Gear assembly and tricycle

Abstract

The utility model provides a gear assembly and a tricycle, the gear assembly comprises a gear fixing seat, a gear part and a mounting part which are spliced with each other are formed on the gear fixing seat along a first direction, and the gear part is provided with a plurality of gear grooves which are communicated with each other; the positioning sleeve is arranged in the first direction, the two ends of the positioning sleeve protrude out of the two opposite sides of the mounting part respectively, and one end of the positioning sleeve is arranged below the gear part in a suspended mode; the connecting rod structure comprises a gear connecting rod, a middle connecting rod and an engine connecting rod which are sequentially connected and matched, the end, away from the middle connecting rod, of the gear connecting rod extends to the position above the gear part through any gear groove, and the end, close to the middle connecting rod, of the gear connecting rod coaxially penetrates through the positioning sleeve; and the middle connecting rod and the engine connecting rod are positioned on one side of the mounting part. The gear assembly solves the technical problems that a traditional gear assembly is large in occupied space, and the machining technology and the installation process are relatively complex.

Description

Technical Field

[0001] The utility model relates to the technical field of tricycles, in particular to a gear assembly and a tricycle. Background Art

[0002] The existing gear structure has multiple components connected in the same plane (or the same component is too long), resulting in the structure occupying a large layout space; and requiring a larger number of connecting rods to connect to the engine, and the processing and installation process are relatively complicated. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a gear assembly and a tricycle to solve the technical problems in the related art that the traditional gear assembly occupies a large space and has a relatively complicated processing technology and installation process.

[0004] The utility model provides a gear assembly, comprising:

[0005] A gear fixing seat is formed with a gear portion and a mounting portion spliced ​​to each other along a first direction, and the gear portion is provided with a plurality of interconnected gear slots;

[0006] A positioning sleeve is arranged along the first direction, with two ends of the positioning sleeve protruding from opposite sides of the mounting portion, and one end of the positioning sleeve being suspended below the gear portion; and

[0007] The connecting rod structure includes a gear connecting rod, an intermediate connecting rod and an engine connecting rod that are connected and matched in sequence. The end of the gear connecting rod that is away from the intermediate connecting rod extends to the top of the gear portion through any one of the gear slots, and the end close to the intermediate connecting rod coaxially penetrates the positioning sleeve so that the intermediate connecting rod and the engine connecting rod are located on one side of the mounting portion.

[0008] Furthermore, the gear connecting rod includes an operating rod and a pull rod connected to each other, the operating rod and the pull rod are arranged at an angle, and the distal ends of the two protrude above the gear portion and outside the positioning sleeve respectively.

[0009] Furthermore, the operating lever is provided with a gear knob.

[0010] Furthermore, the intermediate connecting rod includes a rotatably connected connecting base and a rocker arm, which are used to respectively connect the pull rod and the engine connecting rod.

[0011] Furthermore, the connection base and the rocker arm are connected via a first ball head universal joint.

[0012] Furthermore, the rocker arm and the engine connecting rod are connected via a second ball head universal joint.

[0013] Furthermore, the shifting portion and the mounting portion extend toward the second direction to form a first bending portion and a second bending portion respectively, and the first bending portion and the second bending portion are detachably connected.

[0014] Furthermore, the first direction and the second direction are arranged perpendicularly.

[0015] The utility model also provides a tricycle, comprising the gear assembly described above.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the gear fixing seat comprises a gear portion and a mounting portion which are sequentially spliced ​​along a first direction, the gear portion is used to mount the gear connecting rod, and the mounting portion is used to extend into the mounting shell, so as to achieve relative fixation of the gear portion and the mounting shell by fixing the mounting portion in the mounting shell, thereby avoiding the gear shifting caused by shaking during gear shifting; furthermore, the gear fixing seat is provided with a positioning sleeve along the first direction, and the two ends of the gear connecting rod penetrate the positioning sleeve so that one end of the gear connecting rod protrudes above the gear portion, and the other end is used to connect the engine connecting rod through the intermediate connecting rod, which can be smoothly connected to the engine on the one hand, thereby improving the efficiency of force transmission; on the other hand, the gear connecting rod originally located in the same plane can be replaced with two parts located in different planes through the guidance and limitation of the positioning sleeve, thereby changing the mounting position of the gear connecting rod to reduce the overall occupied space of the gear assembly, and at the same time shorten the distance between the gear connecting rod and the engine, and reduce the number of connecting rods used, thereby optimizing its processing technology and installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a gear assembly in one embodiment of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the gear assembly in one embodiment of the utility model from another angle;

[0019] Figure 3 It is a partial exploded view of the connecting rod structure in one embodiment of the utility model.

[0020] Description of Figure Numbers:

[0021] 1. Shift part; 101. Shift slot; 102. First bending part; 2. Mounting part; 201. Second bending part; 3. Positioning sleeve; 4. Shift connecting rod; 401. Operating rod; 402. Pull rod; 403. Shift head; 5. Intermediate connecting rod; 501. Connecting base; 502. Rocker arm; 6. Engine connecting rod; 7. First ball joint universal joint; 8. Second ball joint universal joint.

