JP2567066Y2 - Structure of control switch for automatic transmission - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control switch for setting switching of a self-propelled transmission of an automobile.

[0002]

2. Description of the Related Art A control switch for an automatic transmission which is used in conjunction with an automatic transmission setting such as a neutral position, a reverse position, a drive position and the like is constituted by a conventional metal die-cast body and a synthetic resin cover. Was.

[0003]

However, in the case of the prior art, the fixed contact was fixed by caulking the cover, or the fixed contact was insert-molded in the cover, and then the terminal plate was connected to the fixed contact by soldering. Many man-hours,
In addition, since the soldered portion needs to be sealed with a sealant, it takes a very long time to fill and dry the sealant, and there is a risk of performance deterioration such as insulation failure due to a filling error. In addition, the reliability of conduction is low due to the above-mentioned caulking and soldering, and the number of parts increases because the conductive part is composed of a combination of two types of parts, a fixed contact and a terminal plate. There was a problem.

The present invention has been made in view of the above-mentioned problems, and aims at reducing the number of parts and the number of assembling steps, and furthermore, has a high reliability with respect to conduction and has a high insulation property. And the reliability of the contact is improved
Another object of the present invention is to provide a structure of a control switch for an automatic transmission in which a movable contact can be slid smoothly and operation can be stabilized.

[0005]

In order to achieve the above object, according to the present invention, there is provided a fixed contact for switching for setting a switching according to a neutral position, a reverse position, a drive position and the like of an automatic transmission. A body provided on the inner wall surface,
A rotating shaft mounted on the body so as to be operable from outside of the body and rotatable in a direction parallel to the inner wall surface, and integrally connected to the rotating shaft to rotate parallel to the inner wall surface. The movable body includes a movable piece that moves about a moving axis and a movable body that is provided on a surface of the movable piece that faces the inner wall surface and that contacts and separates from the fixed contact in accordance with the moving position of the movable piece. In the structure of a control switch for an automatic transmission, the above-mentioned body is formed of a resin molded product and the inside of the body is formed.
An arc-shaped recess is formed on the wall and at least one
Inserting a conductive plate whose section is wider than the width of the recess into the body
Buried so that the conductive plate is exposed in the recess, and
The fixed contact protrudes from the part of the conductive plate exposed in the recess
With the fixed contact protruding tip at approximately the same height as the inner wall surface.
It is set to be .

[0006]

[0007]

According to the invention of claim 1, the number of parts is small,
Since the fixed contact does not need to be swaged and the terminal plate and the fixed contact do not need to be soldered, the work man-hour is simplified and the reliability of conduction is high, and furthermore, the filling work of the sealant is unnecessary. Therefore, insulation failure due to filling error does not occur. In addition, since the fixed contact is projected and locked, the contact between the movable contact and the fixed contact can be made a point contact, and the contact reliability is improved.

Further , when the movable contact is slid, the amount of riding on the fixed contact is reduced, so that the movable contact can be slid smoothly, and as a result, the operation can be stabilized.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show an embodiment of a control switch for an automatic transmission, in which a body 1 is composed of two substantially fan-shaped cover bodies 1a and 1b made of a resin molded product such as a reinforced resin containing glass fiber. Be composed.

As shown in FIG. 2 (b), the cover body 1a has a fan-shaped concave portion 5 formed on the back side, and a main portion of the concave portion 5 has a through hole 3a penetrated by the rotating shaft 3 of the movable body 7. A communicating through-hole 4 is formed, and the opening peripheral portion of the through-hole 4 on the inner wall surface of the cover 1a is one step lower than the other bottom surface of the recess 5 and larger than the inner diameter of the through-hole 4 as shown in FIG. A recess 6 having an inner diameter is formed.

As shown in FIG. 3 (b), the cover 1b has a sector-shaped recess 8 formed on the inner wall surface similarly to the cover 1a.
A through-hole 9 communicating with a through-hole 3a penetrated by the rotating shaft 3 of the movable body 7 is formed in a main portion of the recess 8 so that the cover 1
As shown in FIG. 4, the through-hole 9 is located one step lower than the other bottom surface of the recess 8 on the inner peripheral wall of the through-hole 9 on the inner wall surface of the b.
The recess 10 having an inner diameter larger than the inner diameter is formed.

