Leg support adjusting mechanism and seat

Abstract

The utility model belongs to the technical field of seats, and particularly relates to a leg support adjusting mechanism and a seat. The leg support adjusting mechanism comprises a seat framework, an air bag, a first supporting plate and a second supporting plate used for supporting legs. The first supporting plate is mounted on the seat framework, and the second supporting plate is rotationally mounted on the seat framework; the air bag is installed between the first supporting plate and the second supporting plate and used for driving the second supporting plate to rotate around the seat framework. The leg support adjusting mechanism is simple in structure, low in manufacturing cost and small in occupied space; the first supporting plate and the second supporting plate can play a role in protecting the air bag, and the service life of the leg support adjusting mechanism is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of seats, and particularly relates to a leg rest adjusting mechanism and a seat. Background Art

[0002] There is a quite large contact area between the seat and the human body. To enhance the support and comfort of the seat for the human body, the seat generally includes a support structure body (skeleton) and a sponge cushion body arranged on the support structure body, and an outer seat cover that can beautify the appearance is coated on the outside of the support structure body and the sponge cushion body with leather or cloth such as carbon fiber. The sponge cushion body forms the main buffer structure through shock absorption and soft cushioning effects, so that when the user sits, their buttocks and back can be more comfortable.

[0003] The leg lengths of different users are different. To ensure the comfort of different users sitting on the seat, a leg rest adjusting mechanism needs to be provided on the seat. In the prior art, the leg rest adjusting mechanism usually consists of mechanical components such as a crank connecting rod mechanism and a lead screw nut mechanism. The mechanical components can drive the leg rest board to rotate or stretch to adjust the length of the seat leg rest board. However, the existing leg rest adjusting mechanism has technical problems such as large occupied space and high manufacturing cost. Summary of the Utility Model

[0004] Aiming at the technical problems of large occupied space and high manufacturing cost existing in the leg rest adjusting mechanism in the prior art, the utility model provides a leg rest adjusting mechanism and a seat.

[0005] In view of the above technical problems, an embodiment of the utility model provides a leg rest adjusting mechanism, including a seat skeleton, an airbag, a first support plate, and a second support plate for supporting the legs;

[0006] The first support plate is installed on the seat skeleton, and the second support plate is rotatably installed on the seat skeleton; the airbag is installed between the first support plate and the second support plate and is used to drive the second support plate to rotate around the seat skeleton.

[0007] Optionally, the seat skeleton includes a support steel pipe and a support block installed on the support steel pipe. The first support plate is installed on the support block, and the second support plate is rotatably installed on the support steel pipe.

[0008] Optionally, a bending groove is provided on the second support plate, and the bending groove is clamped with the support steel pipe.

[0009] Optionally, the first support plate includes a flat plate and a bending plate connecting the flat plate. The flat plate is attached to the front surface of the support block, and the bending plate wraps the corner of the support block.

[0010] Optionally, the support steel pipe includes a transverse steel pipe, a rotating shaft steel pipe, and a vertical steel pipe; the rotating shaft steel pipe is installed in front of the transverse steel pipe, and the vertical steel pipe is installed below the transverse steel pipe;

[0011] An accommodation space is defined between the rotating shaft steel pipe and the vertical steel pipe, and the support block is fixedly installed on the vertical steel pipe and located in the accommodation space; the second support plate is rotatably installed on the rotating shaft steel pipe.

[0012] Optionally, the airbag is fixedly attached to the first support plate and abuts against the second support plate.

[0013] Optionally, the leg rest adjusting mechanism further includes an air pump communicating with the airbag.

[0014] Another embodiment of the present invention further provides a seat, including the above-mentioned leg rest adjusting mechanism.

[0015] In the present invention, the first support plate is fixedly installed on the seat frame, the second support plate is rotatably installed on the seat frame, and the airbag is installed between the first support plate and the second support plate; during the inflation process of the airbag, the swelling of the airbag will drive the second support plate to rotate around the seat frame, so as to adjust the length of the second support plate extending at the front end of the seat; that is, the greater the swelling degree of the airbag, the longer the part of the second support plate extending at the front end of the seat, and the smaller the swelling degree of the airbag, the shorter the part of the second support plate extending at the front end of the seat. This leg rest adjusting mechanism uses the swelling degree of the airbag to adjust the seat leg rest. The structure of this leg rest adjusting mechanism is simple, the manufacturing cost is low, and the occupied space is small. In addition, the airbag is arranged between the first support plate and the second support plate, and the first support plate and the second support plate can play a role in protecting the airbag, extending the service life of this leg rest adjusting mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the drawings and embodiments.

