CN2547630Y

CN2547630Y - Coupling transmission fork

Info

Publication number: CN2547630Y
Application number: CN 02237253
Authority: CN
Inventors: 涂建华
Original assignee: LONGXIN GROUP CO Ltd
Current assignee: LONGXIN GROUP CO Ltd
Priority date: 2002-06-06
Filing date: 2002-06-06
Publication date: 2003-04-30
Anticipated expiration: 2012-06-06

Abstract

A coupling transmission fork comprises an upper fork and a lower fork with center positions connected together, wherein, two circular ring shapes with certain section thickness are respectively surrounded by the upper fork and the lower fork; the circle centers of two circular rings are positioned on the same axis; two respective fork bodies are formed by symmetrically cutting the upper circular ring body and the lower circular ring body into two parts; mutually parallel transmission shaft positioning holes are respectively arranged on each fork body; an upper double fork and a lower double fork differ in an included angle of 90 degrees. An input shaft and an output shaft are respectively sleeved on mounting holes of the upper double fork and the lower double fork of the coupling transmission fork, and the requirements of concentricity can be automatically met, i.e. the concentricity problem between two shafts does not need to be considered in the whole design, machining and assembly process of products any more, which leads the dismounting operation of double shafts to be more convenient and rapider, and leads the transmission performance of the utility model to be steadier and more reliable.

Description

The coupler transmission fork

Technical field

The utility model relates to a kind of motor bike transmission mechanism component, particularly relates to a kind of in order to the power transfer assembly between the transmission shaft in the forward and backward transmission gearbox of motor bike.

Background technology

In the prior art; on the coupler in the two-wheeled motor vehicle shaft drive; link gear in the middle of all not being provided with between input shaft in laying respectively at forward and backward transmission gearbox and the output shaft; in order to guarantee their can normal operation go forward side by side transmission of power of line stabilization; so just require two axles when assembling must strict guarantee its be set on the concentric axis; and because causes such as car body vibrations; between diaxon, usually can locate inaccurate or be easy to produce skew, thereby influence the normal performance of its function.

Summary of the invention

The purpose of this utility model is to provide a kind of coupler transmission fork that can overcome the defective that exists in the prior art, it is a link gear in the middle of being provided with between input shaft in forward and backward transmission gearbox and the output shaft, it is on upper and lower two donuts and differs two fork structures of 90 degree, guaranteed when this input shaft and output shaft are inserted the two ends of this transmission fork respectively, can directly realize concentricity assembling requirement.

The purpose of this utility model is achieved in that a kind of coupler transmission fork, it comprises upper fork 1,2 and the next fork 3,4 that is linked together by the center, described upper and lower fork 1,2 and 3,4 surrounds two torus shapes with certain section thickness respectively, and the circle centre position of these upper and lower two annulus is on same axis, form separately two fork bodies by will this upper and lower torus symmetry blocking two parts, on each fork body, be respectively arranged with the transmission shaft knock hole 6,7 and 8,9 that is parallel to each other, differ 90 degree angles between upper and lower two forks.

Adopt coupler transmission fork of the present utility model, because two forks that its upper/lower terminal is provided with respectively are on upper and lower two donuts, and between differ 90 the degree angles, just as the propeller-shaft that has shortened, input shaft and output shaft are enclosed within respectively in the mounting hole of upper and lower two forks, can satisfy concentricity requirement automatically, like this, just can in design, processing and the fitting process of entire product, no longer consider two interaxle concentricity problems, make two-axle dismounting operation more simple and efficient, its transmission performance is also more solid and reliable.

Description of drawings

Fig. 1 is a coupler transmission fork front view of the present utility model;

Fig. 2 is the left view of coupler transmission fork shown in Figure 1;

Fig. 3 is the birds-eye view of coupler transmission fork shown in Figure 1.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described.

As shown in Figure 1: coupler transmission fork of the present utility model comprises the upper fork 1 that is linked together by the center, 2 and the next fork 3,4, on described, the next fork 1,2 and 3,4 surround two torus shapes with certain section thickness respectively, and on being somebody's turn to do, the circle centre position of following two annulus is on same axis, by going up, following torus symmetry is blocked two parts and is formed separately two fork bodies, 90 degree because the two parts that blocked in following torus and the two parts that blocked in last torus stagger mutually are so just last, 90 degree angles have been formed between the following pair of fork.

In order to fixedly mount input shaft and the output shaft that is arranged in forward and backward transmission gearbox, each fork be respectively arranged with on body the transmission shaft knock hole 6,7 that is parallel to each other, and 8,9,, described like this input shaft and output shaft just can be enclosed within knock hole 6,7 respectively, reach knock hole 8,9, in.

The center that connects described upper and lower fork 1,2 and 3,4 is provided with transmission fork mounting hole 5, this coupler transmission fork can be fixed on the motor bike by connecting elements such as screws.

Owing on the fork body, be provided with knock hole 6,7, reach after 8,9, the intensity of each tapping has all reduced many inevitably, formed the weak link of this product, in order to increase this locational thickness, and then enhancing intensity, transmission shaft knock hole 6,7 and 8,9 outside correspondence positions at each fork body are provided with the reinforcing boss respectively, thereby make it be not easy to produce fracture, have increased the work life of product.

When work, because two forks that its upper/lower terminal is provided with respectively are on upper and lower two donuts, and differ 90 degree angles each other, input shaft and output shaft are enclosed within respectively in the mounting hole of upper and lower two forks, can satisfy the concentricity requirement of its assembling automatically.

Claims

1, a kind of coupler transmission fork, it is characterized in that: it comprises the upper fork (1 that is linked together by the center, 2) and the next fork (3,4), on described, the next fork (1,2) reach (3,4) surround two torus shapes respectively with certain section thickness, and on being somebody's turn to do, the circle centre position of following two annulus is on same axis, by going up, following torus symmetry is blocked two parts and is formed separately two fork bodies, on each fork body, be respectively arranged with the transmission shaft knock hole (6 that is parallel to each other, 7) reach (8,9), last, differ 90 degree angles between the following pair of fork.

2, coupler transmission fork according to claim 1 is characterized in that: the center that connects described upper and lower fork (1,2) and (3,4) is provided with transmission fork mounting hole (5).

3, coupler transmission fork according to claim 1 and 2 is characterized in that: transmission shaft knock hole (6,7) and (8,9) outside correspondence position at each fork body are respectively arranged with the reinforcing boss.