Folding chair

Abstract

The present application relates to the technical field of chairs, and specifically to a folding chair, comprising: a chair assembly, which comprises a chair body and a backrest body that rotatably fit each other, sliding members being provided on the backrest body; a front leg pipe assembly, the end of the chair body away from the backrest body being rotatably connected to the front leg pipe assembly; a rear leg pipe assembly, which is rotatably connected to one end of the front leg pipe assembly, the sliding members being in sliding fit with the rear leg pipe assembly, and locking holes being formed in the rear leg pipe assembly; and a locking assembly, which is installed on one of the sliding members, the locking assembly comprising a locking sliding block and a biasing member, and the locking sliding block penetrating through the sliding member. The backrest body and the chair body, the chair body and the front leg pipe assembly, and the front leg pipe assembly and the rear leg pipe assembly are all rotatably connected to each other, and the backrest body and the rear leg pipe assembly are in sliding fit by means of the sliding members, such that the folding chair can be unfolded and folded both by means of an one-step operation, greatly simplifying unfolding and folding operations of the folding chair, and rapidly folding and unfolding the folding chair.

Description

A folding seat

[0001] Cross-reference to Related Applications

[0002] The present application claims priority to the Chinese patent application No. 202420915787.3, filed on April 28, 2024, and entitled "A folding seat", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of seats, in particular to a folding seat. BACKGROUND

[0004] A children's dining chair is a special chair for children to sit and eat. From the material, it can be divided into wooden dining chairs, bamboo dining chairs and plastic metal rod combination dining chairs. From the structure, it can be divided into fixed dining chairs and folding dining chairs. The folding dining chair has the characteristics of being able to be unfolded when in use and being able to be folded when not in use, and is more convenient to use and store and saves space.

[0005] In the prior art, the chair seat, the chair back, the front support leg and the rear support leg and other components in the folding dining chair are separately foldable and matched. When unfolded for use and folded for storage, the unfolding or folding process of the folding dining chair needs to be operated multiple times, which makes the unfolding and folding process of the folding dining chair cumbersome. SUMMARY

[0006] Therefore, the technical problem to be solved by the present application is to overcome the defect that the folding and unfolding process of the folding dining chair in the prior art is cumbersome, so as to provide a folding seat.

[0007] In order to solve the above technical problem, the present application provides a folding seat, comprising:

[0008] A seat assembly comprising a chair seat body and a backrest body rotatably connected, a sliding member is arranged on the backrest body;

[0009] A front leg pipe assembly, one end of the chair seat body away from the backrest body is rotatably connected with the front leg pipe assembly;

[0010] A rear leg pipe assembly rotatably connected with one end of the front leg pipe assembly, the sliding member is slidably connected with the rear leg pipe assembly, and a locking hole is arranged on the rear leg pipe assembly;

[0011] A locking assembly is installed on the sliding member, the locking assembly comprises a locking slider and a biasing member, and the locking slider is arranged through the sliding member;

[0012] The biasing member is adapted to apply a biasing force to the locking slider towards the rear leg pipe assembly, so that the locking slider has a locking state of being limited by the locking hole under the action of the biasing force, and an unlocking state of moving out of the locking hole under the action of an external force.

[0013] Optionally, the locking assembly further comprises:

[0014] a fixed part, fixedly connected with the sliding part;

[0015] a pressing part, rotatably installed on the fixed part, the locking block and the biasing part are respectively arranged on two sides of the rotating shaft of the pressing part, one end of the biasing part is in abutment with the pressing part, and the other end is in abutment with the sliding part.

[0016] Optionally, the fixed part is a fixed groove fixedly installed on the sliding part, the pressing part is rotatably installed on the inner side wall of the fixed groove, and the locking block and the biasing part are both installed in the fixed groove.

[0017] Optionally, the end of the locking block matched with the locking hole is provided with a locking protrusion towards one side of the biasing part;

[0018] and / or the end of the locking block matched with the locking hole is provided with a relief chamfer away from one side of the biasing part.

