Seat chassis and seat with same
By setting the matching of limit slots and limit projections in the seat chassis to limit the rotation angle of the bracket, the problems of complex structure and maintenance difficulties in traditional seat chassis are solved, and safety and maintenance convenience are improved.
Patent Information
- Application Number
- CN202422908790.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-11-27
AI Technical Summary
In order to achieve free-moving motion function, traditional seat chassis requires additional mechanical limiting devices, which takes up a lot of space, increases cost and difficulty in maintenance.
The chassis bracket and the back connection bracket are used to form a limit structure. Through the coordination of the limit groove and the limit projection, the rotation angle of the bracket is limited and the additional limit structure is avoided.
The seat chassis structure is simplified, safety and maintenance convenience are improved, and the number of parts and maintenance costs are reduced.
Smart Images
Figure CN223275155U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of seats, in particular to a seat chassis and a seat having the same. Background Art
[0002] To provide comfortable seating adjustments, the seat chassis typically needs to have a certain degree of free movement. Traditional seats often require additional limiters to control the range of motion and ensure the reliability of the free movement function.
[0003] In existing technology, seat chassis typically incorporate additional mechanical stoppers to limit the position of the stroller function. These additional mechanical stoppers typically require additional installation space and may require frequent adjustment or replacement due to wear during use. Consequently, additional mechanical stoppers not only increase the number of components but also increase costs and maintenance complexity. Utility Model Content
[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a seat chassis that not only effectively prevents the back connecting bracket from rotating at an excessive angle, thereby effectively improving safety, but also effectively simplifies the structural construction of the seat chassis, thereby effectively improving the convenience and efficiency of maintenance.
[0005] The utility model also provides a seat with the seat chassis.
[0006] According to the seat chassis of the first aspect of the present invention, the seat chassis includes: a chassis bracket; a back connecting bracket, wherein the back connecting bracket is arranged at the rear end of the chassis bracket and is rotatable relative to the chassis bracket between a first position and a second position around a rotation axis extending left and right, wherein at least one of the chassis bracket and the back connecting bracket forms a limiting structure, and the limiting structure is configured to: when the back connecting bracket is located at the first position and / or the second position, limit the rotation of the back connecting bracket relative to the chassis bracket.
[0007] According to the seat chassis of the present invention, a chassis bracket and a back connecting bracket are arranged in the seat chassis, the back connecting bracket is arranged at the rear end of the chassis bracket, and is rotatable relative to the chassis bracket between a first position and a second position around a rotation axis extending left and right, wherein at least one of the chassis bracket and the back connecting bracket forms a limiting structure, and the limiting structure is configured to: when the back connecting bracket is in the first position and / or the second position, it is used to limit the rotation of the back connecting bracket relative to the chassis bracket, which can not only effectively avoid the back connecting bracket from rotating too much, thereby effectively improving safety, but also effectively simplify the structural construction of the seat chassis, avoid the provision of additional limiting structures, thereby effectively improving the convenience and efficiency of maintenance.
[0008] In some embodiments, the limiting structure includes a limiting groove and a limiting protrusion, one of the limiting groove and the limiting protrusion is formed on the chassis bracket and the other is formed on the back connecting bracket, the limiting protrusion can be movably engaged in the limiting groove, and when the back connecting bracket is in the first position and / or the second position, the limiting protrusion abuts against the inner wall of the limiting groove.
[0009] In some embodiments, the inner wall of the limiting groove includes a first side wall and a second side wall that are not coplanar. When the back connecting bracket is in the first position, the limiting protrusion abuts against the first side wall. When the back connecting bracket is in the second position, the limiting protrusion abuts against the second side wall.
[0010] In some embodiments, the first side wall is connected to the second side wall and is arranged at an angle.
[0011] In some embodiments, the first sidewall is connected to the second sidewall in an arc shape.
[0012] In some embodiments, the chassis bracket includes two first side panels and at least one first cross beam, the two first side panels extend up and down and are arranged at intervals in the left and right directions, the first cross beam extends left and right and is connected between the two first side panels, the back connecting bracket includes two second side panels and at least one second cross beam, the two second side panels extend up and down and are arranged at intervals in the left and right directions, the two second side panels are arranged between the two first side panels, the second cross beam extends left and right and is connected between the two second side panels, wherein the rear side edge of at least one first side panel is recessed forward to form the limiting groove, and the limiting protrusion is formed on one side surface of the second side panel in the thickness direction and protrudes toward the limiting groove.
