JP2002174329A - Inhibitor switch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and accurately attach an inhibitor switch. SOLUTION: A case fixedly supporting a resin-made pole panel having a fixed contact and movably supporting a movable panel having a movable contact is provided, and a bracket part 19 fixed to a manual value body 39 is provided in the case. A tongue part 11 protruding above the bracket part 19 of the case is provided on the pole panel, and a reference pin 13 for positioning the manual valve body 39 and the inhibitor switch is provided in the tongue part 11. A positioning reference hole 55 fitting in the reference pin 13 is provided in the manual valve body 39, a protruding part 59 for positioning between the bracket part 19 and it is provided in the tongue part 11 at a position corresponding to the reference pin 13 and the reference hole 55, and a hole part 61 fitting in the protruding part 59 is provided in the bracket part 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inhibitor switch for detecting a shift position of an automatic transmission.

[0002]

2. Description of the Related Art As a conventional inhibitor switch, there is, for example, a switch shown in FIG. 11 described in Japanese Patent Application Laid-Open No. Hei 10-134672. The inhibitor switch 101 includes a pole plate 103, a movable plate 105, and a case 107.
And a bracket 109.

The pole plate 103 has a plurality of fixed contacts 1 on its lower surface.
11 is provided. The pole plate 103 is provided with a reference hole 112 into which a positioning pin of a jig is inserted when the pole plate 103 is fixed in a transmission case of the automatic transmission.

The movable plate 105 is movable with respect to the pole plate 103 and has a movable contact 113. The movable contact 113 includes a plurality of contact arms 115 corresponding to the fixed contacts 111, and each contact arm 115 is slidable on each of the fixed contacts 111. The case 107 fixedly supports the pole plate 103 by caulking and movably supports the movable contact 105.

The bracket 109 is connected to the case 107
And a fastening hole 117 for fastening to the transmission case. The operation unit 110 includes:
An engaging portion 119 is provided which is movable with the movable plate 105 by engaging the movable plate 105 and is connected to a manual valve of the automatic transmission. The operation unit 110 is supported by the guide block 121,
Is movable along the rail 123 of the pole board 103.

Therefore, when the driver operates the shift lever, the manual valve and the operation unit 110 are interlocked via the engagement unit 119, and the movable plate 105 moves with the movement of the operation unit 110. The movement of the movable plate 105 selectively conducts the plurality of fixed contacts 111 via the movable contacts 113, and the shift position can be accurately detected by the conduction.

[0007]

Incidentally, in such an inhibitor switch, it is necessary to accurately determine the position of the manual valve and mount it in order to accurately detect the shift position. Conventionally, this mounting is performed as follows.

At the time of mounting, the manual valve is set so as to be in the neutral N position, and the inhibitor switch 101 is also set so as to detect the neutral N position. In this state, the reference hole 112 is inserted into the positioning pin of the jig, and the inhibitor switch 101 is positioned. At the same time, the pin of the interlocking portion on the manual valve side is engaged with the engaging portion 119. Next, a bolt is fastened to the fastening hole 117 of the bracket 109, and the inhibitor switch 101 is fastened and fixed to the transmission case. As described above, the neutral N detection position of the inhibitor switch 101 and the neutral N position of the manual valve are matched, and accurate shift position detection can be performed by accurate mounting.

However, in the above-mentioned mounting, since the positioning of the inhibitor switch 101 is performed using a jig, there has been a problem that the positioning is complicated.

[0010] It is an object of the present invention to provide an inhibitor switch that can be attached while performing alignment easily.

[0011]

According to a first aspect of the present invention, there is provided a resin pole plate having a fixed contact, and a movable contact slidably contacting the fixed contact, the movable pole being movable with respect to the pole plate. A movable plate, and a case that fixedly supports the pole plate and movably supports the movable plate, and an inhibitor switch that detects a shift position of the automatic transmission by the fixed contact and the movable contact. A bracket for fixing to a component, a tongue protruding above the bracket of the case on the pole plate, and positioning the mating component and the inhibitor switch on one of the tongue and the mating component. A reference pin for positioning is provided on the other side, and a reference hole for positioning to be fitted to the reference pin is provided. One of the tongue portion and the bracket portion is located at a position corresponding to the reference pin and the reference hole. Provided projections for determining location, in the other, characterized in that a hole portion fitted to the projection.