[0019] Optionally, one side of the pressing part facing the sliding part is provided with an abutment part extending towards the sliding part, the locking block is installed on the abutment part, and the abutment part is in abutment with the sliding part when the locking block is in the locking state.

[0020] Optionally, the rear leg pipe assembly comprises a rear leg pipe body and a side wall part fixedly installed on the top of the rear leg pipe body, the side wall part is arranged at an angle with the rear leg pipe body and extends towards the front leg pipe assembly, and the front leg pipe assembly is rotatably connected with the side wall part.

[0021] Optionally, the side wall part is detachably installed with a dinner plate assembly.

[0022] Optionally, the front leg pipe assembly comprises a pedal cross plate and a pair of front leg pipe bodies, and the pedal cross plate is fixedly installed between the pair of front leg pipe bodies.

[0023] Optionally, the front leg pipe assembly is installed with a front extension assembly at the bottom, and the rear leg pipe is installed with a rear extension assembly at the bottom.

[0024] Optionally, the biasing part is an elastic reset part or an electrically powered force applying part or a pneumatically powered force applying part.

[0025] The technical scheme has the following advantages:

[0026] 1. The folding chair provided in the present application, when unfolded, the backrest body is pulled to drive the sliding member to slide on the rear leg pipe assembly, and the two ends of the seat body are rotated relative to the backrest body and the front leg pipe assembly, respectively, and the front leg pipe assembly is rotated relative to the rear leg pipe assembly, when the sliding member drives the locking assembly to slide to the position where the locking block is aligned with the locking hole on the rear leg pipe assembly, the locking block is automatically pushed into the locking hole under the biasing force of the biasing member, thereby achieving the clamping and limiting of the locking block and the locking hole, and the locking block is converted to the locked state. At this time, due to the limiting of the locking assembly, the sliding member can no longer slide relative to the rear leg pipe assembly, so that the seat body and the front leg pipe assembly, and the seat body and the backrest body can no longer rotate relative to each other, and thus the front leg pipe assembly and the rear leg pipe assembly can no longer rotate relative to each other due to the limiting of the seat body, thereby achieving the locking of the unfolded folding chair and maintaining the unfolded state of the folding chair. When folding the folding chair, an external force is applied to the biasing member to overcome the biasing force of the biasing member on the locking block and move the locking block out of the locking hole to convert the locked state of the locking block to the unlocked state, so that the backrest body automatically slides down on the rear leg pipe assembly under the action of gravity, the seat body is rotated relative to the backrest body, and the seat body is rotated relative to the front leg pipe assembly, thereby driving the front leg pipe assembly to rotate relative to the rear leg pipe assembly. When the front leg pipe assembly and the rear leg pipe assembly contact, and the seat body and the backrest body contact, the folding chair is completely folded. The folding chair provided in the present application is rotatably connected between the backrest body and the seat body, the seat body and the front leg pipe assembly, and the front leg pipe assembly and the rear leg pipe assembly, and the backrest body and the rear leg pipe assembly are slidably connected through the sliding member, and the positioning and slidable state between the sliding member and the rear leg pipe assembly are controlled by the locking assembly. The folding chair can be unfolded and folded by one-step operation, which greatly simplifies the unfolding and folding operation of the folding chair and realizes the quick folding and unfolding of the folding chair. After folding, the front leg pipe assembly and the rear leg pipe assembly contact, and the seat body and the backrest body contact, so that the folding chair has a small volume and occupies less space.

[0027] 2. The folding chair provided in the present application, the presser and the fixed part are rotatably connected to form a seesaw structure, and the locking block and the biasing member between the presser and the sliding member are provided, the biasing member applies an upward biasing force to the presser, and the presser applies a pressure to the locking block on the other side to limit it in the locking hole, so that the locking block remains in the locked state; pressing one end of the biasing member provided on the presser by an external force can overcome the biasing force of the biasing member and drive the locking block to move out of the locking hole, so that the locking block is converted to the unlocked state.

