed as in the case of using an adhesive tape. Also, when detaching from the door, the strut can be easily removed by the principle of leverage by standing upright on the mounting base and moving it laterally.

According to a second aspect of the present invention, the projecting leg is
A rod-shaped leg body, and a flexible non-slip member externally fitted to the tip of the leg body, the anti-slip member includes a tubular portion and a bottom portion provided at one end of the tubular portion. A compression coil spring extending in the axial direction from the distal end of the leg body is inserted into the cylindrical portion of the anti-slip member,
Since the compression coil spring elastically supports the load applied to the leg body, the door stopper according to claim 1 has the following effects. That is, when the anti-slip member comes into contact with the floor surface and the leg body receives a load from the door, the compression coil spring contracts and opposes the load. Even if the anti-slip member collides with the floor surface, the compression coil spring will surely absorb the impact, so that excessive force will not act on the mounting base. Absent.
Further, even if a force for closing the door is suddenly applied to the leg body, the compression coil spring can reliably absorb the impact.

According to a third aspect of the present invention, in the second aspect, a ventilation groove extending in the axial direction of the cylindrical portion is formed on an inner peripheral surface of the cylindrical portion of the anti-slip member. The following effects can be obtained because the door stopper is used. That is, since the ventilation groove is formed in the non-slip member, when the leg body is lowered in the non-slip member, the air in the non-slip member escapes through the ventilation groove to the outside. Therefore, even if a downward force is suddenly applied to the leg body, the compression coil spring contracts quickly, and the impact can be sufficiently absorbed. Thereby, it is possible to prevent an excessive force from acting on the mounting base and the permanent magnet. In addition, when the strut leg is flipped upward and the tip of the strut leg is separated from the floor surface, air flows into the non-slip member through the ventilation groove, so that the compression coil spring and the non-slip member are restored to the original state. The shape can be quickly restored. Therefore, when using the door stopper again by rotating the tension leg downward, even if the reuse is immediately after the previous use, the shapes of the compression coil spring and the non-slip member are completely restored to the original state. Has been restored. Thereby, even if the inclination direction and the inclination angle of the floor surface are different from the last use, the entire lower surface of the non-slip member can be reliably brought into contact with the floor surface.

According to a fourth aspect of the present invention, the cylindrical portion of the anti-slip member has a thin portion extending in the circumferential direction at least in the axial direction at the center in the entire circumferential direction or substantially half in the circumferential direction. The door stopper according to claim 2, wherein the extending thick portion is a bellows structure wall which alternately appears in the axial direction of the cylindrical portion, and has the following effects. That is, since the bellows structure wall shrinks flexibly, even if the floor surface is inclined or the floor surface has relatively large irregularities, the entire lower surface of the non-slip member can be reliably brought into contact with the floor surface. . As a result, a sufficient frictional force can be generated with the floor surface, and the movement of the door can be reliably prevented. Further, when the bellows structure wall is formed in substantially the half in the circumferential direction of the non-slip member, the other half of the non-slip member hardly shrinks, so that the tiltable angle of the lower surface of the non-slip member can be increased, and the floor surface can be enlarged. Even if the inclination is large, it is possible to reliably cope with it.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where a door stopper according to a first embodiment of the present invention is attached to a door.

FIG. 2 is a partial cross-sectional view illustrating a vicinity of a mounting base of the door stopper illustrated in FIG. 1;

FIG. 3 is an enlarged perspective view showing a displacement prevention sheet according to the present invention.

FIGS. 4A and 4B are partial cross-sectional views illustrating a structure near a tip end of a strut leg according to the present invention. FIG. 4A is a diagram illustrating the same structure according to the first embodiment, and FIG. It is a figure showing the same structure.

5A and 5B are diagrams showing a structure of a non-slip member according to the first embodiment of the present invention, wherein FIG. 5A is a side view, FIG. 5B is a plan view, and FIG.

6A and 6B are cross-sectional views illustrating a structure near a non-slip member according to the first embodiment of the present invention. FIG. 6A is a diagram illustrating a state when the non-slip member is separated from a floor surface, and FIG. )
FIG. 4 is a diagram showing a state when a non-slip member is in contact with a floor surface.

FIG. 7 is a view showing an example of a structure of a non-slip member according to a second embodiment of the present invention, wherein (a) is a side view thereof,
(B) is a plan view thereof, and (c) is a longitudinal sectional view thereof.

8A and 8B are cross-sectional views illustrating a structure near a non-slip member illustrated in FIG. 7, in which FIG. 8A illustrates a state in which the non-slip member is separated from a floor surface, and FIG. It is a figure showing the state at the time of a stop member contacting a floor.

9A and 9B are diagrams showing another example of the non-slip member according to the second embodiment of the present invention, wherein FIG. 9A is a side view, FIG. 9B is a plan view, and FIG. is there.

10A and 10B are cross-sectional views illustrating a structure near a non-slip member illustrated in FIG. 9, in which FIG. 10A illustrates a state in which the non-slip member is separated from a floor surface, and FIG. It is a figure showing the state at the time of a stop member contacting a floor.

