JPH0722168U - Transmission for vehicle - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a transmission for a vehicle capable of buffering an impact sound generated when an operating lever operates in a select direction. In a vehicle transmission E according to the present invention, the first cushioning member 10 is arranged at a portion where the housing 80 and the outer cylinder 22 contact each other when the operation lever 20 is operated in the select direction,
Further, the operation shaft 27 provided below the operation lever 20.
The rubber-like elastic body 12 is disposed on the housing 80, and the second cushioning member 11 with which the rubber-like elastic body 12 abuts when the operation lever 20 is operated in the select direction is attached to the housing 80.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a transmission for a vehicle.

[0002]

[Prior art]

 In transmissions for vehicles, especially large buses and trucks, an up-down shift train is formed on one side of the select train so as to be orthogonal to the select train, and a reverse shift train is up-down on the other side of the select train. A shift select pattern is formed by forming the shift select pattern in parallel with the shift train, 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 into a main shaft arranged in the select direction in the housing, and the operation lever is operated to perform up / down shift and It is designed to perform a reverse shift.

Further, the main shaft is provided with an urging means for pressing the outer cylinder from the reverse shift row side toward the up-down shift row side, and by this urging means, when the operating lever operates in the select direction. , It automatically returns from the reverse shift train side to the up-down shift train side.

[0004]

[Problems to be solved by the device]

 However, in the conventional example as described above, when the operating lever is automatically returned, the outer cylinder collides with the casing by the urging means to generate an impact striking sound, which causes the driver to feel uncomfortable, and the quality and high-class feeling. There is a problem of damaging.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object thereof is to provide a vehicle shock absorber capable of buffering an impact hitting sound generated when the operating lever is operated in the select direction. It is to provide a transmission.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, the vehicle transmission of claim 1 according to the present invention is such that an up-down shift train is formed on one side of the select train so as to be orthogonal to the select train, and further on the other side of the select train. A shift select pattern is formed by forming the shift train in parallel with the up / down shift train, and the middle of the operation lever is placed in the socket provided in the outer cylinder fitted to the main shaft arranged in the select direction in the housing. A vehicle transmission in which a portion is pivotally mounted and an operating lever is operated based on the shift select pattern to perform an up-down shift and a reverse shift. A first cushioning member is arranged at a position where the casing and the outer cylinder come into contact with each other, and a rubber-like elastic body is further provided on an operation shaft provided below the operation lever. With placing, and that the rubber-like elastic body is attached a second cushioning member to abut upon-select direction operation of the operating lever to the housing and feature.

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

Further, the vehicular transmission according to claim 3 is characterized in that the first shock absorbing member is first brought into contact with the operating lever when the operating lever is operated in the selecting direction.

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

The vehicle transmission according to a fifth aspect is characterized in that the first cushioning member is provided with a deformation restricting means for the first cushioning member.

The vehicle transmission according to a sixth aspect of the invention is characterized in that an initial contact cushioning portion that protrudes in the axial direction is formed on the side circumferential surface of the first cushioning member at a distance.

[0012]

[Action]

 According to the vehicle transmission of claim 1 of the present invention, when the outer cylinder collides with the housing due to the cooperative action of the first cushioning member and the second cushioning member at the time of operating the operation lever in the select direction. It is possible to buffer the impact striking sound generated at.

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

Further, according to the vehicle transmission of the fourth aspect, since the spring characteristic of the first buffer member can be made non-linear, 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 buffer member can be variously changed, and the degree of freedom in design can be expanded.

[0016]

【Example】

 Hereinafter, a vehicle transmission according to the present invention will be described based on an embodiment shown in the drawings. 1 is a cross-sectional view of a vehicle transmission, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2, and FIG. IV cross-sectional explanatory view, FIG. 5 is a perspective explanatory view of the first cushioning member, FIG. 6 is a cross-sectional explanatory view of the first cushioning member, FIG. 7 is a front view explanatory diagram of the second cushioning member, and FIG. VIII-VIII sectional view taken along the arrow, FIG. 9 is a perspective view of the position plate, FIG. 10 is a front view of the switch unit, FIG. 11 is a perspective view of the guide plate, and FIG. 12 is a shift select pattern. It is a figure.

In the figure, E is a vehicle transmission, in which an up-down shift train 102 is formed on one side of the select train 101 so as to be orthogonal to the select train 101, and a reverse shift train 103 is mounted on the other side of the select train 101. The shift select pattern 100 is formed by forming the shift select pattern 100 in parallel with the downshift row 102, and the operation lever 20 is provided in the socket 24 provided in the outer cylinder 22 fitted into the main shaft 21 arranged in the housing 80 in the select direction. The intermediate portion of the above is pivotally mounted and the operation lever 20 is operated based on the shift select pattern 100 to perform up-down shift and reverse shift.