Further, arc-shaped recesses 11a ₁ ... 11 around the through holes 4 and 9 are formed on the inner wall surfaces of the cover bodies 1a and 1b.
b ₁ ... has plural rows formed concentrically with, these recesses 11a ₁ ..., 11b ₁ ... cover member 1a of the respective so as to correspond to the conductive plate 12a that is insert molded 1b
₁ ..., conductive plates 12a and disposed 12b ₁ ... end portion of the
₁ ..., 12b ₁ ... part a recess 11a ₁ of ..., 11b ₁ ...
It is exposed inside. The respective conductive plates 12a ₁ ..., 12b
₁ ... the recess 11a ₁ at an appropriate length ..., 11b ₁ ... fixed contacts 13a ₁ ... along the longitudinal direction of, 13b ₁ ... recess 11a ₁ ... are formed integrally, 11b ₁ ... opening of the That is, it is projected so as to be substantially flush with the inner wall surfaces of the cover bodies 1a and 1b. Also, the conductive plates 12a ₁ ..., 12b ₁ .
The terminal 15a ₁ ... the other end, 15b ₁ ... are provided integrally, the terminals 15a ₁ ..., 15b ₁ ... are projected outwardly from one end outer peripheral surface of the cover 1a, 1b. Thus pin 15a ₁ ..., 15b ₁ ..., conductive plate 12a ₁
, 12b ₁ ..., fixed contacts 13a ₁ ..., 13b ₁ ... are each fixedly held on the respective cover bodies 1a, 1b by insert molding. The cover body 1a is provided with a ridge 16 formed with a groove 14 for fitting rubber packing so as to extend along the outer periphery of the recess 5 and the recess 6 on the back surface, and a recess 17 for fitting the ridge 16 is formed. Cover body 1b
Formed on the inner wall surface.

As shown in FIG. 5, the movable body 7 has a bottomed narrow groove 18a whose longitudinal direction is the center of the through hole 3a of the rotating shaft 3 in the surface of the movable piece 2 and whose radial direction is the longitudinal direction. This narrow groove 1
The narrow groove 18b is opened in parallel with the narrow groove 8a and has a smaller longitudinal width dimension in the radial direction than the narrow groove 18a. The narrow groove 18b communicates with a narrow groove 18c opened on the back surface of the movable body 7. The narrow groove 18c is formed to have the same longitudinal width dimension as the narrow groove 18a. At the center of the narrow grooves 18a, 18b, 18c, round holes 20a, 20b are formed.
The coil springs 21a and 21b are inserted into a and 20b.

In the narrow grooves 18a and 18c, movable contact members 22a and 22c made of a conductive material formed substantially in an E shape are movably inserted, respectively.
a and 26b are press-fitted into one ends of coil springs 21a and 21b inserted in the round holes 20a and 20b. These movable contact 22a, and the movable contact 23 _1, 23 ₂ to respectively protrude outwardly at both ends shoulder 22c.

On the other hand, a movable contact 22b formed in a slightly small E-shape is movably inserted into the narrow groove 18b, and the movable contact 22b is provided at the other end of the coil spring 21b inserted in the round hole 20b. Press in the foot 26b. The movable contact 22b is caused to protrude the movable contact 23 ₃ on the opposite side of the middle foot 26b. When the movable body 7 incorporating the movable contact bodies 22a, 22b and 22c as described above is incorporated into the cover bodies 1a and 1b as shown in FIG.
The cover bodies 1a and 1b are fitted to each other so as to sandwich the cover. In this case, both ends of the rotating shaft 3 are covered with the cover 1.
a and 1b are rotatably fitted into recesses 6 and 10 around the openings of through holes 4 and 9 respectively. Also, the ridge 16 of the cover 1a is fitted into the recess 17 of the cover 1b,
a, 1b, the inner wall surface peripheral portions are in contact with each other, and the cover bodies 1a, 1b
The movable piece 2 of the movable body 7 is movably housed in the space formed by the concave portions 5 and 8 of b. Here, as a method of joining and fixing the fitting contact surfaces to seal the space, adhesion using an adhesive, welding using an ultrasonic welding machine, or the like is used. In particular, since the sealing performance using welding by an ultrasonic welding machine that can be uniformly sealed over the entire circumference is stable and the assembling workability is improved,
Particularly preferred. If a particularly high sealing property is required, a rubber packing 25 may be fitted into the groove 14 and the rubber packing 25 may be interposed between the recess 17 and the ridge 16.

The movable contact body 22a mounted on one surface of the movable piece 2 of the movable body 7 accommodated in the body 1 composed of the cover bodies 1a and 1b is resiliently provided by a coil spring 21a and provided at both ends. The movable contacts 23 ₁ and 23 ₂ are covered with the cover 1b.
Is slidably disposed in the recess 11b _1, 11b ₃ that is provided on the side, also the movable contact member 22b is resiliently by the coil spring 21b, the movable contact 23 ₃ is provided at the center on the cover member 1b side It is slidably positioned within the recess 11b ₂ which is provided. Here, the movable contacts 23 ₁ , 23 of the movable contact body 22a
Fixed contact pairs corresponding to ₂ 13b ₁ and 13b _5, 13
b ₂ and 13b _6, and the movable contact of the movable contact 22b 2
3 ₃ corresponding to the fixed contact 13b _3, 13b ₄ constitute a common contact to be described later.

