CN1323959A

CN1323959A - Device for reducing the need of man powder during N-R shifting gear for manual speed variator

Info

Publication number: CN1323959A
Application number: CN00137620A
Authority: CN
Inventors: 成允锡
Original assignee: Hyundai Motor Co
Current assignee: Hyundai Motor Co
Priority date: 2000-05-12
Filing date: 2000-12-29
Publication date: 2001-11-28
Also published as: KR100380053B1; AU7256800A; KR20010104002A; JP2001324011A; DE10065740A1

Abstract

The invention discloses a manual operating force reducing device in a manual transmission during N-R shift. This device is provided with a drag torque applying means acting on the input shaft to generate drag torque in N-R shift, and an N-R shift detecting switch to apply electric signal depending on N-R shift to the drag torque applying means.

Description

In manual transmission, can reduce the device of required manual force in the N-R gearshift procedure

The present invention relates to a kind of device that in manual transmission, can reduce required manual control power in the N-R gearshift procedure.Particularly relate to and a kind ofly begin preceding artificially provides the device that is used for manual transmission from a resisting moment to input shaft at the N-R gearshift procedure, it makes that allowing balk ring can reach synchronously required rotating speed (RPM) difference is minimized, thereby has realized the N-R gearshift procedure with minimum steering force

Synchronizer in manual transmission can be applied to a reverse gear shaft with a normal geared assembly in form, also can not do like this.Do not providing under the situation of normal geared assembly to reverse gear shaft, this synchronizer is classified as single conical surface synchronizer.When carrying out the N-R gear-change operation, with reference to accompanying drawing 4, if a synchronizer sleeve 51 vertically S move and make input shaft 50 synchronous, then be in the motion that the constant torque T that produces on the sense of rotation can hinder synchronizer sleeve 51 at balk ring 53.Therefore, synchronizer sleeve 51 just need have a very big simultaneous force.

In order in traditional manual transmission, to produce required power, used the bipyramid face or three conical surfaces, increased the diameter of lock ring or reduced cone angle to increase synchronizing capacity.Yet, for the N-R gear shift, some problems have appearred on the layout of reverse gear, and the synchronizing capacity when improving the N-R gear shift is difficult to, and has run into noise problem and some other difficulty.

The present invention has done some effort on addressing the above problem.

An object of the present invention is provides such device for manual transmission, it provides a resisting moment to the input shaft artificially when the N-R gear shift begins, make to allow balk ring realize that synchronously required RPM difference reduces, thereby realize the N-R gearshift procedure with minimum steering force

To achieve these goals, the present invention provides a device in manual transmission, and it can lower manual force required in the N-R gearshift procedure, comprising: the resisting moment generation device that produces resisting moment when the N-R gear shift at an input shaft place; And begin the N-R gear shift that forward direction resisting moment generation device provides an electrical signal in the N-R gear shift and survey transducer.

According to feature of the present invention, this resisting moment generation device comprises: a friction element that faces toward the input shaft circumference and engage with input shaft, thus can between friction element and input shaft, produce friction; With an actuator, it can according to the electrical signal that the N-R gear shift is surveyed transducer and provided control friction element near and away from the movement process of input shaft.

Accompanying drawing is included in the specification and constitutes a specification part, and it has represented one embodiment of the present of invention, and, in conjunction with specification text description part, be used to explain principle of the present invention.

Fig. 1 is the part sectioned view of the reverse gear (reverse gear) before operating according to the described device that can reduce required manual control power in the N-R gearshift procedure in manual transmission of the preferred embodiment of the present invention.

Fig. 2 is the part sectioned view according to the reverse gear in the middle of the described device operating process that can reduce required manual control power in the N-R gearshift procedure in manual transmission of the preferred embodiment of the present invention.

Fig. 3 is the part sectioned view of the reverse gear after the described device operation that can reduce the required manual control power of N-R gearshift procedure in manual transmission is finished according to the preferred embodiment of the present invention.

Fig. 4 is an operation chart of finishing the N-R gearshift procedure with the synchronizer of conventional manual transmission.To be described in detail the preferred embodiment of the present invention in conjunction with the accompanying drawings now.

Before Fig. 1,2 and 3 has represented to operate according to the preferred embodiment of the present invention can reduce the required manual control power of N-R gearshift procedure in manual transmission device, in the operating process and the part sectioned view of the reverse gear of operation after finishing.

