JPH09265869A - Inhibitor switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent damage to an ultrasonic welding part caused by torque which an operating lever receives, if a resin material is used in making the rotating shaft of an inhibitor switch device in order to weld the rotating shaft ultrasonically to the operating lever, by increasing the strength of the ultrasonic welding part and to prevent assembling errors by holding constant the relationship between the positions of a movable board and the operating lever. SOLUTION: A rotating shaft 71 has a torque receiving part 711 in which projecting parts 713, 714 are arranged in a gear shape, and an operating lever 9 has grooves 951, 952 into which the torque receiving part 711 is fitted and a welding hole 95. The rotating shaft 71 and the operating lever 9 are ultrasonically welded together at the torque receiving part 711. The width of one groove 951 provided in the operating lever 9 is set to be smaller than that of the other groove 952, and the width of the corresponding projecting part 713 of the torque receiving part 711 of the rotating shaft 71 is set to be smaller than that of the other projecting part 714.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inhibitor switch device mounted on an automatic transmission of a vehicle to detect a shift position.

[0002]

2. Description of the Related Art An inhibitor switch device according to the present invention is conventionally known as a switch mounted on an automatic transmission for a vehicle to detect a shift position.
There is a technique disclosed in Japanese Utility Model Publication No. 2-145736. FIG. 10 and FIG. 11 exemplify this prior art, and show a case b having a shaft supporting hole a and the shaft supporting hole a.
A rotary shaft c rotatably fitted to the rotary shaft c, and a movable plate d formed integrally with the rotary shaft c and swingable in the case b.
A movable contact e provided on the movable plate d, a fixed contact f provided so as to face the movable contact e, a base supporting the fixed contact f and joined to the case b to accommodate the movable plate d. g, and an operation lever i that is fixed to the rotating shaft c and is swingable on the outer wall surface h of the case b. Further, in the prior art, two stoppers h1 and h2 are provided on the outer wall surface h of the case b, and both end surfaces i2 and i3 of the operating lever i hit the stoppers h1 and h2 to cause the operating lever i to move. The swing range θ was regulated.

The rotary shaft c is made of a metal material and is insert-molded on the operating lever i. An O-ring j was attached to the rotary shaft c to seal the gap between the rotary shaft c and the case b. Furthermore, the rotation axis c
Was fixed to the movable plate d using a nut k. Also,
A connector g1 is integrally formed on the board g, and a terminal g2 electrically connected to the fixed contact f is provided in the connector g1.
Was provided.

In the inhibitor switch device having the above structure, the connecting hole i1 of the operating lever i is connected between the manual valve (not shown) of the automatic transmission or the shift lever (not shown) of the driver's seat. When the operation lever i swings in conjunction with the operation of the shift lever, the movable plate d inside the case b also swings together with the operation lever i, and the movable contact e
And the fixed contact f is switched in connection position. This fixed contact f is connected to a controller (not shown) via a terminal g2, and the controller was able to perform various controls by an ON / OFF signal corresponding to the shift position from the fixed contact f. .

[0005]

However, in order to ultrasonically weld the rotary shaft c of the above-described conventional inhibitor switch device to the operating lever i, the material of the rotary shaft c is changed from a metal material to a resin material. In addition, unless the strength of the ultrasonic welded portion is increased, there is a danger that the welded portion may be broken by the rotational torque received by the operation lever i. Further, in order to increase the strength of the ultrasonically welded portion, when the rotary torque receiving portion is formed in a simple gear shape, the relative positional relationship between the movable plate d and the operating lever i when assembled is It is possible that erroneous assembly may occur due to unevenness. By the way,
If the relative positional relationship between the movable plate d and the operating lever i is not proper when assembled, a problem arises in which the shift position cannot be accurately detected by the inviter switch device.

The present invention is to solve the above-mentioned problems, and in order to ultrasonically weld a rotary shaft to an operating lever,
When the material of the rotating shaft is changed from a metal material to a resin material, the strength of the ultrasonic welded portion is increased so that the welded portion is not destroyed by the rotational torque received by the operating lever, and the movable plate and the operation plate are operated. The purpose is to keep the relative positional relationship between the lever and the lever when assembling them to be constant to prevent incorrect assembly.

[0007]

In order to solve the above-mentioned problems, first of all, the invention according to claim 1 has a case having a shaft support hole, and a rotating shaft rotatably fitted in the shaft support hole. A movable plate, which is formed integrally with the rotary shaft and is swingable in a case, a movable contact provided on the movable plate, a fixed contact provided so as to face the movable contact, and a support for the fixed contact. In addition, in the inhibitor switch device including a base that is joined to the case to accommodate the movable plate, and an operation lever that is fixed to the rotation shaft and is swingable on the outer wall surface of the case, the rotation shaft and the operation are provided. One of the levers has a rotation torque receiving portion in which gear-shaped protrusions are arranged, and the other has a groove and a welding hole into which the rotation torque receiving portion fits. Ultrasonic welding at the rotating torque receiving part To provide the inhibitor switch apparatus.