Further, according to the present invention, particularly when the operation lever 20 is operated in the select direction, the first cushioning member 10 is arranged at a portion where the casing 80 and the outer cylinder 22 come into contact with each other, and further below the operation lever 20. The rubber-like elastic body 12 is arranged on the provided operation shaft 27, and the second cushioning 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. Is characterized by.

In the figure, 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 upward opening so as to trace the shift select pattern 100 via a spindle 21 and an outer cylinder 22, and the spindle 21 is a casing. It is arranged on the body 80 in the select direction. Bushings 23 made of synthetic resin are press-fitted into both ends of the outer cylinder 22. The bushes 23 are fitted into the main shaft 21. The intermediate portion 20a of the operating lever 20 is housed in a cylindrical socket 24 projecting from the outer cylinder 22, and is pivotally attached by a pivot 25. Further, the spherical portion 20b formed at the lower end portion of the operating lever 20 is fitted and inserted into a support hole 21a which is formed so as to penetrate perpendicularly to the axis of the main shaft 21. Further, a knob 26 is attached to the upper part of the operating lever 20.

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

As shown in FIG. 12, the shift select pattern 100 is formed by forming an up-down shift train 102 on one side of the select train 101 so as to be orthogonal to the select train 101, and further, on the other side of the select train 101, a reverse shift train. 103 is formed in parallel with the up-down shift row 102.

An upshift position U and a downshift position D are arranged in the up-down shift train 102, and an intersection H between the up-down shift train 102 and the select train 101 is located on the up-down shift train 102 side. Is the neutral position of the operation lever 20, which is the so-called hold position. Further, a reverse shift position R is arranged at a position opposed to the upshift position U of the reverse shift train 103, and the intersection N between the reverse shift train 103 and the select train 101 is the operation shift on the reverse shift train 103 side. It is a neutral position of the bar 20, a so-called neutral position.

The first cushioning member 10 is made of rubber, is formed in a ring shape, and is press-fitted into the main shaft 21 so as to contact the inner wall 80 b of the housing 80. The cross-sectional shape of the first cushioning member 10 is formed so that the cross-sectional area thereof gradually increases from the contact portion 10a toward the non-contact portion 10b, and the contact portion 10a is formed as shown in FIG. In addition, when the operating lever 20 is in the hold position H, it is arranged so as to contact the bush 23 of the outer cylinder 22.

The second cushioning member 11 is made of sheet metal, has a substantially U-shaped cross section, and is inserted into the rubber-like elastic body 12 press-fitted into the outer peripheral surface of the intermediate portion of the operating shaft 27 when the operating lever 20 operates in the shift direction. There are formed wall portions 11a and 11b that come into contact with each other and a wall portion 11c that comes into contact with each other when the neutral direction N returns to the hold position H when the select direction is activated. Further, as shown in FIG. 2, when the operation lever 20 is in the hold position H, the wall portion 11c is arranged with a slight gap b with the rubber elastic body 12. Further, a burr hole 11d is formed on the top surface of the second cushioning member 11 so that the operating shaft 27 is loosely fitted therein.

Further, in the vehicle transmission E according to the present invention, when the operation lever 20 is tilted in the up / down shift direction and the reverse shift direction, the operation lever 20 is biased so as to be held in the neutral position. The means 30, the select position holding means 40 for urging the operation lever 20 from the reverse shift row side to the up-down shift row side when the operation lever 20 is tilted in the select direction, and the stroke of the select position holding means 40. A detent mechanism 50 having a reaction force means 52 that functions from the middle of the operation and a holding means 53 that holds the operation lever 20 in the reverse shift position is provided.

The neutral position holding means 30 is provided with a support roller 31, a holding spring 32, and a spring stopper 33. The support roller 31 is provided on the outer cylinder 22 so as to project to the front F side orthogonal to the axis thereof. It is rotatably attached to the support shaft 34. The holding spring 32 is a torsion coil spring, and the base 32a is wound around a spring mounting shaft 35 projecting from the inner wall 80a of the front F side of the housing 80. The portions 32b and 32c are pressed against the support roller 31. The sprinkling stopper 33 is projectingly provided on the inner wall 80b of the housing 80, and the free ends 32b and 32c of the holding spring 32 are in pressure contact with the upper surface 33a and the lower surface 33b.

