JPH10288258A - Select load generating device for hand-operated transmission - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent wrong operation from generating without deteriorating operability for a backward step by providing first and second elastic mechanisms generating resisting force against operation of an inner lever to select the shift step position, and an operation load increasing mechanism. SOLUTION: Movement of a lever shaft 2 to the backward moving step select position is performed by movement from the neutral position to the right direction. In the case, when the lever shaft 2 is moved up to the 1-2 speed select position while compressing a 1-2 speed select spring 35, a spring receiver 34 contacted with an interlock plate 13 is brought in contact with a sprng receiver 32, and moved in the axial direction while compressing a spring 33. Simultaneously, a lock ball 43 is contacted with the projecting part of an inner lever 9, and resisting force is overlappedly applied. When the ball 43 exceeds the apex of the projecting part 40, in addition to a fall of the resisting load, the ball 43 assists movement to the backward moving step select position by elastic force of a spring 47, and hence the lever shaft can be moved by small operating force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift operating device for a manual transmission, and more particularly to a load generating device that enables a shift operation to a reverse gear to be reliably felt by increasing an operating load.

[0002]

2. Description of the Related Art As is well known, in a manual transmission for a vehicle, a plurality of so-called vertical guide grooves are orthogonal to a so-called laterally extending guide groove, and a shift lever is moved along these guide grooves. By moving the gear, a gear set at the end of the vertical guide groove is selected. That is, the operation of the shift lever is transmitted to the transmission by a cable or a link, and the synchronization device or the gear is moved to achieve a predetermined gear.

The operation of the shift lever along the so-called lateral guide groove is referred to as a select operation. In the shift mechanism, the operation is such that the inner lever moves to a position where it is engaged with one of the shift fork heads. is there.
On the other hand, the operation of the shift lever along the so-called vertical guide groove is called a shift operation, and in the shift mechanism, the inner lever presses the shift fork head to operate the synchronization device via the shift fork. , To achieve a predetermined gear position.

Therefore, when performing a shift operation by the above-mentioned shift lever, the shift lever is moved to a predetermined select position and the shift operation is performed from this position to a target shift position. Since it is not possible to visually confirm the select position every time the operation is performed, it is usual to estimate the select position based on the operation feeling of the shift lever, and then perform a shift operation to a target shift position position therefrom. Therefore, in order to prevent shifting to the reverse gear during forward traveling, the operating load of the shift lever with respect to the reverse gear select position is increased,
In this manner, a configuration has been conventionally performed in which a select operation to the reverse gear can be experienced by increasing the load.

[0005] One example is described in Japanese Utility Model Laid-Open No. 61-93665. In the device described in this publication, a spring for returning an inner lever attached to a shift and select lever shaft to a predetermined position such as a neutral position is disposed between the inner lever and the inner surface of the case. In addition, the protrusion protruding in the radial direction of the shift and select lever shaft,
It is provided so as to move integrally with the shift and select lever shaft. Further, a restrict pin which is elastically urged and comes into contact with the projection is provided during the stroke when the projection moves together with the shift and select lever shaft toward the reverse gear position.

Therefore, in the device described in this publication, when the select operation is performed to the reverse gear position, first, the spring for the return operation is compressed, so that a reaction force proportional to the stroke is generated, and this becomes an operation load. Then, when the protrusion contacts the restrict pin, the elastic body pressing the restrict pin is compressed, so that the reaction force according to the shape of the protrusion and the elastic force of the elastic body is newly generated. Join. That is, the load at the time of the select operation to the reverse gear is an elastic force that increases in proportion to the stroke,
A load generated by the restrict pin and the projection is added, and the increase in the latter load allows the user to experience a select operation to the reverse gear.

[0007]

In the above-described conventional apparatus, the select load on the reverse gear is increased discontinuously by the projections and the restrict pins. Since it is normal to set a predetermined forward gear position such as a first-gear / second-gear select position, the elastic force of the return spring is reduced to reduce the select load to the forward gear position. In such a case, for example, it is necessary to increase the elastic force of the elastic body that presses the restrict pin, and as a result, there is a disadvantage that the restrict pin and the elastic body that presses the restrict pin increase in size. Conversely, if the restrictor pin and the elastic body that presses it are made smaller, it is necessary to increase the elastic force of the return spring, which increases the select operation load as a whole and increases operability. There are disadvantages that are impaired.

