JPH06265018A - Speed change operating device for transmission - Google Patents

Abstract

PURPOSE:To provide a speed change operating device for a manual transmission by which vibration transmitted to an operating system from a sleeve of a synchronous device through a shift fork can be reduced without, deteriorating an operation feeling. CONSTITUTION:A speed change operating device has a control arm 3 to transmit operation force to a shift rod 4 by receiving the operation force from a shift lever, an arm member 7 arranged integrally on the shift rod 4 and a fork member 10 to move a sleeve in the shaft line direction by engaging with the sleeve of a synchronous device, and a shaft body 9 is arranged on one end of the arm member 7 so as to support the fork member 10 rotatably around a prescribed shaft line L on one end of the arm member 7, and the fork member 10 is fitted rotatably on this shaft body 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a gear shift operating device for a manual transmission of an automobile.

[0002]

2. Description of the Related Art Conventionally, in a manual transmission of an automobile,
The shift fork for 1-2 speed, the shift fork for 3-4 speed, and the shift fork for 5 speed are provided with three shift rods respectively fixed, and the operating force is received by the operating force from the shift lever. Of one of the above three shift rods by a control arm that transmits the
The book is selected so that the gear is changed.

However, when the shift fork is rigidly connected to the shift rod, the vibration input to the shift fork via the sleeve (clutch hub / sleeve) of the transmission causes a shift operation system such as a shift lever. There was a problem of being transmitted to.

Therefore, for example, in Japanese Utility Model Laid-Open No. 59-70228.
In the mounting structure of the shift fork disclosed in Japanese Patent Publication, pin holes are provided in both the shift rod and the boss of the shift fork through which the shift rod is inserted, the pins are fitted in both pin holes, and the pins are orthogonal to the pin. A boss hole is formed so as to form a gap on both sides of the shift rod, and the boss and the shift rod are relatively displaceable around the pin, and the vibration input to the shift fork is transmitted to the gear shift operation system. Are prevented.

Further, in the case where the cable type operation force transmitting means is provided in the middle of the gear shift operation system, the vibration input to the shift fork is transmitted to the inner member of the cable, and the inner member vibrates in the outer member. However, since there is a problem that a so-called hit sound is generated, it has been conventionally performed to fill the cable with high-viscosity silicone oil or the like to suppress vibration.

[0006]

By the way, in the case of an FF vehicle (front wheel drive vehicle) in which the shift lever and the transmission are separated from each other and a link mechanism or a cable is interposed between them,
It has been pointed out that it is inferior in terms of gear shifting operability (operation feeling) compared to FR vehicles (rear-wheel drive vehicles) in which the shift lever is directly connected to the transmission, and in order to improve this operation feeling. However, it is desirable that the shift fork has high support rigidity.

However, in the structure described in the above publication, since the thin pin is interposed between the shift rod and the shift fork, the supporting rigidity of the shift fork is low, which has a drawback that the operation feeling is deteriorated. .

Further, in the case where the cable type operation force transmitting means is provided, when the cable is filled with high-viscosity silicone oil or the like, it becomes a resistance to the shift operation, which also deteriorates the operation feeling. It was.

In view of the above-mentioned circumstances, the present invention is capable of reducing the vibration transmitted from the sleeve of the synchronizer to the operating system through the shift fork without deteriorating the operating feeling. An object is to provide an operating device.

[0010]

A gear shift operating device for a transmission according to the present invention includes a control arm which receives an operating force from a shift lever and transmits the operating force to a shift rod.
An arm member provided integrally with the shift rod,
A fork member that engages with the sleeve of the synchronizer to move the sleeve in the axial direction, and one end of the arm member for rotatably supporting the fork member around a predetermined axis at one end of the arm member. And a fork member shaft support means provided between the fork member and the fork member.

[0011]

According to the present invention, between the one end of the arm member and the fork member, the fork member pivotal support capable of rotatably supporting the fork member around the predetermined axis at the one end of the arm member. By providing the means, the fork member can be pivotally supported on one end of the arm member by a shaft having a relatively radius.

Therefore, even if the fork member is rotatably provided, the support rigidity of the fork member can be increased, and this allows transmission from the sleeve of the synchronizing device to the operating system via the shift fork. Vibrations can be reduced without worsening the operational feel.

Further, even in the case where the cable-type operation force transmitting means is provided, it is not necessary to fill the cable with silicone oil or the like which deteriorates the operation feeling.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional front view showing an essential part of an embodiment of the present invention, FIG. 2 is a plan view looking down from a plane along the line II--II in FIG. 1, and FIG. 3 is a side view.

In the figure, a control rod 1 that is slid in the axial direction and swung around the axial line in response to an operating force from a shift lever (not shown) operated by a driver is a transmission case 2. Is provided in
A control arm 3 is fixed to the control rod 1. Below the control arm 3, there are three shift rods extending in a direction orthogonal to the control rod 1, that is, 3-4 speed shift rods 4 and 1-2.
Speed shift rod 5 and 5 speed-reverse shift rod 6
And are respectively arranged so as to be slidable in the axial direction.

