Suspension type hook and seat framework thereof

Abstract

The utility model relates to a suspension type hook and a seat framework thereof, the hook comprises a first annular buckle and a second annular buckle, one end of the first annular buckle and one end of the second annular buckle are connected, the other end of the first annular buckle and the other end of the second annular buckle are respectively provided with a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are configured to be detachably connected; when the first connecting piece and the second connecting piece are connected to form a connecting block, a bayonet matched with the cross beam is formed between the first connecting piece and the second connecting piece, the inner end of the connecting block abuts against the inner wall of the cross beam, and a clamping hole connected with the elastic piece is formed in the connecting block. According to the scheme, the suspension type hook is designed to be in an annular buckle form, the cross beam can be surrounded, the hook is tightly fixed to the cross beam, the gap between the hook and the cross beam is reduced, abnormal sound caused by friction between the hook and the cross beam is reduced, the comfort degree is improved, and meanwhile the surrounding structure can greatly improve the connecting strength of the hook and the cross beam; the stability of the hook is improved, and the hook is not easy to fall off.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a hanging hook and a seat frame thereof. Background Art

[0002] In order to improve the comfort of existing seats, some elastic components are installed on the frames of seats (sofas, leisure sofas, office chairs and car seats, etc.) to play a role of rebound and shock absorption.

[0003] For example, a Chinese utility model patent with publication number CN209650115U relates to a car seat frame with a spring assembly, comprising a seat frame comprising two opposing side panels, a front transverse tube and a rear transverse tube disposed transversely between the front and rear ends of the two side panels, and a plurality of spring assemblies uniformly spaced laterally and connected via a support frame line disposed between the two side panels. The front and rear ends of the spring assemblies are hooked onto the front transverse tube and the rear transverse tube, respectively. This utility model has a simple and rational structural design. By disposing the spring assembly within the seat frame, the deformation of the springs can adapt to the bumps of the car seat, thereby improving passenger comfort.

[0004] In the above scheme, the hook connected to one end of the spring group is directly hung on the cross tube, and the buckle plate connected to the other end of the spring group is connected to the cross tube by a nail gun. During use, these two connection methods make the hook or the buckle plate without a fixed part very easy to shake and rub against the cross tube to produce abnormal noise, which makes people feel uncomfortable. In addition, these two connection methods are unstable and easy to fall off during use.

[0005] In addition, some existing seat frames use old-style iron buckles, which are prone to making abnormal noises when in contact with the beams on the frame. Summary of the Invention

[0006] In order to solve the above problems, the first purpose of the present invention is to provide a hanging hook that can embrace the beam and tightly clamp it on the beam, effectively reducing the friction caused by shaking between the hook and the beam, reducing the occurrence of abnormal noise, and at the same time improving the connection strength between the hook and the beam to prevent the hook from falling off; the second purpose of the present invention is to provide a seat frame that adopts the above-mentioned hanging hook.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0008] A hanging hook, characterized in that: the hook includes a first ring buckle and a second ring buckle connected at one end, the other ends of the first ring buckle and the second ring buckle are respectively provided with a first connecting member and a second connecting member, and the first connecting member and the second connecting member are configured to be detachably connected; when the first connecting member and the second connecting member are connected to form a connecting block, a bayonet that cooperates with the crossbeam is formed between the first connecting member and the second connecting member, the inner end of the connecting block abuts against the inner wall of the crossbeam, and a bayonet hole connected to the elastic member is formed on the connecting block.

[0009] In the above technical solution, the hanging hook is designed as a ring buckle, and adopts a two-stage first and second ring buckle structure to encircle the beam. After the hook embraces the beam, the connecting block formed by the first and second connecting members firmly fixes the hook to the beam, reducing the gap between the hook and the beam and the noise caused by friction between the hook and the beam, thereby improving comfort. At the same time, the encircling structure greatly improves the connection strength between the hook and the beam, improves the stability of the hook, and is extremely difficult to fall off. The first and second connecting members are detachable structures, making them easy to disassemble and assemble. This hanging hook is suitable for use on functional sofas, leisure sofas, office chairs and stools, and car seats.

