Folding device

Abstract

The utility model discloses a folding device, which comprises an upper mounting seat, a lower mounting seat and a trigger, the upper mounting seat, the lower mounting seat and the trigger are pivoted through a pivot shaft, the trigger is provided with a telescopic locking block, the lower mounting seat is provided with a limiting surface, the upper mounting seat is provided with a push rod on one side of the trigger, and the lower mounting seat is provided with a limiting surface on the limiting surface. Or the upper mounting seat is provided with a limiting surface, and the lower mounting seat is provided with a push rod on one side of the trigger piece; when the upper mounting seat and the lower mounting seat are closed and locked, the telescopic locking block extends out of the trigger, and the limiting surface prevents the telescopic locking block from rotating so as to prevent the trigger from rotating; the push rod pushes the telescopic locking block to retract to the trigger, and the trigger can rotate relative to the upper mounting seat and the lower mounting seat so as to unlock. The telescopic locking block is pushed by the push rod arranged on the upper mounting seat and retracts into the trigger, so that the upper mounting seat and the lower mounting seat can be unlocked, and the structure is more stable and reliable.

Description

Technical Field

[0001] The utility model relates to a connecting structure, in particular to a folding device. 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 mechanisms installed on the seat tube in the prior art, but many folding mechanisms are easily unlocked or loosened due to misoperation for the sake of convenience. Therefore, considering the safety of folding bicycles, folding electric vehicles and scooters, a folding mechanism with a self-locking structure is urgently needed. 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 comprises 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 telescopic locking block is provided on the trigger, a limited position surface is provided on the lower mounting seat, a push rod is provided on one side of the trigger on the upper mounting seat, or a limited position surface is provided on the upper mounting seat, and a push rod is provided on one side of the trigger on the lower mounting seat;

[0007] When the upper mounting seat and the lower mounting seat are locked together, the telescopic locking block extends out of the trigger, and the limiting surface prevents the telescopic locking block from rotating and thus prevents the trigger from rotating; the push rod pushes the telescopic locking block to retract to the trigger, and the trigger can rotate relative to the upper mounting seat and the lower mounting seat to release the lock.

[0008] Preferably, a mounting groove is provided on one side of the trigger, the mounting groove is parallel to the pivot axis, one end of the telescopic locking block is inserted into the mounting groove, and a first compression spring is provided between the mounting groove and the bottom of the mounting groove.

[0009] Preferably, the upper mounting seat is provided with a through hole, the push rod is inserted into the through hole, and both ends of the push rod protrude from the upper mounting seat.

[0010] Preferably, a second compression spring is provided between the push rod and the upper mounting seat, and the second compression spring drives the push rod away from the telescopic locking block.

[0011] Preferably, the push rod comprises a push block, a rod body and a positioning piece connected in sequence, the push block is located outside the through hole and can abut against the telescopic locking block, and the positioning piece is located outside the through hole and has a positioning boss with an outer diameter greater than that of the rod body;

[0012] The through hole is a stepped hole including a first hole portion and a second hole portion, the aperture of the first hole portion is larger than the aperture of the second hole portion, the inner diameter of the second compression spring is larger than the aperture of the second hole portion, the second compression spring is sleeved on the outer side of the rod body, and one end of the second compression spring abuts against the step surface of the stepped hole, and the other end of the second compression spring abuts against the positioning boss.

[0013] Preferably, the positioning member is a nut, a cap or a screw, and the rod body has an external thread or an internal thread hole.

[0014] Preferably, there is a distance between the push block and the limiting surface.

[0015] Preferably, the push rod and the through hole are arranged parallel to the pivot axis.

[0016] 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. The positioning locking block is connected to or abuts against the trigger, and the positioning locking block is docked and locked with the upper mounting seat and the lower mounting seat by rotating the trigger, or the upper mounting seat and the lower mounting seat are unlocked by rotating the trigger.

[0017] Preferably, a limiting assembly is arranged between the positioning lock block and the upper mounting seat, and / or a limiting assembly is arranged between the positioning lock block and the lower mounting seat, and the limiting assembly includes a slider and a slide groove, one of the slider and the slide groove is arranged on the positioning lock block, and the other is arranged on the upper mounting seat and / or the lower mounting seat.

