JP2013113385A - Shift detention device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shift detention device for a vehicle, helping to conduct a smooth shift change with the most suitable operating force according to the shift change.SOLUTION: The shift detention device for the vehicle includes a shift rod 1 axially slidable with an operation of a shift lever 10 and a cutout 20 having a first cutout 21 formed corresponding to at least a neutral position and a second cutouts 22 and 23 provided next to the first cutout 21 and corresponding to a predetermined change speed position, and a ball 5 coming in contact with the cutout 20 along a form of the cutout 20 through being pressed to the cutout 20 of the shift rod 1. The cutout 20 of the shift rod 1 is formed of a continued curve with a small-diameter circular shape from the first change point P1 and a continued curve with a large-diameter circular shape from the second change point P2. A distance L1 from the first change point P1 to a peak-load generation point P0 is shorter than a distance L2 from the second change point P2 to the peak-load generation point P0.

Description

  The present invention relates to a shift detent device for a vehicle in which a driver can perform a smooth shift change in a manual transmission vehicle.

  2. Description of the Related Art Conventionally, in a shift transmission device for a manual transmission vehicle, a first notch portion that is slidable by operating a shift lever at the time of a shift change and is formed corresponding to at least a neutral position and the first cut portion. A shift rod having a notch formed of a second notch formed adjacent to the notch and corresponding to a predetermined gear position, and notched by being pressed toward the notch of the shift rod And a pressing member that comes into contact with the notch portion along the shape of the portion. As such a shift detent device, for example, in Japanese Utility Model Laid-Open No. 3-94464 (hereinafter referred to as Patent Document 1), an outer diameter portion and a notch portion (check groove) formed of resin on the outer periphery of a steel shift rod. And a shift detent device using a shift rod in which the contact point between the check groove and the outer diameter portion of the shift rod is smoothly formed in a round shape.

Japanese Utility Model Publication No. 3-94464

  By the way, in such a shift detent device for a vehicle, when the driver operates the shift lever to shift change from the neutral position to the predetermined gear position, or when shift changing from the predetermined gear position to the neutral position. Since the peak load is generated at the most protruding position between the first notch portion at the neutral position and the second notch portion at the gear position, the driver must perform this peak load at the time of the shift change. The shift operation will be performed while feeling. It is important to appropriately set the operation force felt by the driver during such a shift change, but the driver feels the shift operation heavy, especially when shifting from a predetermined gear position to the neutral position. In such a case, an excessive operating force is applied to the shift change, and the shift lever may not be stopped even when it reaches the neutral position, and may be further shifted to the opposite gear position. . In the above-mentioned Patent Document 1, when the pressing member (check ball) gets over the corner portion of the check groove by simply forming the contact point between the check groove and the outer diameter portion smoothly with an appropriate round shape, the peak load is increased. There is a problem that the shift feeling is improved so as not to occur, and the smooth shift feeling is not improved according to the difference in the shift change of the driver.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a shift detent device for a vehicle in which a driver can smoothly perform a shift change with an optimum operation force corresponding to the shift change.

  According to one aspect of the vehicle shift detent apparatus of the present invention, a first notch portion that is slidable in the axial direction by operating a shift lever at the time of a shift change and formed at least corresponding to a neutral position, and the first notch portion. A shift rod having a notch formed of a second notch formed adjacent to the notch and corresponding to a predetermined gear position, and pressed toward the notch of the shift rod In a shift detent device for a vehicle having a pressing member that is in contact with the cutout portion along the shape of the cutout portion, the shift lever is operated from the neutral position by operating the shift lever. When the shift rod is moved to the predetermined gear position through the peak load generation point, the change in the increase in the operation force that increases toward the peak load generation point is changed. The distance from the first change point at which the rate is changed to the peak load generation point is determined by operating the shift lever to pass the peak load generation point from the predetermined shift position to the neutral position. When the rod is moved, the rod is formed to be shorter than the distance from the second change point at which the change rate of the increase in the operating force rising toward the peak load generation point is changed to the peak load generation point.