The shift fork provided on the 3-4 speed shift rod 4 includes an arm member 7 and a fork member 10.
Are configured separately, and the arm member 7 is fixed to the shift rod 4. The arm member 7 includes a boss portion 7a fixed to the shift rod 4 by a pin 8, a first arm portion 7b extending from the boss portion 7a in a direction orthogonal to the shift rod 4, and a first boss portion 7a to the first arm portion 7b. A second arm portion 7c is provided which extends in a direction opposite to the arm portion 7b side and then extends in a direction parallel to the shift rod 4.

At the tip of the first arm portion 7b of the arm member 7, there is integrally provided a cylindrical shaft body 9 having an axis L extending in a direction orthogonal to the axis of the shift rod 4. 3-4 with hole 10a fitted in shaft 9
A speed fork member 10 is rotatably fitted to the shaft body 9. In addition, the second arm portion 7 of the arm member 7
An engagement groove 11A opening upward is formed in c, and an engagement end portion 3a formed at the lower end of the control arm 3 is selectively formed in the engagement groove 11 as the control rod 1 slides. Engage with. Then, the shift rod 4 is slid in the axial direction in accordance with the swing motion of the control rod 1 in this engaged state, whereby the 3-4 speed fork member 10 is actuated, and
The gear of the fourth speed or the fourth speed is selected.

With respect to the shift rod 5 for the 1st-2nd speed and the shift rod 6 for the 5th-reverse, the engaging groove 11 with which the engaging end 3a of the control arm 3 selectively engages.
Arm members 12 and 1 having B and 11C at their upper ends, respectively.
3 are provided, and the roots of these arm members 12 and 13 are fixed by pins 8 respectively. The three engagement grooves 11A, 11B, 11C are aligned along the axial direction of the control rod 1 with the engagement groove 11A as the center and close to each other. A 1-2 speed shift fork 14 is fixed to the 1-2 speed shift rod 5,
A fifth speed shift fork 15 is fixed to the fifth speed-reverse shift rod 6.

With this configuration, when the control rod 1 is at the center position of its sliding range as shown in FIG. 1, the engaging end portion 3a of the control arm 3 engages with the engaging groove 11A, When the control rod 1 is slid to the left from the center position in FIG. 1, the engagement end 3a engages with the engagement groove 11B, and when the control rod 1 is slid to the right from the center position in FIG. , The engaging end portion 3a is engaged with the engaging groove 11C, and the control rod 1 is slid in the axial direction in response to an operating force from a shift lever (not shown) operated by the driver. The operation force can be transmitted to each of the shift rods 4, 5 and 6 selectively.

The control arm 3 is integrally provided with a guide pin 16 extending upward, and the guide pin 16 is engaged with a guide groove 17a of a guide plate 17 fixed to the case 2 above the control arm 3. Therefore, the movement of the control rod 1 is accurately regulated.

The above is the configuration of the embodiment of the gear shift operating device of the transmission according to the present invention. According to this embodiment, the fork member 10 is the shaft body 9 formed at the tip of the arm portion 7b of the arm member 7. Since it is rotatably supported by the fork, the supporting rigidity of the fork member 10 can be increased, and thus the vibration transmitted from the sleeve of the synchronizer to the operating system via the shift fork can be provided with an operating feeling. It can be reduced without worsening.

In the above-mentioned embodiment, the shaft 9 is provided on the arm member 7 side and the fork member 10 side is provided with the hole 10a fitted into the shaft 9. However, instead of this, the fork is used. The object of the present invention can also be achieved by a structure in which a shaft is provided on the member 10 side and a hole is formed on the arm member 7 side.

[Brief description of drawings]

FIG. 1 is a sectional front view showing a main part of an embodiment of the present invention.

FIG. 2 is a plan view seen downward from a plane along the line II-II in FIG.

FIG. 3 is a side view of the same.

[Explanation of symbols]

 1 Control Rod 2 Transmission Case 3 Control Arm 4, 5, 6 Shift Rod 7 Arm Member 9 Shaft Body 10 Fork Member 11A, 11B, 11C Engagement Groove 17 Guide Plate

Claims (3)

[Claims] 1. A control arm for receiving an operating force from a shift lever and transmitting the operating force to a shift rod,
An arm member provided integrally with the shift rod,
A fork member that engages with the sleeve of the synchronizer to move the sleeve in the axial direction, and one end of the arm member for rotatably supporting the fork member around a predetermined axis at one end of the arm member. And a fork member shaft support means provided between the fork member and the fork member. 2. The shift operating device for a transmission according to claim 1, wherein the operating force is transmitted from the control arm to the shift rod via the arm member. 3. A shift operation device for a transmission according to claim 1, wherein a 3-4 speed shift fork comprises the arm member and the fork member.