Seat cushion

Abstract

The utility model belongs to the technical field of seat cushions, and particularly relates to a seat cushion which comprises a seat plate and a backrest which can be folded relatively, a connecting groove is formed below the seat plate, the backrest comprises a backup plate and a connecting seat which are integrally arranged, the backup plate and the connecting seat are arranged in an L shape, and the connecting seat extends towards the lower portion of the seat plate and is rotationally connected with the connecting groove. A locking device is arranged between the connecting seat and the seat plate, and the locking device is respectively connected with the connecting seat and the seat plate, so that the connecting seat and the seat plate are relatively fixed, the seat plate and the backrest are kept in an unfolded state, and the cushion is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of seat cushions, in particular to a seat cushion. Background Art

[0002] A cushion is a common daily necessities. Traditional cushions are mostly filled with soft fillings in a cloth cover. Since many office workers now sit for a long time, many cushions on the market now have backrests to support the user's waist and relieve fatigue.

[0003] In order to facilitate the storage and transportation of seat cushions, most common seat cushions on the market have foldable seat cushions and backrests, and in order to make the backrest unfold stably, most seat cushions are provided with supporting diagonal rods for supporting the backrest. For example, Chinese utility model patent application CN202223584226.X discloses an adjustable lumbar support cushion, which includes a seat cushion and a lumbar support backrest, the seat cushion is equipped with a locking structure, and the lumbar support backrest is equipped with an adjustment mechanism corresponding to the locking structure; the adjustment mechanism includes an adjustment center hole, a limit groove and a positioning step; the locking structure includes a support rod rotatably connected to the seat cushion, an adapter integrally formed with the support rod and a center rod installed on the adapter, one end of the center rod is provided with an enlarged end passing through the adjustment center hole, a limit rod is installed on the enlarged end, and the other end of the center rod is connected with a spring and an adjustment button; the adapter is also equipped with a limit protrusion block cooperating with the positioning step. The utility model discloses an adjustable waist-protecting seat cushion which supports the waist and corrects the sitting posture by adjusting the angles of the seat cushion and the backrest, and supports the back, waist and buttocks in three aspects to ensure the stability of the sitting posture.

[0004] Although the above structure facilitates the stable unfolding of the seat cushion and the lumbar support backrest, since the support rod is arranged behind the lumbar support backrest, it will cause a large gap between the seat cushion and the chair backrest during use. Some users who like to sit back will feel uncomfortable. In addition, since the adjustment button is arranged behind the lumbar support backrest in this structure, the adjustment button can be accidentally triggered during use, causing the seat cushion and the lumbar support backrest to accidentally fold over. Summary of the invention

[0005] In order to overcome the defects in the prior art, the purpose of the utility model is to provide a seat cushion with simple structure and convenient use.

[0006] The purpose of the utility model is achieved in this way:

[0007] A seat cushion comprises a seat plate and a backrest which can be folded relative to each other, a connecting groove is arranged under the seat plate, and the backrest comprises an integral back plate and a connecting seat, the back plate and the connecting seat are arranged in an L shape, the connecting seat extends below the seat plate and is rotatably connected to the connecting groove, a locking device is arranged between the connecting seat and the seat plate, and the locking device is respectively connected to the connecting seat and the seat plate, so that the connecting seat and the seat plate are relatively fixed, and the seat plate and the backrest are kept in an unfolded state.

[0008] The utility model is further configured as follows: the locking device is arranged below the connecting seat or the seat plate.

[0009] The utility model is further configured as follows: the locking device comprises a latch rod and an elastic member, and the elastic member drives the latch rod to reset and connect the latch rod to the connecting seat and the seat plate respectively.

[0010] The utility model is further configured as follows: the latch rod is a rotating body, and the elastic piece is sleeved on the latch rod.

[0011] The utility model is further configured as follows: a limiting convex edge is arranged on the latch rod, a limiting guide groove adapted to the limiting convex edge is arranged on the connecting seat or the seat plate, and the limiting convex edge cooperates with the limiting guide groove to limit the movement range of the latch rod.

[0012] The utility model is further configured as follows: a fixing groove is provided below the connecting seat, a pressure cover is detachably provided in the fixing groove, a latch rod and an elastic member are both provided between the pressure cover and the connecting seat, and guide holes are used on both sides of the pressure cover, the latch rod passes through the guide holes on both sides of the pressure cover, one end of the elastic member abuts against the latch rod, and the other end of the elastic member abuts against the side wall of the pressure cover.