  According to the shift detent device for a vehicle according to the present invention, the driver can smoothly perform a shift change with an optimum operation force according to the shift change.

It is a perspective view of the shift lever vicinity which concerns on one Embodiment of this invention. It is a principal part expanded sectional view of the shift detent apparatus of the vehicle which concerns on one Embodiment of this invention. It is sectional drawing which shows the shape of the notch part of the shift rod which concerns on one Embodiment of this invention. FIG. 4 is an enlarged cross-sectional view of a part A in FIG. 3. It is explanatory drawing of the specific shape of the shape of the notch part of the shift rod which concerns on one Embodiment of this invention. It is action explanatory drawing at the time of the shift change which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a shift rod, and this shift rod 1 is supported by a transmission case 2 so as to be slidable in the axial direction.

  In the middle of the shift rod 1, for example, a shift fork 4 that engages with a sleeve 3 or the like of the transmission is projected.

  On the front end side of the shift rod 1, there are three cutout portions (a first cutout portion 21 in the center, one second cutout portion 22 adjacent to the front of the first cutout portion 21, and the first cutout portion 21. A notch 20 is formed which is formed of the other second notch 23) adjacent to the rear of the notch 21, and is a pressing member urged from the transmission case 2 toward the notch 20. The ball 5 is pressed and brought into contact therewith.

  A shift arm 6 that is linked to the movement of the shift lever 10 is connected to the rear of the shift fork 4 of the shift rod 1.

  As shown in FIG. 2, the shift lever 10 is inserted through the opening 11 of the floor panel, the upper end portion protrudes to the side of the driver's seat, and the lower end portion is connected to the shift arm 6. A gap between the shift lever 10 and the opening 11 of the floor panel is shielded by a boot 12 or the like.

  In the manual transmission vehicle according to the embodiment of the present invention, when the shift position of the shift lever 10 is the neutral position, the ball 5 is locked in the first notch portion 21 of the notch portion 20 ( The state of FIG.

  In FIG. 2, when the leftmost lane is selected and the shift lever 10 is tilted forward from the neutral position to perform a shift change, the shift rod 1 is retracted and the ball 5 is moved to one of the notches 20. The second notch 22 is locked and the first speed is selected. On the contrary, when the shift lever 10 is tilted backward from the neutral position and the shift change is performed in this lane, the shift rod 1 is moved forward, and the ball 5 is moved to the other second notch portion of the notch portion 20. The second speed is selected.

  When the lane adjacent to the right side is selected from this lane and the shift lever 10 is tilted forward from the neutral position and the shift change is performed, the shift rod 1 is retracted and the ball 5 is moved to the first notch portion 20. The second notch 22 is engaged and the third speed is selected. On the contrary, when the shift lever 10 is tilted backward from the neutral position and the shift change is performed in this lane, the shift rod 1 is moved forward, and the ball 5 is moved to the other second notch portion of the notch portion 20. The fourth gear is selected.

  Further, when a lane adjacent to the right side is selected from this lane and the shift lever 10 is tilted forward from the neutral position and the shift is changed, the shift rod 1 is retracted, and the ball 5 is moved to one of the notches 20. The second notch 22 is engaged and the fifth speed is selected. On the contrary, when the shift lever 10 is tilted backward from the neutral position and the shift change is performed in this lane, the shift rod 1 is moved forward, and the ball 5 is moved to the other second notch portion of the notch portion 20. The 6th speed is selected.

  Further, when a lane adjacent to the right side is selected from this lane and the shift lever 10 is tilted backward from the neutral position to perform a shift change, the reverse is selected.

  As described above, the vehicle according to the embodiment of the present invention is configured as a 6-speed manual transmission vehicle and a reverse 1-speed manual transmission vehicle.

  Next, in FIGS. 3 and 4, the shape of the notch 20 of the shift rod 1 will be described.

  In the present embodiment, one second notch 22 formed adjacent to the first notch 21 corresponding to the neutral position and the other second notch 23 are the first The center of the notch 21 is formed in a substantially line object. Accordingly, portions having the same shape in one second notch 22 and the other second notch 23 are denoted by the same reference numerals and will be described below.

