JP2008080908A - Shift operation device for automatic transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent erroneous operation of a shift lever in a shift operation device 1 for an automatic transmission provided with a restriction range of a shift characteristic restricted as compared with the shift characteristic in a D range. <P>SOLUTION: The shift operation device is provided with a detent means 4 for allowing displacement from a P range to the D range and displacement from the D range to the restriction range to position the shift lever at respective shift positions when the operation for displacing the shift lever 3 in an alignment direction of the shift position is performed, and in addition to it, restriction release operation different from the displacement operation is performed; and forbidding means 54g, 61 for forbidding that the shift lever is displaced to the shift position of the restriction range when the displacement operation from the P range to the restriction range is performed in such a state that the restriction release operation is performed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a shift operation device for an automatic transmission.

  2. Description of the Related Art Conventionally, an automatic transmission having an M (manual) range in addition to a D (drive) range as a selection range is known (see, for example, Patent Document 1). The positions are set in the order of P (parking) range, R (reverse) range, N (neutral) range, D range, and M range.

Thus, another range at a position further rearward than the D range (the M range in the example of Patent Document 1, since this range is a speed change characteristic that is more limited than the speed change characteristic of the D range, Hereinafter, in an automatic transmission having a shift position of this range), when the shift lever is displaced from the D range to the limit range, the shift lever is In addition to the displacement operation, the shift lever is normally prevented from being displaced unless a restriction release operation such as a push operation of a shift button is performed (see, for example, Patent Document 2).
JP-A-6-74318 Japanese Utility Model Publication No. 5-52428

  However, in the conventional automatic transmission, when the shift lever is displaced from the P range to the D range, the restriction release operation is required to prevent an erroneous operation or the like. When the shift lever is to be displaced, there is a risk that it will be displaced to the limit range instead of the D range.

  Therefore, there is a need for a mechanism that allows a displacement from the P range to the D range and a displacement from the D range to the limit range while prohibiting the displacement from the P range to the limit range by the restriction release operation.

  The present invention has been made in view of this point, and an object of the present invention is to prevent erroneous operation of the shift lever in a shift operation device for an automatic transmission having a limit range.

  According to one aspect of the present invention, a shift operation device for an automatic transmission includes at least a P range, a D range, and a limit range of a shift characteristic that is more limited than a shift characteristic in the D range. In addition to a shift lever that is displaced to one of the shift positions arranged in the order of the limit range and an operation that displaces the shift lever in the direction in which the shift positions are arranged, a restriction release operation that is different from the displacement operation is performed. In addition, a detent means for allowing the displacement from the P range to the D range and the displacement from the D range to the limit range and positioning the shift lever at each shift position, and the restriction release operation being performed, When the displacement operation from the P range to the limit range is performed, the shift lever moves the shift position of the limit range. And a prohibiting means for prohibiting that displaced.

  According to this configuration, when the shift lever is displaced from the P range to the D range, since the displacement of the shift lever is restricted by the detent means, the restriction release operation must be performed. Similarly, the shift lever is moved from the D range. Even when moving to the limit range, the restriction release operation must be performed. Thereby, an erroneous operation or the like is prevented.

  Further, when the operation of moving the shift lever from the P range to the D range is performed in the state where the restriction release operation is performed, the shift lever is prohibited from being displaced to the shift position of the limit range by the prohibiting means. It will definitely enter the D range. Therefore, an erroneous operation or the like is prevented.

  The detent means is attached to the shift lever and moves together with the shift lever in the shift direction of the shift position, and moves relative to the shift lever in a direction different from the alignment direction in accordance with the deregulation operation. The detent pins extending in the direction in which the shift positions are arranged and a detent plate having an opening having a predetermined shape for guiding the detent pins in a direction different from the direction in which the shift positions are arranged, and the prohibiting means includes And a detent pin that is formed at a position corresponding to the shift position of the limit range in the detent plate, and moves in the direction in which the shift positions are arranged as the shift lever is displaced in a state where the restriction release operation is performed. By combining the shift lever An engagement wall that restricts displacement to the shift position side of the limit range, and a detent pin that is attached to the position of the engagement wall and moves in the direction in which the shift position is aligned, is positioned at the retracted position. In this way, the detent pins are engaged with the engagement wall, while the restriction release operation is performed in a state where the shift lever is located at the shift position of the D range, and the direction is different from the alignment direction of the shift positions. The detent pin that moves to the position of the detent pin is positioned at the engagement position and engaged with the detent pin, thereby restricting the detent pin from engaging with the engagement wall, and the shift lever is in the limit range. And a retracting member that can be displaced to the shift position.

  In this way, when the shift lever is displaced from the P range to the D range in a state in which the restriction is released, the retracting member is positioned at the retracted position so that the detent plate is detented on the engagement wall formed on the detent plate. The pin is engaged, and the shift lever is restricted from moving to the shift position side of the limit range, so that the shift lever surely enters the D range.

