Backward tilting leisure structure of chassis

Abstract

The utility model discloses a chassis backward tilting leisure structure, which comprises an arm-chair connecting piece, a rotating support, a first support arm, a chair surface connecting piece and a second support arm, the bottom of one side of the arm-chair connecting piece is fixedly connected with a rear box cover through a bolt, and the rear box cover is fixedly connected with a front box cover through a bolt. The seat backrest and the seat surface are fixed through the arm-chair connecting piece and the seat surface connecting piece respectively, the arm-chair connecting piece and the seat surface connecting piece are matched with the second supporting arm and the first supporting arm to form a parallelogram connecting structure after being installed and fixed, the structure is simple, operation is stable, an original single-shaft rotating structure is replaced, the stress form is optimized, and the structure is simple. The stability of pitching adjustment of the seat is guaranteed; when the backrest of the seat is stressed to turn over, the arm-chair connecting piece tilts backwards and rotates, at the moment, the second supporting arm and the first supporting arm rotate in parallel, the seat surface connecting piece descends in parallel, the seat surface does not turn over in the descending process, the seat surface is prevented from pressing legs, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of adjustable seats, in particular to a chassis rear-tilting and reclining structure. Background Art

[0002] A seat with an adjustable backrest is a seat whose backrest angle can be adjusted according to the needs of the user. This type of seat is flexibly designed to meet the needs of different people, help users maintain a comfortable sitting posture, and reduce fatigue caused by sitting for a long time to work or study. It is a very practical seat design and is widely welcomed by people. However, the connection structure between the seat back and the cushion is mostly connected by a rotating shaft. The force-bearing structure of the single-axis connection is simple, and the connection part is prone to breakage during the rotation process, affecting the stability of the seat pitch adjustment. At the same time, the seat surface will produce a flip inclination angle during the tilt and rotation of the backrest, and the tilted seat surface will put pressure on the legs, affecting the user experience. Therefore, it is necessary to design a chassis rear tilt and free structure. Utility Model Content

[0003] The purpose of the utility model is to provide a chassis rear-tilt and recline structure to solve the problem that the connection structure between the seat back and the cushion in the existing adjustable seat back is mostly connected by a rotating shaft, the force-bearing structure of the single-axis connection is simple, and the connecting part is prone to breakage during the rotation process, which affects the stability of the seat pitch adjustment. At the same time, the seat surface will produce a flip inclination angle during the tilt and recline rotation of the backrest, and the inclined seat surface will put pressure on the legs, affecting the user experience.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a chassis rearward tilting and relaxing structure, comprising a backrest connecting member, a rear box cover, a front box cover, a rotating support, a first arm, a first connecting ring, a seat surface connecting member, a connecting cross bar, a second connecting ring, a second arm and a connecting rotating wheel, wherein the bottom of one side of the backrest connecting member is fixedly connected to the rear box cover by bolts, and the front box cover is fixedly connected to the rear box cover by bolts, a first grid is injection molded in the backrest connecting member, and a limit card block is symmetrically arranged at the bottom of the backrest connecting member, and the limit card block is matched and connected in the limit card slot, and the limit card slot is symmetrically opened at the top of the front box cover; rotating supports are symmetrically arranged on both sides of the bottom of the backrest connecting member, and a first arm is rotatably connected to the rotating support, one end of the first arm is rotatably connected to the first connecting ring, and the first connecting ring is fixed to the seat surface connecting member, a connecting cross bar is arranged between the seat surface connecting members, and a second connecting ring is arranged at the bottom of the seat surface connecting member, the second connecting ring is rotatably connected to the second arm, and one end of the second arm is rotatably connected to the front box cover.

[0005] Preferably, a first connection hole is evenly opened on the top of one side of the backrest connector, and a second connection hole is symmetrically opened on the bottom of one side of the backrest connector. A decorative panel is fixedly connected to the backrest connector by threads, and the decorative panel is attached to the rear box cover.