Further, in the above-mentioned conventional apparatus, since the restrict pin is kept pressed during the selection operation to the reverse gear, the entire range from the position immediately before the reverse gear position to the complete setting of the reverse gear position is set. However, even if the select load to the reverse gear can be felt by increasing the load, the operability is likely to deteriorate.

The present invention has been made in view of the above circumstances, and an object of the present invention is to increase the select load for preventing an erroneous operation to the reverse gear without deteriorating the operability to the reverse gear. It is an object of the present invention to provide a device capable of performing the above.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has an inner lever for performing a select operation for selecting a shift position and a shift operation for achieving a shift position. The selection of the manual transmission in which the selecting operation direction to the reverse gear position is the same as the selecting operation direction to the predetermined forward gear position and the reverse gear position is set to a position beyond the predetermined forward gear position. In the load generating device, a first elastic mechanism that generates a reaction force with respect to a selection operation of the inner lever to the predetermined forward position, and a position in which the inner lever moves beyond the predetermined forward position to a reverse position. A second elastic mechanism that generates a reaction force greater than the reaction force with respect to the selection operation of the inner lever when the selection operation is performed, and wherein the inner lever is in the predetermined forward position. An operation load increasing mechanism that generates a resistance to the select operation by pressing the inner lever or a member that operates integrally therewith in a direction perpendicular to the operation direction when performing the select operation to the reverse gear position beyond It is characterized by having.

Therefore, in the apparatus of the present invention, when the inner lever is operated to select the reverse gear position, first,
After the first elastic mechanism generates a reaction force and exceeds a predetermined forward position, the second elastic mechanism and the operation load increasing mechanism generate a reaction force. Therefore, even if the reaction force of the first elastic mechanism is reduced, the operation load at the time of reaching the reverse gear position can be sufficiently ensured, so that the operation load at the time of performing the select operation to the predetermined forward gear position is reduced and the operation load is reduced. Properties can be improved. Further, when performing the select operation to the reverse gear position beyond the predetermined forward gear position, the second elastic mechanism and the operation load increasing mechanism act instead of the first elastic mechanism, so that the select operation force becomes discontinuous. Therefore, the selection operation to the reverse gear can be surely sensed by increasing the operation load. Further, the reaction force of the second elastic mechanism is
Can be set regardless of the elastic mechanism of
By increasing the reaction force of the second elastic mechanism to some extent, it is possible to reduce the size of the operation load increasing mechanism while ensuring a sufficient select load.

[0012]

Next, the present invention will be described more specifically. First, a shift mechanism will be described with reference to FIGS. 1 and 2. A shift and select lever shaft (hereinafter simply referred to as a lever shaft) 2 is provided at a predetermined position of a transmission case (hereinafter simply referred to as a case) 1. It is arranged to be able to move and rotate in the axial direction. That is, one end of the lever shaft 2 is supported by a bearing 3 provided in the case 1, and the lever shaft 2 penetrates a cap 4 attached to an opening of the case 1, and the bearing 5
Supported by The gap between the cap 4 and the lever shaft 2 is sealed by a sealing material 6 so as to maintain a liquid-tight state, and a rubber boot 7 is attached between them.

A lever 8 is attached to an end of the lever shaft 2 protruding from the case 1, and a cable (not shown) is connected to each of the lever 8 and the end of the lever shaft 2. The operating force of a shift lever (not shown) is transmitted by the cable, so that the lever shaft 2 performs a select operation (a left-right movement in FIGS. 1 and 2) and a shift operation (a rotation about a central axis). Is configured.

An inner lever 9 for a forward gear is attached to a central portion of the lever shaft 2 in the axial direction.
The forward lever inner lever 9 includes a cylindrical portion 10 fitted and fixed to the lever shaft 2 and a lever portion 11 projecting radially from the cylindrical portion 10. And is fixed in the axial direction by a pin 12 penetrating in the radial direction. An interlock plate 13 is arranged so as to surround the inner lever 9 for the forward stage. The interlock plate 13 is a rectangular frame-shaped member, and is cut open at a position corresponding to the lever portion 11. The left and right portions sandwiching the lever portion 11 have substantially the same width as the lever portion 11. Is formed. The shape of the lever 11 will be described later.

