Folding device with self-locking structure

Abstract

The utility model discloses a folding device with a self-locking structure, which comprises an upper mounting seat, a lower mounting seat and a trigger handle, and is characterized in that the upper mounting seat, the lower mounting seat and the trigger handle are pivoted through a pivoting shaft, the trigger handle is provided with a self-locking block and a driving piece, the upper mounting seat and / or the lower mounting seat are / is provided with a limiting surface, and the self-locking block is arranged on the limiting surface. The self-locking block can extend out of or retract into the trigger piece; when the driving piece pushes the self-locking block to extend out of the trigger piece, the limiting surface prevents the self-locking block from rotating so as to prevent the trigger piece from rotating; and when the self-locking block retracts into the trigger, the trigger can rotate relative to the upper mounting seat and the lower mounting seat so as to unlock. The self-locking structure is simple, unlocking of the trigger piece can be achieved by pulling the poking piece, operation is easy, self-locking is stable, and the self-locking structure is safer and more reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of connection structures, in particular to a folding device with a self-locking structure. Background Art

[0002] Folding bicycles, folding electric vehicles and folding scooters all have a folding joint for the seat tube, which can be manually unfolded or folded. When unfolded for use, the handle is flipped to a state parallel to the seat tube, so that the seat tube can stand steadily. After folding, the whole vehicle can be put into a cabin case, a folding bag or a car trunk, which is easy to carry and use.

[0003] There are various forms of folding joint structures installed on the riser in the prior art. However, for the existing folding joint structures, there is a possibility that the trigger is easily loosened during use, resulting in poor stability and reliability. Utility Model Content

[0004] The utility model aims to provide a folding device with a self-locking structure to solve the problem that the trigger of the existing folding structure is easy to loosen as mentioned in the background art.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A folding device with a self-locking structure, comprising an upper mounting seat, a lower mounting seat and a trigger, wherein the upper mounting seat, the lower mounting seat and the trigger are pivotally connected via a pivot shaft, a self-locking block and a driving member are arranged on the trigger, a limited position surface is arranged on the upper mounting seat and / or the lower mounting seat, and the self-locking block can extend outward or retract into the trigger;

[0007] When the driving member pushes the self-locking block to extend out of the trigger, the limiting surface prevents the self-locking block from rotating and thus prevents the trigger from rotating; when the self-locking block retracts the trigger, the trigger can rotate relative to the upper mounting seat and the lower mounting seat and thus release the lock.

[0008] Preferably, the trigger comprises a handle body, the edge of the handle body is provided with a convex edge, the self-locking block and the driving member are arranged in the circumference, the circumference is provided with a slot hole, and the self-locking block can extend through the slot hole under the pushing action of the driving member.

[0009] Preferably, the driving member includes a torsion spring and a toggle member, the handle body is provided with a positioning column or a positioning sleeve, the toggle member is sleeved on the outside of the positioning column or inserted into the positioning sleeve through a positioning shaft, the toggle member can rotate around the positioning column, the toggle member pushes the self-locking block to extend out of the slot or retract, the torsion spring provides power for the toggle member, so that the toggle member keeps pushing the self-locking block to extend out of the slot.

[0010] Preferably, a notch is provided on the surrounding edge, the toggle member includes a driving rod and a toggle rod, the toggle rod extends through the notch, and a positioning assembly is provided between the driving rod and the self-locking block, so that the self-locking block can extend or retract during the rotation of the driving rod.

[0011] Preferably, the torsion spring is sleeved on the outside of the positioning column, one end of the torsion spring is bent and positioned between the driving rod and the toggle rod, and the other end of the torsion spring is bent and abuts against the inner side surface of the surrounding edge.

[0012] Preferably, the positioning assembly comprises a slot and a protrusion, one of the slot and the protrusion is arranged on the self-locking block, and the other is arranged on the driving rod.

[0013] Preferably, the slot is arranged on the self-locking block, the bottom of the slot is arc-shaped to cooperate with the locking protrusion, and the opening of the slot is larger than the locking protrusion.

