Multi-section folding seat structure

Abstract

The utility model discloses a multi-section folding seat structure which comprises a plurality of structural frames, every two adjacent structural frames are connected through a rotating part, each rotating part comprises a ratchet fluted disc connected to one structural frame and a connecting sleeve arranged on the other structural frame, and each connecting sleeve is rotationally connected with the corresponding ratchet fluted disc. A clamping block used for being embedded between tooth grooves of a ratchet wheel fluted disc is arranged in the connecting sleeve, and the clamping block is used for limiting the rotation angle between the adjacent structural frames. Compared with the prior art, the folding seat has the following effects that in the using process, the clamping blocks can be embedded into the ratchet wheel fluted disc, the angle between the structural frames is fixed, multi-section adjustment is achieved, in the transportation process, the seat can be folded or unfolded to be flatly placed, and therefore the corresponding transportation effect is achieved, and transportation is convenient.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of seat structures, in particular to a multi-section folding seat structure. BACKGROUND

[0002] Seats are commonly used for resting and riding, and when not in use, the chair back is vertically arranged on the seat stool, and when stacked together, there is a large gap between the chair back and the seat stool, the space is wasted, and it is inconvenient to store, and a relatively large space is occupied. CONTENT OF THE UTILITY MODEL

[0003] In order to facilitate folding of the seat and convenient transportation, the application provides a multi-section folding seat structure.

[0004] The multi-section folding seat structure provided by the application adopts the following technical scheme: a multi-section folding seat structure comprises a plurality of structural frames, adjacent structural frames are connected through a rotating piece, the rotating piece comprises a ratchet disc connected to one of the structural frames and a connecting sleeve arranged on another structural frame, the connecting sleeve is rotationally connected with the ratchet disc, a clamping block for being embedded between the ratchet disc tooth grooves is arranged in the connecting sleeve, and the clamping block is used for limiting the rotation angle between adjacent structural frames.

[0005] By adopting the above technical scheme, in the process of use, the angle between the structural frames can be fixed by embedding the clamping block into the ratchet disc, multi-section adjustment is realized, in the process of transportation, the seat can be folded and placed or unfolded and placed, so that the corresponding transportation effect is realized, and transportation is facilitated.

[0006] Preferably, the clamping block is a rod, the connecting sleeve has a return spring arranged perpendicular to the clamping block, and the return spring is used for enabling the clamping block to always have a tendency to be embedded between the ratchet tooth grooves.

[0007] Preferably, the connecting sleeve has a sleeve, the clamping block has an extension rod inserted into the sleeve, and the return spring is arranged in the sleeve and the end portion of the return spring is connected to the extension rod.

[0008] Preferably, the two ends of the clamping block are embedded in the inner wall of the connecting sleeve, and the inner wall of the connecting sleeve has a containing groove for embedding the end portion of the clamping block.

[0009] Preferably, the clamping block is a round rod.

[0010] Preferably, the extension rod has a pull rod penetrating out of the top of the connecting sleeve, which is used for driving the clamping block to be separated from the ratchet tooth grooves.

[0011] Preferably, the structure frame is wrapped with a cover outside, and the cover outside is connected with a cushion through a zipper.

[0012] In summary, the present application has at least one of the following beneficial technical effects: during use, the angle between the structure frame and the structure frame can be fixed by embedding the clamping block into the ratchet tooth disc, realizing multi-section adjustment, during transportation, the seat can be folded and placed or unfolded and placed, thereby realizing corresponding transportation effect and facilitating transportation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of embodiment 1 of the present application;

[0014] Figure 2 is a partial exploded view of embodiment 1 of the present application;

[0015] Figure 3 is Figure 1 is an enlarged schematic diagram of part A in FIG. 1;

[0016] Figure 4 is a schematic diagram of the internal structure of the sleeve and the extension rod of embodiment 1 of the present application;

[0017] Figure 5 is a partial structural schematic diagram of embodiment 1 of the present application, used to show the shift fork;

[0018] Figure 6 is a structural schematic diagram of embodiment 2 of the present application.

[0019] Explanation of reference signs: 100, structure frame; 110, rotating part; 111, ratchet tooth disc; 112, connecting sleeve; 113, clamping block; 114, sleeve; 115, extension rod; 116, return spring; 117, accommodating groove; 120, pull rod; 121, protrusion; 130, shift fork; 140, cover; 141, cushion. DETAILED DESCRIPTION

[0020] The present application will be further described in detail below with reference to the accompanying drawings.

[0021] Embodiment 1: refer to Figure 1 , Figure 2The embodiment 1 of the present application discloses a multi-section folding seat structure, comprising a plurality of structure frames 100, three structure frames 100 are arranged in the embodiment, which are a seat cushion, a back cushion and a headrest respectively, adjacent structure frames 100 are connected through a rotating part 110, the rotating part 110 comprises a ratchet tooth disc 111 connected to one of the structure frames 100 and a connecting sleeve 112 arranged on the other structure frame 100, the connecting sleeve 112 is rotationally connected with the ratchet tooth disc 111, the connecting sleeve 112 is provided with a clamping block 113 for being embedded between the tooth grooves of the ratchet tooth disc 111, and the clamping block 113 is used for limiting the rotation angle between the adjacent structure frames 100.

