Novel locking device for folding bicycle frame

Abstract

The novel locking device comprises a frame folding box front cover, a frame folding box rear cover and a quick release handle, a concave portion is arranged at the bottom of the frame folding box front cover, a protruding portion is arranged at the bottom of the frame folding box rear cover, and positioning holes are formed in the side face of the concave portion and the side face of the protruding portion respectively. A concave part at the bottom of the folding box front cover and a convex part at the bottom of the frame folding box rear cover are mutually clamped, the quick release handle is in a bicycle handle shape, a plurality of threaded holes are formed in one end of the quick release handle, a cavity is formed in the quick release handle, a locking assembly is arranged in the cavity, the locking assembly comprises a spring, a push button switch and a screw, and the spring is connected with the push button switch. The spring is arranged in the push button switch, the push button switch is fixed to the position of the cavity of the quick release handle through the screw, according to the scheme, unlocking of the folding bicycle is more convenient, user operation is simplified, user experience is improved, and the safety coefficient of a user in the process of folding the bicycle is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of folding bicycle frames, and in particular relates to a novel locking device for a folding bicycle frame. Background Art

[0002] Folding bicycles, also known as folding bicycles, are a type of bicycle. Generally, folding bicycles are composed of frame folding joints and seat tube folding joints. By folding the frame and folding the front and rear wheels together, the length can be reduced by about 45%. After folding, the whole bicycle can be put into a folding bag or the trunk of a car. During the folding process, no external tools are required, and the bicycle can be folded and unfolded manually. After folding, the seat pole is used as a support point to ensure that it can stand steadily after folding. Folding bicycles are easy to carry and comfortable to use.

[0003] The locking devices of electric folding bicycle frames currently produced by some domestic factories are not particularly mature in design, and there is a risk that the connecting parts of the front and rear sections of the frame may be automatically opened while the user is riding.

[0004] Therefore, the utility model provides a novel locking device for a folding bicycle frame, which is used to solve the problems existing in the above-mentioned background technology, and can simplify user operation and improve user experience. Utility Model Content

[0005] In view of the problems raised by the above background technology, the purpose of the present utility model is to provide a new locking device for a folding bicycle frame that can simplify user operation and improve user experience.

[0006] In order to achieve the above technical purpose, the technical solution adopted by the utility model is as follows:

[0007] A new locking device for a folding bicycle frame comprises a front cover of a folding box of the frame, a rear cover of the folding box of the frame and a quick-release handle, wherein a recess is provided at the bottom of the front cover of the folding box of the frame, a protrusion is provided at the bottom of the rear cover of the folding box of the frame, positioning holes are respectively provided on the side surfaces of the recess and the side surfaces of the protrusion, the recess at the bottom of the front cover of the folding box and the protrusion at the bottom of the rear cover of the folding box of the frame are engaged with each other, the quick-release handle is in the shape of a bicycle handle, a plurality of threaded holes are provided at one end of the quick-release handle, a cavity is provided on the quick-release handle, a locking assembly is provided in the cavity, the locking assembly comprises a spring, a push button switch and a screw, the spring is arranged inside the push button switch, and the push button switch is fixed to the cavity of the quick-release handle by the screw.

[0008] It is further defined that it also includes a rotating shaft, which is inserted into the positioning holes on the side of the concave part and the side of the protruding part, and connects the protruding part and the concave part through the positioning holes. Such a structural design allows the front cover of the frame folding box and the rear cover of the frame folding box to open at a certain angle with the rotating shaft as the axis, which is convenient for users to disassemble or install the device.

[0009] It is further defined that the tightness of the rotating shaft is adjusted by a machine screw.

[0010] It is further defined that it also includes a second rotating shaft, which is rotatably connected to the quick-release handle through a threaded hole, and a mounting hole is provided on the top of the rear cover of the frame folding box. The second rotating shaft is inserted into the mounting hole and is rotatably connected to the rear cover of the frame folding box.

[0011] It is further defined that the number of threaded holes at one end of the quick-release handle is two.

[0012] It is further defined that it also includes a wrench, one end of which is provided with a locking tongue structure, and the wrench is used to compress the spring (so that the locking tongue structure is stuck into the frame of the folding bicycle).

[0013] It is further defined that the locking tongue structure is in the shape of a two-tooth fork.