According to a second aspect of the present invention, there is provided the inhibitor switch according to the first aspect, wherein the protrusion and the hole are loosely fitted in the moving direction of the movable plate, and are accurately positioned in the direction perpendicular to the movable plate. It is characterized in that the dimensions are set to fit.

According to a third aspect of the present invention, there is provided the inhibitor switch according to the first or second aspect, wherein the tongue has a hollow portion through which a fastener for fixing the bracket portion to the counterpart is penetrated. The bracket is fastened and fixed to the mating part on both sides of the reference pin or the reference hole.

The invention according to claim 4 is the inhibitor switch according to any one of claims 1 to 3, wherein the protrusion is
The hole is provided in the tongue, and the hole is provided in the bracket. An edge is provided at an edge of the bracket, and the projection is formed by the radius when the tongue is attached to the bracket and moved. Is guided on the bracket part.

[0015]

According to the first aspect of the present invention, there is provided a resin-made pole plate having a fixed contact, a movable plate having a movable contact slidable on the fixed contact and movable with respect to the pole plate, A case for fixedly supporting the pole plate and for movably supporting the movable plate, wherein a shift position of the automatic transmission can be detected by the fixed contact and the movable contact.

In addition, the case is provided with a bracket for fixing to a mating part, the pole plate is provided with a tongue protruding above the bracket of the case, and one of the tongue and the mating part is provided with the mating part. A reference pin for positioning the inhibitor switch is provided, and a reference hole for positioning to be fitted to the reference pin is provided on the other side.By mating the reference pin and the reference hole, a mating component and the inhibitor switch are provided. Can be easily positioned and mounted.

Further, at one of the positions corresponding to the reference pin and the reference hole, a protrusion is provided on one of the tongue and the case for positioning the other, and a hole fitted to the protrusion is provided on the other. Even if some external force acts on the tongue due to the operator gripping strongly when installing the inhibitor switch,
The tongue can be accurately positioned with respect to the case. For this reason, it is possible to suppress the deformation of the tongue projecting above the bracket portion of the case relative to the pole plate fixedly supported by the case, and to adjust the position of the positioning reference pin or reference hole provided on the tongue. It can be held accurately, and the positioning between the mating component and the inhibitor switch can be performed accurately and reliably.

According to a second aspect of the present invention, in addition to the effects of the first aspect, the protrusions and the holes are loosely fitted in the moving direction of the movable plate, and are fitted with high precision in a direction orthogonal to the movable plate movement. The projections provided on one of the tongue and the bracket and the holes provided on the other can be easily fitted to each other, so that the mounting operation can be easily performed. be able to.

According to a third aspect of the present invention, in addition to the effects of the first or second aspect, the tongue has a lightened portion through which a fastener for fixing the bracket portion to the counterpart is penetrated. Since the part is fastened and fixed to both sides of the reference pin or the reference hole with respect to the counterpart, the fitting of the reference pin and the reference hole allows the reference pin and the reference hole while accurately positioning the counterpart and the inhibitor switch. Can be reliably held by fastening and fixing.

According to a fourth aspect of the present invention, in addition to the effects of any one of the first to third aspects, the projection is provided on the tongue, and the hole is provided on the bracket. When the tongue is attached to the bracket and the tongue is attached to the bracket, the protrusion can be guided on the bracket by the radius, so that the pole plate is fixedly supported on the case. In doing so, the protrusion of the tongue can be easily fitted into the hole of the bracket, and the mounting operation can be performed extremely easily.

[0021]

FIG. 1 is a perspective view of an inhibitor switch according to an embodiment of the present invention. As shown in FIG. 1, the inhibitor switch 1 is arranged and mounted upright as shown in FIG. 1 in a transmission case where oil of the automatic transmission scatters. The inhibitor switch 1 includes a pole board 3, a movable board 5, and a case 7. The pole board 3 is fixedly supported on the case 7 by caulking a claw 9 or the like. Although the caulking by the claw 9 is shown at only one place in FIG. 1, similar caulking and fixing are performed at several other places.

