JP4973340B2 - Manual plate structure for vehicle transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manual plate structure of a transmission for a vehicle capable of precisely regulating a working area of an inhibitor switch in simple structure, having a small number of parts and easy to assemble. <P>SOLUTION: This manual plate structure of the transmission for the vehicle is constituted of and furnished with a container body (casing) to cover an outer peripheral part of the transmission for the vehicle, a manual plate shaft provided through the container body on the container body and revolved by a shift control lever, the inhibitor switch mounted on the manual plate shaft and to detect speed changing operation by the shift control lever and a stopper making contact with a stiffening rib formed on an inner surface of the container body and to engage revolution of the manual plate shaft in the working area of the inhibitor switch. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a manual plate structure in a vehicle transmission that has a simple structure and an accurate stop position of a stopper.

  Vehicles equipped with an automatic transmission are equipped with an inhibitor switch to prevent sudden start when the engine is started, and the engine except when the automatic transmission is set to the N (neutral) range or P (parking) range. Is set not to start. In addition, the manual plate that is mounted coaxially with the inhibitor switch has a stopper function so that even if the shift control lever is overstroked, the inhibitor switch is forced to operate beyond the operating range of the inhibitor switch. So that there is nothing to do.

For example, in Japanese Patent Application Laid-Open No. 2003-104083, when the control shift lever is set to the P range and the first speed range, the end portions provided on the manual plate abut against the stopper portions, respectively, and the manual plate shaft has a maximum rotation angle. The invention is described in which it is restricted so as not to rotate beyond the range.
JP 2003-104083 A

  However, in the above example, since the end portion of the manual plate is brought into contact with the stopper portion formed on the outer wall of the transmission, it is necessary to separately form the stopper portion inside the transmission, which takes time. In addition, the outer wall of the transmission is usually configured by combining several members, and when the stopper portion is provided separately on different members constituting the outer wall, the stopper portion may be different if the outer wall is assembled. The position also changed, and there was a possibility that the stop position at the stopper part would be beyond the allowable range of the inhibitor switch.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a manual plate structure for a vehicle transmission that solves the above-mentioned problems, accurately regulates the operating range of the inhibitor switch, reduces the number of parts, and is easy to assemble. To do.

Manual plate structure of an embodiment according to the present invention for solving the above SL problems is configured as follows.

Container covering the outer peripheral portion of the vehicle dual transmission and (casing), to the container body, provided through the container body, the manual plate shaft is rotated by the shift control lever, the outer surface of said container body in attached to the manual plate shaft, said a inhibitor switch for detecting the shift operation by the shift control lever, attached to the manual plate shaft on the inner surface side of the container body, connected to the detent part and the parking rod of click feeling for generating A manual plate having an actuating lever portion,
A holding part that protrudes from the inner surface of the container body to hold the manual plate shaft rotatably, and an outer peripheral surface of the holding part and an outer wall of the container body are connected to the inner surface of the container body. A reinforcing rib formed, and a stopper that contacts the reinforcing rib and locks the rotation of the manual plate shaft within the operating range of the inhibitor switch ,
The stopper is provided between the detent portion and the operating lever and is provided at two positions on the manual plate. Each stopper is located at a permissible limit position for both forward and reverse rotation of the inhibitor switch. Each abuts on the back.

  The reinforcing rib is not limited to the rib of the holding portion that holds the manual plate shaft, and may be formed near the manual plate shaft. Further, the number of ribs for contacting the stopper is not limited to 1, and a plurality of ribs may be used. The stopper is not limited to the one provided on the manual plate, but may be formed separately from the manual plate and attached to the manual plate shaft.

Before SL container body, a casting, the die cutting direction coaxial with said vessel body, said manual plate holding unit is provided for holding the shaft, the reinforcing ribs, through the center of the holding portion, the holding portion the outer peripheral surface and the holding portion and the outer wall which is provided substantially parallel to the line connecting the shortest distance may be a that is formed in the container body integral. The reinforcing ribs may be formed simultaneously with the casting of the container body .

Prior Symbol transmission includes a parking gear, the manual plate, the through parking rod connected to the locking mechanism of the parking gear, the parking operates said locking mechanism in one of the allowable limit position gear Ru locked.

Before Symbol transmission, Ru reduction gear der, which is mounted on an electric vehicle.

The manual plate structure according to the present invention has the following effects.
Reinforcing ribs required for strength can be used for the container body (casing) as a member where the stopper abuts and the manual plate shaft is locked, reducing the manufacturing process and the number of parts, and reducing manufacturing costs. Can be reduced. Since the stopper abuts on both the front and back side surfaces of the reinforcing rib, it is possible to accurately set both the forward and reverse rotation stop positions of the inhibitor switch without being affected by the assembly accuracy of the container body.

