CN210870581U - Folding chair leg support - Google Patents
Folding chair leg support Download PDFInfo
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- CN210870581U CN210870581U CN201922090749.0U CN201922090749U CN210870581U CN 210870581 U CN210870581 U CN 210870581U CN 201922090749 U CN201922090749 U CN 201922090749U CN 210870581 U CN210870581 U CN 210870581U
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- linkage
- slope
- telescopic
- mounting seat
- tooth
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C7/00—Parts, details, or accessories of chairs or stools
- A47C7/002—Chair or stool bases
- A47C7/004—Chair or stool bases for chairs or stools with central column, e.g. office chairs
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Abstract
The utility model relates to a folding chair foot support, include: the chair comprises a mounting seat, chair legs, a linkage part, a telescopic part, a locking part and an unlocking part, wherein the chair legs are respectively arranged on the periphery of the mounting seat in a rotating mode at intervals, and first tooth parts are arranged on the chair legs; the linkage part is movably arranged in the mounting seat, a second tooth part is arranged on the periphery of the linkage part, and the first tooth parts of the plurality of chair legs respectively penetrate through the mounting seat to be meshed with the second tooth part; 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 is provided with a locking groove; the unlocking part is arranged on the linkage part and is linked with the telescopic part; when the chair leg support is in an unfolded state, the telescopic part is inserted into the locking groove; the chair leg support is under fold condition, the pars contractilis with locking groove break away from. The utility model provides a present seat support expand with folding not all convenient technical problem.
Description
Technical Field
The utility model relates to a folding chair, in particular to a folding chair leg support.
Background
The folding chair has the characteristics of easy folding and portability, is not only suitable for outdoor and temporary places, but also is a necessary emergency article for home. The chinese patent office has published the utility model patent with application number 201310466297.6 entitled a folding chair, and this folding chair includes a support block of seat support, chair foot support and swing joint seat support and chair foot support, establishes the jack that supplies each member of seat support and each foot pole of chair foot support to plant on the support block respectively, and the seat support links together with each member of chair foot support through elasticity rope and support block, and the cooperation has the seat support cloth cover on the seat support. When the seat support is unfolded, all rod pieces of the seat support are required to be inserted into all the insertion holes of the supporting block one by one; when the folding seat is carried out, the rod pieces of the seat support frame need to be pulled out from the insertion holes of the supporting block one by one, so that the unfolding and folding of the seat support frame are inconvenient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a folding chair foot support to solve the present seat support expand with folding not all convenient technical problem.
In order to solve the above problem, the utility model provides a folding chair foot support, include:
a mounting seat;
the chair legs are respectively arranged on the periphery of the mounting seat in a rotating mode at intervals, and first tooth parts are arranged on the chair legs;
the linkage part is movably arranged in the mounting seat, a second tooth part is arranged on the periphery of the linkage part, and the first tooth parts of the plurality of chair legs respectively penetrate through the mounting seat to be meshed with the second tooth part;
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 is provided with a locking groove;
the unlocking part is arranged on the linkage part, is linked with the telescopic part and presses the unlocking part, and the telescopic part retracts into the linkage part; the unlocking part is loosened, and the telescopic part extends out of the linkage part;
when the chair leg support is in an unfolded state, the telescopic part is inserted into the locking groove; the chair leg support is under fold condition, the pars contractilis with locking groove break away from.
Preferably, the outer side of the mounting seat is provided with a plurality of communicating grooves respectively communicated with the inside of the mounting seat, two sides of each communicating groove are respectively provided with a connecting wall, the end part of each chair leg is respectively rotatably arranged between the two corresponding connecting walls through a rotating shaft, the first tooth part is fixedly arranged on the periphery of the end part, and the first tooth part penetrates through the corresponding communicating groove to be meshed with the second tooth part.
Preferably, the first tooth portion comprises a plurality of teeth, the periphery of the end portion of the chair leg is an arc surface, and the plurality of teeth are arranged on the arc surface.
Preferably, the second tooth portion includes a plurality of rack teeth, the linkage portion includes a plurality of outer side surfaces, each of the outer side surfaces is provided with a plurality of rack teeth, and a tooth of one of the first tooth portions is engaged with a rack tooth of a corresponding one of the outer side surfaces.
Preferably, the locking portion is fixed between two connecting walls of the communicating groove, and the locking groove on the locking portion is communicated with the inside of the mounting seat; the portion of the telescopic portion extending from the interlocking portion is located on the same side of the interlocking portion as the locking portion.
