JP2561508Y2 - Mounting structure of position detection switch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a position detecting switch for detecting a shift position of a shift lever of, for example, an automatic transmission of an automobile, and more particularly, to a mounting structure of a position detecting switch for improving assemblability. About.

[0002]

2. Description of the Related Art A vehicle equipped with an automatic transmission (hereinafter referred to as AT)
Erroneous operation prevention technology is employed in such vehicles. A shift lock mechanism is known as one of the techniques.
The shift lock mechanism cannot shift from the P (parking) position unless the brake pedal is depressed at the time of starting, thereby preventing the brake pedal from being depressed by the accelerator pedal. The shift lock mechanism is provided with an electromagnetic actuator operated by an electric signal, and the shift lock is released in a state where a solenoid of the electromagnetic actuator is excited. As related prior art, Japanese Utility Model Laid-Open Publication No.
A gazette is known.

The shift lock mechanism includes a shift lever P
A position detection switch for detecting a (parking) position is provided. The position detection switch has a position detection lever movable by an external force, and the position detection lever is connected to a plate that works with the shift lever. In the shift lock mechanism, when the parking position of the shift lever is confirmed by the position detection switch, the vehicle can be started.

FIGS. 8 to 11 show a mounting structure of a position detection switch in a conventional AT vehicle. 8 to 11, reference numeral 1 denotes a base of the shift lever device. Two bosses 2 are formed on the side surface of the base 1 so as to be higher than other portions. Each boss 2 has a female screw 3 and a positioning hole 4 formed therein. In the vicinity of each boss 2 of the base 1, a plate 5 that is linked to the movement of a shift lever (not shown) is arranged.

[0005] A position detection switch 6 is fixed to each boss 2 of the base 1. The position detection switch 6 has a position detection lever 7 that can be moved by an external force. The position detection switch 6 has two pin portions 8 protruding toward the base 1. The position detection switch 6 has two mounting holes 9 formed therein. Each pin 8 of the position detection switch 6 is fitted in the positioning hole 4 of each boss 2 of the base 1. A small screw 10 is inserted into the mounting hole 9 of the position detection switch 6, and the small screw 10 is screwed to the female screw 3 of each boss 2 of the base 1.

The position detecting lever 7 of the position detecting switch 6
Are engaged with the grooves 11 of the plate 5. The position detection lever 7 moves up and down with the movement of the plate 5. The shift lever (not shown)
When the vehicle is at the (parking) position, the position detection switch 6 is turned on by the movement of the plate 5, and the vehicle can be started.

[0007]

However, the mounting structure of the position detecting switch shown in FIGS.
The following problems exist. When the position detection switch 6 is attached to the base 1, the position detection lever 7 of the position detection switch 6 is engaged with the groove 11 of the plate 5, and the pin 8 of the position detection switch 6 is held while maintaining this engaged state. It is necessary to fit into the positioning hole 4 of the boss 2 of the base 1. Therefore, there is a problem that the assemblability of the position detection switch 6 is poor. Since one position detection switch 6 is fixed to the base 1 using two small screws 10, the time required for assembly is increased, the number of parts is increased, and the cost of the shift lever device is increased. There is.

According to the present invention, the number of parts to be assembled can be reduced.
It is another object of the present invention to provide an assembling structure of a position detection switch capable of improving the assemblability of the position detection switch to a base.

[0009]

In order to achieve this object, a mounting structure of a position detecting switch according to the present invention is provided on a position detecting switch having a position detecting lever movable by an external force and on the position detecting switch. A leg having an engaging portion at the tip, a base disposed to face the position detection switch, and movable with respect to the base,
A plate having an engagement groove engageable with a position detection lever of the position detection switch, and formed on the base;
An insertion hole through which the leg can be inserted, and a member engaged with the engagement portion of the leg by moving the position detection switch along the surface of the base with the leg inserted into the insertion hole. A holding hole having a mating hole, and a position detection lever of the position detection switch formed in the plate when the leg of the position detection switch faces the engagement hole of the holding hole. In a state where the guiding portion and the engaging portion of the leg are engaged with the engaging hole of the holding hole of the base, the movement of the position detection switch in the direction opposite to the moving direction to the engaging hole is prevented. And fixing means.

[0010]

In the mounting structure of the position detecting switch configured as described above, the leg of the position detecting switch is inserted into the insertion hole of the holding hole formed in the base. Next,
By moving the position detection switch along the surface of the base with the leg inserted into the insertion hole, the engaging portion of the leg is engaged with the engaging hole of the holding hole. Since the plate has a guide for guiding the position detection lever of the position detection switch to the engagement groove, the work of engaging the engagement portion of the leg portion with the engagement hole of the holding hole is performed simultaneously with the operation of the position detection lever. Can be engaged with the engagement groove of the plate.

