JP2023163445A - Slide rail with shock absorber - Google Patents

Abstract

To provide a slide rail with shock absorber which operates even when the slide rail is extended or shrunk.SOLUTION: In a slide rail constituted by a first outer member on a fixation side, a second outer member, a first inner member and a second inner member and a bracket integrally connecting the inner members on a movement side, a shock absorber which generates a buffer effect on the extension side is installed in the inner member; a shock absorber which generates a buffer effect on the shrinkage side is installed on the fixation side; an operation piece for compressing the shock absorber is provided on the movement side; and the shock in the time of shrinkage is relieved in the time of extension of the slide rail since the shock absorber is compressed by the operation piece following the extension and shrinkage of the slide rail.SELECTED DRAWING: Figure 1

Description

The present invention relates to a slide rail with a shock absorbing device used for drawers, display shelves, copying machines, and the like.

Conventionally, a number of slide rails equipped with shock absorbers have been provided.
Among such shock absorbers, some have a buffering effect when the slide rail is extended, while others have a buffer effect when the slide rail is contracted.
Usually, a shock absorber such as an air damper or an oil damper is used to reduce the speed at which the slide rail slides.
However, the buffering (braking) function of a slide rail equipped with a buffer device generally works only when the slide rail is extended or contracted (for example, Patent Document 1).
Therefore, a slide rail equipped with a shock absorber that operates whether the slide rail is extended or contracted has been desired.

Patent No. 4804946

SUMMARY OF THE INVENTION An object of the present invention is to provide a slide rail with a shock absorbing device that has a simple configuration and operates even when the slide rail is extended or contracted.

Therefore, in order to solve the above problems, the present invention is configured as a first means, which includes a first outer member, a second outer member, and a first outer member that is slidably held by a ball on the first outer member. an inner member, a second inner member that is slidably held by a ball on the second outer member, a first ball retainer that rotatably holds the ball on the first outer member side, and a second ball retainer that rotatably holds the ball on the first outer member side; a second ball retainer that rotatably holds the balls; the first inner member and the second inner member are integrally formed via a bracket; In the slide rail in which the second outer member is slidable and the second outer member is slidable with respect to the inner member, there is provided a shock absorber that generates a cushioning effect when the slide rail is extended, and a shock absorber that generates a buffer effect when the slide rail contracts. A shock absorbing device that generates an effect is provided, and the shock absorbing device is configured to reduce the impact both when the slide rail is extended and when it is contracted.

Therefore, in order to solve the above problems, the present invention is configured as a second means, in which the shock absorber generates a shock effect by being compressed in the sliding direction of the slide rail. This is performed by an actuating piece that moves as the slide rail slides, and the bracket is equipped with a shock absorber that generates a buffer effect when it is extended, and a shock absorber that generates a buffer effect when it contracts is attached to the first outer member. The actuating pieces for compressing the respective shock absorbers are provided on the second outer member side.

Therefore, in order to solve the above problems, the present invention has been configured as a third means, in which the shock absorber generates a shock effect by being compressed in the sliding direction of the slide rail, and This is achieved by the shock absorber coming into contact with the actuating piece as the slide rail slides, and the shock absorber generates a shock absorbing effect when it is extended and the shock absorber generates a shock absorbing effect when it contracts. The bracket is provided with an actuation piece on the second outer member side that compresses the shock absorber when it is extended, and an actuation piece that compresses the shock absorber when it contracts is provided on the first outer member side.

According to the first means of the present invention, the operating pieces for compressing the shock absorber are provided on the contraction side and the extension side, respectively, so that the damping force of the shock absorber is exerted when the slide rail is extended or contracted. You can apply the brakes to reduce the impact.
Furthermore, since the shock absorbing action for generating the damping force of the shock absorber is shared between the times of extension and the time of contraction, the durability of the shock absorber can be improved.

According to the second means of the present invention, in addition to the effects of the first means, the bracket is provided with a shock absorbing device that generates a shock absorbing effect when it is extended, and the shock absorbing device that generates a shock absorbing effect when it contracts is attached to the first outer. Since the actuating pieces that are provided on the member side and compress the respective shock absorbers are provided on the second outer member side that moves from the most contracted side of the slide rail to the most extended side, the second outer member on the moving side is the most contracted side. With a simple configuration, the damping force of the shock absorber can be used to apply the brakes and reduce the impact when the slide rail is at its maximum contraction and at its maximum extension. .

According to the third means of the present invention, in addition to the effects of the first means, a shock absorbing device that generates a buffering effect when it is extended and a shock absorbing device that generates a buffering effect when it contracts are provided on the second outer member side. Since the bracket is provided with an actuating piece that compresses the shock absorber when it is extended, and the shock absorber that generates a buffer effect when it is contracted is provided on the first outer member side, even when the second outer member on the movable side is fully retracted, Since the damping effect works even when the slide rail is at its maximum extension, with a simple configuration, the damping force of the shock absorber can be used to apply the brakes and alleviate the impact whether the slide rail is at its maximum contraction or its maximum extension.

