JP2586295Y2 - Transmission for vehicles - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an improvement in a vehicle transmission.

[0002]

2. Description of the Related Art In a transmission of a vehicle, especially a large bus or truck, an up-down shift train is formed on one side of a select train so as to be orthogonal to the select train, and a reverse train is formed on the other side of the select train. A shift select pattern is formed by forming the shift row in parallel with the up-down shift row, and an operation lever operable to trace the shift select pattern is provided. The operation lever has an intermediate portion pivotally mounted in a socket provided in an outer cylinder fitted in a main shaft arranged in a select direction in the housing. The operation lever is operated to up-down shift and reverse. A shift is performed.

Further, the main shaft is provided with a biasing means for pressing the outer cylinder from the reverse shift row to the up-down shift row. It automatically returns from the shift train to the up-down shift train.

[0004]

However, in the above-mentioned conventional example, when the operation lever is automatically returned, the outer cylinder collides with the housing by the urging means, and an impact sound is generated, which makes the driver uncomfortable. And the quality and luxury are impaired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the invention is to provide a vehicular transmission capable of damping the impact sound generated when the operation lever is operated in a select direction. It is to provide a device.

[0006]

In order to achieve the above-mentioned object, a vehicle transmission according to a first aspect of the present invention has an up-down shift train formed on one side of a select train orthogonal to the select train, Further, a shift select pattern is formed by forming a reverse shift row on the other side of the select row in parallel with the up / down shift row, and a socket provided in an outer cylinder inserted into a main shaft arranged in the select direction in the housing. A vehicle transmission having an intermediate portion of an operation lever pivotally mounted therein and operating the operation lever based on the shift select pattern to perform an up-down shift and a reverse shift. At the time of directional operation, a first cushioning member is disposed at a position where the housing and the outer cylinder are in contact with each other, and further provided below the operation lever. The operating shaft with placing a rubber-like elastic body, is characterized by attaching the second buffer member such that the rubber-like elastic body abuts during select direction operation of the operating lever to the housing.

Further, the vehicle transmission according to claim 2 is characterized in that when the operation lever is operated in the select direction, the first buffer member and the second buffer member are brought into contact with a time lag.

According to a third aspect of the present invention, the first shock absorbing member is first brought into contact with the operation lever when the operation lever is operated in the select direction.

Further, the vehicle transmission according to a fourth aspect of the present invention provides the vehicle transmission according to the first aspect.
It is characterized in that the cross-sectional shape of the cushioning member is formed such that the cross-sectional area gradually increases from the contact side to the non-contact side.

[0010] The vehicle transmission according to claim 5 is characterized in that:
It is characterized in that the buffer member is provided with a deformation restricting means for the first buffer member.

The vehicle transmission according to claim 6 is a vehicle transmission comprising:
An initial contact buffer portion is formed on the side peripheral surface of the buffer member so as to protrude in the axial direction at intervals.

[0012]

According to the vehicle transmission of the first aspect of the present invention, when the operation lever is operated in the select direction, the first operation is performed.
The impact sound produced when the outer cylinder collides with the housing can be buffered by the cooperative action of the buffer member and the second buffer member.

Further, according to the vehicle transmission of the second and third aspects, the impact sound can be buffered in two stages, and the buffer effect can be further improved.

Further, according to the vehicle transmission of the fourth aspect, since the spring characteristics of the first buffer member can be made non-linear, the buffer effect can be further improved.

Further, according to the vehicle transmission of the fifth and sixth aspects, the spring characteristics of the first cushioning member can be variously changed, and the degree of freedom of design can be expanded.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle transmission according to the present invention will be described below with reference to an embodiment shown in the drawings. 1 is a cross-sectional explanatory view of the vehicle transmission, FIG. 2 is a cross-sectional explanatory view taken along the line II-II of FIG.
FIG. 3 is an explanatory sectional view taken along the line III-III in FIG. 2, and FIG.
FIG. 5 is a perspective explanatory view of the first cushioning member, FIG. 6 is a sectional explanatory view of the first cushioning member, FIG. 7 is a frontal explanatory view of the second cushioning member, and FIG. 7 is a sectional view taken along the line VIII-VIII of FIG. 7, FIG. 9 is a perspective view of a position plate, FIG.
0 is a front view of the switch unit, FIG. 11 is a perspective view of a guide plate, and FIG. 12 is a view of a shift select pattern.