Preferably, the upper end of the mounting seat is fixedly provided with an upper cover, and the inner side of the upper cover is provided with a hook;
an inserted bar is fixedly arranged in the linkage part, a tension spring is movably arranged in the linkage part, and two ends of the tension spring are respectively hung on the hook and the inserted bar.
Preferably, the telescopic part is transversely arranged at the lower end of the linkage part, the unlocking part is vertically movably arranged at the lower end of the linkage part, and the telescopic part is connected to the upper end of the unlocking part:
in the linkage part, the rear end of the telescopic part is elastically connected with the inner wall of the rear side of the linkage part through an elastic piece; a through hole is formed in the front side wall of the linkage part, and the front end of the telescopic part can penetrate through the through hole;
the middle part of the telescopic part is provided with a slope I, the unlocking part is provided with a slope II corresponding to the slope I, the unlocking part is pressed, and the unlocking part is used for moving the telescopic part towards the direction of compressing the elastic piece through the relative sliding of the slope I and the slope II until the telescopic part retracts into the linkage part.
Preferably, the unlocking part comprises an upper end part and a lower end part which are fixedly connected, the upper end part comprises a bottom plate and two side plates, the bottom plate is fixedly connected with the upper end of the upper end part, the two side plates are respectively positioned on two sides of the bottom plate, and the corresponding sides of the two bottom plates are respectively provided with a second slope;
two outer side surfaces of the telescopic portion are respectively provided with a groove, one side of each groove is provided with a first slope, the upper ends of the two side plates are respectively movable in the two grooves, and the first slope and the second slope are attached and can slide relatively.
Preferably, a lower end cover is fixedly arranged at the lower end of the linkage part, a mounting hole is formed in the lower end cover, the width of the mounting hole is greater than that of the lower end part and is greater than that of the bottom plate, the lower end part extends out of the mounting hole to the position below the mounting hole, and the upper end part is located above the mounting hole.
Preferably, the front end of the telescopic part is provided with a slope three, the slope three is positioned on the upper end face of the telescopic part and inclines downwards from inside to outside, one end of the slope three is positioned in the linkage part, and the other end of the slope three is positioned outside the linkage part when the elastic part is in an uncompressed state.
Compared with the prior art, the utility model discloses there are following technological effect:
the utility model provides a folding chair foot support, a plurality of chair feet can be folding in step and expand, have simplified the operating procedure, operate not only simple and convenient, labour saving and time saving again promptly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts. In the drawings:
fig. 1 is an exploded view of a folding chair leg support according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural diagram of a mounting seat according to a preferred embodiment of the present invention;
fig. 3 is a side view of a locking portion provided in a preferred embodiment of the present invention;
fig. 4 is a schematic structural diagram of the telescopic portion according to the preferred embodiment of the present invention;
fig. 5 is a perspective view of an unlocking part according to a preferred embodiment of the present invention;
fig. 6 is a side view of an unlocking portion provided in a preferred embodiment of the present invention;
FIG. 7 is a partial cross-sectional view of a chair leg support in a folded position in accordance with a preferred embodiment of the present invention;
FIG. 8 is a partial cross-sectional view of a chair leg support in an extended position in accordance with a preferred embodiment of the present invention;
FIG. 9 is a schematic view of the chair leg support from folded to unfolded operation according to the preferred embodiment of the present invention;
fig. 10 is an operation diagram of the chair leg support from unfolding to folding according to the preferred embodiment of the present invention.
Detailed Description
The present invention provides a foldable chair leg support, which will be described in detail with reference to fig. 1 to 10, and the present embodiment is implemented on the premise of the technical solution of the present invention, and provides detailed embodiments and specific operation procedures, but the present invention is not limited to the following embodiments, and those skilled in the art can modify and color the present invention without changing the spirit and content of the present invention.
