JPH1125806A - Shift position switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shift position switch device on which the number of part items can be reduced. SOLUTION: An advance gear stage of a transmission main body is automatically selected by operating a shift lever 10 along a first lever route. The shift lever is operated, so as to be movable to a second lever route from the first lever route and is operated along the second lever route, and a manual speed change in the advance gear stage is performed. Contact point structures 36 (36-1 to 36-5) to 38 and 40 of a switch to detect a position in the first lever route of the shift lever and contact point structures 46 (46-1, 46-2) 47, 51 and 53 of a switch for detecting a position in the second lever route of the shift lever, are constructed on the same apparatus body 31 (32, 33).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift position switch device for detecting the position of a shift lever, which is applied to an automatic transmission having a manual shift function.

[0002]

2. Description of the Related Art In this type of automatic transmission, a first lever route having a shift position such as a parking position, a reverse position, a neutral position, and a drive position is set. Further, a second lever route having an upshift position, a manual position, and a downshift position is set. The first lever route and the second lever route are connected to each other at a drive position and a manual position.

When the shift lever is operated to the drive position in the first lever route, an automatic selection of a forward gear is performed. By moving the shift lever from the drive position on the first lever route to the manual position on the second lever route, the forward gear currently selected is fixed, and the function of manual shifting becomes available. By operating the shift lever from the manual position to the upshift position, the forward gear is increased by one step, and by operating the shift lever from the manual position to the downshift position, the forward gear is decreased by one step.

[0004] The shift position switch device detects the position of the shift lever, and the automatic transmission is operated based on the detection. The shift position switch device includes a first switch that detects a position of the shift lever on a first lever route, and a second switch that detects a position of the shift lever on a second lever route. The movement of the shift lever between the first lever route and the second lever route is detected by another lever route switch device.

[0005]

However, the conventional shift position switch device employs a configuration in which a first switch for an existing automatic transmission having no manual shifting function is diverted and a second switch is added thereto. I was Therefore, an independent switch having a separate body from the first switch is used as the second switch. To dispose the second switch near the shift lever similarly to the first switch, it is necessary to use the second switch. A dedicated member for fixing and supporting was required. as a result,
The number of parts and the number of assembling steps constituting the shift position switch device have been increased, and the cost has been increased.

The present invention has been made in view of the problems existing in the above prior art, and an object of the present invention is to provide a shift position switch device capable of reducing the number of parts.

[0007]

According to the first aspect of the present invention, an automatic transmission is performed by operating a shift lever along a first lever route, and the shift lever is moved to the first lever. A shift position switch device applied to an automatic transmission in which a manual shift is performed by moving from a route to a second lever route and operating along the second lever route, provided in the first lever route. A first switch having a switching position corresponding to each shift position, a second switch having a switching position corresponding to each shift position provided in the second lever route, and a second switch having a shift position provided in conjunction with the shift lever; When the lever is operated to move from the first lever route to the second lever route, the lever is released from the first switch and the second switch is released. And the second switch is switched by operating the shift lever along the second lever route. When the shift lever is moved from the second lever route to the first lever route, the shift lever is disengaged from the second switch. A lever switch engaging means engaged with the first switch and switching the first switch by operating the shift lever along a first lever route, and having a contact structure of the first switch and a second switch. Contact structure
This is a shift position switch device constructed on the same body.

[0008] In the invention of claim 2, a first contact surface and a second contact surface are formed on the body, and the first switch is
A plurality of first fixed contacts provided on the first contact surface, a first mover movable in a direction parallel to the first contact surface,
A first movable contact provided on a surface of the first mover opposed to the first contact surface, the first movable contact being brought into contact with and separated from the first fixed contact in accordance with the movement of the first mover; The switch is
A plurality of second fixed contacts provided on the second contact surface, a second mover movable in a direction parallel to the second contact surface,
A second movable contact that is provided on a surface of the second mover that faces the second contact surface, and that contacts and separates from the second fixed contact in accordance with the movement of the second mover. The switch engagement means is an engagement projection integrally provided on the shift lever, and the engagement projection is disengaged from the first movable element when the shift lever is moved from the first lever route to the second lever route. When the shift lever is moved from the second lever route to the first lever route, the shift lever is disengaged from the second mover and is engaged with the first mover.