An embodiment of a manual plate structure of a vehicle transmission according to the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic configuration of a reduction gear 10 used as a transmission of an electric vehicle. The speed reducer 10 is connected to a vehicle drive motor (not shown), and reduces the drive force from the vehicle drive motor by a gear group (not shown) incorporated therein, and has a difference therein. The left and right axles (not shown) are driven via a moving gear (not shown).

  The speed reducer 10 has casings 12 (left) and 13 (right) as casings (the casing 13 (right) is partially shown by a two-dot chain line in FIG. 2) on the outer peripheral portion, and the various gears described above. A group is assembled inside. The casings 12 and 13 are cast products made of aluminum (alloy) or the like, and the left-right direction in FIG. As shown in FIG. 2, the casing 12 is a saddle type having an outer wall 16 around the vertical wall 14, and the casings 12 and 13 are bolted together at a vertical center mating surface. FIG. 2 is a partially omitted cross-sectional view taken along the line F2-F2 in FIG. 1, and the casing 13 has substantially the same shape as the casing 12. FIG.

  As shown in FIG. 3, the casing 12 has a holding portion 18 formed at the top thereof, and a manual plate shaft 20 is attached via the holding portion 18. The holding portion 18 is cylindrical and penetrates the vertical wall 14 and is formed integrally with the casing 12. The holding portion 18 is formed coaxially with the die-cutting direction of the casing 12, and the reinforcing rib 22 is formed between the outer surface of the holding portion 18 and the outer wall 16 along the shortest distance line passing through the center of the holding portion 18. It is formed along.

  The reinforcing rib 22 is formed to have a height that a stopper 35, which will be described later, contacts, and is formed in the same manner as the other ribs when the casing 12 is cast. In FIG. 1, a gear group, a normal rib, and the like are omitted. Even when the reinforcing rib 22 is not provided with the manual plate structure according to the present invention, the normal reduction gear 10 is provided for the purpose of reinforcing the holding portion 18 and between the holding portion 18 and the outer wall 16. This is where ribs are needed. However, the height width is appropriately adjusted.

  The manual plate shaft 20 is a rod-like member and is rotatably assembled in the holding portion 18. One end of the manual plate shaft 20 is exposed from the casing 12 as shown in FIG. 2, and is connected to an inner wire of a control cable 26 extending from the shift control lever 24 via a control lever 28 (see FIG. 4). An inhibitor switch 29 is attached to the manual plate shaft 20.

  The inhibitor switch 29 has an operating piece (not shown) inside, and when the manual plate shaft 20 rotates, the operating piece rotates together with the manual plate shaft 20. A contact point is provided on the operating piece. When the operating piece rotates together with the manual plate shaft 20 and moves relative to the outer container (not shown) of the inhibitor switch 29, the contact point between the outer container and the operating piece is reduced. The conduction point changes. Thereby, the inhibitor switch 29 detects the rotation of the manual plate shaft 20, that is, the speed change operation by the shift control lever 24. The detected result is sent to an ECU (electronic control unit) or the like.

  The manual plate shaft 20 is provided so as to penetrate the holding portion 18, and a manual plate 30 is integrally fixed to the other end side penetrating the holding portion 18. The manual plate 30 is a flat plate member, and has a fan-shaped detent portion 32, a stopper portion 34, and an operation lever 36.

  The detent portion 32 is formed in a fan shape from the center, and unevenness is formed on the fan-shaped outer peripheral end surface. Each unevenness is formed corresponding to the speed change operation of the shift control lever 24, and the engagement arm 38 is always fitted in any one of the recesses with an appropriate elastic force. The other end side of the engaging arm 38 is fixed to the casing 12, and when the detent portion 32 rotates, the distal end portion sequentially fits into the concave portion to give the detent portion 32 an appropriate click feeling.

  The stopper part 34 is composed of two stoppers 35 and 37. The stoppers 35 and 37 are formed radially from the center of the manual plate 30, and when the manual plate 30 is rotated at a predetermined angle, one of the stoppers 35 and 37 is on the corresponding side surface of the reinforcing rib 22. Abut. Specifically, the stopper 35 contacts the upper side surface (in FIG. 1) of the reinforcing rib 22 when the shift control lever 24 is set to the P (parking) range, and the stopper 37 is a first speed range or the like. That is, when the shift control lever 24 is pulled most rearward, it contacts the lower side surface of the reinforcing rib 22.

  The operating lever 36 extends downward, and a parking rod 40 is connected to the tip of the operating lever 36. The parking rod 40 is provided so as to be movable along the axial direction of the parking rod 40. When the parking rod 40 is pushed in the axial direction by the operating lever 36, that is, when it moves in the right direction in the figure, the enlarged portion 45 provided at the tip is parked. The sprag 42 is pushed down, and the parking sprag 42 is engaged with the parking gear 44. Thereby, the rotation of the parking gear 44 is locked and the axle is fixed.

Next, the operation and effect of the manual plate structure will be described.
When the driver operates the shift control lever 24, the operation is transmitted to the speed reducer 10 via the control cable 26 as shown in FIG. Then, the control lever 28 is actuated by the inner wire of the control cable 26 and the manual plate shaft 20 rotates around the axis in the holding portion 18. When the manual plate shaft 20 rotates, the manual plate 30 rotates, and an appropriate click feeling is generated by the detent portion 32.

