JP4879004B2 - Sliding door closer - Google Patents

Description

  The present invention relates to a sliding door closer that is attached to a sliding door that is slidable with respect to a door frame or the like on a building side and automatically closes the sliding door after opening (hereinafter, self-closing).

  Conventionally, as this type of sliding door closer, for example, the one described in Patent Document 1 is known. That is, as shown in FIG. 8, a rotary damper 102 and a mainspring case 103 are provided side by side on a bracket 101, and a wire reel 104 is provided on a rotatable mainspring case 103. A wire 105 is wound around the wire reel 104 and a main gear 106 is provided. A gear 108 is also provided on the rotary damper 107 so that both gears mesh with each other. . Further, an adjustment shaft 109 that fixes the mainspring of the mainspring case 103 is rotatably provided on the bracket 101, and the adjustment shaft 109 is screwed 111 to the bracket 101 via the adjustment plate 110. is there. In FIG. 8, reference numeral 112 denotes an idle gear.

In addition to this, for example, as shown in FIG. 9, the sliding door closer includes a damper unit 201, a mainspring unit 202, stopper means 203 so as to be able to contact the mainspring unit 202, and each wire winding disorder. A device provided with a prevention means 204 and a wire 205 is known. In this sliding door closer, by properly selecting and setting the damping function of the damper unit 201, the sliding door 206 is excessively closed by the excessive closing inertia force of the sliding door 206 or when the sliding door 206 is closed by the excessive damping function. Troubles that require external force can be solved. In the figure, reference numeral 207 denotes a sliding door closer casing, 208 a base bracket, 209 a mainspring, 210 a sliding door frame, 211 a support shaft, and 212 an oil damper. Furthermore, the code | symbol A shows a door opening direction and B shows a door closing direction.
Japanese Patent Laid-Open No. 2000-130004 (FIG. 2) Utility Model Registration No. 3101743 (FIG. 3)

However, for example, the sliding door closer described in Patent Document 1 is configured to allow adjustment of the closing speed by selecting the number of teeth of each gear so that the gear ratio to be engaged is appropriate. However, the structure is complicated, for example, the gears are arranged in three stages, and there is no contrivance for reducing the thickness so that the gear can be embedded inside the sliding door.
In addition, the sliding door closer described in Patent Document 2 is also installed in a state in which the closer itself is erected in the vertical direction with respect to one surface of the sliding door, and because it protrudes greatly in the thickness direction of the sliding door, it cannot be thinned. .

  This invention is made | formed in view of the said situation, and it aims at providing the sliding door closer which can aim at the thinning which can be accommodated in a sliding door inside with a simple structure.

In order to achieve the above object, a sliding door closer according to the present invention includes a mainspring chamber that houses a wire having a tip attached to either the building side or the sliding door side, and a spiral spring that fixes the base end of the wire. The mainspring unit has a wire chamber formed outside the mainspring chamber, and is housed in a casing attached to either the building side or the sliding door side, and a middle portion of the wire is wound or locked and In order to apply a damper force against the closing operation of the sliding door to the sliding door via the wire, the damper unit housed in the housing integrally with the mainspring unit and the wire are separated from a predetermined passage route. A sliding door closer that automatically closes the opened sliding door.
The wire of the portion wound up when the sliding door is closed is configured to be stored in the wire chamber,
The mainspring unit is provided with speed control means having a lock pin for adjusting the closing speed of the sliding door and a locking member for locking the lock pin in the speed control chamber adjacent to the mainspring chamber, and has a width of the wire pulley. The mainspring chamber and the speed control means are accommodated in a thin shape,
In the wire chamber, a wire pulley for winding the wire is formed on a first boundary wall with the mainspring chamber,
The speed control means forms the lock pin by forming a thickness of a second boundary wall between the mainspring chamber and the speed control chamber so that a thickness closer to the outer periphery of the mainspring is thinner than a position near the mainspring shaft. Rotate to secure a space over the locking member,
The wire turbulence prevention means includes a gap formed by placing the damper unit and the mainspring unit in close proximity to each other and close to the inner wall surface of the housing, and a stopper installed in the vicinity of the wire passage route. And the wire is prevented from leaving a predetermined path .