[0013] The utility model is further configured as follows: the locking device is arranged below the connecting seat, a connecting block connected to the locking device is arranged in the connecting groove, a card slot adapted to the locking device is arranged on the side of the connecting block, a through slot adapted to the connecting block is arranged on the connecting seat, and the connecting block passes through the through slot so that the locking device can cooperate with the card slot on the side of the connecting block.

[0014] The utility model is further configured as follows: a positioning groove is arranged on the side wall of the through groove, a positioning protrusion adapted to the positioning groove is arranged on the side of the connecting block, and the positioning protrusion cooperates with the positioning groove to limit the movement of the backrest to the two sides of the seat plate.

[0015] The utility model is further configured as follows: a plurality of hinge grooves are arranged on the connecting seat, a plurality of hinge protrusions are formed by the seat plate extending toward the seat plate, and a supporting cross bar connecting the two side walls of the hinge groove is arranged in the hinge groove to control the relative expansion of the seat plate and the backrest, and the hinge protrusions abut against the supporting cross bar.

[0016] The utility model is further configured as follows: a first supporting protrusion is arranged on the lower side of the seat plate, and a second supporting protrusion is arranged under the connecting seat, the first supporting protrusion and the second supporting protrusion jointly support the seat cushion, and the second supporting protrusion can be pressed against the mounting surface and limit the backrest from flipping forward toward the seat plate.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] 1. The seat cushion in the utility model only includes a seat plate, a backrest and a locking device, which has a simple structure and is convenient for production and assembly. Moreover, since the connecting seat extends below the seat plate and is rotatably connected to the connecting groove, the seat cushion is pressed against the connecting seat when the user sits on the seat plate, thereby avoiding flipping and folding toward the seat plate, and making the backrest and the seat plate stably unfolded, which is convenient for the user to use.

[0019] 2. The locking device provided under the connecting seat or the seat plate in the utility model can prevent the locking device from being accidentally triggered during use of the seat cushion, and prevent the seat cushion from accidentally folding toward the seat plate during use, thus facilitating use by users.

[0020] 3. The latch rod and the elastic member in the utility model have a simple structure, which is convenient for production and assembly, and is conducive to keeping the locking device connected with the connecting seat and the seat plate, avoiding accidental folding of the seat cushion toward the seat plate, and making it convenient for users to use; the latch rod of the rotating body structure is convenient for flexible installation of the latch rod, and the elastic member sleeved on the latch rod is convenient for stable installation of the elastic member and stable deformation of the elastic member.

[0021] 4. The setting of the limiting convex edge and the limiting guide groove in the utility model can limit the movement range of the latch rod, reduce the useless work done by the user during use, and facilitate the user's use and control; the setting of the fixing groove and the pressure cover is convenient for the installation of the latch rod and the elastic member, and convenient for the assembly and production of the seat cushion, and the guide holes arranged on both sides of the pressure cover are convenient for the stable installation of the latch rod, avoiding the deflection of the latch rod affecting the connection and cooperation between the fruit and the seat plate.

[0022] 5. In the utility model, the seat plate and the backrest are positioned and connected by passing the connecting block through the through groove, so as to avoid deflection and dislocation when the locking device is connected to the slot, which is conducive to the quick connection and cooperation between the locking device and the slot; the setting of the positioning groove and the positioning protrusion reduces the shaking of the backrest and the seat plate during the mobile transportation, and reduces the noise and wear of the seat cushion during the mobile transportation.

[0023] 6. The setting of the hinge groove and the hinge protrusion in the utility model facilitates the stable connection between the seat plate and the backrest, and prevents the backrest from shaking to the sides of the seat plate, while the setting of the supporting cross bar is conducive to limiting and supporting the hinge protrusion, which is conducive to improving the structural strength of the connection between the seat plate and the backrest, and avoiding bending and damage at the connection between the backrest and the seat plate; the setting of the second supporting protrusion facilitates the close contact between the connecting seat and the mounting surface, thereby limiting the flipping of the backrest to the front of the seat plate, which is conducive to the stable expansion of the seat plate and the backrest, and avoiding damage to the locking device due to excessive force. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is a cross-sectional view of the utility model;

[0026] Figure 3 It is a partial cross-sectional view of the utility model;

[0027] Figure 4 It is an explosion schematic diagram of the utility model;

[0028] Figure 5 It is a structural schematic diagram of the seat plate in the utility model;

[0029] Figure 6 It is one of the structural schematic diagrams of the backrest in the utility model;

[0030] Figure 7 This is the second structural schematic diagram of the backrest in the utility model;

[0031] Figure 8 It is a structural schematic diagram of the latch rod in the utility model;

[0032] Fig. 9 It is a structural schematic diagram of the pressure cover in the utility model.