[0018] Compared with the prior art, the advantages of the utility model are:

[0019] The upper mounting seat and the lower mounting seat are matched, and the trigger is flipped upward to make the positioning lock block move away from the pivot axis, and the positions of the upper mounting seat and the lower mounting seat are locked. By setting a telescopic lock block on the trigger to extend the trigger and abut against the limit surface, the trigger is effectively prevented from flipping downward, and the trigger is self-locking, not easy to loosen, and has better structural stability and reliability. When unlocking is required, it is necessary to push the push rod on the upper mounting seat, and the push rod pushes the telescopic lock block and retracts the telescopic lock block into the trigger. 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, and the lock on the upper mounting seat and the lower mounting seat is released. When the trigger of this structure is in a locked state, the trigger will not flip downward even if it is operated, and the structure is more stable and 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 The structure of the folding device in the utility model is shown in FIG. Figure 1 ;

[0022] Figure 2 The structure of the folding device in the utility model is shown in FIG. Figure 2 ;

[0023] Figure 3 for Figure 2 Schematic diagram of the cross section at AA in the middle;

[0024] Figure 4 for Figure 2 Schematic diagram of the cross section at BB;

[0025] Figure 5 for Figure 2 Schematic diagram of the cross section at DD in the middle;

[0026] Figure 6 for Figure 2 Schematic diagram of the cross section at CC;

[0027] Figure 7 It is an exploded schematic diagram of the wrench in the utility model;

[0028] Figure 8 Schematic diagram of the installation of the push rod and the upper mounting seat in this embodiment.

[0029] In the figure: 1. upper mounting seat; 11. through hole; 111. first hole portion; 112. second hole portion; 12. accommodating chamber; 13. slide groove; 14. pivot support foot; 15. first convex ridge; 2. lower mounting seat; 21. second convex ridge; 3. trigger; 31. mounting groove; 32. arc surface; 4. pivot axis; 5. telescopic locking block; 51. first compression spring; 6. limiting surface; 7. push rod; 71. push block; 72. rod body; 73. positioning member; 8. second compression spring; 9. positioning locking block; 91. slider; 92. locking end; 921. groove; 93. compression spring; 94. abutting end. 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, as shown in combination with 1-8, includes an upper mounting seat 1, a lower mounting seat 2 and a trigger 3. The upper mounting seat 1, the lower mounting seat 2 and the trigger 3 are pivotally connected by a pivot shaft 4. In this embodiment, the two pivot legs 14 of the upper mounting seat 1 are covered on the outer sides of the two pivot legs 14 of the lower mounting seat 2, and the trigger 3 is located at the middlemost position of the pivot shaft 4.

[0037] In this embodiment, the lower end surface of the upper mounting seat 1 is flush with the upper end surface of the lower mounting seat 2, and a receiving cavity 12 is formed after docking. A positioning locking block 9 is provided in the receiving cavity 12. The end of the positioning locking block 9 away from the pivot axis 4 is a locking end 92. The locking end 92 moves toward the end of the upper mounting seat 1 and the lower mounting seat 2 away from the pivot axis 4, and docks with the upper mounting seat 1 and the lower mounting seat 2 to achieve position locking, or the locking end 92 is moved toward the side of the pivot axis 4 by rotating the trigger 3, disengaging from the upper mounting seat 1 and the lower mounting seat 2 to release the lock.

[0038] Specifically, the locking end 92 of the positioning locking block 9 has a groove 921, the lower edge of the upper mounting seat 1 has a first ridge 15 extending inward, and the upper edge of the lower mounting seat 2 has a second ridge 21 extending inward. When the first ridge 15 and the second ridge 21 are stuck in the groove 921, the positioning locking block 9 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 trigger 3 is connected to the pivot shaft 4 through an eccentric hole. The trigger 3 has an arc surface 32 arranged around the periphery of the eccentric hole. The arc surface 32 abuts against the positioning lock block 9. When the trigger 3 rotates, the trigger 3 realizes the movement of the positioning lock block 9 toward or away from the pivot shaft 4 through the difference in radial distance between the arc surface 32 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 32 and the eccentric hole is the largest. At this time, the positioning lock block 9 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 32 and the eccentric hole becomes smaller until the positioning lock block 9 can be released from the lower mounting seat 2, and folding can be achieved. In this embodiment, the positioning lock block 9 includes a locking end 92 with a groove 921, and an abutting end 94 with a concave arc structure abutting against the arc surface 32.