[0028] 3. The folding seat provided by the present application, by setting the abutting part on the pressing part, and abutting the abutting part with the sliding part when the locking slider is locked, further limiting the depth of the locking slider into the locking hole, so that the biasing part can maintain constant biasing force, and improve the stability when the locking slider is in the locked state. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0030] Fig. 1 is a structural schematic view of the folding seat provided by the embodiment of the present application in the unfolded state.

[0031] Fig. 2 is a structural schematic view of the folding seat provided by the embodiment of the present application in the transition process from the unfolded state to the folded state.

[0032] Fig. 3 is a structural schematic view of the folding seat provided by the embodiment of the present application in the folded state.

[0033] Fig. 4 is a structural schematic view of the locking assembly provided by the embodiment of the present application.

[0034] Fig. 5 is a structural schematic view of the locking assembly provided by the embodiment of the present application, in which the locking slider is in the locked state.

[0035] Fig. 6 is a structural schematic view of the locking assembly provided by the embodiment of the present application, in which the locking slider is in the unlocked state.

[0036] Reference signs: 1, seat assembly; 2, front leg tube assembly; 3, rear leg tube assembly; 4, locking assembly; 5, front extension assembly; 6, rear extension assembly; 7, seat body; 8, back body; 9, sliding part; 10, front leg tube body; 11, footrest cross plate; 12, rear leg tube body; 13, side wall part; 14, locking hole; 15, locking slider; 16, biasing part; 17, fixing groove; 18, pressing part; 19, abutting part; 20, front extension rod; 21, front connecting rod; 22, rear extension rod; 23, rear connecting rod; 24, tray assembly. DETAILED DESCRIPTION

[0037] The technical solutions of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0038] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0040] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0041] Embodiment

[0042] Figures 1 to 6 show a folding seat provided by the present embodiment, which comprises a seat assembly 1, a front leg tube assembly 2, a rear leg tube assembly 3, a locking assembly 4 and a tray assembly 24.

[0043] The seat assembly 1 comprises a seat body 7 and a backrest body 8 connected by a rotating shaft, and the backrest body 8 is rotatably connected to the tail of the seat body 7. A sliding sleeve as a sliding part 9 is fixedly installed at the bottom of both sides of the backrest body 8.

[0044] The front leg tube assembly 2 comprises a footrest cross plate 11 and a pair of front leg tube bodies 10, the footrest cross plate 11 is fixedly installed between the pair of front leg tube bodies 10, and the footrest cross plate 11 is arranged close to the bottom of the front leg tube body 10. The two ends of the seat body 7 away from the backrest body 8 are rotatably connected with the two front leg tube bodies 10 in the front leg tube assembly 2 respectively, and the seat body 7 is rotatably connected to the middle part of the front leg tube body 10.

[0045] The rear leg pipe assembly 3 comprises a pair of rear leg pipe bodies 12 and a pair of side walls 13 fixedly installed on the top of the rear leg pipe bodies 12. In order to ensure that the side walls 13 are horizontal or close to horizontal after the folding seat is unfolded, the side walls 13 are bent. One side of the side wall 13 is fixedly connected with the rear leg pipe body 12, and the other side is bent to be arranged at an angle with the rear leg pipe body 12 and extends towards the front leg pipe assembly 2. The top of the front leg pipe body 10 in the front leg pipe assembly 2 is rotatably connected with the end of the side wall 13 away from the rear leg pipe assembly 3. The sliding sleeve, as the sliding part 9, is in sliding fit with the rear leg pipe body 12 in the rear leg pipe assembly 3. The locking hole 14 is arranged in the middle of the rear leg pipe body 12.