[0013] In some embodiments, in the left-right direction, the end surface of the limiting protrusion facing away from the second side plate is flush with the edge of the limiting groove facing away from the second side plate, or the end surface of the limiting protrusion facing away from the second side plate exceeds the edge of the limiting groove facing away from the second side plate.
[0014] In some embodiments, the seat chassis further includes: a driving mechanism, the driving mechanism including: a driving motor and a push rod, the driving motor is arranged on the chassis bracket, the push rod extends forward and backward, the driving motor is connected to the front end of the push rod for driving the push rod to move forward and backward, the rear end of the push rod is hinged to the back connecting bracket, and the driving motor pushes the back connecting bracket to rotate between the first position and the second position through the push rod.
[0015] In some embodiments, the driving mechanism further includes: a connecting frame and a connecting shaft, the connecting frame is fixed on the back connecting bracket and is U-shaped with the opening facing forward, the rear end of the push rod is formed with an axial hole that passes through the push rod along the radial direction of the push rod, the connecting shaft is passed through the axial hole and both ends are respectively fixed to the connecting frame.
[0016] The seat according to the second aspect of the present invention comprises the seat chassis according to the first aspect of the present invention.
[0017] According to the seat of the second aspect of the present invention, by setting the seat chassis of the above-mentioned first aspect, it is possible not only to effectively prevent the back connecting bracket from rotating too much, thereby effectively improving safety, but also to effectively simplify the structural structure of the seat chassis, avoid setting additional limiting structures, thereby effectively improving the convenience and efficiency of maintenance.
[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic diagram of a seat chassis according to an embodiment of the present invention at one angle;
[0020] Figure 2 is a schematic diagram of a seat chassis according to another angle of an embodiment of the present invention;
[0021] Figure 3 This is a schematic diagram of a seat chassis according to another angle of an embodiment of the present invention.
[0022] Reference numerals:
[0023] 100. Seat chassis;
[0024] 10. Chassis bracket; 101. Limiting groove; 1011. First side wall; 1012. Second side wall; 11. First side plate; 111. First protrusion; 112. First mounting plate; 1120. First mounting hole; 12. First crossbeam; 13. First longitudinal beam; 14. Third crossbeam; 15. First connecting member;
[0025] 20. Back connecting bracket; 21. Position limiting protrusion; 22. Second side plate; 220. Second mounting hole; 23. Second crossbeam;
[0026] 31. Driving motor; 32. Push rod; 33. Connecting frame; 34. Connecting shaft;
[0027] 40. Joystick. DETAILED DESCRIPTION
[0028] 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.
[0029] Reference below Figure 1-Figure 3 A seat pan 100 according to an embodiment of a first aspect of the present invention will be described.
[0030] like Figure 1-Figure 3 As shown, the seat chassis 100 according to the embodiment of the first aspect of the present utility model includes: a chassis bracket 10 and a back connecting bracket 20.
[0031] The back connecting bracket 20 is arranged at the rear end of the chassis bracket 10 and is rotatable between a first position and a second position relative to the chassis bracket 10 around a rotation axis extending left and right, wherein at least one of the chassis bracket 10 and the back connecting bracket 20 forms a limiting structure, and the limiting structure is configured to: when the back connecting bracket 20 is in the first position and / or the second position, it is used to limit the rotation of the back connecting bracket 20 relative to the chassis bracket 10.
[0032] For example, a limiting structure may be formed on the chassis bracket 10; another example, a limiting structure may be formed on the back connecting bracket 20; another example, limiting structures may be formed on both the chassis bracket 10 and the back connecting bracket 20, and the limiting structure on the chassis bracket 10 may cooperate with the limiting structure on the back connecting bracket 20. In other words, the limiting structure in the present application is formed on at least one of the chassis bracket 10 and the back connecting bracket 20, thereby avoiding the need for an additional limiting structure.