  In the sliding door closer according to the present invention, a pulley shaft provided at a rotation center of a damper pulley that winds or locks an intermediate portion of the wire of the damper unit is a shaft hole that is opened on one surface of the housing. When the damper pulley generates an eccentric operation during the pulling operation of the wire, the end of the pulley is fitted into the shaft hole of the housing with a small interval. When it receives a force, it rotates while sliding and receives the force of the wire as a both-end support.

In the sliding door closer of the present invention, the casing in which the mainspring unit and the damper unit are integrally stored is housed in a lock space opened on the upper surface of the sliding door, and the upper surface of the sliding door is When the housing enters the lock space, the housing includes a locking means that is locked by being locked in a lock chamber provided in the lock space; and
An elastic member having resilience is fixed along a partial wall surface or the entire wall surface inside the lock space of the sliding door.

  Further, in the sliding door closer of the present invention, the lock space constitutes a buried space into which the casing is fitted in a state where one surface of the casing faces the outside from the upper surface of the sliding door, and the casing accommodated in the buried space Protective means that integrally includes a fixing plate for screwing a body onto the upper surface of the sliding door, and prevents the sliding door from colliding with the building facing the upper surface of the sliding door when the sliding door is inserted and removed. It is provided with.

Further, the sliding door closer of the present invention has a guide rail on the building side facing the upper surface of the sliding door, and is attached to the upper surface of the sliding door rotatably on the bracket and the bracket along the guide rail. A bracket for opening and closing while rolling, the bracket penetrating a wire hole in a central portion, the wire penetrating the wire hole and between the building side and the sliding door It is characterized by being built.

  According to the present invention, since the first boundary wall outside the mainspring chamber is configured as a pulley for winding the wire, the configuration can be simplified, and the second between the mainspring chamber and the speed control chamber can be achieved. Since the casing is made thin by partially reducing the thickness of the boundary wall, a sliding door closer that can be accommodated inside the sliding door can be provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
(First embodiment)
1 and 2 show a sliding door 1 having a sliding door closer (hereinafter abbreviated as “closer”) 2 according to a first embodiment of the present invention. The housing 3 constituting the casing of the closer 2 is fitted and fixed in the buried space 13, and the sliding surface is opened and closed on the floor 12 on the building (house) side on the lower surface 12 (in FIG. 1, A roller R that rolls along the opening direction is indicated by α and the closing direction is indicated by β. In addition, in order to prevent the sliding door 1 from toppling by guiding the moving operation when the sliding door 1 opens and closes along the upper frame W on the building (house) side, the upper frame W facing the upper part of the sliding door 1 A guide member G having a substantially U-shaped cross section (see FIG. 1B) is fixedly provided.

  The closer 2 is fitted into the embedded space 13 with only the upper surface 31 of the housing 3 facing the outside from the upper surface 11 of the sliding door 1, and is fixed to the sliding door 1 with screws 30B. The upper surface 11 is installed in a substantially flush state. As another embodiment, the upper surface 31 of the housing 3 may be embedded in the upper side of the sliding door 1 so that the upper surface 31 of the housing 3 and the upper surface 11 of the sliding door 1 are flush with each other. If it is flush, a large space between the upper surface 11 of the sliding door 1 and the upper frame W can be secured. Further, in the closer 2, as shown in FIG. 2, the tip end portion of the wire 4 drawn out from the opening 3 </ b> A opened in the upper surface 31 of the housing 3 has a door contact T of the upper frame W on the building (house) side. It is fixed with a fixing screw of a nearby guide member G.

  Further, the closer 2 includes the above-described wire 4, the mainspring unit 5, the damper unit 6, and the wire disturbance preventing means 7, which will be described later, inside the housing 3.

