Folding seat locking mechanism

Abstract

The utility model discloses a folding seat locking mechanism which comprises a seat plate, two opposite edges of the seat plate are bent to form bent portions, the bent portions are provided with arc-shaped sliding grooves, a connecting rod welding piece, an auxiliary connecting rod and a seat fixing support are arranged below the bent portions, the connecting rod welding piece is provided with a connecting rod main beam, and the connecting rod main beam is provided with an auxiliary connecting rod. The upper end of the connecting rod main beam and the upper end of the auxiliary connecting rod are in shaft connection with the bending part, the lower end of the connecting rod main beam and the lower end of the auxiliary connecting rod are in shaft connection with the seat fixing support, a supporting rod is arranged below the seat plate, the two ends of the supporting rod are in shaft connection with the connecting rod main beam, and a rotating shaft between the supporting rod and the connecting rod main beam is arranged in the sliding groove. The middle of the lock hook is in shaft connection with the bending portion, and the tail end of the lock hook is connected with the bending portion through a lock hook spring. Therefore, the structure is optimized, the force distribution is improved, and the folding degree of freedom of the seat is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of vehicle engineering, in particular to a folding seat locking mechanism. Background Art

[0002] The folding seat of a mobility scooter can be folded when not in use, thereby creating more space. However, the current design faces two problems. First, when the seat is folded and fixed, the locking part is subjected to significant stress. Second, the folding angle of the seat is limited to 90 degrees, which in turn increases the stress load on the locking part. Under these combined effects, the durability and stability of the folding seat may be reduced. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the above-mentioned technology at least to a certain extent.

[0004] To this end, one object of the utility model is to provide a folding seat locking mechanism, comprising: a seat plate, two opposite edges of the seat plate are bent to form a bent portion, and both of the two bent portions are provided with an arc-shaped slide groove;

[0005] A connecting rod assembly weldment, a secondary connecting rod and a seat fixing support are arranged below each of the two bending parts, the connecting rod assembly weldment is provided with a connecting rod main beam, the upper end of the connecting rod main beam and the upper end of the secondary connecting rod are respectively connected to the bending part axis, and the lower end of the connecting rod main beam and the lower end of the secondary connecting rod are respectively connected to the seat fixing support axis;

[0006] A support rod is provided below the seat plate, and both ends of the support rod are respectively connected to the two connecting rod main beam shafts, and a rotating shaft between the support rod and the connecting rod main beam is extended and arranged in the slide groove;

[0007] A locking hook is provided on one of the two bending parts, the middle part of the locking hook is connected to the bending part axis, and the tail end of the locking hook is connected to the bending part through a locking hook spring. When the seat plate, the connecting rod welded component and the secondary connecting rod are lifted, the hook head of the locking hook clamps the rotating shaft between the support rod and the connecting rod main beam. When the seat plate, the connecting rod welded component and the secondary connecting rod fall, the hook head of the locking hook is separated from the rotating shaft between the support rod and the connecting rod main beam.

[0008] The folding seat locking mechanism according to the embodiment of the utility model has the following beneficial effects:

[0009] (1) Structural optimization and improved force distribution. A unique locking system combining connecting rods and support rods is adopted to disperse the force to components such as the seat plate, connecting rod assembly weldment and auxiliary connecting rod, rather than concentrating it on the locking hook, thereby effectively reducing the burden on the locking hook and improving the stability and durability of the overall structure.

[0010] (2) Enhanced seat folding freedom: The design allows the seat to fold to an angle greater than the traditional 90-degree limit. This improvement not only increases the flexibility of seat use, but also relieves the stress on the lock hook, ensuring long-term reliability and safety.

[0011] In addition, the folding seat locking mechanism proposed in the above embodiment of the utility model may also have the following additional technical features:

[0012] In one embodiment of the utility model, the connecting rod assembly weldment is further provided with: a connecting rod long spacer, a connecting rod middle spacer and a connecting rod short spacer, wherein:

[0013] The long connecting rod spacer, the middle connecting rod spacer and the short connecting rod spacer are sequentially arranged on the connecting rod main beam, the rotating shaft between the support rod and the connecting rod main beam passes through the long connecting rod spacer, the rotating shaft between the bending portion and the connecting rod main beam passes through the middle connecting rod spacer, and the rotating shaft between the seat fixing support and the connecting rod main beam passes through the short connecting rod spacer.

[0014] In one embodiment of the utility model, the rotating shaft between the support rod and the connecting rod main beam, the rotating shaft between the bending portion and the connecting rod main beam, and the rotating shaft between the seat fixing support and the connecting rod main beam are all composed of hexagon socket head screws and hexagonal nuts.

[0015] In one embodiment of the utility model, the main body of the connecting rod main beam is a metal tube structure, and the main body of the auxiliary connecting rod is a metal plate structure.

[0016] In one embodiment of the present invention, in the vertical direction, the height of the lower end of the auxiliary connecting rod is higher than the height of the lower end of the connecting rod main beam.

