JP2012074310A - Inhibitor switch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inhibitor switch device which can be mounted to a mission case while a mounting face is reversed, and which can have improved versatility.SOLUTION: The inhibitor switch device for detecting a gear change position of a select lever based on an electrical circuit comprises a terminal board 1, on which a contact plate 2 is formed at a predetermined portion; an operation part 3, on which an insertion hole 3aa, in which a shaft member 8 interlocked with the select lever of a vehicle, is formed; a movable contact 4; and a cover member 5 mounted to the terminal board 1 while covering the contact plate 2 and the operation part 3 for almost tightly seal the contact plate 2 and the operation part 3. The insertion hole 3aa of the operation part 3 has an inside diameter dimension such that a central portion A in an insertion direction of the shaft member 8 is approximately coincident with an outside diameter of the shaft member 8, and is opened while tapered faces B1, B2 are formed from the central portion A in a vertical direction.

Description

  The present invention relates to an inhibitor switch device for forming an electric signal by sliding a movable contact along a contact plate in conjunction with a select lever and detecting a shift position of the select lever based on the electric circuit. Is.

  In an automatic transmission in a vehicle such as an automobile, a terminal block that constitutes an inhibitor switch device is usually fixed to the transmission case in order to detect a shift position of a select lever. Such an inhibitor switch device includes a terminal block fixed to the transmission case of the automatic transmission, a contact plate formed on the terminal block, an operation unit that operates along the contact plate in conjunction with a vehicle select lever, And a movable contact formed on the operation portion and capable of sliding on the contact plate to form a predetermined electric circuit corresponding to the contact position.

  Among these, the operation unit is rotatably attached to the terminal block, and an insertion hole is formed through which a shaft member interlocking with a vehicle select lever can be inserted from one opening side, and the operation unit is responsive to the rotation operation of the shaft member. Therefore, the movable contact is operated in the extending direction of the contact plate. Further, the contact plate and the operation portion are substantially sealed by being covered with a cover member, and are waterproof and dustproof.

  Thus, when the operation unit is operated in accordance with the operation of the shaft member, an electric circuit is formed according to the contact position of the movable contact with the contact plate, and the shift position of the select lever is set based on the electric circuit. It is configured so that it can be detected. Therefore, based on the detection, the power transmission path of the automatic transmission can be controlled in correspondence with the shift position of the select lever. In addition, since this prior art does not relate to the literature known invention, there is no prior art document information to be described.

  However, in the above-described conventional inhibitor switch device, the insertion hole of the operation portion through which the shaft member is inserted can be inserted through the shaft member exclusively from one side (the insertion direction of the shaft member is determined). There was a problem that the mounting surface for the mission case was uniquely determined. In other words, in the past, if the mounting surface of the inhibitor switch device is mounted on the mission case with the mounting surface turned upside down, the shaft member cannot be inserted into the insertion hole of the operation unit. There was a problem that general purpose was lacking.

  The present invention has been made in view of such circumstances, and provides an inhibitor switch device that can be mounted on the transmission case with the mounting surface turned upside down and can be improved in versatility. There is.

  The invention according to claim 1 is fixed to a transmission case of an automatic transmission of a vehicle, a terminal block having a contact plate formed at a predetermined portion, and operably attached to the terminal block. An insertion hole through which a shaft member interlocking with the lever can be inserted is formed, and an operation portion that operates in the extending direction of the contact plate according to the operation of the shaft member, and is formed in the operation portion, on the contact plate A movable contact that can slide to form a predetermined electrical circuit in accordance with the contact position, and is attached to the terminal block while covering the contact plate and the operation unit, and substantially seals the contact plate and the operation unit. In the inhibitor switch device for detecting the shift position of the select lever based on the electrical circuit, the insertion hole of the operation portion is a central portion with respect to the insertion direction of the shaft member. There together is an outer diameter substantially matched the inner diameter of the shaft member, characterized by comprising an opening while the tapered surfaces are formed respectively with respect to the vertical direction from the central portion.

