Sleeve type bicycle frame

Abstract

The utility model provides a sleeve type bicycle frame, and relates to the technical field of bicycle frames, the sleeve type bicycle frame comprises a rear frame and a front frame, the rear frame and the front frame are connected through a folding structure, the folding structure comprises a clamping plate, one side of the clamping plate is rotatably connected with a buckle, one side of a clamping shell is provided with a clamping groove, and the clamping groove is connected with the buckle. The folding structure is arranged, the rear frame and the front frame are hinged through the clamping plate and the clamping shell, the rear frame and the front frame can be folded in a rotating mode through hinge joint of the clamping plate and the clamping shell, and the folding structure is simple and convenient to use. The clamping plate and the clamping shell can be locked by pushing the buckle to rotate to clamp the two clamping blocks into the two through holes in the clamping shell, the position of the buckle can be further locked or locking of the buckle can be released by controlling the groove block to move, and therefore the rear frame or the front frame can be pushed to rotate and be folded, the overall size of the frame is reduced, and carrying is convenient.

Description

Technical Field

[0001] This utility model relates to the field of bicycle frame technology, and in particular to a sleeve-type bicycle frame. Background Technology

[0002] The bicycle frame is the core component of a bicycle, used to support and install all the parts required for the bicycle. The sleeve bicycle frame is a new type of frame that uses a sleeve connection structure. Compared with the traditional welded aluminum alloy bicycle frame, the sleeve connection overcomes the problems of poor weldability and poor weldability of aluminum alloy materials. With technical and process treatment, it can achieve the strength of steel.

[0003] A bicycle frame typically consists of a rear frame that supports the rear wheel and a front frame that supports the front wheel and handlebars. The front and rear frames are usually welded together, which results in a relatively long overall length of the bicycle frame. This makes it inconvenient for users to carry the bicycle in places such as the trunk during daily use, leading to certain inconveniences when using a telescopic bicycle. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that the front and rear frames are usually welded together, which results in a long overall length of the bicycle frame. This makes it inconvenient for users to put the bicycle in places such as the trunk during daily use, and causes certain inconvenience when using a telescopic bicycle frame. Therefore, a telescopic bicycle frame is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sleeve-type bicycle frame, including a rear frame and a front frame, wherein the rear frame and the front frame are used to connect to bicycle components such as the rear wheel, the front wheel, and the handlebars, and the rear frame and the front frame are connected by a folding structure.

[0006] The effects achieved by the above components are as follows: when assembling a bicycle, the rear frame and the front frame are spliced ​​together through a folding structure (the installation of the rear wheel assembly on the rear frame and the front wheel assembly and handlebars on the front frame are existing technologies and will not be described in detail). When carrying the bicycle, the front frame and the rear frame are folded together through the folding mechanism to reduce the area and facilitate carrying.

[0007] Preferably, the folding structure includes: a clamping plate, which is bolted to one end of the rear frame, and a buckle is rotatably connected to one side of the clamping plate;

[0008] The clamping housing is bolted to one end of the front frame. A slot is provided on one side of the clamping housing. Through holes are provided on the upper and lower sides of the inner wall of the slot to engage with the clamping block and lock the buckle. The clamping plate and the clamping housing are connected by a hinge.

[0009] The effect achieved by the above components is that the plate and the housing are hinged together, allowing the rear frame and the front frame to be folded or unfolded by rotating between the plate and the housing.

[0010] Preferably, the folding mechanism further includes a protrusion, one side of which is fixedly connected to one side of the buckle, and L-shaped blocks are slidably connected to the upper and lower ends of the inner wall of the protrusion, and one end of each of the two L-shaped blocks is fixedly connected to a locking block, which slides on the inner wall of the protrusion, and a spring is provided at the end of the L-shaped block away from the locking block.