[0040] A limiting component is set between the positioning lock block 9 and the upper mounting seat 1, and / or a limiting component is set between the positioning lock block 9 and the lower mounting seat 2, and the limiting component includes a slider 91 and a slide groove 13, one of the slider 91 and the slide groove 13 is set on the positioning lock block 9, and the other is set on the upper mounting seat 1 and / or the lower mounting seat 2.

[0041] In this embodiment, a slider 91 is provided on the positioning lock block 9. The slider 91 is located on the upper end surface of the positioning lock block 9 and on the side of the upper end surface that is biased toward the pivot axis 4. The slide groove 13 is located on the lower surface of the upper mounting seat 1. The slide groove 13 is closed at one end away from the pivot axis 4. A compression spring 93 is provided in the slide groove 13. One end of the compression spring 93 abuts against the slider 91, and the other end abuts against the closed end of the slide groove 13. After the trigger 3 is flipped downward, the compression spring 93 provides a reset force for the positioning lock block 9, so that the groove 921 of the positioning lock block 9 is disengaged from the first convex ridge 15 and the second convex ridge 21.

[0042] A telescopic locking block 5 is provided on the trigger 3, a limiting surface 6 is provided on the lower mounting seat 2, and a push rod 7 is provided on one side of the trigger 3 of the upper mounting seat 1. When the upper mounting seat 1 and the lower mounting seat 2 are locked together, the telescopic locking block 5 extends out of the trigger 3, and the limiting surface 6 is located on the rotation path of the telescopic locking block 5, preventing the telescopic locking block 5 from rotating and thus preventing the trigger 3 from rotating, and the trigger 3 remains close to the riser without loosening; the push rod 7 pushes the telescopic locking block 5 to retract to the trigger 3, and the trigger 3 can rotate relative to the upper mounting seat 1 and the lower mounting seat 2 to unlock.

[0043] In another embodiment, a limited surface 6 is disposed on the upper mounting seat 1 , and a push rod 7 is disposed on one side of the trigger 3 of the lower mounting seat 2 .

[0044] A mounting groove 31 is provided on one side of the trigger 3, and the mounting groove 31 is parallel to the pivot axis 4. One end of the telescopic locking block 5 is inserted into the mounting groove 31, and a first compression spring 51 is provided between the bottom of the mounting groove 31. The first compression spring 51 drives the telescopic locking block 5 to remain extended from the trigger 3. Only when the telescopic locking block 5 is subjected to external force, the first compression spring 51 is compressed and the telescopic locking block 5 retracts to the trigger 3.

[0045] The upper mounting seat 1 is provided with a through hole 11, and the push rod 7 is inserted into the through hole 11. The push rod 7 and the through hole 11 are arranged parallel to the pivot shaft 4, and both ends of the push rod 7 protrude from the upper mounting seat 1. There is a distance between the push block 71 and the limiting surface 6. A second compression spring 8 is arranged between the push rod 7 and the upper mounting seat 1, and the second compression spring 8 drives the push rod 7 away from the telescopic lock block 5.

[0046] Specifically, the push rod 7 includes a push block 71 , a rod body 72 and a positioning member 73 which are connected in sequence. The push block 71 is located outside the through hole 11 and can abut against the telescopic locking block 5 . The positioning member 73 is located outside the through hole 11 and has a positioning boss with an outer diameter greater than that of the rod body 72 .

[0047] The through hole 11 is a stepped hole including a first hole portion 111 and a second hole portion 112. The aperture of the first hole portion 111 is larger than the aperture of the second hole portion 112. The inner diameter of the second compression spring 8 is larger than the aperture of the second hole portion 112. The second compression spring 8 is sleeved on the outside of the rod body 72, and one end of the second compression spring 8 abuts against the step surface of the stepped hole, and the other end of the second compression spring 8 abuts against the positioning boss.