Perspective view of the slide rail in its pulled out state Perspective view of the slide rail in its retracted state Exploded perspective view of slide rail Front view of slide rail Side view of the slide rail in its most contracted state Side view of the inner member of the slide rail in its fully extended state Side view of the state in which the shock absorber starts operating by the extension actuation piece when the slide rail is extended. Side view of the slide rail in its fully extended state Side view of the state in which the shock absorber begins to operate by the retraction actuation piece when the slide rail retracts. Side view of the slide rail in the most contracted state of the second embodiment Side view of the inner member of the slide rail of the second embodiment in its fully extended state A side view of the second embodiment in which the shock absorber starts to operate by the extension operating piece when the slide rail is extended. Side view of the slide rail of the second embodiment in its most extended state A side view of the second embodiment in which the shock absorber starts to operate by the contraction actuation piece when the slide rail contracts.

Hereinafter, a first embodiment of the present invention will be described based on the accompanying drawings. For convenience, the left-right direction in FIG. 7, that is, the sliding direction of the slide rail, is the extension direction, pull-out direction, front-back direction, the vertical direction in FIG. 4 is the height direction, and the left-right direction in FIG. 4 is the horizontal direction. do. The following description assumes that the direction in which the slide rail extends is the front direction, and the direction in which the slide rail contracts is the rear direction. In FIG. 1, reference numeral 100 indicates a slide rail of the present invention, and the slide rail 100 includes an upper first outer member 1A, a lower first outer member 1B disposed below the upper first outer member 1A, and an upper first outer member 1B. The first outer member 1 is composed of a first outer member base material 10 that is a bracket that integrally connects the first outer member 1A and the lower first outer member 1B. Next, an upper second outer member 2A arranged horizontally apart from the upper first outer member 1A, and a lower second outer member 2B arranged horizontally apart from the lower first outer member 1B. The second outer member 2 is composed of a second outer member base material 2C, which is a bracket that integrally connects the upper second outer member 2A and the lower second outer member 2B.

An upper first inner member 3A that can be fitted into the upper first outer member 1A, a lower first inner member 3B that can be fitted into the lower first outer member 1B, and an upper second outer member. 2A, an upper second inner member 4B that can be inserted into the lower second outer member 2B, an upper first inner member 3A, and a lower first The inner member 34 includes an inner bracket 7 that integrally connects the inner member 3B, the upper second inner member 4A, and the upper second inner member 4B.

An upper first ball retainer 5A is provided between the upper first outer member 1A and the upper first inner member 3A, and a lower first ball retainer 5B is provided between the lower first outer member 1B and the lower first inner member 3B. An upper second ball retainer 6A is provided between the upper second outer member 2A and the upper second inner member 4A, and a lower second ball retainer 6B is provided between the lower second outer member 2B and the lower second inner member 4B. It will be done. Further, a plurality of balls 500 are rotatably held in each of the upper first ball retainer 5A, the lower first ball retainer 5B, the upper second ball retainer 6A, and the lower second ball retainer 6B.

Since the above-mentioned first upper to second lower outer members 1A, 1B, 2A, and 2B are formed in the same shape, only the first upper outer member 1A will be described in detail.
The upper first outer member 1A has upper and lower bent edges 11A, 11A, which have ball guide grooves in the longitudinal direction of the inner surface, which are formed by bending both shorter ends of a metal elongated strip into an inward arc shape, and upper and lower bent edges 11A. , 11A are formed into a substantially channel shape.
Then, the extension (pull-out) side end and the contraction (pull-in) side end of the board 12A of the upper first outer member 1A are respectively bent in the inner rail 2 direction, and the drawer-side end of the upper first ball retainer 5A abuts. A stopper 13A for extension side movement and a stopper 14A for contraction side movement are formed.
The upper first outer members 1A, 2A, and 2B are formed to have the same shape, but the upper second outer members 2A and 2B are installed symmetrically with respect to the outer member 1A in the sliding direction, so that when moving on the extension side, Each of the stoppers 23A, 24A, 23B, and 23B corresponding to the stopper 13A and the extension side movement stopper 14A has an extension side movement stopper 23A, 23B formed on the contraction end side, and a contraction side movement stopper 24A on the extension end side. 24B is formed.

As shown in FIG. 4, the first outer member base material 10 has an upper first outer member 1A and a lower first outer member 1B arranged in parallel in the vertical direction, and is integrally formed with the first outer member base material 10. It is connected to.
The first outer member base material 10 is made of a steel plate, and is set to have a length slightly shorter than the length of the substrates 12A and 12B of the upper first outer member 1A and the lower first outer member 1B, and has a height direction. , a rectangular plate-shaped connection base 101 whose height is larger than the height of the upper first outer member 1A and the lower first outer member 1B arranged vertically in the height direction, and a slide rail at the lower end of the connection base 101. A contraction side shock absorber holding portion 102 is formed to protrude downward at a position slightly on the contraction side from the extension side end.

