JPS60199406A - Elastic support - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Technical Field 1) The present invention relates to an automobile seat cushion, a seat back,
Furthermore, it relates to an elastic support used for beds and the like.

[Prior Art 1-2- The above-mentioned elastic supports conventionally provided generally consist of a frame body and a support body installed on the frame body for supporting objects to be supported such as people and luggage. , and the legs that elastically support the ends of the support are FIE' (one component).

However, since the elastic strength of the above-mentioned elastic support is almost constant, some problems may occur.

For example, in a car seat, which is a typical example of an elastic support, the elastic tension cannot be changed depending on the weight of the occupant, the condition of the passageway, the length of the seat, etc. Depending on the vehicle, the ride comfort was not necessarily sufficient.In other words, if the seat was set to a soft seat, it would be good for light people, but there was a risk of bottoming out for light people. Also, use it as a blinking sheet.
In some cases, although it is good for heavy people, it lacks elasticity for light people.

[Object of the Invention] The present invention has been made in view of the above-mentioned state of the prior art, and it is an object of the present invention to provide an elastic support whose elastic strength can be adjusted as necessary.

[Summary of the Invention] The elastic support of the present invention includes a frame, a support on whose surface a force l#j/f acts, and at least a first leg supporting the support on the frame. a second leg, and at least one of the first leg and the second leg elastically supports the support; an arm member that is swingably held about a first engaging part with the frame as a fulcrum and whose second engaging part supports the support body; and an arm member coupled to the arm part H that supports the support body; a spring member that biases the arm member in a direction to support the arm member; a control member that is interposed between the spring member and the frame body and adjusts the biasing force by changing the relative position of the other end of the spring member; It is characterized by being composed of.

Typical elastic supports of the present invention include 11 plates and beds, beds, and the like. In the vehicle seat 1, it can be applied to the seat cushion where the lumbar region of the occupant is subjected to the load.
Furthermore, it can also be applied to sea boats and lumbar boats where the load is applied to the backs of the passengers.

[Structure of the Invention] In the elastic support J3 of the present invention, the same frame and support as those of the conventional elastic support can be used.

That is, it is sufficient that the frame has the function of connecting and holding the above-mentioned supports and legs. Therefore, when the present invention is applied to a vehicle seat, the frame normally serves as a base for holding the seat.

For automobile seats, the frame may be a seat frame that slides between the floor and the door of the automobile. This frame is usually constructed of a pipe structure or a sheet metal structure.

It is sufficient for the support body to have the function of supporting objects to be supported, such as people or luggage, and to have a certain surface for supporting the objects to be supported. Therefore, the support may be a planar member having elasticity or, depending on the case, a plate-like member having a certain degree of rigidity. In automobile seats, the support body is usually made by forming a skeleton of a wire-like spring such as an S spring bent into an S-shape, and then assembling a cushioning material such as urethane rubber on top of this skeleton. It will be done. Also, the support body is found in ordinary chairs -
5- The frame forming the outer periphery may be covered with a cloth or a net.

The leg portion (at least one of the first leg portion and the second leg portion) that characterizes the present invention includes a swingable arm member, a spring member that biases the arm member, and a spring member that biases the arm member. It is composed of L t111111811 material whose end position is changed.

Here, the arm member is swingable about the first engagement point between the frame and the arm member as a fulcrum. The arm member may be bent in a crank shape. The arm member includes a first arm having at least two first engaging parts having substantially the same axis and at least one second engaging part having a different axis; a second engaging part having a third engaging part that engages with the spring member at a position that is pivoted at a certain angle with the second engaging part with the part as a pivot center;
The first arm and the second arm may be made by bending a single spring steel strip.

The above-described spring member is generally a tension coil spring to pull the arm member, but as a special example, a compression coil spring may be used to press the arm member. In short, it is sufficient for the spring member to have the function of biasing the arm member in the direction in which the arm member supports the support body.

The above-mentioned control member may be any member that moves the other end of the spring member to change its position.

