JP4792166B2 - Shift device for automatic transmission - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shift device for a shift operation used in an automatic transmission, and in particular, allows a shift operation to be performed in XY2 directions orthogonal to each other of a shift lever and specifies a shift position. The present invention relates to a shift device for an automatic transmission which is configured to be performed by a detent plate (detent block) having a predetermined form.
[0002]
[Prior art]
A conventional shift operation shift device used in an automatic transmission includes, for example, a shift lever 10 that swings and moves in the XX direction and the YY direction as shown in FIG. A detent plate 20 with which the pawl 120 is appropriately engaged and which regulates each shift position of P, R, N, D, L, etc. in the transmission, and the detent plate 20 are attached to the main shift. Operates in conjunction with the mounting bracket 50 which serves to mount the entire apparatus on a steering column, etc., and the swinging movement of the shift lever 10 in the YY direction with the O1 point formed at the tip of the shift lever 10 as a fulcrum. The function of transmitting to the transmission the operation to the positions regulated by P, R, N, D, and L, which are the respective shift positions in the detent plate 20. A transmission lever 30 which fulfill, is made of. In such a configuration, the shift lever 10 is always engaged with the detent plate 20 at the engagement claw 120 with the O2 point, which is the rotation center point of the swinging motion in the XX direction, as a fulcrum. In this way, it is pressed in the XX direction with a predetermined spring reaction force.
[0003]
[Problems to be solved by the invention]
By the way, in the above-described conventional device, when a gear shifting operation is to be performed, first, the grip lever 10 is held in the direction of the XX direction by holding the knob portion 110 of the shift lever 10 and the spring acting in this direction. Operate against the reaction force. As a result, the engagement state of the engagement claws 120 that have been engaged with predetermined positions such as P, R, N, D, and L in the detent plate 20 is released. In such a state, the knob portion 110 of the shift lever 10 is moved in the YY direction. When the force is removed from the knob portion 110 at this position, the shift lever 10 operates so that the engaging claw 120 engages with the detent plate 20 by the action of the spring reaction force acting at the point O1. . As a result, the engagement of the engagement claw 120 to the predetermined engagement position formed on the detent plate 20 is completed. At the same time, a shift shift operation to a predetermined position on the detent plate 20 is transmitted to the transmission by the operation of the transmission lever 30 accompanying the swinging movement of the shift lever 10 in the YY direction. It becomes. In such a series of shift operations, the engaging claw 120 of the shift lever 10 and each detent portion of the detent plate 20 are always contacted or slid in a state of receiving a predetermined impact load. ing. Accordingly, it is necessary to increase the wear resistance or impact resistance strength of each part including the engaging claw 120. Therefore, high-grade materials are used for these portions, or special treatments such as carburizing and quenching are performed. For these reasons, the conventional apparatus has a problem that the mass of the entire apparatus increases or the manufacturing cost increases. In order to solve such a problem, the engagement load of the engagement claw (detent pin) in the detent portion due to the operation of the shift lever is reduced, and thereby the device including the detent portion is started. An object (problem) of the present invention is to provide a shift device for an automatic transmission that is reduced in size and weight as a whole and further reduces the manufacturing cost.