Referring to fig. 1 to 8, a foldable chair leg support includes:
a mounting base 12;
the chair legs 7 are respectively arranged on the periphery of the mounting seat 12 in a rotating mode at intervals, and a first tooth part 71 is arranged on each chair leg 7;
the linkage part 3 is movably arranged in the mounting seat 12, a plurality of second tooth parts 31 are arranged on the periphery of the linkage part 3, and the first tooth parts 71 of the plurality of chair legs 7 respectively penetrate through the mounting seat 12 and are simultaneously meshed with the second tooth parts 31 in the mounting seat 12;
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;
a locking part 14 fixed on the mounting seat 12, wherein a locking groove 1401 is formed on the locking part 14;
an unlocking portion 8 provided at an outer end portion of the interlocking portion 3, and configured to be interlocked with the extensible portion 5, and configured to press the unlocking portion 8, so that the extensible portion 5 is retracted into the interlocking portion 3; the unlocking part 8 is loosened, and the telescopic part 5 extends out of the linkage part 3;
when the chair leg bracket is unfolded, the chair legs 7 are rotated, the first tooth parts 71 of a plurality of chair legs 7 are synchronously meshed with the second tooth parts 31, so that the linkage part 3 moves relative to the mounting seat 12 until the telescopic part 5 is inserted into the locking groove 1401;
when the leg support is folded, the unlocking portion 8 is pressed, the extendable portion 5 is disengaged from the locking groove 1401, and at this time, the leg 7 is rotated to a folded state.
In this embodiment, the mounting seat 12 is a hollow structure, a plurality of communicating grooves 1201 communicating with the inside of the mounting seat 12 are formed on the outside of the mounting seat 12, a connecting wall 1202 is respectively disposed on both sides of the communicating grooves 1201, the end of each chair leg 7 is rotatably disposed between the two corresponding connecting walls 1202 through a rotating shaft 10, and the first tooth portion 71 on the chair leg 7 passes through the corresponding communicating groove 1201 and is engaged with the second tooth portion 31 of the linkage portion 3 in the mounting seat 12. In this embodiment, the rotation shaft 10 is disposed horizontally, and the chair leg 7 can rotate up and down around the rotation shaft 10 disposed horizontally.
The first tooth portion 71 includes a plurality of teeth, the outer periphery of the end portion of the chair leg 7 is an arc surface, and the plurality of teeth are disposed on the arc surface.
The second tooth portion 31 includes a plurality of rack teeth, the linkage portion 3 includes a plurality of outer side surfaces, each of the outer side surfaces is provided with a plurality of rack teeth, and the teeth of one of the first tooth portions 71 are engaged with the rack teeth of the corresponding one of the outer side surfaces.
In the present embodiment, when one leg 7 is engaged with the rack gear on the corresponding outer side surface of the interlocking section 3, the other legs 7 are also engaged with the rack gear on the corresponding outer side surface, and therefore, all the legs 7 are engaged in synchronization, and the interlocking section 3 moves up and down with respect to the mounting seat 12 while the legs 7 rotate.
The locking part 14 is fixed between two connecting walls 1202 on one side surface through a connecting pin shaft 13 and is positioned at the lower end of the mounting seat 12, and a locking groove 1401 on the locking part 14 is communicated with the inside of the mounting seat 12.
An upper cover 1 is fixedly arranged at the upper end of the mounting seat 12, and a hook 101 is arranged on the inner side of the upper cover 1;
in this embodiment, the linkage portion 3 is a hollow structure, an insertion rod 6 is transversely and fixedly arranged in the linkage portion 3, a tension spring 2 is movably arranged in the linkage portion 3, and two ends of the tension spring are respectively hung on the hook 101 and the insertion rod 6. The chair leg bracket is in an unfolding state, and the tension spring 2 is in a pulling-up state; the chair leg support is in a folded state, and the tension spring 2 is in a natural state.
The pars contractilis 5 transversely set up in the lower extreme of linkage portion 3, the vertical activity of unblock portion 8 set up in the lower extreme of linkage portion 3, just pars contractilis 5 connect in the upper end of unblock portion 8:
in the linkage part 3, the rear end of the telescopic part 5 is elastically connected with the rear inner wall of the linkage part 3 through an elastic piece 4, the elastic piece 4 can be an elastic body or a spring, and the like, the utility model discloses do not limit this, the spring is preferably selected in this embodiment, namely, one end of the spring is fixedly connected with the rear inner wall of the linkage part 3, and the other end is inserted into a mounting groove formed at the rear end of the telescopic part 5; a through hole 32 is formed in the front side wall of the linkage part 3, and the front end of the telescopic part 5 can penetrate through the through hole 32; in the present embodiment, when the front end of the telescopic part 5 extends to the through hole 32, it is located on the same side of the interlocking part 3 as the locking part 14;
the middle of the telescopic part 5 is provided with a slope I501, the unlocking part 8 is provided with a slope II 8013 corresponding to the slope I501, the unlocking part 8 is pressed, and the unlocking part 8 moves the telescopic part 5 in the direction of compressing the elastic piece 4 through the relative sliding of the slope I501 and the slope II 8013 until the telescopic part 5 retracts into the linkage part 3.