  On the other hand, when the restriction release operation is performed in a state where the shift lever is in the shift position of the D range, the retracting member is engaged with the detent pin by being positioned in the engagement position, and the detent pin is engaged with the engagement wall. Is regulated. As a result, the shift lever can be displaced to the shift position of the limit range.

  The retracting member is a swinging plate that is attached to the detent plate so as to be swingable between the engagement position and the retracting position, and includes first and second surfaces against which the detent pin comes into contact. The detent pins that move in the direction in which the shift positions are arranged contact the first surface and swing from the engagement position to the retracted position along with the movement, so that the detent pins are engaged. A detent pin that is engaged with a wall and moves in a direction different from the direction in which the shift positions are arranged is positioned at the engagement position so that the second surface is in contact with the detent pin. It is also possible to restrict further movements.

  In this way, as described above, when the shift lever is displaced from the P range to the D range, the shift lever can be displaced to the limit range simply by attaching the swing plate to the detent plate. On the other hand, when the shift lever is displaced from the D range to the limit range, the displacement is allowed.

  The retracting member is attached to the detent plate so as to be slidable in the alignment direction of the shift position between the engagement position and the retracted position, and the first and second surfaces with which the detent pin abuts are mounted. The detent pins that move in the direction in which the shift positions are arranged are brought into contact with the first surface, and are moved by sliding from the engagement position to the retracted position along with the movement. While the detent pin is engaged with the engagement wall, the second surface is in contact with the detent pin at the engagement position with respect to the detent pin that moves in a direction different from the direction in which the shift positions are arranged. Thus, further movement of the detent pin may be restricted.

  In this way, as described above, when the shift lever is displaced from the P range to the D range, it is prohibited to displace the shift lever to the limit range simply by attaching the slide plate to the detent plate. On the other hand, when the shift lever is displaced from the D range to the limit range, the displacement is allowed.

  The prohibiting means is formed at a position corresponding to the shift position of the limit range in the detent plate, and moves in the direction in which the shift positions are arranged as the shift lever is displaced in the state where the restriction release operation is performed. By engaging with the detent pin, the engagement wall that restricts the shift lever from being displaced toward the shift position of the limit range and the detent pin are attached in a direction opposite to the movement direction associated with the restriction release operation. The return spring has a two-stage load characteristic in which the reaction force changes from small to large with respect to an increase in the amount of movement of the detent pin associated with the deregulation operation, When the shift lever is displaced from the P range to the D range, the operation force of the restriction release operation is increased. When the shift lever is displaced from the D range to the limit range, the amount of movement of the detent pin is increased and the detent pin is engaged with the engagement wall. It is good also as making the movement amount of the said detent pin small by making operation force small, and not engaging the said detent pin with the said engagement wall.

  By doing so, two types of operations, that is, an operation with a relatively large operation force and an operation with a relatively small operation force are performed as the restriction release operation, and the shift lever is moved from the P range to the D range. When the displacement operation is performed to the range, by increasing the operation force of the restriction release operation, the displacement to the D range is possible, while the displacement to the limit range is performed by the engagement of the detent pin and the engagement wall. It is forbidden.

  On the other hand, when the shift lever is displaced from the D range to the limit range, the detent pin and the engagement wall are prevented from engaging by reducing the operation force of the restriction release operation, thereby limiting the shift lever. It is possible to shift to the shift position of the range.

  Here, the return spring may be composed of two long and short coil springs nested.

  The return spring may be a coil spring whose pitch is changed from large to small at an intermediate position.

  By doing so, the return spring has a two-stage load characteristic in which the reaction force changes from small to large as the amount of movement of the detent pin increases. When the shift operation from the D range to the D range is prohibited, the shift lever is allowed to be shifted to the shift position of the limit range while the shift lever is displaced from the D range to the limit range. .

  The prohibiting means is attached at a position corresponding to the shift position of the limit range on the detent plate, and moves in the direction in which the shift positions are arranged as the shift lever is displaced in a state where the restriction release operation is performed. The detent pin is positioned at the engagement position and engaged with the detent pin, thereby restricting further movement of the detent pin and shifting the shift lever to the shift position of the limit range. On the other hand, the detent pins that move in a direction different from the direction in which the shift positions are arranged in accordance with the deregulation operation in a state where the shift lever is located at the shift position of the D range are in the retracted position. The shift lever is not engaged with the detent pin. It includes an engagement member that allows displacement shift position of the range may be.

  In this way, when the shift lever is displaced from the P range to the D range in a state where the restriction is released, the retracting member is located at the engagement position and is engaged with the detent pin. Displacement to the shift position side of the limit range is restricted, and the shift lever surely enters the D range.

  On the other hand, when the restriction release operation is performed in a state where the shift lever is positioned at the shift position of the D range, the retracting member is positioned at the retracted position so that it does not engage with the detent pin. Can be displaced.