The second outer member base material 2C is formed of a steel plate, and is set to have a length slightly shorter than the long length of the substrates 22A and 22B of the upper second outer member 2A and the lower second outer member 2B, and the height direction is A rectangular plate-shaped connection base 21C whose height is larger than the height of the second outer member 2A and the lower second outer member 2B stacked in the height direction, and the contracted side end of the slide rail at the upper end of the connection base 21C. 22C, which is formed by bending in the direction of the upper and lower bent edges 21A, and the extension side end of the slide rail at the lower end of the connection base 21C, which is bent in the direction of the upper and lower bent edges 21A (21B). A contracted actuating piece 23C is formed.

The substrate 22A of the upper second outer member 2A is superimposed on the connection base 21C of the second outer member base material 2C formed in this way and is separably fixed with a screw, and the lower part of the upper second outer member 2A is fixed. The lower second outer member 2B is arranged parallel to the upper second outer member 2A so that the length thereof is the same, and similarly the connection base 21C and the substrate 22B are overlapped and separably fixed with screws.
In this state, the contraction-side actuating piece 22C is located above the upper bent edge 21A near the contraction-side end of the upper second outer member 2A, and the extension-side actuating piece 23C is located above the upper bent edge 21A of the lower second outer member 2B. It is arranged at a position below the lower bent edge 21B near the extension side end.

Next, the inner members will be explained in detail. Since the upper first to lower second inner members 3A, 3B, 4A, and 4B are formed in the same shape, only the upper first inner member 3A will be described in detail.
The upper first inner member 3A is formed to have a slightly shorter length in the longitudinal direction than the upper first outer member 1A. A ball sliding groove with balls 500 in the longitudinal direction of the outer surface is formed by bending both short ends of a thin metal plate into an outward arc shape and is large enough to be slidable on the outer member 1A. It is formed into a substantially U-shaped cross section by the upper and lower bent edges 31A, 31A and the substrate 32A.
An extension stopper 33A is provided in the vicinity of the contraction side end, which is cut and raised from the substrate 32A toward the U-shaped substrate 51A of the upper first ball retainer 5A, which will be described later.
The inner members 3A, 4A, and 4B are formed to have the same shape, but since the inner members 4A and 4B are installed symmetrically with respect to the inner member 3A in the sliding direction, the stoppers 43A and 43B correspond to the extension stopper 33A. is formed near the extended end.

As shown in FIG. 4, the inner bracket 7 has an upper first inner member 3A and a lower first inner member 3B arranged in parallel in the vertical direction, and an upper second inner member 4A and a lower second inner member 4B. The inner members are arranged in parallel in the vertical direction, and each inner member is integrally connected by the bracket 2.
The inner bracket 7 is made of a steel plate, and has a length that is approximately the same as the long length of the upper first inner member 3A, and in the height direction, the upper first inner member 3A and the lower first inner member 3B are raised. A rectangular plate-shaped base part 71 whose height is slightly larger than the vertically arranged height in the horizontal direction, and a rectangular plate-shaped base part 71 whose height is slightly larger than the vertically arranged heights, and a rectangular plate-shaped base part 71 that extends upwardly at a position slightly on the contracting side from the extension side end of the slide rail at the upper end of the base part 71. An extension side shock absorber holding portion 72 is formed to protrude.
A shock absorber 8 and an auxiliary shock absorber 9, which will be described later, are installed in the extension side shock absorber holding section 72.

The substrate 32A of the upper first inner member 3A is superimposed and fixed on one side of the base 71 of the inner bracket 7 formed in this way, and the upper first inner member The lower first inner member 3B is arranged parallel to the inner member 3A and has the same length, and the base 71 and the substrate 32B are similarly superimposed and fixed.
As shown in FIG. 4, on the other side of the base 71, an upper second inner member 4A is fixed so as to be back to back with the upper first inner member 3A, and back to back with the lower first inner member 3B. The lower second inner member 4B is fixed in this way.

Next, the ball retainer will be explained in detail. Since the first upper ball retainer to the second lower ball retainer 5A, 5B, 6A, and 6B are formed in the same shape, only the first upper ball retainer 5A will be described in detail.
The upper first ball retainer 5A is made of a band-shaped metal plate and has a length of approximately two-thirds of the upper first outer member 1A. A U-shaped substrate 51A having a thickness that can be inserted into the U-shaped substrate 51A, and upper and lower bent edges 11A, 11A, and 31A of the upper first outer member 1A and the upper first inner member 3A, which protrude in an L-shape from both upper and lower ends of the U-shaped substrate 51A. , 31A, and holds a plurality of balls 500 rotatably in the sliding direction of the upper and lower projecting edges 52A, 52A.
An elongated stopper 53A is provided near the longitudinal center of the upper first ball retainer 5A, protruding from the U-shaped base plate 51A toward the base plate 32A of the upper first inner member 3A.
When the slide rail is extended, the extension stopper 53A comes into contact with a stopper 54A provided approximately in the longitudinal center of the first inner member 3A, and serves as a stopper on the extension side.