[0046] The locking assembly 4 is installed on one of the sliding sleeves. The locking assembly 4 comprises a locking slider 15, a biasing part 16, a fixed part and a pressing part 18. The locking slider 15 penetrates through the side wall of the sliding sleeve. The biasing part 16 is adapted to apply a biasing force to the locking slider 15 towards the rear leg pipe assembly 3, so that the locking slider 15 has a locking state of being limited by the locking hole 14 under the action of the biasing force, and an unlocking state of being removed from the locking hole 14 by overcoming the biasing force under the action of an external force. Specifically, the fixed part is fixedly connected with the sliding sleeve. In the embodiment, the fixed part is a fixed groove 17 fixedly installed on the sliding part 9. The pressing part 18 is rotatably installed on the inner side wall of the fixed groove 17. The locking slider 15 and the biasing part 16 are both installed in the fixed groove 17. The locking slider 15 and the biasing part 16 are respectively arranged on both sides of the rotation axis of the pressing part 18. One end of the biasing part 16 is in abutment with the pressing part 18, and the other end is in abutment with the outer side wall of the sliding sleeve. In the embodiment, the biasing part 16 is selected as a spring, and the spring is kept in a compressed state. When there is no external force, the spring is in abutment with the pressing part 18 and the sliding sleeve at both ends under the action of its own elastic force, so that one end of the pressing part 18 is subjected to an upward thrust of the spring. Under the action of the rotation axis, one end of the pressing part 18 connected with the locking slider 15 is pressed downward. When the locking slider 15 is slid to be aligned with the locking hole 14, it can automatically fall into the locking hole 14 to realize locking.

[0047] In order to facilitate the pressing of the pressing piece 18, prevent relative sliding between the hand and the pressing piece 18 during pressing, a friction strip is arranged on the outer surface of the pressing piece 18 corresponding to the side of the spring. In order to ensure that the locking slider 15 can smoothly enter and exit the locking hole 14, avoid the edges of the locking slider 15 and the edges of the locking hole 14 from being limited and jammed, the end of the locking slider 15 matched with the locking hole 14 is arranged with a locking protrusion towards the side of the biasing piece 16; the end of the locking slider 15 matched with the locking hole 14 is arranged with a let-go chamfer away from the side of the biasing piece 16, and the edges of the locking protrusion and the let-go chamfer are both arranged with a round corner transition. In order to ensure the stability of the locking slider 15 in the locked state, ensure that the spring as the biasing piece 16 is always in the compressed state, the side of the pressing piece 18 facing the sliding piece 9 is arranged with a protrusion as the abutting portion 19, the abutting portion 19 extends towards the sliding piece 9, the locking slider 15 is installed on the abutting portion 19, and the abutting portion 19 is in abutting cooperation with the sliding piece 9 when the locking slider 15 is in the locked state.

[0048] The folding seat in the embodiment is used as a child dining chair, and a dining plate assembly 24 is detachably installed on the side wall 13 to facilitate the child to sit on the seat body 7 to eat. Specifically, the bottom of the dining plate assembly 24 is provided with a sliding groove matched with the shape of the side wall 13, and the dining plate assembly 24 is slidably installed on the side wall 13. In order to avoid the child's legs from moving randomly when sitting on the seat body 7 to cause the tableware on the dining plate assembly 24 to be overturned, two leg limiting grooves are arranged on the bottom of the dining plate assembly 24 to limit the leg movement space of the child.