[0010] Preferably, the first and second connecting members are respectively a first elliptical block and a second elliptical block. When the first elliptical block and the second elliptical block are connected to form the elliptical connecting block, a square bayonet is formed between the first annular buckle and the second annular buckle to cooperate with the crossbeam, and an elliptical latch hole is formed on the elliptical connecting block to connect with the elastic member. In this technical solution, the first and second connecting members are respectively a first elliptical block and a second elliptical block. The elliptical connecting block formed by the first and second elliptical blocks abuts against the crossbeam, which can reduce friction with the inner wall of the crossbeam and reduce the occurrence of abnormal noise. At the same time, after the elastic member is connected to the elliptical latch hole, it can rebound up and down through the elliptical latch hole, making the spring rebound more freely, achieving a better shock absorption effect and improving comfort.

[0011] Preferably, a male tenon or female tenon is constructed on the inner side of the side end of the first elliptical block, and a female tenon or male tenon is constructed on the inner side of the side end of the second elliptical block to lock radially therewith. In this technical solution, a male tenon is provided on one side of the inner side end of the first and second elliptical blocks, and a female tenon is provided on the other side. The cooperation of the male and female tenons can radially lock the first and second elliptical blocks, and can firmly fix the hook on the crossbeam. When the first and second elliptical blocks need to be separated, they are radially offset and slightly pulled apart from both sides to separate the male and female tenons. The first and second elliptical blocks can be quickly separated to remove the hook from the crossbeam.

[0012] Preferably, the first ring buckle is located above the second ring buckle, wherein the first ring buckle includes a first side wall, a first fitting wall, and a first inclined wall connected to each other, and the first elliptical block is formed below the end of the first inclined wall; the second ring buckle includes a second side wall, a second fitting wall, and a second inclined wall connected to each other, and the second elliptical block is formed above the end of the second inclined wall; an elastic wall is formed between the first side wall and the second side wall, and when the first elliptical block and the second elliptical block are disassembled, the first ring buckle and the second ring buckle can be relatively opened under the action of an external force, and the elastic wall is in a bent state. In this technical solution, the provision of the elastic wall can enable the first ring buckle and the second ring buckle to bend relative to each other, and by stretching at this point, the purpose of opening the hook is achieved. It has strong fatigue resistance and is not easy to damage. The middle part of the elastic wall is slightly concave inward to facilitate the bending of the elastic wall.

[0013] Preferably, the inner walls of the first and second fitting walls are longitudinally provided with positioning pins that can extend into the crossbeam to secure the hook to the crossbeam. The outer ends of these positioning pins are formed with guiding slopes that face toward the elastic wall. In this technical solution, the upper and lower positioning pins can be embedded in the crossbeam (designated holes), further securing the hook to the crossbeam, significantly improving its stability and preventing it from moving forward, backward, or up or down. Furthermore, after the first and second elliptical blocks are separated, the guiding slopes guide the designated holes to quickly move the hook outward and away from the crossbeam.

[0014] Preferably, a first escape opening is formed between the first fitting wall and the first slanted wall, which is adapted to engage with the second elliptical block. A second escape opening is formed between the second fitting wall and the second slanted wall, which is adapted to engage with the first elliptical block. In this technical solution, the formation of the first and second escape openings facilitates the vertical movement of the first and second elliptical blocks to connect or separate the male and female tenons.

[0015] Preferably, a reinforcement block is formed at the lower end of the second fitting wall, and a connection hole is formed on the reinforcement block. In this technical solution, the reinforcement block improves the structural strength of the hook, and the connection hole on the reinforcement block can be used to fix the fabric cover.

[0016] Preferably, the hook is made of PP material, with the first and second ring buckles integrally formed. In this technical solution, the hook is entirely made of PP material, which offers high structural strength, good wear resistance and toughness, resulting in improved fatigue resistance, strong impact resistance, and high dimensional stability. Furthermore, this material offers low friction when assembled with the crossbeam, effectively reducing abnormal noise.

