Height increasing chair convenient to fold

Abstract

The utility model relates to the technical field of chairs, in particular to a height increasing chair convenient to fold, which comprises a chair main body, a backrest, a first sliding lock block, a U-shaped armrest piece, two support pieces and two support legs, an upper rotating cavity is concavely arranged at the top of a rear side plate of the chair main body, and a first lock hole is concavely arranged on the bottom wall of the upper rotating cavity; the two sides of the bottom of the backrest are rotationally connected with the upper rotating cavity, the first sliding locking block is elastically and slidably connected to the back face of the backrest and elastically inserted into the first locking hole, the two ends of the U-shaped armrest piece are rotationally connected with the two sides of the backrest correspondingly, and the top ends of the two supporting pieces are rotationally connected with the two sides of the front end of the U-shaped armrest piece correspondingly. The bottom ends of the two supporting pieces are rotationally connected with the two sides of the front end of the seat body respectively, the two supporting legs are arranged on the two sides of the bottom of the seat body respectively, and the backrest can rotate into the space of the U-shaped armrest pieces. According to the folding chair, the backrest and the U-shaped armrest parts can be quickly folded and unfolded, and the folding chair is compact in folded structure, small in size and convenient to carry.

Description

TECHNICAL FIELD

[0001] The utility model relates to chair technical field especially point a kind of height-increasing chair convenient to fold. BACKGROUND

[0002] Height-increasing chair is widely used as a kind of baby products in the world. Various styles, structures of height-increasing chair are flooded in the market, but the height-increasing chair on the market is basically not foldable, and the volume is large when not in use, occupies space, and is inconvenient to carry. In the existing patent, the height-increasing chair disclosed in the Chinese patent document with application number 201220403315.7 and the child height-increasing chair disclosed in the Chinese patent document with application number 202010383645.3 both have the problems of large volume, space occupation and inconvenience to carry when not in use. Therefore, the defect is obvious, and a solution is urgently needed. SUMMARY

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a height-increasing chair convenient to fold.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A height-increasing chair convenient to fold, comprising a seat body, a backrest, a first sliding lock block, a U-shaped armrest, two support pieces and two legs, a top of the rear side plate of the seat body is concave to form an upper rotating cavity, a bottom wall of the upper rotating cavity is concave to form a first lock hole, the bottom of the backrest is rotatably connected with the upper rotating cavity, the first sliding lock block is elastically connected to the back of the backrest, the first sliding lock block is elastically inserted into the first lock hole, the two ends of the U-shaped armrest are rotatably connected with the two sides of the backrest, the top ends of the two support pieces are rotatably connected with the front ends of the two sides of the U-shaped armrest, the bottom ends of the two support pieces are rotatably connected with the front ends of the two sides of the seat body, the two legs are respectively arranged at the bottom of the two sides of the seat body, and the two legs are used to support the seat body. The backrest can be rotated into the space of the U-shaped armrest.

[0006] Further, the rear side wall of the upper rotating cavity is concave to form a first clamping groove, and the first clamping groove is used to clamp the first sliding lock block.

[0007] Further, the first sliding lock block is elastically connected with the backrest through a first elastic piece.

[0008] Further, the side surface of the backrest is provided with a cavity, the side surface of the first sliding lock block is convex to form a sliding block, the sliding block is slidably arranged in the cavity, the first elastic piece is arranged in the cavity, and the two ends of the first elastic piece are elastically abutted with the top wall of the cavity and the top surface of the sliding block, respectively.

[0009] Further, the top of the supporting leg is rotationally connected with the bottom of the seat body; the bottom surface of the seat body is concavely provided with a receiving cavity, and the supporting leg can rotate into the receiving cavity, which is used for receiving the supporting leg.

[0010] Further, the bottom of the seat body is provided with a lower rotation cavity, and the top of the supporting leg is rotationally connected with the lower rotation cavity.

[0011] Further, the bottom of the seat body is provided with two pairs of corner seat groups, which are respectively and correspondingly arranged with the two supporting legs; each corner seat group comprises two corner seats arranged at two corner positions of the bottom of the seat body, and the two corner seats are oppositely arranged and form the lower rotation cavity.

[0012] Further, the side wall of the supporting leg is elastically and slidably connected with a second sliding lock block, and the bottom wall of the lower rotation cavity is concavely provided with a second lock hole, and the second sliding lock block is elastically inserted into the second lock hole.

[0013] Further, the side wall of the lower rotation cavity is concavely provided with a second clamping groove, which is used for clamping the second sliding lock block.

[0014] Further, the folding height-increasing chair further comprises a dining tray, which is detachably connected with the front side of the U-shaped handrail.