In the figure, E denotes a vehicular transmission, in which an up-down shift train 102 is formed on one side of a select train 101 so as to be orthogonal to the select train 101, and a reverse shift train 103 is formed on the other side of the select train 101. A shift select pattern 100 is formed by being formed in parallel with the up-down shift row 102, and the operation lever 20 is provided in a socket 24 provided in an outer cylinder 22 inserted in a main shaft 21 arranged in a select direction in a housing 80. And an up-down shift and a reverse shift by operating the operation lever 20 based on the shift select pattern 100.

This invention is particularly applicable to the operation lever 20.
In the operation in the select direction, the first cushioning member 10 is arranged at a position where the housing 80 and the outer cylinder 22 come into contact with each other.
The rubber-like elastic body 12 is arranged on the operation shaft 27 provided below the operation lever 20, and the second buffer member 11 with which the rubber-like elastic body 12 comes into contact when the operation lever 20 operates in the select direction is attached to the housing 80. It is characterized by being attached to.

In the figures, arrow F indicates the front side of the vehicle, and arrow R indicates the rear side of the vehicle.

Further, the structure of the present invention will be described in detail.

The operation lever 20 is operably attached to a casing 80 having a rectangular cross section with an upper opening so as to trace the shift select pattern 100 via a main shaft 21 and an outer cylinder 22. 80 are arranged in the select direction. A bush 23 made of synthetic resin is press-fitted at both ends of the outer cylinder 22.
Reference numeral 3 is fitted on the main shaft 21. An intermediate portion 20a of the operation lever 20 is a cylindrical socket 24 protruding from the outer cylinder 22.
And is pivotally mounted by a pivot 25. The spherical portion 20 b formed at the lower end of the operation lever 20 is inserted into a support hole 21 a formed to penetrate perpendicularly to the axis of the main shaft 21. Further, a knob 26 is attached to an upper portion of the operation lever 20.

An operation shaft 27 extending downward is integrally fixed to the outer cylinder 22 on the axis of the operation lever 20. A spherical portion 27a formed at the lower end of the operation shaft 27 is
The switch unit 90 is fitted into the bridge member 91.
The switch unit 90 is provided with a select sliding member 92 that slides in the select direction and a shift slide member 93 that slides in the shift direction via the piece member 91. , Magnet switches 94 and 95 are provided respectively. And
The operation in the select direction and the shift direction of the operation lever 20 is detected by the magnet switches 94 and 95, and a select signal and a shift signal for designating the shift speed of the transmission are output.

The shift select pattern 100 is shown in FIG.
As shown in the figure, an up-down shift row 102 is formed on one side of the select row 101 orthogonal to the select row 101, and a reverse shift row 103 is formed on the other side of the select row 101 in parallel with the up-down shift row 102. doing.

An upshift position U and a downshift position D are provided in the up / down shift train 102, and an intersection H between the up / down shift train 102 and the select train 101 is operated by the operation on the up / down shift train 102 side. This is a neutral position of the lever 20, that is, a so-called hold position. A reverse shift position R is provided at a position opposing the upshift position U of the reverse shift train 103,
Intersection point N between reverse shift column 103 and select column 101
Is the operation lever 20 on the reverse shift train 103 side.
Is a neutral position, a so-called neutral position.

The first cushioning member 10 is made of rubber, is formed in a ring shape, and has a main shaft 2 so as to be in contact with the inner wall 80b of the housing 80.
1 is press-fitted. The cross-sectional shape of the first cushioning member 10 is formed such that its cross-sectional area gradually increases from the contact portion 10a to the non-contact portion 10b, and the contact portion 10a is formed as shown in FIG. When the operating lever 20 is at the hold position H, the bush 23 of the outer cylinder 22 is in contact with the bush 23.

