JP6936507B2 - Chair seat slide lock device - Google Patents

Description

The present invention relates to a chair seat slide locking device, which primarily relates to a device capable of locking the position of the seat.

In the conventional reclining chair in which the seating and reclining can be adjusted, the rod body is installed on the pedestal, and the rod body is equipped with a lock mechanism capable of moving on the rod body. By joining the lock mechanism to the seat, the movement of the seat can be adjusted, and the lock mechanism can move along the rod body correspondingly. After moving to the set position, the lock mechanism is fixed to the rod body again. It is common to let the seat decide the position of the seat. Normally, when the seat moves, the backrest is interlocked, and it is possible to use it by adjusting it to the normal sitting angle or reclining angle.

However, most of the conventional lock mechanisms are fixed by fastening the rod body with a knob, and the fastening method has drawbacks such as inconvenience of operation and uncertain positioning in the unfastened state. .. Further, in the process of loosening and adjusting the knob, since the backrest at the backward tilt angle is in a wobbling state, the gravity received by the backrest becomes large and it is easy to tilt backward to the maximum angle, which has a drawback that the angle adjustment is inconvenient. ..

In order to improve the above-mentioned drawbacks, for example, the locking device of Patent Document 1 mainly includes a clamp seat, a positioning block, an adjusting rod, and a coupling mechanism. The clamp seat and the seat are interlocked with each other, a sleeve hole for connecting the chair rod to the sleeve is provided, and first and second pedestals that can be opened and sandwiched relative to each other are provided. The positioning block is provided on the clamp seat. The adjusting rod is provided by being coupled to one side of the positioning block by a coupling mechanism, and includes a positioning portion that is joined to the positioning block. The first and second pedestals can be opened by rotating the adjusting rod, and the seat can slide on the rod in conjunction with the clamp seat. Further, by rotating the adjusting rod when it moves to a predetermined position, the first and second pedestals can sandwich the rod body, and the positions of the clamp seat and the seat can be locked.

The above-mentioned structure has the effect of simplifying the operation by rotating the adjusting rod to open the first and second pedestals or to sandwich the rod body and lock it by a friction method. However, the adjustment rod also moves according to the movement of the seat and the clamp, and the user cannot control the adjustment rod at the position of the familiar hand. In addition, if the clamp moves slightly forward to form a reclining posture, the user cannot adjust by grasping the adjustment rod that has moved forward without getting up, which is inconvenient for adjustment. was there.

U.S. Pat. No. US7735925

An object of the present invention is to provide a chair seat slide lock device capable of locking the seat position and having good operability / convenience and lock stability.

The slide lock device of the present invention includes a positioning tube and a slide base that can move along the positioning tube.
The positioning tube is placed on at least one rod body provided on the pedestal of the chair, is rotatable with respect to the rod body, does not move in the axial direction of the rod body, and is attached to the positioning tube. Is provided with a positioning portion.

The slide base has a joint on one side that connects to the side of the seat of the chair and a sleeve on one side of the joint. The sleeve portion is provided with a sleeve hole into which the positioning tube can be fitted, and the sleeve portion is provided with a locking portion.

Further, the slide base can be moved along the positioning tube when the positioning tube is rotated on the rod body and the positioning portion and the locking portion are not joined, and the positioning tube is rotated on the rod body. The position is locked by joining the positioning portion and the locking portion.

Further, the positioning portion protrudes outward from the positioning pipe and extends in the axial direction, and the sleeve hole of the slide base is provided with a recess at a position corresponding to the positioning portion of the positioning pipe. Further, the locking portion is provided at a position on one side corresponding to the recess in the sleeve hole.
Further, the positioning portion of the positioning tube is provided with a first convex tooth group along the axial direction. The locking portion of the slide base includes a second convex tooth group that can mesh with the first convex tooth group.
The positioning tube is rotated on the rod member, and is joined to the positioning portion and the locking portion, the first convex teeth can be bonded to the second convex teeth.

In the present invention, the position of the seat can be adjusted by locating the positioning portion of the positioning pipe in the recess of the slide base, and the positioning portion and the locking portion are locked by friction joining by rotating the positioning pipe. be able to. As a result, the seat of the present invention can be pivotally installed with the backrest, and the angle of the backrest can be adjusted at the same time as the seat is moved.

Preferably , the first convex tooth group includes a plurality of continuously arranged first convex teeth, and the direction of the end portion of the first convex teeth substantially corresponds to the direction perpendicular to the axial direction of the positioning tube. .. Second Totsuhagun was or is provided with a plurality of second protruding teeth that can be engaged with the first protruding teeth.

Preferably, a handle protruding in the radial direction is provided on the outside of the positioning tube.

In the present invention, the handle is controlled to rotate the positioning tube, and when the positioning portion and the locking portion are joined, the first convex tooth of the first convex tooth group and the second convex tooth of the second convex tooth group can be joined. A good friction engagement method has a better effect on stabilizing the positioning, and also has the effect of reliably locking the position of the slide base, the seat and the angle of the backrest. There is.

In the present invention, the slide base can be moved during the adjustment operation, but since the handle is in the fixed position as it is, the user can easily operate by grasping the handle with a familiar operation, which is convenient. Can have the effect of becoming.

It is the schematic of the chair of this invention. It is an exploded view of the lock device of this invention. It is the schematic of the unlocked state of this invention. It is the schematic which adjusts the seat position of this invention. It is the schematic of the locked state of this invention. It is a plan view of the locked state of this invention.

See FIGS. 1 to 3. The present invention includes a pedestal 1, a seat 2, a backrest 3, and a locking device 4. The pedestal 1 is provided with two support plates 11 that stand upright with respect to each other, an armrest frame 12 is provided above the two support plates 11, and a rod body 13 is provided between the support plate 11 and the armrest frame 12. Further, the backrest 3 is pivotally installed with the pedestal 1 and the seat 2, and the seat 3 moves corresponding to the seat 2 so that the backward tilt angle can be changed.