[0015] The utility model discloses the beneficial effects that in practical application, when the height-increasing chair is in the unfolded state, two supporting legs support the seat body, the backrest stands up, the first sliding lock block is elastically inserted into the first lock hole, so as to lock the standing backrest, and the height-increasing chair stably keeps the unfolded state; when the height-increasing chair needs to be folded, the first sliding lock block is pulled up, the first sliding lock block is pulled out from the first lock hole, then horizontal force is applied to the top of the backrest, the backrest is gradually rotated from the standing state to the horizontal state, in the process that the backrest is folded down, the backrest pushes the U-shaped handrail, the U-shaped handrail moves forward while rotating relative to the backrest and the supporting leg, the U-shaped handrail that moves forward drives two supporting legs to swing, until the U-shaped handrail, the backrest and the seat body are folded, at this time, the backrest is in the lying state, and the backrest is contained in the space of the U-shaped handrail. The utility model can realize the quick folding and unfolding of the backrest and the U-shaped handrail, the structure is compact when folding, the volume is small, and the height-increasing chair is convenient to carry. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0017] Figure 2 It is another three-dimensional structure schematic diagram of the utility model from another perspective.

[0018] Figure 3 It is still another three-dimensional structure schematic diagram of the utility model from another perspective.

[0019] Figure 4 is a decomposition structure schematic view of the utility model.

[0020] Figure 5 is another decomposition structure schematic view of the utility model.

[0021] Figure 6 is a three-dimensional structure schematic view of the seat body of the utility model.

[0022] Mark explanation:

[0023] 1, seat body;2, backrest;3, first sliding lock block;4, U-shaped armrest piece;5, support piece;6, supporting leg;7, upper rotating cavity;8, first lock hole;9, first clamping groove;10, first elastic piece;11, cavity;12, sliding block;13, storage cavity;14, lower rotating cavity;15, angle seat group;16, angle seat;17, second sliding lock block;18, second lock hole;19, second clamping groove;20, dinner plate;21, second elastic piece. Specific implementation

[0024] In order to facilitate the understanding of those skilled in the art, the utility model is further illustrated below in combination with examples and drawings, and the content mentioned in the implementation mode is not a limitation of the utility model.

[0025] As Figures 1 to 6 Indicated, the utility model provides a kind of height chair of folding, it includes seat body 1, backrest 2, first sliding lock block 3, U-shaped armrest piece 4, two support pieces 5 and two supporting legs 6, the backside plate top of seat body 1 is recessed with upper rotating cavity 7, the bottom wall of upper rotating cavity 7 is recessed with first lock hole 8, the bottom two sides of backrest 2 are rotatably connected with upper rotating cavity 7, first sliding lock block 3 is elastically connected in the back of backrest 2, first sliding lock block 3 is elastically inserted into first lock hole 8, the two ends of U-shaped armrest piece 4 are rotatably connected with the two sides of backrest 2 respectively, the top end of two support pieces 5 is rotatably connected with the front end two sides of U-shaped armrest piece 4 respectively, the bottom end of two support pieces 5 is rotatably connected with the front end two sides of seat body 1 respectively, two supporting legs 6 are respectively arranged in the bottom two sides of seat body 1, two supporting legs 6 are used to support seat body 1, backrest 2 can be rotated to the space of U-shaped armrest piece 4;U-shaped armrest piece 4, support piece 5, seat body 1 and backrest 2 between approximately form parallelogram structure.

[0026] In actual application, when the height-increasing chair is in the unfolded state, the two supporting legs 6 support the seat body 1, the backrest 2 is erected, the first sliding lock block 3 is elastically inserted into the first lock hole 8 to lock the erected backrest 2, so that the height-increasing chair is stably kept in the unfolded state; when it is needed to fold the height-increasing chair, the first sliding lock block 3 is pulled upward, so that the first sliding lock block 3 is pulled out of the first lock hole 8, then a horizontal force is applied to the top of the backrest 2, so that the backrest 2 is gradually rotated from the erected state to the horizontal state, in the process of folding the backrest 2 downward, the backrest 2 pushes the U-shaped armrest 4, so that the U-shaped armrest 4 is rotated relative to the backrest 2 and the supporting leg 5 and is also moved forward, the U-shaped armrest 4 moving forward drives the two supporting legs 5 to swing, until the U-shaped armrest 4, the backrest 2 and the seat body 1 are folded, at this time, the backrest 2 is in the lying state and is contained in the space of the U-shaped armrest 4. The height-increasing chair can realize quick folding and unfolding of the backrest 2 and the U-shaped armrest 4, the folded structure is compact, the volume is small, and the height-increasing chair is convenient to carry.