The slide rail 100 is configured as described above, and allows the inner member 34 to slide relative to the first outer member 1 in the pulling-out (extending) direction, and the second outer member 2 sliding relative to the inner member 34 in the pulling-out (extending) direction. (Slide) will look like this:
Note that in normal usage, the first outer member 1 is installed on a fixed body such as a housing, and the second outer member 2 is installed on a movable body such as a drawer.

As shown in FIG. 2, when the contracted end of the inner member 34 is close to the contracted end of the first outer member 1 and the contracted end of the second outer member 2 is close to the contracted end of the inner member 34, the slide rail 100 is most contracted. state. In this embodiment, since the long lengths of the first outer member 1 and the second outer member 2 are set to be the same, the extended side ends of the first outer member 1 and the second outer member 2 are in the most contracted state. They are almost in the same position.

Next, when the second outer member 2 slides in the extension (pulling out) direction relative to the inner member 34, the balls 500 are applied to each of the upper second outer member 2A and the lower second outer member 2B of the second outer member 2. The fitted upper second ball retainer 6A and lower second ball retainer 6B move toward the extension (drawing) side with a movement amount that is half the movement amount of the second outer member 2.
Eventually, the extension stoppers 61A and 61B of the upper second ball retainer 6A and the lower second ball retainer 6B come into contact with the extension stops 43A and 43B of the upper second inner member 4A and the lower second inner member 4B, and The upper second ball retainer 6A and the lower second ball retainer 6B stop sliding.
Then, when the second outer member 2 is pulled out, the contraction side ends of the upper second ball retainer 6A and the lower second ball retainer 6B are on the extension side of the upper second outer member 2A and the lower second outer member 2B. During movement, the second outer member 2 comes into contact with the stoppers 23A and 23B, and sliding of the second outer member 2 with respect to the inner member 34 is stopped.

Furthermore, when the second outer member 2 is pulled out as it is, the second outer member 2 and the second ball retainer are in contact with each other, and the second ball retainer and the second inner member are in contact with each other, so that Then, the inner member 34 slides in the extension direction with respect to the first outer member 1 so as to be pushed out by the upper second ball retainer 6A and the lower second ball retainer 6B.

When the inner member 34 slides to the extension side, the upper first ball retainer 5A and the lower first ball retainer 5B move to the extension (drawing) side with a movement amount that is half of the movement amount of the inner member 34, as described above. .
Eventually, the extension side ends of the upper first ball retainer 5A and the lower first ball retainer 5B come into contact with the stoppers 23A and 23B during the extension side movement of the upper first outer member 1A and the lower first outer member 1B, and the first The upper first ball retainer 5A and the lower first ball retainer 5B stop sliding with respect to the outer member 1.
Then, when the second outer member 2 is pulled out, the extension stoppers 51A and 51B of the upper first ball retainer 5A and the lower first ball retainer 5B stop the extension of the upper first inner member 3A and the lower second inner member 3B. The inner member 34 comes into contact with the stoppers 33A and 33B and stops sliding.
This state is the most extended state of the slide rail 100.
Note that the sliding movements of the outer member, inner member, and ball retainer during extension do not necessarily occur in the order described above, and the timing of sliding may change slightly depending on each sliding resistance. Eventually, the stopper provided on each member during extension comes into contact and the sliding stops.

The transition from the most extended state to the most contracted state of the slide rail 100 is opposite to the above-described extension operation.
Similar to the case of extension, the sliding movement during contraction does not necessarily move sequentially in the opposite direction, and the timing of sliding may change slightly depending on each sliding resistance, but in the end, , the stopper provided on each member during contraction comes into contact and the sliding stops.

The basic configuration of the slide rail 100 has been described above, and next, a case where a shock absorber is provided will be described.
The maximum extension and maximum contraction of the slide rail 100 are regulated by the contact of each stopper, but the main purpose is to prevent loud noises from being generated and deformation/damage of each stopper at the time of such contact. A shock absorber is installed for this purpose.
In this embodiment, in addition to the shock absorbing device, an auxiliary shock absorbing material is provided to prevent damage to the shock absorbing device.

The shock absorber 8 consists of a cylinder 81, a piston rod 82, a contact body attached to the tip of the piston rod 82, and a piston inside the cylinder 81. Oil is sealed in the cylinder 81, and the shock absorber 8 is an oil damper that utilizes the viscosity of the oil. The damping force is generated by a piston regulating valve connected to a piston rod 82 inside the cylinder 81, and is widely known.
The shock absorber 8 in the embodiment includes a coil spring in the cylinder 81 and is always biased in a direction to push the piston rod 82 toward the extension side, so that even if the piston rod 82 contracts due to an external force, the external force disappears. Due to this biasing force, the piston rod 82 is extended to its original state.
The shock absorber 8 may be of an air cylinder type that utilizes air flow instead of oil, if necessary.
The auxiliary cushioning material 9 uses a compression coil spring in this embodiment. However, depending on the specifications of the article for which the slide rail is used, elastic materials such as rubber, sponge, or pieces of synthetic resin may be used.

