CN210870581U - A folding chair leg bracket - Google Patents

Abstract

The utility model relates to a folding chair foot bracket, which comprises a mounting seat, a chair foot, a linkage portion, a telescopic portion, a locking portion and an unlocking portion, wherein a plurality of the chair feet are respectively arranged on the outer periphery of the mounting seat for rotation at intervals; A first tooth portion is arranged on the upper portion; the linkage portion is movably arranged in the mounting seat, the outer periphery of the linkage portion is provided with a second tooth portion, and the first tooth portions of the chair legs respectively pass through the mounting seat and the second tooth portion. The teeth are engaged; the telescopic part is movably arranged in the linkage part, and can extend to the outside of the side surface of the linkage part; the locking part is fixed on the mounting seat, and the locking part is provided with a locking groove; the unlocking part is arranged on the The telescopic part is connected with the telescopic part; when the leg bracket is unfolded, the telescopic part is inserted into the locking groove; when the leg bracket is in the folded state, the telescopic part is connected to the telescopic part. The locking slot is disengaged. The utility model solves the technical problem that the unfolding and folding of the existing seat support are inconvenient.

Description

A folding chair leg bracket

technical field

The utility model relates to a folding chair, in particular to a folding chair leg bracket.

Background technique

Folding chairs are easily foldable and portable. They are not only suitable for use in outdoor and temporary places, but also a must-have item for emergency use at home. The Chinese Patent Office has published a utility model patent with the application number of 201310466297.6 and the utility model name is a folding chair. The folding chair includes a seat bracket, a seat leg bracket, and a support block movably connecting the seat bracket and the seat leg bracket. The support block There are sockets for inserting the rods of the seat bracket and the foot rods of the chair foot bracket respectively. There is a seat cloth. When the seat bracket is unfolded, the rods of the seat bracket need to be inserted into the sockets of the support block one by one; when folded, the rods of the seat bracket need to be pulled out from the sockets of the support block one by one. Therefore, the unfolding and folding of the seat support is inconvenient.

Utility model content

The purpose of the utility model is to provide a folding chair leg bracket to solve the technical problem of inconvenient unfolding and folding of the existing seat bracket.

In order to solve the above-mentioned problems, the utility model provides a folding chair leg bracket, including:

mount;

a chair foot, a plurality of the chair feet are respectively arranged on the outer circumference of the mounting seat to rotate at intervals, and the chair foot is provided with a first tooth portion;

The linkage portion is movably arranged in the mounting seat, the outer periphery of the linkage portion is provided with a second tooth portion, and the first tooth portions of the chair legs respectively pass through the mounting seat and engage with the second tooth portion ;

a telescopic part, which is movably arranged in the linkage part and can be extended to the outside of the side surface of the linkage part;

a locking portion fixed on the mounting seat, and a locking groove is provided on the locking portion;

The unlocking part is arranged on the linkage part and is linked with the telescopic part. When the unlocking part is pressed, the telescopic part retracts into the linkage part; when the unlocking part is released, the telescopic part extends out. to outside the linkage department;

In the unfolded state of the chair leg bracket, the telescopic part is inserted into the locking groove; when the chair leg bracket is in the folded state, the telescopic part is disengaged from the locking groove.

Preferably, the outer side of the mounting seat is provided with a plurality of communication grooves which are respectively communicated with the inside thereof, a connecting wall is respectively provided on both sides of the communication groove, and the end of each of the chair legs is rotated through a rotating shaft and arranged in the corresponding position. Between the two connecting walls, the first tooth portion is fixed on the outer periphery of the end portion, and the first tooth portion is engaged with the second tooth portion through the corresponding communication groove.

Preferably, the first tooth portion includes a plurality of teeth, the outer circumference of the end portion of the chair leg is a circular arc surface, and the plurality of teeth are arranged on the circular arc surface.

Preferably, the second tooth portion includes a plurality of rack teeth, the linkage portion includes a plurality of outer surfaces, each of the outer surfaces is respectively provided with a plurality of the rack teeth, and a tooth of the first tooth portion corresponds to a corresponding one. One of the rack teeth on the outer side meshes.

Preferably, the locking portion is fixed between two connecting walls of the communication groove, and the locking groove on the locking portion communicates with the interior of the mounting seat; the telescopic portion extends from the linkage portion The part and the locking part are located on the same side of the linkage part.