[0017] A seat frame, characterized in that it includes a frame and a hanging hook described in any one of items 5 to 7, the frame includes side frames arranged on both sides, and a front beam and a rear beam arranged between the side frames on both sides; a plurality of positioning holes are correspondingly opened at the upper and lower ends of the front beam and the rear beam, and a plurality of hanging hooks are correspondingly arranged, and the positioning nails are adapted to be installed in the positioning holes to correspondingly arrange the plurality of hanging hooks on the front beam and the rear beam; a serpentine spring is provided between the corresponding hanging hooks, and the two ends of the serpentine spring are connected to the hanging hooks through the elliptical card hole, and the two ends of the serpentine spring form a bending section for buckling the side end of the elliptical connecting block.

[0018] In this technical solution, multiple hooks encircle the front and rear beams, locked to them via positioning pins and positioning holes in the beams. Serpentine springs connect between the corresponding hooks, providing elastic support and ensuring excellent comfort and shock absorption for the entire seat frame. The friction between the hooks and the beams is minimal, and the hooks are securely fixed, significantly reducing any unwanted noise and enhancing comfort. The curved ends of the serpentine springs effectively prevent the ends from detaching from the elliptical connecting blocks.

[0019] Preferably, fixed frame bars and fixed straight bars are laid above the several serpentine springs, and the fixed frame bars and fixed straight bars are tied and fixed to the several serpentine springs by connecting pieces. In this technical solution, the fixed frame bars and fixed straight bars can reinforce multiple serpentine springs, and the existing frame bars use traditional paper-wrapped steel wire, which is easily affected by moisture, resulting in the product being not firmly fixed and falling off. The paper is bonded to the steel wire with glue, and the glue contains formaldehyde; the fixed frame bars and fixed frame bars use PVC plastic-wrapped steel wire (PVC is wrapped with 3MM diameter steel bars), which is wrapped by melting plastic, without using glue, and will not be affected by moisture or fall off, thus extending the fixing time. In addition, the entire frame bar adopts a ring-shaped design to connect multiple serpentine springs together, which makes the reinforcement effect more obvious during use, improves the performance of the serpentine springs, and makes the sitting feel more comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is a schematic diagram of the three-dimensional structure of a hanging hook.

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of a hanging hook from another perspective.

[0022] Figure 3 This is a schematic diagram of the side structure of a hanging hook.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of another hanging hook.

[0024] Figure 5 Schematic diagram of the arrangement of reinforcement blocks.

[0025] Figure 6 This is a schematic diagram of the connection between the hanging hook, serpentine spring and fixed frame strip on the seat frame.

[0026] Figure 7 for Figure 6 Enlarged schematic diagram of point A in the middle.

[0027] Figure 8 for Figure 6 Enlarged schematic diagram of point B in the middle.

[0028] Figure 9 Schematic diagram of the layout of the positioning holes on the seat frame.

[0029] Figure 10 Schematic diagram of the three-dimensional structure of the fixed frame. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more, unless expressly limited otherwise.

[0033] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature. Example 1:

[0035] like Figures 1 to 5 A hanging hook is shown, which includes a first ring buckle 1 and a second ring buckle 2 connected at one end, and the other ends of the first ring buckle 1 and the second ring buckle 2 are respectively provided with a first connecting member and a second connecting member, and the first connecting member and the second connecting member are configured to be detachably connected; when the first connecting member and the second connecting member are connected to form a connecting block, a bayonet that cooperates with the crossbeam is formed between the first connecting member and the second connecting member, the inner end of the connecting block abuts against the inner wall of the crossbeam, and a bayonet hole connected to the elastic member is formed on the connecting block.

[0036] In the above technical solution, the hanging hook is designed as a ring buckle, and adopts a two-stage first and second ring buckle structure to encircle the beam. After the hook embraces the beam, the connecting block formed by the first and second connecting members firmly fixes the hook to the beam, reducing the gap between the hook and the beam and the noise caused by friction between the hook and the beam, thereby improving comfort. At the same time, the encircling structure greatly improves the connection strength between the hook and the beam, improves the stability of the hook, and is extremely difficult to fall off. The first and second connecting members are detachable structures, making them easy to disassemble and assemble. This hanging hook is suitable for use on functional sofas, leisure sofas, office chairs and stools, and car seats.