[0004]
[Means for Solving the Problems]
In order to solve the above problems, the following measures are taken in the present invention. That is, according to the first aspect of the present invention, a shift operation shift device used in an automatic transmission has a knob portion on one end side, and is formed on a part of a shift piece described later. Oscillates in the XX direction, which is a fixed direction, with the point as a fulcrum, and is orthogonal to the XX direction with the tip formed on the side opposite to the side where the knob is provided as a fulcrum. A shift lever that oscillates so as to have a larger arc angle in the YY direction than the oscillating motion in the XX direction, and a pin joint coupled to the tip portion of the shift lever. A rod that linearly moves in the axial direction in response to a swinging motion in the XX direction, and a concentric circle that is provided around the rod so as to support the rod. A shift piece formed to rotate about the axis of the rod in response to a swinging movement of the rod in the YY direction, and holds the shift piece and the rod. A housing for receiving a reaction force of swinging motion in the XX direction and the YY direction, and a detent provided in the housing so as to expand in a fan shape in the YY direction and provided at right angles to the axis of the rod A shift for an automatic transmission comprising: a detent block with which a pin is engaged; and a spring that applies a predetermined pressing force in the axial direction of the rod so as to constantly press the detent pin provided on the rod toward the detent block. In the device, the shift piece has a cylindrical shape, and a part of the axial direction of the rod A detent pin provided in a direction perpendicular to the axis of the rod slides in the slit, and the detent pin is located at the detent block. When the detent pin is engaged with a predetermined position of the block, the detent pin is regulated so as not to be detached from the engagement position, and is relatively rotated around a shaft portion provided at the detent block. A lock mechanism comprising a lever that is mounted so that it can move, and a spring that operates to constantly press the U-shaped groove formed at the tip of the lever against the detent section provided in the detent block. It was decided to adopt a configuration in which the
[0005]
By adopting such a configuration, in the present invention, the engagement and release operation of the detent pin with respect to the detent portion is formed by movement in the axial direction of the rod, and the detent portion of the detent pin Since the shift operation to each of P, R, N, D, and L is formed by the rotational movement of the shift piece around the axis of the rod, the shift lever can be operated in the XX direction and the YY direction. As a result, the shift operation feeling in the entire shift apparatus can be improved.
[0006]
Further, in the present invention, the shift piece is formed in a cylindrical shape, and a slit is provided in a part of the shift piece in parallel to the axial direction of the rod, and the inside of the slit is relative to the axial line of the rod. A configuration was adopted in which detent pins provided at right angles were slid in the axial direction of the rod. By adopting such a configuration, in those of the present invention, it is possible to improve the shift operation feeling. Further, since the input load between the detent pin and the detent block is only a simple pressing pressure, the structure around the detent block can be reduced in size, and the entire shift device can be reduced in weight. Will be able to.
[0007]
Further, in the present invention , when the detent pin is engaged with the position of P which is a specific position of the detent block at the detent block, the detent pin is detached from the engagement position. In order to prevent this, a configuration is adopted in which a lock mechanism is provided to regulate. By adopting such a configuration, the P position lock in the shift operation, that is, the parking lock is surely performed in the present invention. Accordingly, it is possible to improve safety in the shift operation.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the present embodiment has a knob portion 11 on one end side, and has an attachment point (O2) formed on a part of the shift piece 2 to be described later. It swings in the XX direction, which is a fixed direction as a fulcrum, and is orthogonal to the XX direction with a tip 12 formed on the side opposite to the side where the knob 11 is provided as a fulcrum. A shift lever 1 that oscillates so as to have a larger arc angle in the YY direction than the oscillating motion in the XX direction, and a pin joint coupled to the tip portion 12 of the shift lever 1, The rod 3 that linearly moves in the axial direction according to the swinging motion of the shift lever 1 in the XX direction, and the rod 3 is provided concentrically around the rod 3 so as to support the rod 3. Shift The shift piece 2 formed to rotate with the rod 3 around the axis of the rod 3 in response to the swinging movement of the Y-1 in the YY direction, and the shift piece 2 and the rod 3 are held. A housing 7 that receives the reaction force of the shift lever 1 in the XX direction and the YY direction, and is provided at the housing 7 so as to be fanned out in the YY direction. The detent block 5 engaged with the detent pin 55 provided at right angles to the axis (O1O1) of the rod 3 and the detent pin 55 provided on the rod 3 are always pressed against the detent block 5 side. It is basically composed of a spring 4 that applies a predetermined pressing force in the direction of the axis (O1 O1) of the rod 3.
[0009]
In such a basic configuration, the shift piece 2 basically has a cylindrical shape, and a clevis-like bracket is formed at one end of the shift piece 2 so as to be orthogonal to the axis of the cylindrical portion. (Clevis bracket) 21 is provided. An attachment point (O2) of the shift lever 1 is formed at the tip of the clevis bracket 21, and the shift lever 1 swings in the XX direction with the attachment point (O2) as a fulcrum. It is what has become. Further, through the clevis bracket 21, the shift piece 2 rotates together with the rod 3 about the axis (O 1 O 1) of the rod 3 according to the swinging movement of the shift lever 1 in the YY direction. It is what is supposed to do. Furthermore, a slit 25 having an opening hole having a predetermined length is provided at the cylindrical portion of the shift piece 2 so as to be parallel to the axial line (O1 O1) direction, which will be described later. The detent pin 55 slides in the slit (25) in the axis (O1O1) direction.