[0049] In order to make the folding seat provided in the embodiment adapt to dining tables of different heights, a front extension assembly 5 is installed at the bottom of the front leg pipe assembly 2, and a rear extension assembly 6 is installed at the bottom of the rear leg pipe. The front extension assembly 5 includes a pair of front extension rods 20, and a front connecting rod 21 is fixedly connected between the bottoms of the front extension rods 20. The front extension rods 20 are one-to-one correspondingly matched and installed with the front leg pipe bodies 10, the front extension rods 20 are sleeved and installed in the front leg pipe bodies 10, a limiting column is installed on the front extension rod 20 by a spring, a limiting hole is arranged at the bottom of the front leg pipe body 10, when the front extension rod 20 is inserted into the front leg pipe body 10, the limiting column is pressed down, and when the front extension rod 20 is inserted into the front leg pipe body 10 to align with the limiting hole, the limiting column is popped out and limitedly cooperates with the limiting block under the action of the spring. When the front extension rod 20 is separated from the front leg pipe body 10, the limiting column is pressed into the limiting hole by external force, and then the front extension rod 20 is pulled out of the front leg pipe body 10. The rear extension assembly 6 includes a pair of rear extension rods 22, and a rear connecting rod 23 is fixedly connected between the bottoms of the rear extension rods 22. The rear extension rods 22 are one-to-one correspondingly matched and installed with the rear leg pipe bodies 12, and the connection mode between the rear extension rods 22 and the rear leg pipe bodies 12 is the same as the connection mode between the front extension rods 20 and the front leg pipe bodies 10.

[0050] When unfolding the folding chair, the backrest body 8 is pulled to drive the sliding sleeve to slide on the rear leg pipe assembly 3, and the two ends of the seat body 7 are rotated relative to the backrest body 8 and the front leg pipe body 10, respectively, and the top of the front leg pipe body 10 is rotated relative to the side wall 13. When the sliding sleeve drives the locking assembly 4 to slide to the position where the locking block 15 is aligned with the locking hole 14 on the rear leg pipe body 12, the locking block 15 is automatically pushed into the locking hole 14 under the elastic force of the spring, so that the locking block 15 is clamped and limited with the locking hole 14, and the locking block 15 is converted to the locked state. At this time, due to the limitation of the locking assembly 4, the sliding sleeve can no longer slide relative to the rear leg pipe body 12, so that the seat body 7 and the front leg pipe body 10, and the seat body 7 and the backrest body 8 can no longer rotate relative to each other, and further the front leg pipe body 10 and the side wall 13 can no longer rotate relative to each other due to the limitation of the seat body 7, so as to realize the locking of the unfolded folding chair and maintain the unfolded state of the folding chair. When folding the folding chair, the pressing piece 18 is pressed to compress the spring, so as to overcome the elastic force of the spring and remove the biasing force of the pressing piece 18 on the locking block 15 due to the pressing of the spring. Under the action of the external pressure, the pressing piece 18 rotates around the rotating shaft on the fixed groove 17 to move the locking block 15 out of the locking hole 14, so that the locking state of the locking block 15 is converted to the unlocked state. The backrest body 8 automatically slides down on the rear leg pipe body 12 under the action of gravity, so that the seat body 7 rotates relative to the backrest body 8 and drives the seat body 7 to rotate relative to the front leg pipe body 10, and further drives the front leg pipe body 10 to rotate relative to the side wall 13. After the front leg pipe body 10 contacts the rear leg pipe body 12 and the seat body 7 contacts the backrest body 8, the folding chair is completely folded. The folding chair is rotationally connected between the backrest body 8, the seat body 7, the seat body 7 and the front leg pipe assembly 2, and the front leg pipe assembly 2 and the rear leg pipe assembly 3, and the backrest body 8 and the rear leg pipe assembly 3 are slidably connected by the sliding piece 9, and the positioning and slidable state between the sliding piece 9 and the rear leg pipe assembly 3 are controlled by the locking assembly 4. The folding and unfolding of the folding chair can be completed by one-step operation, which greatly simplifies the folding and unfolding operation of the folding chair and realizes the quick folding and unfolding of the folding chair.

[0051] As an alternative embodiment, the sliding piece 9 can also be provided as a sliding block or a sliding groove, and a sliding groove or a sliding block is correspondingly provided on the rear leg pipe assembly 3. The sliding block and the sliding groove are slidably connected to make the backrest body 8 and the rear leg pipe assembly 3 slidably connected.