  According to a second aspect of the present invention, in the inhibitor switch device according to the first aspect, on the inner wall surface in the central portion of the insertion hole, a rib that can be pressed and crushed in the process of inserting the shaft member is provided on the inner wall surface of the shaft member. It is characterized by extending in the insertion direction.

  According to a third aspect of the present invention, in the inhibitor switch device according to the second aspect of the present invention, the rib has inclined surfaces at both ends thereof.

  According to a fourth aspect of the present invention, in the inhibitor switch device according to any one of the first to third aspects, an engagement hole engageable with a tip end of a shaft member inserted through the insertion hole is formed at one end. At the time of mounting the terminal block to the transmission case, the positioning member is formed with an insertion hole through which the positioning pin that can be inserted into the positioning hole formed in the terminal block is formed at the other end. The positioning hole has an inner diameter dimension that substantially matches the outer diameter of the positioning pin with respect to the insertion direction of the positioning pin. Each of them is characterized by being opened while forming a tapered surface.

  According to the first aspect of the present invention, the insertion hole of the operation portion has an inner diameter dimension in which the central portion substantially matches the outer diameter of the shaft member with respect to the insertion direction of the shaft member, and the vertical direction extends from the central portion. Since the taper surface is opened while being formed, the mounting surface can be attached to the transmission case with the front and back reversed, and versatility can be improved.

  According to the invention of claim 2, the inner wall surface in the central portion of the insertion hole is provided with a rib that can be pressed and crushed in the process of inserting the shaft member so as to extend in the insertion direction of the shaft member. The shaft member inserted through can be more firmly fixed.

  According to the invention of claim 3, since the rib has inclined surfaces at both ends thereof, even when the shaft member is inserted from any direction into the insertion hole, the rib can be easily and smoothly applied. The shaft member can be inserted.

  According to the invention of claim 4, the positioning hole has an inner diameter dimension in which the central portion substantially coincides with the outer diameter of the positioning pin with respect to the insertion direction of the positioning pin, and from the central portion to the vertical direction. Since each tapered surface is formed and opened, even when the inhibitor switch device is attached to the mission case, even if the attachment surface is attached to the mission case with the front and back reversed. Positioning work can be easily and accurately performed.

The perspective view which shows the inhibitor switch apparatus which concerns on embodiment of this invention Exploded perspective view showing the inhibitor switch device Exploded perspective view showing the inhibitor switch device A plan view, a side view and a back view showing the inhibitor switch device VV line sectional view in FIG. A rear view and a side view showing an operation unit in the inhibitor switch device. The top view which shows the insertion hole formed in the operation part in the inhibitor switch apparatus VIII-VIII line sectional view in FIG. IX-IX sectional view in FIG. Side view and front view showing a shaft member in the inhibitor switch device It is a figure which shows the state which inserted the shaft member in the insertion hole in the inhibitor switch apparatus, Comprising: (a) The state which inserted the shaft member from the opening of one side of the insertion hole, (b) The other of the insertion hole Sectional drawing which shows the state which inserted the shaft member from the opening of the side The top view which shows the hole for positioning formed in the terminal block in the inhibitor switch apparatus XIII-XIII line sectional view in FIG. The top view which shows the positioning member used with the inhibitor switch apparatus Side view and front view showing positioning pins used in the inhibitor switch device It is a figure which shows the state at the time of the positioning operation | work in the inhibitor switch apparatus, Comprising: The cross-sectional schematic diagram which shows the positioning operation in the state which made the shaft member penetrate from the opening of the one side of an insertion hole It is a figure which shows the state at the time of the positioning operation | work in the inhibitor switch apparatus, Comprising: The cross-sectional schematic diagram which shows the positioning operation in the state which made the shaft member penetrate from the opening of the other side of an insertion hole

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The inhibitor switch device according to the present embodiment forms an electrical signal by sliding the movable contact along the contact plate in conjunction with the select lever, and detects the shift position of the select lever based on the electrical circuit. As shown in FIGS. 1 to 10, a terminal block 1 made of a resin molded product, a metal contact plate 2, an operation unit 3 made of a resin molded product, and a metal movable contact 4. And a cover member 5 made of a resin molded product or the like.