[0014] It is further defined that it also includes a flat head screw, a nut and a nut cover, a locking screw hole is also provided on the top of the mounting hole, the flat head screw passes through the locking screw hole, the end of the flat head screw connects the nut and the nut cover, a flat head screw hanging hole is welded on the bottom of the flat head screw, and the inside of the flat head screw hanging hole is lubricated with grease.

[0015] Beneficial effects of the utility model:

[0016] 1. The front cover and the rear cover of the frame folding box of the utility model are respectively provided with a protrusion and a recess. Such a design can tightly fit the connection position after locking the frame to ensure that it has no shaking; in addition, the user sets a wrench and a locking assembly, and when the folding bicycle frame is fixed, the user compresses the spring of the locking assembly through the wrench, so that the locking tongue interface at the end of the wrench is inserted into the inner side of the boss of the folding bicycle frame to complete the locking; when the user needs to open the device, he only needs to gently press the push button switch to open it.

[0017] 2. Compared with the prior art, the present invention is more convenient to unlock, simplifies user operation, improves user experience, and greatly improves the safety factor of users when using folding bicycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0019] Figure 1 It is a top view and a side view of an embodiment of a new locking device for a folding bicycle frame of the utility model;

[0020] Figure 2 This is a structural schematic diagram of an embodiment of a new locking device for a folding bicycle frame of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a quick release handle 3 of an embodiment of a novel locking device for a folding bicycle frame of the utility model;

[0022] Figure 4 This is a structural schematic diagram of a flat head screw 6 of an embodiment of a new locking device for a folding bicycle frame of the utility model;

[0023] The symbols of the main components are described as follows: front cover of the frame folding box 1, rear cover of the frame folding box 2, quick release handle 3, wrench 4, flat head screw 6, rotating shaft 8, machine screw 9, screw 12, nut 13, spring 14, push button switch 16, nut cover 17. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] like Figure 1 As shown, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model. It should be understood that the specific embodiments described here are only used to explain the present utility model and are not used to limit the present utility model.

[0028] The utility model discloses a novel locking device for a folding bicycle frame, comprising a front cover 1 of a folding box of the frame, a rear cover 2 of the folding box of the frame and a quick-release handle 3. The bottom of the front cover 1 of the folding box of the frame is provided with a recess, the bottom of the rear cover 2 of the folding box of the frame is provided with a protrusion, the side surfaces of the recess and the side surfaces of the protrusion are respectively provided with positioning holes, the recess at the bottom of the front cover 1 of the folding box and the protrusion at the bottom of the rear cover 2 of the folding box of the frame are engaged with each other, the quick-release handle 3 is in the shape of a bicycle handle, a plurality of threaded holes are provided at one end of the quick-release handle 3, a cavity is provided on the quick-release handle 3, a locking assembly is provided in the cavity, the locking assembly comprises a spring 14, a push button switch 16 and a screw 12, the spring 14 is arranged inside the push button switch 16, and the push button switch 16 is fixed to the cavity of the quick-release handle 3 by the screw 12.

[0029] Preferably, it further comprises a rotating shaft 8, which is inserted into the positioning holes on the side of the concave part and the side of the protruding part, and connects the protruding part and the concave part through the positioning holes. Such a structural design enables the front cover 1 of the frame folding box and the rear cover 2 of the frame folding box to be opened at a certain angle with the rotating shaft 8 as the axis, so that the user can disassemble or install the device easily.

[0030] Preferably, the tightness of the rotating shaft 8 is adjusted by a machine screw 9.

[0031] Preferably, it also includes a second rotating shaft, which is rotatably connected to the quick-release handle 3 through a threaded hole. A mounting hole is provided on the top of the frame folding box rear cover 2. The second rotating shaft is inserted into the mounting hole and is rotatably connected to the frame folding box rear cover 2.

[0032] Preferably, the number of threaded holes at one end of the quick-release handle 3 is two.

[0033] Preferably, a wrench 4 is further included, one end of which is provided with a locking tongue structure, and the wrench 4 is used to compress the spring 14 so that the locking tongue structure is stuck into the frame of the folding bicycle.

[0034] Preferably, the locking tongue structure is in the shape of a two-tooth fork.

[0035] Preferably, it also includes a flat head screw 6, a nut 13 and a nut cover 17. A locking screw hole is also provided on the top of the mounting hole. The flat head screw 6 passes through the locking screw hole. The end of the flat head screw 6 connects the nut 13 and the nut cover 17. A flat head screw buckle hole is welded at the bottom of the flat head screw 6. The inside of the flat head screw buckle hole is lubricated with grease.