11A and 11B are cross-sectional views illustrating a structure near a non-slip member according to a third embodiment of the present invention. FIG. 11A illustrates a state when the non-slip member is separated from a floor surface, and FIG. )
FIG. 4 is a diagram showing a state when a non-slip member is in contact with a floor surface.

FIG. 12 is a perspective view showing a state where a door stopper according to a fourth embodiment of the present invention is attached to a door.

FIG. 13 is a view showing a state in which a conventional door stopper is attached to a door.

[Explanation of symbols]

 1 Door stopper 2 Door 3 Permanent magnet 4 Mounting base 5 Strut leg 6 Leg holding means 7 ····· Slip prevention sheet 9 ····· Foam hole 10 ······ Floor surface 11 ···································· 18 Non-slip member 19 Compression coil spring 21 Vent groove 22 Thin part 23 Thick part 24 Bellows Structural wall 33 ... Leg body

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] July 12, 2001 (2001.7.1)
2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Door stopper

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door stopper, and more particularly, to a door stopper using a permanent magnet as a means for fixing to a door. The present invention also relates to a door stopper that can be easily attached to and detached from a door as needed.

[0002]

2. Description of the Related Art Conventionally, there is a device called a door stopper as a device for stopping a door automatically closed by a door closer at an arbitrary opening. One example is shown in FIG. The conventional door stopper (40)
Permanent magnet (not shown) that can be attracted and separated from the door (41)
Is mounted on the mounting base (42) provided on the door facing surface side, and the base end is mounted on the mounting base (42) so as to be swingable in the vertical direction. A strut leg (43) that can take a plane-separated state, and a non-slip member (44) provided at the tip of the strut leg (43)
And leg holding means (not shown) provided near the base end of the strut leg (43) to maintain a state in which the tip end of the strut leg (43) is separated from the floor surface (45). It was composed of

When using the door stopper (40), first, a mounting base (42) is fixed by suction to a lower part of an iron or steel door (41) by a permanent magnet. At this time, the position of the mounting base (42) can be adjusted by attaching and detaching a permanent magnet to and from the door (41). When the door stopper (40) is attached to the door (41), the holding of the strut leg (43) is released by the leg holding means, and the strut leg (43) is rotated downward, so that the non-slip member (4)
4) is brought into contact with the floor surface (45). Thereby, the movement of the door (41) can be stopped at a desired opening degree.

[0004]

However, the above-mentioned prior art has the following problems. That is, since the conventional door stopper (40) has a fixed structure relying only on the magnetic force of the permanent magnet, the door stopper (4) is fixed to a steel or iron door (41), and then the door stopper (4) is fixed.
0) with a slight impact or force applied to the mounting base (4
In many cases, the position 2) was shifted. Permanent magnets have a large resistance to external forces in the direction of separating the magnet from the steel plate or iron plate, but resist external forces in the direction of the magnet sliding on the steel plate or iron plate. Is small. Accordingly, the holding state of the leg holding means is released, and the strut leg (43) is rapidly turned downward, so that the non-slip member (44) collides with the floor surface (45) or the door (41). ) Is applied to the door stopper (40), the permanent magnet is displaced from the initial position on the surface of the door (41), and as a result, the entire door stopper (40) is in the original position. There was a problem that it could not perform a sufficient stopper function due to deviation from the position.

The conventional door stopper (40)
In some cases, a soft vinyl chloride sheet for preventing displacement is provided on the side of the permanent magnet facing the door. However, this vinyl chloride sheet does not show sufficient resistance to the external force in the direction in which the permanent magnet is slid on the steel plate or iron plate, and also weakens the attractive force of the permanent magnet to the steel plate or iron plate. However, it did not function sufficiently as a member for preventing displacement of the permanent magnet.

The non-slip member (44) in the conventional door stopper (40) is a synthetic rubber member that covers the tip of the strut leg (43).
3) A peripheral surface portion covering the peripheral surface of the front end portion and a bottom surface portion provided at the lower end of the peripheral surface portion. However, since the tip of the strut leg (43) is in contact with the upper surface of the bottom surface of the non-slip member (44), the strut leg (43) becomes a core, and the non-slip member (44) is almost deformed. I couldn't. Therefore, when the floor surface (45) is inclined or when relatively large irregularities are formed on the floor surface (45), the lower surface of the non-slip member (44) is only in point contact with the floor surface (45). ) And cannot contact
As a result, the door leg (41) may be closed unexpectedly because the leg (43) cannot perform a sufficient tension function.

The present invention has been made in view of these circumstances, and in a door stopper using a permanent magnet as a means for fixing to a door, displacement of the permanent magnet on the door surface can be reliably prevented. Another object of the present invention is to provide a door stopper that can be easily attached to and detached from a door as needed.

