JPH0874978A - Coaxial type inhibitor switch and positioning jig - Google Patents

Abstract

PURPOSE: To provide a coaxial type inhibitor switch wherein it is not necessary to break sealing of an electric switch function part of a mover in the adjustment of the attaching angle. CONSTITUTION: A positioning jig 23 is inserted around a manual shaft 11 only in the adjustment of the attaching angle, and a positioning pin 23A of the positioning jig 23 is inserted into a positioning hole 14 of an inhibitor switch 10, and the inhibitor switch 10 is fixed to a casing body of an automatic transmission in the state where the rotation is locked. Since it is not necessary to provide a hole communicated with a housing space for a mover 12 and a small screw for blocking this hole, an electric switch function part is not corroded by invasion of water, and the adjustment work of the attaching angle can be quickly, accurately, and easily performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a coaxial type which is fixed to an automatic transmission housing with a manual shaft penetrating therethrough, and which detects a rotation angle of the manual shaft to identify a shift mode of the automatic transmission. TECHNICAL FIELD The present invention relates to a type inhibitor switch and a positioning jig for adjusting a mounting angle of a coaxial type inhibitor switch.

[0002]

2. Description of the Related Art In automatic transmissions for automobiles which have been widely used in recent years, a driver operates a shift lever in the vehicle to
One of the six shift modes of D range, N range, parking range, first speed range, second speed range, and reverse range is set. The operation amount of the shift lever is transmitted to the automatic transmission via a mechanical structure such as a wire, and is input to the automatic transmission as a rotation angle of the manual shaft. The automatic transmission switches its shift mode according to the rotation angle of the manual shaft. The inhibitor switch is a type of rotary switch that indirectly detects the shift mode of the automatic transmission by detecting the rotation angle of the manual shaft. The coaxial switch and the manual shaft are inserted directly into the manual shaft. It is roughly divided into detachable offset type regardless of.

The coaxial type inhibitor switch is fixed to the casing of the automatic transmission with the manual shaft penetrating therethrough, and detects the relative rotation angle of the manual shaft with respect to the casing of the automatic transmission to detect the shift mode of the automatic transmission. Identify. The output of the coaxial type inhibitor switch is the ON-OF display of the shift mode, the parking lamp and the backward display lamp.
In addition to F, it is also used as an interlock (safety device) in the electric control system of automobiles. For example, when the rotation angle of the manual shaft corresponds to the N range of the automatic transmission, an electrical signal is output from the inhibitor switch, and only when this electrical signal is present, the starting operation by the ignition key is possible.

Since the coaxial type inhibitor switch indirectly identifies the shift mode of the automatic transmission from the relative rotation angle of the manual shaft with respect to the automatic transmission housing, the mounting angle of the coaxial type inhibitor switch with respect to the automatic transmission housing is determined. If they are misaligned, the switching timing of the automatic transmission and the switching timing of the coaxial inhibitor switch may be misaligned, and various functions and systems that use the output of the coaxial inhibitor switch may malfunction. . Therefore, the coaxial inhibitor switch is provided with a special mechanism for adjusting the mounting angle with respect to the automatic transmission housing.

A procedure for adjusting the mounting angle in the conventional coaxial type inhibitor switch will be described with reference to FIGS. 3 and 4. FIG. 3 is an explanatory view of the structure of a conventional coaxial type inhibitor switch, and FIG. 4 is an explanatory view of a conventional attachment angle adjusting method. 3A is a sectional view and FIG. 3B is a plan view. Here, a pin hole for positioning is formed in the mover of the coaxial inhibitor switch, and a pin is inserted into the pin hole from the outside to adjust the mounting angle of the coaxial inhibitor switch.

In FIG. 3, a manual shaft 31 shown by cutting the upper and lower sides is constrained by a spline (or a double-width portion) (not shown) formed in the mover 32 of the coaxial type inhibitor switch 30 so as to be integrated with the mover 32. Rotate.
The circuit base 34 and the case 33 form a switch housing structure to seal the electric switch function part of the mover 32 from the outside air. The contact point 35 provided on the mover 32 and the contact point 36 provided on the circuit base 34 constitute a rotary switch, and the ON / OFF function is performed at a specific rotation angle of the mover 32 with respect to the circuit base 34. A female screw 33A is formed on the side of the case 33 far from the manual shaft 31, and an opening of the female screw 33A is sealed by screwing a machine screw 37 therein. Positioning pin holes 32A are formed at positions where the rotating surface of the mover 32 overlaps with the female screws 33A. Oval through hole 3 formed at the edge of case 33
3C and 33D are for fixing the coaxial type inhibitor switch 30 to the housing of the automatic transmission with bolts.
The range in which the bolt can move in the oval cross section of C and 33D is the range in which the mounting angle of the coaxial inhibitor switch 30 can be adjusted with the manual shaft 31 as the center.