The concave movable contact 22c that is mounted on the other side of the movable piece 2 which is provided with a movable contact 23 _1, 23 ₂ which is provided at both ends is resiliently by the coil spring 21c to the cover body 1a side Tokoro 11a _1, 11a ₂ in is slidably disposed. Wherein the fixed contact pairs corresponding to the movable contact 22c to the _{13a 1, 13a 2, 13a 3} , 13a 4, 13a 5
And the combination.

Thus, when the rotating shaft 3 of the movable body 7 is rotated, the movable piece 2 moves, and the movable contacts 23 ₁ , 23 ₂ , 23 ₃ which slide in the recesses 11a ₁ , 11b ₁ ,. .., 13b ₁ ... By the rotation of the angle, the movable contacts 2a of the movable contact body 22a are brought into contact with the fixed contacts 13a ₁ .
An energizing circuit is formed by 3 ₁ and 23 ₂ , and the movable contact 22
The energizing circuit formed by the pair of movable contacts 23 ₁ and 23 ₂ is electrically connected to the movable contact body 22b through the coil spring 12b, and the fixed contacts 13b ₃ and 13b contact with the movable contact 23 ₃ of the movable contact body 22b. the 13b ₄ side would be a common contact circuit. This common contact circuit enables the switch to be divided into two fixed contacts.

Here, the contact pressure is obtained by the resilient force of the coil springs 12a and 12b so that a reliable electric connection can be made and the movable contacts 23 ₁ can slide smoothly. In the control switch for the automatic transmission according to the present invention, a metal mounting plate or the like is used in consideration of vibration and the like when fixing to the automatic transmission. Reference numerals 19 and 24 are mounting holes provided in the cover bodies 1a and 1b, respectively.

[0020]

According to the first aspect of the present invention, the container is made of a resin molded product.
Forming an arc-shaped recess on the inner wall surface of the vessel
A conductive plate at least partially wider than the width of the recess
The conductive plate is embedded in the recess by insert molding so as to be exposed in the recess , and a fixed contact is formed to protrude from a portion of the conductive plate exposed in the recess , and the protruding tip of the fixed contact is formed on the inner wall surface.
Since the height is set to be almost the same as that of the above, the number of parts is small, the fixed contacts are not caulked and fixed, and the soldering between the terminal plate and the fixed contacts is not required, which simplifies the work steps. In addition, since the reliability of conduction is high and the work of filling the sealant is unnecessary, insulation failure due to a filling mistake does not occur. In addition, since the fixed contact is projected and locked, the contact between the movable contact and the fixed contact can be made into a point contact, which has the effect of improving the contact reliability. More conductive
Since part of the plate is formed wider than the width of the recess,
Insert molding of resin plate into resin molding in stable condition
There is an effect that can be.

In addition, when the movable contact is slid, the amount of riding on the fixed contact is reduced, so that the movable contact can be slid smoothly and the operation can be stabilized as a result.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2A is a left side view of a cover 1a according to the first embodiment. (B) is a right side view of the cover 1a.

FIG. 3A is a left side view of a cover 1b according to the first embodiment. (B) is a right side view of the cover 1b.

FIG. 4 is an exploded sectional view of the same.

FIG. 5A is a front view of the movable body according to the first embodiment. (B)
FIG. 2 is a side sectional view of the movable body of the above. FIG. 3C is a cross-sectional view in which a part of a movable piece of the movable body is omitted. (D) is a rear view of the same movable body. (E) is A in FIG.
It is -A 'sectional drawing. (F) is a cross-sectional view of the rotating shaft of the movable body.

FIG. 6 is a side view of a state where the movable body is attached to the cover body 1a according to the first embodiment.

[Explanation of symbols]

Reference numeral 1 denotes a body 1a, 1b Cover body 11a ₁ , 11b ₁ ... recess 12a ₁ , 12b ₁ ... conductive plate 13a ₁ , 13b ₁ ... fixed contact

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-59-12517 (JP, A) JP-A-63-179625 (JP, U) JP-A-59-55840 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] An automatic transmission includes a body provided with a fixed switching contact on an inner wall surface for performing switching setting in accordance with a neutral position, a reverse position, a drive position, and the like; A rotating shaft mounted on the body so as to be rotatable in a direction parallel to the inner wall surface, and a movable shaft integrally connected to the rotating shaft and moving about the rotating shaft so as to be parallel to the inner wall surface; And a movable contact, which is provided on a surface of the movable piece opposing the inner wall surface and moves and comes into contact with and separates from the fixed contact according to the moving position of the movable piece. In the structure, the above-mentioned container is formed of a resin molded product, and a circle is formed on the inner wall surface of the container.
An arc-shaped recess is formed, and at least a part of the recess is formed.
Inserting a conductive plate wider than the width into the body by insert molding
Embedded so that the conductive plate is exposed in the recess , and in the recess
A fixed contact is projected from the part of the conductive plate exposed to
Ensure that the protruding tip of the constant contact is approximately the same height as the inner wall surface
Structure of control switch for an automatic transmission, characterized in that the set.