The pole plate 3 is provided with a tongue 11. A reference pin 13 protrudes from the tongue 11.
The movable platen 5 is disposed between the case 7 and the pole plate 3, is movably supported by the case 7, and is movable with respect to the pole plate 3 in the direction of arrow A.

A drive pin 15 projects from the movable platen 5 and projects from a window 17 of the case 7. The drive pin 15 is connected to an interlocking portion of a manual valve (not shown). The interlocking portion of the manual valve is arranged to move in the direction of arrow A, which is the direction of movement of the movable platen 5.

The case 7 is formed by press-molding a metal plate, and a bracket 19 is provided integrally. The bracket portion 19 is formed to be bent into a crank-shaped cross section for securing rigidity, and a rounded portion 23 is provided at the bent edge. The bracket portion 19 is for fastening and fixing to a mating component, for example, a manual valve body of a manual valve. For this reason, the bracket portion 19 is provided with three fastening holes 21 in the present embodiment. The fastening hole 21 is a slightly elongated hole in the direction of the arrow A. The bracket 19 is located below the tongue 11, and the tongue 11 protrudes above the bracket 19 of the case 7.

FIG. 2 is a front view of the pole board 3.
As shown in FIG. 2, a plurality of fixed contacts S2, VB, S4, S1, S3 are mounted on a base 25 made of an insulating resin.
Is attached. Each fixed contact S2, VB, S4
S1, S3 are grooves 27, 29, 3 provided in the base 25.
1, 33, 35 are fixed. Grooves 27, 29, 3
The fixed contacts S2, VB, S4, S1 and S3 are formed in grooves 2 in a concave state in a direction perpendicular to the plane of FIG.
7, 29, 31, 33, 35 are fixed to the inner wall.
The base plate 25 of the pole plate 3 has a plurality of concave portions 37 for caulking.
Is provided. A plurality of claw portions 9 for caulking are provided on the case 7 corresponding to the recesses 37 for caulking, and the plurality of claw portions 9 are caulked in a state in which they are engaged with the respective recesses 37. The pole board 3 is fixedly supported by the case 7 as shown in FIG.

FIG. 3 is an enlarged perspective view of the vicinity of the tongue 11 and the bracket 19 as viewed from the direction of the arrow SB in FIG.

As shown in FIGS. 2 and 3, the tongue 11 has
A lightening hole 43 as a lightening portion through which a boss 57 of the manual valve body 39 is fitted and a bolt 41 serving as a fastener for fixing the bracket portion 19 to the manual valve body 39 is passed. have. The lightening hole 43 is formed larger and circularly than the fastening hole 21 of the bracket 19. The tongue 1
1 is further provided with lightening portions 45 and 47 on the upper surface on one side and the lower surface on the other side of the lightening hole 43. This lightening part 4
Numerals 5 and 47 are for simplifying the mold structure at the time of forming the pole plate 3. The hollow portions 45 and 47 are formed so that the hollow holes 43 can be formed only by separating the molding die in the direction of the arrow in FIG. 4
7 extends from the lightening hole 43 on the upper and lower surfaces of the tongue 11 to the end in the opposite direction.

The fastening hole 21 of the bracket 19 is formed in a long hole shape, and the width of the movable platen 5 in the direction perpendicular to the movement corresponds to the diameter of the shaft of the bolt 41 for fastening. The rattling in the direction orthogonal to the movement of No. 5 is suppressed. The fastening holes 21 are provided at predetermined intervals on a mounting reference line 49 parallel to the arrow A direction which is the moving direction of the movable platen 5 in FIG.
Are fixed to the manual valve body 39 on both sides of the reference pin 13. The both sides of the reference pin 13 correspond to the reference pin 13 in a direction along the reference line 49.
Are on both sides. When the tongue 11 is provided with a reference hole instead of the reference pin 13, the bracket 19 is fastened and fixed to the manual valve body 39 on both sides of the reference hole. Reference line 4 on both sides of the reference hole
9 on both sides sandwiching the reference hole.