Further, the unlocking portion 8 includes an upper end portion 801 and a lower end portion 802 which 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 with the upper end of the upper end portion 801, the two side plates 8012 are respectively located at two sides of the bottom plate 8011, and two slope portions 8013 are respectively arranged at corresponding sides of the two bottom plates 8011;
two outer side surfaces of the telescopic part 5 are respectively provided with a groove 502, one side of the groove 502 is provided with the first slope 501, the upper ends of the two side plates 8012 are respectively movable in the two grooves 502, and the first slope 501 is attached to the second slope 8013 and can slide relatively.
A lower end cover 9 is fixedly arranged at the lower end of the linkage part 3 through a plurality of screws 11, a mounting hole 901 is formed in the lower end cover 9, the width of the mounting hole 901 is larger than that of the lower end part 802 and larger than that of the bottom plate 8011, the lower end part 802 extends out of the mounting hole 901 to the lower part of the mounting hole 901, and the upper end part 801 is located above the mounting hole 901.
The front end of the telescopic part 5 is provided with a slope three 503, the slope three 503 is positioned on the upper end face of the telescopic part 5 and inclines downwards from inside to outside, one end of the slope three 503 is positioned in the linkage part 3, and the other end of the slope three 503 is positioned outside the linkage part 3 when the elastic part 4 is in an uncompressed state.
The utility model discloses do not do the restriction to the number of chair foot 7 to four chair feet 7 are the example, then mount pad 12 and linkage portion 3 are the rectangle frame, and four sides at mount pad 12 are installed respectively to these four chair feet 7, and four sides of linkage portion 3 all are equipped with second tooth portion 31, and a plurality of teeth end to end on four second tooth portions 31 forms a plurality of ring gears.
The utility model discloses a theory of operation:
when the chair leg support is in a folded state, the lower end of the linkage part 3 extends to the lower end of the mounting seat 12, the unlocking part 8 and the telescopic part 5 are both positioned below the mounting seat 12, and the bottom ends of the plurality of chair legs 7 are folded above the mounting seat 12;
referring to fig. 9, when the leg support is folded to unfolded, the legs 7 are rotated downward, the first teeth 71 of the legs 7 are synchronously engaged with the second teeth 31 of the linking part 3, the lower end of the linking part 3 moves into the mounting seat 12, the legs 7 are continuously rotated, the locking part 14 pushes the front end of the telescopic part 5 to retract into the linking part 3 until the front end of the telescopic part 5 is inserted into the locking groove 1401 of the locking part 14, at this time, the locking part 14 locks the linking part 3 so that it can not move into the mounting seat 12 any more, and the legs 7 can not be rotated upward or downward, that is, the legs 7 are locked to be unfolded;
referring to fig. 10, when the leg support is unfolded and folded, the unlocking portion 8 is pressed upward, the front end of the telescopic portion 5 is disengaged from the locking groove 1401 of the locking portion 14, at this time, the legs are rotated upward, the first teeth 71 of the legs 7 are synchronously engaged with the second teeth 31 of the linking portion 3, the lower end of the linking portion 3 is removed from the mounting seat 12, and at this time, the unlocking portion 8 is released and the legs 7 are continuously rotated upward until the legs 7 are folded above the mounting seat 12.
The disclosure above is only one specific embodiment of the present application, but the present application is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present application.
Claims (10)
1. A folding chair leg support, comprising:
a mounting seat;
the chair legs are respectively arranged on the periphery of the mounting seat in a rotating mode at intervals, and first tooth parts are arranged on the chair legs;
the linkage part is movably arranged in the mounting seat, a second tooth part is arranged on the periphery of the linkage part, and the first tooth parts of the plurality of chair legs respectively penetrate through the mounting seat to be meshed with the second tooth part;
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 is provided with a locking groove;
the unlocking part is arranged on the linkage part, is linked with the telescopic part and presses the unlocking part, and the telescopic part retracts into the linkage part; the unlocking part is loosened, and the telescopic part extends out of the linkage part;
when the chair leg support is in an unfolded state, the telescopic part is inserted into the locking groove; the chair leg support is under fold condition, the pars contractilis with locking groove break away from.
