Foot rest turnover mechanism for seat and seat

Abstract

The utility model provides a footrest turnover mechanism for a seat and the seat, the footrest turnover mechanism comprises a footrest assembly, a rotary connecting assembly and a turnover control assembly, the footrest assembly comprises a guide rod and a footrest plate, the rotary connecting assembly comprises a first rotary seat and a supporting seat, and the turnover control assembly comprises a positioning pin with an elastic reset function and a control piece; the state of the rotary connecting assembly is controlled by pressing and releasing the control piece, so that the footrest can be positioned and overturned; the whole footrest turnover mechanism is few in components, simple in structure and operation mode, high in safety and low in cost, and the operation and use experience feeling of the footrest mechanism is improved; the footrest turnover mechanism is connected below the seat in a sliding manner along the front-back direction, so that the whole seat is more concise and attractive in appearance.

Description

Technical Field

[0001] The utility model relates to the field of seats, in particular to a footrest flipping mechanism for seats and the seat. Background Art

[0002] Existing office chairs or ergonomic chairs are all provided with a pull-out footrest mechanism for resting feet during rest. The footrest board on the existing footrest mechanism can be flipped forward to be opened for use, and can be flipped backward to be stored after use.

[0003] For example, in the patent of the footrest flip locking mechanism with announcement number CN212698251U, the footrest formed by the upper cover and the lower cover relies on a support shaft to provide rotation support, and a fixed gear cylinder and a movable gear cylinder are sleeved on the support shaft. The fixed gear cylinder is connected to the footrest by a connecting seat. During operation, the movable gear cylinder can be acted on the push rod on the push-pull control switch to make the movable gear cylinder and the fixed gear cylinder engage or separate, thereby switching the footrest between a locked state and a flipped state. However, such a design has defects.

[0004] A movable gear cylinder, a fixed gear cylinder, and a sleeve are passed through the support shaft. The sleeve is also connected to a control switch. The control switch includes a U-shaped rotating seat, a push rod connected to the rotating seat, and an extrusion block. The sleeve needs to be passed through the support shaft, and a column is set on the sleeve as the rotating point of the rotating seat. This design occupies a large lateral space inside the footrest, and the component structure is also relatively complex, resulting in high cost.

[0005] The push rod is exposed outside the footrest, which makes the appearance of the entire footrest flipping mechanism less concise. Applying the footrest flipping mechanism to a seat will make the appearance of the seat look more abrupt.

[0006] In order to facilitate the left and right swing of the exposed push rod, an avoidance opening needs to be set on the footrest. When pulling the push rod, the hand can be accidentally pinched at the opening position, causing a safety hazard.

[0007] Based on the above problems, it is necessary to design a footrest flipping mechanism for a seat, which should meet the requirements of simple structure, reasonable occupied space, low cost, safe operation and simple appearance. Summary of the invention

[0008] In order to solve the above-mentioned technical problems, the purpose of the utility model is to provide a footrest flipping mechanism for a seat, which can realize the positioning and flipping of the footrest by pressing and releasing the control part to control the state of the rotating connecting assembly; the whole footrest flipping mechanism has few parts, simple structure and operation, high safety, low cost, and improves the operation and use experience of the footrest mechanism.

[0009] Furthermore, a chair is provided, in which the footrest flipping mechanism is slidably connected under the seat in the front-rear direction, so that the entire chair has a more concise and beautiful appearance.

[0010] The technical solution of the utility model is achieved in this way:

[0011] A footrest flipping mechanism for a seat, comprising:

[0012] A footrest assembly, comprising a guide rod and a footrest plate;

[0013] The rotating connection assembly comprises a first rotating seat and a supporting seat, the supporting seat is connected to one end of the guide rod, the first rotating seat is integrally formed at the outer edge of the footrest, a rotating shaft is passed through the first rotating seat and the supporting seat, so that the first rotating seat can rotate relative to the supporting seat along the axial direction of the rotating shaft; the first rotating seat is provided with two positioning holes that penetrate the first rotating seat, and the axial direction of the positioning holes is the same as the axial direction of the rotating shaft; a limiting hole that is the same as the axial direction of the positioning hole is opened at one end of the supporting seat facing the first rotating seat, and the limiting hole does not penetrate the first rotating seat; and when the first rotating seat rotates, the limiting hole is located on the rotation trajectory of the positioning hole;