[0006] Preferably, side notches are symmetrically provided on two adjacent sides of the backrest connector.

[0007] Preferably, a cover protrusion is provided at the center of one side of the front box cover, and a circular hole is opened at the center of one side of the cover protrusion.

[0008] Preferably, the rear box cover is symmetrically provided with wire outlet slots.

[0009] Preferably, a second grid is injection molded in the seat seat connector.

[0010] Preferably, one side of the front box cover is cooperatively connected with a connecting wheel.

[0011] The utility model provides a chassis rear-tilt and recline structure, which has the following advantages: the seat back and the seat seat are respectively fixed by a backrest connecting member and a seat seat connecting member, and the backrest connecting member and the seat seat connecting member are installed and fixed to cooperate with the second arm and the first arm to form a parallelogram connection structure, which replaces the original single-axis rotation structure, optimizes the force form, and ensures the stability of the seat pitch adjustment; when the seat back is forced to flip during the seat pitch adjustment, the backrest connecting member tilts and rotates backward, and at this time the second arm and the first arm rotate in parallel, so that the seat seat connecting member descends in parallel, and the seat seat will not flip during the descending process, avoiding the seat surface from exerting pressure on the legs, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 This is the overall structural front view of the utility model;

[0015] Figure 3 This is a rear view of the overall structure of the utility model;

[0016] Figure 4 It is a three-dimensional diagram of part of the structure of the utility model;

[0017] Figure 5 It is a three-dimensional diagram of the overall structure in Example 2 of the utility model;

[0018] Figure 6 This is a schematic diagram of the opening position of the wire outlet slot in Example 2 of the utility model.

[0019] In the figure: 1. backrest connector; 2. rear box cover; 3. front box cover; 4. first grid; 5. first connecting hole; 6. second connecting hole; 7. side notch; 8. limit block; 9. limit slot; 10. lid protrusion; 11. circular hole; 12. rotating support; 13. first arm; 14. first connecting ring; 15. seat surface connector; 16. connecting cross bar; 17. second connecting ring; 18. second arm; 19. outlet slot; 20. second grid; 21. connecting wheel; 40. backrest connector; 41. closed box cover; 42. connecting box cover; 43. lid depression; 44. cushion connector; 100. decorative panel. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-4 , an embodiment provided by the utility model:

[0023] Embodiment 1: A chassis rearward tilting leisure structure, comprising a backrest connecting member 1, a rear box cover 2, a front box cover 3, a rotating support 12, a first arm 13, a first connecting ring 14, a seat surface connecting member 15, a connecting cross bar 16, a second connecting ring 17, a second arm 18 and a connecting rotating wheel 21, the bottom of one side of the backrest connecting member 1 is fixedly connected to the rear box cover 2 by bolts, and the front box cover 3 is fixedly connected to the rear box cover 2 by bolts, a first grid 4 is injection molded in the backrest connecting member 1, and a limit card block 8 is symmetrically arranged at the bottom of the backrest connecting member 1, and the limit card block 8 is matched and connected in the limit card slot 9, and the limit card slot 9 is symmetrically opened on the top of the front box cover 3; the backrest connecting member 1 is fixedly connected to the decorative panel 10 by threads 0, and the decorative panel 100 is attached to the rear box cover 2, the decorative panel 100 is a panel structure without structural function, connected to the backrest connecting member 1 as the tail plate to play a decorative role, the bottom of the backrest connecting member 1 is symmetrically provided with rotating supports 12 on both sides, the rotating support 12 is rotatably connected with a first arm 13, one end of the first arm 13 is rotatably connected with a first connecting ring 14, the first connecting ring 14 is fixed to the seat surface connecting member 15, a connecting cross bar 16 is provided between the seat surface connecting members 15, the connecting cross bar 16 is connected between the seat surface connecting members 15, the connecting cross bar 16 is used to splice the seat surface connecting members 15 on both sides into a whole, and at the same time enhance the structural stability of the seat surface connecting member 15, and the seat surface connecting member A second connecting ring 17 is provided at the bottom of 15, and the second connecting ring 17 is rotatably connected to the second arm 18, and one end of the second arm 18 is rotatably connected to the front box cover 3. A first connecting hole 5 is evenly opened on the top of one side of the backrest connecting member 1, and the first connecting hole 5 is used as a connecting hole for the seat back, and a second connecting hole 6 is symmetrically opened on the bottom of one side of the backrest connecting member 1, and side notches 7 are symmetrically opened on the adjacent two sides of the backrest connecting member 1, and the side notches 7 are used to install the armrests. A cover protrusion 10 is provided at the center of one side of the front box cover 3, and the cover protrusion 10 is arranged on the front box cover 3, which plays a role in enriching the sense of hierarchy of the structure and making the structure more three-dimensional visually. A circular hole 11 is opened at the center of one side of the cover protrusion 10 , a circular hole 11 is provided as a mounting hole for the gas rod, a wire outlet notch 19 is symmetrically provided on the rear box cover 2, a second grid 20 is injection molded in the seat surface connector 15, a connecting wheel 21 is connected to one side of the front box cover 3, and the connecting wheel 21 plays a role in adjusting the reclining force of the chassis, the backrest connector 1 and the seat surface connector 15 are both processed by mold injection molding, and after the processing is completed, a staggered structure of the first grid 4 and the second grid 20 is formed in the backrest connector 1 and the seat surface connector 15, which ensures the material strength of the backrest connector 1 and the seat surface connector 15 without affecting the main appearance of the backrest connector 1 and the seat surface connector 15, and improves the structural stability of the backrest connector 1 and the seat surface connector 15;

[0024] See also Figure 5-6 , an embodiment provided by the utility model:

[0025] Embodiment 2: A chassis rear-tilt leisure structure, comprising a backrest connector 40, a closed box cover 41, a connecting box cover 42, a first grid 4, a first connecting hole 5, a second connecting hole 6, a side notch 7, a cover surface depression 43, a circular hole 11, a rotation support 12, a first arm 13, a first connecting ring 14, a cushion connector 44, a connecting cross bar 16, a second connecting ring 17, a second arm 18, a wire outlet notch 19, a second grid 20 and a connecting wheel 21, the top of one side of the backrest connector 40 is evenly provided with the first connecting hole 5, and the bottom of one side of the backrest connector 40 is symmetrically provided with the second connecting hole 6, the adjacent two sides of the backrest connector 40 are symmetrically provided with the side notch 7, the first grid 4 is injection molded in the backrest connector 40, the bottom of the backrest connector 40 is symmetrically provided with a rotation support 12, the rotation support 12 is rotatably connected to the connecting box cover 42, and the connecting A closed box cover 41 is fixed to the connecting box cover 42 by bolts, and a wire outlet notch 19 is provided on the closed box cover 41. A cover surface recess 43 is provided on one side of the connecting box cover 42, and a circular hole 11 is provided at the center of the cover surface recess 43. A first arm 13 is fixedly sleeved on the rotating support 12, and a first connecting ring 14 is rotatably connected to one end of the first arm 13, and the first connecting ring 14 is fixed to the cushion connecting member 44. A connecting cross bar 16 is provided between the cushion connecting members 44, and a second connecting ring 17 is provided at the bottom of the cushion connecting member 44, and the second connecting ring 17 is rotatably connected to the second arm 18, and one end of the second arm 18 is rotatably connected to the connecting box cover 42, and a second grid 20 is injection-molded in the cushion connecting member 44, and a connecting wheel 21 is matched and connected to one side of the second arm 18, and one end of the connecting wheel 21 is connected to the connecting box cover 42 by threaded matching;