[0027] In the embodiment, the rear side wall of the upper rotating cavity 7 is concave with a first clamping groove 9, and the first clamping groove 9 is used for clamping with the first sliding lock block 3. In actual application, when the backrest 2 is in the folded state, the first sliding lock block 3 is elastically inserted into the first clamping groove 9, the first sliding lock block 3 is clamped with the first clamping groove 9, so that the backrest 2 can be stably kept in the folded state.

[0028] Specifically, the back of the backrest 2 is provided with an upper sliding groove, and the first sliding lock block 3 is slidingly arranged in the upper sliding groove. In the reciprocating movement process of the first sliding lock block 3, the upper sliding groove plays a guiding and positioning role on the first sliding lock block 3, improves the movement stability of the first sliding lock block 3, and the first sliding lock block 3 is not easy to separate from the backrest 2.

[0029] In the embodiment, the first sliding lock block 3 is elastically connected with the backrest 2 through the first elastic member 10; specifically, the first elastic member 10 can adopt a spring; when the first sliding lock block 3 is inserted into the first lock hole 8, the first elastic member 10 applies an elastic force to the first sliding lock block 3 towards the first lock hole 8, so that the first sliding lock block 3 can be stably inserted into the first lock hole 8. When the first sliding lock block 3 is inserted into the first clamping groove 9, the first elastic member 10 applies an elastic force to the first sliding lock block 3 towards the first clamping groove 9, so that the first sliding lock block 3 can be stably inserted into the first clamping groove 9.

[0030] In the embodiment, the backrest 2 is provided with a cavity 11 on the side, the first sliding lock block 3 is provided with a sliding block 12 on the side, the sliding block 12 is slidingly arranged in the cavity 11, the first elastic member 10 is arranged in the cavity 11, and the two ends of the first elastic member 10 are in elastic contact with the top wall of the cavity 11 and the top surface of the sliding block 12, respectively. The structure design is beneficial to the stable installation and use of the first elastic member 10, and when the first sliding lock block 3 reciprocally moves, the sliding block 12 moves in the cavity 11, the cavity 11 plays a guiding and positioning role on the sliding block 12, and the use stability of the first sliding lock block 3 is further improved.

[0031] In the embodiment, the top of the supporting leg 6 is rotationally connected with the bottom of the seat body 1, the bottom of the seat body 1 is concavely provided with a receiving cavity 13, the supporting leg 6 can be rotated into the receiving cavity 13, and the receiving cavity 13 is used for receiving the supporting leg 6. When the height-increasing chair is folded, the two supporting legs 6 are rotated into the receiving cavities 13, so that the two supporting legs 6 are folded, and the size of the height-increasing chair after being folded is further reduced.

[0032] In the embodiment, the bottom of the seat body 1 is provided with a lower rotation cavity 14, and the top of the supporting leg 6 is rotationally connected with the lower rotation cavity 14; the bottom of the seat body 1 is provided with two pairs of corner seat groups 15, the two pairs of corner seat groups 15 are respectively and correspondingly arranged with the two supporting legs 6, the corner seat group 15 comprises two corner seats 16 arranged at two corner positions of the bottom of the seat body 1, the two corner seats 16 are oppositely arranged and form the lower rotation cavity 14, and the top of the supporting leg 6 is rotationally connected with the two corner seats 16 of one pair of corner seat groups 15. During assembly, the corner seat group 15 can be assembled at the two corner positions of the bottom of the seat body 1 first, and then the supporting leg 6 is mounted on the two corner seats 16 of one pair of corner seat groups 15, or the supporting leg 6 can be mounted on the two corner seats 16 of one pair of corner seat groups 15 first, and then the corner seat group 15 is assembled on the bottom of the seat body 1 together with the supporting leg 6. The structure design realizes modular assembly, is convenient for disassembly and assembly of the supporting leg 6, and is convenient for processing and forming of components.

[0033] In the embodiment, the side wall of the supporting leg 6 is elastically and slidingly connected with a second sliding lock block 17, the bottom wall of the lower rotation cavity 14 is concavely provided with a second lock hole 18, the second sliding lock block 17 is elastically inserted into the second lock hole 18, the side wall of the lower rotation cavity 14 is concavely provided with a second clamping groove 19, and the second clamping groove 19 is used for clamping connection with the second sliding lock block 17. When the supporting leg 6 is in the unfolded state, the supporting leg 6 stands up, the second sliding lock block 17 is elastically inserted into the second lock hole 18, so that the supporting leg 6 is stably kept in the standing-up state; when the supporting leg 6 is in the folded state, the second sliding lock block 17 is elastically inserted into the second clamping groove 19, so that the supporting leg 6 is stably kept in the folded state.