  In the case where the speed change operation is set to the N or P range, that is, the neutral or parking range, the inhibitor switch 29 sends a message to that effect so that the engine can be started. In each shift range, the inhibitor switch 29 sends a signal to that effect to the ECU, and a display (not shown) indicating each shift range is displayed on a panel (not shown) provided in the vehicle.

  When the shift control lever 24 is set to the parking range and tilted forward (relative to the vehicle), or set to the first speed (LOW) range or the like, the shift control lever 24 is pulled down most backward (same as above). The stopper portion 34 of the manual plate 30 abuts on each side surface of the reinforcing rib 22 and the rotation operation of the manual plate 30 is locked. Thereby, the rotation range of the manual plate shaft 20 is limited within the allowable range of the inhibitor switch 29, and the operation piece of the inhibitor switch 29 is not pressed against the container body.

  FIG. 5 shows a state where the parking range is set and the stopper 35 is in contact with the upper side of the reinforcing rib 22, and FIG. 6 shows that the shift control lever 24 is pulled rearward and the stopper 37 is placed on the lower side of the reinforcing rib 22. The contact state is shown.

  Therefore, even if the shift control lever 24 is operated largely, the manual plate shaft 20 does not rotate greatly, and the operating piece of the inhibitor switch 29 does not move beyond the allowable range, and the inhibitor switch 29 (operating piece). Can be prevented.

  Further, the reinforcing rib 22 provided in the vicinity of the holding portion 18 may be formed in a height width where the stopper portion 34 abuts, and a locking portion for locking the stopper portion 34 is provided in the casing 12 separately. There is no need. Further, even when the manual plate shaft 20 is rotated in either the forward or reverse direction, the stopper 35 or the like is brought into contact with the same reinforcing rib 22 and the rotation of the manual plate shaft 20 is locked. The inhibitor switch 29 can be accurately locked at a predetermined position with a simple configuration without being affected by the assembling accuracy.

  In addition, the manual plate structure concerning this invention is not limited to the case where it uses for the said reduction gear 10, It can be used for the reduction gear of another type, and an automatic transmission.

  Further, the shape of the stopper 35 and the like is not limited to the above example, and may be other shapes. For example, the stopper 35 may be bent and brought into contact with the reinforcing rib without changing the height width of the reinforcing rib 22. When other reinforcing ribs are formed in the vicinity of the reinforcing ribs 22 of the holding portion 18, they may be brought into contact with other reinforcing ribs, or the stoppers 35 and the like may be brought into contact with the two reinforcing ribs, respectively. . Further, for soundproofing, a rubber member may be attached to the stopper 35 or the like, or a contact surface with the stopper 35 or the like, or irregularities may be formed.

The front view which shows one Embodiment of the reduction gear concerning this invention. Sectional drawing which shows the reduction gear of FIG. The perspective view which shows a manual plate structure. The perspective view which shows a shift control lever etc. The partial front view which shows the action | operation of a manual plate structure. The partial front view which shows the action | operation of a manual plate structure.

Explanation of symbols

10 ... Reducer 12 ... Casing (container)
DESCRIPTION OF SYMBOLS 14 ... Vertical wall 16 ... Outer wall 18 ... Holding part 20 ... Manual plate shaft 30 ... Manual plate 34 ... Stopper part 35, 37 ... Stopper

Claims (3)

A container body (casing) covering the outer periphery of the vehicle transmission;
A manual plate shaft provided through the container body and rotated by a shift control lever;
An inhibitor switch that is attached to the manual plate shaft on the outer surface side of the container body and detects a shift operation by the shift control lever;
A manual plate attached to the manual plate shaft on the inner surface side of the container body and having an operating lever portion connected to a detent portion for generating a click feeling and a parking rod;
A holding portion provided on the inner surface of the container body to hold the manual plate shaft rotatably;
Reinforcing ribs formed on the inner surface of the container body by connecting the outer peripheral surface of the holding portion and the outer wall of the container body;
A stopper that abuts against the reinforcing rib and stops the rotation of the manual plate shaft within the operating range of the inhibitor switch ,
The stopper is provided between the detent portion and the operating lever and is provided at two positions on the manual plate. Each stopper is located at a permissible limit position for both forward and reverse rotation of the inhibitor switch. A manual plate structure for a transmission for a vehicle, wherein the manual plate structure is in contact with the back surface . The transmission includes a parking gear,
The manual plate is connected to the parking gear locking mechanism via the parking rod, and the parking gear is locked by operating the locking mechanism at one of the allowable limit positions. The manual plate structure of the vehicle transmission according to claim 1 . The transmission is manual plate structure for a vehicle transmission according to claim 1 or 2 characterized in that a reduction gear which is mounted on an electric vehicle.

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