[0014] Preferably, the upper mounting seat and the lower mounting seat are docked to form an accommodating cavity, and a positioning locking block is provided in the accommodating cavity, and the end of the positioning locking block away from the pivot axis is a locking end, and the locking end moves close to the upper mounting seat and the lower mounting seat to engage with the upper mounting seat and the lower mounting seat to achieve position locking, or the locking end moves toward one side of the pivot axis to disengage from the upper mounting seat and the lower mounting seat to release the lock.

[0015] Preferably, the trigger is connected to the pivot shaft via an eccentric hole, and the trigger has an arcuate surface arranged around the periphery of the eccentric hole, and the arcuate surface abuts against the positioning locking block. When the trigger rotates, the trigger realizes the movement of the positioning locking block toward or away from the pivot shaft through the radial distance difference between the arcuate surface and the eccentric hole.

[0016] Preferably, the locking end of the positioning lock block has a radially extending receiving groove, and a compression spring is provided in the receiving groove. One end of the compression spring abuts against the bottom of the receiving groove, and the other end abuts against the inner side surface of the upper mounting seat or the lower mounting seat. The compression spring provides power for the positioning lock block to move toward the pivot axis.

[0017] Compared with the prior art, the advantages of the utility model are:

[0018] 1. The upper mounting seat and the lower mounting seat are aligned, and the trigger is flipped upward to make the positioning lock block move away from the pivot axis to lock the position of the upper mounting seat and the lower mounting seat. By arranging a self-locking block on the trigger to extend the trigger and abut against the limit surface, the trigger is effectively prevented from flipping downward, thereby realizing self-locking of the trigger, which is not easy to loosen, and has better structural stability and reliability. When unlocking is required, only the toggle piece needs to be pulled to retract the self-locking block. At this time, the trigger can be flipped downward, and the positioning lock block moves toward the pivot axis under the action of the compression spring to release the lock on the upper mounting seat and the lower mounting seat.

[0019] 2. The self-locking structure of the present application is simple, and the trigger can be unlocked by pulling the toggle member. The operation is simple, the self-locking is stable, and it is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a structural schematic diagram of the folding device in the utility model;

[0022] Figure 2 It is a cross-sectional schematic diagram of the folding device in the utility model;

[0023] Figure 3 The schematic diagram of the local structure of the folding device in the utility model is shown in FIG. Figure 1 ;

[0024] Figure 4 The schematic diagram of the local structure of the folding device in the utility model is shown in FIG. Figure 2 ;

[0025] Figure 5 It is a structural schematic diagram of the wrench in the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the handle body in this embodiment;

[0027] Figure 7 This is a schematic diagram of the structure of the driving member and the self-locking block in this embodiment;

[0028] Figure 8 Schematic diagram of the structure of the self-locking block in this embodiment.

[0029] In the figure: 1. upper mounting seat; 11. pivot support foot; 12. first convex ridge; 2. lower mounting seat; 21. limiting surface; 22. second convex ridge; 3. trigger handle; 31. handle body; 311. arc surface; 312. surrounding edge; 313. slot; 314. positioning column; 315. notch; 4. pivot axis; 5. self-locking block; 51. slot; 6. driving member; 61. torsion spring; 62. toggle member; 621. driving rod; 622. toggle rod; 7. positioning locking block; 71. locking end; 711. groove; 712. receiving groove; 72. abutting end; 8. compression spring. DETAILED DESCRIPTION

[0030] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0031] The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0032] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Embodiment 1:

[0036] A folding device with a self-locking structure, combined with Figure 1-8 As shown, it includes an upper mounting seat 1, a lower mounting seat 2 and a trigger 3, and the upper mounting seat 1, the lower mounting seat 2 and the trigger 3 are pivotally connected through a pivot shaft 4. In this embodiment, the two pivot legs 11 of the upper mounting seat 1 are covered on the outer sides of the two pivot legs 11 of the lower mounting seat 2, and the trigger 3 is located at the middle position of the pivot shaft 4.