[0014] The flip control assembly comprises a positioning pin with elastic reset function and a control member; the positioning pin is installed in the limit hole; the control member has two plug posts, and the plug posts are inserted into the corresponding positioning holes along the outer side of the first rotating seat;

[0015] The footrest flipping mechanism has a positioning state and a flipping state. When the footrest flipping mechanism is in the positioning state, the positioning pin is inserted into one of the positioning holes; when the footrest flipping mechanism switches from the positioning state to the flipping state, the control member is pressed to make the corresponding plug push the positioning pin out of the positioning hole, and the first rotating seat rotates to make the corresponding positioning hole and the positioning pin staggered. At this time, the external force is removed and the control member can be elastically reset; when the first rotating seat rotates to make the positioning pin correspond to the other positioning hole, the positioning pin is elastically reset and inserted into the other positioning hole, and the footrest flipping mechanism switches to the positioning state again.

[0016] Preferably, it also includes a second rotating seat formed on the outer edge of the footrest, the second rotating seat is spaced to the left and right of the first rotating seat, and the rotating shaft is simultaneously passed through the first rotating seat, the second rotating seat and the supporting seat; so that both sides of the footrest can be rotatably connected to the supporting seat, thereby improving the stability of the footrest.

[0017] Preferably, a protective cover is connected to the outer end of the second rotating seat; the protective cover can block the end of the second rotating seat to prevent debris from entering.

[0018] Preferably, a first spring is installed in the limiting hole, one end of the first spring abuts against the bottom wall of the limiting hole, and the other end of the first spring acts on the positioning pin, thereby providing a reset elastic force for the positioning pin.

[0019] Preferably, a second spring is provided between the first rotating seat and the control member to provide a restoring elastic force for the control member.

[0020] Preferably, the control member has a through hole, a column is provided on the first rotating seat, the second spring is sleeved on the column and acts on the control member; the top end of the column passes through the through hole, and the top end of the column is threadedly connected with a limit screw that limits the control member from escaping; the limit screw can limit the control member from escaping from the first rotating seat after elastic reset.

[0021] Preferably, the control member includes a pressing cover and a control body, and the outer end surface of the control body is recessed inward, so that the control body becomes a shell structure with an outer side open and an inner side closed, and the pressing cover is connected to the outer opening of the control body; the control body with a shell structure has a lower cost, and the pressing cover blocks the outer side of the control body to prevent debris from entering, while providing a structure that is easy for the user to press.

[0022] Preferably, a connecting rod is provided in the control body of the shell structure, a clamping hole is provided at the top of the connecting rod, a clamping column is provided on the pressing cover, and the clamping column is inserted into the clamping hole to form an interference fit, so that the connection effect between the pressing cover and the control body is tighter.

[0023] Preferably, the plug post is integrally formed on the control component; the integrally formed structure has high strength, eliminates the connection process between the plug post and the control component, and improves installation efficiency.

[0024] A chair comprises a seat and the footrest flipping mechanism, wherein a guide rod of the footrest flipping mechanism is slidably connected under the seat along the front-rear direction.

[0025] The beneficial effects of the utility model using the above technical solution are:

[0026] The utility model provides a footrest flipping mechanism for a seat and a seat, which, compared with the prior art:

[0027] 1. Compared with the footrest mechanism in the background technology, the footrest flipping mechanism in the utility model controls the state of the footrest through an elastically resettable positioning pin and a control member. The entire footrest flipping mechanism has fewer parts, occupies a smaller volume, has a simple structure and operation method, and has a lower cost.

[0028] 2. Compared with the control method of pulling the push rod in the background technology, the control member connected to the end of the first rotating seat realizes the control of the flipping and positioning state of the footrest by pressing, and there is no need to open an opening on the footrest to avoid the push rod, so there is no safety hazard.