An inner lever 14 for the reverse gear is mounted on the left side in FIGS. 1 and 2 with respect to the interlock plate 13 described above. This reverse gear 1
Reference numeral 4 denotes an integrated structure of an annular portion 15 fitted and fixed to the lever shaft 2 and a lever portion 16 projecting radially from the annular portion 15. It has the same shape as the lever portion 11. Therefore, the above-mentioned inner levers 9, 14
Is configured to move in the axial direction together with the lever shaft 2 and to rotate with the lever shaft 2.

The shift mechanism shown in FIGS. 1 and 2 is used in a manual transmission capable of setting six forward speeds and a reverse speed.
It is configured to perform a selection operation at four select positions in the axial direction including a speed select position, a third speed-fourth speed select position (neutral position), a fifth speed-sixth speed select position, and a reverse speed select position. 1 and 2, the rightmost position is the reverse gear select position, and the 1st-speed to 2nd-speed select position and the 3rd-speed to 4th-speed select position (neutral position) in this order from left to right. ), And the 5th-6th speed select position.

A first speed / second speed shift fork head 18 is disposed at the first speed / second speed select position of these select positions, that is, at a position corresponding to the lever portion 11 at the first speed / second speed select position. Have been. As shown in FIG. 3, the first speed-second speed shift fork head 18
The first and second speed fork shafts 19 each comprise a pair of projections 20 projecting outward in a radial direction at predetermined locations, and the lever 11 is provided between opposing surfaces of the projections 20.
Is configured to enter. Note that this 1st gear-2
A shift fork (not shown) is integrated with the speed fork shaft 19.

The shape of the tip of the lever 11 is shown in FIG.
And a circular shape having a diameter at the opposing surface of the projection 20 or a shape having a convex curved surface at a portion in contact with the opposing surface of the projection 20. That is, when the lever portion 11 rotates together with the lever shaft 2, the distal end portion of the lever portion 11 is configured to press the protrusion 20 in the left-right direction in FIG. 3 while sliding on the opposing surface of the protrusion 20. . A notch 22 with an inclined surface 21 that rises to the right in FIG. 3 is formed at the tip of the lever 11 (the lower end in FIG. 3).

The position adjacent to the above-described first-speed / second-speed select position (the position adjacent to the right side in FIGS. 1 and 2)
A temporary engagement mechanism 23 is provided at a position corresponding to the lever portion 11 that has been moved to this position at the reverse gear select position. The temporary engagement mechanism 23 includes a pin 24 projecting upward from the first speed-second speed fork shaft 19 in the figure.
And a spring 25 that pushes the pin 24 upward with an elastic force. The tip of the pin 24 is formed in a shape to enter the notch 22 of the lever portion 11 described above.

That is, the temporary engagement mechanism 23 includes a pin 24
Penetrates into the notch portion 22 of the lever portion 11,
The inner gear 9 for forward gear is engaged with the first-speed / second-speed fork shaft 19, and the inner lever 9 for forward gear is moved as shown in FIG.
Is rotated counterclockwise to transmit this turning power to the first-second speed fork shaft 19 via the pin 24, and when the operating force exceeds a predetermined value, the inclined surface 21 pushes down the pin 24 against the elastic force of the spring 25 to the lower side in the figure, and as a result, the inner lever 9 for the forward gear and the first-second speed fork shaft 19
Is configured to be disengaged.

The above-described first-speed / second-speed shift fork head 1
8, a third-speed / fourth-speed shift fork head 26 and a fifth-speed / sixth-speed shift fork head 27 are sequentially arranged in the axial direction of the lever shaft 2. That is, 3rd speed-4
A third-speed / fourth-speed shift fork head 26 is disposed at a position corresponding to the lever portion 11 at the speed select position, and a fifth-speed / sixth-speed shift fork head is disposed at a position corresponding to the lever portion 11 at the fifth-speed / sixth-select position. A shift fork head 27 is provided. And these shift fork heads 2
6, 27 have the same configuration as the above-described first-speed / second-speed shift fork head 18, and the third-speed / fourth-speed shift fork head 26 is integrated with the third-speed / four-speed fork shaft 28; 5 speed-6 speed shift fork head 2
7 is integrated with a 5-speed-6-speed fork shaft 29.

Further, at a position corresponding to the lever portion 16 of the inner gear 14 for the reverse gear at the reverse gear select position,
A reverse shift fork head 30 is arranged.
The reverse shift fork head 30 also has the same shape as the above-described shift fork heads 18, 26, 27, and is integrated with the reverse shift fork 31.