  The detent means includes a detent plate in which a guide groove having a predetermined shape for guiding a rod of the shift lever is formed, and the guide groove causes the shift lever to be orthogonal to the arrangement direction of the shift positions as the restriction release operation. The shift lever may be formed so as to be displaced in the direction in which the shift positions are arranged while being displaceable in the direction in which the shift positions are arranged.

  In other words, the present invention is also applicable to a so-called column-type speed change operation device that is arranged at the position of the steering shaft, for example, in which the shift lever displacement operation is regulated by the shift lever itself instead of the detent pin.

  As described above, according to the present invention, while the shift lever is allowed to be displaced from the D range to the limit range, the shift lever is moved to the limit range by the prohibiting means when displaced from the P range to the D range. Since displacement to the shift position is prohibited, erroneous operations and the like can be reliably prevented.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

(Embodiment 1)
1 and 2 schematically show a shift operation device 1 for an automatic transmission according to Embodiment 1 of the present invention. This shift operation device 1 is a so-called floor type attached to a floor 21 of a vehicle, a shift lever 3 supported so as to be swingable in the vehicle front-rear direction with respect to a base plate 5 fixed to the floor 21, and the shift lever And a detent mechanism 4 that regulates the swing of the movement 3 in accordance with the shift position.

  The base plate 5 is fixed to the floor 21 and has a plate main body 50 having an opening 51 at the center, and a U-shaped lever support 52 having an open upper portion extending downward from both sides of the opening 51 of the plate main body 50. , And a detent plate 53 integrally projecting upward from one side of the opening 51. As shown in FIG. 3, the detent plate 53 has a parking (P) range engaging portion 54a to which a detent pin 35 described later is engaged corresponding to each shift position of the shift lever 3 aligned in the vehicle longitudinal direction. , A reverse (R) range engaging portion 54b, a neutral (N) range engaging portion 54c, a drive (D) range engaging portion 54d, and a manual (M) range engaging portion 54e. Is formed. The plate body 50, the lever support portion 52, and the detent plate 53 are integrally formed of a resin material.

  The shift lever 3 has a separate structure including an upper lever member 31 having a knob 32 and a lower lever member 36.

  The upper lever member 31 is formed in a tubular shape from an iron material, and the upper lever member 31 is provided with the knob 32 having a shift button 33 at the upper end thereof. A shift restricting rod 34 that is moved up and down via a cam mechanism (not shown) or the like is provided. A long hole-shaped through hole 31a extending in the axial direction is formed in the lower portion of the upper lever member 31, and a detent pin that protrudes outward through the through hole 31a in the lower portion of the restriction rod 34. 35 is provided.

  The lower lever member 36 includes a boss portion 37 that holds and couples the lower portion of the upper lever member 31, and a cylindrical bearing portion 38 formed at the lower portion of the boss portion 37. And the bearing part 38 is integrally shape | molded by the resin material. The bearing portion 38 is attached to the lever support portion 52 of the base plate 5 by a support shaft 39 so as to be swingable in the vehicle front-rear direction.

  Further, a portion of the boss portion 37 that overlaps with the upper lever member 31 is formed with a long hole-like through hole 37a extending in the vertical direction at a position facing the through hole 31a, and the shift restricting rod 34 is formed. The detent pin 35 provided at the lower portion of the detent pin 35 protrudes outward through the through holes 31a and 37a, and the projecting portion of the detent pin 35 is engaged with the detent plate 53 when the shift button 33 is not operated. It is adapted to be engaged with any one of the joining portions 54a to 54e. Thus, the detent mechanism 4 is constituted by the detent pin 35 and the detent plate 53.

  Inside the lower lever member 36, there is disposed a return spring 56 whose upper end abuts on the lower end of the restriction rod 34 and urges the restriction rod 34 and the detent pin 35 upward.

  1 and 2, reference numeral 55 denotes an indicator panel that covers the lower lever member 36 and the detent plate 53. The panel 55 has a guide groove 55a in the shift direction of the shift lever 3 (vehicle longitudinal direction). The upper lever member 31 protrudes upward through the guide groove 55a. Further, the lower lever member 36 is connected to an automatic transmission (not shown).

  Next, the configuration of the detent plate 53 will be described in more detail with reference to FIG. As described above, the detent plate 53 is formed with the opening 54 having a predetermined shape with which the detent pin 35 is engaged. The opening 54 includes the P range engaging portion 54a, the R range engaging portion 54b, It includes an N range engaging portion 54c, a D range engaging portion 54d, and an M range engaging portion 54e.