[0033] For example, when the back connecting bracket 20 is in the first position, the limiting structure can limit the rotation of the back connecting bracket 20 relative to the chassis bracket 10; for another example, when the back connecting bracket 20 is in the second position, the limiting structure can limit the rotation of the back connecting bracket 20 relative to the chassis bracket 10; for another example, when the back connecting bracket 20 is in the first position, the limiting structure can limit the rotation of the back connecting bracket 20 relative to the chassis bracket 10, and when the back connecting bracket 20 is in the second position, the limiting structure can also limit the rotation of the back connecting bracket 20 relative to the chassis bracket 10.
[0034] That is to say, the back connecting bracket 20 can rotate between a first position and a second position relative to the chassis bracket 10 around a rotation axis extending left and right, and when the back connecting bracket 20 is located in the first position and / or the second position, the limiting structure can limit further rotation of the back connecting bracket 20 relative to the chassis bracket 10. Therefore, during the use of the seat chassis 100, the limiting structure can prevent the back connecting bracket 20 from rotating at an excessive angle due to external force.
[0035] In a specific example, Figure 1-Figure 3 As shown, the back connecting bracket 20 is arranged at the rear end of the chassis bracket 10 and the front end of the back connecting bracket 20 is rotatably connected to the rear end of the chassis bracket 10, that is, the back connecting bracket 20 can be rotated between the first position and the second position, so as to effectively meet the different needs of users.
[0036] Furthermore, the chassis bracket 10 and the back connecting bracket 20 are both made of Q235 steel. It should be noted that Q235 steel has excellent strength and toughness, and can withstand certain tensile, compressive, and bending loads. Components made of Q235 steel are also easy to process, such as welding, cutting, and bending. Therefore, using Q235 steel for the chassis bracket 10 and the back connecting bracket 20 can effectively improve structural strength and reduce processing difficulty.
[0037] In a specific example, a seat chassis 100 is provided on a seat. Furthermore, a seat cushion and a backrest are provided in the seat. The upper side of the chassis bracket 10 is fixedly connected to the lower side of the seat cushion, and the rear end of the back connecting bracket 20 is fixedly connected to the lower end of the backrest. When the user adjusts the back connecting bracket 20 to rotate between the first position and the second position, the back connecting bracket 20 can drive the backrest to rotate, thereby effectively meeting the different needs of users.
[0038] In this embodiment, when the back connecting bracket 20 rotates to the first position, the limiting structure can effectively limit the rotation of the back connecting bracket 20, thereby preventing further rotation of the back connecting bracket 20. When the back connecting bracket 20 rotates to the second position, the limiting structure can effectively limit the rotation of the back connecting bracket 20, thereby preventing further rotation of the back connecting bracket 20. Thus, the limiting structure can prevent the back connecting bracket 20 from rotating excessively due to external forces, thereby preventing the backrest from rotating excessively, thereby effectively protecting the user and effectively improving safety.
[0039] In addition, a limiting structure is formed on at least one of the chassis bracket 10 and the back connecting bracket 20, thereby avoiding the need for an additional limiting structure, saving installation space and effectively reducing the number of parts of the seat chassis 100, thereby effectively simplifying the structural structure of the seat chassis 100, thereby effectively reducing the maintenance difficulty and manufacturing cost of the seat chassis 100.
[0040] According to the seat chassis 100 of the embodiment of the present invention, a chassis bracket 10 and a back connecting bracket 20 are arranged in the seat chassis 100, the back connecting bracket 20 is arranged at the rear end of the chassis bracket 10, and is rotatable between a first position and a second position relative to the chassis bracket 10 around a rotation axis extending left and right, wherein at least one of the chassis bracket 10 and the back connecting bracket 20 forms a limiting structure, and the limiting structure is configured to: when the back connecting bracket 20 is in the first position and / or the second position, it is used to limit the rotation of the back connecting bracket 20 relative to the chassis bracket 10, which can not only effectively prevent the back connecting bracket 20 from rotating too large, thereby effectively improving safety, but also effectively simplify the structural construction of the seat chassis 10, avoid the provision of additional limiting structures, thereby effectively improving the convenience and efficiency of maintenance.
[0041] In one embodiment of the present invention, Figure 1-Figure 3 As shown, the limiting structure includes a limiting groove 101 and a limiting protrusion 21. One of the limiting groove 101 and the limiting protrusion 21 is formed on the chassis bracket 10 and the other is formed on the back connecting bracket 20. The limiting protrusion 21 can be movably engaged in the limiting groove 101. When the back connecting bracket 20 is in the first position and / or the second position, the limiting protrusion 21 abuts against the inner wall of the limiting groove 101.