[0037] Furthermore, the first connecting member and the second connecting member are respectively the first elliptical block 3 and the second elliptical block 4. When the first elliptical block 3 and the second elliptical block 4 are connected to form an elliptical connecting block, a square bayonet 5 that cooperates with the crossbeam is formed between the first ring buckle 1 and the second ring buckle 2, and an elliptical bayonet hole 6 connected to the elastic member is formed on the elliptical connecting block.

[0038] In this technical solution, the first connecting member and the second connecting member are respectively the first elliptical block and the second elliptical block. The elliptical connecting block formed by the first elliptical block and the second elliptical block abuts against the crossbeam, which can reduce the friction with the inner wall of the crossbeam and reduce the occurrence of abnormal noise. At the same time, after the elastic member is connected to the elliptical card hole, it can rebound up and down through the elliptical card hole, making the spring rebound more freely, achieving better shock absorption effect and improving comfort.

[0039] Furthermore, a male tenon 7 or a female tenon 8 is constructed on the inner side of the side end of the first elliptical block 3, and a female tenon 8 or a male tenon 7 is constructed on the inner side of the side end of the second elliptical block 4 to be radially locked therewith. In this technical solution, a male tenon is provided on one side of the inner side end of the first and second elliptical blocks, and a female tenon is provided on the other side. The cooperation of the male and female tenons can radially lock the first and second elliptical blocks, and can firmly fix the hook on the beam. When the first and second elliptical blocks need to be separated, they are radially offset and slightly pulled apart from both sides to separate the male and female tenons. The first and second elliptical blocks can be quickly separated to remove the hook from the beam.

[0040] Furthermore, the first ring buckle 1 is located above the second ring buckle 2, wherein the first ring buckle 1 includes a first side wall 9, a first fitting wall 10, and a first inclined wall 11 connected to each other, and the first elliptical block 3 is formed below the end of the first inclined wall 11; the second ring buckle 2 includes a second side wall 12, a second fitting wall 13, and a second inclined wall 14 connected to each other, and the second elliptical block 4 is formed above the end of the second inclined wall 14; an elastic wall 15 is formed between the first side wall 9 and the second side wall 12. When the first elliptical block 3 and the second elliptical block 4 are disassembled, the first ring buckle 1 and the second ring buckle 2 can be relatively opened under the action of an external force, and the elastic wall is in a bent state. In this technical solution, the provision of the elastic wall allows the first ring buckle and the second ring buckle to bend relative to each other, and by stretching at this point, the purpose of opening the hook is achieved. It has strong fatigue resistance and is not easy to damage. The middle part of the elastic wall is slightly concave inward to facilitate the bending of the elastic wall.

[0041] Furthermore, positioning pins 17 are longitudinally provided on the inner walls of the first and second fitting walls 10, 13. These pins 17 can be inserted into the crossbeam to position the hook on the crossbeam. The outer ends of these pins 17 are formed with guiding ramps 18, facing toward the elastic wall 15. In this technical solution, the upper and lower positioning pins can be embedded in the crossbeam (designated holes), further securing the hook on the crossbeam, significantly improving its stability and preventing it from moving forward, backward, or up or down. Furthermore, after the first and second elliptical blocks are separated, the guiding ramps guide the designated holes to quickly move the hook outward and away from the crossbeam.

[0042] Furthermore, a first escape opening 19 is formed between the first fitting wall 10 and the first sloping wall 11, which cooperates with the second elliptical block 4. A second escape opening 20 is formed between the second fitting wall 13 and the second sloping wall 14, which cooperates with the first elliptical block 3. In this technical solution, the formation of the first and second escape openings facilitates the vertical movement of the first and second elliptical blocks to connect or separate the male and female tenons.

[0043] Furthermore, a reinforcement block 21 is formed at the lower end of the second fitting wall 13, and a connection hole 22 is opened on the reinforcement block 21. In this technical solution, the reinforcement block improves the structural strength of the hook, and the connection hole on the reinforcement block can be used to fix the fabric cover.