2. The leg support of claim 1, wherein the mounting base has a plurality of communicating grooves formed on an outer side thereof, the communicating grooves respectively communicating with an interior of the mounting base, the communicating grooves are respectively provided with a connecting wall on both sides thereof, an end portion of each leg is rotatably disposed between two corresponding connecting walls through a rotating shaft, the first tooth portion is fixedly disposed on an outer circumference of the end portion, and the first tooth portion is engaged with the second tooth portion through the corresponding communicating groove.
3. The support of claim 2, wherein the first tooth portion comprises a plurality of teeth, the outer periphery of the end portion of the chair leg is a circular arc surface, and the plurality of teeth are disposed on the circular arc surface.
4. The leg rest of claim 3, wherein the second tooth portion includes a plurality of teeth, the linkage portion includes a plurality of outer side surfaces, each of the outer side surfaces has a plurality of teeth, and the teeth of one of the first tooth portions are engaged with the teeth of a corresponding one of the outer side surfaces.
5. A folding chair leg support as claimed in claim 2, wherein said locking portion is fixed between two connecting walls of said communicating groove, and said locking groove of said locking portion communicates with the inside of said mounting seat; the portion of the telescopic portion extending from the interlocking portion is located on the same side of the interlocking portion as the locking portion.
6. The support of claim 1, wherein an upper cover is fixedly arranged at the upper end of the mounting seat, and a hook is arranged at the inner side of the upper cover;
an inserted bar is fixedly arranged in the linkage part, a tension spring is movably arranged in the linkage part, and two ends of the tension spring are respectively hung on the hook and the inserted bar.
7. The support of claim 1, wherein the retractable portion is transversely disposed at a lower end of the linkage portion, the unlocking portion is vertically movably disposed at a lower end of the linkage portion, and the retractable portion is connected to an upper end of the unlocking portion:
in the linkage part, the rear end of the telescopic part is elastically connected with the inner wall of the rear side of the linkage part through an elastic piece; a through hole is formed in the front side wall of the linkage part, and the front end of the telescopic part can penetrate through the through hole;
the middle part of the telescopic part is provided with a slope I, the unlocking part is provided with a slope II corresponding to the slope I, the unlocking part is pressed, and the unlocking part is used for moving the telescopic part towards the direction of compressing the elastic piece through the relative sliding of the slope I and the slope II until the telescopic part retracts into the linkage part.
8. The leg support of claim 7, wherein the unlocking portion comprises an upper end portion and a lower end portion which are fixedly connected, the upper end portion comprises a bottom plate and two side plates, the bottom plate is fixedly connected with the upper end of the upper end portion, the two side plates are respectively located on two sides of the bottom plate, and the two slopes II are respectively arranged on corresponding sides of the two bottom plates;
two outer side surfaces of the telescopic portion are respectively provided with a groove, one side of each groove is provided with a first slope, the upper ends of the two side plates are respectively movable in the two grooves, and the first slope and the second slope are attached and can slide relatively.
9. The leg support of claim 8, wherein a lower end cap is fixedly disposed at a lower end of the linkage portion, the lower end cap defines a mounting hole, the width of the mounting hole is greater than the width of the lower end portion and greater than the width of the bottom plate, the lower end portion extends out of the mounting hole to a position below the mounting hole, and the upper end portion is disposed above the mounting hole.
10. The leg support according to claim 7, wherein a third slope is provided at the front end of the extendable portion, the third slope is located at the upper end surface of the extendable portion and is inclined downward from inside to outside, and 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 of the third slope is located outside the linkage portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922090749.0U CN210870581U (en) | 2019-11-28 | 2019-11-28 | Folding chair leg support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922090749.0U CN210870581U (en) | 2019-11-28 | 2019-11-28 | Folding chair leg support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210870581U true CN210870581U (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922090749.0U Active CN210870581U (en) | 2019-11-28 | 2019-11-28 | Folding chair leg support |
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| Country | Link |
|---|---|
| CN (1) | CN210870581U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11700943B1 (en) * | 2023-01-13 | 2023-07-18 | Shenzhen Chuangboyou Technology Development Co., LTD | Foldable chair |
| US20230232978A1 (en) * | 2022-01-24 | 2023-07-27 | Dahai Xu | Folding frame and outdoor table or outdoor chair using the folding frame |
-
2019
- 2019-11-28 CN CN201922090749.0U patent/CN210870581U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230232978A1 (en) * | 2022-01-24 | 2023-07-27 | Dahai Xu | Folding frame and outdoor table or outdoor chair using the folding frame |
| US11700943B1 (en) * | 2023-01-13 | 2023-07-18 | Shenzhen Chuangboyou Technology Development Co., LTD | Foldable chair |
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