[0042] For example, the limiting groove 101 is formed on the chassis bracket 10, and the limiting protrusion 21 is formed on the back connecting bracket 20; for another example, the limiting groove 101 is formed on the back connecting bracket 20, and the limiting protrusion 21 is formed on the chassis bracket 10. In a specific example, Figure 1-Figure 3As shown, the limiting groove 101 is formed on the chassis bracket 10, and the limiting protrusion 21 is formed on the back connecting bracket 20. The limiting protrusion 21 can be movably engaged in the limiting groove 101. That is, when the back connecting bracket 20 rotates relative to the chassis bracket 10, the limiting protrusion 21 can rotate relative to the chassis bracket 10 in the limiting groove 101.
[0043] For example, when the back connecting bracket 20 is in the first position, the limiting protrusion 21 abuts against the inner wall of the limiting groove 101; for another example, when the back connecting bracket 20 is in the second position, the limiting protrusion 21 abuts against the inner wall of the limiting groove 101; for another example, when the back connecting bracket 20 is in the first position, the limiting protrusion 21 abuts against the inner wall of the limiting groove 101, and when the back connecting bracket 20 is in the second position, the limiting protrusion 21 abuts against the inner wall of the limiting groove 101.
[0044] In this embodiment, a limiting groove 101 and a limiting protrusion 21 are provided in the limiting structure. One of the limiting groove 101 and the limiting protrusion 21 is formed on the chassis bracket 10 and the other is formed on the back connecting bracket 20. The limiting protrusion 21 can be movably engaged in the limiting groove 101. When the back connecting bracket 20 is located in the first position and / or the second position, the limiting protrusion 21 abuts against the inner wall of the limiting groove 101, which can effectively simplify the structural structure of the limiting structure, thereby effectively reducing the number of parts of the limiting structure, and further effectively reducing the maintenance difficulty of the limiting structure and effectively reducing the manufacturing cost of the limiting structure.
[0045] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, the inner wall of the limiting groove 101 includes a first side wall 1011 and a second side wall 1012 that are not coplanar. When the back connecting bracket 20 is in the first position, the limiting protrusion 21 abuts against the first side wall 1011. When the back connecting bracket 20 is in the second position, the limiting protrusion 21 abuts against the second side wall 1012. In a specific example, as shown in FIG. Figure 1 and Figure 3 As shown, the first side wall 1011 of the limiting groove 101 is located on the upper side of the second side wall 1012. Furthermore, the first side wall 1011 extends along the front-to-back direction, and the second side wall 1012 extends along the up-down direction.
[0046] When the back connecting bracket 20 is in the first position, as shown in FIG. Figure 1As shown, the limiting protrusion 21 is now located in the limiting groove 101 and abuts against the first side wall 1011 of the limiting groove 101 in the vertical direction, thereby preventing the limiting protrusion 21 from rotating in a direction away from the second side wall 1012. When the back connecting bracket 20 is in the second position, the limiting protrusion 21 is now located in the limiting groove 101 and abuts against the second side wall 1012 of the limiting groove 101 in the horizontal direction, thereby preventing the limiting protrusion 21 from rotating in a direction away from the first side wall 1011.
[0047] That is, the rotation range of the back connecting bracket 20 is limited between the first position and the second position, and when the back connecting bracket 20 is rotated to the first position, the limiting protrusion 21 abuts against the first side wall 1011, thereby effectively limiting further rotation of the back connecting bracket 20, and thus effectively limiting further rotation of the backrest. When the back connecting bracket 20 is rotated to the second position, the limiting protrusion 21 abuts against the second side wall 1012, thereby effectively limiting further rotation of the back connecting bracket 20, and thus effectively limiting further rotation of the backrest.
[0048] In this embodiment, a non-coplanar first side wall 1011 and a second side wall 1012 are set in the limiting groove 101. When the back connecting bracket 20 is in the first position, the limiting protrusion 21 abuts against the first side wall 1011, and when the back connecting bracket 20 is in the second position, the limiting protrusion 21 abuts against the second side wall 1012. This can effectively ensure the stability and reliability of the limiting protrusion 21 when abutting against the first side wall 1011 and the second side wall 1012 when the back connecting bracket 20 is in the first position and the second position.