The locking device 4 is provided on at least one rod body 13 and includes a positioning tube 41 and a slide base 42. The positioning tube 41 is placed on the rod body 13, is rotatable with respect to the rod body 13, and does not move in the axial direction of the rod body 13. Further, a positioning portion 411 extending along the axial direction is provided on the outside of the positioning pipe 41 so as to project, and the positioning portion 411 is provided with a first convex tooth group 412 along the axial direction. The first convex tooth group 412 includes a plurality of continuously arranged first convex teeth 413 whose end directions substantially correspond to directions perpendicular to the axial direction of the positioning tube 41. Further, a handle 414 protruding in the radial direction is provided on the outside of the positioning tube 41.

One side of the slide base 42 is provided with a joint portion 421 that is coupled so as to interlock with the side of the sheet 2. One side of the joint portion 421 is provided with a sleeve portion 422, and the sleeve portion 422 is provided with a sleeve hole 423 into which the positioning tube 41 can be fitted. The sleeve hole 423 is provided with a recess 424 at a position corresponding to the positioning portion 411 of the positioning tube 41. Further, a locking portion 425 made of a good non-slip material is provided on one side corresponding to the recess 424 in the sleeve hole 423. The locking portion 425 includes a second convex tooth group 426 that can mesh with the first convex tooth group 412, and the second convex tooth group 426 has a plurality of second convex teeth that can mesh with the first convex tooth group 412. It has teeth 427.

See FIGS. 3 and 4. In the present invention, when the handle 414 is controlled so that the positioning portion 411 of the positioning tube 41 corresponds to the recess 424 of the slide base 42, the slide base 42 can be moved along the axial direction of the positioning tube 41 and the seat. The position of 2 and the backward tilt angle of the backrest 3 can be freely adjusted.

See FIGS. 4-6. In the present invention, after adjustment, the handle 414 is controlled to rotate the positioning tube 41 on the rod body 13, and the positioning portion 411 is displaced from the recess 424 of the sleeve hole 423 and joined to the locking portion 425 to join the slide base 42. The first convex tooth 413 of the first convex tooth group 412 corresponding to the adjusted position can be joined to the second convex tooth 427 of the second convex tooth group 426. It is possible to provide better positioning stability than the conventional friction engagement method, and it is possible to have the effect of reliably locking the position of the slide base 42, the seat 2 and the angle of the backrest 3.

According to the present invention, the slide base 42 can be moved to a different position during the adjustment operation. Since the handle 414 is in the fixed position as it is, the user can easily operate the handle 414 by grasping the handle 414 with a familiar operation. The handle 414 of this embodiment is located relatively close to the backrest 3, so that the user can handle with the same hand length even when the backrest 3 provides the user with reclining at a relatively large backward tilt angle. It can be operated by grasping the 414, and can have an excellent effect of making the operation convenient.

Further, in the present invention, even when the positioning tube is not provided with the first convex tooth group and the slide base is not provided with the second convex tooth group, the positioning portion and the engaging portion can be locked by a friction method. Even with this structure, it is possible to have the effect of fixing the position of the handle and facilitating operation.

The present invention can have the effect of making good locking stability and operation convenient by the above, and although the description of specific examples has been described, many of them do not deviate from the technical scope of the present invention. Modifications and changes can be made and the scope of the invention is defined by the claims.

1 Pedestal 11 Support plate 12 Armrest frame 13 Rod body 2 Seat 3 Backrest 4 Locking device 41 Positioning tube 411 Positioning part 412 First convex tooth group 413 First convex tooth 414 Handle 42 Slide base 421 Joint part 422 Sleeve part 423 Sleeve hole 424 Recess 425 Locking part 426 Second convex tooth group 427 Second convex tooth

Claims (3)

It was placed on at least one rod body provided on the pedestal of the chair, was rotatable with respect to the rod body, and did not move in the axial direction of the rod body, and a positioning portion was provided. Positioning tube and
A slide base that can move along the positioning tube, with a joint on one side that joins to interlock with the side of the seat of the chair, a sleeve on one side of the joint, and the sleeve. The portion is provided with a sleeve hole into which the positioning tube can be fitted, the sleeve hole is provided with a locking portion, and the positioning tube is rotated on the rod body to rotate the positioning tube and the locking portion. It can move along the positioning tube when it is not joined, and the position is locked by rotating the positioning tube on the rod body and joining the positioning portion and the locking portion. Slide base and
Including
The positioning portion protrudes outward from the positioning tube and extends in the axial direction.
The sleeve hole of the slide base is provided with a recess at a position corresponding to the positioning portion of the positioning tube, and the locking portion is provided at a position on one side corresponding to the recess in the sleeve hole. Has been
The positioning portion of the positioning tube is provided with a first convex tooth group along the axial direction, and the locking portion of the slide base is a second convex tooth group that can mesh with the first convex tooth group. Is equipped with
Chair said positioning tube is rotated on the rod member, and is joined to the previous SL locking part the positioning unit, characterized in that said first convex teeth can be bonded to the second convex teeth Seat slide lock device. The first convex tooth group includes a plurality of continuously arranged first convex teeth, and the direction of the end portion of the first convex tooth substantially corresponds to the direction perpendicular to the axial direction of the positioning tube. ,
The chair seat slide lock device according to claim 1 , wherein the second convex tooth group includes a plurality of second convex teeth that can be meshed with the first convex tooth. The chair seat slide lock device according to claim 1, wherein a handle projecting in the radial direction is provided on the outside of the positioning tube.

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