In a state where the engaging portion of the leg is engaged with the engaging hole of the holding hole of the base, the movement of the position detecting switch in the direction opposite to the direction of movement of the position detecting switch to the engaging hole is prevented by the fixing means. The position detection switch is securely attached to the base.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the mounting structure of the position detecting switch according to the present invention will be described below with reference to the drawings.

FIG. 1 to FIG. 6 show a first embodiment of the present invention.
In particular, a case where the present invention is applied to a shift lock mechanism in a shift lever device of an automatic transmission of an automobile is shown. In FIG. 1, reference numeral 30 denotes a position detection switch. The position detection switch 30 has a position detection lever 32 that can be moved by an external force. For example, when the position detection lever 32 is at a predetermined position,
N. Position detection switch 30
Outer shell 31 is made of synthetic resin.

A pair of legs 33 is formed on the outer surface of the outer shell 31 of the position detection switch 30. The legs 33 are
It is integrally formed with the outer shell 31 of the position detection switch 30. The distal end of each leg 33 is formed in an engaging portion 34 formed in an L-shape and an inverted L-shape. The engaging portion 34, the stepped portion 34a, has a 34b, the distance S ₁ between one stepped portion 34a and the other stepped portion 34b is slightly larger than the thickness T ₁ of the base 41 to be described later It is big. Thickness between the stepped portion 34a and the step portion 34b of the engaging portion 34 has a T _2.

A stopper 35 is provided on one end surface of the outer shell 31 of the position detection switch 30. Stopper 35
Is integrally formed with the outer shell 31. Stopper 35
Has an upper surface portion formed in a plate shape and a lower surface portion formed in a U-shape. At the top surface of the stopper 35, a mounting hole 61 described later is formed.

The base 40 is arranged to face the position detection switch 30. The base 40 is a member that swingably supports a shift lever (not shown). Base 40
Is composed of a synthetic resin. The base 40 has a flange portion 41 protruding toward the position detection switch 30. The flange portion 41 is formed in a columnar shape, and a female screw 63 is formed at the center.

In the vicinity of the flange portion 41 of the base 40,
A pair of holding holes 45 are formed. Each holding hole 45
It penetrates the front and back surfaces of the base 40. Holding hole 45
Is composed of an insertion hole 46 and an engagement hole 47. Width W ₁ of the insertion hole 46 has a larger relative to the width W ₂ of the engagement hole 47. The insertion hole 46 is a part where the leg 33 of the position detection switch 30 is inserted, and the engagement hole 47 is a part where the engagement part 34 of the leg 33 is engaged.
The width W ₂ of the engaging hole portion 47 is set to be slightly larger than the thickness T ₂ of the legs 33.

By moving the position detection switch 30 along the surface of the base 40 toward the engagement hole 47 (X direction) with the leg 33 of the position detection switch 30 inserted into the insertion hole 46, The engaging portion 34 of the leg 33 is the engaging hole 4
7. Engagement part 34 of leg 33
Cannot be pulled out in the direction of the arrow Z in the state where is engaged with the engagement hole 47. In the state where the position detection switch 30 is moved to the engagement hole 47 side, before the leg 33 contacts the end face of the engagement hole 47,
The position detection switch 30 is positioned by the contact between the stopper 35 and the flange 41 of the base 40.

In the vicinity of each holding hole 45 of the base 40, there is disposed a plate 50 which is linked with the movement of a shift lever (not shown). The plate 50 has an engagement groove 51 that can be engaged with the position detection lever 32 of the position detection switch 30. A guide portion 52 is formed at a position adjacent to the engagement groove 51 of the plate 50. Guide part 52
Has one width H ₁ is the same as the width of the engaging groove 51, the width of the other H ₂ is set to be significantly larger than one of the width H _1. The guide part 52 is a leg part 33 of the position detection switch 30.
Has a function of guiding the position detection lever 32 of the position detection switch 30 to the engagement groove 51 when the head faces the engagement hole 47 of the holding hole 45.

The position detecting switch 30 mounted on the base 40 is prevented from moving in the direction opposite to the moving direction to the engaging hole 46 by the fixing means 60. Fixing means 60
Is composed of a mounting hole 61, a small screw 62, and a female screw 63. The mounting hole 61 is formed in the stopper 35 of the position detection switch 30. The machine screw 62 is
It is screwed into a female screw 63 formed on the flange 41 of the No. 0. When the position detection switch 30 is fixed to the base 40 side by the engagement of the leg 33 and the small screw 62, the engagement groove 51 of the plate 50 and the position detection switch 30
The position detection lever 32 is engaged, and the position detection lever 32 moves in conjunction with the movement of the plate 50.