[0034] Specifically, the side wall of the leg 6 is concavely provided with a lower sliding groove, and the second sliding lock block 17 is slidingly arranged in the lower sliding groove.

[0035] Specifically, the second sliding lock block 17 is elastically connected with the leg 6 via a second elastic member 21, and the second elastic member 21 can be a spring.

[0036] Specifically, the second sliding lock block 17 is provided with a guide groove, and the leg 6 is provided with a guide block which extends into the guide groove and can relatively move in the guide groove.

[0037] Specifically, the top of the first sliding lock block 3 is provided with a pull ring, and the second sliding lock block 17 is provided with a pull handle.

[0038] In the embodiment, the folding height-increasing chair further comprises a dining plate 20 which is detachably connected with the front side of the U-shaped handrail 4.

[0039] All the technical features in the embodiment can be freely combined according to actual needs.

[0040] The above embodiment is a preferred implementation scheme of the utility model, and the utility model can also be implemented in other ways without departing from the technical scheme concept. Any obvious replacement within the scope of the utility model is within the protection scope of the utility model.

Claims

1. A height increasing chair for ease of folding, characterised in that: The utility model provides a height increasing chair convenient to fold, which comprises a seat body (1), a backrest (2), a first sliding lock block (3), a U-shaped armrest (4) and two supporting pieces (5), a top of a rear side plate of the seat body (1) is concave to form an upper rotating cavity (7), a bottom wall of the upper rotating cavity (7) is concave to form a first lock hole (8), two sides of a bottom of the backrest (2) are rotatably connected with the upper rotating cavity (7), the first sliding lock block (3) is elastically and slidably connected to a back surface of the backrest (2), the first sliding lock block (3) is elastically inserted into the first lock hole (8), two ends of the U-shaped armrest (4) are rotatably connected with two sides of the backrest (2) respectively, top ends of the two supporting pieces (5) are rotatably connected with two sides of a front end of the U-shaped armrest (4) respectively, bottom ends of the two supporting pieces (5) are rotatably connected with two sides of a front end of the seat body (1) respectively, and the backrest (2) can be rotated into a space of the U-shaped armrest (4).

2. The height booster chair of claim 1, wherein: A rear side wall of the upper rotating cavity (7) is concave to form a first clamping groove (9), and the first clamping groove (9) is used for clamping the first sliding lock block (3).

3. The foldable booster chair of claim 1, wherein: The first sliding lock block (3) is elastically connected with the backrest (2) via a first elastic piece (10).

4. The foldable booster chair of claim 3, wherein: A side surface of the backrest (2) is provided with a containing cavity (11), a side surface of the first sliding lock block (3) is convex to form a sliding block (12), the sliding block (12) is slidably arranged in the containing cavity (11), the first elastic piece (10) is contained in the containing cavity (11), and two ends of the first elastic piece (10) are elastically abutted against a top wall of the containing cavity (11) and a top surface of the sliding block (12) respectively.

5. The foldable booster chair of claim 1, wherein: The height increasing chair convenient to fold further comprises two supporting legs (6), the two supporting legs (6) are arranged at two sides of a bottom of the seat body (1) respectively, and the two supporting legs (6) are used for supporting the seat body (1).

6. The foldable booster chair of claim 5, wherein: A top of the supporting leg (6) is rotatably connected with a bottom of the seat body (1). A bottom surface of the seat body (1) is concave to form a receiving cavity (13), the supporting leg (6) can be rotated into the receiving cavity (13), and the receiving cavity (13) is used for receiving the supporting leg (6).

7. A height booster chair according to claim 6, wherein: The seat body (1) is provided with two pairs of corner seat groups (15) at a bottom thereof, the two pairs of corner seat groups (15) are arranged one by one in correspondence with the two supporting legs (6) respectively, each corner seat group (15) comprises two corner seats (16) arranged at two corners of the bottom of the seat body (1) respectively, the two corner seats (16) are oppositely arranged and form a lower rotating cavity (14), and a top of the supporting leg (6) is rotatably connected with the lower rotating cavity (14).

8. The foldable booster chair of claim 7, wherein: A side wall of the supporting leg (6) is elastically and slidably connected with a second sliding lock block (17), a bottom wall of the lower rotating cavity (14) is concave to form a second lock hole (18), and the second sliding lock block (17) is elastically inserted into the second lock hole (18).

9. The foldable booster chair of claim 8, wherein: A side wall of the lower rotating cavity (14) is concave to form a second clamping groove (19), and the second clamping groove (19) is used for clamping the second sliding lock block (17).

10. The foldable booster chair of claim 1, wherein: The height increasing chair convenient to fold further comprises a dining tray (20), and the dining tray (20) is detachably connected with a front side of the U-shaped armrest (4).

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