  When the driver operates the shift lever 10 to move the shift rod 1 from the neutral position to the predetermined gear position, the driver operates the shift lever 10 against the pressing force of the ball 5 by the gradually increasing slope portion 21a. As a result, the operating force increases. When the peak load generation point P0 at which the projection height is the highest and the force for pushing up the ball is the highest is reached, the slope 22a gradually decreases until the predetermined gear position, so that the pressing force of the ball 5 In addition, the operation force of the driver's shift lever 10 is reduced.

  On the contrary, when the driver operates the shift lever 10 to move the shift rod 1 from the predetermined shift position to the neutral position, the shift lever 1 resists the pressing force of the ball 5 by the gradually increasing slope portion 22a. By operating 10, the operating force increases. When the peak load generation point P0 at which the projection height is the highest and the force for pushing up the ball is the highest is reached, the slope portion 21a gradually decreases until the predetermined gear position, so that the pressing force of the ball 5 In addition, the operation force of the driver's shift lever 10 is reduced. Details of the change in the operating force of the shift lever 10 will be described later.

  In performing this shift change operation, in this embodiment, when the shift lever 10 is operated to move the shift rod 1 from the neutral position to the predetermined gear position, the peak load generation point P0 is directed. A first change point P1 is set at which the rate of change of the rising operating force is first reduced. In addition, when the shift rod 1 is moved from the predetermined shift position to the neutral position, a second change point P2 is set, at which the rate of change of the operating force that increases toward the peak load generation point P0 is first reduced. Has been.

  A small circular surface (radius Rs) is continuously formed from the first change point P1, and a large circular surface (radius Rl:> Rs) is formed from the second change point P2. The distance L1 from the first change point P1 to the peak load generation point P0 is formed shorter than the distance L2 from the second change point P to the peak load generation point P0. In FIG. 4, a point Pc is a connection point (contact point) between the small-diameter circular curved surface from the first change point P1 and the large-diameter circular curved surface from the second change point P2. Therefore, the point P1 to the point Pc are formed by a circular curved surface having a radius Rs, and the point P2 to the point Pc are formed by a circular curved surface having a radius Rl. In the embodiment of the present invention, the curved surface 21b is formed from the first change point P1 to the connection point Pc, the curved surface 22b is formed from the second change point P2 to the connection point Pc, and the peak load generation point P0 is the curved surface 21b. The shape is set on the top.

  Next, a more specific shape of the cutout portion 20 of the shift rod 1 according to the present embodiment will be described with reference to FIG.

  An inclined surface portion 22a from one second notch portion 22 to the first notch portion 21 and an inclined surface portion 22a from the other second notch portion 23 to the first notch portion 21, A circle having a preset large diameter radius Rl is formed which is in contact with each other at the second change points P2 and P2.

  And the protrusion part where the slope part 21a which goes to the one 2nd notch part 22 from the 1st notch part 21 and the large diameter radius Rl is formed with the radius Rs of the preset small diameter, A point where the circle having the radius Rs contacts the slope 21a is set as the first change point P1, and a point where the circle having the small radius Rs and the circle having the large radius Rl are set as the connection point Pc.

  Similarly, the other second cutout portion 23 is set in advance with a protruding portion where the slope portion 21a from the first cutout portion 21 to the other second cutout portion 23 and the large-diameter radius Rl intersect. The point where the small radius Rs and the slope 21a are in contact with each other is set as the first change point P1, and the circle with the small radius Rs and the circle with the large radius Rl are formed. A contact point is set as a connection point Pc. By forming the shape of the cutout portion 20 of the shift rod 1 in this way, one of the second cutout portion 22 and the other second cutout portion 23 has a small diameter from the first change point P1. A circular curved surface (radius Rs) is continuously formed, and a large circular curved surface (radius Rl) is continuously formed from the second change point P2, and from the first change point P1. The distance L1 to the peak load generation point P0 is formed shorter than the distance L2 from the second change point P to the peak load generation point P0.