In FIG. 4, the coaxial inhibitor switch 30 is fixed to a casing 40 of an automatic transmission with bolts 41 and 42. Bolts 41 and 42 penetrate through through-holes 33C and 33D of the coaxial type inhibitor switch 30, respectively, and are screwed into female screws formed on a casing 40 of the automatic transmission. Inside the casing structure of the coaxial type inhibitor switch 30 fixed to the casing 40 of the automatic transmission, a mover (32) that rotates integrally with the manual shaft 31 is stored. When adjusting the mounting angle of the coaxial type inhibitor switch 30 with respect to the housing 40 of the automatic transmission, the screw 41 of FIG. 3 is removed and the female screw 33A is opened, and then the bolts 41 and 42 are loosened to remove the inhibitor switch 30.
Is rotatable with respect to the housing 40 of the automatic transmission. Then, insert the positioning pin 43 into the female screw 33A,
The coaxial type inhibitor switch 30 is rotated about the manual shaft 31 to a position where the tip portion of the pin 43 can be inserted vertically into the pin hole 32A of the mover 32. After that, the bolts 41 and 42 are tightened again to firmly fix the coaxial type inhibitor switch 30 to the housing 40 of the automatic transmission.

A structure for adjusting the mounting angle of an offset type inhibitor switch is shown in Japanese Patent Publication No. 4-74573.
The offset type inhibitor switch is fixed to a position adjacent to the manual shaft and is entirely removable from the housing of the automatic transmission without interfering with the mechanism on the manual shaft side. Then, the rotation angle is transmitted to the shaft of the offset type inhibitor switch via a manual lever fixed to the manual shaft. Here, the manual lever and the offset type inhibitor switch are provided with positioning holes, and the offset type inhibitor switch is bolted to the housing of the automatic transmission while the positioning holes of both are overlapped to adjust the mounting angle ( N range) is made.

[0009]

In the coaxial type inhibitor switch 30 shown in FIGS. 3 and 4, there is a problem that the mounting angle cannot be adjusted unless the electrical switch function part is broken. A female screw 33A is formed on the case 33 for protecting the electrical switch function part from dust, moisture and harmful atmosphere of the environment where the automatic transmission is placed, and the machine screw 37 is removed every time the mounting angle is adjusted. Since the electric switch function part is exposed to the outside air when adjusting the mounting angle,
There is a possibility that the metal powder or water attached to the tip of the positioning pin 43 or the small screw 37 may enter the electrical switch function portion and upset the function of the coaxial inhibitor switch 30. On the other hand, in the normal state, the machine screw 37 ensures the electrical function of the switch to be sealed, but there is no guarantee that the machine screw 37 will not come loose or come off due to the vibration of the automatic transmission. There is also a risk of forgetting to return the small screw 37 to the original position after the adjustment. The structure that breaks the seal for adjustment somewhat compromises the benefits that the seal provides. In addition, machine screw 37
Removal and installation of the coaxial type inhibitor switch 3
The number of man-hours for adjusting the mounting angle of 0 has been increased. Further, the machine screw 37 increases the number of parts of the inhibitor switch 30, and the arrangement of the female screw 33A and the machine screw 37 in the case 33 is a design constraint of the case 33.

Further, in the conventional coaxial type inhibitor switch 30, the mover 32 into which the pin 43 for positioning is inserted.
Since the pin hole 32A of is not visible from the outside, the pin hole 3
The insertion of the pin 43 into the 2A becomes a fumbling state. Further, unless the operator holds the pin 43 vertically, he / she cannot properly encounter the pin hole 32A. Therefore, before getting used to the work, it takes a lot of time and effort by repeating trial and error.

According to the present invention, there is no need to break the sealing of the electrical switch function portion when adjusting the mounting angle, and the coaxial inhibitor switch and the position used when adjusting the mounting angle of the coaxial inhibitor switch. The purpose is to provide a matching jig.