In the invention according to claim 3, the first contact surface and the second contact surface are formed flush. (Operation) In the present invention having the above configuration, the shift lever located on the first lever route is engaged with the first switch via lever / switch engaging means. Therefore, the first switch is switched by the operation of the shift lever along the first lever route, and the shift position on the first lever route is detected. For example, when the shift lever is operated to the drive position, automatic selection of the forward gear is performed according to the vehicle state and the like.

When the shift lever is moved from the first lever route to the second lever route, the lever switch engaging means is disengaged from the first switch and is engaged with the second switch. Accordingly, the second switch is switched by an operation of the shift lever along the second lever route, and a shift position on the second lever route is detected. For example, when the shift lever is operated to the upshift position, the forward gear is shifted up by one step, and when the shift lever is operated to the downshift position, the forward gear is shifted down by one step.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, a transmission main body 11 of an electronically controlled automatic transmission (hereinafter simply referred to as "automatic transmission") has a gear mechanism of four forward gears and one reverse gear. Have
It is connected to an automobile engine (not shown). The shift lever 12 is disposed, for example, between a driver's seat and a passenger seat on a vehicle cabin floor. The shift lever 12 is supported on a shift shaft 14 via a multi-axial structure 13 whose base end is not described in detail. Therefore, as shown by a two-dot chain line in FIG.
It is rotatable about the axis of the shift shaft 14 and tiltable with respect to the coaxial line. The cover 15 is disposed so as to cover the pivot support structure near the base of the shift lever 12 in the vehicle interior.

The operation panel 16 is provided around the shift lever 12 on the upper surface of the cover 15. The first lever route 17 is linearly provided on the right side of the operation panel 16. The parking position “P”, the reverse position “R”, the neutral position “N”, the first drive position “D1”, and the second drive position “D2” are in the same order as the first lever route 17.
Is set along.

The second lever route 18 is connected to the operation panel 16.
Is provided in a straight line on the left side. The upshift position “+”, the manual position “M”, and the downshift position “−” are set in the same order along the second lever route 18. The first lever route 17 and the second lever route 18 are in the first drive position “D
1 "and a manual position" M ". The shift lever 12 is moved along each of the lever routes 17 and 18 by the rotation about the axis of the shift shaft 14, and in the first lever route 17, the first drive position “D 1” and the second lever route 18 are provided. Then, if it is in the manual position "M", the shift shaft 14
Is allowed to move between the first lever route 17 and the second lever route 18.

The shift position switch device 19 of the present embodiment includes a shift lever 12 inside the cover 15.
Are arranged side by side near the base. The lever route switch device 20, which is not described in detail, is also juxtaposed in the cover 15 near the base of the shift lever 12. The shift position switch device 19 is for detecting the position of the shift lever 12. The lever route switch device 20 detects the movement of the shift lever 12 between the first drive position "D1" and the manual position "M", that is, which of the lever routes 17 and 18 the shift lever 12 is in. It is for doing. The control device 21 of the automatic transmission controls the transmission main body 11 based on the shift position signal from the shift position switch device 19 and the lever route signal from the lever route switch device 20.

When the shift lever 12 is operated to the first drive position "D1" or the second drive position "D2" on the first lever route 17 when the shift lever 12 is operated, the other input vehicle speed and engine speed are inputted. The forward gear is automatically selected based on a vehicle state signal such as the above. When the shift lever 12 is moved to the manual position “M”, the control device 21 fixes the currently selected forward gear. When the shift lever 12 is operated from the manual position “M” to the upshift position “+”, the control device 21 increases the forward gear by one step, and shifts the shift lever 12 from the manual position “M”. When operated to the down position "-", the forward gear is lowered by one step.

