Torsion spring structure and automobile seat with same

Abstract

The invention relates to the technical field of torsional spring structures, and provides a torsional spring structure which comprises a rotating shaft body, a fixed shaft body and a first elastic piece. The rotating shaft body is of an annular structure and arranged on the fixed shaft body in a sleeving mode, and the rotating shaft body is rotationally connected with the fixed shaft body; the first elastic piece is used for resetting the rotated rotating shaft body, and the two ends of the first elastic piece are fixedly connected with the rotating shaft body and the fixed shaft body correspondingly. According to the technical scheme, the problem that in the prior art, a channel in a vehicle is occupied by articles, and the riding experience of passengers is affected is solved.

Description

Technical Field

[0001] The invention relates to the technical field of torsion spring structures, and in particular to a torsion spring structure and a car seat having the structure. Background Art

[0003] People usually carry items when riding on a bus. As the number of items on the vehicle gradually increases, the aisles inside the vehicle will be crowded, making it difficult for passengers who have just entered the vehicle or want to get off to move within the vehicle, affecting the passengers' riding experience. Summary of the invention

[0004] The present invention provides a torsion spring structure and a car seat having the structure, which solves the problem in the related art that the aisle in the car is occupied by objects, affecting the riding experience of passengers.

[0005] The technical solution of the present invention is as follows: A torsion spring structure includes a rotating shaft, a fixed shaft, and a first elastic member. The rotating shaft is an annular structure and is sleeved on the fixed shaft. The rotating shaft is rotatably connected to the fixed shaft. The first elastic member is used to reset the rotating shaft after rotation. The two ends of the first elastic member are respectively fixedly connected to the rotating shaft and the fixed shaft.

[0006] Furthermore, the fixed shaft body includes a first fixed end, a second fixed end, and a connecting rod body, the first fixed end and the second fixed end are respectively fixedly connected to the two ends of the connecting rod body, the rotating shaft body is located between the first fixed end and the second fixed end, and the first elastic member is a scroll structure.

[0007] Furthermore, the rotating shaft body includes a plurality of rotating rings, each of which has a cross-section of a "U"-shaped structure, and each of the rotating rings is arranged in sequence along a linear direction and abuts against each other; a plurality of first elastic members are provided, each of which is located respectively between adjacent rotating rings, and the head and tail ends of each first elastic member are respectively clamped to connect each rotating ring and the connecting rod body.

[0008] Furthermore, auxiliary bearings are provided between the first fixed end and the rotating ring adjacent thereto, and between the second fixed end and the rotating ring adjacent thereto; the cross section of the first fixed end is a horizontal "T"-shaped structure, and the cross section of the second fixed end is a "3"-shaped structure.

[0009] Furthermore, the first fixed end and each rotating ring are provided with a connecting ring groove, the second fixed end and one end of each rotating ring away from the connecting ring groove are provided with a connecting snap ring, and each connecting snap ring abuts against each connecting ring groove one by one.

[0010] A car seat comprises a torsion spring structure and a seat body, wherein the seat body comprises a cushion plate, a flip seat and a accommodating cavity, wherein the cushion plate is located above the accommodating cavity, the flip seats are symmetrically and evenly distributed around a fixed shaft body, the fixed shaft body is fixedly connected to the flip seat, the rotating shaft body is fixedly connected to the cushion plate, and an auxiliary flip structure is provided between the accommodating cavity and the cushion plate.

[0011] Furthermore, the auxiliary flipping structure includes a flipping shaft and a second elastic member. The flipping shaft is rotatably connected to the bottom of the seat cushion plate. The second elastic member includes an abutment portion and a sleeve portion. The abutment portion abuts against the seat cushion plate, and both ends of the abutment portion have a sleeve portion. Each of the sleeve portions is sleeved on the flipping shaft and is integrally formed with the abutment portion.

[0012] Furthermore, the projection surface of the abutment portion on the horizontal plane is a "U"-shaped structure, the seat cushion plate is provided with a linkage frame for mutual engagement with the abutment portion, and the projection surface of the linkage frame in the axial direction of the flip axis is an "L"-shaped structure.