Two shock absorbers 8 and two auxiliary shock absorbers 9 are prepared, and are installed in the extension side shock absorber holding section 72 of the inner bracket 7 and the contraction side shock absorber holding section 102 of the first outer member base material 10.
The extension-side shock absorber holding part 72 consists of a shock absorber holding part 72a, an auxiliary shock absorbing material contact part 724, and a steady rest part 725. The shock absorber holding part 72a extends from the upper end of the base part 71 to An upper protruding piece 721 whose length is slightly longer than the shaku length and protrudes upward; and an upper holding piece formed by bending the protruding end of the upper protruding piece 721 in the direction of the upper and lower bent edges 41A of the upper second inner member 4A. 722, and a holding portion 723 that projects in the same direction as the upper holding piece 722 is formed at a lower part of the upper holding piece 722 and closer to the contraction side, with a space therebetween.
The auxiliary cushioning material abutting part 724 projects upward from the upper end of the base part 71 by about half the height of the upper protruding piece 721 at a position on the extension side of the upper protruding piece 721 and away from the upper protruding piece 721. It is bent from the protruding end in the same direction as the upper holding piece 722, and further bent upward from the bent tip.
The steady rest part 725 protrudes upward from the upper end of the base part 71 to the same height as the upper protruding piece 721 at a position on the contraction side of the upper protruding piece 721 and away from the upper protruding piece 721, and extends from the protruding end to the upper holding piece. It is formed by being bent in the same direction as 722.
A movement restricting part 726 is formed between the shock absorber holding part 72a and the steady rest part 725, and is formed by once protruding from the base part 71 and being bent in the same direction as the upper holding piece 722.

The contraction side shock absorber holding part 102 is formed in the lower part of the first outer member base material 10 and is vertically and front and back symmetrical with the extension side shock absorber holding part 72. It consists of a material contacting part 1024 and a steady rest part 1025.
The shock absorber holding portion 102a includes a lower protruding piece 1021 that protrudes downward from the lower end of the connection base 101 with a length slightly longer than the long length of the cylinder 81, and a lower first outer at the protruding tip of the lower protruding piece 1021. A lower holding piece 1022 is formed by bending the member 1B in the direction of the upper and lower bent edges 11B, and a lower holding piece 1022 protrudes in the same direction at a distance from the lower holding piece 1022 at the lower part of the lower holding piece 1022 and closer to the contraction side. A holding portion 1023 is formed.
The auxiliary cushioning material abutting portion 1024 protrudes downward from the lower end of the connection base 101 by about half the height of the lower protruding piece 1021 at a position farther from the lower protruding piece 1021 on the contraction side than the lower protruding piece 1021, It is formed by being bent from the protruding end in the same direction as the lower holding piece 1022, and further bent downward from the bent tip.
The steady rest part 1025 protrudes downward from the lower end of the connection base 101 at the same height as the lower protruding piece 1021 at a position on the extension side of the lower protruding piece 1021 and away from the lower protruding piece 1021, and extends from the protruding end to the lower holding piece. It is formed by being bent in the same direction as 1022.
A movement restricting portion 1026 is formed between the shock absorber holding portion 102a and the steady rest portion 1025, which once protrudes from the connection base 101 and is bent in the same direction as the lower holding piece 1022.

The extension side shock absorber holding part 72 and the contraction side shock absorber holding part 102 are formed as described above, and the shock absorber 8 and the auxiliary cushioning material 9 are formed as follows: the extension side shock absorber holding part 72 and the contraction side shock absorber holding part 102.
First, with the second outer member base material 2C not attached, the auxiliary cushioning material 9 is compressed into the space formed by the upper protruding piece 721, the upper holding piece 722, and the holding part 723 of the shock absorber holding part 72a. It is inserted so that the direction corresponds to the sliding direction of the slide rail 100, and the extension side end surface is placed in contact with the contraction side end surface of the auxiliary cushioning material abutting part 724.

Next, in the shock absorbing device 8, the piston rod 82 faces the contraction side, the cylinder end face on the expansion side is brought into contact with the contraction side end face of the auxiliary cushioning material 9, the cylinder end face on the contraction side is brought into contact with the cylinder end face on the contraction side, and the expansion side of the movement regulating part 726 is the end face Insert it so that it is in contact with the
In this state, the shock absorber 8 is arranged so that the piston rod 82 is surrounded by the steady rest part 725, and the cylinder 81 is in contact with the movement restricting part 726 on the contraction (piston rod 82) side, so the shock absorber 8 is on the contraction side. Since the cylinder 81 is only in contact with the auxiliary cushioning material 9 on the extension side, it is attached so that it can slide in the sliding direction by the amount that the auxiliary cushioning material 9 can compress.

In this way, the shock absorber 8 is mounted in the opposite direction of the facing side of the upper and lower bent edges 41A, 41A of the upper second inner member 4A (in the opposite direction of the facing side of the upper and lower bent edges 21A, 21A of the upper second outer member 2A). ) That is, as shown in FIG. 4, it is located above the upper bent edge 41A, and the piston rod 82 is attached so as to expand and contract in parallel to the sliding direction of the slide rail while extending toward the contraction side. From this state, it is installed so as to generate a damping force when the piston rod 82 is extended, and a damping effect is produced when the slide rail 100 is extended.