A guide pin 36 is formed at the tip of the support shaft 34, and the guide pin 36 engages with a guide groove 38 formed in a guide plate 37 fixed to the inner wall 80 a of the housing 80. Is set. The guide groove 38 is formed with grooves 38a, 38b, 38c corresponding to the select row 101, the up / down shift row 102, and the reverse shift row 103 of the shift select pattern 100, and the lower end of the groove 38b is at the upshift position. U, the upper end of the groove 38b corresponds 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 1, and the intersection of the grooves 38a and 38c corresponds to the neutral position N, respectively. Is set.

The 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 inner wall 80 d of the housing 80 on the rear R side. The position plate 51 has an arc centered on the axis of the main shaft 21. A surface 55 and an inclined surface 52 as a reaction force means are formed continuously with the arc surface 55. Check grooves 55a and 55b for upshifting and downshifting are formed on the circular arc surface 55, respectively. The inclined surface 52 is formed obliquely intersecting the axis of the main shaft 21 from the up-down shift train 102 side toward the reverse shift train 103, and is inclined to the upper left as shown in FIG. Further, the inclined surface 52 is provided with a recess 53 as a holding means into which the ball 54 is fitted when the operating lever 20 is shifted to the reverse shift position R. Further, the balls 54 of the detent mechanism 50 are housed in a cylindrical body 56 that is provided in the middle portion of the outer cylinder 22 so as to project orthogonally to the main shaft 21 and to the rear R side, and the balls 54 incorporated in the cylindrical body 56. It is set so that it can be pressed against the circular arc surface 55 and the inclined surface 52 of the position plate 51 by the compression spring 58 via the pulling receiver 57.

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

The operating lever 20 in the hold position H is held in the neutral position by the holding spring 32. When the operating lever 20 is tilted from this state in the upshift direction (direction of arrow A) or the downshift direction (direction of arrow B) about the main shaft 21, the holding spring 32 is gradually bent, whereby the operation lever 20 is operated. Power changes.

Further, the rubber-like elastic body 12 is brought into contact with the wall portion 11 a or 11 b of the second cushioning member 11, and the guide pin 36 is deflected while the rubber-like elastic body 12 is being bent so that the guide pin 36 moves up the shift position of the groove 38 b of the guide plate 37. Abut on U or downshift position D.

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

In order to reverse-shift the operating lever 20 in the hold position H, the bushing 23 of the main shaft 22 is rotated about the pivot 25 against the operation lever 20 against the spring force of the compression spring 40 and the inner wall 80c of the housing 80 is rotated. Tilt it in the direction of arrow C until it touches. Then, first, the compression spring 40 causes the bending operation lever 20 to generate an initial operation force. When the operation lever 20 is further tilted in the same direction, the compression spring 40 is further bent during operation, and the ball 54 contacts the inclined surface 52 of the position plate 51 to bend the compression spring 58. As a result, the operating force of the operating 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 is gradually bent, whereby the operation force of the operation lever 20 is changed and the operation lever 20 is subjected to the river shift. When shifted to the position R, the ball 54 fits into the recess 53 of the position plate 51 and is held at the reverse shift position R.

From this state, the operation lever 20 is tilted in the reverse reverse shift direction to separate the ball 54 from the recess 53 of the position plate 51, and then the hand is released, so that the spring force of the compression spring 40 causes the operation lever 20 to move. Return to the hold position H.

At this time, the bush 23 of the outer cylinder 22 comes into contact with the contact portion 10 a of the first cushioning member 10, and immediately thereafter, the rubber-like elastic body 12 comes into contact with the wall portion 11 c of the second cushioning member 11. As a result, when the operating lever 20 is returned from the neutral position N to the hold position H by the spring force of the compression spring 40, the bush 23 of the outer cylinder 22 makes a two-step impact striking sound that abuts against the inner wall 80b of the housing 80. Can be buffered with.

Further, the first cushioning member 10 is formed such that the cross-sectional shape thereof gradually increases from the contact portion 10a toward the non-contact portion 10b, so that the spring characteristic is made non-linear. You can As a result, the initial stage of the collision can be made flexible and the latter half of the collision can be made stiff, and the shock-damping sound buffering effect can be further improved.

13 to 18 show various modified examples of the first cushioning member 10, FIG. 13 shows a first modified example of the first cushioning member 10, and the aggregate 13 is shown in FIG. 5 and FIG. It has been inserted. Thereby, the strength of the first cushioning member 10 can be reinforced.