  The terminal block 1 is fixed to a transmission case (not shown) of an automatic transmission provided in a vehicle such as an automobile, and a contact plate 2 (see FIG. 2) is formed at a predetermined portion. The contact plate 2 is made of, for example, a conductive metal plate that is punched and bent with a press or the like into a predetermined shape (in this embodiment, an arc shape), and its end (terminal portion) is a terminal. It is set to be located in the connector part 1c of the base 1.

  Accordingly, if an external connector (not shown) formed on an external device or the like (for example, a controller or the like disposed in the mission case) is connected to the terminal portion of the connector portion 1c, the detection signal of the inhibitor switch device is transmitted to the external device. Etc. can be sent to. Therefore, for example, based on the detection signal transmitted to the external device, the power transmission path of the automatic transmission can be controlled.

  In addition, a predetermined portion of the terminal block 1 (a portion corresponding to the rotation shaft portion 3a of the operation portion 3 when the operation portion 3 is assembled) is formed with a hole portion 1a penetrating the front and back. A plurality of insertion holes a through which the screws N can be inserted are formed. Further, a positioning hole 1b penetrating the front and back is formed in another part of the terminal block 1. When the inhibitor switch device is attached to the transmission case, the positioning pin 10 (FIG. 15) is inserted into the positioning hole 1b. Reference) can be inserted and positioned. The details of the positioning operation will be described later.

  The operation unit 3 is attached to the terminal block 1 so as to be operable (in this embodiment, is rotatable), and an insertion hole 3aa is formed through which a shaft member 8 (see FIG. 10) interlocked with a vehicle select lever can be inserted. Then, it operates (rotates) in the extending direction of the contact plate 2 in accordance with the operation of the shaft member 8. More specifically, as illustrated in FIG. 6, the operation unit 3 includes a rotation shaft portion 3 a in which an insertion hole 3 aa is formed, and an arm portion 3 b that extends laterally from the rotation shaft portion 3 a. And is attached to the terminal block 1 so as to be rotatable about the rotation shaft portion 3a.

  As shown in FIGS. 7 to 9, an insertion hole 3 aa extends in the rotation shaft portion 3 a along the direction of the rotation axis, and the shaft member 8 is inserted and attached to the insertion hole 3 aa. It is like that. The shaft member 8 is formed of a shaft-shaped member that is formed into a desired shape by cutting a metal round bar, for example, is connected to the select lever and attached to the vehicle side, and can be rotated in conjunction with the operation of the select lever. As shown in FIG. 10, an insertion portion 8a having a cross section of a cross section, a base end portion 8b having a circular cross section, and a convex portion protruding in the axial direction from the base end portion 8b It is mainly composed of 8ba.

  In addition, a movable contact 4 that can slide on the contact plate 2 to form a predetermined electrical circuit corresponding to the contact position is attached to the arm portion 3b as the operation portion 3 rotates. . As shown in FIGS. 2 and 3, the movable contact 4 is assembled so as to be in contact with one end of the coil spring 7, and is always urged toward the contact plate 2 by the coil spring 7. It is said that. In the figure, reference numeral 6 denotes a steel ball attached to the other end of the coil spring 7, and reference numeral r denotes a sealing member such as an O-ring.

  The cover member 5 is attached to the terminal block 1 so as to cover the contact plate 2 and the operation unit 3, and is for substantially sealing the contact plate 2 and the operation unit 3. The cover member 5 accommodates the operation unit 3 in a rotatable manner. A recess 5a is formed. A hole 5b penetrating the front and back is formed in a predetermined portion (a portion corresponding to the rotation shaft portion 3a of the operation portion 3 when the operation portion 3 is assembled) in the housing recess 5a. A plurality of screw holes b through which the screws N can be screwed are formed. Moreover, the groove | channel 5c is formed along the periphery of the accommodation recessed part 5a, and packing P can be engage | inserted in this groove | channel 5c.