The manual valve body 39 is provided with a screw hole 53 corresponding to the fastening hole 21 on a line 51 parallel to the line 49. The manual valve body 39 is provided with a positioning reference hole 55 that is fitted to the reference pin 13 at a position corresponding to the reference pin 13.

Accordingly, the reference pin 13 of the inhibitor switch 1 is fitted into the reference hole 55 of the manual valve body 39 to position the two, and the bolts 41 are respectively inserted from below the fastening holes 21 of the bracket 19. ,
By fastening to the screw holes 53, the inhibitor switch 1 can be securely fastened and fixed in a state where the inhibitor switch 1 is positioned with respect to the manual valve body 39. Moreover, the bracket 19 is positioned on both sides of the reference pin 13 (or the reference hole) with respect to the manual valve body 39 while accurately positioning the manual valve body 39 and the inhibitor switch 1 by fitting the reference pin 13 and the reference hole 55. The reference pin 13 and the reference hole 55
Can be reliably held by fastening and fixing.

FIG. 4 is a cross-sectional view taken along the line SC-SC in FIG. 3. As shown in FIG. 4, each of the screw holes 53 is provided in a boss portion 57 provided in the manual valve body 39. Have been. The reason why the boss portion 57 is provided to form the screw hole 53 is that the manual valve body 3
This is for avoiding a spool or the like formed in the inside 9.
The tip of the boss 57 contacts the bracket 19 on the fastening hole 21.

In the embodiment of the present invention, a projection 59 is provided on the tongue 11 at a position corresponding to the reference pin 13 and the reference hole 55, and a projection is provided on the bracket 19, as shown in FIG. A hole 61 that fits into the portion 59 is provided.

FIG. 5 corresponds to the view taken along the line SD-SD in FIG.
(A) is a sectional view before assembling the case 7 and the pole board 3, (b) is a sectional view during the assembling, (c) is a sectional view after the assembling, and FIG. It is sectional drawing of a part. In FIG. 6, the vertical direction is the moving direction A of the movable platen 5.

As shown in FIG. 4, FIG. 5, and FIG.
Has a drum-shaped cross section having a curved surface in the direction perpendicular to the movement of the movable platen 5 when viewed from above, and the hole 61 has a substantially rectangular shape. The protrusion 59 and the hole 61 have a gap therebetween in the moving direction A of the movable platen 5 and are set to dimensions that allow loose fit. The protrusion 59 and the hole 61 are set to have the same dimensions so as to be fitted with high accuracy in the direction orthogonal to the movement of the movable platen 5. Even in such a dimensional relationship, the protrusions 59 have a structure in which the protrusions 59 are in line contact with the holes 61 in the direction orthogonal to the movement of the movable platen 5, so that they can be easily fitted to each other.

When assembling the pole plate 3 to the case 7, the concave portion 37 of the base 25 is engaged with the plurality of claw portions 9 (not bent before crimping) of the case 7 as described above. The pole board 3 is fitted into the case 7. At this time, as shown in FIGS.
9 will be assembled.

In FIG. 5A, the tongue 11 attempts to move onto the bracket 19. At this time, the projection 5 of the tongue 11
9 comes into contact with the round portion 23 of the bracket portion 19 and the tongue portion 1
The protrusion 59 is brought into contact with the round portion 23 by the force of pushing the bracket 1 onto the bracket portion 19 and the round portion 2
By the guide 3, the protrusion 59 rides on the bracket 19 as shown in FIG. Since the tongue portion 11 has the lightening hole 43 and the lightening portions 45 and 47, FIG.
Therefore, in the operation as shown in FIG.

When the tongue 11 is further pushed onto the bracket 19, the projection 59 falls into the hole 61 of the bracket 19, as shown in FIG.
9, the tongue 11 is positioned. The protrusion 59 is shown in FIG.
The state shown in FIG. 5B is moved from the state shown in FIG.
When the user falls down, a snapping sound is generated, and it can be easily confirmed that the tongue 11 has been assembled to the bracket 19 at the correct position. At this time,
The protrusion 59 and the hole 61 are fitted as shown in FIG. By this fitting, the positioning of the tongue 11 with respect to the bracket 19 in the direction orthogonal to the movement of the movable platen 5 can be performed accurately.