[0013] Furthermore, the projection surface of the cushion plate in the axial direction of the rotating shaft is a horizontal "L"-shaped structure, and the thickness of the end of the cushion plate close to the rotating shaft is greater than the thickness of the end of the cushion plate away from the rotating shaft.

[0014] Furthermore, the linkage frame is provided with an expansion inclined surface, and both the expansion inclined surface and the linkage frame abut against the abutment portion. The working principle and beneficial effects of the present invention are: The torsion spring structure in the present invention mainly includes a rotating shaft, a fixed shaft, and a first elastic member. The rotating shaft is an annular structure and is sleeved on the fixed shaft, and the rotating shaft and the fixed shaft are rotatably connected. The first elastic member is located between the rotating shaft and the fixed shaft, that is, after the fixed shaft is fixed, the rotating shaft can still rotate, and after the external force driving the rotating shaft to rotate disappears, the rotating shaft can be reset under the action of the first elastic member.

[0015] When the torsion spring structure is applied to the seat cushion in the car seat, that is, the seat cushion is rotatably connected to the seat body by the torsion spring structure, the seat cushion can automatically pop up and flip over after the passenger leaves the seat cushion, thereby revealing the accommodating cavity under the seat cushion, so that the next passenger can directly know that there is space under the seat cushion for storing belongings before sitting on the seat cushion, thereby avoiding the passengers' belongings from occupying the aisle space in the vehicle and improving the passengers' riding experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] Figure 1 It is a schematic diagram of the structure of Example 1 or Example 2; Figure 2 is a cross-sectional view of Example 1; Figure 3 It is a schematic diagram of the cooperation between the rotating ring and the first elastic member on the fixed shaft in Example 1; Figure 4 for Figure 3 A partial enlarged view of the middle part; Figure 5 is a cross-sectional view of Example 2; Figure 6 for Figure 5 A partial enlarged view of point B in the middle; Figure 7 for Figure 5 A partial enlarged view of point C in the middle; Figure 8 It is a structural schematic diagram of Example 3; Fig. 9 It is a structural schematic diagram of Example 4; Fig.10 for Fig. 9 A cross-sectional view of Fig.11 for Fig.10 Partial enlarged view of point D in the middle: Fig.12 It is a schematic diagram of the positions of the coil spring structure and the auxiliary flipping structure in Example 4; Fig.13 for Fig.12 A local enlarged view of point E in FIG. Fig.14 This is a schematic diagram of the structure of the second elastic member in Example 5.

[0018] In the figure: 11. Rotating shaft body; 111. Rotating ring; 12. Fixed shaft body; 121. First fixed end; 122. Second fixed end; 123. Connecting rod body; 13. First elastic member; 2. Auxiliary bearing; 3. Connecting ring groove; 4. Connecting snap ring; 5. Seat body; 51. Cushion plate; 511. Linkage frame; 512. Expanding inclined surface; 52. Flip seat; 53. Accommodating chamber; 6. Auxiliary flip structure; 61. Flip shaft; 62. Second elastic member; 621. Abutting portion; 622. Sleeve portion. DETAILED DESCRIPTION

[0019] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0020] like Figure 1~Figure 2 As shown, this embodiment proposes a torsion spring structure, which mainly includes a rotating shaft 11, a fixed shaft 12, and a first elastic member 13. That is, the overall structure of this embodiment is in the shape of a rotating shaft and can act on various objects that need to be reset by rotating the rotating shaft, ensuring that this embodiment has a sufficiently wide application environment.

[0021] Specifically, the rotating shaft body 11 is an annular structure and is sleeved on the fixed shaft body 12. The rotating shaft body 11 is rotatably connected to the fixed shaft body 12. That is, unlike the traditional rotating shaft, only the rotating shaft body 11 connected to the object to be rotated rotates. Compared with the traditional rotating shaft that requires the overall structure to rotate and can only be fixed through the hole-shaft matching constraint, this embodiment can effectively resist the loads from the axial and radial directions by fixing the fixed shaft body 12 at the corresponding position, reduce vibration and swing, and thus ensure the stability of the rotation of the rotating object achieved by means of this embodiment.