The above-described interlock plate 1
Reference numeral 3 denotes a state in which one of the lever portions 11 and 16 is engaged with one of the shift fork heads 18, 26, 27 and 30, and the other shift fork heads 18, 26 and 2
7, 30 and the other shift fork head 1
It is configured to restrict the movement of 8, 26, 27, 30 in the shift direction. That is, the interlock plate 13 is a double meshing prevention member.

The above-described lever shaft 2 is configured to be held in a neutral position, and for this purpose, a spring is arranged as described below.
That is, in FIGS. 1 and 2, a disc-shaped spring receiver 32 is movably fitted to the lever shaft 2 on the right side of the interlock plate 13.
A reverse select spring 33 is arranged between the spring receiver 32 and the inner end surface of the cap 4. Further, between the spring receiver 32 and the interlock plate 13, more precisely, between another spring receiver 34 fitted to the lever shaft 2 so as to be in close contact with the interlock plate 13, the first speed- A second speed select spring 35 is provided. Therefore, these select springs 33 and 35 are arranged in series with each other. The boss 34a of the other spring receiver 34 extends toward the spring receiver 32.

Further, a snap ring (retaining ring) 36 is attached to a predetermined portion of the inner surface of the cap 4 between the spring receivers 32 and 34. That is, when the lever shaft 2 is moved to the neutral position, the right spring receiver 32 in FIGS. 1 and 2 abuts on the snap ring 36, so that the elastic force of the reverse select spring 33 does not act on the lever shaft 2. ing. Here, the reverse select spring 3
The elastic force of No. 3 is set to be larger than the elastic force of the first-speed / second-speed select spring 35.

On the other hand, the above-described reverse lever inner lever 1
On the left side of FIGS. 1 and 2 with respect to 4, a further spring receiver 37 is fitted on the lever shaft 2 and is prevented from coming off by a snap ring 38. A 5-speed-6-speed select spring 39 is disposed between the spring receiver 37 and the reverse lever inner lever 14. The spring receiver 37 is disposed at a position where it comes into contact with the inner surface of the case 1 at the neutral position, and the elastic force of the 5-speed / 6-speed select spring 39 is the elastic force of the above-described 1st / 2-speed select spring 35. It is set to be slightly larger.

Therefore, in the neutral position,
1 and 2 abuts on the snap ring 36, so that the first-speed / second-speed select spring 35 is connected to the lever shaft 2 via the spring receiver 34, the interlock plate 13, and the forward lever inner lever 9. 1 and 2 and the spring receiver 37 in FIGS. 1 and 2 abuts against the inner surface of the case 1, so that the fifth-speed / sixth-speed select spring 39 is moved through the inner lever 14 for the reverse gear and the lever shaft 2. Is pushed rightward in the figure, and the lever shaft 2
Is held in a neutral position.

Here, an operation load increasing mechanism for increasing the moderation feeling when setting the reverse gear or the operating load when setting the reverse gear will be described. At a predetermined position on the outer periphery of the cylindrical portion 10 of the above-described inner lever 9 for the forward gear, a projection 40 projecting in the radial direction is formed.
The shape of the projection 40 is shown in FIG. 4, and the inclined surfaces 41 and 42 on the left and right sides sandwiching the point where the projection height is the highest.
The slope of the right slope 41 in the drawing, that is, the slope 41 of the forward-stage select position side is large,
The slope of the inclined surface 42 on the opposite side is small.

The lock ball 43 faces the projection 40.
The lock ball mechanism 44 that acts to press the cover 1 is attached to a predetermined portion of the case 1. The lock ball mechanism 44 movably accommodates and holds a sleeve 45 holding the lock ball 43 at the distal end in a cylindrical container 46 having an open distal end, and also includes an inner end surface of the cylindrical container 46 and a sleeve. 45 between the spring 47
The lock ball 43 is configured to protrude toward the distal end side of the container 46 by the elastic force of the spring 47, and the container 46 is further penetrated along the center axis of the mounting bolt 48 to be integrated. The bolt 48 is fixed to the case 1 by screwing it to the case 1.

When the lever shaft 2 is moved to the reverse gear position, the relative position between the lock ball 43 and the protrusion 40 is determined immediately before the reverse gear select position (for example, the first gear / second gear select position). As a result, the slope 41 of the projection 40 having a large slope contacts the lock ball 43, and the rock ball 43 has the slope 42 of a small slope from the point where the projection height of the projection 40 is the largest immediately before reaching the reverse gear select position. It is set at a position off the side.