The indicator 22 is, for example, an instrument panel (not shown) in a vehicle compartment equipped with a speedometer and an engine tachometer.
It is provided in. The indicator 22 has a display section 22a having a plurality of marks ("P", "R", "N", "D1", "D2") and a mark "D1" of the display section 22a. And a display section 22b provided with a plurality of marks ("4", "3", "2", "1") arranged in a design that depends on the display sections 22a and 22b. Can be turned on by a light emitting diode (not shown) or the like.

The control device 21 controls the first position of the shift lever 12.
In accordance with the position on the lever route 17, one of the marks on the display section 22a corresponding to the position is lit and indicated.
When the shift lever 12 is operated to move from the first drive position “D1” of the first lever route 17 to the manual position “M”, the control device 21 displays the currently selected forward gear position corresponding to the forward gear position. One of the marks of the portion 22b is lit and indicated. The control device 21 switches one of the marks on the display unit 22b in response to a shift-up position signal or a shift-down position signal from the shift position switch device 19, that is, in response to a manual shift-up or shift-down. Turn on.

Therefore, for example, when the shift lever 12 is operated to move from the first drive position "D1" to the manual position "M" in a state where the forward gear of the transmission body 11 is in the third speed, the display 22b is displayed. The mark “3” is turned on. Further, when the shift lever 12 is operated from the manual position “M” to the upshift position “+” and the forward gear is increased by one, the display unit 22 b
The mark "3" is turned off and the mark "4" is turned on instead. In this state, when the shift lever 12 is operated from the manual position "M" to the downshift position "-" and the forward gear is down by one step, the mark "4" on the display section 22b is turned off and the mark ""3" is lit instead.

Next, the shift position switch device 19 will be described in detail. As shown in FIGS. 2 and 3, the container body 31 includes a fan-shaped plate-shaped stator 32 and a fan-shaped case 33. The stator 32 is fitted to the case 33 so as to close the opening thereof, and a space is formed therein. Same body 31
Is fixed to the inner wall surface of the cover 15 with the outer wall surface on the stator 32 side. The insertion hole 35 is formed through the fan-shaped base of the stator 32 and the case 33 in the case 31. The shift shaft 14 is inserted through the insertion hole 35.

A parking input contact 36-1, a reverse input contact 36-2, a neutral input contact 36-3, a first drive input contact 36-4 and a second drive input contact 36-5 as first fixed contacts are connected to a stator. 32 is attached to the inner wall surface 32a. Each of the contacts 36-1 to 36-5 is inserted into the insertion hole 35.
The shift shafts 14 are arranged at predetermined intervals on the same arc centered on the axis thereof. The common contact 37, which is formed in a small diameter arc concentric with the arc of each of the contacts 36-1 to 36-5, is fixed to each of the fixed contacts 36-1 to 36-5 on the inner wall surface 32a of the stator 32.
It is arranged on the inner peripheral side closer to the insertion hole 35.

The rotor 38 as the first mover is
1 space. The rotor 38 has a base end supported by the shift shaft 14 and an inner wall surface 32 a of the stator 32.
Can be moved in a direction parallel to. Engaging projection 39
Are provided on the surface of the rotor 38 facing the inner wall surface of the case 33. The arc-shaped long hole 33a is the case 33
And the tip of the engaging projection 39 projects outward from the inner space of the body 31 via the elongated hole 33a. The engagement groove 39 a is recessed on the upper surface of the engagement protrusion 39, and is open to the tip end side of the engagement protrusion 39.

The first movable contact 40 is mounted on the surface of the rotor 38 facing the inner wall surface 32a of the stator 32.
The biasing spring 41 is interposed between the first movable contact 40 and the rotor 38. The first movable contact 40 includes an urging spring 4
1 is urged toward the inner wall surface 32a of the stator 32. The first movable contact 40 is moved by the movement of the rotor 38, the common contact 37 and the parking input contact 36-1 corresponding to the parking position "P" of the shift lever 12,
The reverse input contact 36-2 corresponding to the reverse position "R", the neutral input contact 36-3 corresponding to the neutral position "N", and the first drive position "D"
1 "corresponding to the first drive input contact 36-4 or the second drive input contact 36-4.
The second drive input contact 36-5 corresponding to the drive position "D2" is connected.