[0022] The first elastic member 13 is located between the rotating shaft 11 and the fixed shaft 12, and both ends of the first elastic member 13 are closed and fixedly connected to the rotating shaft 11 and the fixed shaft 12, that is, when a force is applied to the rotating shaft 11 to rotate the rotating shaft 11, the first elastic member 13 will be deformed, so that after the external force no longer acts on the rotating shaft 11, the first elastic member 13 will start to reset, thereby resetting the rotating shaft 11 after rotation.

[0023] Specifically, Figure 1~Figure 4 As shown, the fixed shaft body 12 in this embodiment includes a first fixed end 121, a second fixed end 122, and a connecting rod body 123. The first fixed end 121 and the second fixed end 122 are respectively fixedly connected to the two ends of the connecting rod body 123, that is, the cross section of the fixed shaft body 12 is an "I"-shaped structure, so that the fixed shaft body 12 has good anti-bending ability and fully improves its strength and bearing capacity. The rotating shaft body 11 is located between the first fixed end 121 and the second fixed end 122, so that the first fixed end 121 and the second fixed end 122 can play a role in restraining and limiting the rotating shaft body 11, thereby improving the stability of the overall structure of this embodiment. The first elastic member 13 is a scroll structure, that is, the torsion spring in this embodiment is a scroll spring structure, so that when the first elastic member 13 rotates with the rotating shaft body 11, it deforms along the circumferential direction of the rotating shaft body 11, so that the rotational force of the rotating shaft body 11 can directly act on and be transmitted to the first elastic member 13, so that the deformation of the first elastic member 13 is more stable.

[0024] In addition, the first elastic member 13 in this embodiment is directly located between the fixed shaft 12 and the rotating shaft 11. Compared with the design located on both sides of the rotating shaft, the force of rotating the rotating shaft can directly act on the first elastic member 13 or the force of deformation of the first elastic member 13 can directly act on the rotating shaft, thereby effectively reducing the vibration generated by the rotating shaft during rotation and improving the working stability of the rotating shaft (fixed shaft 12 and rotating shaft 11).

[0025] The rotating shaft body 11 includes a plurality of rotating rings 111, and the first elastic member 13 is provided with a plurality of first elastic members 13, that is, the rotating shaft body 11 is designed in sections to prevent the first elastic member 13 from being too long in the direction of the rotating shaft body 11, which makes it difficult to deform during the installation process, thereby facilitating the installation work of this embodiment.

[0026] The cross-section of each rotating ring 111 is a "U"-shaped structure. The rotating rings 111 are arranged in sequence along a linear direction and abut against each other. That is, with the help of the high load-bearing capacity and bending resistance of the "U"-shaped structure, the rotating rings 111 are effectively prevented from being deformed during use, thereby ensuring the stability of the overall structure of the rotating shaft 11 during use.

[0027] Each first elastic member 13 is respectively located between adjacent rotating rings 111, and the head and tail ends of each first elastic member 13 are respectively clamped with each rotating ring 111 and the connecting rod body 123. Each first elastic member 13 is respectively located inside the opening of the corresponding rotating ring 111, so that the rotating ring 111 can protect the first elastic member 13, thereby improving the operating safety of this embodiment.

[0028] Auxiliary bearings 2 are provided between the first fixed end 121 and the adjacent rotating ring 111, and between the second fixed end 122 and the adjacent rotating ring 111. That is, auxiliary bearings 2 are provided inside the present embodiment to ensure that the rotating shaft 11 can rotate smoothly, effectively prevent the rotating shaft 11 from getting stuck on the fixed shaft 12, and further improve the operational stability of the present embodiment.

[0029] The opening direction of each rotating ring 111 is toward the first fixed end 121. The cross-section of the first fixed end 121 is a horizontal "T"-shaped structure, and the cross-section of the second fixed end 122 is a "3"-shaped structure, so that the auxiliary bearing 2 can be installed between the first fixed end 121 and the adjacent rotating ring 111, and between the second fixed end 122 and the adjacent rotating ring 111, and the first fixed end 121 and the second fixed end 122 can protect the auxiliary bearing 2, thereby fully ensuring the safety of the internal structure of this embodiment.