  Among these, the mainspring unit 5 includes a mainspring chamber 52 in which the mainspring 51 is accommodated, a wire chamber 53 in which the wire 4 is accommodated, and speed control means 8 that adjusts the closing speed of the sliding door 1, as shown in FIG. ing. The mainspring 51 is wound many times spirally around the mainspring shaft 55 and its outermost winding portion is fixed to the inner wall of the mainspring chamber 52. The other end of the wire 4 is fixed to the wire pulley portion. The wire chamber 53 is formed in a substantially annular shape outside the mainspring chamber 52, and a wall (first boundary wall) 57 with the mainspring chamber 52 constitutes a wire pulley. When the sliding door 1 is closed, a large number of wires are formed. The wire 4 is wound in an aligned manner. The mainspring shaft 55 is pivotally supported so as to be rotatable with respect to the mainspring unit 5 and the casing 3, but is integrated with a speed control shaft 81 of the speed control means 8 described later. By fixing 8 at a desired position, the mainspring shaft 55 is also fixed in a non-rotatable state.

The speed regulating means 8 adjusts the closing speed of the sliding door 1 by changing the number of turns of the mainspring 51 when the sliding door 1 is completely closed to the end, and faces the side of the mainspring chamber 52 (in parallel). It was possible to reduce the thickness by providing the speed control chamber 54 and installing the mainspring chamber 52 and the speed control chamber 54 in the width of the wire pulley.
In particular, in the present invention, the thickness of one wall (second boundary wall) 56 constituting the boundary between the mainspring chamber 52 and the speed control chamber 54 is set to be spiraler than the mainspring 51 near the mainspring shaft 55. It is formed so that the part near the outer periphery of the film becomes thinner .
Thus, a “bald space” for rotating the lock pin 82 for adjusting the closing speed described later is secured, and the lock pin 82 can get over a locking member 83 described later. Thus, since the closer 2 is made thin, the closer 2 of this embodiment can be embedded also in the normal sliding door 1.

  The speed control means 8 of the present embodiment includes a speed control shaft 81 that is integral with the rotating shaft 55 of the mainspring 51 and penetrates the second boundary wall 56 from the mainspring chamber 52 and protrudes into the speed control chamber 54. A lock pin 82 installed in the mainspring chamber 52 extending in a direction perpendicular to the axial direction of the shaft 81 (that is, the radial direction of the mainspring 51), and the lock pin 82 is rotated to adjust the spring force. In order to fix the winding state of the mainspring 51, there are provided locking members 83 which are installed at a plurality of locations inside the speed control chamber 54 and lock the lock pins 82 at desired positions. The lock pin 82 is formed as thin as possible in order to reduce the thickness of the housing 3 while ensuring a minimum strength. The locking pin 82 is provided with a locking groove 82A on the head thereof. For example, as shown in FIG. 2, positions corresponding to the locking pin 82 on the front of the mainspring unit 5, the housing 3 and the sliding door 1 are provided. In addition, if a through hole (only the through hole 3B of the housing 3 is shown in FIG. 2) is formed, a minus driver or a coin is locked from the outside of the sliding door 1 to the locking groove 82A, and the closing speed is increased. Can be adjusted.

  The damper unit 6 applies a damper force against the closing operation to the sliding door 1 through the wire 4 when the sliding door 1 is closed. In the present embodiment, the intermediate portion of the wire 4 is wound a plurality of times. A damper 61 having a thin disk-shaped internal space and accommodating a damper (not shown) therein; a damper 61 (in a coaxial state) arranged in parallel; and the wire 4 extends along the outer peripheral surface. And a damper pulley 62 to be wound. Although not shown, the damper 61 includes a damper oil filled in the damper chamber and a damper blade that receives the hydraulic resistance of the damper oil only in one direction. A damper shaft provided at the center of the damper blade extends integrally with a pulley shaft 63 of a damper pulley 62 described later, and penetrates the damper unit 6 to reach the housing 3. In other words, the damper shaft is rotatably supported by the housing 3 in a state of a cantilever support structure that receives a load in the shaft hole 32.