[0022] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and beneficial effects of the utility model more clear, the technical solution of the utility model is further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] In the embodiment of the present utility model, Figure 1-Figure 2 As shown, the gear assembly includes a gear fixing seat, a positioning sleeve 3 and a connecting rod structure; the gear fixing seat is formed with a gear portion 1 and a mounting portion 2 that are spliced ​​with each other along a first direction, and the gear portion 1 is provided with a plurality of interconnected gear slots 101; the positioning sleeve 3 is arranged along the first direction, and the two ends of the positioning sleeve 3 are respectively protruded from the opposite sides of the mounting portion 2, and one end thereof is suspended below the gear portion 1; the connecting rod structure includes a gear connecting rod 4, an intermediate connecting rod 5 and an engine connecting rod 6 that are connected and matched in sequence, and the end of the gear connecting rod 4 that is away from the intermediate connecting rod 5 extends to the top of the gear portion 1 through any one of the gear slots 101, and the end thereof close to the intermediate connecting rod 5 coaxially passes through the positioning sleeve 3, so that the intermediate connecting rod 5 and the engine connecting rod 6 are located on one side of the mounting portion 2.

[0025] Specifically, in an embodiment of the utility model, the gear fixing seat includes a gear portion 1 and a mounting portion 2 which are spliced ​​in sequence along a first direction, the gear portion 1 is provided with four interconnected gear slots 101 (this embodiment takes the automatic gear as an example), and the mounting portion 2 is used to extend into and be fixed in a mounting shell (not shown); the arrangement of the mounting portion 2, on the one hand, enables the gear portion 1 to be suspended relative to the mounting shell, and the gear portion 1 and the mounting shell are relatively fixed through the mounting portion 2, thereby preventing the gear portion 1 from shaking during gear shifting, resulting in gear disengagement and loud noise; on the other hand, the spliced ​​gear portion 1 and the mounting portion 2 are easy to install, and the structural strength of the gear portion 1 is also improved.

[0026] In an embodiment of the utility model, a positioning sleeve 3 is arranged along the first direction, and the two ends of the positioning sleeve 3 are respectively protruded from the opposite sides of the mounting portion 2, that is, one end of the positioning sleeve 3 extends to the bottom of the gear portion 1, and the other end thereof extends toward the direction of the engine (not shown), thereby playing a guiding role.

[0027] Specifically, one end of the gear connecting rod 4 extends above the gear part 1 through any gear slot 101, and the other end thereof passes through the positioning sleeve 3 along the first direction and is connected to the engine connecting rod 6 through the intermediate connecting rod 5, and the engine connecting rod 6 is used to connect the engine; in this way, the engine can be connected to the engine through three connecting rods, which can reduce the number of connecting rods used and can also be smoothly connected to the engine, shortening the processing and installation time; in addition, the first direction is defined as the direction toward the engine (to the right), then the gear connecting rod 4 can be divided into two parts, that is: one end of one part of the gear connecting rod 4 is located above the gear part 1, and one end of the other part of the gear connecting rod 4 is used to connect the intermediate connecting piece, and the above two parts are located on different planes, respectively, then the original connecting rod located on the same plane can be replaced with two parts located on different planes, shortening the overall length of the gear assembly, thereby reducing the space occupied by its position, and being more suitable for installation requirements in a narrow space. In addition, through the positioning and restriction of the positioning sleeve 3, the activity path of the gear connecting rod 4 can be constrained, the force transmission efficiency can be improved, and the failure rate can be reduced.

[0028] This embodiment changes the installation path of the gear connecting rod 4 by providing a positioning sleeve 3, which not only enables it to be smoothly connected to the engine connecting rod 6 through the intermediate connecting rod 5, thereby reducing the number of connecting rods used; and after optimizing its installation position, it is possible to reduce the overall layout space of the gear assembly, making the structure more compact and easier to install.

[0029] like Figure 3 As shown, in one embodiment, the gear connecting rod 4 includes an operating rod 401 and a pull rod 402 connected to each other, the operating rod 401 and the pull rod 402 are arranged at an angle, and the distal ends of the two protrude above the gear portion 1 and outside the positioning sleeve 3, respectively. Specifically, in order to split the gear connecting rod 4 into two parts, this embodiment defines the gear connecting rod 4 that penetrates the gear portion 1 as the operating rod 401, and the gear connecting rod 4 that penetrates the positioning sleeve 3 as the pull rod 402, so that the operating rod 401 and the pull rod 402 are arranged at an angle; when shifting, external force can be applied to the operating rod 401, so that the intermediate connecting rod 5 is linked to rotate accordingly through the pull rod 402.

[0030] Preferably, the operating rod 401 is provided with a shift knob 403. The shift knob 403 is screwed on the top of the operating rod 401, which is convenient for holding on one hand, and increases the friction between the hand and the operating rod 401 on the other hand, playing the role of anti-slip and fast shifting. Of course, the surface of the shift knob 403 can be provided with anti-slip grooves, or an anti-slip cover can be set on its surface, which plays the role of anti-slip, protection and beauty.