By changing the position of the other end of the spring member in this way, the direction in which the spring member points changes, so even if the spring force of the spring member remains constant, the biasing force applied to the arm member can be adjusted. can. This control member is held in a frame body so as to be swingable or movable, and may be configured to change the relative position of the portion that engages with the other end of the spring member by moving relative to the frame body. can.

-IJ III It is desirable that the other end of the spring member be configured to be able to quickly change the other end to any desired position, and to be able to maintain the other end at any desired position.

For example, the control member may be a member in which one end of an elongated rod or plate is rotatably supported and the other end is swingable. In this case, a lock *ei that holds the above-mentioned rod or plate in any swinging position is used.
It is a good idea to set up A conventional locking mechanism can be used. For example, the structure can be used to [Ratchets]. Further, the control member may be constituted by a link mechanism.

In the present invention, both the first leg portion and the second leg portion are
The arm member, the spring member, and the control member described above may be used, or the arm member may be made up of the arm member, the spring member, and the control member. When only one is configured, the other may be a rigid body or an elastic body having a constant biasing force.

[Effects of the Invention] As explained above, in the elastic support of the present invention, the biasing force can be adjusted by changing the position of the other end of the spring member using the control member. Since the urging force can be adjusted by adjusting the biasing force, the elastic layer of the elastic support can be adjusted.

[Embodiments of the Invention] FIG. 1 schematically shows an embodiment of a leg according to the present invention. The legs that characterize the present embodiment shown in FIG. It is composed of a spring member 90 in the form of a tension coil spring coupled to a spring member 90, and a control unit @100 that is swingable about a fulcrum 100a. In FIG. 1, a predetermined pressing force acts downwardly on the arm portion 4480 to support the support body. Therefore, the urging direction Q of the spring member 90 and the direction R of the arm member 80 are as follows.
It is bent at a predetermined angle at the engagement point between the spring member 90 and the arm member 80. Here, when the control member 100 is swung about the fulcrum 100a, the position of the other end 908 of the spring member 90 moves and changes in the vertical direction in accordance with the oscillation.

Now, assuming that the tensile force of the spring member 90 is a constant value F, the control member 100 is set at the position A shown by the solid line, and the spring part 1
, 190, the generated moment is FXa, which is the product of F and a. On the other hand, when the control member 100 is swung to position B and the urging direction of the spring portion 090 is P = 9 -, the generated moment is FX which is the product of F and b.
It is b.

Here, since the relationship a>b exists as is clear from FIG. 1, the relationship FXa>FXb holds true. Therefore, the spring member 9
Even if the tensile force of 0 remains constant, the generated moment can be adjusted, and as a result, the biasing horn applied to the arm member 80 can be adjusted.

[Configuration of Example] FIGS. 2 to 4 show an example in which the present invention is applied to a seat cushion for an automobile. FIG. 2 is a perspective view showing the main parts of this example, excluding a portion of the seat cushion pad and cover. FIG. 3 is a side view showing an enlarged main part of FIG. 2. FIG.

The frame body of this example is composed of a cushion frame 1 made of steel plates and having a rectangular frame shape. A beam tape 2 is formed on the rear side of the cushion frame 1, and a frame 3 is horizontally suspended at a position closer to the front of the cushion frame 1 in parallel with the rear side and the front side.

-10- The support of this example consists of four S
It is composed of a spring 4 and a substantially rectangular holding frame 5 that holds the S spring 4 in its entirety. A pressing force is applied to the S spring 4 by the weight of the occupant, the pad, and the like. Furthermore, S spring 4
For this, equal pitch b was used.

Here, as shown in FIG. 2, the tip of the holding frame 5 is fitted into a hole 3a formed on the upper surface of the frame 3 and held therein. The other end 4a of the S spring 4 is connected to the M5a of the holding frame 5.
It is instilled in and maintained.

The first leg portion in this example is constructed by suitably bending a long steel wire 6.

In order to connect the one end 4b of the S spring 4 as a support to the cushion frame 1 as a frame, in this example, the steel wire 6 is inserted through the hole 3b of the frame 3.
This is done by connecting the frame 3 to the cushion frame 1, and by inserting one end 4b of the S spring 4 through the stub 6a of the steel wire 6.