[0017] In an embodiment of the present invention, two ends of the lock hook spring are respectively connected to the lock hook and the bent portion through self-tapping screws.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0020] Figure 1 The structure of the folding seat locking mechanism of one embodiment of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 2The structure of the folding seat locking mechanism of one embodiment of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 3 The structure of the folding seat locking mechanism of one embodiment of the utility model is shown in FIG. Figure 3 ;

[0023] Figure 4 It is a schematic structural diagram of a support rod, a connecting rod assembly weldment and a secondary connecting rod of a folding seat locking mechanism according to an embodiment of the utility model;

[0024] Figure 5 It is a structural schematic diagram of a connecting rod assembly weldment of a folding seat locking mechanism according to an embodiment of the utility model;

[0025] Figure 6 The use effect of the folding seat locking mechanism of one embodiment of the utility model Figure 1 ;

[0026] Figure 7 The use effect of the folding seat locking mechanism of one embodiment of the utility model Figure 2 ;

[0027] Figure 8 The use effect of the folding seat locking mechanism of one embodiment of the utility model Figure 3 ;

[0028] As shown in the figure:

[0029] 1- Seat plate;

[0030] 2- bending part;

[0031] 3-chute;

[0032] 4-connecting rod assembly weldment, 41-connecting rod main beam, 42-connecting rod long spacer, 43-connecting rod middle spacer, 44-connecting rod short spacer;

[0033] 5-Secondary connecting rod;

[0034] 6-seat fixing support;

[0035] 7- Support rod;

[0036] 8-lock hook;

[0037] 9-lock hook spring;

[0038] 10- Seats. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0040] The folding seat locking mechanism of the embodiment of the present utility model will be described below with reference to the accompanying drawings.

[0041] Specifically, if Figure 6 , Figure 7 and Figure 8 As shown, the folding seat locking mechanism disclosed in the present invention can be used for a mobility scooter, and the seat 10 is installed on the seat plate 1.

[0042] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a folding seat locking mechanism comprises: a seat plate 1, two opposite edges of the seat plate 1 are bent to form a bent portion 2, and the two bent portions 2 are both provided with an arc-shaped slide groove 3;

[0043] A connecting rod assembly weldment 4, a secondary connecting rod 5 and a seat fixing support 6 are arranged below each of the two bending parts 2. The connecting rod assembly weldment 4 is provided with a connecting rod main beam 41. The upper end of the connecting rod main beam 41 and the upper end of the secondary connecting rod 5 are respectively connected to the axis of the bending part 2, and the lower end of the connecting rod main beam 41 and the lower end of the secondary connecting rod 5 are respectively connected to the axis of the seat fixing support 6;

[0044] A support rod 7 is provided below the seat plate 1, and both ends of the support rod 7 are respectively connected to the two connecting rod main beams 41, and the rotating shaft between the support rod 7 and the connecting rod main beam 41 is extended and arranged in the slide groove 3;

[0045] A lock hook 8 is provided on one of the two bent parts 2, the middle part of the lock hook 8 is axially connected to the bent part 2, the tail end of the lock hook 8 is connected to the bent part 2 through a lock hook spring 9, and a handle can be provided at the tail end of the lock hook 8;

[0046] When the seat plate 1, the connecting rod assembly weldment 4 and the secondary connecting rod 5 are lifted, the hook head of the locking hook 8 clamps the rotating shaft between the support rod 7 and the connecting rod main beam 41. When the seat plate 1, the connecting rod assembly weldment 4 and the secondary connecting rod 5 fall, the hook head of the locking hook 8 disengages from the rotating shaft between the support rod 7 and the connecting rod main beam 41.

[0047] like Figure 5 As shown, the connecting rod assembly weldment 4 is also provided with: a connecting rod long spacer 42, a connecting rod middle spacer 43 and a connecting rod short spacer 44, wherein:

[0048] The long connecting rod spacer 42, the middle connecting rod spacer 43 and the short connecting rod spacer 44 are arranged on the connecting rod main beam 41 in sequence, the rotating shaft between the support rod 7 and the connecting rod main beam 41 passes through the long connecting rod spacer 42, the rotating shaft between the bending part 2 and the connecting rod main beam 41 passes through the middle connecting rod spacer 43, and the rotating shaft between the seat fixed support 6 and the connecting rod main beam 41 passes through the short connecting rod spacer 44.

[0049] The rotating shaft between the support rod 7 and the connecting rod main beam 41, the rotating shaft between the bending portion 2 and the connecting rod main beam 41, and the rotating shaft between the seat fixing support 6 and the connecting rod main beam 41 are all composed of hexagon socket head screws and hexagon nuts.

[0050] The main body of the connecting rod main beam 41 is a metal pipe structure, and the main body of the auxiliary connecting rod 5 is a metal plate structure.

[0051] In the vertical direction, the height of the lower end of the auxiliary link 5 is higher than the height of the lower end of the link main beam 41 .

[0052] The two ends of the lock hook spring 9 are connected to the lock hook 8 and the bent portion 2 respectively through self-tapping screws.