[0008]

According to the first aspect of the present invention,
A mounting base provided with a permanent magnet that can be attracted and separated from the door on the side facing the door, and a base end is attached to this mounting base so as to be able to swing up and down, and the swinging operation makes the tip end part on the floor surface A strut leg that can be switched between a grounded state and a state separated from the floor surface and that prevents the door from moving in the closing direction when the floor surface is in a grounded state, and is provided near the base end of the strut leg. is the tip portion of the projecting tension leg and a leg portion holding means for holding a state of being spaced apart from the floor surface, displacement prevention sheet is provided on the door side facing the permanent magnet Rutotomo
The displacement prevention sheet, each foam hole which is open at the sheet surface is composed of fine foamed resin sheet having a suction cup function, the突張Riashi includes a leg body of the rod-like leg body of the tip portion
And a flexible non-slip member externally fitted to the
The stopper member has a cylindrical portion and a bottom provided at one end of the cylindrical portion.
And a surface portion, and inside the cylindrical portion of the anti-slip member,
A compression core extending axially from the tip of the leg body
The coil spring is inserted into the leg body.
A door stopper which elastically supports such a load .

[0009]

[0010] invention 請 Motomeko second aspect, the cylindrical inner peripheral surface of the slip member to claim 1, characterized in that ventilation groove extending in the axial direction of the cylindrical portion is formed It is a door stopper of description.

According to a third aspect of the present invention, the cylindrical portion of the anti-slip member has a thin portion extending in the circumferential direction at least in the entire circumferential direction or substantially half in the circumferential direction at at least the central portion in the axial direction. The stretched thick portion is a bellows structure wall which alternately appears in the axial direction of the cylindrical portion.
2. The door stopper according to claim 1 . By providing these inventions, the above problems are completely solved.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a door stopper according to the present invention will be described with reference to the drawings. FIG.
FIG. 2 is a perspective view showing a state where the door stopper according to the first embodiment is attached to the door. FIG. 2 is a partial cross-sectional view showing the vicinity of a mounting base of the door stopper shown in FIG.

[0013] Door stopper (1) according to the first embodiment
Has a mounting base (4) provided with a permanent magnet (3) on the side facing the door (2), a strut leg (5), and leg holding means (6). The shift prevention sheet (7) is provided on the door facing surface side of (3).
Hereinafter, these components will be sequentially described in detail.

The mounting base (4) is a door stopper (1)
For detachably attaching to the door (2). The mounting base (4) has, on one side thereof, a magnet holding portion (8) for holding the permanent magnet (3). Although the shape of the mounting base (4) is not particularly limited, for example, as shown in FIG. 1, the mounting base (4) can be formed in a substantially rectangular shape in a front view. In the example shown in FIG. 1, the mounting base (4) is provided with a bottom portion (2) supporting the bottom surface of the permanent magnet (3).
7) and a side surface (28) provided at each edge of the bottom surface (27) and supporting the side surface of the permanent magnet (3). The permanent magnet (3) is housed and held in the magnet housing and holding portion (8). In the housed state, the exposed surface of the permanent magnet (3) is in contact with the side surface (28) of the mounting base (4). Whether they are on the same plane (see FIG. 2) or
8) It is located slightly behind the tip surface. By positioning the exposed surface of the permanent magnet (3) slightly behind the end surface of the side surface (28) of the mounting base (4), strong magnetic force can be absorbed by the end surface of the side surface (28) where the lines of magnetic force are concentrated. Becomes

The permanent magnet (3) can be attracted to and separated from a door (2) made of iron, steel or the like. The permanent magnet (3) is fixed in the magnet accommodating and holding portion (8) of the mounting base (4) using an adhesive or the like, and is exposed on the opposite side of the holding, that is, is exposed. The surface faces the door (2). The shape of the permanent magnet (3) is not particularly limited, but may be, for example, a plate shape.

The slip preventing sheet (7) is made of a permanent magnet (3).
And mounting base (4) magnetized by permanent magnet (3)
When the front surface of the side portion (28) of the mounting base (4) is magnetically attracted to the door (2), the front surface of the side portion (28) of the mounting base (4) and the permanent magnet (3) are placed on the surface of the door (2). This is to prevent sliding and displacement on the same surface. As shown in the partially enlarged view of FIG. 3, the slip prevention sheet (7) is formed of a fine foamed resin sheet in which each foam hole (9) opened on the sheet surface has a sucker function. The size of the foaming hole (9) is not particularly limited as long as it is a size capable of sufficiently exerting the sucker function, but the opening diameter of the foaming hole (9) opened on the sheet surface is set to 20 to 200 μm. Preferably. Further, it is preferable that each foam hole (9) of the slip prevention sheet (7) is a closed cell. By using closed cells, a reliable sucker effect can be obtained.

The slip prevention sheet (7) made of the fine foamed resin sheet can reliably adhere to the surface having irregularities of various sizes from the micro level to the macro level by the excellent suction force of the micro sucker. And a very large resistance to the movement in the sliding direction with respect to the sucked plate surface. Moreover, since the slip prevention sheet (7) utilizes the suction cup action, it can be repeatedly attached to and detached from the surface of the door (2) many times. Also,
Even if the surface of the slip prevention sheet (7) becomes dirty with dust or dirt,
By wiping the dirt with a cloth such as a rag, the excellent suction effect can be maintained semi-permanently, and the above-described large resistance to the slide movement can be maintained semi-permanently.