[0011] The aforementioned components achieve the following effects: Rotating the rear frame towards the front frame allows the latch plate to enter the housing, completing the splicing of the rear and front frames. Pushing the latch on one side of the latch plate towards the housing causes it to rotate, making the latch and latch plate perpendicular. Two latching blocks on the outer surface of the protrusion on one side of the latch contact the inner wall of the slot, retracting into the protrusion and causing two L-shaped blocks to move in the same direction, compressing the springs. After the protrusion enters the slot, the two compressed springs return to their original state, pushing the latching blocks outwards and inserting them into the through holes on the upper and lower sides of the slot, fixing the protrusion inside the slot and the latch on one side of the housing, thus combining the latch plate and housing. When the frame needs to be folded, pressing the two L-shaped blocks on one side of the latch controls the latching blocks to move and retract into the protrusion. Then rotating the latch releases it from the slot, pushing the rear frame through the latch plate to rotate on the side of the housing connected to the front frame, folding the rear and front frames to reduce the overall size of the frame for easier carrying.

[0012] Preferably, a round rod is fixedly connected to one side of the protrusion, and one end of the inner wall of the two L-shaped blocks slides on the outer surface of the round rod.

[0013] The effect achieved by the above components is that the L-shaped block slides on the outer surface of the two round rods when it moves. The round rods can restrict the position and angle of the L-shaped block away from the locking block, so as to avoid the L-shaped block from tilting as much as possible.

[0014] Preferably, a washer is provided at the end of the spring away from the L-shaped block, and the washer slides on the outer surface of the round rod.

[0015] The effect achieved by the above components is that the washer ring is used to contact the surface of the protrusion and restrict the position of the spring away from the end of the L-shaped block.

[0016] Preferably, the top edge of the card block is a bevel.

[0017] The effect achieved by the above components is that by setting the top edge of the card block to be a slope, when the protrusion enters the card slot, one end of the card block contacts the inner wall of the card slot more easily and slides into the protrusion.

[0018] Preferably, an auxiliary structure is provided on one side of the buckle, the auxiliary structure including:

[0019] A groove block, wherein two rectangular rods are fixedly connected to one side of the groove block, and a top block is fixedly connected to one side of each rectangular rod, wherein the rectangular rods slide on the inner wall of the buckle;

[0020] A screw, one end of which is rotatably connected to one side of the buckle, and the outer surface of the screw is threadedly connected to the inner wall of the slot block;

[0021] A positioning rod, one end of which is fixedly connected to one side of the buckle, and the slot block slides on the outer surface of the positioning rod. When the screw is rotated to control the movement of the slot block, the position of the slot block is restricted by the positioning rod.

[0022] The effect achieved by the above components is as follows: after the protrusion on one side of the buckle is inserted into the slot, the screw can be rotated to control the slot block to move away from the buckle on the outer surface of the screw, so that the top block on one side of the two rectangular rods is located below the L-shaped block, thus restricting the position of the L-shaped block and preventing the frame from shaking as much as possible, which could cause the L-shaped block to move accidentally and cause the buckle to disengage from the through hole in the slot.

[0023] Preferably, a conical block is fixedly connected to one side of the rectangular rod, and the edge of the conical block near the top block is a slope.

[0024] The effect achieved by the above components is as follows: when it is necessary to release the locking position of the latch by the locking block, the screw can be rotated to further control the slot block to move outward, so that the inclined side of the conical block moves towards the L-shaped block to squeeze the L-shaped block, control the L-shaped block to compress the spring and drive the locking block to move out of the slot and into the protrusion, and then the latch can be pried outward to rotate.

[0025] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0026] In this utility model, by setting a folding structure, the rear frame and the front frame can be rotated and folded by hinged plate and housing. Pushing the buckle to rotate will lock the two blocks into the two through holes inside the housing. Controlling the movement of the slot block can further lock or unlock the buckle, thereby pushing the rear frame or the front frame to rotate and fold, reducing the overall size of the frame for easy carrying. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the rear frame of this utility model;

[0029] Figure 3This is a three-dimensional structural diagram of the card plate of this utility model;

[0030] Figure 4 This is a three-dimensional structural diagram of the buckle of this utility model;

[0031] Figure 5 This is a three-dimensional structural diagram of the screw section of this utility model;

[0032] Figure 6 This is a three-dimensional structural diagram of the groove block of this utility model.