[0017] Figure 1 is a schematic structural diagram of a seat leg rest adjusting structure provided by an embodiment of the present invention;

[0018] Figure 2 is a side view of the gas in the leg rest adjusting mechanism provided by an embodiment of the present invention;

[0019] Figure 3 is a side view of the seat leg rest adjusting structure provided by an embodiment of the present invention in an initial state;

[0020] Figure 4It is a side view when the leg rest adjusting structure of the seat provided by an embodiment of the present utility model rotates by a certain angle;

[0021] Figure 5 It is a side view when the leg rest adjusting structure of the seat provided by an embodiment of the present utility model rotates to the limit angle.

[0022] The reference numerals in the specification are as follows:

[0023] 1. Seat frame; 11. Support steel pipe; 111. Horizontal steel pipe; 112. Rotating shaft steel pipe; 113. Vertical steel pipe; 12. Support block; 2. Air bag; 3. First support plate; 31. Flat plate; 32. Bent plate; 4. Second support plate. Detailed implementation manners

[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] It should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "middle", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0026] As Figure 1 and Figure 2 shown, a leg rest adjusting mechanism provided by an embodiment of the present utility model includes a seat frame 1, an air bag 2, a first support plate 3 and a second support plate 4 for supporting the legs;

[0027] The first support plate 3 is installed on the seat frame 1, and the second support plate 4 is rotatably installed on the seat frame 1; the air bag 2 is installed between the first support plate 3 and the second support plate 4 and is used to drive the second support plate 4 to rotate around the seat frame 1. It can be understood that the second support plate 4 is rotatably installed at the front end of the seat frame 1 and is located below the seat frame 1; the second support plate 4 can be rotatably installed on the seat frame 1 through structures such as a sleeve and a card slot.

[0028] In the present utility model, the first support plate 3 is fixedly installed on the seat frame 1, the second support plate 4 is rotatably installed on the seat frame 1, and the airbag 2 is installed between the first support plate 3 and the second support plate 4; during the inflation process of the airbag 2, the swelling of the airbag 2 will drive the second support plate 4 to rotate around the seat frame 1, so as to adjust the length of the second support plate 4 extending at the front end of the seat; that is, the greater the swelling degree of the airbag 2, the longer the part of the second support plate 4 extending at the front end of the seat, and the smaller the swelling degree of the airbag 2, the shorter the part of the second support plate 4 extending at the front end of the seat. This leg rest adjustment mechanism uses the swelling degree of the airbag 2 to adjust the seat leg rest, and the structure of this leg rest adjustment mechanism is simple, with low manufacturing cost and small occupied space. In addition, the airbag 2 is arranged between the first support plate 3 and the second support plate 4, and the first support plate 3 and the second support plate 4 can play a role in protecting the airbag 2, extending the service life of this leg rest adjustment mechanism.

[0029] In one embodiment, as Figure 1 and Figure 2 shown, the seat frame 1 includes a support steel pipe 11 and a support block 12 installed on the support steel pipe 11. The first support plate 3 is installed on the support block 12, and the second support plate 4 is rotatably installed on the support steel pipe 11. It can be understood that the first support plate 3 and the support block 12 are connected by surface-to-surface connection, and the support block 12 can play a role in supporting the first support plate 3, the airbag 2 and the second support plate 4; the support steel pipe 11 has sufficient strength and stiffness to ensure the load-bearing capacity of the seat.

[0030] In one embodiment, as Figure 1 shown, the second support plate 4 is provided with a bending groove, and the bending groove is clamped with the support steel pipe 11. It can be understood that the second support plate 4 is rotatably installed on the support steel pipe 11 through the bending groove, and during the inflation and deflation process of the airbag 2, the second support plate 4 rotates along the support steel pipe 11 through the bending groove. In this embodiment, the disassembly and assembly operation between the second support plate 4 and the seat frame 1 is simple.

[0031] In one embodiment, as Figure 2 shown, the first support plate 3 includes a flat plate 31 and a bending plate 32 connecting the flat plate 31. The flat plate 31 is attached to the front surface of the support block 12, and the bending plate 32 wraps around the corner of the support block 12. It can be understood that the flat plate 31 can be attached to the front surface of the support block 12 through processes such as gluing, and the bending plate 32 bypasses the corner of the support block 12 and is attached to a part of the bottom surface of the support block 12, ensuring the stability of the first support plate 3 installed on the support block 12.

[0032] In one embodiment, as Figure 1 shown, the support steel pipe 11 includes a transverse steel pipe 111, a rotating shaft steel pipe 112, and a vertical steel pipe 113; the rotating shaft steel pipe 112 is installed in front of the transverse steel pipe 111, and the vertical steel pipe 113 is installed below the transverse steel pipe 111; it can be understood that the user's buttocks sit on the transverse steel pipe 111, and both the rotating shaft steel pipe 112 and the vertical steel pipe 113 are welded to the transverse steel pipe 111. Preferably, the outer diameter of the transverse steel pipe 111 is larger than the outer diameter of the rotating shaft steel pipe 112 and larger than the outer diameter of the vertical steel pipe 113.