[0022] The clamping block 113 is a rod and a round rod, the connecting sleeve 112 has a sleeve 114, the clamping block 113 has an extension rod 115 inserted into the sleeve 114 and coaxially arranged, the sleeve 114 is provided with a reset spring 116 perpendicular to the clamping block 113, the reset spring 116 is sleeved on the extension rod 115, and the end of the reset spring 116 is connected to the extension rod 115, the reset spring 116 is used for making the clamping block 113 have a tendency to be always embedded between the ratchet tooth grooves.

[0023] Referring to Figure 2 , Figure 3 In the embodiment, the ratchet tooth disc 111 is arranged at intervals and has two, which correspond to the two ends of the clamping block 113, so as to increase the fixing stability. The ratchet tooth disc 111 is fixed with a rotating shaft in the middle, which is used for forming rotation in cooperation with the connecting sleeve 112. The two ends of the clamping block 113 are embedded in the inner wall of the connecting sleeve 112, and the inner wall of the connecting sleeve 112 has a containing groove 117 for embedding the end of the clamping block 113. In the process of rotation, the round rod can slide along the direction of the arc-shaped ratchet tooth groove and be continuously embedded between the two ratchet tooth grooves, so as to form unidirectional rotation.

[0024] Referring to Figure 3 , Figure 4 The extension rod 115 has a pull rod 120 penetrating out of the top of the connecting sleeve 112, which is used for driving the clamping block 113 to be separated from the ratchet tooth groove. Generally, the pull rod 120 needs to move outward, so that the clamping block 113 is separated from the containing groove 117.

[0025] Referring to Figure 4 , Figure 5In order to facilitate operation, a shift fork 130 is further rotatably connected to the outside of the connecting sleeve 112 in the embodiment, the end of the pull rod 120 is provided with a protrusion 121, the shift fork 130 is inserted on the pull rod 120, the middle part of the shift fork 130 is rotatably connected to the outer wall of the connecting sleeve 112, when the outer end of the shift fork 130 is turned to one side, the other side will be pressed under the protrusion 121, so that the pull rod 120 moves outward, and then the two structural frames 100 can be freely rotated. After the shift fork 130 is loosened, the reset spring 116 will continue to lock the rotation angle of the clamping block 113.

[0026] Embodiment 2: Different from embodiment 1, referring to Figure 6 The outer side of the structural frame 100 is further provided with a cover 140, the outer side of the cover 140 is connected with a back cushion 141 through a zipper.

[0027] The embodiments of the specific embodiments are the preferred embodiments of the application, not limited to the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A multi-section folding seat structure comprising a number of structural frames (100), characterised in that: The adjacent structural frames (100) are connected by a rotating member (110), the rotating member (110) comprises a ratchet tooth disc (111) connected to one of the structural frames (100) and a connecting sleeve (112) arranged on the other structural frame (100), the connecting sleeve (112) is rotationally connected with the ratchet tooth disc (111), the connecting sleeve (112) is provided with a clamping block (113) for embedding between the tooth grooves of the ratchet tooth disc (111), the clamping block (113) is used for limiting the rotation angle between the adjacent structural frames (100).

2. A multi-section foldable seat structure according to claim 1, wherein: The clamping block (113) is a rod, the connecting sleeve (112) is provided with a reset spring (116) arranged perpendicular to the clamping block (113), the reset spring (116) is used for making the clamping block (113) always have the tendency of embedding between the tooth grooves of the ratchet tooth disc (111).

3. A multi-section foldable seat structure according to claim 2, wherein: The connecting sleeve (112) is provided with a sleeve (114), the clamping block (113) is provided with an extension rod (115) inserted into the sleeve (114), the reset spring (116) is arranged in the sleeve (114), and the end of the reset spring (116) is connected to the extension rod (115).

4. A multi-section foldable seat structure according to claim 3, wherein: The two ends of the clamping block (113) are embedded in the inner wall of the connecting sleeve (112), and the inner wall of the connecting sleeve (112) is provided with a receiving groove (117) for embedding the ends of the clamping block (113).

5. A multi-section foldable seat structure according to claim 4, wherein: The clamping block (113) is a round rod.

6. A multi-section foldable seat structure according to claim 5, wherein: The extension rod (115) is provided with a pull rod (120) penetrating through the top of the connecting sleeve (112), which is used for driving the clamping block (113) to be separated from the tooth grooves of the ratchet tooth disc (111).

7. A multi-section folding seat structure according to any one of claims 1 to 6, wherein: The outer side of the structural frame (100) is provided with a cover (140), and the outer side of the cover (140) is connected with a back cushion (141) through a zipper.

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