The slip preventing sheet (7) may be composed of only a fine foamed resin sheet, or may have a structure in which the fine foamed resin sheet is laminated on the surface of the nonwoven fabric. By adopting a laminated structure with a nonwoven fabric, the strength of the displacement prevention sheet (7) can be increased and its breakage can be prevented. Further, the type of synthetic resin used as the material of the fine foamed resin sheet is not particularly limited, for example,
Acrylic resin can be used. Further, since the slip prevention sheet (7) is attached to the end face of the side surface (28) of the mounting base (4) and the surface of the permanent magnet (3), its thickness is reduced. ) Is set so as not to affect the magnetic attraction force of the side surface (28) of the side portion (28) and the permanent magnet (3).

The slip prevention sheet (7) is attached to the front end face of the side surface (28) of the mounting base (4) and the door facing surface of the permanent magnet (3) held on the mounting base (4). Therefore, when the mounting base (4) is mounted on the door (2), the permanent magnet (3) and the surface of the door (2) are located between the side surface (28) of the mounting base (4) and the surface of the door (2). The slip prevention sheets (7) are interposed between them. As described in the section of the problem to be solved by the invention, the magnet has a large resistance to an external force in a direction to separate the magnet from the steel plate or the iron plate. Has a small resistance to an external force in the direction in which it is slid. However, by using the slip prevention sheet (7) having a large resistance in the sliding direction together with the magnet, the side surface (2) of the magnetized mounting base (4) can be used.
8) It is possible to provide a sufficient resistance to an external force in a direction in which the tip surface and the permanent magnet (3) are slid on a steel plate or an iron plate. Therefore, the mounting base (4) and the permanent magnet (3) do not slide against the door (2) surface.

The stay leg (5) prevents the door (2) from moving in the closing direction by the frictional force with the floor (10) when the door (2) is kept open. Is what you do. The protruding leg (5) has a base end (11) attached to the mounting base (4) so as to be able to swing up and down, and by the swinging operation, a tip end (12) becomes a floor surface (10).
It is possible to switch between a state in which the floor is grounded and a state in which the floor is separated from the floor surface (10). The strut legs (5)
When the tip (12) is in contact with the floor (10), the door (2) is prevented from moving in the closing direction. The strut leg (5) includes a rod-shaped leg body (33),
A non-slip member (18) externally fitted to the tip (34) of the leg body (33). In the illustrated example, the tip (12) of the strut leg (5) is a non-slip member (18).

The structure of the leg body (33) is not particularly limited, but can be made of, for example, a rod-shaped hollow pipe material. In the illustrated example, an intermediate portion of the leg body (33) is curved, and a portion from the base end portion of the leg body (33) to the curved portion extends obliquely downward, and from the curved portion to the distal end portion ( The portion up to 34) can be extended in a substantially vertical direction. The base end (11) of the extension leg (5) is connected to a bearing hole (not shown) of a bearing member (13) having a U-shaped cross section provided on the mounting base (4) by a pivot shaft (15). It is mounted so as to be able to swing freely through. The bearing member (13) has a bottom portion (29) fixed on the mounting base (4) and two rising portions (3) rising from both edges of the bottom portion (29).
0), and the bearing hole is formed at the rising portion (30).
Is formed.

The distal end (34) of the leg body (33) has a tubular portion (16) and a tubular portion (1) as illustrated in FIG.
A flexible non-slip member (18) having a bottom portion (17) provided at one end of 6) is fitted around the outside. The non-slip member (18) is provided at the tip (12) of the strut (5).
Is prevented from slipping on the floor (10). In the cylindrical portion (16) of the anti-slip member (18), a compression coil spring (19) extending in the axial direction from the tip portion (34) of the leg body (33) (FIG. 4A) , FIG. 6). The compression coil spring (19) elastically supports the load that the leg body (33) receives from the door (2).

The tip (34) of the leg body (33) is shown in FIG.
As shown in FIG. 6A and FIG. 6, it has a hollow pipe shape, and the diameter is the same along the axial direction. The distal end (34) of the leg body (33) is inserted from the upper end to the middle part of the compression coil spring (19), and extends from the middle to the lower end of the leg body (33). It protrudes from the tip opening. The diameter of the compression coil spring (19) is the same along its axial direction.

The non-slip member (18) is made of a material such as synthetic rubber which has flexibility and can generate a large frictional force with the floor surface (10). As shown in FIG. 5, the anti-slip member (18) has a cylindrical portion (16) and a bottom portion (17), and has a bottom portion (1).
A spring fixing portion (20) to which the lower end portion of the compression coil spring (19) is fitted is formed to project from the upper surface of the central portion of (7).

Further, the cylindrical portion (1) of the non-slip member (18) is provided.
6) On the inner peripheral surface, one or a plurality of ventilation grooves (21) extending in the axial direction of the cylindrical portion (16) are formed at intervals. The leg body (33) receives a lateral force and a downward force from the door (2). The leg body (33) transmits the force to the non-slip member (18) via the compression coil spring (19). Compression coil spring (19) (FIG. 6)
(B) opposes the downward force received from the leg body (33) by the elastic force when contracted. The anti-slip member (18) is provided on the floor (10) (see FIG. 6B).
Against the lateral force received from the leg body (33). This prevents the door (2) from moving in the closing direction.

