Single-arm detachable bicycle

Abstract

The present invention discloses a single-arm detachable bicycle, comprising a front frame, a rear single arm, a middle tube and a connecting device, wherein the front frame and the rear single arm are connected by the connecting device; wherein the connecting device comprises a clamping block and a locking piece, wherein the clamping block is L-shaped, and a semicircular tube is recessed on the inner side edge thereof, and two clamping blocks are spliced ​​to form a mounting tube for mounting the middle tube, and the clamping block is fixed by the locking piece. The present invention adopts an L-shaped clamping block and forms a whole by screws, which makes it convenient to disassemble the bicycle while ensuring reliability during use; and a C-shaped washer is added to ensure the locking strength of the middle tube; and it can ensure that the contact surfaces between the two clamping blocks are tightly fitted, further improving the stability of the bicycle. And an expansion block is arranged in the mounting tube to ensure that the C-shaped washer can be separated from the middle tube when decompressed.

Description

Technical Field

[0001] The invention relates to the field of bicycles, in particular to a single-arm detachable bicycle. Background Art

[0002] In today's society where science and technology are constantly developing, bicycles still occupy an important position among means of transportation. This healthy sports and leisure method that is closest to nature is very popular among young people. There are a wide variety of bicycles on the market. However, there are still problems of varying sizes with the bicycles sold on the market, which trouble the lives of bicycle users and affect market demand.

[0003] For example, bicycles are relatively large in size and there are some problems with their placement. In today's cities where every inch of land is valuable, bicycles that cannot be quickly disassembled and do not require as much storage space have indeed become a "burden." Summary of the invention

[0004] In view of the defects of the above prior art, the main purpose of the present invention is to overcome the shortcomings of the prior art, and discloses a single-arm detachable bicycle, comprising a front frame, a rear single arm, a middle tube and a connecting device, wherein the front frame and the rear single arm are connected by the connecting device; wherein,

[0005] The connecting device includes a clamping block and a locking piece. The clamping block is L-shaped and has a semicircular tube recessed on its inner side. Two clamping blocks are spliced ​​to form a mounting tube for mounting the middle tube. The clamping block is fixed by the locking piece.

[0006] Furthermore, it also includes a C-shaped gasket, the outer wall of the C-shaped gasket is a conical structure, the inner wall of the mounting tube is a conical structure, the C-shaped gasket is arranged in the mounting tube, and the middle tube is inserted into the C-shaped gasket.

[0007] Furthermore, the taper of the C-shaped gasket is the same as the taper of the mounting tube.

[0008] Furthermore, the outer wall of the middle tube and the inner wall of the C-shaped gasket are respectively provided with transverse stripes.

[0009] Furthermore, an expansion block for enlarging the C-shaped gasket is provided on the upper portion of the inner wall of the mounting seat.

[0010] Furthermore, the expansion block includes a guide portion and an expansion portion, the expansion portion is a triangular structure, and the guide portion is a rectangular structure.

[0011] Furthermore, the locking members are screws, and at least two are arranged on each clamping block.

[0012] Beneficial effects achieved by the present invention:

[0013] The present invention adopts an L-shaped clamp block and forms an integral body through screws, which makes it easy to disassemble the bicycle and ensures reliability during use; and adds a C-shaped washer to ensure the locking strength of the middle tube; and can ensure that the contact surfaces between the two clamp blocks are closely fitted, further improving the stability of the bicycle. And an expansion block is arranged in the mounting tube to ensure that the C-shaped washer can be separated from the middle tube when decompressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the bicycle structure;

[0015] Figure 2 for Figure 1 A top view of

[0016] Figure 3 It is a schematic diagram of the structure of the clamping block;

[0017] Figure 4 is a top view of the connecting device;

[0018] Figure 5 for Figure 4 Main view

[0019] Figure 6 It is a schematic diagram of the structure of a C-shaped gasket;

[0020] Figure 7 Another structure of the clamping block;

[0021] Figure 8 This is a schematic diagram of the structure when the C-shaped gasket is used;

[0022] The reference numerals are as follows:

[0023] 1. front bracket, 2. rear single arm, 3. connecting device, 4. rear wheel, 6. front fork, 7. front wheel, 8. middle tube, 31. clamping block, 32. locking block, 33. mounting tube, 34. C-shaped washer, 35. expansion piece, 91. first clamping block, 92. second clamping block, 311. semicircular tube, 351. guide part, 352. expansion part. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] A single-arm detachable bicycle of the present invention, as Figure 1-5As shown, it includes a front bracket 1, a rear single arm 2, a connecting device 3, a rear wheel 4, a front fork 6, a front wheel 7 and a middle tube 8. The front wheel 7 is mounted on the front bracket 1 through the front fork 6, and the rear wheel 4 is mounted on the rear single arm 2. The front bracket 1 and the rear single arm 2 are fixedly connected by the connecting device 3. The connecting device 3 includes two clamping blocks 31 and a locking member 32. The clamping block 31 is L-shaped, and a semicircular tube 311 is recessed on the inner side edge thereof. The two clamping blocks 31 are spliced ​​to form a mounting tube 33 for mounting the middle tube 8. The clamping blocks 31 are fixed by the locking member 32. Specifically, the two clamping blocks 31 are respectively a first clamping block 91 and a second clamping block 92, the upper side of the first clamping block 91 is fitted with the inner bottom side of the second clamping block 92, the inner bottom side of the first clamping block 91 is fitted with the upper side of the second clamping block 92, the inner side of the first clamping block 91 is fitted with the inner side of the second clamping block 92, and the two semicircular tubes 311 are symmetrically installed to form the mounting tube 33, and the middle tube 8 is installed in the mounting tube 3. The two L-shaped clamping blocks 31 form a whole, and the bottom side and the upper side form a mutual force, which further improves the stability of the connecting device 3.

