Folding frame of bicycle

Abstract

The utility model relates to the technical field of bicycles, in particular to a folding bicycle frame which comprises a front bicycle frame, a rear bicycle frame and a connecting assembly. The connecting assembly comprises a first spring, a reinforcing rod, a shifting rod, a connecting seat, a locking seat and a driving component, the first spring is connected with the rear frame, the reinforcing rod is connected with the first spring, the shifting rod is fixedly connected with the reinforcing rod, the connecting seat is fixedly connected with the front frame, the locking seat is slidably connected with the rear frame, and the shifting rod is pushed to drive the reinforcing rod to be retracted into the rear frame. Then the front frame is rotated to drive the connecting base to move, the connecting base extends into the rear frame, at the moment, pushing of the shifting rod is stopped, the reinforcing rod is reset under the action of the first spring, and therefore the reinforcing rod extends into the cavity in the front frame, and connection of the front frame and the rear frame is reinforced through the reinforcing rod; the purposes that the stability degree of connection of the front frame and the rear frame is improved, and riding is prevented from being affected are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a foldable bicycle frame. Background Art

[0002] The frame of a foldable bicycle can be folded so that the front and rear wheels are folded together, thereby reducing the space occupied by the bicycle. The folding structure of a traditional bicycle frame is located outside the frame, resulting in a complex frame structure.

[0003] Prior art CN214165203U discloses a frame folding device and a bicycle, comprising a first frame, a second frame, a locking assembly and a locking fitting; the first frame is rotatably connected to the second frame, the locking assembly and the locking fitting cooperate with each other to achieve locking or opening; a cavity is provided at one end of the first frame close to the second frame, the locking assembly is arranged on the first frame, the locking assembly is located in the cavity, and the locking fitting is arranged on the second frame; when the first frame and the second frame rotate to be close to each other, the locking assembly and the locking fitting are locked together, thereby achieving locking between the first frame and the second frame, and at this time, the locking fitting is located in the cavity. The folding device of the utility model can be hidden, making the appearance of the frame more concise.

[0004] The above device arranges the locking assembly and the locking fitting inside the frame, making the frame more indirect, but the first frame and the second frame are connected only by plugging the first connecting member and the second body, resulting in a relatively fragile connection between the first frame and the second frame, which affects riding. Utility Model Content

[0005] The utility model aims to provide a foldable bicycle frame, which solves the problem that in an existing frame folding device and a bicycle, a first frame and a second frame are connected only by plugging a first connecting member and a second body, resulting in a relatively fragile connection between the first frame and the second frame, which affects riding.

[0006] To achieve the above-mentioned purpose, the utility model provides a foldable bicycle frame, comprising a front frame and a rear frame, wherein the front frame is rotatably connected to the rear frame and also comprises a connecting assembly; the connecting assembly comprises a first spring, a reinforcement rod, a shifting rod, a connecting seat, a locking seat and a driving component, the first spring is connected to the rear frame and is located inside the rear frame, the reinforcement rod is connected to the first spring and is slidably connected to the rear frame and is located at one end of the first spring, the shifting rod is fixedly connected to the reinforcement rod and is arranged on the reinforcement rod, the connecting seat is fixedly connected to the front frame and is arranged on the front frame, the locking seat is slidably connected to the rear frame and is located inside the rear frame, and the driving component is arranged on the rear frame and drives the locking seat to move.

[0007] Wherein, the locking seat comprises a seat body and a locking column, the seat body is slidably connected to the rear frame and is located inside the rear frame; the locking column is fixedly connected to the seat body and is arranged on the seat body.

[0008] Wherein, the driving component includes a sliding rod and a second spring, the sliding rod is slidably connected to the rear frame, and is fixedly connected to the seat body, and is located inside the rear frame; the two ends of the second spring are respectively connected to the sliding rod and the rear frame, and the second spring is sleeved on the sliding rod.

[0009] Wherein, the driving component further comprises a driving seat and a lifting seat, wherein the driving seat is fixedly connected to the shifting rod and is arranged on the shifting rod; the lifting seat is fixedly connected to the sliding rod and is located on a side of the sliding rod close to the driving seat.