[0048] The positioning member 73 may be a nut, a cap or a screw, and the rod body 72 has an external thread or an internal thread hole.

[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 solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A folding device, comprising an upper mounting seat (1), a lower mounting seat (2) and a trigger (3), wherein the upper mounting seat (1), the lower mounting seat (2) and the trigger (3) are pivotally connected via a pivot shaft (4), characterized in that: The trigger (3) is provided with a telescopic locking block (5), the lower mounting seat (2) is provided with a limited position surface (6), and the upper mounting seat (1) is provided with a push rod (7) on one side of the trigger (3); or the upper mounting seat (1) is provided with a limited position surface (6), and the lower mounting seat (2) is provided with a push rod on one side of the trigger (3); When the upper mounting seat (1) and the lower mounting seat (2) are locked together, the telescopic locking block (5) extends out of the trigger (3), and the limiting surface (6) prevents the telescopic locking block (5) from rotating, thereby preventing the trigger (3) from rotating; the push rod (7) pushes the telescopic locking block (5) to retract to the trigger (3), and the trigger (3) can rotate relative to the upper mounting seat (1) and the lower mounting seat (2) to release the lock.

2. A folding device according to claim 1, characterized in that: A mounting groove (31) is provided on one side of the trigger (3), and the mounting groove (31) is parallel to the pivot axis (4). One end of the telescopic locking block (5) is inserted into the mounting groove (31), and a first compression spring (51) is provided between the mounting groove (31) and the bottom of the mounting groove (31).

3. A folding device according to claim 1, characterized in that: The upper mounting seat (1) is provided with a through hole (11), the push rod (7) is inserted into the through hole (11), and both ends of the push rod (7) protrude from the upper mounting seat (1).

4. A folding device according to claim 3, characterized in that: A second compression spring (8) is provided between the push rod (7) and the upper mounting seat (1), and the second compression spring (8) drives the push rod (7) away from the telescopic locking block (5).

5. A folding device according to claim 4, characterized in that: The push rod (7) comprises a push block (71), a rod body (72) and a positioning member (73) which are connected in sequence, the push block (71) being located outside the through hole (11) and being able to abut against the telescopic locking block (5), and the positioning member (73) being located outside the through hole (11) and having a positioning boss having an outer diameter greater than that of the rod body (72); The through hole (11) is a stepped hole including a first hole portion (111) and a second hole portion (112); the hole diameter of the first hole portion (111) is larger than the hole diameter of the second hole portion (112); the inner diameter of the second compression spring (8) is larger than the hole diameter of the second hole portion (112); the second compression spring (8) is sleeved on the outer side of the rod body (72); one end of the second compression spring (8) abuts against the step surface of the stepped hole; and the other end of the second compression spring (8) abuts against the positioning boss.

6. A folding device according to claim 5, characterized in that: The positioning member (73) is a nut, a cap or a screw, and the rod body (72) has an external thread or an internal thread hole.

7. A folding device according to claim 5, characterized in that: There is a distance between the push block (71) and the limiting surface (6).

8. A folding device according to claim 3, characterized in that: The push rod (7) and the through hole (11) are arranged parallel to the pivot axis (4).

9. A folding device according to claim 1, characterized in that: The upper mounting seat (1) and the lower mounting seat (2) are butted together to form a receiving cavity (12), a positioning locking block (9) is provided in the receiving cavity (12), the positioning locking block (9) is connected to or abuts against the trigger (3), and the positioning locking block (9) is butted against and locked with the upper mounting seat (1) and the lower mounting seat (2) by rotating the trigger (3), or the locking of the upper mounting seat (1) and the lower mounting seat (2) is released by rotating the trigger (3).

10. A folding device according to claim 9, characterized in that: A limiting component is arranged between the positioning lock block (9) and the upper mounting seat (1), and / or a limiting component is arranged between the positioning lock block (9) and the lower mounting seat (2), the limiting component comprising a slider (91) and a slide groove (13), one of the slider (91) and the slide groove (13) being arranged on the positioning lock block (9), and the other being arranged on the upper mounting seat (1) and / or the lower mounting seat (2).

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