  The damper pulley 62 is installed in order to realize a slow door closing operation by transmitting the damper force generated from the damper side to the wire 4. In this embodiment, as described above, the front end and the base end The intermediate wire 4 is wound in an aligned state a plurality of times. Further, the pulley shaft 63 of the damper pulley 62 has an eccentric operation in the pulley chamber 64 (or the housing 3) due to the pulling operation of the wire 4 when the sliding door 1 is opened. In order to ensure the rotation of the damper pulley 62 without colliding with the inner wall of the pulley chamber 64 (or the housing 3), a predetermined slight gap between the shaft hole 32 of the housing 3 (although almost confirmed in FIG. 3) When the wire 4 receives a sudden force, the end face of the damper pulley 62 is supported by the shaft hole 32 of the housing 3, and rotates while sliding in a form of supporting both ends. The load can be distributed.

  The wire turbulence prevention means 7 prevents the wire 4 from derailing from a predetermined passage route, and derails even when the wire 4 becomes loose when the sliding door 1 returns in the closing direction. It is designed to prevent this. For this reason, the wire disturbance preventing means 7 is provided between the damper unit 6 and the casing 3, between the damper unit 6 and the mainspring unit 5, and between the mainspring unit 5 and the casing 3, respectively. In order to prevent derailment from a normal passage route, the damper unit 6 and the mainspring unit 5 are in close proximity to each other, and the damper unit 6 and the mainspring unit 5 are disposed in close proximity to the inner wall surface of the housing 3. Gaps 7A to 7E, and stoppers 71 to 73 installed in the vicinity of the normal passage route of the wire 4. In particular, the stoppers 71 and 72 are installed on both sides of the normal passage route of the wire 4 and in the vicinity of the route.

  In addition, the housing 3 of the present embodiment is integrally provided with a fixing plate 30 provided with a screw hole 30A for fixing the housing 3 embedded in the embedded space 13 to the upper surface of the sliding door 1 with screws 30B. ing. Further, when the sliding door 1 is removed or suspended, the casing 2 prevents the closer 2 from colliding with the upper frame W on the building (house) side facing the upper surface 11 of the sliding door 1. Protection means 33 is provided. The protection means 33 is formed of an elastic member such as rubber in a substantially truncated cone shape and protrudes higher than the damper pulley 62 of the damper unit 6 of the closer 2 protruding from the upper surface 11 of the sliding door 1.

Therefore, according to the present embodiment, as shown in FIG. 3A, the thickness of the wall 56 constituting the boundary between the mainspring chamber 52 and the speed control chamber 54 is set closer to the mainspring shaft 55 of the mainspring 51. Also, the spiral mainspring 51 is formed so as to be thinner near the outer periphery . In other words, the thickness of the speed control chamber 54 is minimized while the lock pin 82 can get over the locking member 83 described later. As a result, it is possible to secure a “bulge space” with a necessary minimum thickness so that the lock pin 82 necessary for adjusting the door closing speed can be rotated.
Thus, according to this embodiment, since the closer 2 is thinned, the closer 2 of the present embodiment can be accommodated in a normal sliding door 1 without increasing the thickness. Can be buried. In addition, since the lock pin 82 has a diameter as small as possible within the allowable range of the strength and is installed in the mainspring chamber 52, the casing 3 can be further reduced in thickness.

  Furthermore, according to the present embodiment, the closer 2 is embedded in the embedded space 13 of the sliding door 1 so that the closer 2 is hidden and cannot be seen from the outside. Moreover, a wire 4 is installed between the upper frame W and the closer 2 using a gap between the upper frame W on the building (house) side above the sliding door 1, and the upper frame W Since the guide member G fixed on the lower surface of the wire 4 can be hidden from view, the closer 2 can be provided.

  In the present embodiment, the relationship between the damper pulley 62 and the wire 4 is configured to be aligned and wound many times as shown in FIG. 3. However, for example, as shown in FIG. 4, the wire 4 is attached to the damper pulley 62. It is good also as a structure which forms in the damper pulley 62 V-groove 62A which latches only 1 turn.

(Second Embodiment)
Next, a second embodiment of the present invention will be described in detail with reference to FIG. In the present embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals to avoid redundant description.
In the present embodiment, unlike the first embodiment, the housing 3 is housed in the lock space 15 opened on the upper surface of the sliding door 1, and the lock chamber 15 </ b> A provided in the lock space 15 on the upper surface 11 of the sliding door 1. , 15B is provided with locking means 34 that is locked by being locked in the lock chambers 15A and 15B when the housing 3 enters.