Further, since the ventilation groove (21) is formed in the non-slip member (18), the non-slip member (18) is formed.
When the leg body (33) is lowered inside, the air in the non-slip member (18) escapes to the outside through the ventilation groove (21). Therefore, even if a downward force is suddenly applied to the leg body (33), the compression coil spring (19) contracts quickly, and the impact can be sufficiently absorbed. Thereby, it is possible to prevent an excessive force from acting on the permanent magnet (3). When the tip (5) is flipped up and the tip (12) of the tip (5) is separated from the floor (10), the anti-slip member (1) is passed through the ventilation groove (21).
8) Since air flows into the compression coil spring (19)
And the non-slip member (18) can be quickly restored to the original shape. Therefore, when the door stopper (1) is used again by rotating the tension leg (5) downward, even if the reuse is immediately after the previous use, the compression coil spring (19) and the non-slip are used. The shape of the member (18) is completely restored to the original state. Thereby, even if the inclination direction and the inclination angle of the floor surface (10) are different from the last use,
The entire lower surface of the non-slip member (18) can be reliably brought into contact with the floor surface (10).

Leg holding means (6) (see FIGS. 1 and 2)
Is for maintaining a state in which the tip portion (12) of the strut leg (5) is separated from the floor surface (10). The leg holding means (6) is provided near the base end (11) of the strut leg (5). Although the structure of the leg holding means (6) is not particularly limited, for example, as shown in FIGS. 1 and 2, it can be constituted by an elastic member having a substantially U-shaped cross section. The leg holding means (6) in the illustrated example includes a mounting base (4).
A bottom part (31) fixed on the top, and this bottom part (31)
And two rising portions (32) rising from both edges of the rising portion (32), and the interval between the rising portions (32) is gradually narrowed from the base end side to the tip end side of the rising portion (32). Therefore, the projecting leg (5) can be held by the rising portion (32).

Next, a method of using the door stopper (1) according to the first embodiment will be described. First, the leg body (33) is attached to one side of the door (2) while confirming that the non-slip member (18) comes into contact with the floor surface (10) with the tip portion (34) of the leg body (33) standing substantially vertically. Attach the base (4). In the case of an inward opening door, the mounting base (4) is attached to the outdoor surface of the door (2). In the case of an outward opening door, the mounting base (4) is mounted on the indoor surface of the door (2). Attach. At this time, the surface having the sucker function of the slip prevention sheet (7) comes into contact with the surface of the door (2), and the side surface (2) of the mounting base (4) magnetized through the slip prevention sheet (7).
8) The tip surface and the permanent magnet (3) are magnetically attracted to the door (2) surface. Therefore, the mounting base (4) is
Movement in the direction away from the surface of the door (2) is reliably prevented by the magnetic force of the side surface (28) of the side surface (28) and the permanent magnet (3), and the surface of the door (2) is attracted by the attraction force of the slip prevention sheet (7). The movement in the direction along is reliably prevented.
When the door (2) is closed, the strut leg (5) is kept separated from the floor (10) by the leg holding means (6), that is, held up.

When stopping with the door (2) open, the holding of the strut (5) is released and the strut (5) is released.
Is rotated downward. A non-slip member (18) located at the tip (12) of the strut leg (5) abuts the floor surface (10). Although the compression coil spring (19) is initially in a natural length state as shown in FIG. 6 (a), the non-slip member (18) comes into contact with the floor surface (10) to apply a load from the leg body (33). When it is received, it shrinks as shown in FIG. Even if the pivoting leg (5) rotates rapidly downward and the anti-slip member (18) collides with the floor surface (10), the compression coil spring (19) reliably absorbs the impact. No excessive force acts on the mounting base (4). Also,
Even if a force for closing the door is suddenly applied to the leg body (33), the compression coil spring (19) can reliably absorb the impact.

Next, the second embodiment of the door stopper according to the present invention will be described.
An embodiment will be described. FIG. 7 is a cross-sectional view illustrating an example of the non-slip member (18) of the door stopper according to the second embodiment. FIG. 8 is a perspective view of the non-slip member (1) shown in FIG.
8) It is sectional drawing which shows the structure of the vicinity. FIG. 9 is a sectional view showing another example of the non-slip member (18) of the door stopper according to the second embodiment. FIG. 10 is a cross-sectional view showing the structure near the non-slip member (18) shown in FIG.

