CN2537629Y

CN2537629Y - External back gear device for motor engine speed changer

Info

Publication number: CN2537629Y
Application number: CN 01257047
Authority: CN
Inventors: 谢光荣; 李东亚
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-27
Filing date: 2001-12-27
Publication date: 2003-02-26
Anticipated expiration: 2011-12-27

Abstract

An external reversing device for a speed transmission of a motorcycle engine comprises a box assembly that can change the rotation direction of a driven axle. The key for the utility model is an operation mechanism mounted on the box for driving the driven axle to change direction as well as a control driver for reversing for controlling the operation mechanism. With the device, a motorcycle can only be reversed at a low gear, namely gear ''I'', this avoids that the number of reverse gears is same with the number of forward gears as in prior art which may result in traffic accidents due to reversing at high gears; the utility model overcomes such shortcomings of prior reversing device as liability of disengaging of gears, skipping gears and burning and damage of parts due to leakage of lube, and can be widely used in speed transmissions of motorcycle engines of different displacements.

Description

The motorcycle engine speed variator external reverse gear unit

(1) technical field:

The utility model relates to a kind of reverse gear, particularly relates to a kind of external reverse gear unit that is widely used in the different displacements speed variator for motorcycle engine.

(2) background technology:

At present, the motor-tricycle that reverse gear is installed adopts the driving engine of countershaft lengthening, only in this way, could be enclosed within the countershaft of driving engine on the drive bevel gear of reverse gear and rotate, reverse gear is bolted on the driving engine with miniature simultaneously, behind the countershaft lengthening of driving engine,, cause reverse gear to throw off driving engine and produce abnormal sound even motor bearing is damaged because the reverse gear vibration easily makes the bolt stripped thread; Because thereby existing reverse gear is to be mounted on the horizontally slipping to realize that with the clutch of the finishing bevel gear cuter end face that is contained in coaxial two ends the commutation of axle, vehicle advance and retreat respectively of end face clutch on the driven shaft.Therefore, occur trip stop and out of supply easily, not only noise is big, and the correlated parts wearing and tearing are aggravated, all adopt sliding stirring inside and outside this in addition, do not establish sealing arrangement again, easily make lubricating oil along flowing out in power-transfer clutch, the axial play, in case oil leakage arrives to a certain degree, finishing bevel gear cuter just can move under unlubricated state, causes damage, and even more serious is that existing reverse gear has several D Drives that several reverse gears are just arranged, navigating mate is not noted slightly like this, just beyond thought traffic accident can take place.

(3) summary of the invention:

The purpose of this utility model is to provide a kind of and has only a low reverse gears, and reduces noise, prevents oil leak, can be widely used in the external reverse gear unit of different displacements speed variator for motorcycle engine.

The purpose of this utility model can reach by the following technical programs, that is: this external reverse gear unit of speed variator for motorcycle engine comprises that can change the casing assembly that driven shaft turns to, and its key is that is contained in a steering unit and a reverse gear Control Driver of controlling this steering unit that is used for ordering about the driven shaft commutation on the casing.

Comprise in the described casing assembly being contained on the master and slave moving axis and the finishing bevel gear cuter that is meshed and a spline clutch cover that is contained on the driven shaft that this spline clutch cover is provided with female splines, two is provided with male splines, and boss place in middle part is fluted; Two driven wheel of differentials that are contained on the driven shaft are equipped with one section female splines; By stirring the clutch of spline clutch cover and two driven wheel of differentials, realize the commutation function of driven shaft, realize the purpose of the advance and retreat of vehicle;

The described steering unit that is used to order about the driven shaft commutation declutch shift shaft is arranged and be contained in successively shift fork on this, taper sheath, spring, pin, and bearing be hinged and be stuck on the pin connecting rod and respectively with shift fork, the joining spline clutch cover of driven shaft;

The reverse gear controller of described control steering unit is by reverse gear control Driver Circuit and two the automatically controlled driving locating dowel pins of being made up of control gate circuit and power amplification circuit W and K switch.

According to the above-mentioned gear reversing device that assembles, its working process such as following:

Working process: when engine speed changer is in " I " when shelves, gear " I " signal is opened control and is driven electronic locating dowel pin with door through anti-phase amplification and move up.Skid off right groove, steering unit moves right declutch shift shaft, and compression spring drives and sails the spline clutch cover and mesh from the mantle tooth, realizes reversing.Meanwhile, taper sheath makes the K switch closure.Electronic locating dowel pin inserts left groove downwards, finishes up to reversing.When driving engine gear during at the II-V gear, " I " shelves signal is eliminated, the actuator outgoing current is 0, under the effect of spring, electronic locating dowel pin upwards shifts out left groove, and spring forces declutch shift shaft to be moved to the left, and electronic locating dowel pin inserts right groove, spline clutch cover and another driven wheel of differential engagement this moment, vehicle moves forward.