Preferably, an upper cover is fixedly arranged on the upper end of the mounting seat, and a hook is arranged on the inner side of the upper cover;

An insertion rod is fixed in the linkage part, and a tension spring is movably arranged in the linkage part, and its two ends are respectively hung on the hook and the insertion rod.

Preferably, the telescopic portion is laterally arranged at the lower end of the linkage portion, the unlocking portion is vertically movably arranged at the lower end of the linkage portion, and the telescopic portion is connected to the upper end of the unlocking portion:

In the linkage portion, the rear end of the telescopic portion is elastically connected with the rear inner wall of the linkage portion through an elastic member; a through hole is formed on the front side wall of the linkage portion, and the front end of the telescopic portion can pass through. through the through hole;

The middle part of the telescopic part is provided with a slope 1, and the unlocking part is provided with a slope 2 corresponding to the slope 1, pressing the unlocking part, the unlocking part is opposite to the slope 2 through the slope 1 The sliding moves the telescopic part in the direction of compressing the elastic member until the telescopic part retracts into the linkage part.

Preferably, the unlocking portion includes an upper end portion and a lower end portion that are fixedly connected, the upper end portion includes a bottom plate and two side plates, the bottom plate is fixedly connected to the upper end of the upper end portion, and the two side plates are respectively located at the On both sides of the bottom plate, the corresponding sides of the two bottom plates are respectively provided with one of the two slopes;

Two outer sides of the telescopic part are respectively provided with a groove, one side of the groove is provided with a slope, the upper ends of the two side plates are respectively movable in the grooves, and the slope is a slope. It is in contact with the slope two and can produce relative sliding.

Preferably, a lower end cover is fixedly arranged at the lower end of the linkage portion, an installation hole is formed on the lower end cover, the width of the installation hole is larger than the width of the lower end portion and larger than the width of the bottom plate, and the lower end The upper end portion protrudes from the mounting hole to below the mounting hole, and the upper end portion is located above the mounting hole.

Preferably, the front end of the telescopic part is provided with a slope 3, the slope 3 is located on the upper end surface of the telescopic part and slopes downward from the inside to the outside, and one end of the slope 3 is in the uncompressed state of the elastic member. It is located inside the linkage part, and the other end is located outside the linkage part.

Compared with the prior art, the utility model has the following technical effects:

The utility model provides a folding chair leg bracket, several chair legs can be folded and unfolded synchronously, and the operation steps are simplified, that is, the operation is simple and convenient, and saves time and effort.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained from these drawings without creative effort. In the attached picture:

1 is an exploded view of a folding chair leg support provided by a preferred embodiment of the present invention;

2 is a schematic structural diagram of a mounting seat provided by a preferred embodiment of the present invention;

3 is a side view of a locking portion provided by a preferred embodiment of the present invention;

4 is a schematic structural diagram of a telescopic portion provided by a preferred embodiment of the present invention;

5 is a perspective view of an unlocking portion provided by a preferred embodiment of the present invention;

Fig. 6 is the side view of the unlocking part provided by the preferred embodiment of the present invention;

7 is a partial cross-sectional view of the chair leg support provided by the preferred embodiment of the present invention in a folded state;

8 is a partial cross-sectional view of the chair leg support provided by the preferred embodiment of the present invention in an unfolded state;

9 is a schematic diagram of the operation of the chair leg bracket from folding to unfolding provided by the preferred embodiment of the present invention;

FIG. 10 is a schematic diagram of the operation from unfolding to folding of the chair leg support provided by the preferred embodiment of the present invention.

Detailed ways

A folding chair leg bracket provided by the present invention will be described in detail below with reference to FIGS. 1 to 10 . This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation and specific details. operation process, but the protection scope of the present invention is not limited to the following examples, and those skilled in the art can modify and polish it within the scope of not changing the spirit and content of the present invention.