[0049] In one embodiment of the present invention, Figure 1-Figure 3 As shown, the first side wall 1011 is connected to the second side wall 1012 and is arranged at an angle. In other words, the angle between the first side wall 1011 and the second side wall 1012 can be set according to the different rotation angle ranges required by the back connection bracket 20, thereby enabling the backrest to have different rotation angle ranges, thereby effectively meeting the different needs of users.
[0050] For example, the angle between the first side wall 1011 and the second side wall 1012 can be set to 60°, 65°, 70°, 75°, 80°, 85° and 90° according to different needs of users. Figure 1 and Figure 3As shown, the first side wall 1011 of the limiting groove 101 is located on the upper side of the second side wall 1012, and the right end of the first side wall 1011 is connected to the upper end of the second side wall 1012. Furthermore, the first side wall 1011 is extended in the front-to-back direction, and the second side wall 1012 is extended in the up-down direction, that is, the first side wall 1011 and the second side wall 1012 are arranged perpendicular to each other.
[0051] In this embodiment, by connecting the first side wall 1011 and the second side wall 1012 and arranging them at an angle, the back connecting bracket 20 can have a rotation range of different angles, thereby effectively meeting the different needs of users and effectively improving the flexibility and applicability of the seat chassis 100.
[0052] In one embodiment of the present invention, Figure 1-Figure 3 As shown, the first side wall 1011 is connected to the second side wall 1012 in an arc shape. Figure 1 As shown, the front end of the first side wall 1011 and the upper end of the second side wall 1012 are connected by an arc transition.
[0053] When the limiting protrusion 21 abuts against the first side wall 1011 or the second side wall 1012, the arc connection between the first side wall 1011 and the second side wall 1012 can provide a smooth transition area, thereby effectively avoiding excessive stress at the connection between the first side wall 1011 and the second side wall 1012, and thus effectively avoiding the phenomenon of stress concentration, thereby effectively avoiding damage to the connection between the first side wall 1011 and the second side wall 1012.
[0054] This embodiment can effectively avoid stress concentration at the connection between the first side wall 1011 and the second side wall 1012 by setting the first side wall 1011 and the second side wall 1012 to be connected in a circular arc, thereby effectively protecting the connection between the first side wall 1011 and the second side wall 1012, and further effectively improving the durability of the limiting groove 101, thereby effectively improving the service life of the limiting structure.
[0055] In one embodiment of the present invention, Figure 1-Figure 3As shown, the chassis bracket 10 includes two first side panels 11 and at least one first cross beam 12, the two first side panels 11 extend up and down and are arranged at intervals in the left and right directions, the first cross beam 12 extends left and right and is connected between the two first side panels 11, the back connecting bracket 20 includes two second side panels 22 and at least one second cross beam 23, the two second side panels 22 extend up and down and are arranged at intervals in the left and right directions, the two second side panels 22 are arranged between the two first side panels 11, the second cross beam 23 extends left and right and is connected between the two second side panels 22, wherein the rear side edge of at least one first side panel 11 is recessed forward to form a limiting groove 101, and the limiting protrusion 21 is formed on one side surface of the second side panel 22 in the thickness direction and protrudes toward the limiting groove 101.
[0056] For example, the number of the first cross beam 12 in the chassis bracket 10 may be one; for another example, the number of the first cross beam 12 in the chassis bracket 10 may be multiple, for example, the number of the first cross beam 12 in the chassis bracket 10 may be two, three, four, five, or more than six. In a specific example, Figure 1-Figure 3 As shown, there are two first cross beams 12 in the chassis bracket 10 , and the two first cross beams 12 are welded between the two first side plates 11 at intervals in the upper and lower directions.
[0057] Furthermore, a raised first protrusion 111 is provided on the side of the first side panel 11 facing away from the first crossbeam 12. This first protrusion 111 effectively enhances the structural strength and rigidity of the first side panel 11, thereby effectively improving the durability and service life of the chassis bracket 10. Furthermore, a first mounting plate 112 is provided on the upper edge of the first side panel 11, extending toward the first crossbeam 12. This first mounting plate 112 is disposed perpendicular to the first side panel 11 and is provided with a plurality of first mounting holes 1120, which are used to securely mount the seat chassis 100 to the underside of the seat cushion.
