Splicing type differential gear with adjustable tooth number

Abstract

The utility model relates to the technical field of bicycle variable gears, and discloses a spliced differential gear with adjustable tooth number, which comprises a main body fluted disc, a splicing mechanism is arranged on the right side of the main body fluted disc, and a fixing mechanism is arranged in the splicing mechanism. According to the splicing type differential gear with the adjustable tooth number, through the arrangement of the fixing mechanism, a worker only needs to rotate the rotary drum to drive the clamping blocks to move to complete dismounting or mounting work on the clamping base, and the working efficiency of the worker during replacement of the clamping base is improved; under the action of the compression spring, the sliding sheet drives the clamping block to always keep a force for moving towards the outer side, so that the clamping block can keep being clamped on the outer side of the clamping seat and in the sleeve frame to fix the clamping seat under the condition of no external force, and meanwhile, the compression spring applies force to drive the sliding sheet to move towards the outer side; the centrifugal force generated when the clamping seat rotates cannot cause the reduction of the connection strength between the clamping seat and the main body fluted disc, and the stability of the clamping seat after installation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle speed-changing gears, in particular to a spliced ​​differential gear with adjustable teeth. Background Art

[0002] The speed change system of a bicycle changes the speed by changing the coordination between the chain and the front and rear gear plates of different sizes. The size of the front and rear gear plates determines the force of the bicycle pedal. The larger the front gear plate and the smaller the rear gear plate, the more effort it will feel when pedaling. The smaller the front gear plate and the larger the rear gear plate, the easier it will feel when pedaling. According to the ability of different riders, the size of the front and rear gear plates can be adjusted to adjust the speed of the bicycle or to cope with different road sections and road conditions.

[0003] The differential gears in the existing bicycle transmission system are mostly fixed and installed directly by bolts, and the number of bolts is large and small, and the connection strength between different sprockets after installation is increased by a uniformly distributed number. During the use of the transmission system, if one of the sprockets is damaged, the staff needs to use tools to remove and install the fixing bolts in turn to complete the replacement of the sprocket, which is time-consuming and laborious, has low work efficiency, and is inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide a spliced ​​differential gear with adjustable number of teeth to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a spliced ​​differential gear with adjustable number of teeth, comprising a main gear disc, a splicing mechanism is arranged on the right side of the main gear disc, and a fixing mechanism is arranged inside the splicing mechanism.

[0006] The splicing mechanism comprises a main body component and a clamping component. The main body component is arranged on the outside of the main body toothed disc, and the clamping component is arranged on the right side of the main body toothed disc.

[0007] The fixing mechanism comprises a positioning assembly and a disassembling assembly, wherein the positioning assembly is arranged in the clamping assembly, and the disassembling assembly is arranged in the right side of the clamping assembly.

[0008] Preferably, the main body component includes a first connecting arm, the first connecting arm is fixedly connected to the outer ring of the main body gear disc, the outer ring of the first connecting arm is fixedly connected to a first gear ring, the main body gear disc is fixedly connected to a card frame, the outer side of the card frame is fixedly connected to a reinforcing fin, and the reinforcing fin is fixedly connected to the left side of the main body gear disc.

[0009] Preferably, the clamping assembly includes a clamping seat, which is arranged on the right side of the main gear disk, and the clamping seat is clamped to the outside of the clamping frame. The outer ring of the clamping seat is sleeved with a sleeve frame, and the sleeve frame is fixedly connected to the right side of the main gear disk. The outer ring of the clamping seat is fixedly connected to a second connecting arm, and the outer side of the second connecting arm is fixedly connected to a second gear ring.

[0010] Preferably, the positioning assembly includes a slide, the slide is slidably connected in the socket, a clamping block is fixedly connected to the outer side of the slide, the clamping block passes through the socket and is clamped in the sleeve frame, and a compression spring is fixedly connected to the inner side of the slide.

[0011] Preferably, the disassembly assembly comprises a rotating drum, which is rotatably connected to the right side of the holder, a hexagonal twist groove is provided on the right side of the rotating drum, and a connecting rope is fixedly connected to the outer ring of the rotating drum.

[0012] Preferably, the connecting rope is slidably connected in the holder, the connecting rope is fixedly connected to the inner side of the slide, and the connecting rope is sleeved on the inner ring of the compression spring.

[0013] Compared with the prior art, the utility model provides a spliced ​​differential gear with adjustable number of teeth, which has the following beneficial effects:

[0014] 1. The spliced ​​differential gear with adjustable number of teeth has a splicing mechanism, and the card frame is clamped in the left side of the card seat and cooperates with the sleeve frame to limit the card seat, so that the card seat cannot rotate on the right side of the main gear disc after installation, thereby increasing the stability of the card seat after installation.