[0052] As an alternative embodiment, the biasing member 16 can also be a torsion spring or a rubber elastic pad as an elastic return member or an electric cylinder, an electric push rod as an electric force applying member or a telescopic cylinder or a pneumatic push rod as a pneumatic force applying member.

[0053] Obviously, the above embodiments are merely exemplary but not limiting to the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A foldable seat, characterized in that, The application relates to a chair assembly (1) comprising: a seat body (7) and a back body (8) rotatably connected, the back body (8) being provided with a sliding piece (9); a front leg tube assembly (2) rotatably connected with one end of the seat body (7) away from the back body (8); a rear leg tube assembly (3) rotatably connected with one end of the front leg tube assembly (2), the sliding piece (9) being slidably connected with the rear leg tube assembly (3), the rear leg tube assembly (3) being provided with a locking hole (14); a locking assembly (4) mounted on the sliding piece (9), the locking assembly (4) comprising a locking slider (15) and a biasing piece (16), the locking slider (15) being arranged through the sliding piece (9); the biasing piece (16) being adapted to apply a biasing force to the locking slider (15) towards the rear leg tube assembly (3) to make the locking slider (15) have a locking state of being limited by the locking hole (14) under the action of the biasing force and an unlocking state of being removed from the locking hole (14) against the biasing force under the action of an external force.

2. The foldable seat of claim 1, wherein, The locking assembly (4) further comprises: a fixed part fixedly connected with the sliding piece (9); a pressing piece (18) rotatably mounted on the fixed part, the locking slider (15) and the biasing piece (16) being arranged on the two sides of the rotating shaft of the pressing piece (18) respectively, one end of the biasing piece (16) being abutted with the pressing piece (18) and the other end being abutted with the sliding piece (9).

3. The foldable seat of claim 2, wherein, The fixed part is a fixed groove (17) fixedly mounted on the sliding piece (9), the pressing piece (18) being rotatably mounted on the inner side wall of the fixed groove (17), the locking slider (15) and the biasing piece (16) being mounted in the fixed groove (17).

4. The folding seat of claim 2 or 3, wherein, One end of the locking slider (15) matched with the locking hole (14) is provided with a locking protrusion towards one side of the biasing piece (16); and / or the other end of the locking slider (15) matched with the locking hole (14) is provided with a relief chamfer away from one side of the biasing piece (16).

5. The foldable seat of claim 2 or 3, wherein, One side of the pressing piece (18) towards the sliding piece (9) is provided with an abutting part (19) extending towards the sliding piece (9), the locking slider (15) being mounted on the abutting part (19), the abutting part (19) being abutted with the sliding piece (9) when the locking slider (15) is in the locking state.

6. The foldable seat of any one of claims 1 to 3, wherein, The rear leg tube assembly (3) comprises a rear leg tube body (12) and a side wall (13) fixedly mounted on the top of the rear leg tube body (12), the side wall (13) being arranged at an angle with the rear leg tube body (12) and extending towards the front leg tube assembly (2), the front leg tube assembly (2) being rotatably connected with the side wall (13).

7. The foldable seat of claim 6, wherein, A dinner plate assembly (24) is detachably mounted on the side wall (13).

8. The foldable seat of any one of claims 1 to 3, wherein, The front leg pipe assembly (2) comprises a pair of front leg pipe bodies (10) and a foot cross plate (11) fixedly installed between the pair of front leg pipe bodies (10).

9. The foldable seat of any one of claims 1 to 3, wherein, The front leg pipe assembly (2) is provided with a front extension assembly (5) at the bottom, and the rear leg pipe is provided with a rear extension assembly (6) at the bottom.

10. The foldable seat of any one of claims 1 to 3, wherein, The biasing member (16) is an elastic return member or an electrically powered force applying member or a pneumatically powered force applying member.

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