In this state, the claws 9 are swaged in the concave portions 37 of the base 25, and the pole plate 3 is fixedly supported on the case 7. In this fixed state, the inhibitor switch 1 is fastened and fixed to the manual valve body 39. At the time of this fixing, the reference pin 13 is fitted into the reference hole 55 of the manual valve body 39, and the inhibitor switch 1 is positioned with respect to the manual valve body 39.

In this positioning state, the bolt 41 is inserted from below the fastening hole 21 and screwed into each screw hole 53 as described above, and the bracket 19 is fastened and fixed to the manual valve body 39. By the positioning and fixing based on the reference pin 13, it is possible to maintain the exact parallelism between the attachment reference line 49 of the inhibitor switch 1 and the line 51 of the manual valve body 39, and to perform the accurate attachment of both. .

In this mounting, even if an operator grips the bracket 19 and handles the inhibitor switch 1 and applies a strong force to the tongue 11 during the mounting, the tongue 11 is
9 fits into the hole 61 of the bracket portion 19 to accurately position the movable platen 5 in the direction orthogonal to the movement.
The tongue 11 does not bend and the reference pin 13 does not move, and accurate mounting by positioning based on the reference pin 13 can be reliably performed.

FIG. 7 is a sectional view showing a comparative example, and corresponds to the view taken along the line SD-SD in FIG. In FIG. 7, unlike the embodiment of the present invention, no positioning projection is provided on the lower surface of the tongue 11. Therefore, when the worker grips the bracket portion 19 and applies a force to the tongue portion 11 at the time of assembling, FIG.
The tongue 11 may be bent in the direction of arrow B. Particularly, as shown in FIG. 3, a boss 57 having a screw hole 53 formed in the tongue 11.
Holes 43 for fitting the holes, and lightening portions 45 and 4
7 is provided, there is a possibility that it is easily bent in the direction of arrow B in FIG.

When the tongue 11 is bent as described above, the reference pin 1
The center position C1 of C3 is shifted like C2 or C3. In this shifted state, the reference pin 13 is fitted into the reference hole 55, and the bolt 41 is fastened to fix the bracket 19 to the manual valve body 39. The mounting state of the switch 1 shifts, and the parallelism of the line 49 with the line 51 shifts. If the parallelism between the line 51 and the line 49 deviates, the moving direction of the interlocking portion of the manual valve will not be parallel to the moving direction A of the movable platen 5, and accurate operation may be difficult.

On the other hand, in the embodiment of the present invention, the projection 59 of the tongue 11 is fitted and positioned in the hole 61 of the bracket 19 as described above, so that the reference pin 1
The center C1 of the line 3 does not deviate, and as described above, by accurate positioning, the assembly can be fixed while maintaining the parallelism between the lines 49 and 51, and accurate operation can be reliably obtained.

The movable platen 5 is as shown in FIGS. The movable platen 5 is formed of resin, and each of the fixed contacts S
2, a movable contact 63 slidable on VB, S4, S1, S3
have. The movable contact 63 is formed of stainless steel or the like, and has contact arms 67, 69, 71,
73 and 75 are alternately provided in a cantilever manner, and have a so-called W-shaped arrangement.

To fix the movable contact 63 to the movable plate 5, a fixed portion 65 of the movable contact 63 is fitted to a pin 77 fixed to the movable plate 5, and the fixed plate 79 is fixed to the fixed pin 77.
This is done by caulking.

When the driver operates the shift lever to operate the manual valve, the movable platen 5 moves in the direction of arrow A via the drive pin 15 shown in FIG. 1, and the fixed contacts S2, VB, S4 S1 and S3 are selectively turned on, and the shift position can be detected. This operation can be performed accurately by the accurate mounting of the inhibitor switch 1 and the manual valve body 39 as described above.