[0033] Meanings of the numbers in the figure: 1-seat plate; 11-connecting groove; 12-hinge protrusion; 13-connecting block; 14-cage slot; 15-first supporting protrusion; 121-supporting groove; 131-positioning protrusion; 2-backrest; 21-back plate; 22-connecting seat; 23-hinge groove; 24-through groove; 25-fixing groove; 26-guide groove; 27-second supporting protrusion;

[0034] 231-support crossbar; 241-positioning groove; 251-limiting guide groove; 3-latch rod; 31-limiting convex edge; 32-guide part; 33-connector; 34-support wall; 35-limiting wall; 4-elastic member; 5-pressure cover;

[0035] 51-Guide hole. DETAILED DESCRIPTION

[0036] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0037] See also Figures 1 to 9 As shown, a seat cushion comprises a seat plate 1 and a backrest 2 which can be folded relative to each other, a connecting groove 11 is provided under the seat plate 1, and the backrest 2 comprises an integrally arranged back plate 21 and a connecting seat 22, the back plate 21 and the connecting seat 22 are arranged in an L shape, the connecting seat 22 extends to the bottom of the seat plate 1 and is rotatably connected to the connecting groove 11, a locking device is provided between the connecting seat 22 and the seat plate 1, and the locking device is respectively connected to the connecting seat 22 and the seat plate 1, so that the connecting seat 22 and the seat plate 1 are relatively fixed, and the seat plate 1 and the backrest 2 are kept in an unfolded state. In this structure, the seat cushion only comprises the seat plate 1, the backrest 2 and the locking device, the structure is simple, and the production and assembly are convenient. Moreover, since the connecting seat 22 extends to the bottom of the seat plate 1 and is rotatably connected to the connecting groove 11, the seat cushion is pressed against the connecting seat 22 when the user sits on the seat plate 1, thereby avoiding flipping and folding toward the seat plate 1, and making the backrest 2 and the seat plate 1 stably unfolded, which is convenient for the user to use.

[0038] The locking device described in the utility model is arranged under the connecting seat 22 or the seat plate 1. The locking device arranged under the connecting seat 22 or the seat plate 1 can prevent the locking device from being accidentally triggered during the use of the seat cushion, and prevent the seat cushion from accidentally folding toward the seat plate 1 during use, which is convenient for users. Preferably, the locking device is arranged under the connecting seat 22.

[0039] The connecting groove 11 is provided with a connecting block 13 connected to the locking device, and a slot 14 adapted to the locking device is provided on the side of the connecting block 13. A through slot 24 adapted to the connecting block 13 is provided on the connecting seat 22. The connecting block 13 passes through the through slot 24 so that the locking device can cooperate with the slot 14 on the side of the connecting block 13. In this structure, the seat plate 1 and the backrest 2 are positioned and connected by the connecting block 13 passing through the through slot 24, which avoids deflection and dislocation when the locking device is connected to the slot 14, and is conducive to the quick connection and cooperation between the locking device and the slot 14.

[0040] In this embodiment, a positioning groove 241 is provided on the side wall of the through groove 24, and a positioning protrusion 131 adapted to the positioning groove 241 is provided on the side of the connecting block 13. The positioning protrusion 131 cooperates with the positioning groove 241 to limit the movement of the backrest 2 to the sides of the seat plate 1. The setting of the positioning groove 241 and the positioning protrusion 131 can reduce the shaking of the backrest 2 and the seat plate 1 during mobile transportation, reduce the noise emitted by the seat cushion during mobile transportation and reduce the wear of the seat cushion.

[0041] The locking device includes a latch rod 3 and an elastic member 4. The elastic member 4 drives the latch rod 3 to reset and connects the latch rod 3 to the connecting seat 22 and the seat plate 1 respectively. The latch rod 3 and the elastic member 4 have a simple structure, which is convenient for production and assembly, and is conducive to maintaining the connection between the locking device and the connecting seat 22 and the seat plate 1, avoiding accidental folding of the seat cushion toward the seat plate 1, and making it convenient for users to use.