  The P range engaging portion 54a is located at the front end of the detent plate 53 in the vehicle front-rear direction. The P range engaging portion 54a is wider than the diameter of the detent pin 35 and is centered on the support shaft 39. It is formed in a groove shape extending outward in the radial direction. For the sake of simplicity, the radial direction will be referred to as the vertical direction, the outer side being referred to as the upper side and the inner side as the lower side. Therefore, when shifting the shift lever 3 from the P range to another range, it is necessary to push the shift button 33 to displace the detent pin 35 downward, and to move the shift lever 3 to a range other than the P range. Also when moving from the P range to the P range, it is necessary to push the shift button 33 to displace the detent pin 35 downward.

  The R range engaging portion 54b is adjacent to the rear position in the vehicle front-rear direction with respect to the P range engaging portion 54a, and communicates with the lower portion of the P range engaging portion 54a via the communication portion 54f. The height in the vertical direction is lower than that of the P range engaging portion 54a.

  The N range engaging portion 54c is adjacent to the rear position in the vehicle front-rear direction with respect to the R range engaging portion 54b, and the height in the vertical direction is higher than that of the R range engaging portion 54b. Therefore, when the shift lever 3 is displaced from the R range to the N range, it is not necessary to push the shift button 33. However, when the shift lever 3 is displaced from the N range to the R range, the shift button 33 is pushed and operated. The detent pin 35 needs to be displaced downward.

  The D range engaging portion 54d is continuous with the N range engaging portion 54c at a rear position in the vehicle front-rear direction with respect to the N range engaging portion 54c, and the height in the vertical direction is the N range engaging portion. The height is the same as the portion 54c. Therefore, when the shift lever 3 is displaced from the N range to the D range and from the D range to the N range, it is not necessary to press the shift button 33.

  The M range engaging part 54e is located adjacent to the rear position in the vehicle front-rear direction than the D range engaging part 54d, and the height in the vertical direction is lower than that of the D range engaging part 54d. It is set to the same height as the R range engaging portion 54b. Accordingly, when the shift lever 3 is displaced from the D range to the M range, it is necessary to press the shift button 33, whereas when the shift lever 3 is displaced from the M range to the D range, the shift button 3 is required. There is no need to press 33.

  Thus, an engaging wall 54g is formed at the lower portion of the M range engaging portion 54e, and when the shift button 33 is pushed, the lower position in the opening 54 is changed from the P range to the D range direction. When the engagement wall 54g is engaged with the detent pin 35 (see the arrow of the two-dot chain line in FIG. 3), the shift lever 3 is prohibited from moving to the shift position of the M range. I am doing so.

  Further, a swinging plate 61 that can swing around a predetermined swinging fulcrum 61c is attached to the position of the engagement wall 54g in the detent plate 53. As will be described later, the rocking plate 61 is a plate having a substantially triangular shape including a first surface 61a and a second surface 61b that come into contact with the detent pin 35, and the detent plate 53 via a rocking fulcrum 61c. 3, and the guide pin 61 d is guided in the guide groove 61 e formed in the detent plate 53, so that the swing plate 61 is indicated by an engagement position indicated by a solid line and a two-dot chain line in FIG. 3. It swings between the retracted positions.

  The swing plate 61 is also urged to a posture shown by a solid line in FIG. 3 by urging means (not shown), and in this posture, the first surface 61a has a lower position of the opening 54 at a position P. The second surface 61b of the detent pin 35 that moves in the direction of the D range from the range (see the two-dot chain line arrow in FIG. 3) is tilted from above in the D range engaging portion 54d. The detent pin 35 (refer to the solid line arrow in FIG. 3) that moves downward is opposed to the detent pin 35 at a position above the engagement wall 54g.

  Next, the shifting operation in the shifting operation device 1 having the above-described configuration will be described. First, when the shift lever 3 is displaced from the P range to another range, the shift button 33 is pushed. By doing so, the detent pin 35 moves downward, and the detent pin 35 becomes movable through the communication portion 54f, so that the shift lever 3 can be swung. In this case, although the shift lever 3 can be displaced to the R range, N range, and D range, the displacement operation beyond the D range is restricted by the detent pin 35 engaging with the engagement wall 54g. . That is, as indicated by a two-dot chain line in FIG. 3, the detent pin 35 that moves the lower position of the opening 54 from the P range to the D range comes into contact with the first surface 61a of the swing plate 61, thereby swinging. The moving plate 61 swings clockwise and changes from a solid line state to a two-dot chain line state (retracted position) in FIG. At this time, the upper end of the swinging plate 61 is positioned at a communication portion between the D range engaging portion 54d and the M range engaging portion 54e. Thus, when the detent pin 35 engages with the engagement wall 54g, the displacement operation exceeding the D range, that is, the operation directly moving from the P range to the M range is restricted. In this case, the shift lever 3 is It is definitely positioned in the D range.