[0010]
A rod 3 having a predetermined length is inserted into such a cylindrical shift piece 2. A spherical portion formed at the tip 12 of the shift lever 1 is connected to one end of the rod 3 and a connecting portion 31 having a pin joint connecting structure is formed. is there. Further, the connecting portion 31 having this pin joint coupling structure is configured to form a fulcrum (O1) of the swinging motion of the shift lever 1 in the YY direction. Therefore, such an axis (O1O1) of the rod 3 forms a fulcrum of the swinging motion of the shift lever 1 in the YY direction, and the rotational motion of the shift piece 2 accompanying the swinging motion in the YY direction. The center axis of this is also made. A detent pin 55 is attached to a part of the rod 3 so as to be orthogonal to the axis (O 1 O 1) of the rod 3. The detent pin 55 is installed in a long hole-like slit 25 provided in the shift piece 2, and slides in the direction of the axis (O1O1) in the slit 25. It is.
[0011]
The detent pin 55 rotates in the YY direction together with the shift piece 2 and the rod 3 along with the swinging movement of the shift lever 1 in the YY direction and the rotational movement of the shift piece 2. It is what has become. Further, one end of the rod 3 to which such a detent pin 55 is integrally attached and the side not connected to the tip joint 12 of the shift lever 1 (the connecting portion 31) is not the side. At the end, a spring 4 is provided which operates to push the rod 3 toward the pin joint coupling portion in the axial (O1 O1) direction of the rod 3. is there.
[0012]
The shift piece 2 and the rod 3 are basically housed in a housing 7 having a cylindrical shape. The housing 7 serves to receive the reaction force of the swinging movement of the shift lever 1 in the XX direction and the YY direction, and the shift device 1 is attached via an attachment portion 77 provided on one end side of the housing 7. It also serves as a mounting bracket that attaches the whole to a steering column or the like. As shown in FIGS. 1 and 2, an opening 75 is provided in a part of the housing 7 that performs such a function, and the detent pin 55 is connected to the outside through the opening 75. It is intended to protrude. Further, a flange 71 is provided at the opening 75, and a detent block 5 for restricting a predetermined shift position composed of P, R, N, D, L, etc. is attached to the flange 71. It is supposed to be. A detent pin 55 provided so as to protrude from the opening 75 is engaged with each detent portion (P, R, N, D, L) 51 of the detent block 5 attached in this manner. At the same time, the detent pin 55 is pressed against each detent portion 51 side of the detent block 5 by the spring reaction force of the spring 4.
[0013]
A lock mechanism 6 as shown in FIGS. 1 and 3 is provided at such a detent block 5. As shown in FIG. 3, the lock mechanism 6 is formed at a lever 61 which is attached so as to be capable of relative rotational movement around a shaft portion 56 provided at the detent block 5, and at a tip portion of the lever 61. It is basically composed of a spring 66 that operates so as to always press the U-shaped groove 611 side against the detent portion 51 side. The one end 619 side of the lever 61 is connected to a lock release mechanism provided separately, and the U-shaped groove 611 formed at the tip of the lever 61 is P-locked (parking lock) by the operation of the lock release mechanism. ) To be released from the state.
[0014]
The U-shaped groove 611 is provided at the other end, and when the detent pin 55 is engaged with the P position which is one of the detent portions 51, the detent pin 55 is engaged with the U-shaped groove 611 (see FIG. 4) to prevent the detent pin 55 from being detached from this position (P position). That is, a P lock (parking lock) is formed. Further, a stopper portion 615 having a flat tip end portion is provided next to the U-shaped groove 611. The flat portion forming the stopper portion 615 is the detent pin. When 55 is engaged with the R position of the detent portion 51, the detent pin 55 is prevented from unexpectedly moving to the P position from this state. That is, as shown in FIG. 5, R position holding (R position holding) is formed.