[0037] In this embodiment, the lower end surface of the upper mounting seat 1 and the upper end surface of the lower mounting seat 2 are flush, and a receiving cavity is formed after docking. A positioning locking block 7 is provided in the receiving cavity. The end of the positioning locking block 7 away from the pivot axis 4 is a locking end 71. The locking end 71 moves close to the upper mounting seat 1 and the lower mounting seat 2, and engages with the upper mounting seat 1 and the lower mounting seat 2 to achieve position locking, or the locking end 71 moves toward one side of the pivot axis 4, disengages from the upper mounting seat 1 and the lower mounting seat 2, thereby releasing the lock.

[0038] Specifically, the locking end 71 of the positioning locking block 7 has a groove 711, the lower edge of the upper mounting seat 1 has a first ridge 12 extending inward, and the upper edge of the lower mounting seat 2 has a second ridge 22 extending inward. When the first ridge 12 and the second ridge 22 are stuck in the groove 711, the positioning locking block 7 locks the position of the upper mounting seat 1 and the lower mounting seat 2 so that the two remain aligned, that is, in an upright state.

[0039] The locking end 71 of the positioning lock block 7 has a radially extending receiving groove 712, in which a compression spring 8 is arranged, one end of the compression spring 8 abuts against the bottom of the receiving groove 712, and the other end abuts against the inner side surface of the upper mounting seat 1, and the compression spring 8 provides power for the positioning lock block 7 to move toward the pivot shaft 4. Those skilled in the art should understand that the other end of the compression spring 8 can also abut against the inner side surface of the lower mounting seat 2.

[0040] The trigger 3 is connected to the pivot shaft 4 through an eccentric hole. The trigger 3 has an arc surface 311 arranged around the periphery of the eccentric hole. The arc surface 311 abuts against the positioning lock block 7. When the trigger 3 rotates, the trigger 3 realizes the movement of the positioning lock block 7 toward or away from the pivot shaft 4 through the radial distance difference between the arc surface 311 and the eccentric hole. In this embodiment, when the trigger 3 is flipped upward to be close to the vertical pipe connected to the upper mounting seat 1, the distance between the arc surface 311 and the eccentric hole is the largest. At this time, the positioning lock block 7 moves away from the pivot shaft 4 and locks the positions of the upper mounting seat 1 and the lower mounting seat 2. When the trigger 3 is flipped downward, the distance between the arc surface 311 and the eccentric hole becomes smaller until the positioning lock block 7 can be released from the lower mounting seat 2, and folding can be achieved. In this embodiment, the positioning lock block 7 includes a locking end 71 with a groove 711, and an abutting end 72 with a concave arc structure abutting against the arc surface 311.

[0041] The trigger 3 is provided with a self-locking block 5 and a driving member 6. When the upper mounting seat 1 and the lower mounting seat 2 are locked, the trigger 3 remains close to the riser and does not loosen. A limited position surface 21 is provided on the upper mounting seat 1 and / or the lower mounting seat 2, and the self-locking block 5 can extend outward or retract the trigger 3; when the driving member 6 pushes the self-locking block 5 to extend the trigger 3, the limited position surface 21 prevents the self-locking block 5 from rotating and thus prevents the trigger 3 from rotating; when the self-locking block 5 retracts the trigger 3, the trigger 3 can rotate relative to the upper mounting seat 1 and the lower mounting seat 2 and thus release the lock.

[0042] Specifically, in this example, a limiting surface 21 is provided on the lower mounting seat 2. When the driving member 6 pushes the self-locking block 5 to extend out of the trigger 3, since the limiting surface 21 is located on the rotation path of the self-locking block 5, it can abut against the self-locking block 5 and prevent the trigger 3 from rotating.

[0043] The trigger handle 3 includes a handle body 31 , the edge of which is provided with a peripheral edge 312 , the self-locking block 5 and the driving member 6 are arranged in the peripheral edge 312 , and a slot 313 is provided on the peripheral edge 312 , and the self-locking block 5 can extend through the slot 313 under the pushing action of the driving member 6 .