Next, a method of attaching the shock absorber 8 that produces a shock absorbing effect during contraction will be explained.
When the first outer member 1 is not attached to the inner member 34, the lower first outer member 1B is placed in the space formed by the lower protruding piece 1021, the lower holding piece 1022, and the holding part 1033 of the shock absorber holding part 102a. The auxiliary cushioning material 9 is inserted from the attached side so that the compression direction is in the sliding direction of the slide rail 100, and the auxiliary cushioning material 9 is arranged so that the contraction side end surface contacts the expansion side end surface of the auxiliary cushioning material abutting part 1024.

Next, in the shock absorbing device 8, the piston rod 82 faces the extension side, the end face of the cylinder on the contraction side is in contact with the end face of the extension side of the auxiliary cushioning material 9, the end face of the cylinder on the extension side is brought into contact with the end face of the cylinder on the contraction side, and the end face of the cylinder on the contraction side of the movement regulating part 736 is the end face. Insert it so that it is in contact with the
In this state, the shock absorber 8 is arranged so that the piston rod 82 is surrounded by the steady rest part 735, and the cylinder 81 is in contact with the movement restricting part 1026 on the extension (piston rod 82) side, so the shock absorber 8 is on the extension side. On the contraction side, the cylinder 81 is only in contact with the auxiliary cushioning material 9, so it is attached so that it can slide in the sliding direction by the amount that the auxiliary cushioning material 9 can compress.

In this way, the shock absorber 8 is mounted in the opposite direction of the facing side of the upper and lower bent edges 41B, 41B of the lower first outer member 1B (in the opposite direction of the facing side of the upper and lower bent edges 11B, 11B of the lower second outer member 2B). ) That is, as shown in FIG. 4, it is located below the lower bent edge 11B, and the piston rod 82 is attached so as to expand and contract in parallel to the sliding direction of the slide rail while extending in the extension side. In this state, the piston rod 82 is installed to produce a damping force when it contracts, and a damping effect is produced when the slide rail 100 contracts.

Next, with the slide rail 100 assembled,
The lower end of the base portion 71 of the inner bracket 7 projects downward from the lower bent edge 11B of the lower first outer member 1B.
Therefore, the cylinder 81 that produces a cushioning effect when contracted is held at the lower end of the base portion 71 so as not to come off toward the inner bracket 7 side.
Further, the upper end of the connection base 21C of the second outer member base material C projects upward from the upper bent edge 21B of the upper second outer member 2A.
Therefore, the cylinder 81 that produces a cushioning effect when expanded is held at the upper end of the connection base 21C so as not to come off toward the second outer member base material C side.
The upper holding piece 722 and the lower holding piece 1022 are sloped downward and upward, respectively, toward the bent end sides, and the cylinder 81 is held at the sloped portions, and the base portion 71 , holds the cylinder 81 together with the protrusion of the connection base 21C.

A method of operating the shock absorbers 8, 8 installed in this manner will be explained.
The buffering effect is such that during the sliding process of the slide rail 100, the extension operation piece 22C or the contraction operation piece 23C formed on the aforementioned connection base 21C comes into contact with the contact body 83, and the slide rail 100 is prevented from sliding. This is generated by pushing the piston rod 82 with the actuating piece and utilizing the damping force of the shock absorber 8.
Therefore, the extension actuating piece 22C and the retracting actuating piece 23C are arranged on the trajectory extension of the piston rod 82 of the shock absorber 8 in the compression and expansion directions, respectively.

First, when the second outer member 2 is pulled out from the most contracted state of the slide rail shown in FIG. 5, the second outer member 2 slides to the extension side together with the inner member 34.
Incidentally, in this embodiment, the second outer member 2 and the inner member 34 are slidably attached to each other at the same time by a temporary fixing member made of resin, which is a known technique.
Then, when the second outer member 2 is further pulled out, the inner member 34 becomes the most extended state with respect to the first outer member 1, as shown in FIG.
Next, the second outer member 2 is pulled out from the inner member 34, and as shown in FIG. The contact body 83 is contacted.

Then, when the second outer member 2 is extended as it is, the piston rod 82 is pushed into the cylinder 81 by the operating piece 22C during extension, and at this time a damping force is generated, so the slide rail is extended so that the brake can be applied. This not only prevents the generation of loud noises when the slide rail comes into contact with the stoppers, and prevents deformation and damage to each stopper, but also suppresses the generation of impact force on items attached to the slide rails. Can be done.
Then, while the brake is applied by the shock absorber 8, the second outer member 2 becomes the most extended state with respect to the inner member 34, and the slide rail 100 becomes the most extended state, as shown in FIG.