FIG. 5 shows an example of a gear train of a manual transmission in which the above-mentioned shift mechanism is incorporated. That is, the input shaft 50 and the output shaft 51 are arranged in parallel with each other, and between the input shaft 50 and the output shaft 51, the first speed gear pair 5 is arranged in order from the left of FIG.
2, gear pair 53 for second speed, gear pair 54 for third speed, gear pair 55 for fourth speed, gear pair 56 for fifth speed, gear pair 5 for sixth speed
7 are provided. That is, the first-speed drive gear 5
2a is rotatably attached to the input shaft 50, and the first speed driven gear 52b meshed with the input shaft 50
It is attached so that it rotates integrally. The second speed drive gear 53a is rotatably mounted on the input shaft 50, while the second speed driven gear 53b meshing with the second speed drive gear 53a is mounted on the output shaft 51 so as to rotate integrally therewith.

Between these drive gears 52a and 53a, a first-speed / second-speed synchronizer 58 is disposed. This synchronizing device 58 has a configuration similar to that of a conventionally known device, in which a hub sleeve movable in the axial direction is provided on the outer peripheral side of a hub integrated with the input shaft 50, and this hub sleeve is connected to a shift fork. By moving by
The hub is connected to one of the drive gears 52a and 53a.

A third-speed drive gear 54a is rotatably mounted on the input shaft 50, and a third-speed driven gear 54b meshed with the third-speed drive gear 54b is mounted on the output shaft 51 so as to rotate integrally therewith. Further, a fourth speed drive gear 55a is rotatably attached to the input shaft 50, and a fourth speed driven gear 55b meshed with the fourth speed drive gear 55a is attached to the output shaft 51 so as to rotate integrally therewith. And, between the drive gears 54a and 55a,
A 4-speed synchronizing device 59 is provided. The third-speed / fourth-speed synchronizer has the same configuration as the first-speed / second-speed synchronizer described above.

Further, a fifth speed drive gear 56a is mounted on the input shaft 50 so as to rotate integrally therewith, and a fifth speed driven gear 56b engaged with the drive gear 56a is rotatably mounted on the output shaft 51. A sixth-speed drive gear 57a is attached to the input shaft 50 so as to rotate integrally therewith, and the sixth-speed driven gear 5
7b is rotatably attached to the output shaft 51. A reverse stage drive gear 60 is arranged between the fifth speed drive gear 56a and the sixth speed drive gear 57a so as to rotate integrally with the input shaft 50.

On the other hand, the fifth-speed driven gear 56b
The fifth-sixth-speed synchronizing device 61 is provided between the sixth-speed driven gear 57b and the sixth-speed driven gear 57b. The synchronizer 61 has substantially the same configuration as the above-described first-speed / second-speed synchronizer or third-speed / fourth-speed synchronizer, and moves in the axial direction on the outer peripheral side of the hub integrated with the output shaft 51. The hub is connected to one of the driven gears 56b and 57b by a hub sleeve. A reverse-stage driven gear 63 is formed integrally with the hub sleeve 62. A reverse-stage idle gear 64 that selectively meshes with the reverse-stage driven gear 63 and the aforementioned reverse-stage drive gear 60 includes: The gears 60 and 63 are arranged to move on the outer peripheral side in the axial direction. And output shaft 5
1, for example, front differential (not shown)
An output gear 65 for transmitting torque to the motor is mounted so as to rotate integrally.

FIG. 6 shows the arrangement of the shift positions selected by the shift lever.
Reference numerals 6 to 6 denote shift positions of the first to sixth speeds, reference numeral R denotes a reverse gear position, and reference numeral N denotes a neutral position. By moving the shift lever to any of these shift positions, the above-described lever shaft 2 is operated by the cable connected to the shift lever. In particular,
By moving the shift lever from the neutral position in the left-right direction of FIG. 6, that is, by performing a select operation, the lever shaft 2 moves in the left-right direction of FIGS. 1 and 2 (the axial direction of the lever shaft 2). By moving the shift lever to any of the gear positions at any of the select positions, that is, by moving the shift lever up and down in FIG. 6, the lever shaft 2 is configured to rotate about its central axis. I have.