[0044] Furthermore, the hook is made of PP material, and the first ring buckle 1 and the second ring buckle 2 are integrally formed. In this technical solution, the hook is made entirely of PP material, which has high structural strength, good wear resistance and toughness, resulting in better fatigue resistance, strong impact resistance, and high dimensional stability. In addition, this material has low friction when assembled with the crossbeam, which can effectively reduce abnormal noise.

[0045] It should be noted here that, Figure 4 Another type of hanging hook is shown in the figure. The first elliptical block and the second elliptical block are connected to the Figure 1 The arrangement in the figure is relatively laterally staggered. Example 2:

[0046] like Figures 6-10 A seat frame shown includes a frame and a hanging hook in Example 1, wherein the frame includes side frames 23 arranged on both sides, and a front beam and a rear beam arranged between the side frames 23 on both sides; a plurality of positioning holes 24 are correspondingly opened at the upper and lower ends of the front beam and the rear beam, and a plurality of hanging hooks are correspondingly arranged, and the positioning nails 17 are adapted to be installed in conjunction with the positioning holes 24 to arrange the plurality of hanging hooks correspondingly on the front beam and the rear beam; a serpentine spring 25 is provided between the corresponding hanging hooks, and the two ends of the serpentine spring 25 pass through the elliptical card hole 6 to be connected to the hanging hook, and the two ends of the serpentine spring 25 form a bending section 26 for buckling the side end of the elliptical connecting block.

[0047] In this technical solution, multiple hooks encircle the front and rear beams, locked to them via positioning pins and positioning holes in the beams. Serpentine springs connect between the corresponding hooks, providing elastic support and ensuring excellent comfort and shock absorption for the entire seat frame. The friction between the hooks and the beams is minimal, and the hooks are securely fixed, significantly reducing any unwanted noise and enhancing comfort. The curved ends of the serpentine springs effectively prevent the ends from detaching from the elliptical connecting blocks.

[0048] Furthermore, fixed frame bars 27 and fixed straight bars 29 are laid above the multiple serpentine springs 25. These fixed frame bars 27 and fixed straight bars 29 are tied and secured to the multiple serpentine springs 25 via fixing sleeves 28. In this technical solution, the fixed frame bars and fixed straight bars reinforce multiple serpentine springs. Existing frame bars use traditional paper-wrapped steel wire, which is susceptible to moisture, resulting in loose fixation and potential detachment. The paper is bonded to the steel wire with glue, which contains formaldehyde. The fixed frame bars and fixed straight bars use PVC-coated steel wire (PVC wrapped around 3mm diameter steel bars). This is achieved by wrapping the steel wire with melted plastic, eliminating the need for glue. This prevents moisture and detachment, extending the duration of the fixation. Furthermore, the ring-shaped design of the entire frame bar connects the multiple serpentine springs together, significantly strengthening the reinforcement during use, improving the performance of the serpentine springs, and providing a more comfortable seat.

[0049] In this specific embodiment, in order to solve the problem of abnormal noise caused by the instability of the hook of the elastic component in the existing seat, which in turn causes discomfort and the risk of the hook falling off, the above-mentioned solution designs the hanging hook into a ring buckle form, and adopts a two-section first ring buckle and second ring buckle structure, which can embrace the beam. After the hook embraces the beam, the hook can be tightly fixed to the beam through the connecting block formed by the first connecting member and the second connecting member, as well as the positioning pins and the positioning holes on the beam, thereby reducing the gap between the hook and the beam, reducing the abnormal noise caused by friction between the hook and the beam, and improving comfort. At the same time, the embracing structure can greatly improve the connection strength between the hook and the beam, improve the stability of the hook, and is extremely difficult to fall off.