  Thus, by assembling the terminal block 1 and the cover member 5 with the screw N in a state where the rotation shaft portion 3a is fitted in the hole portion 1a and the hole portion 5b via the seal member r, FIG. As shown, the seal between the rotating shaft 3a and the opening edge of the hole 1a and the hole 5b is made by the seal member r, and the housing recess 5a is sealed by the packing P. It has become. Thereby, the inside of the accommodation recessed part 5a can be hold | maintained in a substantially sealed state, and the contact plate 2 and the operation part 3 in the said accommodation recessed part 5a can be substantially sealed. The cover member 5 is formed with a bolt hole 5d through which a bolt (not shown) can be inserted. The bolt inserted into the bolt hole 5d is screwed to the transmission case side, whereby the inhibitor switch device as a whole. Can be fixed.

  Further, by assembling the terminal block 1 and the cover member 5 with screws N in a state in which the rotation shaft portion 3a is fitted in the hole portion 1a and the hole portion 5b, as shown in FIG. The upper and lower surfaces of the portion 3a (that is, the opening on one side and the opening on the other side of the insertion hole 3aa) can be exposed to the outside through the hole 1a and the hole 5b, respectively. Thereby, the shaft member 8 can optionally be inserted through the opening on one side of the insertion hole 3aa or through the opening on the other side.

  Here, in this embodiment, as shown in FIGS. 7 to 9, the insertion hole 3 aa of the operation unit 3 has a central portion A corresponding to the insertion direction of the shaft member 8 (extension direction of the insertion hole 3 aa). The inner diameter is approximately the same as the outer diameter of the shaft member 8, and the center portion A is opened while forming tapered surfaces B1 and B2 in the vertical direction. That is, the inner wall surface of the central portion A has substantially the same shape and substantially the same size as the insertion portion 8a of the shaft member 8 (however, it is slightly smaller to allow insertion), and the opening on one side from there. In addition, the tapered surfaces B1 and B2 are formed while continuously expanding the inner diameter dimension toward the opening on the other side (upper and lower openings in FIG. 8).

  Thus, as shown in FIG. 11, when the shaft member 8 is inserted from the opening (upper opening) on one side in the insertion hole 3aa (see FIG. 11A), the opening on the other side in the insertion hole 3aa. In both cases of insertion from the (lower opening) (see FIG. 5B), the taper surfaces B1 and B2 can facilitate the insertion work, and the central portion A and the insertion portion 8a of the shaft member 8 By matching, the insertion portion 8a of the shaft member 8 can be firmly fitted and fixed at the central portion A. In addition, according to the present embodiment, it is sufficient to increase the dimensional accuracy of only the central portion A of the inner wall surface of the insertion hole 3aa, so that the shaft member 8 can be more reliably inserted and fitted by the central portion A. Can do.

  Further, in the present embodiment, a rib R that can be pressed and crushed in the process of inserting the shaft member 8 is formed on the inner wall surface in the central portion A of the insertion hole 3aa as shown in FIG. It extends in the insertion direction. Thereby, the insertion part 8a of the shaft member 8 can be locked, and the shaft member 8 inserted through the insertion hole 3aa can be more firmly fixed. Although a plurality of ribs R are preferably formed on the inner wall surface of the insertion hole 3aa as in the present embodiment, one rib R may be formed at a desired position.

  In addition, the rib R according to the present embodiment has inclined surfaces Ra at both ends thereof. That is, both ends of the rib R are formed with inclined surfaces Ra so that the protruding height is continuously reduced, and the initial resistance when the rib R is crushed in the process of inserting the shaft member 8 is reduced. It is possible to perform a smooth insertion work. Thereby, even if it is a case where the shaft member 8 is penetrated from any direction with respect to insertion hole 3aa, the said shaft member 8 can be penetrated easily and smoothly.

  According to the above embodiment, the insertion hole 3aa of the operation portion 3 has an inner diameter dimension in which the central portion A substantially matches the outer diameter of the shaft member 8 with respect to the insertion direction of the shaft member 8, and the central portion. Since the taper surfaces B1 and B2 are formed while being formed from A in the vertical direction, respectively, the shaft member 8 is inserted from one side opening (upper opening) in the insertion hole 3aa (FIG. 11A). Reference) and the case where it is inserted through the opening (lower opening) on the other side of the insertion hole 3aa (see (b) in the figure), and can be attached to the transmission case with the mounting surface upside down. Can be made possible, and versatility can be improved.