Next, the operation of the above-described shift mechanism will be described. When the shift lever is selected as described above, the lever shaft 2 moves in the left-right direction in FIGS. 1 and 2, and the forward inner lever 9 or the reverse inner lever 14 moves to any of the select positions. Let me do. FIG. 1 shows a state in which the reverse gear is selected. In this state, the inner lever 14 for the reverse gear is moved to a position where it engages with the shift fork head 30 for the reverse gear, and the other shift fork heads are shifted. 18,2
6 and 27, the interlock plate 13 is engaged, and the lever portion 11 of the forward-stage inner lever 9 is engaged with the pin 24 of the temporary engagement mechanism 23.

FIG. 3 shows an engagement state between the lever portion 11 and the pin 24. When the shift lever is shifted to the reverse gear in this state, the lever shaft 2 is rotated about its central axis, and rotates counterclockwise in FIG. Accordingly, the inner lever 14 for the reverse gear is provided.
5 presses the reverse gear shift forehead 30, and as a result, the reverse gear shift fork 31 moves the reverse gear idle gear 64 shown in FIG. 5 from the position shown by the solid line to the position shown by the broken line. . At the same time, the forward lever inner lever 9 is rotated in the counterclockwise direction in FIG.
The speed fork shaft 19 is moved in the axial direction.

The moving direction of the first-speed / second-speed fork shaft 19 is a direction for setting the first speed, and accordingly, the first-speed / second-speed synchronizer 58 is operated, and the hub sleeve is moved to the first speed. It moves to the speed drive gear 52a side. As a result, torque is transmitted between the output shaft 51 and the input shaft 50 by the frictional force generated by the first-speed / second-speed synchronizer 58. In that case, if the input shaft 50 is rotating by inertial force,
Since the vehicle is stopped and the output shaft 51 is not rotating, the rotation of the input shaft 50 is stopped. In this state, the reverse-stage idle gear 64 is meshed with the drive gear 60 and the driven gear 63, so that these gears 60 and 63 do not slide or so-called galling, thereby preventing gear noise.

The action of stopping the rotation of the input shaft 50 by the frictional force of the first-second speed-synchronizer 58 is performed by the first-speed second-speed fork shaft 19 via the pin 24 from the forward-stage inner lever 9. When the operating force acting on the inner lever 9 is small and the operating force increases by a predetermined value or more, the inclined surface 21 formed at the tip end of the forward lever inner lever 9 is
Press down 4. As a result, the forward lever inner lever 9
Is disengaged from the first and second speed fork shafts 19,
The first-second speed synchronizer 58 does not operate any further. That is, the first-speed / second-speed synchronizer 58 does not operate to set the first speed.

Next, the operation of the operation load increasing mechanism will be described. Since the reverse gear is generally operated and selected from the neutral position, the movement of the lever shaft 2 to the above-described reverse gear select position is to move rightward in the figure from the neutral position shown in FIG. It is performed by In this case, since the elastic force of the first-speed / second-speed select spring 35 described above is smaller than the elastic force of the reverse select spring 33 arranged in series with the first-speed / second-speed select spring 35, the lever shaft 2 is moved to the first-speed / second-speed select spring 35. Move while compressing. That is, the elastic force is generated as an operation load. Therefore, the first-speed / second-speed select spring 35 corresponds to the first elastic mechanism of the present invention.

When the lever shaft 2 moves to the first-speed / second-speed select position, the boss portion 34a of the spring receiver 34 that is in contact with the interlock plate 13 comes into contact with the spring receiver 32 and starts pushing it. As a result, the lever shaft 2 moves in the axial direction while compressing the reverse select spring 33. Therefore, the boss portion 34a of the spring receiver 34 and the reverse select spring 33 correspond to a second elastic mechanism of the present invention.

At the same time, the lock ball 43
Contacts the protrusion 40. Therefore, when the lever shaft 2 moves toward the reverse gear select position beyond the first-gear second-gear select position, the protrusion 40 pushes the lock ball 43 up against the elastic force of the spring 47. As a result, the load required to push up the lock ball 43 by the one inclined surface 41 of the protrusion 40 and the load required to compress the reverse select spring 33 are caused by moving the lever shaft 2 toward the reverse gear select position. It acts as a load when moving in the axial direction.