The difference between the door stopper according to the second embodiment and the first embodiment is that the non-slip member (18) is used.
The structure is as follows. The non-slip member (1) in the second embodiment
8) A thin wall portion of the cylindrical portion (16) extending at least approximately half in the circumferential direction at the center in the axial direction (see FIGS. 7 and 8) or the entire circumferential direction (see FIGS. 9 and 10). A bellows structure wall (24) in which (22) and a thick portion (23) extending in the circumferential direction alternately appear in the axial direction of the cylindrical portion (16).
It is a point that is. According to this structure, the anti-slip member (18) in a non-weighted state (FIG. 8A, FIG.
(A) comes into contact with the floor surface (10) and a load is applied to the non-slip member (18).
As shown in (b), the bellows structure wall (24) shrinks flexibly.
Therefore, even if the floor surface (10) is inclined, the leg body (3)
With the tip (34) of (3) standing in a substantially vertical direction, the entire lower surface of the bottom surface (17) of the anti-slip member (18) can be reliably brought into contact with the floor (10). Thereby, a sufficient frictional force can be generated between the floor (10) and the door (2), and the movement of the door (2) can be reliably prevented. When the bellows structure wall is formed in substantially the half in the circumferential direction of the cylindrical portion (16), the other half of the cylindrical portion (16) hardly shrinks, so that the tiltable angle of the lower surface of the non-slip member (18) is increased. It is possible to reliably cope with the case where the inclination of the floor (10) is large.

Next, a third embodiment of the door stopper according to the present invention will be described.
An embodiment will be described. FIG. 4B is a perspective view of the distal end portion (3) of the leg body (33) of the door stopper according to the third embodiment.
4) It is a partial cross-sectional view showing the structure in the vicinity. FIG. 11 shows a non-slip member (1) of the door stopper according to the third embodiment.
8) It is sectional drawing which shows the structure of the vicinity.

The difference between the door stopper according to the third embodiment and the above-described second embodiment is that the distal end portion (34) of the leg body (33), the compression coil spring (19), and the non-slip member (18) are provided. Structure. The distal end portion (34) of the leg body (33) in the third embodiment is a tapered hollow pipe portion whose diameter gradually increases toward the distal end side as shown in FIG. 4B. Also, a compression coil spring (19)
Is formed in a tapered shape whose diameter gradually increases from the upper end side to the lower end side. Also, a non-slip member (18)
As shown in FIG. 11, the inner peripheral surface of the cylindrical portion (16)
It is formed in a tapered shape whose diameter gradually increases from the upper end opening to the lower end.

According to this structure, the compression coil spring (1
In 9), since the diameter gradually increases toward the lower side, the lower side elastic force increases. Therefore, even if the spring is relatively short, the impact force received from the leg body (33) can be reliably absorbed. In addition, the leg body (33)
The tip (34) of the leg body (33) and the inner peripheral surface of the non-slip member (18) are both tapered so that the tip (34) of the leg body (33) is lowered in the non-slip member (18). The tip (34) and the non-slip member (18)
A gap (25) (see FIG. 11 (b)) is formed between the inner peripheral surfaces of the inner and outer peripheral surfaces. Therefore, the air in the non-slip member (18) is smoothly discharged through the gap (25), so that the compression coil spring (19) is rapidly contracted, and the impact force received from the leg body (33) is reduced. Absorption can be ensured. Further, when the anti-slip member (18) is separated from the floor surface (10) by flipping the strut leg (5) upward, air flows into the anti-slip member (18) through the gap (25). Therefore, the shapes of the non-slip member (18) and the compression coil spring (19) are quickly restored to the original state.

Next, the fourth embodiment of the door stopper according to the present invention will be described.
An embodiment will be described. FIG. 12 is a perspective view showing a state where the door stopper (1) according to the fourth embodiment is attached to the door (2).

Door stopper (1) according to the fourth embodiment
However, the difference from the first embodiment is that when the door (2) is made of a material that is not affected by the attraction of the magnet, for example, wood or synthetic resin, a device for attaching to the door (2) is elaborated. That is the point. The door stopper (1) according to the fourth embodiment is the same as the door stopper (1) according to the first embodiment, except that the permanent magnet (3) (see FIG. 2) is made of iron or the like via a slip prevention sheet (7). Magnetically attracted to the auxiliary mounting board (26) made of steel or the like,
6), an adhesive sheet (not shown) is provided on the side facing the door. According to this configuration, the mounting base (4) can be fixed to the surface of the door (2) by the adhesive sheet provided on the mounting auxiliary substrate (26). Further, since the slip prevention sheet (7) (see FIG. 2) is interposed between the permanent magnet (3) and the mounting auxiliary board (26), the permanent magnet (3) is positioned on the mounting auxiliary board (26). There is no gap.

Next, the effects of the present invention will be more specifically proved by introducing embodiments of the door stopper according to the present invention. Note that the configuration of the present invention is not limited to the following configuration at all.

[0038]

EXAMPLES <Tension test of mounting base of door stopper> (Example) The door stopper (1) according to the first embodiment was used. The mounting base (4) has a rectangular shape when viewed from the front, and the outer periphery of the end surface of the side surface (28) is 118 m long.
m, the width was 30 mm, and the width of the front end face was 1.8 mm. The exposed surface of the permanent magnet (3) was positioned slightly behind the side surface (28) of the mounting base (4). The shape of the slip prevention sheet (7) is rectangular, and its size is 118 mm in length and 30 mm in width, which are the same as the outer circumference of the tip surface of the side portion (28) of the mounting base (4), and the thickness is 0.4 mm.
Met. The slip prevention sheet (7) was a fine foamed resin sheet made of an acrylic resin.