[0033] An accommodation space is defined between the rotating shaft steel pipe 112 and the vertical steel pipe 113, and the support block 12 is fixedly installed on the vertical steel pipe 113 and located in the accommodation space; the second support plate 4 is rotatably installed on the rotating shaft steel pipe 112. It can be understood that the support block 12 is installed in front of the vertical steel pipe 113, and the gravity of the user's leg can be sequentially transmitted to the vertical steel pipe 113 through the second support plate 4, the airbag 2, and the first support plate 3, further ensuring the load-bearing capacity of the leg rest adjustment mechanism.

[0034] In one embodiment, the airbag 2 is fixedly attached to the first support plate 3 and abuts against the second support plate 4. It can be understood that the airbag 2 can be fixedly attached to the first support plate 3 by processes such as gluing. During the inflation and deflation of the airbag 2, the airbag 2 will drive the second support plate 4 to rotate around the support steel pipe 11. In this embodiment, the airbag 2 installed between the first support plate 3 and the second support plate 4 has high stability.

[0035] In one embodiment, the leg rest adjustment mechanism further includes an air pump (not shown in the figure) communicating with the airbag 2. It can be understood that the airbag 2 can be inflated and deflated.

[0036] In summary, the initial state of the second support plate 4 is as Figure 3 shown. At this time, no pressurized gas is injected into the airbag 2; the state after the second support plate 4 rotates a preset angle is as Figure 4 shown. At this time, some pressurized gas is injected into the airbag 2; the state when the second support plate 4 rotates to the limit state is as Figure 5 shown. At this time, the airbag 2 is filled with pressurized gas.

[0037] Another embodiment of the present invention further provides a seat, including the above-mentioned leg rest adjustment mechanism.

[0038] In the present utility model, the first support plate 3 is fixedly installed on the seat frame 1, the second support plate 4 is rotatably installed on the seat frame 1, and the airbag 2 is installed between the first support plate 3 and the second support plate 4; during the inflation process of the airbag 2, the swelling of the airbag 2 will drive the second support plate 4 to rotate around the seat frame 1, so as to adjust the length of the second support plate 4 extending at the front end of the seat; that is, the greater the swelling degree of the airbag 2, the longer the part of the second support plate 4 extending at the front end of the seat, and the smaller the swelling degree of the airbag 2, the shorter the part of the second support plate 4 extending at the front end of the seat. This leg rest adjustment mechanism uses the swelling degree of the airbag 2 to adjust the leg rest of the seat. The structure of this seat is simple, with low manufacturing cost and small occupied space. In addition, the airbag 2 is arranged between the first support plate 3 and the second support plate 4, and the first support plate 3 and the second support plate 4 can play a role in protecting the airbag 2, extending the service life of this seat.

[0039] The above are only embodiments of the seat leg rest adjustment and the seat of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A leg support adjustment mechanism, characterized in that: It includes a seat frame, an air bag, a first support plate, and a second support plate for supporting the legs; The first support plate is mounted on the seat frame, and the second support plate is rotatably mounted on the seat frame; the air bag is mounted between the first support plate and the second support plate, and is used to drive the second support plate to rotate around the seat frame.

2. The leg support adjustment mechanism according to claim 1, characterized in that: The seat frame includes a supporting steel pipe and a supporting block installed on the supporting steel pipe, the first supporting plate is installed on the supporting block, and the second supporting plate is rotatably installed on the supporting steel pipe.

3. The leg support adjustment mechanism according to claim 2, characterized in that: The second supporting plate is provided with a bending groove, and the bending groove is clamped with the supporting steel pipe.

4. The leg support adjustment mechanism according to claim 2, characterized in that: The first support plate includes a flat plate and a bent plate connected to the flat plate, the flat plate is attached to the front of the support block, and the bent plate wraps the corner of the support block.

5. The leg support adjustment mechanism according to claim 2, characterized in that: The supporting steel pipe includes a transverse steel pipe, a rotating shaft steel pipe and a vertical steel pipe; the rotating shaft steel pipe is installed in front of the transverse steel pipe, and the vertical steel pipe is installed below the transverse steel pipe; An accommodating space is defined between the rotating shaft steel tube and the vertical steel tube, the supporting block is fixedly mounted on the vertical steel tube and is located in the accommodating space; and the second supporting plate is rotatably mounted on the rotating shaft steel tube.

6. The leg support adjustment mechanism according to claim 1, characterized in that: The air bag is fixedly attached to the first support plate and abuts against the second support plate.

7. The leg support adjustment mechanism according to claim 1, characterized in that: The leg support adjustment mechanism also includes an air pump connected to the air bag.

8. A seat, characterized in that: It comprises a leg support adjustment mechanism as described in any one of claims 1 to 7.

Images