[0058] For example, the number of the second cross beam 23 in the back connection bracket 20 can be one; for another example, the number of the second cross beam 23 in the back connection bracket 20 can be multiple, for example, the number of the second cross beam 23 in the back connection bracket 20 can be two, three, four, five or more than six. In a specific example, Figure 1-Figure 3 As shown, the back connecting bracket 20 includes two second cross beams 23, which are welded to the two second side panels 22 at intervals. Furthermore, the rear ends of the second side panels 22 are provided with a plurality of second mounting holes 220, through which the back connecting bracket 20 can be fixedly mounted to the lower end of the backrest.
[0059] For example, the rear edge of one of the two first side plates 11 is recessed forward to form the limiting groove 101; or, for another example, the rear edges of both first side plates 11 are recessed forward to form the limiting groove 101. Figure 1 and Figure 2 As shown, the rear edge of the right first side panel 11 is recessed forward to form a retaining groove 101, and a retaining protrusion 21 projecting rightward is formed on the right side surface of the right second side panel 22. The rear edge of the left first side panel 11 is recessed forward to form the retaining groove 101, and a retaining protrusion 21 projecting leftward is formed on the left side surface of the left second side panel 22. Furthermore, the retaining protrusion 21 can be cylindrical in shape. In other words, the retaining groove 101 is open, thereby further simplifying the structural construction of the retaining structure and facilitating assembly between the chassis bracket 10 and the back connecting bracket 20.
[0060] In this embodiment, two first side panels 11 and at least one first cross beam 12 are provided in the chassis bracket 10. The two first side panels 11 extend up and down and are arranged at intervals in the left and right directions. The first cross beam 12 extends left and right and is connected between the two first side panels 11. This can effectively improve the structural strength and rigidity of the chassis bracket 10, thereby effectively improving the durability of the chassis bracket 10. Two second side panels 22 and at least one second cross beam 23 are provided in the back connecting bracket 20. The two second side panels 22 extend up and down and are arranged at intervals in the left and right directions. The two second side panels 22 are arranged between the two Between the first side panels 11, the second cross beam 23 extends left and right and is connected between the two second side panels 22, which can effectively improve the structural strength and rigidity of the back connecting bracket 20, and thus effectively improve the durability of the back connecting bracket 20; by recessing the rear edge of at least one first side panel 11 forward to form a limiting groove 101, a limiting protrusion 21 is formed on one side surface of the second side panel 22 in the thickness direction, and protrudes toward the limiting groove 101, which can effectively simplify the structural construction of the limiting structure and effectively improve the convenience of assembly between the chassis bracket 10 and the back connecting bracket 20.
[0061] In one embodiment of the present invention, Figure 1 As shown, in the left-right direction, the end face of the limiting protrusion 21 facing away from the second side plate 22 is flush with the edge of the limiting groove 101 facing away from the second side plate 22, or the end face of the limiting protrusion facing away from the second side plate 22 exceeds the edge of the limiting groove 101 facing away from the second side plate 22.
[0062] For example, in the left-right direction, the end surface of the limiting protrusion 21 that faces away from the second side plate 22 is flush with the edge of the limiting groove 101 that faces away from the second side plate 22; for another example, in the left-right direction, the end surface of the limiting protrusion that faces away from the second side plate 22 exceeds the edge of the limiting groove 101 that faces away from the second side plate 22. In a specific example, Figure 1 As shown, the right end surface of the limiting protrusion 21 on the right second side plate 22 is flush with the edge of the right limiting groove 101 on the side facing away from the right second side plate 22 .
[0063] In the left and right directions, this embodiment sets the end face of the limiting protrusion 21 facing away from the second side plate 22 to be flush with the edge of the side of the limiting groove 101 facing away from the second side plate 22, or sets the end face of the limiting protrusion facing away from the second side plate 22 to exceed the edge of the side of the limiting groove 101 facing away from the second side plate 22, so as to ensure the contact area of the limiting protrusion 21 when it abuts against the first side wall 1011 and the second side wall 1012, thereby effectively improving the stability and reliability of the limiting protrusion 21 when it abuts against the first side wall 1011 and the second side wall 1012.