[0010] Wherein, the connecting assembly also includes a mounting plate and a threaded rod, wherein the mounting plate is fixedly connected to the rear frame and arranged on the rear frame; the threaded rod is threadedly connected to the mounting plate and arranged on the mounting plate.

[0011] The utility model provides a foldable bicycle frame. When the frame needs to be folded, the lever is pushed to drive the reinforcement rod to move, so that the reinforcement rod is moved out of the cavity on the front frame and then completely stored in the rear frame. At this time, the locking seat is driven to move by the driving component to disengage the locking seat from the connecting seat. At this time, the front frame can be rotated, so that the front frame and the rear frame can be folded. When the bicycle needs to be used, the lever is pushed again to drive the reinforcement rod to be stored in the rear frame, and then the front frame is rotated to drive the connecting seat to move. The connecting seat is extended into the interior of the rear frame, and the push of the lever is stopped at this time, so that the reinforcing rod is reset under the action of the first spring, thereby allowing the reinforcing rod to extend into the cavity on the front frame, and finally the locking seat is driven to rise by the driving component to lock the connecting seat, thereby locking the front frame and the rear frame. At this time, the reinforcing rod extends into the interior of the front frame, and the connection between the front frame and the rear frame is reinforced by the reinforcing rod, thereby achieving the purpose of improving the stability of the connection between the front frame and the rear frame and avoiding affecting the riding. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0013] Figure 1 It is a schematic diagram of the overall structure of a foldable bicycle frame according to the first embodiment of the utility model.

[0014] Figure 2 It is a schematic diagram of the installation structure of the locking seat of the first embodiment of the utility model.

[0015] Figure 3 The first embodiment of the utility model Figure 2 Enlarged view of point A.

[0016] Figure 4 It is a structural schematic diagram of a connecting assembly of the first embodiment of the utility model.

[0017] Figure 5 It is a schematic diagram of the installation structure of the first spring of the first embodiment of the utility model.

[0018] Figure 6 It is a schematic diagram of the installation structure of the threaded rod of the second embodiment of the utility model.

[0019] In the figure: 101-front frame, 102-rear frame, 103-connecting assembly, 104-first spring, 105-reinforcement rod, 106-shift rod, 107-connecting seat, 108-locking seat, 109-driving member, 110-seat body, 111-locking column, 112-sliding rod, 113-second spring, 114-driving seat, 115-lifting seat, 201-mounting plate, 202-threaded rod. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0021] First embodiment:

[0022] See also Figures 1 to 5 ,in Figure 1 It is a schematic diagram of the overall structure of a folding bicycle frame. Figure 2 This is a schematic diagram of the installation structure of the locking seat. Figure 3 yes Figure 2 A magnified image of Figure 4 is a schematic diagram of the structure of the connected components. Figure 5 It is a schematic diagram of the installation structure of the first spring.

[0023] The utility model provides a foldable bicycle frame, including a front frame 101, a rear frame 102 and a connecting assembly 103, wherein the connecting assembly 103 includes a first spring 104, a reinforcing rod 105, a lever 106, a connecting seat 107, a locking seat 108 and a driving member 109, wherein the locking seat 108 includes a seat body 110 and a locking column 111, and the driving member 109 includes a sliding rod 112, a second spring 113, a driving seat 114 and a lifting seat 115. The first spring 104 drives the reinforcing rod 105 to move, so that the front frame 101 and the rear frame 102 are connected. Then, the reinforcing rod 105 can extend into the front frame 101, so as to reinforce the connection between the front frame 101 and the rear frame 102. It can be understood that the above scheme can be used to improve the stability of the connection between the front frame 101 and the rear frame 102, and can also be used to solve the problem of locking the lever 106.

[0024] According to this specific embodiment, the front frame 101 is rotatably connected to the rear frame 102, and the front frame 101 and the rear frame 102 are rotatably connected via a hinge, so that the front frame 101 and the rear frame 102 can be folded, thereby reducing the occupied space.