[0012]

According to another aspect of the present invention, there is provided an inhibitor switch, comprising: a mover having a manual shaft penetrating therethrough and coaxially restrained from rotating by the manual shaft;
A switch housing structure that holds the mover rotatably, and rotates the entire body around the manual shaft to adjust the mounting angle with respect to the automatic transmission housing. In a coaxial type inhibitor switch in which a contact on a mover side of an electrical switch function portion contacts a contact on a switch housing side at a rotation angle, the coaxial switch intersects a plane perpendicular to the manual shaft and does not communicate with the electrical switch function portion. Positioning holes are provided outside the switch casing structure, and the switch casing structure is rotated to a position where a positioning jig whose rotation is constrained by the manual shaft is constrained by the positioning holes, whereby the mounting is performed. The angle can be adjusted.

The coaxial type inhibitor switch according to claim 2 is
The positioning hole is a round hole formed in the switch casing structure substantially parallel to the manual shaft.

According to a third aspect of the present invention, there is provided an alignment jig, wherein an arm portion which is restrained from rotating by the manual shaft in a state where the manual shaft is inserted through a coaxial type inhibitor switch, and the manual shaft when the manual shaft is inserted. An insertion pin arranged on the rotation side of the arm portion so as to intersect with a surface perpendicular to the manual shaft, and the insertion pin is inserted into a positioning hole formed in the switch housing structure of the coaxial type inhibitor switch. By letting
The mounting angle of the switch housing structure can be adjusted.

[0015]

In the coaxial inhibitor switch of the first aspect, the angular position of the relative rotation of the mover with respect to the switch housing structure is indirectly estimated by using the positioning jig. Since the mover and the alignment jig are mutually restrained from rotating via the manual shaft and rotate integrally, the rotation angle of the alignment jig with respect to the switch housing structure is adjusted to a predetermined value by the positioning hole. Then, the rotation angle of the mover with respect to the switch casing structure also becomes a predetermined value at the same time. The positioning hole restricts the rotation of the manual shaft in both directions at the same time by restraining the insertion pin or the like provided on the tip side of the arm portion of the positioning jig. The positioning hole is provided outside the switch housing structure and does not threaten the electrical sealing of the switch function portion. The electrical switch function portion is composed of terminals on the mover side and the switch casing structure side. Claim 2
In the coaxial inhibitor switch, the insertion pin of the positioning jig is inserted into the round hole of the switch housing structure.

In the positioning jig of the third aspect, since the mover of the coaxial type inhibitor switch and the arm portion of the positioning jig rotate integrally via the manual shaft while maintaining a constant relative angle, the coaxial type The turning angle of the mover of the inhibitor switch can be indirectly grasped and adjusted from the outside of the switch housing structure. When the insertion pin of the positioning jig is constrained in the positioning hole of the switch housing structure, the mover is placed in a fixed angular position with respect to the switch housing structure via the manual shaft inside the sealed space of the switch housing structure. It is positioned.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a coaxial type inhibitor switch and a positioning jig of an embodiment, and FIG. 2 is an explanatory view of a mounting angle adjusting method. In FIG. 1, (a) is a plan view of the alignment jig, (b) is a side view of the alignment jig, and (c).
FIG. 4 is a sectional view of a coaxial type inhibitor switch. Here, using a positioning jig that rotates integrally with the mover via the manual shaft, the relative rotation angle of the mover with respect to the switch housing structure is adjusted.

In FIGS. 1 (a) and 1 (b), the positioning jig 23 is entirely made of a thick iron plate and shaped like a scoop.
A manual shaft can be inserted into a rotation hole 23B formed at one end to rotate the whole. The turning hole 23B is provided with a facing surface 23C for sandwiching the width across flats of the manual shaft and rotating the manual shaft integrally with the manual shaft. A positioning pin 23A is provided on the other end of the positioning jig 23. Opposing surface 2 with respect to a line connecting the center of the rotation hole 23B and the positioning pin 23A
The inclination angle of 3C is set so that the inhibitor switch 10 is adjusted to the N range in the adjustment of the mounting angle described below using the positioning jig 23.

In FIG. 1 (c), the coaxial type inhibitor switch 10 has a manual shaft 11 inserted directly into the center of rotation of its mover 12. A not-illustrated double-sided width portion is formed in a portion of the manual shaft 11 inserted into the movable member 12, while the movable member 12 is provided with an opposed surface (not shown) adapted to the double-sided width portion. The width across flats of the manual shaft 11 is sandwiched between the facing surfaces of the mover 12, and the mover 12 and the manual shaft 11 rotate integrally. The circuit base 14 and the case 13 constitute a switch casing structure, and an electrical switch function portion (contact 1
(5, 16) is sealed from the outside air, and the mover 12 is rotatably held inside. Contact 16 provided on the mover 12
And the contact 15 provided on the circuit base 14 constitutes a rotary switch, and the movable element 1 with respect to the circuit base 14
2. ON-OFF function at a specific rotation angle of 2. Holding part 12 of mover 12 with manual shaft 11 inserted
R passes vertically through the switch casing structure, and the holding unit 1
Rubber seals 12S are provided above and below the 2R to ensure the sealing of the gap between the circuit base 14 and the case 13 as the mover 12 rotates.