-11 The second leg portion that characterizes this example is composed of an arm member 8 bent into a crank shape, a spring member 9, and a restraining member 10. As shown in FIG. 2, the arm member 8 of this example is composed of a second arm 8a located at both ends and a first arm 8b.

The first arm 8b is held by the cushion frame 1 by being fitted into a hole in the retainer 2 as a first engaging portion.

Therefore, the arm member 8 can swing in the direction of arrow E using the first engaging portion as a fulcrum, that is, using the hole of the retainer 2 as a fulcrum.

As shown in FIG. 2, the first arm 8b is blown into the cylinder 5bk of the holding frame 5 as a second engaging portion, and as a result, the arm member 8 supports the S spring 4 as a support. are doing.

Therefore, when the arm member 8 rotates in the direction of arrow T and swings about the hole in the retainer 2 as a fulcrum, the other end 4a of the S spring 4 also swings accordingly. Therefore, the sinking on the other end 4a side of the S spring 4 can be adjusted by swinging the arm member 8.

Spring part number 449 of this example, coiled tension su-1
As shown in FIG. 2, one end 9b and the other end 9G are hook-shaped. The spring member 9 is engaged with the arm member 8 by pulling 11) 1 the hook-shaped one end 9b onto the hook-shaped third engaging portion of the second arm 8a.

The control 18B material 10 of this example includes a rod 11 installed on the cushion frame 1, a plate body 12 integrally attached to the rod 11, and an operation lever 13 installed at the tip of the rod 11. The configuration includes One end 11a of the 0-piece 11
is a round hole 14 formed in the side part of the cushion frame 1.
is supported by

Further, the other end portion 11b of the rod 11 is inserted through the other side portion of the cushion frame 1. That is, as shown in FIG. 3, it is inserted into a horizontally elongated hole 15 formed on the other side so as to extend horizontally by a length L.

Therefore, the other end 11b side of the rod 11 can swing by the length (L) of the horizontally elongated hole 15 using the round hole 14 as a fulcrum.

-13- A cam hole 16 is formed in the plate body 12 as shown in FIG. This cam hole 16 has three levels of upper and lower holes 16a.
, 16b, 16cf. In addition, in Figure 3, 171
．． Cushion frame 1 to engage with T cam hole 16
18 is a seat cushion pad, and 19 is a seat cushion cover.

Next, a case will be described in which the control section 4410 changes the position of the other end 9C of the spring section 449. First, in FIG. 3, when the operating lever 13 is moved forward (in the direction of arrow F/-i shown in FIG. 3) by operating the operating lever 13 with a finger or the like, the rod 11 is attached to the spring member 9. It slides forward along the horizontally long hole 15 against the resistance. This slide opens the hole 16a of the cam hole 16.

With the cam holes 16a, 16b, 16c and the bottle 17 disengaged, the operating lever 13 is rotated in the direction of arrow 1''. In other words, the end 12a of the plate 12 is the third
It rotates around the rod 11 in the direction of arrow G shown in the figure. When the -14- end 12a of the plate body 12 rotates in the direction of the arrow G in this manner, the position of the other end 9G of the spring member 9 moves up and down V accordingly.

As described above, when the position of the other end 9G of the spring member 9 changes by vertical movement, the fJM direction of the spring portion 449 changes as explained in the embodiment shown in FIG. The biasing force applied to the arm member 8 can be adjusted while keeping the spring force of the arm 9 at a constant level.

Incidentally, once the other end 9G of the spring portion 449 has been positioned at the desired 4f1 position, the rotational operation of the operating lever 13 may be stopped. In other words, since the plate body 12 of the control member 10 is automatically pulled toward the spring member 9 by the spring horns of the spring portion 4A9, the holes 16a and 16b of the cam hole 16
, 16c have predetermined holes on the backs thereof that engage the bottle 17. Therefore, the other end 9C of the spring member 9 can be fixed at the desired position described above.

In FIG. 4, the bottle 17 is inserted into the cam holes 16a and 16b.