[0025] The first spring 104 is connected to the rear frame 102 and is located inside the rear frame 102. The reinforcing rod 105 is connected to the first spring 104 and is slidably connected to the rear frame 102 and is located at one end of the first spring 104. The shifting rod 106 is fixedly connected to the reinforcing rod 105 and is arranged on the reinforcing rod 105. The connecting seat 107 is fixedly connected to the front frame 101 and is arranged on the front frame 101. The locking seat 108 is slidably connected to the rear frame 102 and is located at the rear frame 102, the driving member 109 is arranged on the rear frame 102 and drives the locking seat 108 to move; the rear frame 102 and the front frame 101 are both provided with cavities that cooperate with the reinforcement rod 105; when the frame needs to be folded, the lever 106 is pushed to drive the reinforcement rod 105 to move, so that the reinforcement rod 105 is moved out of the cavity on the front frame 101 and then all of it is put into the rear frame 102, at this time, the locking seat 108 is driven to move by the driving member 109, so that the locking seat 108 and the reinforcement rod 105 are locked. When the connecting seat 107 is disengaged, the front frame 101 can be rotated, so that the front frame 101 and the rear frame 102 are folded; when the bicycle needs to be used, the lever 106 is pushed again to drive the reinforcing rod 105 to be retracted into the rear frame 102, and then the front frame 101 is rotated to drive the connecting seat 107 to move, so that the connecting seat 107 extends into the rear frame 102, and at this time, the lever 106 is stopped to make the reinforcing rod 105 return to its original position under the action of the first spring 104, so that the reinforcing rod 105 is retracted. The rod 105 extends into the cavity on the front frame 101, and finally the locking seat 108 is driven to rise by the driving member 109, so that the locking seat 108 locks the connecting seat 107, thereby locking the front frame 101 and the rear frame 102. At this time, the reinforcement rod 105 extends into the front frame 101, and the connection between the front frame 101 and the rear frame 102 is reinforced by the reinforcement rod 105, so as to improve the stability of the connection between the front frame 101 and the rear frame 102, thereby avoiding affecting the riding purpose.

[0026] Secondly, the seat body 110 is slidably connected to the rear frame 102 and is located inside the rear frame 102; the locking column 111 is fixedly connected to the seat body 110 and is arranged on the seat body 110; the locking column 111 and the connecting seat 107 are each provided with a plurality of through holes that cooperate with the locking column 111, and the seat body 110 is driven to rise and fall by the driving member 109, so that the seat body 110 drives the locking column 111 to move upward and downward. The locking post 111 is raised and lowered; when the locking post 111 moves upward and extends into the through hole on the connecting seat 107, the connecting seat 107 is connected to the locking post 111, thereby connecting the front frame 101 and the rear frame 102; when the locking post 111 moves downward and moves out of the through hole on the connecting seat 107, the connecting seat 107 and the locking seat 108 are disengaged, and the front frame 101 can be rotated and folded.

[0027] At the same time, the sliding rod 112 is slidably connected to the rear frame 102 and fixedly connected to the seat body 110, and is located inside the rear frame 102; the two ends of the second spring 113 are respectively connected to the sliding rod 112 and the rear frame 102, and the second spring 113 is sleeved on the sliding rod 112.

[0028] In addition, the driving seat 114 is fixedly connected to the shifting rod 106 and is disposed on the shifting rod 106 ; the lifting seat 115 is fixedly connected to the sliding rod 112 and is located on a side of the sliding rod 112 close to the driving seat 114 .

[0029] The second spring 113 is a tension spring, and the driving seat 114 and the lifting seat 115 are provided with arc surfaces; when the front frame 101 rotates and drives the connecting seat 107 to extend into the rear frame 102, the reinforcing rod 105 moves under the action of the first spring 104, and the reinforcing rod 105 also drives the lever 106 to move during the movement, so that the lever 106 drives the driving seat 114 to move, and when the driving seat 114 abuts against the lifting seat 115, the driving seat 114 drives the lifting seat 115 to rise, thereby driving the sliding rod 112, the seat body 110 and the locking column 111 to rise, so that the locking column 111 extends into the through hole on the connecting seat 107 The hole is formed in the front frame 101 and the rear frame 102 to achieve the purpose of connecting the front frame 101 and the rear frame 102; when the frame needs to be folded, the lever 106 is pushed to move, so that the lever 106 drives the driving seat 114 to move, and when the driving seat 114 is away from the lifting seat 115, the lifting seat 115 loses its limit. At this time, the sliding rod 112 and the lifting seat 115 move downward under the action of the second spring 113, thereby driving the seat body 110 and the locking column 111 to move downward, so that the locking column 111 moves out of the through hole on the connecting seat 107, and the connecting seat 107 can move out of the rear frame 102 at this time, thereby achieving the purpose of unlocking the front frame 101.