Please refer to Figure 1 to Figure 8, a folding chair leg bracket, including:

Mounting seat 12;

The chair legs 7, a plurality of the chair legs 7 are respectively arranged on the outer periphery of the mounting seat 12 to rotate at intervals, and the chair legs 7 are provided with a first tooth portion 71;

The linkage portion 3 is movably arranged in the mounting seat 12 , a plurality of second tooth portions 31 are arranged on the outer periphery of the linkage portion 3 , and the first tooth portions 71 of the chair legs 7 respectively pass through the mounting seat 12 . engage with the second tooth portion 31 inside the mounting seat 12 at the same time;

The telescopic part 5 is movably arranged in the linkage part 3 and can extend to the outside of the side surface of the linkage part 3;

The locking portion 14 is fixed on the mounting seat 12, and a locking groove 1401 is defined on the locking portion 14;

The unlocking portion 8 is arranged at the outer end of the linkage portion 3 and is linked with the telescopic portion 5. When the unlocking portion 8 is pressed, the telescopic portion 5 retracts into the linkage portion 3; the unlocking part 8, the telescopic part 5 extends out of the linkage part 3;

When the chair leg bracket is unfolded, the chair leg 7 is rotated, and the first tooth parts 71 of the chair legs 7 are synchronously engaged with the second tooth parts 31 so that the linkage part 3 is relative to the mounting seat 12 . Move until the telescopic part 5 is inserted into the locking groove 1401;

When the chair leg bracket is folded, the unlocking part 8 is pressed, and the telescopic part 5 is disengaged from the locking groove 1401 . At this time, the chair leg 7 can be rotated to the folded state.

In this embodiment, the mounting seat 12 is a hollow structure, and a plurality of communicating grooves 1201 are defined on the outer side of the mounting seat 12 to communicate with the interior thereof. Two connecting walls 1202 are respectively provided on both sides of the communicating groove 1201 . The ends of the chair legs 7 are respectively set between the corresponding two connecting walls 1202 through a rotating shaft 10 , and the first teeth 71 on the chair legs 7 pass through the corresponding communication grooves 1201 It meshes with the second tooth portion 31 of the linkage portion 3 in the mounting seat 12 . In this embodiment, the rotating shaft 10 is arranged laterally, and the chair leg 7 can rotate up and down around the laterally arranged rotating shaft 10 .

The first tooth portion 71 includes a plurality of teeth, the outer circumference of the end portion of the chair leg 7 is a circular arc surface, and a plurality of the teeth are arranged on the circular arc surface.

The second tooth portion 31 includes a plurality of teeth, the linkage portion 3 includes a plurality of outer surfaces, each of the outer surfaces is provided with a plurality of the teeth, and the teeth of the first tooth portion 71 correspond to the corresponding A rack tooth on the outer side is engaged.

In this embodiment, when one chair leg 7 is engaged with the rack teeth corresponding to the outer side of the linkage portion 3, the other chair legs 7 are also engaged with the rack teeth corresponding to the outer side. Therefore, all the chair legs 7 are synchronized. When engaging, the linkage portion 3 moves up and down relative to the mounting seat 12 while the seat leg 7 is rotated.

The locking portion 14 is fixed between the two connecting walls 1202 on one side through the connecting pin 13 and is located at the lower end of the mounting seat 12 . The locking groove 1401 on the locking portion 14 is connected to the mounting seat 12 . internal connection.

An upper cover 1 is fixedly arranged on the upper end of the mounting seat 12, and a hook 101 is arranged on the inner side of the upper cover 1;

In the present embodiment, the linkage portion 3 is a hollow structure, an insertion rod 6 is laterally fixed in the linkage portion 3, and a tension spring 2 is movably arranged in the linkage portion 3, and its two ends are respectively hung on the on the hook 101 and the insertion rod 6 . When the chair leg bracket is unfolded, the tension spring 2 is in a pulling state; when the chair leg bracket is in a folded state, the tension spring 2 is in a natural state.

The telescopic portion 5 is laterally arranged at the lower end of the linkage portion 3, the unlocking portion 8 is vertically movably arranged at the lower end of the linkage portion 3, and the telescopic portion 5 is connected to the upper end of the unlocking portion 8:

In the linkage portion 3, the rear end of the telescopic portion 5 is elastically connected to the rear inner wall of the linkage portion 3 through an elastic member 4, and the elastic member 4 can be an elastic body or a spring. This is not limited. In this embodiment, a spring is preferred, that is, one end of the spring is fixedly connected to the rear inner wall of the linkage portion 3, and the other end is inserted into the installation groove opened at the rear end of the telescopic portion 5; A through hole 32 is defined on the front side wall, and the front end of the telescopic portion 5 can pass through the through hole 32; 14 is located on the same side of the linkage part 3;

The middle part of the telescopic part 5 is provided with a slope 1 501, and the unlocking part 8 is provided with a slope 2 8013 corresponding to the slope 1 501. Press the unlocking part 8, and the unlocking part 8 passes through the slope 1. The relative sliding of 501 and the second slope 8013 moves the telescopic portion 5 in the direction of compressing the elastic member 4 until the telescopic portion 5 retracts into the linkage portion 3 .