The auxiliary buffer material 9 is for increasing the durability of the buffer device 8.
When the slide rail 100 is attached to an article such as a drawer and extends vigorously, the operating piece 22C presses the piston rod 82 vigorously during extension, and a large impact (pressing force) is applied to the shock absorber 8. In addition, the capacity of the shock absorber 8 is exceeded, and not only the speed cannot be adjusted, but also an excessive load is applied to the shock absorber 8, causing the shock absorber 8 to be easily damaged.
Therefore, when a large impact is applied to the shock absorber 8, since the shock absorber 8 is installed so that it can move in the sliding direction, the shock is transmitted through the piston rod 82 and the cylinder 81 crushes the auxiliary shock absorber 9. The auxiliary cushioning material 9 moves as shown in FIG.

The operation of producing a buffering effect when the slide rail 100 is retracted is the same as that described above, and as shown in FIG. The contracting actuating piece 23C of the connection base 21C contacts the contact body 83 of the shock absorber 8 held by the shock absorber holding portion 102a.
Then, when the second outer member 2 is contracted, the piston rod 82 is pushed into the cylinder 81 by the contraction actuation piece 23C, and at this time a damping force is generated, so the slide rail contracts so that the brake can be applied. This not only prevents the generation of loud noises when the slide rail comes into contact with the stoppers, and prevents deformation and damage to each stopper, but also suppresses the generation of impact force on items attached to the slide rail. can.

Similarly, when a large shock is applied to the shock absorber 8, the auxiliary shock absorber 9 is installed in the shock absorber 8 so that it can move in the sliding direction, so the shock is transmitted through the piston rod 82 and the cylinder 81 is moved. The auxiliary cushioning material 9 is moved so as to be crushed, and the impact force is alleviated by the elastic force of the auxiliary cushioning material 9.The auxiliary cushioning material 9 that has been crushed returns to its original position while relieving the impact force and performs the buffering action. to move to.

The steady rests 725 and 1025 prevent the piston rods 82 and 82 from bending more than necessary in the direction perpendicular to the sliding direction when the piston rods 82 and 82 are pushed into the extension actuating piece 22C and the retracting actuating piece 23C. It also has the effect of guarding against unnecessary objects coming into contact with the piston rod 82.
As described above, the product of the present invention can produce a cushioning effect during expansion and contraction with a simple configuration that only requires brackets being provided on the outer member and the inner member.
The above is the first embodiment of the slide rail equipped with a shock absorbing device that produces a shock absorbing effect during expansion and contraction.

Next, a second example will be described.
The basic structure of the slide rail is the same as that in the first embodiment, so only the different structures will be explained.
As shown in FIGS. 10 and 11, the extension side shock absorber holding section 72 is formed near the contracted end side of the second outer member base material 21C, and the contraction side shock absorber holding section 102 is formed on the second outer member base material 21C. An extension operating piece 22C is formed on the inner bracket 7, and a retraction operating piece 23C is formed on the first outer member base material 10.
The piston rod 81 of the shock absorber 8 is installed in the extension side shock absorber holding part 72 so as to protrude toward the extension side, and the piston rod 81 of the shock absorber 8 is installed in the contraction side shock absorber support part 102 so as to protrude toward the contraction side. It is set up so that
The extension operating piece 22C is arranged at the extension side end of the inner bracket 7 on the extension of the trajectory of the compression and extension direction of the piston rod 82 of the shock absorber 8 of the extension side shock absorber holding portion 72.
The contraction operating piece 23C is arranged at the extension side end of the first outer member base material 10 on the trajectory extension in the compression and extension direction of the piston rod 82 of the shock absorber 8 of the contraction shock absorber holding section 102.

As described above, in the second embodiment, the shock absorbing device is installed on the second outer member 2 side, and the operating piece for operating the shock absorbing device is installed on the inner member 34 and the first outer member 1 side. .
When the second outer member 2 extends with respect to the inner member 34, the slide rail with a shock absorbing device of the second embodiment formed in this way is activated by the extension actuator located at the extension side end of the inner bracket 7. The contact body 83 of the shock absorber 8 of the extension side shock absorber holding part 72 comes into contact with the piece 22C (FIG. 12), and the piston rod 82 contracts in accordance with the extension of the second outer member 2, exerting a damping force and applying the brake. At the same time, the slide rail extends (Fig. 13).

When the second outer member 2 contracts with respect to the inner member 34 and then the inner member 34 contracts with respect to the first outer member 1, the contraction operation piece 23C of the first outer member 1 The abutting body 83 of the shock absorber 8 of the contraction-side shock absorber holding part 102 comes into contact (FIG. 14), and the piston rod 82 contracts in accordance with the contraction of the second outer member 2, exerting a damping force and moving the slide rail while applying the brake. contracts.
As described above, in the second embodiment, as in the first embodiment, a buffering effect can be produced during expansion and contraction with a simple configuration of just providing brackets on the outer member and the inner member.