[0030] Each auxiliary bearing 2 in this embodiment is preferably a deep groove ball bearing or the like that can effectively withstand radial forces, so as to ensure the radial load-bearing capacity of this embodiment. Example

[0031] like Figure 5~Figure 7 As shown, on the basis of Example 1, a connecting ring groove 3 is provided on the first fixed end 121 and each rotating ring 111 in this embodiment, and a connecting snap ring 4 is provided on the second fixed end 122 and the end of each rotating ring 111 away from the connecting ring groove 3, and each connecting snap ring 4 abuts against each connecting ring groove 3 one by one, that is, the adjacent rotating rings 111 are constrained to each other by the mutual engagement of each connecting snap ring 4 and each connecting ring groove 3, thereby further ensuring the stability of the structure of the rotating shaft body 11 itself, preventing the rotating shaft body 11 from deforming in the direction of its axis (depressing inward) due to force during operation, and making the overall structure of the rotating shaft body 11 more stable. Example

[0032] like Figure 8 As shown, on the basis of Example 1 or Example 2, the projection surface of the rotating ring 111 in this embodiment in the axial direction of the fixed shaft body 12 is a polygonal structure, so that when the hole and shaft of this embodiment are matched with the object to be flipped, even if the two are not fixed or the connection between the two is loose, the linkage relationship between the rotating shaft body 11 and the object to be flipped still exists, which fully improves the stability of the self-resetting function of this embodiment. Example

[0033] like Figure 9~Figure 10 As shown, this embodiment proposes a car seat applying embodiment 1 or embodiment 2, and also includes a seat body 5, and the seat body 5 mainly includes a cushion plate 51, a flip seat 52, and a accommodating cavity 53. The cushion plate 51 is located on the accommodating cavity 53 and is rotatably connected to the flip seat 52 through a torsion spring structure. Specifically, the fixed shaft 12 is fixedly connected to the flip seat 52, and the rotating shaft 11 is fixedly connected to the seat cushion 51. In this way, when the passenger presses the seat cushion 51 by hand or sits down directly to make the seat cushion 51 flip on the flip seat 52, the rotating shaft 11 can be driven to rotate, thereby causing the first elastic member 13 located between the rotating shaft 11 and the fixed shaft 12 to deform, thereby causing the first elastic member 13 to store energy; and after the passenger leaves the seat cushion 51, when there is no longer pressure on the seat cushion 51 to counteract the energy accumulated in the first elastic member 13, the energy accumulated in the first elastic member 13 will be released, causing the seat cushion 51 to flip and bounce under this force, thereby ensuring that the accommodating cavity 53 below the seat cushion 51 is in an open and closed state when the seat cushion 51 is not in use, so that the passenger can promptly know that there is storage space in the seat, so that the passenger can put the carried objects into the accommodating cavity 53 before using the seat cushion 51, so as to avoid the carried objects occupying the space in the car and improve the passenger riding experience.

[0034] At the same time, the flip seat 52 should be symmetrically and evenly distributed around the fixed shaft 12 to ensure that both ends of the fixed shaft 12 in this embodiment have support points to ensure the stability of the torsion spring structure.

[0035] In order to prevent the first elastic members 13 inside the torsion spring structure from getting stuck, an auxiliary flipping structure 6 is provided between the accommodating cavity 53 and the seat cushion 51 in this embodiment to provide an additional flipping force to the seat cushion 51 to ensure the stability of the resetting work of the seat cushion 51.

[0036] Specifically, the auxiliary flipping structure 6 includes a flipping shaft 61 and a second elastic member 62. The flipping shaft 61 is rotatably connected to the bottom of the seat cushion plate 51, that is, the flipping shaft 61 is rotatably connected to the accommodating cavity 53; the second elastic member 62 includes a butt joint 621 and a sleeve portion 622. The butt joint 621 abuts against the seat cushion plate 51, that is, through the abutment relationship between the butt joint 621 and the seat cushion plate 51, a linkage relationship is generated between the two; and both ends of the butt joint 621 have a sleeve portion 622, each sleeve portion 622 is sleeved on the flipping shaft 61 and is integrally formed with the butt joint 621 to ensure that there are support points on both sides of the butt joint 621, thereby ensuring that the butt joint 621 can be evenly stressed during the linkage process with the seat cushion plate 51, thereby avoiding the second elastic member 62 from breaking due to uneven stress during the linkage process, and fully ensuring the service life of the second elastic member 62.