16G is a graph showing the relationship between the A weight of the pressing force applied to the S spring 4 as a support and the amount of deflection of the S spring 4.

-15- When the bottle 17 is engaged with the cam hole 16a, the above moment amount is the largest. Therefore, the load W on the S spring 4
When the S spring 4 acts, the amount of deflection of the S spring 4 is l+. Further, when the bottle 17 and the cam hole 16b are engaged, the amount of deflection of the S spring 4 is Lx (L+<Lz);
When the cam hole 16C engages with the S spring 4, the deflection I
was 13 (L+<Lx<l-5). In the embodiment described above, the control member 10 is disposed only on one side of the cushion frame 1, but it may also be disposed on the other side. In this case, it is sufficient to arrange the round hole 14 in only one of the control members 10 of the horizontally long hole 1.

[Effects of the Embodiment] In this embodiment, the biasing horn applied to the arm member 8 can be adjusted without changing the spring force of the spring member 9 as described above. As a result, the amount of depression of the S spring 4 can be adjusted. Therefore, it is possible to adjust the amount of depression of the seat cushion and the seating height of the occupant depending on the passage conditions, the length of the ride, and the weight of the occupant. Therefore, one sheet can satisfy many Yuri.

Furthermore, even if the S spring 4, etc. undergoes changes over time such as fatigue due to long-term use over several years, in this example, if the operating lever 13 is U-rotated, the arm member 8 will be fixed. Since the applied urging force can be adjusted, its change over time can be corrected.

In addition, in this example, the movement of the arm member 8 in the length direction (that is, the movement in the direction of arrow J in FIG. 2) is regulated by the required amount, so that the horizontal swing of the S spring 4 can also be suppressed. This arm member 8 itself functions as a stabilizer that prevents the seat from rolling.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention, and is a side view schematically showing the main parts. 2 to 4 show specific embodiments in which the present invention is applied to a vehicle seat cushion. FIG. 2 is a perspective view showing the inside of one of the cushion frames 17, and FIG. FIG. 4 is an enlarged side view showing the main part of the cushion, and FIG. 4 is a graph showing the relationship between the load and the deflection of the cushion of this example. In the figure, 1 is a cushion frame (frame body), 41 is an S spring (support body), 6F is a steel wire (first leg part), 8 and 80 are arm members (second leg part), 88 is a second Arm, 8b is the first arm, 9 and 90 are spring parts 1a (second leg parts), 10
1001 is a control section 44 (second leg), 11i is a rod, 12 is a fuselage body, and 13 is an operating lever. Patent applicant: Aisin Seiki Co., Ltd. Agent: Patent attorney: Hirodo Okawa Patent attorney: Shudo Reiyo Patent attorney: Akio Maruyama-18-

Claims (1)

[Scope of Claims] (1) Consisting of a frame, a support on whose surface a pressing force is applied, and at least a first leg and a second leg that support the support on the frame. the first leg and the 21st
In the elastic support body in which at least one of the first parts elastically supports the support body, the one leg part is held swingably about the first engaging part with the frame body and the second leg part is held swingably about the first engagement part with the frame body. an arm member whose engaging portion supports the support; a spring member coupled to the arm member and biasing the arm member in a direction in which the arm member supports the support; the spring member and the frame; and a control member interposed between the spring member and the control member that changes the relative position of the other end of the spring member and adjusts the biasing force. (2. The elastic support described in claim 1 is a vehicle seat or bed. -1- (3) The arm member has at least two first a first arm that includes an engaging portion and at least one second engaging portion having another axis; and a first arm that swings at a certain angle with the second engaging portion with the first engaging portion as a swing center; and a second arm having a third engaging portion that engages with the spring member at the position where the first arm and the second arm are connected to one spring Il.
Claim 1, which is made by bending a strip of l.
Elastic support as described in section. (4) A patent in which the control member is held in a frame body so as to be swingable or openable, and the relative position of the portion that engages with the other end of the spring member is changed by relative movement with the frame body. An elastic support according to claim 1.