[0015]
Further, as shown in FIGS. 1 and 2, a transmission lever 8 is provided on one end side of the shift piece 2 having such a configuration and on the side opposite to the side on which the clevis bracket 21 is provided. It is like that. The transmission lever 8 operates in accordance with a rotational movement about the axis (O1 O1) of the rod 3 of the shift piece 2 accompanying the swinging movement of the shift lever 1 in the YY direction. In addition, the engagement state (position) of the detent pin 55 with each detent portion 51 accompanying the series of operations is transmitted to the transmission side.
[0016]
The operation mode of the embodiment having such a configuration, particularly, a shift shift operation will be described. First. In FIG. 2, the operator (driver) holds (holds) the knob portion 11 of the shift lever 1 in a state against the spring reaction force of the spring 4 acting in this direction in the XX direction. Manipulate. As a result, the detent pin 55 engaged with a predetermined position of P, R, N, D, L, etc. in the detent block 5 is shifted in conjunction with the movement of the rod 3 in the axis (O1O1) direction. A sliding motion is made in the slit 25 provided in the piece 2 to release the engaged state with the detent portion 51 of the detent block 5. In such a state, the knob portion 11 of the shift lever 1 is moved in the YY direction. Then, along with the swinging movement of the shift lever 1 in the YY direction, the shift piece 2 rotates together with the rod 3 about the axis (O1O1) of the rod 3, and is integrated with the rod 3. The provided detent pin 55 moves in the YY direction. When the force is released from the knob portion 11 at this position, the shift lever 1 is moved in the axial direction (O1O1) by the action of the spring reaction force acting on the tip portion 12 via the rod 3. It is returned to the state. As a result, the detent pin 55 is engaged with the detent portion 51 of the detent block 5. As a result, the engagement of the detent pin 55 with the predetermined engagement position (P, R, N, D, L) formed in the detent block 5 is completed. Further, according to such a series of operations, P, R, N, D, L in the detent block 5 by the operation of the transmission lever 8 accompanying the swinging movement of the shift lever 1 in the YY direction. A shift shift operation to a predetermined position such as the above is transmitted to the transmission.
[0017]
In such a series of shift operations, in the present embodiment, each shift operation is reliably performed by the operation of the lock mechanism 6 particularly when shifting to the next P position or shifting to the R position. Sex is to be secured. First, as shown in FIG. 4, when the detent pin 55 is engaged with the P position, which is one of the detent portions 51, the detent pin 55 is formed in a U-shape formed at the distal end portion of the lever 61 forming the lock mechanism 6. The detent pin 55 is prevented from detaching from this position (P position) by engaging in the groove 611. That is, a P lock (parking lock) is formed. In addition, a stopper portion 615 formed in a planar shape is provided next to the U-shaped groove 611 at one tip portion of the lever 61, and the flat portion at the tip that forms the stopper portion 615 As shown in FIG. 5, when the detent pin 55 reaches the R position of the detent portion 51, it comes into contact with the detent pin 55. Thus, the movement of the detent pin 55 from the R position to the P position is suppressed. That is, R position holding (R position holding) is formed. As a result, an unexpected shift from the R position to the P position is suppressed, and the safety of the shift operation is ensured.
[0018]
【The invention's effect】
According to the present invention, a shift operation shift device used in an automatic transmission has a knob portion on one end side, and has a mounting point formed on a part of a shift piece described later as a fulcrum. It swings in the XX direction, which is a certain direction, and the XX in the YY direction perpendicular to the XX direction with the tip formed on the side opposite to the side where the knob is provided as a fulcrum. A shift lever that oscillates so as to have a larger arc angle than the oscillating motion in the direction, and a pin joint coupled to the tip of the shift lever, and the swaying of the shift lever in the XX direction A rod that linearly moves in the axial direction in accordance with a dynamic motion, and a concentric circle around the rod so as to support the rod, and a swinging motion of the shift lever in the YY direction Accordingly, a shift piece formed to rotate about the axis of the rod and the shift piece and the rod are held, and the shift lever swings in the XX and YY directions. A housing that receives the reaction force, and a detent block that is provided in the housing so as to expand in a fan shape in the YY direction and engages with a detent pin that is provided at right angles to the axis of the rod; Since the detent pin provided on the rod is configured to include a spring that applies a predetermined pressing force in the axial direction of the rod so as to constantly press the detent pin on the detent block side, Engagement and release operation with respect to the detent part is formed by movement of the rod in the axial direction. At the same time, the shift operation to the P, R, N, D, and L portions in the detent portion of the detent pin can be formed by the rotational movement of the shift piece around the axis of the rod. The operation in the XX direction and the YY direction can be performed smoothly. As a result, the shift operation feeling in the entire shift apparatus can be improved.