The alignment of the coaxial type inhibitor switch 10 is performed by inserting the alignment jig 23 into the width across flat portion 11C formed on the upper end portion of the manual shaft 11. After the manual shaft 11 of the automatic transmission is set to the N-range rotation state, the unillustrated bolts for fixing the coaxial inhibitor switch 10 to the housing of the automatic transmission are loosened to move the coaxial inhibitor switch 10 to the manual shaft 11 It can be rotated around. Then, the positioning pin 23A of the positioning jig 23 is connected to the positioning hole 14 of the circuit base 14.
Coaxial type inhibitor switch 10 to the position where it can be inserted into A
Is rotated, and a bolt (not shown) is tightened again to fix the coaxial type inhibitor switch 10 to the housing of the automatic transmission. At this time, the positioning pin 23A is attached to the positioning hole 14A.
The relative rotation of the mover 12 and the circuit base 14 is locked by the positioning jig 23 in the state of being inserted into
Even when the coaxial type inhibitor switch 10 is released from the hand or an unnecessary horizontal force is applied when tightening the bolt, there is no fear that the positioning state will be displaced.

In FIG. 2, the coaxial type inhibitor switch 10 is provided with two through holes 14C and 14D. Bolts (not shown) are inserted into the through holes 14C and 14D and fastened to female screws on the housing side of the automatic transmission. As a result, the coaxial inhibitor switch 10 is fixed to the automatic transmission. The range in which the bolt can move within the oval cross section of the through holes 14C and 14D is the range in which the mounting angle of the coaxial inhibitor switch 10 can be adjusted. Loosen this bolt and move the entire coaxial inhibitor switch 10 to the manual shaft 1
It can be rotated around 1. The manual shaft 11 is inserted into the rotation hole 23 of the positioning jig 23, the entire coaxial inhibitor switch 10 is rotated, and the positioning pin 23A of the positioning jig 23 is inserted into the positioning hole 14A. In this state, the bolts of the two through holes 14C and 14D are tightened again to fix the coaxial type inhibitor switch 10 to the housing of the automatic transmission.

In the coaxial type inhibitor switch 10 of the embodiment described above, the mounting angle can be adjusted while maintaining the sealing of the switch portion of the mover 12. Therefore, even in high humidity, corrosive atmosphere, dusty environment, etc., the mounting angle can be adjusted without adversely affecting the switch function of the coaxial inhibitor switch 10. Further, since the positioning hole 14A does not need to be sealed with a small screw as in the configuration of FIG. 3, a female screw is not necessary, so that the number of parts, the number of processing steps,
The number of man-hours required to adjust the mounting angle is reduced, and there is no risk of forgetting to tighten the machine screws after adjustment. Further, the mover 12 is invisible because it is sealed by the case 13 and the circuit base 14.
Is the positioning jig 2 via the manual shaft 11.
3, the rotation is fixed, and the mover 12 and the circuit base 14 can be positioned with the accuracy of positioning the positioning pin 23A of the positioning jig 23 in the positioning hole 14A. At this point, since the positioning hole 14A is located considerably outside the mover 12, the angle adjustment accuracy is higher than that of the configuration of FIG. 3 in which the mover is directly positioned. Also,
Since the positioning hole 14A is a simple hole, it is unlikely to be broken like a female screw even if it is handled roughly, and the positioning pin 23A is inserted even if the positioning accuracy is increased to a diameter that can hold the positioning pin 23A without play. It does not hurt. Further, since the alignment jig 23 does not usually need to be attached, the common alignment jig 23 can commonly adjust many automatic transmissions without impeding the degree of freedom in designing the manual shaft 11 and the like. Therefore, the variation in the operation of the inhibitor switch 10 for each vehicle is reduced.

In the work of adjusting the mounting angle of the inhibitor switch shown in FIG. 4, while operating the pin 43 with one hand and rotating the inhibitor switch 30 with the other hand to position the pin 43, the pin 43 is replaced with a wrench and bolted. Four
Since the screws 1 and 42 were tightened, there was a possibility that the inhibitor switch 30 would rotate and the adjustment would go wrong when the pin 43 was changed to a wrench. However, in this embodiment, the positioning pin 23A is supported by the positioning jig 23 on the manual shaft 11 so that the operator does not have to support the positioning pin 23A and the positioning hole 14A can be visually confirmed from beginning to end. A reliable and quick adjustment of the mounting angle is possible.