FIG. 14 shows a second modified example of the first cushioning member 10, and a bent portion 13a as a deformation restricting means that comes into contact with the outer periphery of the aggregate 13 shown in FIG. 13 on the non-contact portion 10b side. Are formed.

As a result, the deformation of the first cushioning member 10 can be regulated, and the spring characteristics of the first cushioning member 10 can be changed by changing the length of the bent portion 13a. The degree of freedom of can be expanded.

FIGS. 15 and 16 show a third modification of the first cushioning member 10, in which contact portions 10c and 10d are formed on both side surfaces, and the ring-shaped aggregate 13 is provided at the non-contact portion 10b. Has been 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 side circumferential surfaces at intervals. By changing the number and height of the convex portions 10e, it is possible to change the spring characteristic of the first buffer member 10 and increase the degree of freedom in design.

[0046]

[Effect of device]

 As described above, according to the vehicular transmission of claim 1 of the present invention, the outer cylinder collides with the housing due to the cooperative action of the first shock absorbing member and the second shock absorbing member when the operation lever is operated in the select direction. It is possible to buffer the impact tapping sound that is generated when performing. As a result, the driver's discomfort can be eliminated, and the quality and luxury can be improved.

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

According to the vehicle transmission of the fourth aspect, the spring characteristic of the first cushioning member can be made non-engagement type, so that the cushioning effect can be further improved.

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

[Brief description of drawings]

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

2 is a cross-sectional view taken along the line II-II of FIG.

3 is a cross-sectional view taken along the line III-III of FIG.

4 is a cross-sectional view taken along the line IV-IV of FIG.

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

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

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

FIG. 8 is a cross sectional view taken along the line VIII-VIII of FIG.

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

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

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

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

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

FIG. 14 is a cross-sectional explanatory view showing a second modified example of the first cushioning member.

FIG. 15 is a front view explanatory diagram showing a third modification of the first cushioning member.

16 is a cross sectional view taken along the line XVI-XVI of FIG.

FIG. 17 is an explanatory front view showing a fourth modified example of the first cushioning member.

18 is a cross-sectional view taken along the line XVIII-XVIII of FIG.

[Explanation of symbols]

 E Vehicle transmission device U Upshift position D Downshift position R Reverse shift position H Hold position N Neutral position 10 First cushioning member 10a Contact portion 10b Non-contact portion 10c Contact portion 10d Contact portion 10e Initial contact cushion Part (convex part) 11 Second cushioning member 11a Wall part 11b Wall part 11c Wall part 12 Rubber-like elastic body 13 Aggregate 13a Deformation restricting means (folding part) 20 Operating 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 (recessed portion) 54 Ball 55 Arc Surface 56 Cylindrical Body 80 Housing 0 switch unit 100 shift select pattern 101 select row 102-shifting columns 103 reverse shift sequence

Claims (6)

[Scope of utility model registration request] 1. A shift is formed by forming an up-down shift train on one side of a select train so as to be orthogonal to the select train and further forming a reverse shift train on the other side of the select train in parallel with the up-down shift train. The select pattern is formed, and the middle part of the operation lever is pivotally mounted in the socket provided in the outer cylinder fitted in the main shaft arranged in the select direction in the housing, and this operation lever is operated based on the shift select pattern. A vehicle transmission in which an up-down shift and a reverse shift are performed, wherein a first cushioning member is arranged at a portion where the casing and the outer cylinder come into contact with each other when the operation lever operates in the select direction. Further, a rubber-like elastic body is arranged on an operation shaft provided below the operation lever, and the rubber-like elastic body is used for selecting the operation lever. A second transmission member is attached to the casing so that the second cushion member is brought into contact with the transmission when it is operated in the forward direction. 2. The transmission according to claim 1, wherein the first shock absorbing member and the second shock absorbing member are brought into contact with each other with a time lag when the operation lever is operated in the select direction. 3. The vehicle transmission according to claim 1, wherein the first shock absorbing member is first contacted when the operating lever is operated in the select direction. 4. The transmission for a vehicle according to claim 1, wherein a cross-sectional shape of the first buffer member is formed so that its cross-sectional area gradually increases from the contact side toward the non-contact side. 5. The transmission according to claim 1, wherein the first cushioning member is provided with a deformation restricting means for the first cushioning member. 6. The transmission for a vehicle according to claim 1, wherein an initial contact cushioning portion that projects in the axial direction is formed on the side peripheral surface of the first cushioning member at a distance.