The first drive position holding mechanism 42 includes:
It is interposed between the rotor 38 and the stator 32. The first drive position holding mechanism 42 includes a sphere 42 attached near the base of the rotor 38 via an urging spring 42a.
b and the spherical body 4 formed on the inner wall surface 32a of the stator 32.
2b is formed by a concave portion 42c into which the 2b falls. When the rotor 38 is moved to a position connecting the first drive input contact 36-4 and the common contact 37 by the first movable contact 40, the first drive position holding mechanism 42
By the urging force of the urging spring 42a, the sphere 42b is
c. Therefore, particularly when the rotor 38 is arranged at this position, it is difficult for the rotor 38 to move to another position with a slight external force. This is because when the shift lever 12 is moved from the second lever route 18 to the first lever route 17 to be described later, the rotor 38 must surely wait at a position corresponding to the first drive position "D1". Because.

The projecting portion 45 is formed by integrally extending a part of the outer edge of the stator 32. Case 33 of the projecting portion 45
The front wall surface (second contact surface) 45a on the side is formed flush with the inner wall surface 32a (first contact surface) of the stator 32. The shift-up input contact 46-1 and the shift-down input contact 46-2 as the second fixed contacts are connected to the front wall 45 of the protrusion 45.
a. The common contact 47 is disposed between the shift-up input contact 46-1 and the shift-down input contact 46-2 on the front wall surface 45a of the protrusion 45. These contacts 46-1, 46-2, 47 are arranged at predetermined intervals on a straight line.

The housing frame 48 having a rectangular cylindrical shape is
Is provided at a position corresponding to the protruding portion 45 of the stator 32 at the outer edge of the stator 32. The housing frame 48 is provided with the stator 32.
The contact between the projection 46 and the case
Surrounds 1, 46-2, 47. The support frame 49 is a storage frame 48
Is formed in a square cylindrical shape to be fitted into the inside thereof, and a shaft hole 49a is formed coaxially in upper and lower walls thereof. The rotating body 50 has a rotating shaft 50a on upper and lower surfaces. The engagement protrusion 50b is provided to protrude from the tip of the rotating body 50, and the knob 50c is formed in a forked shape at the rear end of the rotating body 50. The rotating body 50 is fitted into the support frame 49 from the front end side, and its rotating shaft 50a has corresponding upper and lower shaft holes 49a.
Has been inserted. Support frame 4 in which rotating body 50 is fitted
9 is fitted and fixed in the housing frame 48.

As shown in FIG. 5, a concave movable element 51 as a second movable element supports a second movable contact 53 via an urging spring 52. The movable element 51 is accommodated in the support frame 49, and the convex shape of the engaging projection 50b of the rotating body 50 is loosely fitted in the concave shape. The movable member 51 is provided with its engaging protrusion 50 by rotating the rotating body 50 about a rotating shaft 50a.
b, it is pushed in such a way that it is hollowed out, and is moved in a direction parallel to the front wall surface 45a of the protruding portion 45.

As shown in FIG. 6, the manual position return mechanism 54 is interposed between the engagement projection 50b of the rotating body 50 and the front wall surface 45a of the projection 45. The manual position return mechanism 54 is formed on the front wall 45a of the projection 45 and a sphere 54b attached to the tip of the engagement projection 50b of the rotating body 50 via a return spring 54a. And a valley-shaped slope 54c receiving the valley-shaped slope 54c. Manual position return mechanism 54
Urges the rotating body 50 toward the position corresponding to the manual position "M" of the shift lever 12 by the sphere 54b which is about to fall into the bottom of the slope 54c by the elastic force of the return spring 54a.