The second cushioning member 11 is made of sheet metal and has a substantially inverted cross section.
Returning from the neutral position N to the hold position H, the wall portions 11a and 11b and the neutral position N are brought into contact with the rubber-like elastic body 12 press-fitted into the intermediate portion outer peripheral surface of the operation shaft 27 when the operation lever 20 operates in the shift direction. The wall portion 11c that comes into contact when the select direction is operated is formed. As shown in FIG. 2, when the operation lever 20 is at the hold position H, the wall portion 11c is disposed with a slight gap b from the rubber-like elastic body 12. Further, the second buffer member 11
An opening 11d is formed in the top surface of the shaft to allow the operation shaft 27 to be loosely fitted.

Further, the vehicle transmission E according to the present invention has a neutral position holding mechanism that biases the operating lever 20 so that the operating lever 20 can be held at the neutral position when the operating lever 20 is tilted in the up-down shift direction and the reverse shift direction. Means 30
When the operation lever 20 is tilted in the select direction, the select position holding means 40 biases the operation lever 20 from the reverse shift row to the up / down shift row, and functions from the middle of the stroke of the select position hold means 40. Detent mechanism 50 having reaction force means 52 and holding means 53 for holding operation lever 20 at the reverse shift position
Is provided.

The neutral position holding means 30 includes a support roller 31
, A holding spring 32, and a spring stopper 33, and the support roller 31 is rotatably mounted on the outer cylinder 22 on a support shaft 34 projecting from the front F side orthogonal to the axis of the outer cylinder 22. The holding spring 32 is a torsion coil spring. The base 32a is wound around a spring mounting shaft 35 protruding from the front F-side inner wall 80a of the housing 80. The free end 32 is formed bifurcated and parallel to each other.
b and 32c are pressed against the support roller 31. The spring stopper 33 protrudes from the inner wall 80b of the housing 80, and is provided on the upper surface 33a and the lower surface 33b.
Of the free ends 32b and 32c are pressed against each other.

A guide pin 3 is provided at the tip of the support shaft 34.
The guide pin 36 is set so as to engage with a guide groove 38 formed in a guide plate 37 fixed to the inner wall 80 a of the housing 80. The guide groove 38 corresponds to the select row 1 of the shift select pattern 100.
01, grooves 38a, 38b, 38c are formed to correspond to the up-down shift row 102 and the reverse shift row 103, and the lower end of the groove 38b has an up-shift position U,
The upper end of the groove 38b is set to correspond to the downshift position D, the lower end of the groove 38c corresponds to the reverse shift position R, the intersection of the grooves 38a and 38b corresponds to the hold position H, and the intersection of the grooves 38a and 38c corresponds to the neutral position N. ing.

A compression spring 40 as a select position holding means is wound around the outer cylinder 22 on the inner wall 80c side of the housing 80.

The position plate 51 of the detent mechanism 50 is made of synthetic resin and is fixed to the rear R side inner wall 80d of the housing 80. The position plate 51 has an arc surface 55 centered on the axis of the main shaft 21. And this arc surface 5
An inclined surface 52 as a reaction force means is formed continuously from 5. Check grooves 55a and 55b for upshift and downshift are formed in the arc surface 55, respectively. In addition, the inclined surface 52 is used for the up-down shift train 1
It is formed obliquely with the axis of the main shaft 21 from the 02 side toward the reverse shift row 103, and is inclined upward to the left as shown in FIG. Further, a concave portion 53 is formed on the inclined surface 52 as a holding means into which the ball 54 fits when the operation lever 20 is shifted to the reverse shift position R. The ball 54 of the detent mechanism 50 is housed in a cylinder 56 projecting from the rear R side at right angles to the main shaft 21 at an intermediate portion of the outer cylinder 22. It is set so that it can be pressed against the arc surface 55 and the inclined surface 52 of the position plate 51 by the compression spring 58 via the body 57.

Next, the operation of the embodiment of the present invention will be described.

The operation lever 20 at the hold position H is
It is held at a neutral position by a holding spring 32.
From this state, the operation lever 20 is moved in the upshift direction (arrow A direction) or downshift direction (arrow B direction).
When it is tilted about 1, the holding spring 32 gradually bends, whereby the operating force of the operating lever 20 changes.