[0044] The driving member 6 includes a torsion spring 61 and a toggle member 62. The handle body 31 is provided with a positioning column 314 or a positioning sleeve. The toggle member 62 is sleeved on the outside of the positioning column 314 or inserted into the positioning sleeve through a positioning shaft. The toggle member 62 can rotate around the positioning column 314. The toggle member 62 pushes the self-locking block 5 to extend out of the slot 313 or retract. The torsion spring 61 provides power for the toggle member 62, so that the toggle member 62 keeps pushing the self-locking block 5 to extend out of the slot 313. In this embodiment, the positioning column 314 is an internal threaded column, and the torsion spring 61 and the toggle member 62 are limitedly installed on the trigger 3 by bolts and gaskets.

[0045] As shown in the figure, in this embodiment, two slots 313 are provided, which are horizontally distributed on both sides of the lower part of the trigger 3. The self-locking block 5 is parallel to the pivot shaft 4, and the two ends of the self-locking block 5 are respectively stuck in the slots 313. One end of the self-locking block 5 can extend out of one of the slots 313 under the pushing action of the toggle member 62, but the other end of the self-locking block 5 will not be separated from the slot 313 on the other side, that is, the self-locking block 5 reciprocates in the two slots 313.

[0046] A notch 315 is provided on the surrounding edge 312, and the toggle member 62 includes a driving rod 621 and a toggle rod 622. The toggle rod 622 extends out through the notch 315, so that the user can pull the toggle rod 622 to drive the driving rod 621 to rotate. A positioning assembly is provided between the driving rod 621 and the self-locking block 5, so that the self-locking block 5 can extend or retract during the rotation of the driving rod 621.

[0047] The torsion spring 61 is sleeved on the outside of the positioning column 314, one end of the torsion spring 61 is bent and positioned between the driving rod 621 and the toggle rod 622, and the other end of the torsion spring 61 is bent and abuts against the inner side of the surrounding edge 312. In this embodiment, there is an obtuse angle between the driving rod 621 and the toggle rod 622, and the toggle rod 622 extends upward through the notch 315. One end of the torsion spring 61 is bent and stuck in the obtuse angle, and abuts against the driving rod 621, providing power for the driving rod 621 to push the self-locking block 5 outward, and the other end of the torsion spring 61 abuts against the inner side of the surrounding edge 312, and in this embodiment, it abuts against the inner side of the surrounding edge 312 without the notch 315, so that the torsion spring 61 has a certain torque, which pushes the driving rod 621 to rotate and pushes the self-locking block 5 to keep extending out of the slot 313.

[0048] The positioning assembly includes a slot 51 and a protrusion, one of which is provided on the self-locking block 5, and the other is provided on the driving rod 621. Specifically, in this embodiment, the slot 51 is provided on the self-locking block 5, the bottom of the slot 51 is arc-shaped and matches the protrusion at the end of the driving rod 621, and the inner walls on both sides of the opening of the slot 51 are perpendicular to the movement path of the self-locking block 5 on one side and inclined on the other side, so that the opening of the slot 51 is larger than the protrusion, and the inclined inner wall is closer to the slot hole 313 extending from the self-locking block 5.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A folding device with a self-locking structure, comprising an upper mounting seat (1), a lower mounting seat (2) and a trigger (3), characterized in that: The upper mounting seat (1), the lower mounting seat (2) and the trigger (3) are pivotally connected via a pivot shaft (4); a self-locking block (5) and a driving member (6) are provided on the trigger (3); a limited position surface (21) is provided on the upper mounting seat (1) and / or the lower mounting seat (2); and the self-locking block (5) can extend outward or retract into the trigger (3); When the driving member (6) pushes the self-locking block (5) to extend out of the trigger (3), the limiting surface (21) prevents the self-locking block (5) from rotating and thereby prevents the trigger (3) from rotating; when the self-locking block (5) retracts the trigger (3), the trigger (3) can rotate relative to the upper mounting seat (1) and the lower mounting seat (2) and thereby release the lock.