Further, the unlocking portion 8 includes an upper end portion 801 and a lower end portion 802 that are fixedly connected, the upper end portion 801 includes a bottom plate 8011 and two side plates 8012, the bottom plate 8011 is fixedly connected to the upper end of the upper end portion 801, and the two The side plates 8012 are respectively located on both sides of the bottom plate 8011, and the second slope 8013 is respectively provided on the corresponding sides of the two bottom plates 8011;

A groove 502 is respectively provided on the two outer sides of the telescopic portion 5 , a slope 501 is provided on one side of the groove 502 , and the upper ends of the two side plates 8012 are respectively movable in the two grooves 502 , and the first slope 501 and the second slope 8013 fit together and can produce relative sliding.

The lower end of the linkage portion 3 is fixedly provided with a lower end cover 9 by a plurality of screws 11, and a mounting hole 901 is defined on the lower end cover 9. The width of the mounting hole 901 is larger than the width of the lower end portion 802 and larger than the bottom plate 8011 , the lower end portion 802 protrudes from the mounting hole 901 to below the mounting hole 901 , and the upper end portion 801 is located above the mounting hole 901 .

The front end of the telescopic part 5 is provided with a slope 3 503 . The slope 3 503 is located on the upper end surface of the telescopic part 5 and slopes downward from the inside to the outside. When the elastic member 4 is in an uncompressed state, the slope 3 503 One end is located inside the linkage part 3 , and the other end is located outside the linkage part 3 .

The present invention does not limit the number of chair legs 7. Taking four chair legs 7 as an example, the mounting seat 12 and the linkage portion 3 are both rectangular frames, and the four chair legs 7 are respectively installed on the four corners of the mounting seat 12. Each side surface, the four side surfaces of the linkage portion 3 are provided with second tooth portions 31 , and a plurality of teeth on the four second tooth portions 31 are connected end to end to form a plurality of gear rings.

The working principle of the present utility model:

When the leg bracket is in the folded state, the lower end of the linkage portion 3 extends to the lower end of the mounting seat 12 , the unlocking portion 8 and the telescopic portion 5 are both located below the mounting seat 12 , and the bottom ends of the chair legs 7 are folded to the bottom of the mounting seat 12 . above;

Referring to FIG. 9 , when the chair leg bracket is folded to unfold, the chair leg 7 is rotated downward, and the first teeth 71 on the chair legs 7 are synchronously engaged with the second teeth 31 of the linkage part 3 , and the linkage part 3 The lower end of the telescopic portion 5 moves into the mounting seat 12, continues to rotate the chair leg 7, the locking portion 14 pushes the front end of the telescopic portion 5 to retract into the linkage portion 3, until the front end of the telescopic portion 5 is inserted into the locking groove 1401 of the locking portion 14, At this time, the locking portion 14 locks the linkage portion 3, so that it can no longer move into the mounting seat 12, and the chair leg 7 cannot be rotated up or down, that is, the chair leg 7 is locked, so that it is in the unfolded state;

Please refer to FIG. 10 , when unfolding to folding the chair leg bracket, press the unlocking part 8 upward, and the front end of the telescopic part 5 is disengaged from the locking groove 1401 of the locking part 14 , at this time, rotate the chair leg upward, several The first tooth portion 71 on the chair leg 7 meshes with the second tooth portion 31 of the linkage portion 3 synchronously, and the lower end of the linkage portion 3 moves out from the mounting seat 12. At this time, release the unlocking portion 8 and continue to rotate the chair leg 7 upward. , until the chair legs 7 are folded above the mounting seat 12 .

The above disclosure is only a specific embodiment of the present application, but the present application is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present application.