[0015] 2. The spliced ​​differential gear with adjustable number of teeth has a fixing mechanism set up, so the staff only needs to rotate the drum to drive multiple blocks to move to complete the disassembly or installation of the card holder, which increases the work efficiency of the staff when replacing the card holder. The slide drives the block to always maintain the force of moving outward under the action of the compression spring, so that the block can keep itself connected to the outside of the card holder and the frame to complete the fixation of the card holder in the absence of external force. At the same time, the compression spring applies force to drive the slide to move outward, so that the centrifugal force generated by the card holder during rotation will not cause the connection strength between the card holder and the main gear disk to decrease, thereby increasing the stability of the card holder after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0017] Figure 1 It is a front schematic diagram of the utility model;

[0018] Figure 2 This is the right side exploded view of the utility model;

[0019] Figure 3 This is a left-side exploded view of the utility model;

[0020] Figure 4 It is a sectional view of the main gear disc structure;

[0021] Figure 5 It is a partial structural sectional view of the utility model;

[0022] Figure 6 It is a schematic diagram of the partial structure of the disassembled components;

[0023] Figure 7 This is a schematic diagram of the partial structure of the positioning component.

[0024] In the figure: 1. splicing mechanism; 11. main body component; 1101. first connecting arm; 1102. first gear ring; 1103. clamping frame; 1104. reinforcing fin; 12. clamping assembly; 1201. clamping seat; 1202. sleeve frame; 1203. second connecting arm; 1204. second gear ring; 2. fixing mechanism; 21. positioning assembly; 2101. slide; 2102. clamping block; 2103. compression spring; 22. disassembly assembly; 2201. rotating drum; 2202. hexagonal twist groove; 2203. connecting rope; 3. main body gear disc. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The utility model provides a technical solution:

[0028] Embodiment 1

[0029] Combination Figures 1 to 5 A spliced ​​differential gear with adjustable number of teeth includes a main gear disc 3, a splicing mechanism 1 is arranged on the right side of the main gear disc 3, and a fixing mechanism 2 is arranged inside the splicing mechanism 1.

[0030] The splicing mechanism 1 includes a main body component 11 and a clamping component 12 . The main body component 11 is arranged on the outside of the main body gear disc 3 , and the clamping component 12 is arranged on the right side of the main body gear disc 3 .

[0031] The main body component 11 includes a first connecting arm 1101, which is fixedly connected to the outer ring of the main body toothed disc 3. The outer ring of the first connecting arm 1101 is fixedly connected to a first toothed ring 1102. A clamping frame 1103 is fixedly connected inside the main body toothed disc 3. The outer side of the clamping frame 1103 is fixedly connected to a reinforcing fin 1104. The reinforcing fin 1104 is fixedly connected to the left side of the main body toothed disc 3. The clamping component 12 includes a clamping seat 1201. The clamping seat 1201 is arranged on the right side of the main body toothed disc 3. The clamping seat 1201 is clamped to the outer side of the clamping frame 1103. The outer ring of the clamping seat 1201 is sleeved with a sleeve frame 1202. The sleeve frame 1202 is fixedly connected to the right side of the main body toothed disc 3. The outer ring of the clamping seat 1201 is fixedly connected to a second connecting arm 1203. The outer side of the second connecting arm 1203 is fixedly connected to a second toothed ring 1204.

[0032] Furthermore, the card frame 1103 is connected to the left side of the card holder 1201 and cooperates with the sleeve frame 1202 to limit the card holder 1201, so that the card holder 1201 cannot rotate on the right side of the main body gear plate 3 after installation, thereby increasing the stability of the card holder 1201 after installation.

[0033] Embodiment 2

[0034] See also Figures 1 to 3 and Figures 5 to 7 On the basis of the first embodiment, it is further obtained that the fixing mechanism 2 includes a positioning component 21 and a disassembling component 22 , the positioning component 21 is arranged in the clamping component 12 , and the disassembling component 22 is arranged in the right side of the clamping component 12 .

[0035] The positioning component 21 includes a slide 2101, which is slidably connected to the base 1201. A block 2102 is fixedly connected to the outside of the slide 2101. The block 2102 passes through the base 1201 and is clamped in the sleeve frame 1202. A compression spring 2103 is fixedly connected to the inside of the slide 2101. The disassembly component 22 includes a rotating drum 2201, which is rotatably connected to the right side of the base 1201. A hexagonal twist groove 2202 is provided on the right side of the rotating drum 2201. A connecting rope 2203 is fixedly connected to the outer ring of the rotating drum 2201. The connecting rope 2203 is slidably connected to the base 1201. The connecting rope 2203 is fixedly connected to the inner side of the slide 2101, and the connecting rope 2203 is sleeved on the inner ring of the compression spring 2103.

[0036] Furthermore: the staff only needs to rotate the rotating drum 2201 to drive the multiple blocks 2102 to move and complete the disassembly or installation of the card base 1201, thereby increasing the work efficiency of the staff when replacing the card base 1201. Under the action of the compression spring 2103, the slide 2101 drives the block 2102 to always maintain the force of moving outward, so that the block 2102 can keep itself connected to the outside of the card base 1201 and the inside of the frame 1202 without external force to complete the fixation of the card base 1201. At the same time, the compression spring 2103 applies force to drive the slide 2101 to move outward, so that the centrifugal force generated by the card base 1201 during rotation will not cause the connection strength between the card base 1201 and the main gear disc 3 to decrease, thereby increasing the stability of the card base 1201 after installation.