(Comparative Example 1) A door stopper having the same configuration as that of the example was used except that a soft vinyl chloride resin sheet having no foamed pores was used instead of the shift prevention sheet (7).
The size and shape of the soft vinyl chloride resin sheet were the same as those of the shift preventing sheet (7) of the example. (Comparative Example 2) A door stopper having the same configuration as that of the example except that the deviation prevention sheet (7) was not provided was used.

(Test Method) Tensile force required to separate the mounting base (4) from the door surface by fixing the door stoppers of the embodiment and the comparative example on the surface of the steel door, respectively (hereinafter referred to as the tensile force in the direction perpendicular to the surface). ), And the tensile force required to slide the mounting base (4) along the door surface (hereinafter, referred to as the in-plane tensile force).
In addition, 48 hours after each tensile force was fixed, 48
The measurement was performed for each of the samples after a lapse of time. Table 1 shows the measurement results.

[Table 1]

(Consideration) As can be seen from Table 1, the tensile strength in the surface direction of the example is orders of magnitude larger than that of Comparative Example 1 and Comparative Example 2, and is about 3.4 times that of Comparative Example 1. It is about twice as large as Example 2. Further, the tensile force in the direction perpendicular to the surface of the example is significantly larger than that of the comparative example 1 and about 2.4 times as large as that of the comparative example 1, and is substantially the same as that of the comparative example 2. Accordingly, it can be seen that the slip prevention sheet (7) having the micro suction cup has a much superior in-plane movement inhibiting force as compared with the case where the soft vinyl chloride sheet is provided and the case where the sheet is not provided at all. Moreover, even if the displacement preventing sheet (7) is interposed between the mounting base (4) and the door (2), the magnetic attraction force is hardly impaired. In addition, it was found that by interposing the slip prevention sheet (7), even if the mounting base (4) was slid, the surface of the door (2) was not damaged at all. The in-plane tensile force of the example was 21.6 (kgf) after 24 hours, whereas it was 21.6 (kgf) after 48 hours.
2.3 (kgf). It is considered that this is because the micro suction cup of the slip prevention sheet (7) adheres to the door surface over time due to the force of the magnet, and the suction force further increases.

[0042]

According to the first aspect of the present invention, the surface having the sucker function of the slip preventing sheet abuts on the surface of the door, and the mounting base and the permanent magnet magnetized through the slip preventing sheet make contact with the door surface. Attracts magnetic force. Therefore, the mounting base is
Movement in the direction away from the door surface is reliably prevented by the magnetic force, and movement in the direction along the door surface is reliably prevented by the attraction force of the displacement prevention sheet. Also,
It can be fixed more firmly than when it is fixed with an adhesive tape, and the adhesive does not remain on the door surface after being removed as in the case of using an adhesive tape. Also, when detaching from the door, the strut can be easily removed by the principle of leverage by standing upright on the mounting base and moving it laterally.

When the anti-slip member comes into contact with the floor surface and the leg body receives a load from the door, the compression coil spring contracts and opposes the load. Even if the anti-slip member collides with the floor surface, the compression coil spring will surely absorb the impact, so that excessive force will not act on the mounting base. Absent. Further, even if a force for closing the door is suddenly applied to the leg body, the compression coil spring can reliably absorb the impact.

The invention according to claim 2, in the cylindrical inner peripheral surface of the slip member, according to claim 1, characterized in that ventilation groove extending in the axial direction of the cylindrical portion is formed The following effects can be obtained because the door stopper is used. That is, since the ventilation groove is formed in the non-slip member, when the leg body is lowered in the non-slip member, the air in the non-slip member escapes through the ventilation groove to the outside. Therefore, even if a downward force is suddenly applied to the leg body, the compression coil spring contracts quickly, and the impact can be sufficiently absorbed. Thereby, it is possible to prevent an excessive force from acting on the mounting base and the permanent magnet. In addition, when the strut leg is flipped upward and the tip of the strut leg is separated from the floor surface, air flows into the non-slip member through the ventilation groove, so that the compression coil spring and the non-slip member are restored to the original state. The shape can be quickly restored. Therefore, when using the door stopper again by rotating the tension leg downward, even if the reuse is immediately after the previous use, the shapes of the compression coil spring and the non-slip member are completely restored to the original state. Has been restored. Thereby, even if the inclination direction and the inclination angle of the floor surface are different from the last use, the entire lower surface of the non-slip member can be reliably brought into contact with the floor surface.

According to a third aspect of the present invention, the cylindrical portion of the anti-slip member has a thin portion extending in the circumferential direction at least in the axial direction at a central portion in the entire circumferential direction or substantially half in the circumferential direction. The stretched thick portion is a bellows structure wall which alternately appears in the axial direction of the cylindrical portion.
The door stopper according to 1 has the following effects. That is, since the bellows structure wall shrinks flexibly, even if the floor surface is inclined or the floor surface has relatively large irregularities, the entire lower surface of the non-slip member can be reliably brought into contact with the floor surface. . As a result, a sufficient frictional force can be generated with the floor surface, and the movement of the door can be reliably prevented. Further, when the bellows structure wall is formed in substantially the half in the circumferential direction of the non-slip member, the other half of the non-slip member hardly shrinks, so that the tiltable angle of the lower surface of the non-slip member can be increased, and the floor surface can be enlarged. Even if the inclination is large, it is possible to reliably cope with it.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state where a door stopper according to a first embodiment of the present invention is attached to a door.