[0042] Preferably, the latch rod 3 is a rotating body, and the elastic member 4 is sleeved on the latch rod 3. This structure facilitates flexible installation of the latch rod 3, and the elastic member 4 sleeved on the latch rod 3 facilitates stable installation of the elastic member 4 and stable deformation of the elastic member 4.

[0043] In this embodiment, a limiting convex edge 31 is provided on the latch rod 3, and a limiting guide groove 251 adapted to the limiting convex edge 31 is provided on the connecting seat 22 or the seat plate 1. The limiting convex edge 31 and the limiting guide groove 251 cooperate to limit the movement range of the latch rod 3. The setting of the limiting convex edge 31 and the limiting guide groove 251 can limit the movement range of the latch rod 3, reduce the useless work done by the user during use, and facilitate the user's control.

[0044] A fixing groove 25 is provided below the connecting seat 22, and a pressure cover 5 is detachably provided in the fixing groove 25. The latch rod 3 and the elastic member 4 are both provided between the pressure cover 5 and the connecting seat 22, and guide holes 51 are used on both sides of the pressure cover 5. The latch rod 3 passes through the guide holes 51 on both sides of the pressure cover 5, one end of the elastic member 4 abuts on the latch rod 3, and the other end of the elastic member 4 abuts on the side wall of the pressure cover 5. The setting of the fixing groove 25 and the pressure cover 5 facilitates the installation of the latch rod 3 and the elastic member 4, and facilitates the assembly and production of the seat cushion, and the guide holes 51 on both sides of the pressure cover 5 facilitate the stable installation of the latch rod 3, and avoid the deflection of the latch rod 3 affecting the connection and cooperation with the seat plate 1.

[0045] In this embodiment, a guide groove 26 is provided between the fixing groove 25 and the through groove 24. After the latch rod 3 passes through the guide groove 26, it cooperates with the card groove 14. Preferably, the latch rod 3 includes a guide portion 32, and an annular support wall 34 is provided on the guide portion 32. The elastic member 4 is a cylindrical compression spring. The elastic member 4 is sleeved on the guide portion 32, and the two ends of the elastic member 4 are respectively against the support wall 34 and the side wall of the pressure cover 5.

[0046] A hemispherical connector 33 is provided at the end of the guide rod, and the connector 33 guides the latch rod 3 so that the latch rod 3 can quickly cooperate with the slot 14. A limiting wall 35 is provided on one side of the limiting convex edge 31, and the limiting wall 35 can abut against the end of the guide hole 51, so as to prevent the limiting convex edge 31 from penetrating into the pressure cover 5. The latch rod 3 in the attached drawings of the specification cannot directly cooperate with or disengage from the guide hole 51 close to the limiting wall 35, but the manufacturer can adopt a detachable structure of the latch rod 3 to achieve the cooperation or disengagement of the latch rod 3 and the guide hole 51.

[0047] The connecting seat 22 described in the utility model is provided with a plurality of hinge grooves 23, the seat plate 1 extends toward the seat plate 1 to form a plurality of hinge protrusions 12, and a supporting cross bar 231 connecting the two side walls of the hinge groove 23 is provided in the hinge groove 23 to control the relative expansion of the seat plate 1 and the backrest 2, and the hinge protrusion 12 abuts against the supporting cross bar 231. The setting of the hinge groove 23 and the hinge protrusion 12 facilitates the stable connection between the seat plate 1 and the backrest 2 and prevents the backrest 2 from shaking to the two sides of the seat plate 1, and the setting of the supporting cross bar 231 is conducive to limiting and supporting the hinge protrusion 12, which is conducive to improving the structural strength of the connection position between the seat plate 1 and the backrest 2 and preventing the backrest 2 from bending and damaging the connection position between the seat plate 1. The utility model preferably provides a supporting groove 121 adapted to the supporting cross bar 231 on the hinge protrusion 12, and the supporting cross bar 231 is penetrated in the supporting groove 121.