  On the other hand, the shift button 33 is pushed and operated when the shift lever 3 is displaced from the D range to the M range. By doing so, the detent pin 35 moves downward in the D range engaging portion 54d as shown by a solid line in FIG. 3, but the detent pin 35 abuts against the second surface 61b of the swing plate 61. This restricts the detent pin 35 from moving further downward. Thus, the detent pin 35 is prevented from engaging with the engaging wall 54g, and the operation of displacing the shift lever 3 to the M range becomes possible.

  As described above, the engagement wall 54g is formed on the detent plate 53, and the shift plate 3 is allowed to be displaced from the D range to the M range by attaching the swing plate 61 to the position of the engagement wall 54g. On the other hand, it is possible to prohibit the shift lever 3 from being directly displaced from the P range to the M range, and the reliability of the operation can be improved.

(Modification)
FIG. 4 shows a modification according to the first embodiment, and the shape of the opening 54 in the detent plate 53 is the same as that of the detent plate 53 shown in FIG. In this modification, instead of the swing plate 61, a slide plate 62 that is slidable in the vehicle front-rear direction (transmission operation direction) is attached to the detent plate 53.

  As will be described later, the slide plate 62 is a plate having a substantially rectangular shape including a first surface 62a and a second surface 62b that come into contact with the detent pin 35, and is located at the position of the engagement wall 54g in the detent plate 53. As shown by a solid line in FIG. 4, the engagement position protrudes forward in the vehicle front-rear direction from the engagement wall 54g, and retracts backward as shown by a two-dot chain line in FIG. It is slidable between a retracted position that does not protrude beyond the engaging wall 54g.

  The slide plate 62 is also urged to the engagement position by an urging means (not shown). In this state, the first surface 62a moves the lower position of the opening 54 from the P range to the D range direction. The detent pin 35 (refer to the two-dot chain line arrow in FIG. 4) that moves is opposed to the moving detent pin 35, and the second surface 61b of the detent pin moves from the upper side to the lower side in the D-range engaging portion 54d. The pin 35 (see the solid line arrow in FIG. 4) is in a state of being opposed to each other at a position above the engagement wall 54g.

  Next, the shifting operation in the shifting operation device 1 having the above-described configuration will be described. First, when the shift lever 3 is displaced from the P range to another range, the shift button 33 is pushed. By doing so, the detent pin 35 moves downward, and the detent pin 35 becomes movable through the communication portion 54f, so that the shift lever 3 can be swung. In this case, although the shift lever 3 can be displaced to the R range, N range, and D range, the displacement operation beyond the D range is restricted by the detent pin 35 engaging with the engagement wall 54g. . That is, as shown by a two-dot chain line in FIG. 4, the detent pin 35 that moves the lower position of the opening 54 from the P range to the D range comes into contact with the first surface 62 a of the slide plate 62, thereby 62 slides backward to change from a solid line state to a two-dot chain line state (retracted position). Thus, when the detent pin 35 is engaged with the engagement wall 54g, the displacement operation exceeding the D range, that is, the operation of directly displacing from the P range to the M range is restricted. In this case, the shift lever 3 is surely positioned in the D range.

  On the other hand, the shift button 33 is pushed and operated when the shift lever 3 is displaced from the D range to the M range. By doing so, as shown by a solid line in FIG. 4, the detent pin 35 moves downward in the D range engaging portion 54 d, but the detent pin 35 abuts on the second surface 62 b of the slide plate 62, This restricts the detent pin 35 from moving further downward. Thus, the detent pin 35 is prevented from engaging with the engaging wall 54g, and the operation of displacing the shift lever 3 to the M range becomes possible.

  Thus, while forming the engaging wall 54g in the detent plate 53 and attaching the slide plate 62 to the position of the engaging wall, the shift lever 3 is allowed to be displaced from the D range to the M range, Direct displacement of the shift lever 3 from the P range to the M range can be prohibited, and the reliability of the operation can be improved.

(Embodiment 2)
FIG. 5 shows the detent plate 53 and the detent pin 35 of the speed change operation device 1 according to the second embodiment. The shape of the opening 54 in the detent plate 53 is the same as that of the detent plate 53 shown in FIG.

  In the second embodiment, the return spring 56 of the detent pin 35 is constituted by first and second return springs 56a and 56b.

  Among these, the first return spring 56a is a compression spring having a relatively long length, and its upper end is always in contact with the restriction rod 34.

  On the other hand, the second return spring 56b is a compression spring having a relatively short length, and is inserted into the first return spring 56a. Thus, the upper end of the second return spring 56b is set to be near the upper end of the engagement wall 54g.

  In this way, by configuring the return spring 56 by the first and second nested return springs 56a and 56b, the reaction force is reduced as the amount of movement of the detent pin 35 increases. When the operating characteristic of the shift button 33 is a relatively light operating force that receives a reaction force from only the first return spring 56a, the shift button 33 is further pressed and operated. This is a two-stage characteristic with a relatively heavy operating force that receives reaction forces from both the first and second return springs 56a and 56b.