[0036] Specifically, the locking threaded hole is fixed by an M3 screw, and the M3 screw cannot press against the flat head screw 6 of the mounting hole or the hanging flat head screw 6 can move, but cannot be disengaged from the M3 screw.

[0037] The working principle of the utility model is as follows: the front cover 1 and the rear cover 2 of the frame folding box of the utility model are respectively provided with a protrusion and a recess at the bottom. After the user passes the rotating shaft 8 through the positioning holes on the sides of the protrusion and the recess, the rotating shaft 8 is locked by screws, so that the front cover 1 and the rear cover 2 of the frame folding box can be folded forward and backward with the rotating shaft 8 as the axis. Then, the user folds the front cover 1 and the rear cover 2 of the frame folding box to form a space bottom against the bottom of the frame of the folding bicycle, and then installs the quick release handle 3 to the top of the rear cover 2 of the frame folding box;

[0038] Such a design can tightly fit the connection position after locking the frame to ensure that it does not have any shaking; in addition, the user sets the wrench 4 and the locking assembly, and when the folding bicycle frame is fixed, the user compresses the spring 14 of the locking assembly through the wrench 4, so that the locking tongue interface at the end of the wrench 4 is inserted into the inner side of the boss of the folding bicycle frame to complete the locking; when the user needs to open the device, he only needs to gently press the push button switch 16 to open it.

[0039] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A novel locking device for a folding bicycle frame, characterized in that: The invention comprises a front cover (1) of a frame folding box, a rear cover (2) of a frame folding box and a quick release handle (3). The bottom of the front cover (1) of the frame folding box is provided with a recessed portion, the bottom of the rear cover (2) of the frame folding box is provided with a protruding portion, the side surfaces of the recessed portion and the side surfaces of the protruding portion are respectively provided with positioning holes, the recessed portion at the bottom of the front cover (1) of the folding box and the protruding portion at the bottom of the rear cover (2) of the frame folding box are mutually engaged, the quick release handle (3) is in the shape of a bicycle handle, one end of the quick release handle (3) is provided with a plurality of threaded holes, a cavity is provided on the quick release handle (3), a locking assembly is provided in the cavity, the locking assembly comprises a spring (14), a push button switch (16) and a screw (12), the spring (14) is arranged inside the push button switch (16), and the push button switch (16) is fixed to the cavity of the quick release handle (3) by the screw (12).

2. A novel locking device for a folding bicycle frame according to claim 1, characterized in that: It also comprises a rotating shaft (8), which is inserted into the positioning holes on the side of the recess and the side of the protrusion, and connects the protrusion and the recess through the positioning holes.

3. A novel locking device for a folding bicycle frame according to claim 2, characterized in that: The tightness of the rotating shaft (8) is adjusted by a machine screw (9).

4. A novel locking device for a folding bicycle frame according to claim 2, characterized in that: It also comprises a second rotating shaft, which is rotatably connected to the quick-release handle (3) via a threaded hole, a mounting hole is provided on the top of the frame folding box rear cover (2), the second rotating shaft is inserted into the mounting hole, and is rotatably connected to the frame folding box rear cover (2).

5. A novel locking device for a folding bicycle frame according to claim 1, characterized in that: The number of threaded holes at one end of the quick-release handle (3) is two.

6. A novel locking device for a folding bicycle frame according to claim 1, characterized in that: It also comprises a wrench (4), one end of which is provided with a locking tongue structure, and the wrench (4) is used to compress the spring (14) so ​​that the locking tongue structure is locked into the frame of the folding bicycle.

7. A novel locking device for a folding bicycle frame according to claim 6, characterized in that: The locking tongue structure is in the shape of a two-tooth fork.

8. A novel locking device for a folding bicycle frame according to claim 4, characterized in that: It also includes a flat head screw (6), a nut (13) and a nut cover (17); a locking screw hole is also provided at the top of the mounting hole; the flat head screw (6) passes through the locking screw hole; the end of the flat head screw (6) connects the nut (13) and the nut cover (17); a flat head screw buckle hole is welded at the bottom of the flat head screw (6); the inside of the flat head screw buckle hole is lubricated with grease.

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