The rubber-like elastic body 12 is used as the second cushioning member 1.
1 is in contact with the wall 11a or 11b
The guide pin 36 is moved up or down shift position D or downshift position D in the groove 38b of the guide plate 37 while bending.
Abut.

When the operating lever 20 in the upshift position U or the downshift position D is released, it returns to the hold position H by the spring force of the holding spring 32.

To reverse-shift the operation lever 20 at the hold position H, the bush 23 of the main shaft 22 is attached to the inner wall 80 c of the housing 80 around the pivot 25 against the spring force of the compression spring 40. It is tilted in the direction of arrow C until it contacts. Then, the compression spring 40 first generates an initial operation force on the bending operation lever 20. When the operation lever 20 is further tilted in the same direction, the compression spring 40 is further deflected during operation, and the ball 54 is
2 and makes the compression spring 58 bend. Thereby, the operation force of the operation lever 20 changes.

Further, when the operation lever 20 which has reached the neutral position N is tilted in the reverse shift direction, the holding spring 32 gradually bends, whereby the operation lever 20
Is changed and the operation lever 20 is shifted to the river shift position R, the position plate 51
The ball 54 is fitted into the concave portion 53 of FIG.

In this state, the operating lever 20 is tilted in the anti-reverse shift direction to release the ball 54 from the concave portion 53 of the position plate 51. After releasing the hand, the operating lever 20 is held by the spring force of the compression spring 40. Return to position H.

At this time, the bush 23 of the outer cylinder 22 comes into contact with the contact portion 10a of the first cushioning member 10, and immediately thereafter, the rubber-like elastic body 12 comes into contact with the wall portion 11c of the second cushioning member 11. Thereby, when the operation lever 20 returns from the neutral position N to the hold position H by the spring force of the compression spring 40, the impact sound of the bush 23 of the outer cylinder 22 abutting on the inner wall 80b of the housing 80 is buffered in two stages. Can be done.

The first cushioning member 10 is formed such that its cross section gradually increases from the contact portion 10a to the non-contact portion 10b, so that the spring characteristic can be made non-linear. it can. This gives you more flexibility at the beginning of a collision,
The latter half of the collision can be hardened, and the buffering effect of the impact sound can be further improved.

FIGS. 13 to 18 show various modifications of the first cushioning member 10. FIG. 13 shows a first modification of the first cushioning member 10. The aggregate 13 shown in FIGS. Inserted. Thereby, the strength of the first buffer member 10 can be reinforced.

FIG. 14 shows a second modified example of the first cushioning member 10. The non-contact portion 1 is provided on the outer periphery of the aggregate 13 shown in FIG.
Folded portion 1 as deformation restricting means that comes into contact with the outer periphery on the 0b side
3a are formed.

Thus, the deformation of the first cushioning member 10 can be restricted, and the spring characteristics of the first cushioning member 10 can be changed by changing the length of the bent portion 13a in various ways. Degree of freedom can be expanded.

FIGS. 15 and 16 show a third modification of the first cushioning member 10. The contact portions 10c and 10d are formed on both side surfaces, and the ring-shaped aggregate 13 is provided on the non-contact portion 10b. Is inserted.

FIGS. 17 and 18 show a fourth modification of the first cushioning member 10, in which convex portions 10e as initial contact cushioning portions are provided on both peripheral surfaces at intervals. This convex part 1
By varying the number and height of 0e, the spring characteristics of the first cushioning member 10 can be changed and the degree of freedom in design can be increased.

[0046]

As described above, according to the vehicle transmission of the first aspect of the present invention, when the operation lever is operated in the select direction, the outer cylinder is formed by the cooperation of the first buffer member and the second buffer member. The impact sound generated when the vehicle collides with the housing can be buffered. As a result, discomfort of the driver can be eliminated, and quality and luxury can be improved.

According to the vehicle transmission of the second and third aspects, the impact sound can be buffered in two stages, and the buffer effect can be further improved.

According to the vehicle transmission of the fourth aspect, since the spring characteristics of the first buffer member can be made non-engaged, the buffer effect can be further improved.