[0026] Specifically, when in use, first fix the rear box cover 2 to the front box cover 3 by bolts, and fix the backrest connector 1 to the rear box cover 2 by bolts, so that the limit block 8 is matched and connected in the limit slot 9, and then fix the backrest connector 1 and the seat surface connector 15 to the seat back and the seat surface respectively. After the backrest connector 1 and the seat surface connector 15 are installed and fixed, they cooperate with the second arm 18 and the first arm 13 to form a parallelogram connection structure. When the seat back is flipped under force, the backrest connector 1 tilts and rotates backward. At this time, the second arm 18 and the first arm 13 rotate in parallel, so that the seat surface connector 15 descends in parallel. The seat surface will not flip during the descending process, avoiding the chair surface from hitting the legs. Compression is generated, which improves the user experience; as needed, the backrest connector 1, rear box cover 2, front box cover 3 and seat surface connector 15 in Example 1 can be replaced with a backrest connector 40, a closed box cover 41, a connecting box cover 42 and a cushion connector 44. After replacement, the backrest connector 40 and the cushion connector 44 are respectively fixed on the seat back and the seat surface, and the backrest connector 40 and the cushion connector 44 cooperate with the second arm 18 and the first arm 13 to form a new parallelogram connection structure in Example 2. When the seat back is flipped under force, the backrest connector 40 tilts and rotates backward. At this time, the second arm 18 and the first arm 13 rotate in parallel, so that the cushion connector 44 descends in parallel.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A chassis rearward tilting leisure structure, comprising a backrest connecting member (1), a rear box cover (2), a front box cover (3), a rotating support (12), a first support arm (13), a first connecting ring (14), a seat surface connecting member (15), a connecting cross bar (16), a second connecting ring (17), a second support arm (18) and a connecting rotating wheel (21), Features: The bottom of one side of the backrest connecting member (1) is fixedly connected to the rear box cover (2) by bolts, and the rear box cover (2) is fixedly connected to the front box cover (3) by bolts. A first grid (4) is injection-molded in the backrest connecting member (1). A limit block (8) is symmetrically arranged at the bottom of the backrest connecting member (1). The limit block (8) is matched and connected in a limit slot (9). The limit slot (9) is symmetrically arranged on the top of the front box cover (3). Rotation supports (12) are symmetrically arranged on both sides of the bottom of the backrest connecting member (1). A first support arm (13) is rotatably connected to the rotatable support (12), one end of the first support arm (13) is rotatably connected to a first connecting ring (14), the first connecting ring (14) is fixed to a seat surface connecting member (15), a connecting cross bar (16) is arranged between the seat surface connecting members (15), and a second connecting ring (17) is arranged at the bottom of the seat surface connecting member (15), the second connecting ring (17) is rotatably connected to a second support arm (18), and one end of the second support arm (18) is rotatably connected to the front box cover (3).

2. A chassis rear tilting and relaxing structure according to claim 1, Features: The top of one side of the backrest connecting member (1) is evenly provided with a first connecting hole (5), and the bottom of one side of the backrest connecting member (1) is symmetrically provided with a second connecting hole (6), and the backrest connecting member (1) is fixedly connected with a decorative panel (100) by means of threads, and the decorative panel (100) is attached to the rear box cover (2).

3. The chassis rear tilting and relaxing structure according to claim 2, Features: Side notches (7) are symmetrically provided on two adjacent sides of the backrest connecting piece (1).

4. The chassis rear tilting and relaxing structure according to claim 1, Features: A cover protrusion (10) is provided at the center of one side of the front box cover (3), and a circular hole (11) is opened at the center of one side of the cover protrusion (10).

5. The chassis rear tilting leisure structure according to claim 1, Features: The rear box cover (2) is symmetrically provided with wire outlet notches (19).

6. The chassis rear tilting and relaxing structure according to claim 1, Features: A second grid frame (20) is injection molded in the seat surface connecting piece (15).

7. The chassis rear tilting and relaxing structure according to claim 4, Features: One side of the front box cover (3) is cooperatively connected with a connecting wheel (21).

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