[0031] like Figure 3As shown, in one embodiment, the intermediate connecting rod 5 includes a rotatably connected connecting base 501 and a rocker arm 502, which are used to respectively connect the pull rod 402 and the engine connecting rod 6. Specifically, in order to make the intermediate connecting rod 5 rotate, this embodiment defines the intermediate connecting rod 5 connected to the pull rod 402 as the connecting base 501, and the intermediate connecting rod 5 connected to the engine connecting rod 6 as the rocker arm 502, and the connecting base 501 and the rocker arm 502 are rotatably connected; in this way, under the action of external force, the connecting base 501 and the rocker arm 502 can be relatively rotated through the pull rod 402.

[0032] Preferably, the connection base 501 and the rocker arm 502 are connected via a first ball universal joint 7. Preferably, the rocker arm 502 and the engine connecting rod 6 are connected via a second ball universal joint 8. The ball universal joint connection method makes the rotation smoother and prevents jamming; furthermore, external thread structures can be provided at both ends of the rocker arm 502 for screwing in the corresponding ball universal joints, and the overall length of the exposed rocker arm 502 can be adjusted by adjusting the meshing degree of the ball universal joint and the external thread structure, so as to fine-tune the distance between the gear assembly and the engine and improve assembly efficiency.

[0033] like Figure 1 and Figure 2 As shown, in one embodiment, the shifting portion 1 and the mounting portion 2 extend in the second direction to form a first bending portion 102 and a second bending portion 201, respectively, and the first bending portion 102 and the second bending portion 201 are detachably connected. Specifically, in order to splice the shifting portion 1 and the mounting portion 2, the present embodiment provides the first bending portion 102 and the second bending portion 201 at the proximal ends of the shifting portion 1 and the mounting portion 2, respectively, and both bending portions extend in the second direction and are provided with screw holes for screws to pass through, thereby achieving a detachable connection between the two. Of course, in order to improve the structural strength of the gear fixing seat and the positioning sleeve 3, a through hole can be opened at the second bent portion 201 for the positioning sleeve 3 to pass through and extend to the bottom of the gear portion 1. At the same time, the gap formed between the through hole and the positioning sleeve 3 is welded by surfacing; and in order to avoid opening a through hole in the first bent portion 102, the length of the first bent portion 102 is less than the length of the second bent portion 201, that is: the bottom of the first bent portion 102 is spaced apart from the above-mentioned through hole. Furthermore, the connection of the two bent portions can provide the connection strength between the gear portion 1 and the mounting portion 2; in addition, corresponding bent portions can also be set at the far ends of the two to improve their respective structural strengths, or to adapt to the needs of the installation environment. Specifically, the first direction and the second direction are set vertically. If the above-mentioned first direction is set to the right, then the second direction is set downward.

[0034] The present embodiment also provides a tricycle, including the gear structure described above. The specific structure of the gear structure refers to the above embodiment. Since the tricycle adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described one by one here.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. The gear assembly is characterized by: include: A gear fixing seat is formed with a gear portion and a mounting portion spliced ​​to each other along a first direction, and the gear portion is provided with a plurality of interconnected gear slots; A positioning sleeve is arranged along the first direction, with two ends of the positioning sleeve protruding from opposite sides of the mounting portion, and one end of the positioning sleeve being suspended below the gear portion; and The connecting rod structure includes a gear connecting rod, an intermediate connecting rod and an engine connecting rod that are connected and matched in sequence. The end of the gear connecting rod that is away from the intermediate connecting rod extends to the top of the gear portion through any one of the gear slots, and the end close to the intermediate connecting rod coaxially penetrates the positioning sleeve so that the intermediate connecting rod and the engine connecting rod are located on one side of the mounting portion.

2. The gear assembly according to claim 1, characterized in that: The gear connecting rod comprises an operating rod and a pull rod connected to each other. The operating rod and the pull rod are arranged at an angle, and the distal ends of the operating rod and the pull rod protrude above the gear portion and outside the positioning sleeve, respectively.

3. The gear shift assembly according to claim 2, characterized in that: The operating lever is provided with a shift knob.

4. The gear shift assembly according to claim 2, characterized in that: The intermediate connecting rod comprises a rotatably connected connecting base and a rocker arm, which are used to respectively connect the pull rod and the engine connecting rod.

5. The gear assembly according to claim 4, characterized in that: The connecting base and the rocker arm are connected via a first ball head universal joint.

6. The gear assembly according to claim 4 or 5, characterized in that: The rocker arm is connected to the engine connecting rod via a second ball head universal joint.

7. The gear shift assembly according to claim 1, characterized in that: The shifting portion and the mounting portion respectively extend in a second direction to form a first bending portion and a second bending portion, and the first bending portion and the second bending portion are detachably connected.

8. The gear shift assembly according to claim 7, characterized in that: The first direction and the second direction are arranged perpendicularly.

9. A tricycle, characterized in that: It comprises a gear assembly as described in any one of claims 1 to 8.

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