Furthermore, according to the vehicle transmission of the fifth and sixth aspects, the spring characteristics of the first cushioning member can be variously changed, and the degree of freedom in design can be expanded.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of a vehicle transmission according to the present invention.

FIG. 2 is an explanatory sectional view taken along the line II-II of FIG. 1;

FIG. 3 is an explanatory sectional view taken along line III-III in FIG. 2;

FIG. 4 is an explanatory sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is an explanatory perspective view of a first cushioning member.

FIG. 6 is an explanatory sectional view of a first cushioning member.

FIG. 7 is an explanatory front view of a second cushioning member.

FIG. 8 is an explanatory sectional view taken along the line VIII-VIII in FIG. 7;

FIG. 9 is an explanatory perspective view of a position plate.

FIG. 10 is an explanatory plan view of the switch unit.

FIG. 11 is an explanatory perspective view of a guide plate.

FIG. 12 is an explanatory diagram of a shift select pattern.

FIG. 13 is an explanatory sectional view showing a first modified example of the first cushioning member.

FIG. 14 is an explanatory sectional view showing a second modification of the first cushioning member.

FIG. 15 is an explanatory front view illustrating a third modified example of the first cushioning member.

FIG. 16 is an explanatory sectional view taken along the line XVI-XVI in FIG. 15;

FIG. 17 is an explanatory front view illustrating a fourth modification of the first cushioning member.

FIG. 18 is an explanatory sectional view taken along the arrow XVIII-XVIII in FIG. 17;

[Explanation of symbols]

 E Vehicle transmission U Upshift position D Downshift position R Reverse shift position H Hold position N Neutral position 10 First buffering member 10a Contact portion 10b Non-contact portion 10c Contact portion 10d Contact portion 10e Initial contact buffer Part (convex part) 11 Second buffer member 11a Wall part 11b Wall part 11c Wall part 12 Rubber-like elastic body 13 Aggregate material 13a Deformation restricting means (bending part) 20 Operation lever 21 Main shaft 22 Outer cylinder 24 Socket 25 Axis 27 Operation Shaft 30 Neutral position holding means 31 Support roller 32 Holding spring 36 Guide pin 37 Guide plate 38 Guide groove 40 Select position holding means (compression spring) 50 Detent mechanism 51 Position plate 52 Reaction force means (inclined surface) 53 Holding means (recess) 54 ball 55 arc surface 56 cylinder 80 case 0 switch unit 100 shift select pattern 101 select row 102-shifting columns 103 reverse shift sequence

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16H 59/00-61/12 F16H 61/16-61/36 F16H 63/00-63/48 B60K 20/02

Claims (6)

(57) [Scope of request for utility model registration] An up-down shift row is formed on one side of a select row so as to be orthogonal to the select row, and a reverse shift row is formed on the other side of the select row in parallel with the up-down shift row. A select pattern is formed, and an intermediate portion of an operation lever is pivotally mounted in a socket provided in an outer cylinder inserted in a main shaft arranged in a select direction in a housing, and the operation lever is operated based on the shift select pattern. A transmission for performing an up-down shift and a reverse shift, wherein a first buffer member is disposed at a position where the housing and the outer cylinder come into contact with each other when the operation lever is operated in a select direction. Further, a rubber-like elastic body is disposed on an operation shaft provided below the operation lever, and the rubber-like elastic body is used to select the operation lever. A transmission for a vehicle, wherein a second buffer member is attached to the housing so as to be in contact with the vehicle when the vehicle is operated in the direction G. 2. The vehicular transmission according to claim 1, wherein when the operation lever is operated in the select direction, the first buffer member and the second buffer member come into contact with a time lag. 3. The vehicular transmission according to claim 1, wherein the first buffer member comes into contact first when the operation lever is operated in the select direction. 4. The vehicular transmission according to claim 1, wherein the cross-sectional shape of the first cushioning member is formed such that the cross-sectional area increases gradually from the contact side to the non-contact side. 5. The vehicle transmission according to claim 1, wherein the first buffer member is provided with a deformation restricting means for the first buffer member. 6. The vehicular transmission according to claim 1, wherein an initial contact buffer portion is formed on the side peripheral surface of the first buffer member so as to protrude in the axial direction at an interval.