According to the second aspect of the present invention, the width dimension of the one groove is set narrower than the width dimensions of the other grooves, and the corresponding width dimension of the convex portion of the rotary torque receiving portion is set. The present invention provides an inhibitor switch device in which the width is set narrower than the width dimension of other convex portions.

Further, according to the invention of claim 3, in each of the width dimensions W1, W2, W3 and W4, W3≤W1 <W4≤
Provided is an inhibitor switch device set to the relationship of W2.

[0010]

DETAILED DESCRIPTION OF THE INVENTION A first embodiment of the present invention will be described with reference to FIGS. The knob 1 is a case made of synthetic resin, and has a shaft support hole 11 for rotatably fitting a rotary shaft 21 described later. Reference numeral 2 is a movable plate made of synthetic resin such as PPS (polyphenylene sulfide) resin. The movable plate 2 has a metal shaft 23 inside.
The rotary shaft 21 formed by insert molding is integrally molded, and the movable contact 22 is attached to the lower part. Then, by tightening the nut 24 on the shaft 23, the rotating shaft 21
The operation lever 4 is fixed to the control lever 4, so that the operation lever 4 and the movable platen 2 are interlocked with each other and swing about the rotary shaft 21 as a fulcrum. Incidentally, the operation lever 4 is swingable on the outer wall surface 12 of the case 1, and the movable platen 2 is swingable in the case 1.

Reference numeral 3 is a base. The base 3 supports a fixed contact 31 provided facing the movable contact 22 by insert molding, integrally forms a connector 32, and is electrically connected to the fixed contact 31 in the connector 32. A terminal 33 is provided. The base 3 is joined to the case 1 using an ultrasonic welding technique, and the movable platen 2 is housed in a sealed space formed by the joining.
The gap between the rotary shaft 21 and the shaft support hole 11 is sealed by an O-ring 5 mounted on the rotary shaft 21.

Reference numeral 4 is an operation lever. The operating lever 4 has a connecting hole 43 in the shape of an elongated hole.
3 is connected between a manual valve (not shown) of the automatic transmission or a shift lever (not shown) of the driver's seat so that the operating lever 4 swings in conjunction with the operation of the shift lever. There is. The operation lever 4 is provided with a protrusion 42 on its lower surface 41. Further, the case 1 has a stopper 1 in which the protrusion 42 hits the outer wall surface 12 of the case 1.
3, 14 are provided. And the stoppers 13, 14
Is the height dimension H1 from the outer wall surface 12 to the height dimension H2 of the lower surface 41 of the operation lever 4 from the outer wall surface 12.
It is set lower. As a result, the operation lever 4 is configured such that only the protrusion 42 hits the stoppers 13 and 14 of the case 1.

The operating lever 4 is provided with a positioning portion 44.
have. The positioning portion 44 is provided for mounting the invitro switch device in an automatic transmission case (not shown) in an appropriate posture. More specifically, the positioning holes 34 are formed in the base 3 so as to correspond to the positioning portions 44.
Is provided. When the inhibitor switch device is attached to the automatic transmission case, first, the operation lever 4
A pin (not shown) is passed through both the positioning portion 44 of the base plate 3 and the positioning hole 34 of the base plate 3 to align them, and then a bolt (not shown) is inserted into the long hole 35 of the base plate 3 to mount it on the automatic transmission case. It is fixed.

Next, the operation of the first embodiment will be described.
First, when the driver of the vehicle operates the shift lever, the operating force is transmitted from the lower arm of the shift lever to the automatic transmission through the control cable, and the operation lever 4 of the inhibitor switch device is interlocked with the operation.
Is driven to swing on the outer wall surface 12 of the case 1. When the operation lever 4 swings, the movable platen 2 swings inside the case 1 in conjunction with it, and switches the connection position between the movable contact 22 and the fixed contact 31. Then, the fixed contact 31 inputs the ON / OFF signal corresponding to the shift position to the controller (not shown) via the terminal 33. Then, the controller performs various controls according to the input signal.

Next, a second embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. First, 6 is a case made of synthetic resin, and has a shaft support hole 61 for rotatably fitting a rotary shaft 71 described later. Reference numeral 7 denotes a movable plate made of synthetic resin such as PPS resin. The rotating shaft 71 is integrally molded and a movable contact 72 is attached to the lower portion. The rotary shaft 71 and the operating lever 9 are joined together by ultrasonic welding between them, whereby the operating lever 9 is connected.
And the movable platen 7 are interlocked with each other and swing about the rotation shaft 71 as a fulcrum. The operation lever 9 is a case 6
On the outer wall surface 62, and the movable plate 7 is swingable in the case 6.