[0030] When the foldable bicycle frame of the present embodiment is used, when connecting the front frame 101 and the rear frame 102, the lever 106 is first pushed to move, so that the lever 106 drives the reinforcement rod 105 to be retracted into the rear frame 102, so as to prevent the reinforcement rod 105 from interfering with the rotation of the front frame 101; then, the front frame 101 is rotated to drive the plurality of connecting seats 107 to move, so that the connecting seats 107 extend into the rear frame 102, and at this time, the lever 106 is stopped from being pushed, so that the reinforcement rod 105 and the lever 106 are restored under the action of the first spring 104. The lever 106 is reset to the position, and the driving seat 114 is driven to move by the resetting of the lever 106, so that the driving seat 114 drives the lifting seat 115 to rise, thereby driving the seat body 110 and the locking column 111 to rise, so that the locking column 111 can extend into the through hole on the connecting seat 107, thereby connecting the front frame 101 and the rear frame 102; and the reinforcing rod 105 extends into the interior of the front frame 101, thereby reinforcing the connection between the front frame 101 and the rear frame 102, and improving the stability of the connection between the front frame 101 and the rear frame 102.

[0031] Second embodiment:

[0032] Based on the first embodiment, please refer to Figure 6 , Figure 6 2 is a schematic diagram of the installation structure of the threaded rod of the second embodiment. The connection assembly 103 of this embodiment further includes a mounting plate 201 and a threaded rod 202 .

[0033] According to this specific embodiment, the mounting plate 201 is fixedly connected to the rear frame 102 and is arranged on the rear frame 102; the threaded rod 202 is threadedly connected to the mounting plate 201 and is arranged on the mounting plate 201; a limiting hole is provided on the side of the lever 106 close to the threaded rod 202. When the front frame 101 is connected to the rear frame 102, the threaded rod 202 is rotated to move the threaded rod 202 on the mounting plate 201, and then the threaded rod 202 is extended into the limiting hole on the lever 106. At this time, the lever 106 is limited, so as to prevent the lever 106 from moving during riding and causing the front frame 101 to be unlocked, thereby affecting riding.

[0034] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A foldable bicycle frame, comprising a front frame and a rear frame, wherein the front frame is rotatably connected to the rear frame, and characterized in that: Also included are connection components; The connecting assembly includes a first spring, a reinforcement rod, a shift rod, a connecting seat, a locking seat and a driving member. The first spring is connected to the rear frame and is located inside the rear frame. The reinforcement rod is connected to the first spring and is slidably connected to the rear frame and is located at one end of the first spring. The shift rod is fixedly connected to the reinforcement rod and is arranged on the reinforcement rod. The connecting seat is fixedly connected to the front frame and is arranged on the front frame. The locking seat is slidably connected to the rear frame and is located inside the rear frame. The driving member is arranged on the rear frame and drives the locking seat to move.

2. The foldable bicycle frame according to claim 1, characterized in that: The locking seat comprises a seat body and a locking column. The seat body is slidably connected to the rear frame and is located inside the rear frame. The locking column is fixedly connected to the seat body and is arranged on the seat body.

3. The foldable bicycle frame according to claim 2, characterized in that: The driving component includes a sliding rod and a second spring. The sliding rod is slidably connected to the rear frame and fixedly connected to the seat body, and is located inside the rear frame. The two ends of the second spring are respectively connected to the sliding rod and the rear frame, and the second spring is sleeved on the sliding rod.

4. The foldable bicycle frame according to claim 3, characterized in that: The driving component further comprises a driving seat and a lifting seat, wherein the driving seat is fixedly connected to the shifting rod and arranged on the shifting rod; the lifting seat is fixedly connected to the sliding rod and is located on a side of the sliding rod close to the driving seat.

5. The foldable bicycle frame according to claim 1, characterized in that: The connection assembly also includes a mounting plate and a threaded rod. The mounting plate is fixedly connected to the rear frame and is arranged on the rear frame; the threaded rod is threadedly connected to the mounting plate and is arranged on the mounting plate.

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