  That is, according to the present inhibitor switch device, the insertion hole 3aa has an inner diameter dimension in which the central portion A substantially matches the outer diameter of the shaft member 8 with respect to the insertion direction of the shaft member 8, and the central portion A Since the taper surfaces B1 and B2 are formed while being formed in the vertical direction from the top, the back surface F2 (the outer surface of the terminal block 1) of the front surface F1 and the back surface F2 is brought into contact with the transmission case. Since the front and back are reversed, the surface F1 (the outer surface of the cover member 5) can be brought into contact with the transmission case and used as the mounting surface for the transmission case. is there.

  In addition, as shown in FIG. 14, the inhibitor switch device according to the present embodiment has an engagement hole 9a that can be engaged with the tip (insertion portion 8a) of the shaft member 8 inserted through the insertion hole 3aa at one end. In addition, the terminal block is formed by the positioning member 9 having an insertion hole 9b formed in the other end portion through which a positioning pin 10 (see FIG. 15) that can be inserted into the positioning hole 1b formed in the terminal block 1 is inserted. Positioning at the time of attachment to one mission case is performed.

  As shown in FIG. 15, the positioning pin 10 is formed integrally with the insertion hole 10 a (circular in cross section) that can be inserted into the insertion hole 9 b and the positioning hole 1 b, and can be gripped by the operator. The large-diameter portion 10b (having a circular cross section) is mainly configured. The positioning member 9 and the positioning pin 10 are exclusively used as jigs for mounting the inhibitor switch device to the transmission case, and are removed after the mounting operation.

  The engaging hole 9a of the positioning member 9 has a shape and a size that substantially match the insertion portion 8a of the shaft member 8, and when the shaft member 8 is inserted, the angle of the positioning member 9 (from one end to the other end). And the insertion hole 9b has a shape and a dimension that substantially match the insertion portion 10a of the positioning pin 10. Thus, as shown in FIGS. 16 and 17, the positioning pin 10 is inserted into the positioning hole 1b through the insertion hole 9b while the engagement hole 9a of the positioning member 9 is inserted into the insertion portion 8a of the shaft member 8. The entire inhibitor switch device can be set to a set posture (mounting angle) if it is inserted into the transmission case. In this state, if the bolt is inserted into the bolt hole 5d and screwed, it can be fixed to the transmission case. .

  However, in the positioning hole 1b according to the present embodiment, as shown in FIGS. 12 and 13, the central portion C substantially matches the outer diameter of the positioning pin 10 with respect to the insertion direction of the positioning pin 10 (insertion portion 10a). In addition to the inner diameter dimension, the center portion C is opened while forming tapered surfaces D1 and D2 in the vertical direction. That is, the inner wall surface of the central portion C has substantially the same shape and substantially the same size as the insertion portion 10a of the positioning pin 10 (however, it is slightly smaller to allow insertion), and the opening on one side from there. In addition, the tapered surfaces D1 and D2 are formed while the inner diameter dimension is continuously expanded toward the opening on the other side (upper and lower openings in FIG. 13).

  Thus, as shown in FIG. 11, when the shaft member 8 is inserted from the opening (upper opening) on one side in the insertion hole 3aa (see FIG. 11A), the opening on the other side in the insertion hole 3aa. In both cases (see FIG. 16B), the positioning pin 10 is inserted from the opening (lower opening) on the other side of the positioning hole 1d (see FIG. 16A). It can be inserted through the opening (upper opening) on one side (see Fig. 16 (b)), and positioning is possible even when the inhibitor switch device is mounted on the transmission case with the mounting surface upside down. Work can be performed satisfactorily.

  Further, when the positioning pin 10 is inserted, the insertion work can be facilitated by the tapered surfaces D1 and D2, and the center portion C and the insertion portion 10a of the positioning pin 10 are matched so that the entire inhibitor switch device is accurate. A well-set posture (mounting angle) can be obtained. Furthermore, according to the present embodiment, it is only necessary to increase the dimensional accuracy of only the central portion C of the inner wall surface of the positioning hole 1d. Therefore, the positioning accuracy when the positioning pin 10 is inserted through the central portion C is further increased. be able to.