When the lock ball 43 exceeds the position where the projection 40 has the highest height, the movement of the lever shaft 2 does not push up the lock ball 43, so that the load for selecting the reverse gear is reduced. . In particular, in the above example, an inclined surface 42 is formed on the left side of the projection 40 in FIGS. 1 and 2, and this is an inclined surface that rises to the right in FIG. When pressed by the elastic force of the lever 47, a lateral component in the drawing by the pressing force acts to the right, which acts to assist the movement of the lever shaft 2 to the reverse gear select position. . As a result, in this state, the load for the operation to the reverse gear select position further decreases, and the lever shaft 2 can be moved to the reverse gear select position with a small operating force.

FIG. 7 is a diagram showing the operating load toward the reverse-stage select position of the lever shaft 2 for each moving position. That is, during the period from the neutral position to the first / second speed select position, the load F corresponding to the compression amount of the first / second speed select spring 33 is obtained.
It becomes 1. If the speed exceeds the 1st- 2nd speed select position,
The load F4 is obtained by adding the load F2 according to the compression amount of the reverse select spring 33 and the load F3 by the lock ball mechanism 44. Then, the lock ball 43 is moved to the protrusion 40.
When the left slope 42 is pressed, the load F5 is reduced by the horizontal component force. If there is no inclined surface 42, that is, if the protrusion 40 maintains a constant height (projection amount), the load F6 is indicated by a chain line in FIG. Therefore, the hatched portions in FIG.
Thus, the operation load can be reduced.

In the case of setting the reverse gear as described above, the select operation load suddenly increases from the point of time when it exceeds the first-gear / second-gear select position, so that the selection of the reverse gear is realized by the increase in the load. be able to. As a result, erroneous operation to the reverse gear is prevented. At the end of the selection operation to the reverse gear, the operation load is
, The operability is improved.

In the above embodiment, the shape of the projection in the operation load increasing mechanism is a shape in which both sides sandwiching the highest projection height are inclined surfaces. However, the present invention is different from this. Shaped protrusions can also be used and are not limited to the above embodiment. Further, the operating load generating mechanism in the present invention is not limited to the one constituted by the above-described protrusion, the lock ball pushed back by the same, and the spring pressing the lock ball. What is necessary is just to be comprised so that a load may be increased discontinuously. Further, the present invention can be applied to a manual transmission other than the manual transmission capable of setting six forward speeds.

[0048]

As described above, according to the apparatus of the present invention, the load at the time of selecting the reverse gear is completely independent of the mechanism for generating the select load at the forward gear.
The operability can be improved by reducing the selection operation load of the forward gear, and the operation load at the time of selecting the reverse gear can be changed by moving the second elastic mechanism and the inner lever or an integral member with the moving direction. Therefore, the selection load of the reverse gear can be set to a necessary and sufficient load without increasing the size of these mechanisms.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an example of the present invention, and is a cross-sectional view illustrating a state in which a reverse gear is set.

FIG. 2 is a sectional view of a neutral state.

FIG. 3 is a sectional view showing the temporary engagement mechanism.

FIG. 4 is a partial view showing a shape of a protrusion constituting the operation load generating mechanism.

FIG. 5 is a skeleton diagram showing an example of a gear train of a manual transmission to which the present invention can be applied.

FIG. 6 is a schematic diagram showing an arrangement of shift positions in the shift device.

FIG. 7 is a diagram showing a change in an operation load at the time of a selection operation to a reverse gear.

[Explanation of symbols]

 9 Inner lever for forward gear 14 Inner lever for reverse gear 32 Spring receiver 33 First speed / second speed select spring 34 Spring receiver 34a Boss 35 Reverse select spring 40 Projection 43 Lock ball 44 Lock ball mechanism

Claims (1)

[Claims] An inner lever for performing a select operation for selecting a shift position and a shift operation for achieving a shift position, wherein a select operation direction for a reverse position is a select operation for a predetermined forward position. In a select load generating device of a manual transmission, the direction of which is the same as the direction and the reverse position is set to a position beyond the predetermined forward position, the inner lever is operated to select the predetermined forward position. A first elastic mechanism that generates a reaction force, and a reaction force that is larger than the reaction force with respect to the selection operation of the inner lever when the inner lever performs the selection operation to the reverse gear position beyond the predetermined forward gear position. A second elastic mechanism that generates a force and the inner lever or the lever when the inner lever is moved to the reverse gear position beyond the predetermined forward gear position. An operating load increasing mechanism for generating a resistance to a selecting operation by pressing a member that operates integrally with the operating direction in a direction perpendicular to the operating direction thereof. .