As shown in FIG. 2, a bar 56, which is an engagement projection as a lever / switch engagement means, protrudes in the shift lever 12 in a direction perpendicular to the axis thereof and extends in the direction of the body 31. . The bar 56 is a shift lever 1
When 2 is in the first lever route 17, its tip is immersed in the engagement groove 39 a of the rotor 38. Therefore, the shift lever 12 is moved to the first lever route 17.
, The bar 56 pushes the front and rear inner wall surfaces of the engagement groove 39a, and the rotor 38
4 is rotated about the axis. As a result, as shown in FIG. 4, the first movable contact 40 moves the shift position (“P”, “R”, “N”, “D1”, “D1”) of the shift lever 12
2 "), and the fixed contacts (parking input contact 36-1, reverse input contact 36-2, neutral input contact 36-3, first drive input contact 36-4, or second contact corresponding to the same shift position. Drive input contact 36-5)
And the common contact 37 are turned on, and the shift position signal is output to the control device 21.

As shown by a two-dot chain line in FIG. 2, the bar 56 is connected to the shift lever 12 by the first lever route 17.
Is moved from the first lever route 18 to the second lever route 18 to be disengaged from the engagement groove 39a and disengaged from the rotor 38, and enter the space between the knobs 50c to be engaged with the rotating body 50. Therefore, as shown in FIG. 5, when the shift lever 12 is operated along the second lever route 18, the bar 56 pushes the inner wall surface of the knob 50c, and the rotating body 50
Is rotated about a rotation shaft 50a. As a result, the second movable contact 53 is moved according to each position (“+”, “M”, “−”) of the shift lever 12. When the shift lever 12 is operated to the shift up position "+", the fixed contact 46-1 and the common contact 47 are turned on,
The shift-up position signal is output to the control device 21 (FIG. 5C). When the shift lever 12 is operated to the downshift position "-", the fixed contact 46-2 and the common contact 47 are turned on, and a downshift position signal is output to the control device 21 (FIG. 5B). Note that the control device 21 determines that the shift lever 12 has the second lever route 18
The state in which both the shift-up input contact 46-1 and the common contact 47 and the shift-down input contact 46-3 and the common contact 47 are not turned on (FIG. 5 (a)) changes the shift lever 12 to the manual position "M". It is determined that there is.

The present embodiment having the above configuration has the following effects. (1) A contact structure of a switch for detecting the position of the shift lever 12 on the first lever route 17 (36-
1,36-2,36-3,36-4,36-5,37,38,4
0 etc.) and the second lever route 18 of the shift lever 12
The switch contact structures (46-1, 46-2, 47, 51, 53, etc.) for detecting the position at are constructed on the same body 31. Therefore, the contact structure (46-1,
46-2, 47, 51, 53, etc.) around the shift lever 12 without the need for a dedicated member, the number of parts can be reduced, and the shift position switch device 19 can be provided at low cost.

(2) Contacts 36-1, 36-2, 36-3, 36
-4, 36-5, the front wall surface 45a of the protruding portion 45 is
The contacts 46-1, 46-2, and 47 are formed flush with the inner wall surface 32a of the stator 32 where the contacts are provided. Therefore, the stator 32 may be a flat plate with less processing time, and the shift position switch device 19 can be provided at a lower cost.

It is to be noted that a contact structure of a starter switch for starting a starter circuit of the engine is provided in the body 31 without departing from the spirit of the present invention. Then, with the starter switch configuration, for example, the shift lever 12
Is configured to enable the starter circuit to be activated only when is operated to the parking position "P" or the neutral position "N". That is, the function of the neutral start switch is provided to the shift position switch device 19 of the above embodiment.