  Thus, according to the present embodiment, the positioning hole 1d has an inner diameter dimension in which the central portion C substantially matches the outer diameter of the insertion portion 10a of the positioning pin 10 with respect to the insertion direction of the positioning pin 10. At the same time, since the taper surfaces D1 and D2 are formed in the vertical direction from the central portion C and open, the mounting surface is turned upside down with respect to the transmission case when the inhibitor switch device is attached to the transmission case. Even if it is attached, the positioning work of the inhibitor switch device can be performed easily and accurately.

  Although the present embodiment has been described above, the present invention is not limited to this, and the case where the inhibitor switch device is mounted on the transmission case is mounted on the transmission case with the mounting surface upside down. However, the inhibitor switch device may be positioned by another form of jig. In addition, the insertion hole of the operation portion has an inner diameter dimension that substantially matches the outer diameter of the shaft member with respect to the insertion direction of the shaft member, and has a tapered surface in the vertical direction from the center portion. As long as it is formed while being formed, it is sufficient that the rib R or the like is not formed.

  In the present embodiment, the operation member 3 is rotated by inserting the shaft member 8 through the insertion hole 3a of the operation unit 3 and rotating the shaft member 8 according to the operation of the select lever. However, for example, a slide member that slides in response to the operation of the select lever is inserted into the insertion hole 3a of the operation portion 3, and the contact plate 2 is formed along the slide direction, so that it corresponds to the shift position of the select lever. An electric circuit may be formed.

  The insertion hole of the operating portion has an inner diameter dimension that substantially matches the outer diameter of the shaft member with respect to the insertion direction of the shaft member, and a tapered surface is formed from the center portion in the vertical direction. However, the inhibitor switch device that is opened while being open can also be applied to devices having different external shapes or those having other functions added.

DESCRIPTION OF SYMBOLS 1 Terminal block 1d Positioning hole 2 Contact plate 3 Operation part 3aa Insertion hole 4 Movable contact 5 Cover member 6 Steel ball 7 Coil spring 8 Shaft member 9 Positioning member 10 Positioning pin F1 Front surface F2 Back surface A, C Center part B1, B2, D1 , D2 taper surface

Claims (4)

A terminal block fixed to a transmission case of a vehicle automatic transmission and having a contact plate formed in a predetermined portion;
An operating portion that is operatively attached to the terminal block and has an insertion hole into which a shaft member that is linked to a vehicle select lever can be inserted, and that operates in the extending direction of the contact plate according to the operation of the shaft member When,
A movable contact that is formed on the operation unit and that can slide on the contact plate to form a predetermined electrical circuit corresponding to the contact position;
A cover member that is attached to the terminal block while covering the contact plate and the operation unit, and substantially seals the contact plate and the operation unit;
In an inhibitor switch device for detecting a shift position of the select lever based on the electrical circuit,
The insertion hole of the operation portion has an inner diameter dimension that substantially matches the outer diameter of the shaft member with respect to the insertion direction of the shaft member, and has a tapered surface in the vertical direction from the center portion. An inhibitor switch device characterized by being formed and opened.   The inhibitor according to claim 1, wherein a rib that can be pressed and crushed in a process of inserting the shaft member extends in an insertion direction of the shaft member on an inner wall surface at a central portion of the insertion hole. Switch device.   The inhibitor switch device according to claim 2, wherein the rib has inclined surfaces at both ends thereof.   An engagement hole that can be engaged with the tip of the shaft member inserted through the insertion hole is formed at one end, and an insertion hole through which a positioning pin that can be inserted into the positioning hole formed in the terminal block can be inserted. Is a positioning member formed at the other end, and performs positioning when the terminal block is attached to the transmission case, and the positioning hole has a central portion with respect to the insertion direction of the positioning pin. The inner diameter of the positioning pin is substantially the same as the outer diameter of the positioning pin, and the opening is formed while forming a tapered surface in the vertical direction from the central portion. The inhibitor switch device described in 1.

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