The coaxial inhibitor switch 3 shown in FIG.
No. 0 is a structure in which internal electrical switch function parts cannot be cleaned while being fixed to the housing of the automatic transmission with bolts 41 and 42. When the bolts 41 and 42 are loosened, it is necessary to adjust the entire mounting angle. Therefore, in the coaxial type inhibitor switch of the present embodiment, by adopting the following configuration, the internal electrical switch function part is cleaned while the circuit base 14 is fixed to the casing of the automatic transmission. May be performed. That is, the through holes 14C and 14D of FIG.
The positioning hole 14A is provided in the circuit base 14, and the case 13 is attached to the circuit base 14 inside the through holes 14C and 14D and the positioning hole 14A. At this time, the case 13 is pulled out from the manual shaft 11 without loosening the bolts of the through holes 14C and 14D, and the mover 12 is pulled out from the manual shaft 11 to clean the contacts 15 and 16 and replace the mover 12. it can. After the work, if the mover 12 is reinserted into the manual shaft 11, the mover 12 is returned to its original position by the width across flats of the manual shaft 11, and it is not necessary to adjust the mounting angle of the inhibitor switch 10.

[0025]

According to the coaxial inhibitor switch and the positioning jig of the present invention, it is not necessary to provide an adjusting hole communicating with the inside unlike the conventional example, and therefore there is no risk of water intrusion. The reliability of the inhibitor switch is improved.
Further, a small screw for closing the adjustment hole as in the conventional case is not required, and the number of parts of the inhibitor switch is reduced. Further, in the conventional inhibitor switch, it was necessary to adjust the mounting angle with one hand and tighten the bolt with the other hand, but in the present invention, the workability is improved because the inhibitor switch can be mounted and adjusted with both hands. improves. Furthermore, in the case of offset type inhibitor switches,
The manual lever of the mating part was provided with the N range position adjusting hole, but in the present invention, the position adjusting jig may be attached only when adjusting the mounting angle, and the manual lever is provided with the N range position adjusting hole. Since it is not necessary to provide, the shape of the manual lever is simplified and the manufacturing cost is reduced.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a coaxial inhibitor switch according to an embodiment.

FIG. 2 is an explanatory diagram of a method of adjusting a mounting angle.

FIG. 3 is an explanatory diagram of a structure of a conventional coaxial inhibitor switch.

FIG. 4 is an explanatory diagram of a conventional attachment angle adjusting method.

[Explanation of symbols]

 11, 31 Manual shaft 12, 32 Mover 13, 33 Case 14, 34 Circuit base 15, 16, 35, 36 Contact 23 Positioning jig 37 Machine screw 11C Width across flats 12R Holding portion 12S Rubber seal 14A, 32A Positioning hole 23A Positioning pin 23B Insertion hole 23C Opposing surface 33A Female screw 14C, 14D, 33C, 33D Through hole

Claims (3)

[Claims] 1. A mover having a manual shaft penetrating therethrough, the rotation of which is restricted coaxially by the manual shaft, and a mover that holds the mover rotatably and rotates about the manual shaft as a whole to perform automatic gear shifting. A switch housing structure capable of adjusting a mounting angle with respect to a machine housing, wherein the movable element side contact of the electrical switch function portion contacts the switch housing side contact at a specific rotation angle of the manual shaft. In the inhibitor switch, a positioning hole that intersects with a plane perpendicular to the manual shaft and does not communicate with the electrical switch function portion is provided outside the switch casing structure, and the rotation is restricted by the manual shaft. By rotating the switch housing structure to the position where the jig is restrained by the positioning hole, Coaxial inhibitor switch, characterized in that the angled and adjustable. 2. The coaxial inhibitor switch according to claim 1, wherein the positioning hole is a round hole formed in the switch casing structure substantially in parallel with the manual shaft. 3. An arm portion that is restricted from rotating by the manual shaft in a state where the manual shaft is inserted through the coaxial type inhibitor switch, and a rotation side of the arm portion when the manual shaft is inserted, An insertion pin arranged to intersect a plane perpendicular to the manual shaft; and inserting the insertion pin into a positioning hole formed in a switch casing structure of a coaxial type inhibitor switch, thereby forming the switch casing. A positioning jig characterized in that the mounting angle of the structure can be adjusted.