[0037] The seat body 5 is provided with a mounting platform in the accommodating cavity 53, and a plurality of mounting holes are provided on the mounting platform. Both ends of the second elastic member 62 extend out for plug-in parts, and the plug-in parts are respectively inserted into the mounting holes one by one, thereby realizing the fixation of the second elastic member 62 in this embodiment, ensuring that the second elastic member 62 can transmit force to the seat cushion plate 51, and ensuring the stability of the seat cushion plate 51 when flipping.

[0038] like Figure 10~Figure 13 As shown, the abutment portion 621 in this embodiment is in a "U"-shaped structure on the projection surface on the horizontal plane. Compared with the bare rod structure, the "U"-shaped structure can make the abutment portion 621 and the seat cushion plate 51 have more contact area, thereby ensuring the linkage effect between the second elastic member 62 and the seat cushion plate 51; In order to further improve the connection and abutment strength between the abutment portion 621 and the seat cushion plate 51, the seat cushion plate 51 is provided with a linkage frame 511 for mutually engaging with the abutment portion 621, and the projection surface of the linkage frame 511 in the axial direction of the flip axis 61 is an "L"-shaped structure. Because in the "L"-shaped structure, one of the right-angled sides can be regarded as a side of a triangle, so that the "L"-shaped structure also has the characteristic of triangle stability to a certain extent, thereby ensuring the stability of the overall structure of the linkage frame 511; the opening directions of the linkage frame 511 and the abutment portion 621 are opposite to each other, so that the two are mutually engaged; preferably, the linkage frame 511 and the seat cushion plate 51 are integrally formed to ensure the connection strength between the two, so that the two can cooperate with the second elastic member 62 to move.

[0039] The linkage frame 511 is provided with an expansion bevel 512, and preferably two expansion bevels 512 are provided. The expansion bevels 512 are symmetrically and evenly distributed with the abutment portion 621 as the center, and the expansion bevels 512 are integrally formed with the linkage frame 511 to fully ensure the connection strength between the two. The linkage frame 511 and the expansion bevels 512 are in abutment with the abutment portion 621, so that the second elastic member 62 (abutment portion 621) has multiple contact points on the linkage frame 511, so that the linkage frame 511 can more evenly bear the force from the second elastic member 62, thereby avoiding the situation where the two are deformed by force due to mutual clamping.

[0040] At the same time, the projection surface of the cushion plate 51 in the axial direction of the rotating shaft body 11 is a horizontal "L"-shaped structure, that is, unnecessary parts of the cushion plate 51 are removed to reduce the mass of the cushion plate 51 itself, thereby reducing the difficulty of flipping the cushion plate 51 under the action of the torsion spring structure and the auxiliary flipping structure 6; the thickness of the end of the cushion plate 51 close to the rotating shaft body 11 is greater than the thickness of the end of the cushion plate 51 away from the rotating shaft body 11, ensuring that there is enough space on the cushion plate 51 to open a connecting hole for fixed connection of the rotating shaft body 11, so as to ensure the hole-axis fit between the cushion plate 51 and the rotating shaft body 11.

[0041] If necessary, a light-weight seat cushion can be fixedly arranged on the seat cushion plate 51 to ensure the riding comfort of the passengers. Example

[0042] like Fig.14As shown, different from the second elastic member 62 in Example 4, the second elastic member 62 in this embodiment includes a plurality of abutment portions 621 and a plurality of sleeve portions 622, and each abutment portion 621 is respectively located between each sleeve portion 622, that is, there are multiple contact points between the second elastic member 62 and the seat cushion plate 51 in this embodiment, so that the second elastic member 62 can more evenly bear the force from the seat cushion plate 51 or transfer the force to the seat cushion plate 51; correspondingly, a plurality of linkage frames 511 on the seat cushion plate 51 should also be provided, and each linkage frame 511 is clamped with each abutment portion 621 in a one-to-one correspondence, thereby ensuring the flipping effect and function of the auxiliary flipping structure 6 on the seat cushion plate 51.