[0048] A first supporting protrusion 15 is provided on the lower side of the seat plate 1, and a second supporting protrusion 27 is provided under the connecting seat 22. The first supporting protrusion 15 and the second supporting protrusion 27 jointly support the seat cushion, and the second supporting protrusion 27 can be pressed against the mounting surface and limit the backrest 2 from flipping forward toward the seat plate 1. The setting of the second supporting protrusion 27 facilitates the close contact between the connecting seat 22 and the mounting surface, thereby limiting the backrest 2 from flipping forward toward the seat plate 1, which is beneficial to the stable deployment of the seat plate 1 and the backrest 2, and avoids damage to the locking device due to excessive force.

[0049] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A seat cushion, comprising a seat plate (1) and a backrest (2) which can be folded relative to each other, characterized in that: A connecting groove (11) is provided below the seat plate (1), and the backrest (2) comprises an integrally arranged backrest plate (21) and a connecting seat (22), the backrest plate (21) and the connecting seat (22) being arranged in an L shape, the connecting seat (22) extending below the seat plate (1) and being rotatably connected to the connecting groove (11), a locking device being provided between the connecting seat (22) and the seat plate (1), the locking device being respectively connected to the connecting seat (22) and the seat plate (1), so that the connecting seat (22) and the seat plate (1) are relatively fixed, and the seat plate (1) and the backrest (2) are kept in an unfolded state.

2. A seat cushion according to claim 1, characterized in that: The locking device is arranged below the connecting seat (22) or the seat plate (1).

3. A seat cushion according to claim 1, characterized in that: The locking device comprises a latch rod (3) and an elastic member (4), wherein the elastic member (4) drives the latch rod (3) to reset and connects the latch rod (3) to the connecting seat (22) and the seat plate (1) respectively.

4. A seat cushion according to claim 3, characterized in that: The latch rod (3) is a rotating body, and the elastic member (4) is sleeved on the latch rod (3).

5. A seat cushion according to claim 3 or 4, characterized in that: The latch rod (3) is provided with a limiting convex edge (31), and the connecting seat (22) or the seat plate (1) is provided with a limiting guide groove (251) adapted to the limiting convex edge (31), and the limiting convex edge (31) cooperates with the limiting guide groove (251) to limit the movement range of the latch rod (3).

6. A seat cushion according to claim 3, characterized in that: A fixing groove (25) is provided below the connecting seat (22), a pressure cover (5) is detachably provided in the fixing groove (25), the latch rod (3) and the elastic member (4) are both provided between the pressure cover (5) and the connecting seat (22), and guide holes (51) are provided on both sides of the pressure cover (5), the latch rod (3) passes through the guide holes (51) on both sides of the pressure cover (5), one end of the elastic member (4) abuts against the latch rod (3), and the other end of the elastic member (4) abuts against the side wall of the pressure cover (5).

7. A seat cushion according to claim 1, characterized in that: The locking device is arranged below the connecting seat (22); a connecting block (13) connected to the locking device is arranged in the connecting groove (11); a clamping groove (14) adapted to the locking device is arranged on the side of the connecting block (13); a through groove (24) adapted to the connecting block (13) is arranged on the connecting seat (22); the connecting block (13) passes through the through groove (24) so ​​that the locking device can cooperate with the clamping groove (14) on the side of the connecting block (13).

8. A seat cushion according to claim 7, characterized in that: A positioning groove (241) is arranged on the side wall of the through groove (24), and a positioning protrusion (131) adapted to the positioning groove (241) is arranged on the side of the connecting block (13). The positioning protrusion (131) cooperates with the positioning groove (241) to limit the movement of the backrest (2) toward the two sides of the seat plate (1).

9. A seat cushion according to claim 1, characterized in that: The connecting seat (22) is provided with a plurality of hinge grooves (23), the seat plate (1) extends toward the seat plate (1) to form a plurality of hinge protrusions (12), and a support cross bar (231) is provided in the hinge groove (23) to connect the two side walls of the hinge groove (23), so as to control the seat plate (1) and the backrest (2) to unfold relative to each other, and the hinge protrusion (12) abuts against the support cross bar (231).

10. A seat cushion according to claim 1, characterized in that: A first supporting protrusion (15) is arranged on the lower side of the seat plate (1), and a second supporting protrusion (27) is arranged below the connecting seat (22); the first supporting protrusion (15) and the second supporting protrusion (27) jointly support the seat cushion, and the second supporting protrusion (27) can be pressed against the mounting surface and limit the backrest (2) from flipping forward toward the seat plate (1).

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