2. A folding device with a self-locking structure according to claim 1, characterized in that: The trigger handle (3) comprises a handle body (31), the edge of the handle body (31) is provided with a convex edge (312), the self-locking block (5) and the driving member (6) are arranged in the convex edge (312), the convex edge (312) is provided with a slot hole (313), and the self-locking block (5) can be extended through the slot hole (313) under the pushing action of the driving member (6).

3. A folding device with a self-locking structure according to claim 2, characterized in that: The driving member (6) comprises a torsion spring (61) and a toggle member (62); the handle body (31) is provided with a positioning column (314) or a positioning sleeve; the toggle member (62) is sleeved on the outside of the positioning column (314) or inserted into the positioning sleeve through a positioning shaft; the toggle member (62) can rotate around the positioning column (314); the toggle member (62) pushes the self-locking block (5) to extend out of the slot hole (313) or retract; the torsion spring (61) provides power for the toggle member (62) so that the toggle member (62) keeps pushing the self-locking block (5) to extend out of the slot hole (313).

4. A folding device with a self-locking structure according to claim 3, characterized in that: A notch (315) is provided on the surrounding edge (312); the toggle member (62) comprises a driving rod (621) and a toggle rod (622); the toggle rod (622) extends through the notch (315); and a positioning assembly is provided between the driving rod (621) and the self-locking block (5), so that the self-locking block (5) can extend or retract during the rotation of the driving rod (621).

5. The folding device with a self-locking structure according to claim 4, characterized in that: The torsion spring (61) is sleeved on the outside of the positioning column (314), one end of the torsion spring (61) is bent and positioned between the driving rod (621) and the toggle rod (622), and the other end of the torsion spring (61) is bent and abuts against the inner side of the surrounding edge (312).

6. The folding device with a self-locking structure according to claim 4, characterized in that: The positioning assembly comprises a locking groove (51) and a locking protrusion, wherein one of the locking groove (51) and the locking protrusion is arranged on the self-locking block (5), and the other is arranged on the driving rod (621).

7. A folding device with a self-locking structure according to claim 6, characterized in that: The clamping groove (51) is arranged on the self-locking block (5); the bottom of the clamping groove (51) is arc-shaped and matches with the clamping protrusion; the opening of the clamping groove (51) is larger than the clamping protrusion.

8. A folding device with a self-locking structure according to any one of claims 1 to 7, characterized in that: The upper mounting seat (1) and the lower mounting seat (2) are connected to form an accommodating cavity, and a positioning locking block (7) is arranged in the accommodating cavity. The end of the positioning locking block (7) away from the pivot shaft (4) is a locking end (71). The locking end (71) moves close to the upper mounting seat (1) and the lower mounting seat (2) to engage with the upper mounting seat (1) and the lower mounting seat (2) to achieve position locking, or the locking end (71) moves toward one side of the pivot shaft (4) to disengage from the upper mounting seat (1) and the lower mounting seat (2) to release the lock.

9. The folding device with a self-locking structure according to claim 8, characterized in that: The trigger (3) is connected to the pivot shaft (4) via an eccentric hole, and the trigger (3) has an arc surface (311) arranged around the periphery of the eccentric hole, and the arc surface (311) abuts against the positioning lock block (7). When the trigger (3) rotates, the trigger (3) realizes the movement of the positioning lock block (7) toward or away from the pivot shaft (4) through the difference in radial distance between the arc surface (311) and the eccentric hole.

10. The folding device with a self-locking structure according to claim 9, characterized in that: The locking end (71) of the positioning lock block (7) has a radially extending receiving groove (712), and a compression spring (8) is arranged in the receiving groove (712). One end of the compression spring (8) abuts against the bottom of the receiving groove (712), and the other end abuts against the inner side surface of the upper mounting seat (1) or the lower mounting seat (2). The compression spring (8) provides power for the positioning lock block (7) to move toward the pivot shaft (4).

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