[0037] In actual operation, when the device is used, when the holder 1201 on the right side of the main gear disc 3 needs to be replaced, the staff first uses an inner hexagonal wrench to insert the hexagonal twist groove 2202 to drive the rotating drum 2201 to rotate. When the rotating drum 2201 rotates, the connecting rope 2203 is wound around the outer ring of the rotating drum 2201 to drive the slide 2101 to move inward, and the inward movement of the slide 2101 drives the hexagonal twist groove 2202 to move inward. The hexagonal twist groove 2202 moves inward and retracts into the holder 1201 to release the connection with the sleeve frame 1202. After that, the staff can move the holder 1201 to the right to complete the disassembly of the existing holder 1201.

[0038] Afterwards, the staff inserts the hexagonal wrench into the hexagonal twist groove 2202 on the right side of the newly replaced holder 1201 and rotates it, repeating the above process to make the block 2102 retract inward into the holder 1201, and then the staff moves the holder 1201 to the right side of the main gear disk 3, so that the holder 1201 is engaged in the sleeve frame 1202 and is engaged with the sleeve frame 1103 on the outside of the sleeve frame 1103. Finally, the staff moves the hexagonal wrench to the right to disengage it from the rotating drum 2201. At this time, the slide 2101 drives the block 2102 to move outward under the action of the compression spring 2103, and the block 2102 moves outward through the holder 1201 and is engaged in the sleeve frame 1202. At this time, the replacement of the holder 1201 is completed, and the change of the number of teeth data of the holder 1201 is completed.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A spliced ​​differential gear with adjustable number of teeth, comprising a main gear disc (3), characterized in that: A splicing mechanism (1) is provided on the right side of the main body gear disc (3), and a fixing mechanism (2) is provided inside the splicing mechanism (1); The splicing mechanism (1) comprises a main body component (11) and a clamping component (12), wherein the main body component (11) is arranged on the outside of the main body toothed disc (3), and the clamping component (12) is arranged on the right side of the main body toothed disc (3); The fixing mechanism (2) comprises a positioning component (21) and a disassembling component (22); the positioning component (21) is arranged in the clamping component (12), and the disassembling component (22) is arranged in the right side of the clamping component (12).

2. The spliced ​​differential gear with adjustable number of teeth according to claim 1, characterized in that: The main body component (11) comprises a first connecting arm (1101), the first connecting arm (1101) being fixedly connected to the outer ring of the main body toothed disc (3), the outer ring of the first connecting arm (1101) being fixedly connected to a first toothed ring (1102), a clamping frame (1103) being fixedly connected inside the main body toothed disc (3), a reinforcing fin (1104) being fixedly connected to the outer side of the clamping frame (1103), and the reinforcing fin (1104) being fixedly connected to the left side of the main body toothed disc (3).

3. The spliced ​​differential gear with adjustable number of teeth according to claim 1, characterized in that: The clamping assembly (12) comprises a clamping seat (1201), wherein the clamping seat (1201) is arranged on the right side of the main body toothed disc (3), the clamping seat (1201) is clamped to the outside of the clamping frame (1103), the outer ring of the clamping seat (1201) is sleeved with a sleeve frame (1202), the sleeve frame (1202) is fixedly connected to the right side of the main body toothed disc (3), the outer ring of the clamping seat (1201) is fixedly connected to a second connecting arm (1203), and the outer side of the second connecting arm (1203) is fixedly connected to a second gear ring (1204).

4. The spliced ​​differential gear with adjustable number of teeth according to claim 1, characterized in that: The positioning assembly (21) comprises a slide (2101), the slide (2101) is slidably connected in the card seat (1201), a clamping block (2102) is fixedly connected to the outer side of the slide (2101), the clamping block (2102) passes through the card seat (1201) and is clamped in the sleeve frame (1202), and a compression spring (2103) is fixedly connected to the inner side of the slide (2101).

5. The spliced ​​differential gear with adjustable number of teeth according to claim 1, characterized in that: The disassembly assembly (22) comprises a rotating drum (2201), wherein the rotating drum (2201) is rotatably connected to the right side of the holder (1201), a hexagonal twisting groove (2202) is provided on the right side of the rotating drum (2201), and a connecting rope (2203) is fixedly connected to the outer ring of the rotating drum (2201).

6. The spliced ​​differential gear with adjustable number of teeth according to claim 5, characterized in that: The connecting rope (2203) is slidably connected to the inside of the holder (1201), the connecting rope (2203) is fixedly connected to the inner side of the slide (2101), and the connecting rope (2203) is sleeved on the inner circle of the compression spring (2103).

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