FIG. 2 is a partial cross-sectional view illustrating a vicinity of a mounting base of the door stopper illustrated in FIG. 1;

FIG. 3 is an enlarged perspective view showing a displacement prevention sheet according to the present invention.

FIGS. 4A and 4B are partial cross-sectional views illustrating a structure near a tip end of a strut leg according to the present invention. FIG. 4A is a diagram illustrating the same structure according to the first embodiment, and FIG. It is a figure showing the same structure.

5A and 5B are diagrams showing a structure of a non-slip member according to the first embodiment of the present invention, wherein FIG. 5A is a side view, FIG. 5B is a plan view, and FIG.

6A and 6B are cross-sectional views illustrating a structure near a non-slip member according to the first embodiment of the present invention. FIG. 6A is a diagram illustrating a state when the non-slip member is separated from a floor surface, and FIG. )
FIG. 4 is a diagram showing a state when a non-slip member is in contact with a floor surface.

FIG. 7 is a view showing an example of a structure of a non-slip member according to a second embodiment of the present invention, wherein (a) is a side view thereof,
(B) is a plan view thereof, and (c) is a longitudinal sectional view thereof.

8A and 8B are cross-sectional views illustrating a structure near a non-slip member illustrated in FIG. 7, in which FIG. 8A illustrates a state in which the non-slip member is separated from a floor surface, and FIG. It is a figure showing the state at the time of a stop member contacting a floor.

9A and 9B are diagrams showing another example of the non-slip member according to the second embodiment of the present invention, wherein FIG. 9A is a side view, FIG. 9B is a plan view, and FIG. is there.

10A and 10B are cross-sectional views illustrating a structure near a non-slip member illustrated in FIG. 9, in which FIG. 10A illustrates a state in which the non-slip member is separated from a floor surface, and FIG. It is a figure showing the state at the time of a stop member contacting a floor.

11A and 11B are cross-sectional views illustrating a structure near a non-slip member according to a third embodiment of the present invention. FIG. 11A illustrates a state when the non-slip member is separated from a floor surface, and FIG. )
FIG. 4 is a diagram showing a state when a non-slip member is in contact with a floor surface.

FIG. 12 is a perspective view showing a state where a door stopper according to a fourth embodiment of the present invention is attached to a door.

FIG. 13 is a view showing a state in which a conventional door stopper is attached to a door.

[Description of Signs] 1 ... Door stopper 2 ... Door 3 ... Permanent magnet 4 ... Mounting base 5 ... Strut leg 6 ...・ Leg holding means 7 ・ ・ ・ ・ ・ ・ ・ Slip prevention sheet 9 ・ ・ ・ ・ ・ ・ ・ Foam hole 10 ・ ・ ・ ・ ・ ・ ・ Floor surface 11 Tip end of tension leg 18 Non-slip member 19 Compression coil spring 21 Vent groove 22 Thin part 23 Thick part 24 .... Bellows structure wall 33 ..... Leg body

Claims (4)

[Claims] 1. A mounting base provided with a permanent magnet capable of being attracted to and separated from a door on a side facing the door, and a base end portion is mounted on the mounting base so as to be vertically swingable, and the swinging operation thereof causes a distal end. A strut that can be switched between a state in which the part is in contact with the floor surface and a state in which the part is separated from the floor surface, and that prevents the door from moving in the closing direction when the floor surface is in contact with the floor; A leg holding means provided near the end to hold a state in which the tip of the strut leg is separated from the floor surface, and a slip prevention sheet is provided on the side of the permanent magnet facing the door, The door stopper, wherein each of the foam prevention holes formed on the sheet surface is formed of a fine foam resin sheet having a sucker function. 2. The leg according to claim 1, wherein the leg comprises a rod-shaped leg body, and a flexible non-slip member externally fitted to a tip of the leg body. And a bottom surface portion provided at one end of the shape portion, and a compression coil spring extending in the axial direction from a tip portion of the leg body is inserted into the cylindrical portion of the anti-slip member, The door stopper according to claim 1, wherein the compression coil spring elastically supports a load applied to the leg body. 3. An inner peripheral surface of the cylindrical portion of the anti-slip member,
3. The door stopper according to claim 2, wherein a ventilation groove extending in the axial direction of the cylindrical portion is formed. 4. The cylindrical portion of the non-slip member has a thin portion extending in the circumferential direction and a thick portion extending in the circumferential direction at least in the entire circumferential direction or substantially half in the circumferential direction at the central portion in the axial direction. The door stopper according to claim 2, wherein a bellows structure wall which alternately appears in the axial direction of the shape portion is provided.