The utility model compared with prior art has the following advantages:

1. because in the casing assembly, all and position casing exterior is equipped with seal rubber sleeve, can effectively prevent the oil leak in the case, make interior each part of case be in good lubricating status in the course of the work, not only avoided the dry grinding phenomenon to take place, and the service life of having improved whole device significantly.

2. because drive bevel gear is provided with female splines, can directly be contained on the countershaft spline of driving engine, box bottom and vehicle frame plate combine as a whole in addition, not only can avoid in the prior art because countershaft is long, the Yi Sheng vibration, the easily deficiency of generation mechanical breakdown, and box bottom can change design with the need, so can be widely used in the speed variator for motorcycle engine of different displacements.

3. owing to only be provided with a low reverse gears, can prevent the traffic accident that is caused in the high speed gear reversing because of carelessness when navigating mate is moveed backward in the prior art effectively.

4. because the setting of spline clutch cover and two driven wheel of differential female spliness makes its clutch steady; Because the setting of electronic locating dowel pin makes it in working order down, has controlled the play of declutch shift shaft effectively, has avoided in the prior art out of supply, trip stop phenomenon that the end face clutch is brought, and the service life of having improved correlated parts.

(4) description of drawings:

Fig. 1 is the utility model overall construction drawing;

Fig. 2 is Figure 1A-A section-drawing;

Fig. 3 is the utility model electrical equipment control driving principle figure.

(5) specific embodiment:

Referring to Fig. 1, Fig. 2 the utility model external reverse gear unit of speed variator for motorcycle engine, can change the casing assembly that driven shaft turns to by one, one is contained in and is used for ordering about the steering unit of driven shaft (9) commutation on the casing and the reverse gear Control Driver of this steering unit of control is formed.Wherein:

The stifle 4 that the casing assembly is connected with it by casing 1, cover 3 thoroughly, be contained in the bearing 19 in stifle 4 and the saturating lid 3 respectively, the driven shaft 9 that is supported by bearing 19, be contained in two driven wheel of differential 7,8 and spline clutch covers 10 on the driven shaft 9, with main shaft 24 splined and the drive bevel gear 6 that is meshed with two driven wheel of differentials 7,8, the seal rubber sleeve 20 that drive bevel gear 6 endoporus and casing 1 inner chamber are isolated, be used for bearings mounted bearing seat 18, joining base plate 2 of casing assembly and vehicle frame and case lid 5 are constituted.

The steering unit that is used for ordering about driven shaft 9 commutations has a declutch shift shaft 12, and declutch shift shaft 12 is contained in casing 1 top, and shift fork 11, taper sheath 17, spring 16, pin 22 are housed on the declutch shift shaft from left to right successively; Connecting rod 23 middle parts and bearing 21 are hinged, the end is stuck on the pin 22, and shift fork one end is stuck in the groove of spline clutch cover 10.

The reverse gear controller 13 of control steering unit is by reverse gear control Driver Circuit and two the automatically controlled driving locating dowel pins of being made up of control gate circuit and power amplification circuit W and

K switch

14,15.

Claims

1. external reverse gear unit of speed variator for motorcycle engine, comprise that can change the casing assembly that driven shaft turns to, it is characterized in that is contained in a steering unit and a reverse gear Control Driver of controlling this steering unit that is used for ordering about driven shaft (9) commutation on the casing.

2. according to the described external reverse gear unit of claim 1, the steering unit that it is characterized in that being used for ordering about driven shaft (9) commutation has a declutch shift shaft (12), declutch shift shaft (12) is contained in casing (1) top, and shift fork (11), taper sheath (17), spring (16), pin (22) are housed on declutch shift shaft (12) from left to right successively; Connecting rod (23) middle part is hinged with bearing (21), and the end is stuck on the pin (22); Shift fork (11) one ends then are stuck in the groove of spline clutch cover (10).

3. according to the described external reverse gear unit of claim 2, it is characterized in that spline clutch cover (10) is provided with female splines, two is provided with male splines, and boss place in middle part is provided with groove.

4. according to the described external reverse gear unit of claim 1, the reverse gear controller that it is characterized in that controlling steering unit is by reverse gear control Driver Circuit and two the automatically controlled driving locating dowel pins of being made up of control gate circuit and power amplification circuit W and K switch (14,15).

5. according to the described external reverse gear unit of claim 1, it is characterized in that the driven wheel of differential (7,8) in the casing assembly is provided with one section female splines.

6. according to the described external reverse gear unit of claim 1, it is characterized in that allly in the casing assembly being equipped with seal rubber sleeve (20) with the position casing exterior.