FIG. 10 shows fixed contacts S2, VB, S4, S
5 is a table showing the relationship between the selective conduction of S1 and S3 and the shift position. In the chart of FIG. 10, a portion indicated by a circle represents selective conduction. By such conduction, the parking range P, the reverse range R, the drive range D, the third gear, the third gear, the second gear, the first gear, and the like can be accurately detected.

In this embodiment, the protrusion 59 is provided on the tongue 11, but the protrusion 59 may be provided on the bracket 19 and the hole 61 may be provided on the tongue 11. . Although the reference pin 13 is provided on the tongue 11, the reference pin 13 may be provided on the manual valve body 39, and the reference hole 55 may be provided on the tongue 11.
The inhibitor switch 1 can be attached to the mission case side.

[Brief description of the drawings]

FIG. 1 is a perspective view of an inhibitor switch according to an embodiment of the present invention.

FIG. 2 is a front view of the pole board according to the embodiment.

FIG. 3 is a perspective view showing a relationship between a bracket portion and a tongue portion and a manual valve body as viewed in the direction of arrow SB in FIG. 1 according to the embodiment;

FIG. 4 is a cross-sectional view taken along the line SC-SC of FIG. 3 according to the embodiment;

5A and 5B are cross-sectional views corresponding to the embodiment taken along line SD-SD in FIG. 3, wherein FIG. 5A is a sectional view before assembling, FIG. 5B is a sectional view during assembling, and FIG. .

FIG. 6 is a cross-sectional view showing fitting of a protrusion and a hole according to the embodiment.

FIG. 7 is a sectional view showing a comparative example.

FIG. 8 is a side view of the movable platen according to the embodiment.

FIG. 9 is a front view of a movable platen according to the embodiment.

FIG. 10 is a table showing a relationship between conduction of fixed contacts and a shift position according to the embodiment;

FIG. 11 is an exploded perspective view of an inhibitor switch according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Inhibitor switch 3 Pole board 5 Movable board 7 Case 11 Tongue part 13 Reference pin 19 Bracket part 21 Fastening hole 23 Round part 25 Base 43 Lightening hole (lightening part) 53 Screw hole 41 Bolt (fastener) 55 Reference hole 39 Manual valve body (part) 59 Protrusion 61 Hole

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) // B60K 23/00 B60K 23/00 HF term (reference) 3D036 CA02 CA15 GH02 GJ01 3J001 FA03 GA01 HA09 JA03 JD02 KA12 KA14 KB01 3J552 MA01 NA01 PA64 QC07 QC10 VA62W 5G052 AA12 BB04 HC03

Claims (4)

[Claims] 1. A resin plate having a fixed contact, a movable plate having a movable contact slidable on the fixed contact and movable with respect to the plate, and supporting and supporting the plate. A case for movably supporting the movable plate, wherein the fixed contact and the movable contact detect a shift position of the automatic transmission. A tongue protruding from the bracket of the case, a reference pin for positioning the mating part and the inhibitor switch is provided on one of the tongue and the mating part, and the reference pin is provided on the other side. Provide a positioning reference hole for fitting into the, and at one of the tongue portion and the bracket portion at a position corresponding to the reference pin and the reference hole, provide a projection for positioning between them, and on the other side Inhibitor switch, characterized in that a hole portion fitted to the projection. 2. The inhibitor switch according to claim 1, wherein the protrusion and the hole have a size that fits loosely in a direction of movement of the movable plate and fits with high accuracy in a direction perpendicular to the direction of movement of the movable plate. An inhibitor switch characterized by being set. 3. The inhibitor switch according to claim 1, wherein the tongue portion has a lightening portion through which a fastener for fixing the bracket portion to the counterpart is penetrated. Is fixed to both sides of the reference pin or the reference hole with respect to the counterpart. 4. The inhibitor switch according to claim 1, wherein the protrusion is provided on the tongue, and the hole is provided on the bracket. An inhibitor switch, wherein an edge portion is provided on an edge, and the projection portion rides on the bracket portion and is guided by the radius portion when the tongue portion is attached to and moved relative to the bracket portion.