Next, the operation of the embodiment of the present invention will be described with reference to FIG.
First, when shifting from the neutral position to the first speed, the shift rod 10 is moved backward from the neutral position to retract the shift rod 1. Then, the operating force is increased by operating the shift lever 10 against the pressing force of the ball 5 pressed against the first notch portion 21 by the gradually increasing slope portion 21a. Then, from the first change point P1, along with the curved surface 21b, the rate of increase in the operating force becomes weak and reaches the peak load generation point P0 where the protrusion height is the highest and the force for pushing up the ball is the highest. To do. From this peak load generation point P0, since the curved surface 21b, the curved surface 22b, and the inclined surface portion 22a gradually lower from the first speed to the first gear, the operation force of the driver's shift lever 10 is supported by the pressing force of the ball 5 as well. And the ball 5 reaches one of the second notches 22 and smoothly shifts to the first speed.

  Next, when shifting from the first speed to the neutral position, the shift lever 10 is moved backward from the first speed to advance the shift rod 1. Then, the operating force is increased by operating the shift lever 10 against the pressing force of the ball 5 pressed against the one second notch 22 by the gradually increasing slope 22a. Then, from the second change point P1, the rate of increase in the operating force decreases along the curved surface 22b, passes through the connection point Pc, has the highest protrusion height along the curved surface 21b, and pushes up the ball Reaches the peak load generation point P0 at which becomes the highest. From the peak load generation point P0 to the neutral position, the curved surface 21b and the inclined surface portion 21a are gradually lowered, so that the operation force of the shift lever 10 of the driver is reduced with the aid of the pressing force of the ball 5, and the ball 5 is reached to the first cutout portion 21 and is smoothly shifted to the neutral position.

  Next, in the case of a shift change from the neutral position to the second speed, the shift rod 10 is moved backward from the neutral position to advance the shift rod 1. Then, the operating force is increased by operating the shift lever 10 against the pressing force of the ball 5 pressed against the first notch portion 21 by the gradually increasing slope portion 21a. Then, from the first change point P1, along with the curved surface 21b, the rate of increase in the operating force becomes weak and reaches the peak load generation point P0 where the protrusion height is the highest and the force for pushing up the ball is the highest. To do. From the peak load generation point P0 up to the second speed, the curved surface 21b, the curved surface 22b, and the inclined surface portion 22a are gradually lowered, so that the operation force of the shift lever 10 of the driver is supported by the pressing force of the ball 5. The ball 5 reaches the other second notch 22 and smoothly shifts to the second speed.

  Next, when shifting from the second speed to the neutral position, the shift lever 10 is moved back from the second speed to move the shift rod 1 backward. Then, the operating force is increased by operating the shift lever 10 against the pressing force of the ball 5 pressed against the other second notch 23 by the gradually increasing slope 22a. Then, from the second change point P1, the rate of increase in the operating force decreases along the curved surface 22b, passes through the connection point Pc, has the highest protrusion height along the curved surface 21b, and pushes up the ball Reaches the peak load generation point P0 at which becomes the highest. From the peak load generation point P0 to the neutral position, the curved surface 21b and the inclined surface portion 21a are gradually lowered, so that the operation force of the shift lever 10 of the driver is reduced with the aid of the pressing force of the ball 5, and the ball 5 is reached to the first cutout portion 21 and is smoothly shifted to the neutral position.

  A shift change from another gear position to the neutral position or a shift change from the neutral position to another gear position is performed in the same manner.

  At this time, in the present embodiment, the shape of the notch portion 20 of the shift rod 1 is formed continuously from the first change point P1 with a small-diameter circular curved surface (radius Rs), and the second change point. Since a large circular surface (radius Rl) is continuously formed from P2, the peak load can be set low and the generation of the peak load can be made smooth.

  Further, the distance L1 from the first change point P1 to the peak load generation point P0 is formed shorter than the distance L2 from the second change point P to the peak load generation point P0, and the peak load generation point P0 is neutral. Because it is formed near the position, the change in load up to the peak load is greater when shifting from the neutral position to the predetermined gear position than when shifting from the predetermined gear position to the neutral position. Therefore, even if the peak load is set to be low, the driver can maintain an appropriate hold feeling at the neutral position.