[0026] In the above embodiment, the locking member 32 is a screw, and at least two are provided on each clamping block 31. The advantage is that screws are common parts with low cost. Two screw holes are provided on each clamping member 31, which is equivalent to fixing one connecting device 3 with four screws, further improving the firmness and reliability of the connecting device 3.

[0027] In the above embodiment, the middle tube 8 is installed in the mounting tube 33, and the middle tube is fixed by clamping, which greatly reduces the reliability. At the same time, there will be a gap between the two clamping blocks 31, which reduces the stability of the installation of the front bracket 1 and the rear single arm 2. Therefore, while ensuring the overall stability of the bicycle, the installation and fixation of the middle tube 8 are ensured. In one embodiment, Figure 6-8 As shown, it also includes a C-shaped gasket 34, the outer wall of the C-shaped gasket 34 is a conical structure, the inner wall of the mounting tube 33 is a conical structure, the C-shaped gasket is arranged in the mounting tube, and the middle tube 8 is inserted into the C-shaped gasket 34. The above structure abandons the traditional locking principle and locks the middle tube 8 through the mutual cooperation of the cones. Specifically, the middle tube 8 is inserted into the C-shaped gasket 34. Due to the friction between the middle tube 8 and the C-shaped gasket 34, the C-shaped gasket 34 is driven to fit closely with the conical mounting tube 33, so that the C-shaped gasket 34 is tightened, so that the friction between it and the middle tube 8 is greater, thereby achieving conical locking.

[0028] In one embodiment, the taper of the C-shaped washer 34 is the same as the taper of the mounting tube 33 .

[0029] In one embodiment, the inner wall of the middle tube 8 and the outer wall of the C-shaped gasket 34 are respectively provided with transverse lines 35. The friction between the middle tube 8 and the C-shaped gasket 34 is increased by the transverse lines.

[0030] When the C-shaped gasket 34 is used for a long time, it may be deformed and unable to return to its original state, making it difficult to separate from the middle tube 8. An expansion block 35 is also provided in the mounting tube 33, wherein the expansion block 35 only needs to be installed on one of the clamping blocks 31. Specifically, the expansion block 35 includes a guide portion 351 and an expansion portion 352. The expansion portion 351 is triangular in shape, and its width is greater than the gap width when the C-shaped gasket 34 is locked, and smaller than the gap width when it is relaxed; the guide portion 351 is a rectangular structure. When locked, the guide portion 351 is in the middle of the gap of the C-shaped gasket 34; when decompressed, the middle tube 8 is lifted, and the C-shaped gasket 34 is guided by the two sides of the expansion portion 352 to expand outward until the C-shaped gasket 34 is expanded enough to be separated from the middle tube 8.

[0031] When the present invention is used, Figure 1-8 As shown, the front bracket 1 and the clamping block 31 of the rear single arm 2 are matched and installed, so that the semicircular tube 311 is combined to form a mounting tube 33 for mounting the middle tube 8, a C-shaped washer 34 is arranged in the mounting tube 33, and the middle tube 8 is inserted into the C-shaped washer 34. By pressing down the middle tube 8, the middle tube 8 can be locked. When adjusting the height of the middle tube 8, the middle tube 8 is lifted up, and after adjusting the height, it is pressed down again to lock. When the bicycle needs to be dismantled and stored, it is only necessary to loosen the locking piece 32 and separate the two clamping blocks 31.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. If the present invention is modified or replaced by equivalents without departing from the spirit and scope of the present invention, they should all be included in the protection scope of the claims of the present invention.

Claims

1. A single-arm detachable bicycle, characterized in that: It includes a front bracket, a rear single arm, a middle tube and a connecting device, wherein the front bracket and the rear single arm are connected by the connecting device; wherein, The connecting device comprises a clamping block and a locking piece, the clamping block is L-shaped, a semicircular tube is recessed on the inner side edge thereof, two clamping blocks are spliced ​​to form a mounting tube for mounting the middle tube, and the clamping block is fixed by the locking piece; The clamping blocks of the front bracket and the rear single arm are installed in coordination so that the semicircular tubes are combined to form the mounting tube for mounting the middle tube; the inner wall of the mounting tube is a conical structure, and at least two locking members are arranged on each clamping block.

2. A single-arm detachable bicycle according to claim 1, characterized in that: It also includes a C-shaped gasket, the outer wall of which is a conical structure, the C-shaped gasket is arranged in the mounting tube, and the middle tube is inserted into the C-shaped gasket.

3. A single-arm detachable bicycle according to claim 2, characterized in that: The taper of the C-shaped gasket is the same as the taper of the mounting tube.

4. A single-arm detachable bicycle according to claim 2, characterized in that: The outer wall of the middle tube and the inner wall of the C-shaped gasket are respectively provided with transverse stripes.

5. The single-arm detachable bicycle according to claim 2, characterized in that: An expansion block for enlarging the C-shaped gasket is arranged on the upper part of the inner wall of the mounting tube.

6. A single-arm detachable bicycle according to claim 5, characterized in that: The expansion block comprises a guide portion and an expansion portion, the expansion portion is a triangular structure, and the guide portion is a rectangular structure.

7. The single-arm detachable bicycle according to claim 1, characterized in that: The locking members are screws, and at least two are arranged on each clamping block.

Images