  Next, the shifting operation in the shifting operation device 1 having the above-described configuration will be described. First, when the shift lever 3 is displaced from the P range to another range, the shift button 33 is pressed strongly. By doing so, the detent pin 35 moves downward, and the detent pin 35 becomes movable through the communication portion 54f, so that the shift lever 3 can be swung. In this case, although the shift lever 3 can be displaced to the R range, N range, and D range, the displacement operation beyond the D range is restricted by the detent pin 35 engaging with the engagement wall 54g. . That is, an operation of directly displacing from the P range to the M range is restricted, and in this case, the shift lever 3 is reliably positioned in the D range.

  On the other hand, also when the shift lever 3 is displaced from the D range to the M range, the shift button 33 is pushed and operated. At this time, the shift button 33 is lightly pushed. By doing so, the detent pin 35 moves downward in the D range engaging portion 54d, but the detent pin 35 is positioned above the engaging wall 54g, and the detent pin 35 is engaged. Engagement with the wall 54g is avoided. Thus, the operation of displacing the shift lever 3 to the M range becomes possible.

  Thus, by forming the engaging wall 54g on the detent plate 53 and setting the load characteristic of the return spring 56 in two stages, two types of operations can be performed as the pressing operation of the shift button 33, and the shift lever An operation for displacing 3 from the P range to the D range and an operation for displacing the 3 from the D range to the M range can be distinguished. Accordingly, it is possible to prohibit the shift lever 3 from being displaced from the D range to the M range while allowing the shift lever 3 to be directly displaced from the P range to the M range, thereby improving the reliability of the operation. it can.

(Modification)
FIG. 6 shows a modified example according to the second embodiment. In this modified example, a coil spring 56 c whose pitch is changed at an intermediate position is adopted as the return spring 56. That is, the return spring 56c has a relatively wide pitch at the upper end portion and a relatively narrow pitch at the lower end portion, and the position where the pitch changes is at the upper end of the engagement wall 54g. It is set near.

  This also changes the reaction force from small to large in accordance with the amount of movement of the detent pin 35, and the operation characteristic of the shift button 33 is relatively small in the amount of push operation of the shift button 33. There are two stages of characteristics, that is, a light operating force and a case where the shift button 33 is further pressed to become a relatively heavy operating force.

  Accordingly, as in the second embodiment, two types of operations can be performed as the pressing operation of the shift button 33, the operation for displacing the shift lever 3 from the P range to the D range, and the displacement from the D range to the M range. It can be distinguished from the operation when Accordingly, it is possible to prohibit the shift lever 3 from being displaced from the P range to the M range while allowing the shift lever 3 to be displaced from the D range to the M range, thereby improving the reliability of the operation. Can do.

(Embodiment 3)
FIG. 7 shows the detent plate 53 and the detent pin 35 of the speed change operation device 1 according to the third embodiment. The opening 54 of the detent plate 53 has a P range engaging portion 54a, an R range engaging portion 54b, an N range engaging portion 54c, a D range engaging portion 54d, and an M range engaging portion 54e. The engagement wall 54g is not provided.

  In the third embodiment, the engagement member 63 is attached to a position corresponding to the M range engagement portion 54e so as to be rotatable around a predetermined rotation center. As will be described later, the engaging member 63 protrudes to a position overlapping the contact portion 63a that contacts the stopper 63c and the opening 54 of the detent plate 53 in the vehicle width direction, and engages with the detent pin 35. It is formed in a substantially L shape having a pawl portion 63b, and is urged by an urging means (not shown) so as to be in a posture shown by a solid line in FIG. A stopper 63c with which the contact portion 63a of the engagement member 63 contacts is attached to the opening edge of the detent plate 53, and the contact portion 63a of the engagement member 63 contacts with this stopper 63c. Defines the limit position when the engaging member 63 rotates in the clockwise direction.

  The engaging claw 63b has a substantially triangular shape, and when the engaging member 63 is biased by the biasing means (solid line in FIG. 7), the lower position of the opening 54 is changed from the P range to the D range. The detent pin 35 (see the one-dot chain line arrow in FIG. 7) that moves in the range direction is inclined, and the detent pin 35 (indicated by two in FIG. 7) moves downward from above in the D range engaging portion 54d. It is also inclined with respect to the dotted line arrow).

  Next, the shifting operation in the shifting operation device 1 having the above-described configuration will be described. First, when the shift lever 3 is displaced from the P range to another range, the shift button 33 is pushed. By doing so, the detent pin 35 moves downward, and the detent pin 35 becomes movable through the communication portion 54f, so that the shift lever 3 can be swung. In this case, although it is possible to displace the shift lever 3 to the R range, N range, and D range, the lower position of the opening 54 is moved from the P range to the D range direction, as shown by a dashed line in FIG. The detent pin 35 to be brought into contact with the engaging claw 63b of the engaging member 63 causes the engaging member 63 to rotate clockwise. Then, when the abutting portion 63a abuts against the stopper 63c, the engaging member 63 is changed from the solid line state in FIG. In this way, the detent pin 35 and the engaging claw 63b are engaged with each other, so that the displacement operation exceeding the D range, that is, the operation directly displacing from the P range to the M range is restricted. The lever 3 is reliably positioned in the D range.