[0029] 3. Compared with the push rod exposed on the footrest in the background technology, the control part on the footrest flipping mechanism is set at the end of the first rotating seat, which does not look abrupt in appearance. Therefore, after the footrest flipping mechanism is applied to the seat, it will not affect the appearance of the seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the footrest flipping mechanism;

[0031] Figure 2 This is an exploded view of the footrest flipping mechanism;

[0032] Figure 3 This is an exploded view of the footrest flipping mechanism from another angle;

[0033] Figure 4 It is a cross-sectional view of the positions of two positioning holes on the footrest flipping mechanism;

[0034] Figure 5 It is a cross-sectional view of the two upright posts on the footrest flipping mechanism;

[0035] Figure 6 It is a schematic diagram of the structure of the footrest flipping mechanism installed on the seat;

[0036] The figures are marked as follows: 1-guide rod, 2-support seat, 4-footrest, 5-control part, 6-positioning pin, 7-first spring, 8-rotating shaft, 9-protective cover, 10-seat, 31-first rotating seat, 32-second rotating seat, 33-center hole, 34-clamping hole, 51-control body, 52-pressing cover, 53-limiting screw, 54-second spring, 311-column, 312-inner screw hole, 313-positioning hole, 511-through hole, 512-insertion column, 513-connecting column, 91-clamping column. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0038] In the description of the present invention, the term "at least one" refers to one or more than one, unless otherwise clearly defined. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0040] The specific implementation of the utility model is as follows:

[0041] like Figure 1-6 As shown, the utility model provides a footrest flipping mechanism for a seat, comprising:

[0042] A footrest assembly, comprising a guide rod 1 and a footrest plate 4;

[0043] The rotatable connection assembly includes a first rotating seat 31 and a supporting seat 2. The supporting seat 2 is connected to one end of the guide rod 1. The first rotating seat 31 is integrally formed at the outer edge of the footrest 4. A rotating shaft 8 is passed through the first rotating seat 31 and the supporting seat 2, so that the first rotating seat 31 can rotate relative to the supporting seat 2 along the axial direction of the rotating shaft 8; the first rotating seat 31 is provided with two positioning holes 313 that penetrate the first rotating seat 31, and the axial direction of the positioning holes 313 is the same as the axial direction of the rotating shaft 8; the support seat 2 is provided with a limiting hole 21 that is the same as the axial direction of the positioning hole 313 at one end facing the first rotating seat 31, and the limiting hole 21 does not penetrate the first rotating seat 31; and when the first rotating seat 31 rotates, the positioning hole 313 will rotate accordingly and generate a corresponding rotation trajectory, which is usually arc-shaped, and the two positioning holes 313 are on the same arc-shaped rotation trajectory; and the limiting hole 21 is located on the rotation trajectory of the positioning hole 313;

[0044] The flip control assembly includes a positioning pin 6 with an elastic reset function and a control member 5; the positioning pin 6 is installed in the limit hole 21; the control member 5 has two plug posts 512, the plug posts 512 are connected to the end surface of the inner side of the control body 51 facing the first rotating seat 3, and the plug posts 512 are inserted into the corresponding positioning holes 313 along the outer side of the first rotating seat 312; the outer side refers to the side of the first rotating seat 3 facing away from the support seat 2;

[0045] The footrest flipping mechanism has a positioning state and a flipping state. When the footrest flipping mechanism is in the positioning state, the positioning pin 6 is stuck in one of the positioning holes 313; when the footrest flipping mechanism switches from the positioning state to the flipping state, the control component 5 is pressed at this time, so that the corresponding plug column 512 pushes the positioning pin 6 out of the positioning hole 313, and the first rotating seat 31 rotates and makes the corresponding positioning hole 313 staggered with the positioning pin 6. After the staggered state, the positioning pin 6 will rest on the end face on the inner side of the first rotating seat 31. At this time, the external force is removed and the control component 5 can be elastically reset; when the first rotating seat 31 rotates and makes the positioning pin 6 correspond to the other positioning hole 313, the positioning pin 6 is elastically reset and stuck in the other positioning hole 313, and the footrest flipping mechanism switches to the positioning state again.

[0046] Further, if Figure 1-4 As shown, in order to make the footrest 4 more stable when flipped or fixed, the footrest flipping mechanism also includes a second rotating seat 32 formed on the outer edge of the footrest 4, the second rotating seat 32 is spaced left and right from the first rotating seat 31, and the second rotating seat 32 is spaced left and right from the first rotating seat 3 and forms an avoidance area, and the support seat 2 is located in the avoidance area; a center hole 33 is provided on the first rotating seat and the second rotating seat, and the rotating shaft 8 passes through the center hole 33 at the same time, and is penetrated on the first rotating seat 31, the second rotating seat 32, and the support seat 2; so that the left and right sides of the footrest 4 can be rotatably connected to the support seat 2, so that the left and right sides of the footrest 4 can be stably supported, thereby improving the stability of the footrest 4.