As described above, a slide rail with a shock absorbing device that produces a shock absorbing effect during expansion and contraction is configured.
As shown in the first and second embodiments, a set of shock absorbers or operating pieces that act during extension and contraction are installed on the second outer member 2 side on the movable side, and on the inner member 34 side during extension. A buffering effect is created when the slide rail 100 is extended and contracted by installing a shock absorbing device or an operating piece on the fixed side of the first outer member 1 and installing a shock absorbing device or an operating piece that acts when the slide rail 100 contracts. Can be done.
For example, a shock absorber or actuating piece that acts during extension and contraction is installed as a set on the second outer member 2 on the moving side, and a shock absorber or actuating piece that acts during expansion and contraction is set on the inner member 34 side. In this case, if the second outer member 2 side contracts first with respect to the inner member 34, it may not be possible to produce a buffering effect when the slide rail 100 is fully contracted.
Therefore, by adopting the configuration of the product of the present invention, it is possible to stably produce a buffering effect when the slide rail 100 is extended and contracted.

In the above embodiment, two members are arranged vertically in parallel for each of the first outer member, inner member, and second outer member. Even if the first outer member, inner member, and second outer member are all made up of one slide rail, the second outer member and inner member are provided with a bracket, and a shock absorber is attached to the bracket. The same effect as in the previous embodiment can be produced by installing the bracket and installing the actuating piece on the other bracket.
Of course, on the contrary, the number of members may be increased to three or four.

As in this embodiment, when two members are arranged vertically in parallel for each of the first outer member, inner member, and second outer member, the heavy object is generally fixed to the movable outer member. It is often opened and closed by sliding.
In the case of heavy objects, if there is no shock absorber, the slide rail will collide due to inertia when it is at its maximum extension or maximum contraction. It may occur. Therefore, the slide rail with a shock absorbing device according to the present invention, which is effective both during opening and closing, is suitable as a slide rail for heavy objects.

As described above, the slide rail of the present invention can be used not only for pull-out storage furniture but also for a wide range of applications, such as grills on cooking tables, paper trays for copying machines that slide open and close heavy objects, and automatic teller machines. It is.

100 Slide rail 1A Upper first outer member 11A Upper and lower bent edges 12A Substrate 13A Extension side movement stopper 14A Contraction side movement stopper 1 First outer member 1B Lower first outer member 10 First outer member base material 101 Connection base 102 Contraction side shock absorber holding part 102a Shock absorber holding part 1021 Lower protruding piece 1022 Lower holding piece 1023 Holding part 1024 Auxiliary shock absorbing material contact part 1025 Steady rest part 1026 Movement regulating part 2 Second outer member 2A Upper second outer member 2B Lower Second outer member 2C Second outer member base material 21C Connection base 22C Extension actuation piece 23C Retraction actuation piece 3A Upper first inner member 31A Upper and lower bent edges 32A Substrate 33A Extension stopper 34 Inner member 3B Lower first inner member 4A Upper second inner member 4B Lower second inner member
5A Upper first ball retainer 51A Substrate 52A Upper and lower projecting edges 53A Extension stopper 5B Lower first ball retainer 500 Balls 6A Upper second ball retainer 6B Lower second ball retainer 7 Inner bracket 71 Base part 72 Extension side shock absorber holding part 72a Buffer Device holding part 721 Upper protruding piece 722 Upper holding piece 723 Holding part 724 Auxiliary cushioning material contacting part 725 Steady rest part 726 Movement regulating part 8 Shocking device 81 Cylinder 82 Piston rod 83 Contact body 9 Auxiliary cushioning material

Claims (3)

A first outer member, a second outer member, a first inner member slidably held by the first outer member with a ball, and a second inner member slidably held by the second outer member with a ball. member, a first ball retainer that rotatably holds the balls on the first outer member side, and a second ball retainer that rotatably holds the balls on the second outer member side; The two inner members are integrated with each other via a bracket to form an inner member, and the inner member is slidable with respect to the first outer member, and the second outer member is slidable with respect to the inner member. In the slide rail that is possible, a buffer device that generates a buffering effect when the slide rail is extended and a buffer device that generates a buffer effect when the slide rail contracts are provided, respectively, and the buffer device provides a buffering device that generates a buffering effect when the slide rail is extended and contracted. A slide rail equipped with a shock absorbing device that reduces shock in any case. The shock absorber generates a shock absorbing effect by being compressed in the sliding direction of the slide rail, and the compression is performed by an operating piece that moves as the slide rail slides, A shock absorber that generates a shock absorbing effect when extended is provided on the bracket, a shock absorber that generates a shock absorbent effect when contracted is provided on the first outer member side, and each operating piece that compresses each shock absorber is provided on the second outer member side. The slide rail with a shock absorbing device according to claim 1, further comprising a shock absorbing device. The shock absorber generates a shock absorbing effect by being compressed in the sliding direction of the slide rail, and the compression is performed when the shock absorber comes into contact with the actuating piece as the slide rail slides. A shock absorber that generates a shock absorbing effect during extension and a shock absorber that generates a shock absorber effect during contraction are provided on the second outer member side, and an operating piece that compresses the shock absorber during extension is provided on the bracket. 2. The slide rail with a shock absorber according to claim 1, further comprising an operating piece provided on the first outer member side to compress the shock absorber when the shock absorber is compressed.

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