  On the other hand, the shift button 33 is pushed and operated when the shift lever 3 is displaced from the D range to the M range. By doing so, the detent pin 35 moves downward in the D range engaging portion 54d as shown by a two-dot chain line in FIG. 7, and this detent pin 35 comes into contact with the engaging claw portion 63b, As a result, the engaging member 63 is rotated counterclockwise to change from the solid line state to the two-dot chain line state (retracted position). Therefore, the detent pin 35 is not engaged with the engaging claw 63b, and the operation of displacing the shift lever 3 to the M range becomes possible.

  Thus, by attaching the engaging member 63 to the detent plate 53, the shift lever 3 is allowed to be displaced from the D range to the M range while the shift lever 3 is directly displaced from the P range to the M range. It can be prohibited and the certainty of operation can be improved.

(Other embodiments)
In addition, this invention includes not only the said embodiment but other various embodiment. For example, in each of the above-described embodiments, the detent means 4 is configured by the detent pin 35 and the detent plate 53. For example, although not illustrated, instead of the detent pin, as in a so-called column-type shift operation device. The detent means may be constituted by a detent plate in which guide grooves for guiding the shift lever rods themselves in the shift position arrangement direction and the direction orthogonal to the direction are arranged. In this configuration, by making the detent plate the same configuration as each of the detent plates 53, it is possible to obtain the same effect as described above. As a form corresponding to the second embodiment in the column-type speed change operation device, for example, if the configuration of the second embodiment is used for a return spring that biases the shift lever in a direction orthogonal to the direction in which the shift positions are arranged. Good.

  In the above embodiment, the present invention is applied to a shift operation device for an automatic transmission having a P range, an R range, an N range, a D range, and an M range. Widely applied to a shift operation device for an automatic transmission having a shift characteristic range that is more limited than the shift characteristic and whose shift position is located on the opposite side of the P range across the D range. It goes without saying that it is possible.

  Further, the shift operation device of the present invention has no limitation on the configuration of the automatic transmission as long as the driver selects each range by operating the shift lever.

  As described above, the present invention is useful as a shift operation device for an automatic transmission mounted on an automobile or the like because the certainty of the shift operation is improved.

It is the schematic of the gear shift operating device of an automatic transmission. It is the schematic of the gear shift operating device of an automatic transmission. It is a side view which shows the detent plate of the speed change operation apparatus which concerns on Embodiment 1. FIG. FIG. 6 is a side view showing a detent plate of a speed change operating device according to a modification of the first embodiment. It is a side view which shows the detent plate and return spring of the speed change operation apparatus which concern on Embodiment 2. It is a side view which shows the detent plate and return spring of the speed change operation apparatus which concern on the modification of Embodiment 2. It is a side view which shows the detent plate of the speed change operation apparatus which concerns on Embodiment 3.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shifting operation apparatus 2 Shift lever 4 Detent means 35 Detent pin 53 Detent plate 54 Opening part 54g Engagement wall (prohibition means)
56 Return spring 56a First return spring (prohibiting means)
56b Second return spring (prohibiting means)
56c Return spring (prohibited means)
61 Swing plate (retraction member, prohibition means)
61a, 62a First surface 61b, 62b Second surface 62 Slide plate (retracting member, prohibiting means)
63 engaging member (prohibiting means)

Claims (9)