[0047] Furthermore, the elastic reset function of the positioning pin 6 is achieved as follows: a first spring 7 is installed in the limiting hole 21, one end of the first spring 7 is against the bottom wall of the limiting hole 21, and the other end of the first spring 7 acts on the positioning pin 6, thereby providing a reset elastic force for the positioning pin 6.

[0048] Furthermore, the elastic reset function of the control member 5 is achieved as follows: Figure 5 As shown, a second spring 54 is provided between the first rotating seat 31 and the control member 5 to provide a restoring elastic force for the control member 5, wherein the end surface of the first rotating seat 31 facing the control member 5 is recessed inward to form an area for the control member 5 to move, and the second spring 54 is arranged in this area. When an external force acts on the control member 5 or the external force is removed, the control member 5 elastically expands or retracts in this area.

[0049] Furthermore, in order to prevent the control member 5 from falling out of the first rotating seat 31 when resetting, the control member 5 is provided with a through hole 511, the first rotating seat 31 is provided with a column 311, the second spring 54 is sleeved on the column 311 and acts on the control member 5; the top end of the column 311 passes through the through hole 511, and the top end of the column 311 is threadedly connected with a limit screw 53 for limiting the control member 5 from falling out; specifically, the top end of the column 311 is provided with an inner screw hole 312, and the limit screw 53 is threadedly connected in the inner screw hole 312; the limit screw 53 can limit the control member 5 from falling out of the first rotating seat 31 after elastic resetting, so that the control member 5 can be operated more stably.

[0050] Furthermore, the control component 5 includes a pressing cover 52 and a control body 51. The outer end surface of the control body 51 is recessed inward, so that the control body 51 becomes a shell structure with an outer side open and an inner side closed. The pressing cover 52 is connected to the outer opening of the control body 51; the plug 512 is connected to the outer end surface of the inner side closed of the control body 51; the control body 51 with a shell structure has lower cost and thinner structure, and the pressing cover 51 not only blocks the outer side of the control body 51 to prevent debris from entering, but also provides a structure that is easy to press for the user, killing two birds with one stone and having a clever design.

[0051] Furthermore, the through hole 511 is arranged on the closed upper end surface inside the control body 51, and the limit screw 53 is inserted into the through hole 511 and screwed into the inner screw hole 312, so that the control body 51 of the shell structure blocks the head of the limit screw 53 inside, making the control part 5 look simpler in appearance.

[0052] Furthermore, in order to make the connection between the pressing cover 52 and the control body 51 more stable, a connecting rod 513 is provided in the control body 51 of the shell structure, and a clamping hole 34 is provided at the top of the connecting rod 513. A clamping column 91 is provided on the pressing cover 52, and the clamping column 91 is inserted into the clamping hole 34 to form an interference fit, so that the connection effect between the pressing cover 52 and the control body 51 is tighter.

[0053] Furthermore, a protective cover 9 is connected to the outer end of the second rotating seat 32; the protective cover 9 can block the end of the second rotating seat 32 to prevent debris from entering; a clamping column 91 is also provided on the protective cover, and a clamping hole 34 is also provided on the end surface of the second rotating seat 32 facing the protective cover. The clamping column 91 is inserted into the clamping hole 34 and forms an interference fit, so that the protective cover 9 is connected to the outer end surface of the second rotating seat 32.

[0054] Furthermore, the plug post 512 is integrally formed on the control member 5; in detail, the plug post is integrally formed on the control body 51, and the integrally formed structure has high strength, which eliminates the connection process between the plug post 512 and the control member 5, thereby improving the installation efficiency.

[0055] like Figure 6As shown, a chair is provided, including a seat 10 and the footrest flipping mechanism, wherein the guide rod 1 of the footrest flipping mechanism is slidably connected to the bottom of the seat 10 along the front-rear direction. When the user needs to rest his feet, the footrest flipping mechanism can be pulled out forward and the pressing cover 51 can be pressed to allow the footrest 4 to flip forward and open. When it is necessary to sit normally, the pressing cover 51 can be pressed again to allow the footrest 4 to flip backward and retract, and then the footrest flipping mechanism can be stored under the seat 10.