[0050] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A hanging hook, characterized by: The hook comprises a first ring buckle (1) and a second ring buckle (2) connected at one end, and the other ends of the first ring buckle (1) and the second ring buckle (2) are respectively provided with a first connecting member and a second connecting member, and the first connecting member and the second connecting member are configured to be detachably connected; when the first connecting member and the second connecting member are connected to form a connecting block, a bayonet that cooperates with the crossbeam is formed between the first connecting member and the second connecting member, the inner end of the connecting block abuts against the inner wall of the crossbeam, and a bayonet hole connected to the elastic member is formed on the connecting block.

2. The hanging hook according to claim 1, characterized in that: The first connecting member and the second connecting member are respectively a first elliptical block (3) and a second elliptical block (4). When the first elliptical block (3) and the second elliptical block (4) are connected to form an elliptical connecting block, a square bayonet (5) that cooperates with the crossbeam is formed between the first annular buckle (1) and the second annular buckle (2), and an elliptical bayonet hole (6) that is connected to the elastic member is formed on the elliptical connecting block.

3. The hanging hook according to claim 2, characterized in that: The inner side of the side end of the first elliptical block (3) is constructed with a male tenon (7) or a female tenon (8), and the inner side of the side end of the second elliptical block (4) is adapted to be constructed with a female tenon (8) or a male tenon (7) radially locked therewith.

4. The hanging hook according to claim 2, characterized in that: The first ring buckle (1) is located above the second ring buckle (2), wherein the first ring buckle (1) includes a first side wall (9), a first fitting wall (10) and a first inclined wall (11) connected to each other, and the first elliptical block (3) is formed below the end of the first inclined wall (11); the second ring buckle (2) includes a second side wall (12), a second fitting wall (13) and a second inclined wall (14) connected to each other, and the second elliptical block (4) is formed above the end of the second inclined wall (14); an elastic wall (15) is formed between the first side wall (9) and the second side wall (12), and when the first elliptical block (3) and the second elliptical block (4) are disassembled, the first ring buckle (1) and the second ring buckle (2) can be relatively opened under the action of an external force, and the elastic wall is in a bent state.

5. The hanging hook according to claim 4, characterized in that: Positioning pins (17) are longitudinally provided on the inner walls of the first fitting wall (10) and the second fitting wall (13), and the positioning pins (17) can extend into the crossbeam to position the hook on the crossbeam; and a guiding inclined surface (18) facing the elastic wall (15) is formed on the outer end of the positioning pin (17).

6. The hanging hook according to claim 5, characterized in that: A first avoidance opening (19) cooperating with the second elliptical block (4) is formed between the first fitting wall (10) and the first inclined wall (11), and a second avoidance opening (20) cooperating with the first elliptical block (3) is formed between the second fitting wall (13) and the second inclined wall (14).

7. The hanging hook according to claim 6, characterized in that: A reinforcement block (21) is formed at the lower end of the second fitting wall (13), and a connection hole (22) is provided on the reinforcement block (21).

8. The hanging hook according to claim 1, characterized in that: The hook is made of PP material, and the first ring buckle (1) and the second ring buckle (2) are integrally formed.

9. A seat frame, characterized in that: The invention comprises a frame and a hanging hook as claimed in any one of claims 5 to 7, wherein the frame comprises side frames (23) arranged on both sides, and a front beam and a rear beam arranged between the side frames (23) on both sides; a plurality of positioning holes (24) are correspondingly opened at the upper end and the lower end of the front beam and the rear beam, and a plurality of hanging hooks are correspondingly arranged, and the positioning pins (17) are adapted to be installed with the positioning holes (24) so ​​that the plurality of hanging hooks are correspondingly arranged on the front beam and the rear beam; a serpentine spring (25) is provided between the corresponding hanging hooks, and the two ends of the serpentine spring (25) pass through the elliptical clamping hole (6) to be connected with the hanging hook, and the two ends of the serpentine spring (25) form a bending section (26) for buckling the side end of the elliptical connecting block.

10. A seat frame according to claim 9, characterized in that: A fixed frame strip (27) and a fixed straight strip (29) are laid above the plurality of serpentine springs (25), and the fixed frame strip (27) and the fixed straight strip (29) are tied and fixed to the plurality of serpentine springs (25) via a fixing sleeve (28).

Images