  The lock chambers 15 </ b> A and 15 </ b> B are configured by groove spaces that are dug in one step from both vertical wall surfaces located on the left and right sides of the lock chamber 15 toward the opening / closing direction of the sliding door 1. On the other hand, the locking means 34 of the present embodiment is formed in a substantially U-shape with a thin metal steel plate or the like and has a spring property. When the housing 3 is inserted into the lock space 15 from the upper surface 11 of the sliding door 1, the lock chamber 34 is It easily enters 15A and 15B and is locked by elastic force so as not to come out.

  In addition, an elastic member 35 having resilience is fixed to the housing 3 along a partial wall surface (or all wall surfaces) inside the lock space 15 of the sliding door 1 for the purpose of eliminating rattling and the like. In the present embodiment, a sponge-like object is fixed to the bottom surface inside the lock space 15.

  Furthermore, unlike the case of 1st Embodiment which equips the upper surface of the sliding door 1 with the fixing plate 30 which provided the screw hole 30A for fixing with the screw | thread 30B in the housing | casing 3, instead of this, The casing 3 is provided with external holes 3C in a diagonal direction.

  Therefore, according to this embodiment, the closer 2 can be attached to the sliding door 1 with one touch.

(Third embodiment)
Next, a third embodiment of the present invention will be described in detail with reference to FIG. In the present embodiment, the same parts as those in the first and second embodiments are denoted by the same reference numerals to avoid redundant description.
In the present embodiment, unlike the first and second embodiments, a guide rail GR is installed along the upper frame W on the building (house) side facing the upper surface 11 of the sliding door 1, and the sliding door 1 includes The upper surface 11 has a bracket 9 and a door 91 that is rotatably attached to the bracket 9 and opens and closes while rolling along the guide rail GL.

  The bracket 9 is provided with a wire hole 92 having an opening at the center, and the wire 4 extends between the building (house) side and the sliding door 1 through the wire hole 92.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described in detail with reference to FIG. In the present embodiment, the same parts as those in the first to third embodiments are denoted by the same reference numerals to avoid redundant description.
In the present embodiment, unlike the first to third embodiments, the closer 2 is fixed in the vicinity (when closing) of the door T of the upper frame W on the building (house) side facing the upper surface 11 of the sliding door 1. In addition, a locking arm member 4 </ b> A for fixing the tip of the wire 4 is fixedly provided at an upper portion in the vicinity of the tip facing the door stop T of the sliding door 1.

  The present invention is not limited to the embodiment described above, and can be implemented in various forms without departing from the scope of the invention.

  The sliding door closer of the present invention has a simple structure and has an effect of being able to be thinned so that it can be embedded inside the sliding door, and is useful for being installed in a commercially available sliding door as it is and used as its self-closing device. is there.

(A) is a front view which shows the sliding door which attached the sliding door closer which concerns on the 1st Embodiment of this invention, (B) is a side view, (C) is a front view which shows the state which opened the sliding door. It is explanatory drawing which shows the installation state of the closer and wire of 1st Embodiment shown in FIG. (A) is a top view which shows the sliding door closer which concerns on the 1st Embodiment of this invention, (B) is a front view. It is a top view which shows the modification of the sliding door closer which concerns on the 1st Embodiment of this invention. It is explanatory drawing which shows the installation state of the closer and wire of the 2nd Embodiment of this invention. The front view which shows the sliding door closer which concerns on the 3rd Embodiment of this invention. It is a side view of the sliding door closer which concerns on the 3rd Embodiment of this invention. It is a perspective view which shows the sliding door which attached the sliding door closer which concerns on the 4th Embodiment of this invention. It is explanatory drawing which shows the structure of the conventional sliding door closer. (A) is a perspective view which shows the structure of the other conventional sliding door closer, (B) is the sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sliding door 11 Upper surface 12 Lower surface 13 Embedded space 15 Locking space 2 Sliding door closer 3 Housing 30 Fixing plate 31 Upper surface of housing 32 Shaft hole 33 Protection means 34 Locking means 4 Wire 5 Mainspring unit 51 Mainspring 52 Mainspring chamber 53 Wire chamber 54 Adjustment Speed chamber 55 Mainspring shaft 56 Second boundary wall 57 First boundary wall 6 Damper unit 61 Damper 62 Damper pulley 62A V groove 63 Pulley shaft 64 Pulley chamber 7 Wire disturbance prevention means 7A to 7E Clearance 71 to 73 Stopper 8 Speed control means 81 Control shaft 82 Lock pin 83 Locking member 9 Bracket 91 Suspended door pulley 92 Wire hole F (Building side) Floor G Guide member GR Guide rail R Roller T (Building side) Door contact W Upper part (Building side) Frame α Opening direction β Closing direction