[0033] Legend: 1. Rear frame; 2. Folding structure; 3. Auxiliary structure; 4. Front frame; 21. Clamping plate; 22. Clamping case; 23. Buckle; 24. Clamping slot; 25. Protrusion; 26. Clamping block; 27. L-shaped block; 28. Spring; 29. ​​Washer ring; 210. Round rod; 31. Groove block; 32. Rectangular rod; 33. Top block; 34. Conical block; 35. Screw; 36. Positioning rod. Detailed Implementation

[0034] Example 1, such as Figure 1-3 As shown, a sleeve-type bicycle frame includes a rear frame 1 and a front frame 4. The rear frame 1 and the front frame 4 are used to connect to bicycle components such as the rear wheel, front wheel, and handlebars. The rear frame 1 and the front frame 4 are connected by a folding structure 2. When assembling the bicycle, the rear frame 1 and the front frame 4 are spliced ​​together by the folding structure 2. (The installation of the rear wheel component on the rear frame 1 and the front wheel component and handlebars on the front frame 4 are existing technologies and will not be described in detail.) When carrying the bicycle, the front frame 4 and the rear frame 1 are folded together by the folding mechanism to reduce the area for easy carrying.

[0035] Reference Figure 2-5 As shown in this embodiment: the folding structure 2 includes a locking plate 21 and a locking shell 22. The locking plate 21 is connected to one end of the rear frame 1 by bolts. A buckle 23 is rotatably connected to one side of the locking plate 21. The locking shell 22 is connected to one end of the front frame 4 by bolts. A slot 24 is provided on one side of the locking shell 22. Through holes are provided on the upper and lower sides of the inner wall of the slot 24 to engage with the locking block 26 and lock the buckle 23. The locking plate 21 and the locking shell 22 are connected by a hinge. The hinge between the locking plate 21 and the locking shell 22 allows the rear frame 1 and the front frame 4 to be folded or unfolded by rotating between the locking plate 21 and the locking shell 22.

[0036] Reference Figure 2-5As shown, in this embodiment: the folding mechanism further includes a protrusion 25, one side of which is fixedly connected to one side of the buckle 23. L-shaped blocks 27 are slidably connected to the upper and lower ends of the inner wall of the protrusion 25, respectively. A locking block 26 is fixedly connected to one end of each of the two L-shaped blocks 27. The locking block 26 slides on the inner wall of the protrusion 25. A spring 28 is provided at the end of the L-shaped block 27 away from the locking block 26. Rotating the rear frame 1 towards the front frame 4 causes the locking plate 21 to enter the interior of the locking housing 22, completing the splicing of the rear frame 1 and the front frame 4. This pushes the buckle 23 to rotate towards the locking housing 22 on one side of the locking plate 21, making the buckle 23 perpendicular to the locking plate 21. The two locking blocks 26 on the outer surface of the protrusion 25 on one side of the buckle 23 contact the inner wall of the slot 24 and retract into the protrusion 25. The internal mechanism drives two L-shaped blocks 27 to move in the same direction and compress the spring 28. After the protrusion 25 enters the slot 24, the two compressed springs 28 return to their original state and push the block 26 outward to insert the block 26 into the through holes on the upper and lower sides of the slot 24, fixing the protrusion 25 inside the slot 24 and the buckle 23 to one side of the case 22, so that the plate 21 and the case 22 are combined. When the frame needs to be folded, press the two L-shaped blocks 27 on one side of the buckle 23 to control the block 26 to move and retract into the protrusion 25, and then rotate the buckle 23 to disengage from the slot 24, pushing the rear frame 1 to rotate on the side of the case 22 connected to the front frame 4 through the plate 21, so that the rear frame 1 and the front frame 4 are folded to reduce the overall size of the frame for easy carrying.