Claims (10)

1. A folding chair foot support, characterized in that, comprising: mount; a chair foot, a plurality of the chair feet are respectively arranged on the outer circumference of the mounting seat to rotate at intervals, and the chair foot is provided with a first tooth portion; The linkage portion is movably arranged in the mounting seat, the outer periphery of the linkage portion is provided with a second tooth portion, and the first tooth portions of the chair legs respectively pass through the mounting seat and engage with the second tooth portion ; a telescopic part, which is movably arranged in the linkage part and can be extended to the outside of the side surface of the linkage part; a locking portion fixed on the mounting seat, and a locking groove is provided on the locking portion; The unlocking part is arranged on the linkage part and is linked with the telescopic part. When the unlocking part is pressed, the telescopic part retracts into the linkage part; when the unlocking part is released, the telescopic part extends out. to outside the linkage department; In the unfolded state of the chair leg bracket, the telescopic part is inserted into the locking groove; when the chair leg bracket is in the folded state, the telescopic part is disengaged from the locking groove. 2. A folding chair foot support as claimed in claim 1, characterized in that, a plurality of communication grooves which are respectively communicated with the inside of the mounting seat are provided on the outer side, and two sides of the communication groove are respectively provided with a connecting wall, each An end of the chair leg is respectively rotatably disposed between the corresponding two connecting walls through a rotating shaft, the first tooth portion is fixed on the outer periphery of the end portion, and the first tooth portion passes through the corresponding connection wall. The communication groove of the 2 meshes with the second tooth portion. 3 . The folding chair foot bracket according to claim 2 , wherein the first tooth portion comprises a plurality of teeth, the outer circumference of the end portion of the chair foot is an arc surface, and a plurality of the teeth are arranged on the on the arc surface. 4 . The folding chair leg bracket according to claim 3 , wherein the second tooth portion comprises a plurality of teeth, the linkage portion comprises a plurality of outer sides, and each of the outer sides is respectively provided with a plurality of teeth. 5 . For the rack teeth, a tooth of the first tooth portion meshes with a corresponding rack tooth of the outer side surface. 5 . The folding chair leg bracket according to claim 2 , wherein the locking portion is fixed between two connecting walls of the communication groove, and the locking groove on the locking portion is connected to the mounting portion. 6 . The interior of the seat is communicated; the part of the telescopic part protruding from the linkage part and the locking part are located on the same side of the linkage part. 6. A folding chair foot support according to claim 1, wherein an upper cover is fixedly arranged on the upper end of the mounting seat, and a hook is arranged on the inner side of the upper cover; An insertion rod is fixed in the linkage part, and a tension spring is movably arranged in the linkage part, and its two ends are respectively hung on the hook and the insertion rod. 7 . The folding chair leg bracket according to claim 1 , wherein the telescopic portion is laterally arranged at the lower end of the linkage portion, and the unlocking portion is vertically movably arranged at the lower end of the linkage portion. 8 . and the telescopic part is connected to the upper end of the unlocking part: In the linkage portion, the rear end of the telescopic portion is elastically connected with the rear inner wall of the linkage portion through an elastic member; a through hole is formed on the front side wall of the linkage portion, and the front end of the telescopic portion can pass through. through the through hole; The middle part of the telescopic part is provided with a slope 1, and the unlocking part is provided with a slope 2 corresponding to the slope 1, pressing the unlocking part, the unlocking part is opposite to the slope 2 through the slope 1 The sliding moves the telescopic part in the direction of compressing the elastic member until the telescopic part retracts into the linkage part. 8 . The folding chair leg bracket according to claim 7 , wherein the unlocking portion comprises an upper end portion and a lower end portion that are fixedly connected, and the upper end portion comprises a bottom plate and two side plates, and the bottom plate is connected to the bottom plate. 9 . The upper ends of the upper ends are fixedly connected, the two side plates are respectively located on both sides of the bottom plate, and the two slopes are respectively provided on the corresponding sides of the two bottom plates; Two outer sides of the telescopic part are respectively provided with a groove, one side of the groove is provided with a slope, the upper ends of the two side plates are respectively movable in the grooves, and the slope is a slope. It is in contact with the slope two and can produce relative sliding. 9 . The folding chair foot bracket according to claim 8 , wherein a lower end cover is fixedly arranged at the lower end of the linkage portion, and a mounting hole is defined on the lower end cover, and the width of the mounting hole is larger than that of the mounting hole. 10 . The width of the lower end portion is greater than the width of the bottom plate, the lower end portion extends out of the mounting hole to below the mounting hole, and the upper end portion is located above the mounting hole. 10 . The folding chair leg bracket according to claim 7 , wherein the front end of the telescopic part is provided with a slope 3, and the slope 3 is located on the upper end surface of the telescopic part and slopes downward from the inside to the outside, 11 . When the elastic member is in an uncompressed state, one end of the third slope is located inside the linkage portion, and the other end is located outside the linkage portion.

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