Claims (5)

A wire having a tip attached to either the building side or the sliding door side, a mainspring chamber containing a spiral spring that fixes the base end of the wire, and a wire chamber formed outside the mainspring chamber; A mainspring unit housed in a housing attached to either the building side or the sliding door side, and a damper force that winds or locks an intermediate portion of the wire and resists a closing operation of the sliding door via the wire. The damper unit housed in the housing integrally with the mainspring unit and the wire turbulence prevention means for preventing the wire from detaching from a predetermined passage path to be attached to the sliding door A sliding door closer that automatically closes the sliding door,
The wire of the portion wound up when the sliding door is closed is configured to be stored in the wire chamber,
The mainspring unit is provided with speed control means having a lock pin for adjusting the closing speed of the sliding door and a locking member for locking the lock pin in the speed control chamber adjacent to the mainspring chamber, and has a width of the wire pulley. The mainspring chamber and the speed control means are accommodated in a thin shape,
In the wire chamber, a wire pulley for winding the wire is formed on a first boundary wall with the mainspring chamber,
The speed control means forms the lock pin by forming a thickness of a second boundary wall between the mainspring chamber and the speed control chamber so that a thickness closer to the outer periphery of the mainspring is thinner than a position near the mainspring shaft. Rotate to secure a space over the locking member,
The wire turbulence prevention means includes a gap formed by placing the damper unit and the mainspring unit in close proximity to each other and close to the inner wall surface of the housing, and a stopper installed in the vicinity of the wire passage route. And a sliding door closer characterized in that the wire is prevented from leaving a predetermined path . The damper unit is
A pulley shaft provided at a rotation center of a damper pulley that winds or locks an intermediate portion of the wire has a cantilever structure supported by a shaft hole opened on one surface of the housing, and
When the damper pulley generates an eccentric operation during the pulling operation of the wire, the pulley end is fitted into the shaft hole portion of the housing with a small interval, and when it receives force, it rotates while sliding. The sliding door closer according to claim 1, wherein a force of the wire is received as both end supports. The casing that integrally stores the mainspring unit and the damper unit is housed in a lock space that is open on an upper surface of the sliding door, and
When the housing enters the lock space on the upper surface of the sliding door, the housing includes locking means that is locked by being locked in a lock chamber provided in the lock space; and
The sliding door closer according to claim 1 or 2, wherein an elastic member having resilience is fixed along a partial wall surface or the entire wall surface inside the lock space of the sliding door. The lock space constitutes a buried space into which the housing is fitted in a state where one surface of the housing faces the outside from the upper surface of the sliding door,
A fixed plate for integrally screwing the casing housed in the embedded space to the upper surface of the sliding door,
4. The sliding door closer according to claim 3, further comprising protection means for preventing the sliding door from colliding with the building side facing the upper surface of the sliding door when the sliding door is inserted and removed. Having a guide rail on the building side facing the upper surface of the sliding door;
On the upper surface of the sliding door, there is a bracket and a door wheel that is rotatably attached to the bracket and opens and closes while rolling along the guide rail,
The bracket is provided through the wire hole in the center,
The sliding door closer according to any one of claims 1 to 4, wherein the wire passes through the wire hole and is installed between the building side and the sliding door.

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