[0056] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A footrest flip mechanism for a seat, characterized in that: include: A footrest assembly, comprising a guide rod (1) and a footrest plate (4); The rotating connection assembly comprises a first rotating seat (31) and a supporting seat (2), wherein the supporting seat (2) is connected to one end of the guide rod (1), the first rotating seat (31) is integrally formed at the outer edge of the footrest (4), a rotating shaft (8) is provided between the first rotating seat (31) and the supporting seat (2), so that the first rotating seat (31) can rotate relative to the supporting seat (2) along the axial direction of the rotating shaft (8); the first rotating seat (31) is provided with two positioning holes (313) penetrating the first rotating seat (31), and the axial direction of the positioning holes (313) is the same as the axial direction of the rotating shaft (8); a limiting hole (21) is provided at one end of the supporting seat (2) facing the first rotating seat (31) and the axial direction is the same as the axial direction of the positioning hole (313), and the limiting hole (21) does not penetrate the first rotating seat (31); and when the first rotating seat (31) rotates, the limiting hole (21) is located on the rotation trajectory of the positioning hole (313); A flip control assembly comprises a positioning pin (6) with an elastic reset function and a control member (5); the positioning pin (6) is installed in a limiting hole (21); the control member (5) has two insertion posts (512), and the insertion posts (512) are inserted into corresponding positioning holes (313) along the outer side of the first rotating seat (312); The footrest flipping mechanism has a positioning state and a flipping state. When the footrest flipping mechanism is in the positioning state, the positioning pin (6) is inserted into one of the positioning holes (313). When the footrest flipping mechanism switches from the positioning state to the flipping state, the control member (5) is pressed to cause the corresponding plug column (512) to push the positioning pin (6) out of the positioning hole (313), and the first rotating seat (31) rotates to cause the corresponding positioning hole (313) to be offset from the positioning pin (6). At this time, the external force is removed and the control member (5) can be elastically reset. When the first rotating seat (31) rotates to cause the positioning pin (6) to correspond to the other positioning hole (313), the positioning pin (6) is elastically reset and inserted into the other positioning hole (313), and the footrest flipping mechanism switches to the positioning state again.

2. A footrest flipping mechanism for a seat according to claim 1, characterized in that: It also includes a second rotating seat (32) formed on the outer edge of the footrest (4), the second rotating seat (32) is spaced apart from the first rotating seat (31) on the left and right, and the rotating shaft (8) is simultaneously provided on the first rotating seat (31), the second rotating seat (32), and the supporting seat (2).

3. The footrest flipping mechanism for a seat according to claim 2, characterized in that: The outer end of the second rotating seat (32) is connected to a protective cover (9).

4. The footrest flipping mechanism for a seat according to claim 1, characterized in that: A first spring (7) is installed in the limiting hole (21), one end of the first spring (7) abuts against the bottom wall of the limiting hole (21), and the other end of the first spring (7) acts on the positioning pin (6), thereby providing a restoring elastic force for the positioning pin (6).

5. The footrest flipping mechanism for a seat according to claim 1, characterized in that: A second spring (54) is provided between the first rotating seat (31) and the control member (5) for providing a restoring elastic force for the control member (5).

6. A footrest flipping mechanism for a seat according to claim 5, characterized in that: The control member (5) has a through hole (511), the first rotating seat (31) is provided with a column (311), the second spring (54) is sleeved on the column (311) and acts on the control member (5); the top end of the column (311) passes through the through hole (511), and the top end of the column (311) is threadedly connected with a limit screw (53) for limiting the control member (5) from being disengaged.

7. The footrest flipping mechanism for a seat according to claim 1, characterized in that: The control member (5) comprises a pressing cover (52) and a control body (51); the outer end surface of the control body (51) is recessed inwards, so that the control body (51) has a shell structure with an outer opening and an inner closed surface; the pressing cover (52) is connected to the outer opening of the control body (51).

8. The footrest flipping mechanism for a seat according to claim 7, characterized in that: A connecting rod (513) is provided in a control body (51) of the shell structure, a clamping hole (34) is provided at the top end of the connecting rod (513), a clamping column (91) is provided on the pressing cover (52), and the clamping column (91) is inserted into the clamping hole (34) to form an interference fit.

9. The footrest flipping mechanism for a seat according to claim 1, characterized in that: The plug post (512) is integrally formed on the control component (5).

10. A seat, characterized by: It comprises a chair seat (10) and the footrest flipping mechanism according to claim 1, wherein the guide rod (1) of the footrest flipping mechanism is slidably connected under the chair seat (10) in the front-rear direction.

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