[0043] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A torsion spring structure, characterized in that: The invention comprises a rotating shaft body (11), a fixed shaft body (12), and a first elastic member (13); the rotating shaft body (11) is an annular structure and is sleeved on the fixed shaft body (12); the rotating shaft body (11) and the fixed shaft body (12) are rotatably connected; the first elastic member (13) is used to reset the rotating shaft body (11) after rotation; and two ends of the first elastic member (13) are respectively fixedly connected to the rotating shaft body (11) and the fixed shaft body (12).

2. The torsion spring structure according to claim 1, characterized in that: The fixed shaft body (12) comprises a first fixed end (121), a second fixed end (122), and a connecting rod body (123); the first fixed end (121) and the second fixed end (122) are respectively fixedly connected to two ends of the connecting rod body (123); the rotating shaft body (11) is located between the first fixed end (121) and the second fixed end (122); and the first elastic member (13) is a scroll structure.

3. The torsion spring structure according to claim 1 or 2, characterized in that: The rotating shaft body (11) comprises a plurality of rotating rings (111), each of the rotating rings (111) having a cross-section of a "U"-shaped structure, and each of the rotating rings (111) is arranged in sequence along a linear direction and abuts against each other; A plurality of the first elastic members (13) are provided, each of the first elastic members (13) is located between adjacent rotating rings (111), and the first and tail ends of each first elastic member (13) are respectively clamped to each rotating ring (111) and the connecting rod body (123).

4. The torsion spring structure according to claim 3, characterized in that: An auxiliary bearing (2) is provided between the first fixed end (121) and the rotating ring (111) adjacent thereto, and between the second fixed end (122) and the rotating ring (111) adjacent thereto; The cross section of the first fixed end (121) is a horizontal "T"-shaped structure, and the cross section of the second fixed end (122) is a "3"-shaped structure.

5. The torsion spring structure according to claim 3, characterized in that: The first fixed end (121) and each rotating ring (111) are both provided with a connecting ring groove (3), and the second fixed end (122) and one end of each rotating ring (111) away from the connecting ring groove (3) are both provided with a connecting snap ring (4), and each connecting snap ring (4) abuts against each connecting ring groove (3) one by one.

6. A car seat, comprising the torsion spring structure according to any one of claims 1 to 5 and a seat body (5), characterized in that: The seat body (5) comprises a cushion plate (51), a flip seat (52), and a receiving cavity (53); the cushion plate (51) is located above the receiving cavity (53); the flip seats (52) are symmetrically and evenly distributed around the fixed shaft body (12); the fixed shaft body (12) is fixedly connected to the flip seat (52); the rotating shaft body (11) is fixedly connected to the cushion plate (51); and an auxiliary flip structure (6) is provided between the receiving cavity (53) and the cushion plate (51).

7. The vehicle seat according to claim 6, characterized in that: The auxiliary turning structure (6) comprises a turning shaft (61) and a second elastic member (62); the turning shaft (61) is rotatably connected to the bottom of the cushion plate (51); the second elastic member (62) comprises a contact portion (621) and a sleeve portion (622); the contact portion (621) contacts the cushion plate (51), and both ends of the contact portion (621) have a sleeve portion (622); each sleeve portion (622) is sleeved on the turning shaft (61) and is integrally formed with the contact portion (621).

8. The vehicle seat according to claim 7, characterized in that: The projection surface of the abutment portion (621) on the horizontal plane is in the shape of a "U"; the cushion plate (51) is provided with a linkage frame (511) for mutually engaging with the abutment portion (621); the projection surface of the linkage frame (511) in the axial direction of the flip shaft (61) is in the shape of an "L"; 9. The vehicle seat according to claim 6 or 8, characterized in that: The projection surface of the cushion plate (51) in the axial direction of the rotating shaft (11) is a horizontal "L"-shaped structure, and the thickness of the end of the cushion plate (51) close to the rotating shaft (11) is greater than the thickness of the end of the cushion plate (51) away from the rotating shaft (11).

10. The vehicle seat according to claim 8, characterized in that The linkage frame (511) is provided with an expansion inclined surface (512), and the expansion inclined surface (512) and the linkage frame (511) are both in abutment with the abutment portion (621).

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