[0064] In one embodiment of the present invention, Figure 1-Figure 3 As shown, the seat chassis 100 also includes: a driving mechanism, which includes: a driving motor 31 and a push rod 32. The driving motor 31 is arranged on the chassis bracket 10, and the push rod 32 extends forward and backward. The driving motor 31 is connected to the front end of the push rod 32 to drive the push rod 32 to move forward and backward. The rear end of the push rod 32 is hinged to the back connecting bracket 20. The driving motor 31 pushes the back connecting bracket 20 to rotate between the first position and the second position through the push rod 32.
[0065] In a specific example, Figure 1-Figure 3 As shown, the drive motor 31 is arranged on the lower side of the push rod 32 and is connected to the rear end of the push rod 32. Further, the push rod 32 can be an electric rod or a pneumatic rod, and the chassis bracket 10 is also provided with a first longitudinal beam 13, a third cross beam 14 and a first connecting member 15, as shown in FIG. Figure 1 As shown, the first longitudinal beam 13 extends forward and backward and the rear end of the first longitudinal beam 13 is welded to the first cross beam 12, the third cross beam 14 extends left and right, the left end of the third cross beam 14 is welded to the first side plate 11 on the left, the right end of the third cross beam 14 is welded to the front end of the first longitudinal beam 13, the upper end of the first connecting member 15 is welded to the front end of the first longitudinal beam 13 and the right end of the third cross beam 14, and the front end of the push rod 32 is connected to the first connecting member 15.
[0066] Furthermore, if Figure 1-Figure 3 As shown, the first connecting member 15 is a downwardly opening U-shaped member. A joystick 40 is also provided in the seat chassis 100. The user can use the joystick 40 to activate the drive motor 31, thereby causing the push rod 32 to rotate the back connecting bracket 20, thereby rotating the backrest. Furthermore, the user can also use the joystick 40 to lock the back connecting bracket 20, thereby locking the backrest and thereby fixing the backrest in a desired position.
[0067] In this embodiment, a driving mechanism is set in the seat chassis 100. The driving mechanism includes: a driving motor 31 and a push rod 32. The driving motor 31 is set on the chassis bracket 10, and the push rod 32 extends forward and backward. The driving motor 31 is connected to the front end of the push rod 32 to drive the push rod 32 to move forward and backward. The rear end of the push rod 32 is hinged to the back connecting bracket 20. The driving motor 31 pushes the back connecting bracket 20 to rotate between the first position and the second position through the push rod 32, which can effectively improve the convenience of the user in rotating the back connecting bracket 20, thereby effectively improving the user's experience.
[0068] In one embodiment of the present invention, Figure 1 As shown, the driving mechanism also includes: a connecting frame 33 and a connecting shaft 34. The connecting frame 33 is fixed on the back connecting bracket 20 and is U-shaped with the opening facing forward. The rear end of the push rod 32 is formed with an axial hole that passes through the push rod 32 in the radial direction of the push rod 32. The connecting shaft 34 is passed through the axial hole and both ends are fixed to the connecting frame 33 respectively.
[0069] In a specific example, Figure 1 As shown, one end of the connecting frame 33 is welded to the second crossbeam 23 of the back connecting bracket 20, and the other end of the connecting frame 33 is fixedly connected to the left and right ends of the connecting shaft 34. When the push rod 32 moves backward, the connecting frame 33 rotates counterclockwise around the axis of the connecting shaft 34 from right to left, thereby driving the back connecting bracket 20 to rotate counterclockwise around the chassis bracket 10; when the push rod 32 moves forward, the connecting frame 33 rotates clockwise around the axis of the connecting shaft 34 from right to left, thereby driving the back connecting bracket 20 to rotate clockwise around the chassis bracket 10.
[0070] This embodiment provides a connecting frame 33 and a connecting shaft 34 in the drive mechanism. The connecting frame 33 is fixed to the back connecting bracket 20 and has a U-shape with its opening facing forward. The rear end of the push rod 32 is formed with an axial hole that penetrates the push rod 32 in the radial direction. The connecting shaft 34 is inserted into the axial hole and fixed to the connecting frame 33 at both ends. This effectively converts the linear motion of the push rod 32 into the fixed-axis rotation of the back connecting bracket 20, thereby effectively ensuring the reliability of the rotation of the back connecting bracket 20. In addition, it can effectively reduce noise and wear during the rotation of the back connecting bracket 20, thereby effectively improving user comfort.