[0037] Reference Figure 2 , Figure 4 and Figure 5 as well as Figure 6 As shown in this embodiment: a round rod 210 is fixedly connected to one side of the protrusion 25. One end of the inner wall of the two L-shaped blocks 27 slides on the outer surface of the round rod 210. When the L-shaped blocks 27 move, they will slide on the outer surface of the two round rods 210. The round rod 210 can restrict the position and angle of the L-shaped blocks 27 away from the locking block 26, so as to avoid the angle of the L-shaped blocks 27 from deflecting as much as possible. A washer 29 is provided at the end of the spring 28 away from the L-shaped blocks 27. The washer 29 slides on the outer surface of the round rod 210. The washer 29 is used to contact the surface of the protrusion 25 and restrict the position of the end of the spring 28 away from the L-shaped blocks 27. The top edge of the locking block 26 is a slope. By setting the top edge of the locking block 26 to be a slope, when the protrusion 25 enters the slot 24, the end of the locking block 26 contacts the inner wall of the slot 24 and slides into the protrusion 25 more easily.

[0038] Reference Figure 4-6As shown in this embodiment: an auxiliary structure 3 is provided on one side of the buckle 23. The auxiliary structure 3 includes a groove block 31 and a screw 35. Two rectangular rods 32 are fixedly connected to one side of the groove block 31. A top block 33 is fixedly connected to one side of the rectangular rods 32. The rectangular rods 32 slide on the inner wall of the buckle 23. One end of the screw 35 is rotatably connected to one side of the buckle 23. The outer surface of the screw 35 is threadedly connected to the inner wall of the groove block 31. A positioning rod 36 is fixedly connected to one side of the buckle 23. The groove block 31 slides on the outer surface of the positioning rod 36. After the protrusion 25 on one side of the buckle 23 is inserted into the groove 24, the screw 35 can be rotated to control the groove block 31 to move away from the buckle 23 on the outer surface of the screw 35, so that the two rectangular rods... The top block 33 on one side of the rectangular rod 32 is located below the L-shaped block 27, which restricts the position of the L-shaped block 27 and prevents the frame from shaking as much as possible, causing the L-shaped block 27 to move accidentally and causing the locking block 26 to disengage from the through hole in the slot 24. A tapered block 34 is fixedly connected to one side of the rectangular rod 32. The edge of the tapered block 34 near the top block 33 is inclined. When it is necessary to release the locking block 26 from the position of the buckle 23, the screw 35 can be rotated to further control the slot block 31 to move outward, so that the inclined side of the tapered block 34 moves towards the L-shaped block 27 to squeeze the L-shaped block 27, control the L-shaped block 27 to compress the spring 28 and drive the locking block 26 to move out of the slot 24 and into the protrusion 25. Then the buckle 23 can be pried outward to rotate.