More specifically, as shown in FIGS. 6 and 7, the movable plate 7 is provided with a rotary torque receiving portion 711 in which convex portions 713 and 714 are arranged in a gear shape on the rotary shaft 71, and one operation lever 9 is provided. As shown in FIGS. 6 and 8, grooves 951 and 952 into which the rotational torque receiving portion 711 is fitted and a welding hole 95.
Is provided. When ultrasonic welding is performed between the rotary shaft 71 and the operating lever 9, the rotary shaft 71 is first fitted into the shaft support hole 61 from the inside of the case 6, and then protruded to the outer wall surface 62 side of the case 6. The rotation torque receiving portion 711 is fitted with the grooves 951 and 952 of the operation lever 9 and the welding hole 95, and an ultrasonic welding head (not shown) is applied from the operation lever 9 side to apply ultrasonic waves to the rotation torque receiving portion 711. Grooves 952 and 952 of the operating lever 9 and the welding hole 9
It is welded to 5.

It should be noted that one groove 9 provided in the operating lever 9
The width dimension W1 of 51 is set narrower than the width dimension W2 of the other groove 952 as shown in FIG. In addition, the width dimension W3 of the convex portion 713 of the rotary torque receiving portion 711 of the corresponding rotary shaft 71 is set narrower than the width dimension W4 of the other convex portion 714 as shown in FIG. If these relationships are shown, the inequalities of W3 ≦ W1 <W4 ≦ W2 hold for each width dimension. By doing so, the relative positional relationship between the movable platen 7 and the operation lever 9 when they are assembled can be kept constant. That is, erroneous assembly can be prevented.

Reference numeral 8 is a base. The base 8 supports a fixed contact 81 provided to face the movable contact 72 by insert molding, integrally forms a connector 82, and electrically connects the fixed contact 81 inside the connector 82. A terminal 83 is provided. The base 8 is joined to the case 6 using an ultrasonic welding technique, and the movable plate 7 is housed in a sealed space formed by the welding.
The gap between the rotary shaft 71 and the shaft support hole 61 is sealed by the O-ring 10 mounted on the rotary shaft 71.

The operating lever 9 has a connecting hole 93 in the shape of an elongated hole. By connecting the connecting hole 93 between a manual valve of an automatic transmission or a shift lever at the driver's seat, the operating lever 9 is connected. Is designed to move in conjunction with the operation of the shift lever. The operation lever 9 has a projection 92 on its lower surface 91. Also, the case 6
Has stoppers 64 and 65 on the outer wall surface 62 thereof. The height of the stopper 64 from the outer wall surface 62 is determined by the lower surface 91 of the operation lever 9 and the outer wall surface 62.
It is set lower than the height dimension from. In addition, the stopper 6
Reference numeral 5 sets the height dimension from the outer wall surface 62 higher than the height dimension of the lower right 91 of the operating lever 9 from the outer wall surface 62. Therefore, the stopper 64 hits the protrusion 92 at the swing position P1 shown in FIG.
At the swing position P2, one side surface 97 of the operating lever 9 strikes.

The case 6 has the stoppers 64 and 65.
Different stoppers 63 and 66 are provided. The stoppers 63 and 66 can change the swinging position of the operating lever 9 from between swinging positions P1 and P2 shown in FIG. 3 only by changing the position of the projection 92A of the operating lever 9 without changing the case 6. It is provided to change between the swing positions P3 and P4 shown in FIG. More specifically, the operation lever 9 in which the position of the protrusion 92A is changed is provided with the protrusion 92A at the position shown by the broken line in FIG. 5 and the phantom line in FIGS. And the stopper 63
The height dimension from the outer wall surface 62 is set lower than the height dimension from the outer wall surface 62 of the lower surface 91 of the operation lever 9. The stopper 66 sets the height dimension from the outer wall surface 62 higher than the height dimension of the lower surface 91 of the operation lever 9 from the outer wall surface 62, and further from the center of the rotating shaft 71 to the stopper 63. The distance L1 is set shorter than the distance L2 to the stopper 64,
The stopper 63 is arranged on the locus along which the projection 92A provided on the operation lever 9A swings. Therefore, the stopper 63
The projection 92A abuts at the swing position P4 shown in FIG. 5, and the stopper 66 abuts the other side surface 98 of the operating lever 9 at the swing position P3.