The device that can reduce the required manual control power of N-R gearshift procedure in manual transmission of the present invention comprises: a resisting moment generator 3, it can produce a resisting moment at input shaft 1 place in the N-R gearshift procedure, survey transducer 5 with a N-R gear shift, it can begin forward direction resisting moment generator 3 in the N-R gear shift provides an electrical signal.This resisting moment generator 3 comprise one with the relative friction element 7 and the actuator 9 of circumference of the input shaft 1 of manual transmission, its can according to the electrical signal that the N-R gear shift is surveyed transducer 5 and provided control friction element 7 near and away from the motion of input shaft 1.The present invention is not limited to only have the situation of a resisting moment generator 3.That is, can be and one or more resisting moment generators 3 are set on input shaft 1 according to the restriction of particular vehicle design aspect.

The friction element 7 and the actuator 9 of resisting moment generator 3 all are installed on the gearbox 11.The N-R gear shift is surveyed transducer 5 and is arranged in the speed change lever unit (not shown) and can gives actuator 9 by operation speed change lever 13 with the power supply in the storage battery 15 before the N-R gearshift procedure is finished.

The operating process to the synchronizer of the operating process of said apparatus of the present invention and reverse gear 17 now is described.

With reference to Fig. 1, when speed change lever 13 is in the N state of neutral gear, because surveying transducer 5, the N-R gear shift do not work, so the power of actuator 9 is cut off.The result is that friction element 7 does not engage with input shaft 1.At this moment, a location that is arranged on the synchronizer sleeve 19 on the synchronizer 21 makes the rotating force of input shaft 1 can not be transferred to reverse gear 17.

As shown in Figure 2, with the position of speed change lever 13 from the N evolution of above-mentioned neutral gear to the process of the R position of a reverse gear, synchronizer sleeve 19 moves in the direction of synchronizer 21 upper edge input shafts 1, until touching balk ring 25.Synchronizer 21 is provided with ball bearing 23, but its assist in synchronization device engagement cover 19 moving on synchronizer 21.Synchronizer 21 itself also can be made slight motion along the direction of balk ring 25.Simultaneously, speed change lever 13 can be handled the N-R gear shift and survey transducer 5, makes that the energy in the storage battery 15 can offer actuator 9.The result is that actuator 9 makes friction element 7 engage with input shaft 1, and resisting moment is offered input shaft 1.

Synchronizer 21 moves until contacting with balk ring 25, and this makes both rotating speeds reach synchronous.Simultaneously, friction element 7 and contacting of input shaft 1 have been reduced the rotational speed of input shaft 1.Therefore, making balk ring 25 reach synchronously required RPM difference has reduced.That is to say, because the resisting moment that friction element 7 is produced on input shaft 1 when speed change begins has reduced the RPM of input shaft 1, so need also reduce significantly by the simultaneous force that balk ring 25 applies.Therefore, when synchronizer sleeve 19 near and arrive and contact with balk ring 25 and during position engaged, it is subjected to the minimal influence of constant torque, thereby mobile synchronizer sleeve 19 required steering forces are reduced to minimum.

Next, with reference to accompanying drawing 3, when speed change lever 13 when the N position of neutral gear has entered the R position of reverse gear fully, the N-R gear shift is surveyed transducer 5 and is in disengaged condition, makes the power that offers actuator be cut off.Therefore, friction element 7 is removed from input shaft 1.At this moment, synchronizer sleeve 19 and balk ring 25 and clutch gear (clutch gear) the 27th, intermeshing, make the rotatory force of input shaft 1 be transferred to reverse gear 17.

At the device that is used for manual transmission of the present invention, before beginning, the N-R gear shift provides a resisting moment to input shaft, and make that allowing balk ring reach synchronously required RPM difference reduces, thereby realized the N-R gearshift procedure with minimum steering force.And whole shift feel improves.Finally, the present invention can access the size of reverse gear balk ring to reduce.

Though above the preferred embodiment among the present invention is described in detail, but those skilled in the art should be able to know clearly, based on above-mentioned basic inventive principle, have multiple multi-form and/or remodeling, it falls into of the present invention by within the design and scope that appended claims limited too.

Claims

1. device that can reduce required manual control power in the N-R gearshift procedure in manual transmission comprises:

The resisting moment generating means, it produces resisting moment at the input shaft place in the N-R gearshift procedure;

Transducer is surveyed in-N-R gear shift, and it provides an electrical signal to the resisting moment generating means when the N-R gearshift procedure begins.

2. the device described in claim 1 is characterized in that, the resisting moment generating means comprises

One friction element, it faces toward the circumference of input shaft, and can engage with input shaft, thereby can produce friction force between friction element and input shaft; And

One actuator, its can according to the N-R gear shift survey electrical signal that transducer provided control friction element near and away from the motion of input shaft.