[0039] Working principle: When assembling the bicycle, rotating the rear frame 1 towards the front frame 4 causes the clamping plate 21 to enter the clamping housing 22, completing the splicing of the rear frame 1 and the front frame 4. Pushing the buckle 23 on one side of the clamping plate 21 towards the clamping housing 22 makes the buckle 23 perpendicular to the clamping plate 21. The two locking blocks 26 on the outer surface of the protrusion 25 on one side of the buckle 23 contact the inner wall of the slot 24, retracting into the protrusion 25 and causing the two L-shaped blocks 27 to move in the same direction, compressing the spring 28. After the protrusion 25 enters the slot 24, the two compressed springs 28 return to their original shape, pushing the locking blocks 26 outwards, inserting the locking blocks 26 into the through holes on the upper and lower sides of the slot 24, fixing the protrusion 25 inside the slot 24 and the buckle 23 on one side of the clamping housing 22, thus combining the clamping plate 21 and the clamping housing 22, splicing the front frame 4 and the rear frame 1. This completes the splicing of the rear wheel assembly on the rear frame 1 and the front wheel assembly and handlebars on the front frame 4. The installation of several bicycle components is based on existing technology and will not be described in detail here. Then, rotate the screw 35 to control the slot block 31 to move away from the buckle 23 on the outer surface of the screw 35, so that the top block 33 on one side of the two rectangular rods 32 is located below the L-shaped block 27, which restricts the position of the L-shaped block 27 and avoids the frame from shaking as much as possible, which would cause the L-shaped block 27 to move accidentally and cause the locking block 26 to disengage from the through hole in the slot 24. When carrying the bicycle, rotate the screw 35 to further control the slot block 31 to move outward, so that the inclined side of the conical block 34 moves towards the L-shaped block 27 to squeeze the L-shaped block 27, control the L-shaped block 27 to compress the spring 28 and drive the locking block 26 to move out of the slot 24 and into the protrusion 25. Then, the buckle 23 can be pried outward to rotate, pushing the rear frame 1 to rotate on the side of the locking case 22 connected to the front frame 4 through the locking plate 21, so that the rear frame 1 and the front frame 4 can be folded to reduce the overall size of the frame for easy carrying.

[0040] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A sleeve-type bicycle frame, comprising a rear frame (1) and a front frame (4), characterized in that: The rear frame (1) and the front frame (4) are used to connect to the rear wheel and front wheel of the bicycle and the handlebars. The rear frame (1) and the front frame (4) are connected by a folding structure (2). The folding structure (2) includes: a clamping plate (21), which is connected to one end of the rear frame (1) by bolts, and a buckle (23) is rotatably connected to one side of the clamping plate (21). The clamping shell (22) is bolted to one end of the front frame (4). A groove (24) is provided on one side of the clamping shell (22). Through holes are provided on the upper and lower sides of the inner wall of the groove (24) to engage with the clamping block (26) and lock the buckle (23). The clamping plate (21) is connected to the clamping shell (22) by a hinge. The folding structure (2) also includes a protrusion (25). One side of the protrusion (25) is fixedly connected to one side of the buckle (23). The inner walls of the protrusion (25) are slidably connected to the upper and lower ends of L-shaped blocks (27), and one end of each L-shaped block (27) is fixedly connected to a locking block (26). The locking block (26) slides on the inner wall of the protrusion (25), and a spring (28) is provided on the end of the L-shaped block (27) away from the locking block (26). A round rod (210) is fixedly connected to one side of the protrusion (25), and one end of the inner wall of each L-shaped block (27) slides on the outer surface of the round rod (210).

2. The sleeve-type bicycle frame according to claim 1, characterized in that: The spring (28) is provided with a washer (29) at the end away from the L-shaped block (27), and the washer (29) slides on the outer surface of the round rod (210).

3. A sleeve-type bicycle frame according to claim 2, characterized in that: The top edge of the card block (26) is sloped.

4. A sleeve-type bicycle frame according to claim 3, characterized in that: An auxiliary structure (3) is provided on one side of the buckle (23), the auxiliary structure (3) including: The groove block (31) has two rectangular rods (32) fixedly connected to one side, and a top block (33) is fixedly connected to one side of the rectangular rods (32), wherein the rectangular rods (32) slide on the inner wall of the buckle (23); Screw (35), one end of which is rotatably connected to one side of the buckle (23), and the outer surface of the screw (35) is threadedly connected to the inner wall of the slot block (31); The positioning rod (36) has one end fixedly connected to one side of the buckle (23). The slot block (31) slides on the outer surface of the positioning rod (36). When the screw (35) is rotated to control the movement of the slot block (31), the position of the slot block (31) is restricted by the positioning rod (36).

5. A sleeve-type bicycle frame according to claim 4, characterized in that: A conical block (34) is fixedly connected to one side of the rectangular rod (32), and the edge of the conical block (34) near the top block (33) is inclined.

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