Further, the operating lever 9 forms a strength adjusting portion 96 as shown in FIGS. 8 and 9. The strength adjusting unit 9
Reference numeral 6 is a portion for adjusting the strength of the operating lever 9. More specifically, the operating lever 9 is not destroyed by normal external force, and when an unexpected external force is applied, the strength adjusting section 96
It is necessary to set an appropriate strength in the strength adjusting unit 96 so that the strength is adjusted to break. Therefore, the molding portion of the strength adjusting portion 96 in the molding die of the operating lever 9 is a so-called nesting type die that can be partially replaced, and the nesting type is replaced by changing the die. The amount of lightening is adjusted to finely adjust the strength of the strength adjusting portion 96.

Further, the operating lever 9 has a positioning portion 94.
have. The positioning portion 94 is provided to mount the inhibitor switch device on an automatic transmission case (not shown) in an appropriate posture. More specifically, a positioning hole 84 is formed in the base 8 so as to face the positioning portion 94.
Is provided. When the inhibitor switch device is attached to the automatic transmission case, first, the operation lever 9
After positioning by inserting a pin (not shown) into both the positioning portion 94 of the base plate 8 and the positioning hole 84 of the base plate 8, a bolt (not shown) is inserted into the long hole 85 of the base plate 8 to attach it to the automatic transmission case. It is fixed. The operation of the second embodiment is the same as that of the first embodiment, and the description thereof is omitted.

[0023]

As described above, according to the present invention, one of the rotary shaft and the operating lever has the rotary torque receiving portion in which the convex portions are arranged on the gear, and the other is the groove into which the rotary torque receiving portion is fitted. Since the rotary torque receiving portion is ultrasonically welded between the rotary shaft and the operating lever, the rotary shaft is made of a metal so as to be ultrasonically welded to the operating lever. When the material is changed to a resin material, the strength of the ultrasonic welded portion can be increased so that the welded portion is not broken by the rotational torque received by the operation lever. In addition, the width dimension W1 of the one groove is
Since the width dimension W3 of the other groove is set narrower than the width dimension W2 of the other groove, the corresponding width dimension W3 of the convex portion of the rotary torque receiving portion is set narrower than the width dimension W4 of the other convex portion. It is possible to prevent the erroneous assembly by always keeping the relative positional relationship between the two and the operating lever when assembling them.

[Brief description of drawings]

FIG. 1 is a plan view showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of the arrow shown in FIG.

FIG. 3 is a plan view showing a second embodiment of the present invention.

FIG. 4 is a cross-sectional view taken along the line BB of FIG.

FIG. 5 is a plan view of the operation lever shown in FIG. 3 in which the position of the protrusion is changed.

FIG. 6 is a perspective view of a movable plate and an operation lever shown in FIG.

7 is an enlarged perspective view of a rotation torque receiving portion of the movable platen shown in FIG.

FIG. 8 is an enlarged plan view of the operating lever shown in FIG. 3 as seen from the lower surface side.

9 is a cross-sectional view taken along the line CC of FIG.

FIG. 10 is an exploded perspective view showing a conventional technique.

11 is a cross-sectional view of the prior art shown in FIG.

[Explanation of symbols]

 1,6 Case 2,7 Movable plate 3,8 Base 4,9 Operating lever 5,10 O-ring 11,61 Shaft support hole 12,62 Outer wall surface 13,14,63,64,65,66 Stopper 21,71 Rotation Shaft 22,72 Movable contact 23 Shaft 31,81 Fixed contact 41,91 Lower surface 42,92,92A Protrusion

Claims (3)

[Claims] 1. A case (6) having a shaft support hole (61).
A rotary shaft (71) rotatably fitted in the shaft support hole (61), and a movable plate (7) integrally formed with the rotary shaft (71) and swingable in the case (6). ), A movable contact (72) provided on the movable plate (7), and the movable contact (7)
2) a fixed contact (81) provided to face the fixed contact (81), a base (8) supporting the fixed contact (81) and joined to the case (6) to accommodate the movable plate (7), An inhibitor switch device comprising an operating lever (9) fixed to a rotating shaft (71) and swingable on an outer wall surface (62) of the case (6), comprising: the rotating shaft (71) and an operating lever (9). 9) has a rotation torque receiving portion (711) in which one of the convex portions (713, 714) is arranged in a gear shape, and the other has grooves (951, 952) into which the rotation torque receiving portion (711) fits; An inhibitor switch device having a welding hole (95) and ultrasonically welding between the rotary shaft (71) and the operating lever (9) at the rotary torque receiving portion (711). 2. The invention according to claim 1, wherein the width dimension W1 of the one groove (951) is set to the other groove (95).
It is set narrower than the width dimension W2 of 2), and the convex portion (713) of the rotary torque receiving portion (711) corresponding to this is set.
Inhibitor switch device, in which the width dimension W3 is set narrower than the width dimension W4 of the other protrusions (714). 3. The invention according to claim 1 or 2, wherein W3 ≦ W in each of the width dimensions W1, W2, W3 and W4.
The inhibitor switch device set to the relationship of 1 <W4 ≦ W2.