  Then, according to the present embodiment, the distance L1 from the first change point P1 to the peak load generation point P0 is set to the second change instead of simply bringing the position of the peak load generation point P0 close to the neutral position. Since the distance is shorter than the distance L2 from the point P to the peak load generation point P0, the shift change from the neutral position to the predetermined shift position is performed when the shift change is performed from the predetermined shift position to the neutral position. Since the operating force of the shift lever 10 is reduced at a position earlier than the case and the change in load up to the peak load is low and gentle, it is excessive when the shift lever 10 is returned from the predetermined shift position to the neutral position. The shift operation is not performed with a sufficient operating force, and a shift operation for returning from a predetermined gear position to the neutral position is performed with an appropriate operating force. It is possible to smoothly perform the shift operation including the selection and the like after continuously. For example, when a shift down operation such as (5th speed) → (neutral position) → (4th speed) is performed, when the shift lever 10 is returned from (5th speed) to (neutral position) with an excessive operating force, (neutral) The shift lever 10 could not be stopped at the position), and there was a risk of shifting to (6-speed). According to the present embodiment, since a shift change is prevented from being performed with an excessive operating force, when the shift lever 10 is returned from (5th gear) to (neutral position), this (neutral position) By appropriately locking the shift lever 10 and selecting an adjacent lane, it is possible to smoothly perform a downshift operation to (fourth speed).

  In the embodiment of the present invention, an example in which one second notch portion 22 and the other second notch portion 23 are provided on a substantially line object with the first notch portion 21 interposed therebetween will be described. However, these need not be provided substantially.

  Further, in the embodiment of the present invention, an example in which the present invention is applied to a 6-speed forward and 1-reverse manual mission vehicle has been described. However, the present invention is not limited to this. Needless to say, this can also be applied.

  Furthermore, in the embodiment of the present invention, the shape between the first change point P1 and the second change point P2 of the notch 20 is the circular curved surface 21b with the small diameter Rs and the large radius Rl. The curved surface 22b of the circle is connected at the connection point Pc, but another curved surface or straight line may be provided between the curved surface 21b and the curved surface 22b.

1 Shift rod 2 Transmission case 3 Sleeve 4 Shift fork 5 Ball (pressing member)
6 Shift arm 10 Shift lever 20 Notch portion 21 First notch portion 21a Slope portion 21b Curved surface 22 One second notch portion 22a Slope portion 22b Curved surface 23 Other second notch portion P0 Peak load generation point P1 First change point P2 Second change point Pc Connection point

Claims (3)

A first notch portion that is slidable in the axial direction by operation of a shift lever at the time of a shift change and is formed corresponding to at least the neutral position, and a predetermined gear position adjacent to the first notch portion A shift rod having a notch formed of a second notch formed corresponding to
In a shift detent device for a vehicle, comprising: a pressing member that is pressed toward the notch portion of the shift rod and contacts the notch portion along the shape of the notch portion.
When the shift lever is moved from the neutral position through the peak load generation point of the operating force of the shift lever to the predetermined gear position by operating the shift lever, the peak load generation point is The distance from the first change point at which the rate of change of the rising operating force to the first change is changed to the peak load generation point is determined by operating the shift lever to generate the peak load from the predetermined gear position. When the shift rod is moved to the neutral position through a point, the peak from the second change point at which the rate of change of the operating force rising toward the peak load generation point is changed first. A shift detent device for a vehicle, wherein the shift detent device is shorter than a distance to a load generation point.   The cross-sectional shape in the axial direction between the first change point and the second change point of the notch portion of the shift rod is a curved surface of a small diameter circle continuous from the first change point and the second change point. 2. The shift detent device for a vehicle according to claim 1, wherein a curved surface of a large-diameter circle continuing from the change point is continuously formed.   The first change point is a change point at which the rate of change of the operating force rising toward the peak load generation point is reduced, and the second change point is directed toward the peak load generation point. The shift detent device for a vehicle according to claim 1, wherein the change detent device is a change point at which the rate of change in the increase in the operating force is reduced.

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