The technical idea that can be grasped from the above embodiment will be described. When the shift lever 12 is operated along the first lever route 17, automatic shifting is performed, and the shift lever 12 is moved from the first lever route 17 to the first shift position. A shift position switch device assembly applied to an automatic transmission in which manual shifting is performed by moving to a two-lever route 18 and operating along the second lever route 18, wherein the first lever route 17 is A first switch (36 to 42 or the like) that has a switching position corresponding to each shift position provided and is operated to be switched by an operation of the shift lever 12 along the first lever route 17 and a switch provided in the second lever route 18 It has a switching position according to the shift position, and is along the second lever route 18 of the shift lever 12 Second switches 46 to 54, which are switched by operation, and the contact structures 36 to 38, 40 of the first switches 36 to 42 and the contact structures 46, 47, 51, 53 of the second switches 46 to 54 are the same. A shift position switch device assembly built on the housing 31.

In this way, the number of parts can be reduced and the apparatus 19 can be constructed at low cost.

[0035]

According to the first and second aspects of the present invention, it is possible to provide a low-cost shift position switch device with a reduced number of components.

According to the third aspect of the present invention, it is possible to provide a shift position switch device at a low cost, since the body can be formed into a shape requiring less processing time.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an automatic transmission to which a shift position switch device according to an embodiment is applied.

FIG. 2 is a perspective view showing a configuration near a base of a shift lever in which a shift position switch device is arranged.

FIG. 3 is an exploded perspective view of a shift position switch device assembly.

FIG. 4 is a view for explaining the relationship between each position of a shift lever and each contact.

FIGS. 5A to 5C are cross-sectional views illustrating the operation of a rotating body.

FIG. 6 is a sectional view showing a manual position return mechanism.

[Explanation of symbols]

12: shift lever, 17: first lever route, 18 ...
Second lever route, 19: shift position switch device, 31: body, 36: contact forming the first switch,
37: a common contact, 38: a rotor, 40: a first movable contact, 46: a contact forming a second switch, 47: a common contact, 50: a rotating body, 51
.., A movable element, 53, a second movable contact, 56, a bar as lever / switch engagement means.

Claims (3)

[Claims] An automatic shift is performed by operating a shift lever along a first lever route. The shift lever is moved from the first lever route to a second lever route, and is operated along the second lever route. A shift position switch device applied to an automatic transmission in which a manual shift is performed by operating the first lever route, the first switch having a switching position corresponding to each shift position provided in the first lever route; and the second switch. A second switch having a switching position corresponding to each shift position provided in the lever route; and a second switch provided to be interlocked with the shift lever, wherein a second switch is operated when the shift lever is moved from the first lever route to the second lever route. Operation along the second lever route of the same shift lever while being disengaged from the first switch and engaged with the second switch To switch the second switch, and when the shift lever is operated to move from the second lever route to the first lever route, the shift lever is released from the second switch and the first switch is moved.
A lever switch engaging means engaged with the switch and switching the first switch by operating the shift lever along a first lever route, wherein the contact structure of the first switch and the contact structure of the second switch are provided. , A shift position switch device built on the same body. 2. A first contact surface and a second contact surface are formed on the body, wherein the first switch includes a plurality of first fixed contacts provided on the first contact surface, and a first contact surface on the first contact surface. A first mover movable in a direction parallel to the first mover, a first mover provided on a surface of the first mover opposed to the first contact surface, and a first fixed contact corresponding to a movement of the first mover. A second movable switch provided on a second contact surface; and a second movable contact movable in a direction parallel to the second contact surface. A movable element, and a second movable contact provided on a surface of the second movable element opposite to the second contact surface, the second movable contact being brought into contact with and separated from the second fixed contact in accordance with the movement of the second movable element. The lever / switch engagement means is an engagement projection integrally provided on the shift lever, and the engagement projection is a shift lever. When the bar is operated to move from the first lever route to the second lever route, the bar is disengaged from the first mover and engaged with the second mover, and the shift lever is moved from the second lever route to the first lever route.
2. The apparatus according to claim 1, wherein when moved to a lever route, the second mover is separated from the second mover and is engaged with the first mover.
3. The shift position switch device according to claim 1. 3. The shift position switch device according to claim 2, wherein the first contact surface and the second contact surface are formed flush.