[0019]
In the present invention, the shift piece is formed in a cylindrical shape, and a slit is provided in a part thereof in parallel to the axial direction of the rod, and the inside of the slit is perpendicular to the axial line of the rod. Since the detent pin provided is configured to slide in the axial direction of the rod, the input load between the detent pin and the detent block is only a simple pressing pressure, and the area around the detent block The structure of can now be miniaturized. As a result, the swinging movement angle (arc angle) of the shift lever can be set small, and the entire shift device can be reduced in size and weight.
[0020]
Further, in the present invention, when the detent pin is engaged with the position P of the detent block at the housing or the detent block, the detent pin is detached from the engagement position. Since the lock mechanism for restricting the movement is provided, the P position lock or the R position hold in the shift operation is surely performed, and the safety in the shift operation is improved. Can now.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an overall configuration of the present invention.
FIG. 2 is a perspective view showing the overall configuration of the present invention.
FIG. 3 is a developed perspective view showing a configuration around a detent block and a lock mechanism constituting the main part of the present invention.
FIG. 4 is a perspective view showing a case where the lock mechanism according to the present invention is in a P-lock state.
FIG. 5 is a perspective view showing a case where the locking mechanism according to the present invention is in an R-hold state.
FIG. 6 is a perspective view showing an overall configuration of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shift lever 11 Knob part 12 Tip part 2 Shift piece 21 Clevis bracket 25 Slit 3 Rod 31 Connecting part 4 Spring 5 Detent block 51 Detent part 55 Detent pin 56 Shaft part 6 Locking mechanism 61 Lever 611 U-shaped groove 615 Stopper part 619 One end 66 Spring 7 Housing 71 Flange 75 Opening portion 77 Mounting portion 8 Transmission lever

Claims (1)

It has a knob portion on one end side, and swings in the XX direction which is a fixed direction with an attachment point formed on a part of the shift piece described later as a fulcrum, and the knob portion Using the tip formed on the side opposite to the provided side as a fulcrum, the swinging motion is performed in the YY direction orthogonal to the XX direction so as to have a larger arc angle than the swinging motion in the XX direction. A shift lever that is connected to the tip of the shift lever by a pin joint and linearly moves in the axial direction in accordance with the swinging motion of the shift lever in the XX direction, and the rod It is provided concentrically around the rod so as to be supported, and is formed so as to rotate about the axis of the rod according to the swinging movement of the shift lever in the YY direction. And a housing that holds the shift piece and the rod and receives the reaction force of the shift lever in the XX and YY directions, and is fanned in the YY direction on the housing. A detent block engaged by a detent pin provided at right angles to the axis of the rod, and a detent pin provided on the rod so as to constantly press the detent pin toward the detent block. In a shift device for an automatic transmission comprising a spring that applies a predetermined pressing force in the axial direction of the rod, the shift piece is formed in a cylindrical shape, and a part thereof is parallel to the axial direction of the rod A slit is provided, and a detent provided in the slit at a right angle to the axis of the rod Further, when the detent pin is engaged with a predetermined position of the detent block at the detent block, the detent pin is not detached from the engagement position. A lever that is attached to the detent block so as to be capable of relative rotational movement, and a U-shaped groove formed at the tip of the lever. A shift device for an automatic transmission, characterized in that a lock mechanism comprising a spring that operates so as to always press the side toward the detent portion provided in the detent block is provided .

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