It includes at least a P range, a D range, and a shift range limited to a shift characteristic that is more limited than the shift characteristics in the D range, and is displaced to one of the shift positions arranged in the order of the P range, the D range, and the limit range. A shift lever,
In addition to the operation of displacing the shift lever in the direction in which the shift positions are arranged, when a restriction release operation different from the displacement operation is performed, the displacement from the P range to the D range and the displacement from the D range to the limit range Detent means for positioning the shift lever at each shift position,
And a prohibiting means for prohibiting the shift lever from being displaced to the shift position of the limit range when the displacement operation from the P range to the limit range is performed in the state where the restriction release operation is performed. The automatic transmission gear shifting operation device. The shift operation device according to claim 1, wherein
The detent means is
A detent pin that is attached to the shift lever and moves with the shift lever in the alignment direction of the shift position, and moves relative to the shift lever in a direction different from the alignment direction with the restriction release operation;
A detent plate that extends in the direction in which the shift positions are arranged and has a predetermined shape for guiding the detent pins in a direction different from the direction in which the shift positions are arranged; and
The prohibition means is
Engage with a detent pin that is formed at a position corresponding to the shift position of the limit range on the detent plate and moves in the direction in which the shift position is aligned as the shift lever is displaced in the state where the restriction release operation is performed. An engagement wall for restricting the shift lever from being displaced toward the shift position side of the limit range,
A detent pin that is attached to the position of the engagement wall and moves in the direction in which the shift positions are arranged is positioned at a retracted position so that the detent pin is engaged with the engagement wall while the shift is performed. With respect to a detent pin that moves in a direction different from the direction in which the shift positions are arranged as the restriction is released while the lever is positioned at the shift position of the D range, And a retraction member that regulates engagement of the detent pin with the engagement wall by engaging to allow the shift lever to be displaced to a shift position of the limit range. apparatus. The shift operation device according to claim 2, wherein
The retracting member is a swinging plate that is attached to the detent plate so as to be swingable between the engagement position and the retracting position, and includes first and second surfaces against which the detent pin comes into contact. The detent pins that move in the direction in which the shift positions are arranged contact the first surface and swing from the engagement position to the retracted position along with the movement, so that the detent pins are engaged. A detent pin that is engaged with a wall and moves in a direction different from the direction in which the shift positions are arranged is positioned at the engagement position so that the second surface is in contact with the detent pin. A shift operation device that restricts further movement of the motor. The shift operation device according to claim 2, wherein
The retracting member is attached to the detent plate so as to be slidable in the alignment direction of the shift position between the engagement position and the retracted position, and the first and second surfaces with which the detent pin abuts are mounted. The detent pins that move in the direction in which the shift positions are arranged are brought into contact with the first surface, and are moved by sliding from the engagement position to the retracted position along with the movement. While the detent pin is engaged with the engagement wall, the second surface is in contact with the detent pin at the engagement position with respect to the detent pin that moves in a direction different from the direction in which the shift positions are arranged. A shift operation device that restricts further movement of the detent pin. The shift operation device according to claim 1, wherein
The detent means is
A detent pin that is attached to the shift lever and moves with the shift lever in the alignment direction of the shift position, and moves relative to the shift lever in a direction different from the alignment direction with the restriction release operation;
A detent plate that extends in the direction in which the shift positions are arranged and has a predetermined shape for guiding the detent pins in a direction different from the direction in which the shift positions are arranged; and
The prohibition means is
Engage with a detent pin that is formed at a position corresponding to the shift position of the limit range on the detent plate and moves in the direction in which the shift position is aligned as the shift lever is displaced in the state where the restriction release operation is performed. An engagement wall for restricting the shift lever from being displaced toward the shift position side of the limit range,
A return spring that urges the detent pin in a direction opposite to the moving direction associated with the deregulation operation,
The return spring has a two-stage load characteristic in which the reaction force changes from small to large with respect to an increase in the amount of movement of the detent pin accompanying the deregulation operation, and the shift lever is moved from the P range to the D range. When displacing to the range, the detent pin is engaged with the engagement wall by increasing the amount of movement of the detent pin by increasing the operation force of the deregulation operation, while the shift lever Is moved from the D range to the limit range, the amount of movement of the detent pin is reduced by reducing the operation force of the deregulation operation, and the detent pin is engaged with the engagement wall. Shifting operation device that prevents it from occurring. The shift operation device according to claim 5, wherein
The return spring is a speed change operation device composed of two long and short coil springs nested. The shift operation device according to claim 5, wherein
The return spring is a shift operation device comprising a coil spring whose pitch is changed from large to small at an intermediate position. The shift operation device according to claim 1, wherein
The detent means is
A detent pin that is attached to the shift lever and moves together with the shift lever in the alignment direction of the shift position, and moves relative to the shift lever in a direction different from the alignment direction along with the restriction release operation;
A detent plate that extends in the direction in which the shift positions are arranged and has a predetermined shape for guiding the detent pins in a direction different from the direction in which the shift positions are arranged; and
The prohibiting means is attached at a position corresponding to the shift position of the limit range on the detent plate, and moves in the direction in which the shift positions are arranged as the shift lever is displaced in a state where the restriction release operation is performed. The detent pin is positioned at the engagement position and engaged with the detent pin, thereby restricting further movement of the detent pin and shifting the shift lever to the shift position of the limit range. On the other hand, the detent pins that move in a direction different from the direction in which the shift positions are arranged in accordance with the deregulation operation in a state where the shift lever is located at the shift position of the D range are in the retracted position. The shift lever is not engaged with the detent pin. Gear shifting operation device includes an engagement member that allows displacement shift position of the range. The shift operation device according to claim 1, wherein
The detent means includes a detent plate in which a guide groove having a predetermined shape for guiding the rod of the shift lever is formed,
The guide groove is formed to displace the shift lever in the shift position alignment direction while allowing the shift lever to be displaced in a direction orthogonal to the shift position alignment direction as the restriction release operation. Shifting operation device.

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