[0071] The seat according to the second embodiment of the present invention includes the seat chassis 100 according to the first embodiment of the present invention. It should be noted that the seat of the present application can be a home seat, an office seat, an e-sports chair, a children's seat, and a dining chair.
[0072] The seat according to the embodiment of the present invention, by providing the seat chassis 100 of the first aspect mentioned above, can not only effectively prevent the back connecting bracket 20 from rotating too much, thereby effectively improving safety, but also effectively simplify the structural construction of the seat chassis 100, avoid the provision of additional limiting structures, thereby effectively improving the convenience and efficiency of maintenance.
[0073] 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", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.
[0074] 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, "plurality" means two or more, unless otherwise specifically defined.
[0075] In this utility model, unless otherwise expressly 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 integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.
[0077] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A seat chassis, characterized in that: include: chassis brackets; a back connecting bracket, the back connecting bracket being arranged at the rear end of the chassis bracket and being rotatable relative to the chassis bracket between a first position and a second position about a rotation axis extending left and right, Wherein, at least one of the chassis bracket and the back connecting bracket forms a limiting structure, and the limiting structure is configured to limit the rotation of the back connecting bracket relative to the chassis bracket when the back connecting bracket is located in the first position and / or the second position.
2. The seat chassis according to claim 1, characterized in that The limiting structure includes a limiting groove and a limiting protrusion, one of the limiting groove and the limiting protrusion is formed on the chassis bracket and the other is formed on the back connecting bracket, and the limiting protrusion can be movably fitted in the limiting groove. When the back connecting bracket is located at the first position and / or the second position, the limiting protrusion abuts against the inner wall of the limiting groove.
3. The seat chassis according to claim 2, characterized in that The inner wall of the limiting groove includes a first side wall and a second side wall that are not coplanar. When the back connecting bracket is in the first position, the limiting protrusion abuts against the first side wall. When the back connecting bracket is in the second position, the limiting protrusion abuts against the second side wall.
4. The seat chassis according to claim 3, characterized in that The first side wall is connected to the second side wall and is arranged at an angle.
5. The seat chassis according to claim 4, characterized in that The first side wall is connected to the second side wall in an arc shape.
6. The seat chassis according to claim 2, characterized in that The chassis bracket includes two first side plates and at least one first crossbeam, the two first side plates extend up and down and are spaced apart in the left-right direction, and the first crossbeam extends left and right and is connected between the two first side plates. The back connecting bracket includes two second side plates and at least one second crossbeam, the two second side plates extend vertically and are spaced apart from each other, the two second side plates are arranged between the two first side plates, and the second crossbeam extends horizontally and is connected between the two second side plates. Wherein, the rear edge of at least one of the first side plates is recessed forward to form the limiting groove, and the limiting protrusion is formed on one side surface of the second side plate in the thickness direction and protrudes toward the limiting groove.
7. The seat chassis according to claim 6, characterized in that In the left and right directions, the end surface of the limiting protrusion facing away from the second side plate is flush with the edge of the limiting groove facing away from the second side plate, or the end surface of the limiting protrusion facing away from the second side plate exceeds the edge of the limiting groove facing away from the second side plate.
8. The seat chassis according to any one of claims 1 to 7, characterized in that: Also includes: The driving mechanism includes: a driving motor and a push rod, the driving motor is arranged on the chassis bracket, the push rod extends forward and backward, the driving motor is connected to the front end of the push rod for driving the push rod to move forward and backward, the rear end of the push rod is hinged to the back connecting bracket, and the driving motor pushes the back connecting bracket to rotate between the first position and the second position through the push rod.
9. The seat chassis according to claim 8, characterized in that The driving mechanism also includes: a connecting frame and a connecting shaft. The connecting frame is fixed on the back connecting bracket and is U-shaped with the opening facing forward. The rear end of the push rod is formed with an axial hole that passes through the push rod along the radial direction of the push rod. The connecting shaft is passed through the axial hole and both ends are fixed to the connecting frame respectively.
10. A seat, characterized in that: Comprising a seat pan according to any one of claims 1-9.