[0053] Specifically, if Figure 6 and Figure 7 As shown, the relevant staff installs the folding seat locking mechanism on the scooter through the seat fixing support 6. When the folding seat locking mechanism is needed, the relevant staff folds the seat 10 from the front of the scooter toward the rear. During this process, the seat 10 is lifted under the linkage of the connecting rod main beam 41 and the auxiliary connecting rod 5. When the connecting rod main beam 41 and the auxiliary connecting rod 5 are folded to the maximum angle of 110 degrees, the hook head of the locking hook 8 clamps the rotating shaft between the support rod 7 and the connecting rod main beam 41;

[0054] When the folding seat locking mechanism needs to be stored, the handle at the tail end of the lock hook 8 is turned clockwise. During this process, the hook head of the lock hook 8 will be separated from the rotating shaft between the support rod 7 and the connecting rod main beam 41. The relevant staff will fold the seat 10 from the rear of the vehicle toward the front of the vehicle. The seat 10 falls under the linkage of the connecting rod main beam 41 and the secondary connecting rod 5 until the seat 10, the connecting rod main beam 41 and the secondary connecting rod 5 are completely folded and laid flat on the vehicle.

[0055] To summarize, the folding seat locking mechanism according to the utility model disclosed herein and the folding seat locking mechanism according to the embodiment of the utility model have the following beneficial effects: structural optimization and improved force distribution, a unique locking system combining a connecting rod and a supporting rod is adopted to disperse the force to components such as the seat plate, the connecting rod assembly weldment and the auxiliary connecting rod, rather than concentrating on the locking hook, thereby effectively reducing the burden on the locking hook, improving the stability and durability of the overall structure, enhancing the freedom of seat folding, and the design allows the seat folding angle to exceed the traditional 90-degree limit. This improvement not only increases the flexibility of seat use, but also relieves the stress of the locking hook, ensuring the long-term reliability and safety and other beneficial effects.

[0056] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A folding seat locking mechanism, characterized in that: include: A seat plate (1), wherein two opposite edges of the seat plate (1) are bent to form a bent portion (2), and both of the two bent portions (2) are provided with an arc-shaped sliding groove (3); A connecting rod assembly weldment (4), a secondary connecting rod (5) and a seat fixing support (6) are arranged below each of the two bending parts (2); the connecting rod assembly weldment (4) is provided with a connecting rod main beam (41); the upper end of the connecting rod main beam (41) and the upper end of the secondary connecting rod (5) are respectively connected to the axis of the bending part (2); the lower end of the connecting rod main beam (41) and the lower end of the secondary connecting rod (5) are respectively connected to the axis of the seat fixing support (6); A support rod (7) is arranged below the seat plate (1), and the two ends of the support rod (7) are respectively connected to the two connecting rod main beams (41) shafts, and the rotating shaft between the support rod (7) and the connecting rod main beam (41) is extended and arranged in the slide groove (3); A locking hook (8) is provided on one of the two bending parts (2), the middle part of the locking hook (8) is connected to the axis of the bending part (2), and the tail end of the locking hook (8) is connected to the bending part (2) through a locking hook spring (9). When the seat plate (1), the connecting rod assembly weldment (4) and the secondary connecting rod (5) are lifted, the hook head of the locking hook (8) clamps the rotating shaft between the support rod (7) and the connecting rod main beam (41); when the seat plate (1), the connecting rod assembly weldment (4) and the secondary connecting rod (5) fall, the hook head of the locking hook (8) is separated from the rotating shaft between the support rod (7) and the connecting rod main beam (41).

2. The folding seat locking mechanism according to claim 1, characterized in that: The connecting rod assembly weldment (4) is further provided with: a connecting rod long spacer (42), a connecting rod middle spacer (43) and a connecting rod short spacer (44), wherein: The connecting rod long spacer sleeve (42), the connecting rod middle spacer sleeve (43) and the connecting rod short spacer sleeve (44) are sequentially arranged on the connecting rod main beam (41); the rotating shaft between the support rod (7) and the connecting rod main beam (41) passes through the connecting rod long spacer sleeve (42); the rotating shaft between the bending portion (2) and the connecting rod main beam (41) passes through the connecting rod middle spacer sleeve (43); and the rotating shaft between the seat fixing support (6) and the connecting rod main beam (41) passes through the connecting rod short spacer sleeve (44).

3. The folding seat locking mechanism according to claim 2, characterized in that: The rotating shaft between the support rod (7) and the connecting rod main beam (41), the rotating shaft between the bent portion (2) and the connecting rod main beam (41), and the rotating shaft between the seat fixing support (6) and the connecting rod main beam (41) are all composed of hexagon socket head screws and hexagon nuts.

4. The folding seat locking mechanism according to claim 1, characterized in that: The main body of the connecting rod main beam (41) is a metal tube structure, and the main body of the auxiliary connecting rod (5) is a metal plate structure.

5. The folding seat locking mechanism according to claim 1, characterized in that: In the vertical direction, the height of the lower end of the auxiliary connecting rod (5) is higher than the height of the lower end of the connecting rod main beam (41).

6. The folding seat locking mechanism according to claim 1, characterized in that: The two ends of the lock hook spring (9) are respectively connected to the lock hook (8) and the bent portion (2) via self-tapping screws.

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