Next, the operation of the first embodiment will be described. FIG. 1 shows the position detection switch 30
2 shows a state before fixing to. In this state, the plate 50 interlocking with a shift lever (not shown) is assembled at a predetermined position. When the position detection switch 30 is assembled to the base 40 by the operator, _first , as shown by an arrow F1 in FIG. Is inserted into. Here, a stepped portion 34 is formed on the engagement portion 34 of the leg 33.
Since a is formed, the insertion operation by the operator is performed until the step portion 34a comes into contact with the surface of the base 40.

[0022] inserting operation by the contact between the step portion 34a and the base 40 of the surface is completed, as shown by the arrow F ₂ in FIG. 6, the position detection switch 30 is engaged in the retaining hole 45 along the surface of the base 40 It is pushed into the mating hole 47.
When the position detection switch 30 is pushed toward the engagement hole 47 by a predetermined amount, the flange portion 41 of the base 40 and the stopper 35 of the position detection switch 30 abut, and the position detection switch 30 is positioned at a predetermined position. You.

Here, since the guide portion 52 is formed on the plate 50, the leg portion 33 of the position detection switch 30 is formed.
When the head faces the engagement hole 47 of the holding hole 45, the position detection lever 32 is guided by the guide part 52, and is reliably guided to the engagement groove 51. When the position detecting switch 30 by the stopper 35 is positioned, as shown by the arrow F ₃ in FIG. 6, the small screws 62 are inserted into the mounting hole 61 of the stopper 35, the small screws 62 are internally threaded flange 41 of the base 40 Screw into 63. As a result, the position detection switch 30 is assembled to the base 40 without play.

In this embodiment, the position detection switch 30
The position detection switch 30 is positioned in the X direction by the contact between the stopper 35 and the flange portion 41 of the base 40, but the leg 33 is brought into contact with the end face 47a of the engaging hole 47 of the holding hole 45. Alternatively, the position detection switch 30 may be positioned in the X direction.

Second Embodiment FIG. 7 shows a second embodiment of the present invention. The second embodiment differs from the first embodiment only in the fixing means.
The other parts are the same as in the first embodiment. Therefore, the same parts as those in the first embodiment are denoted by the same reference numerals, and the description of the corresponding parts will be omitted, and only different parts will be described.

FIG. 7 shows the position detection switch 30. A stopper 71 is formed at one end of the outer shell 31 of the position detection switch 30. The stopper 71 is
It is formed integrally with the outer shell 31 of the position detection switch 30. The stopper 71 has a regulating end surface 72 for regulating movement in the X direction and a regulating end surface 73 for regulating movement in the Z direction. A positioning hole 43 into which a part of the stopper 71 can be inserted is formed in the base 40.

The stopper 71 can be inserted into the positioning hole 43. When the position detection switch 30 is moved toward the engaging hole of the holding hole (not shown) with the stopper 71 inserted into the positioning hole 43, the stopper 71 Regulation end face 72
Abuts on the end face 43a of the base 40, and the position detection switch 30 is positioned at a predetermined position in the X direction. When the position detection switch 30 is positioned in the X direction, the regulating end surface 73 of the stopper 71 contacts the back surface of the base 40, and the movement of the position detection switch 30 in the Z direction is prevented.

The position detecting switch 30 is prevented from moving in the direction opposite to the moving direction to the engaging hole by the fixing means 80. The fixing means 80 includes a square hole 81, an elastic piece 82, and a projection 83. The square hole 81 is
Is formed on the upper surface portion. The elastic piece 82 is
Are formed using the positioning holes 43 formed in the holes. The projection 83 is formed on the upper surface of the elastic piece 82.
The projection 83 can be fitted into a square hole 81 formed in the stopper 71.

In the second embodiment configured as described above, with the stopper 71 inserted into the positioning hole 43,
When the position detection switch 30 is moved toward the engagement hole (not shown) of the holding hole, the elastic piece 82 is once elastically deformed downward by sliding contact between the lower surface of the stopper 71 and the projection 83.
When the position detection switch 30 is further moved toward the engagement hole, the projection 83 enters the square hole 81 when the positions of the square hole 81 and the projection 83 match.

In this state, the projection 83 and the square hole 81
And the movement of the position detection switch 30 in the X direction is prevented. Therefore, the position detection switch 30 is
It cannot move in any of the X, Y, and Z directions, and the position detection switch 30 is securely attached to the base 40.
As described above, in the second embodiment, the small screws as in the first embodiment become unnecessary, so that the assembling work time can be further shortened and the number of parts can be reduced.

[0031]

According to the present invention, the following effects can be obtained. (1) The position detection switch is provided with a leg having an engagement portion,
Since the guide portion is formed on a plate having an engagement groove with which the position detection lever of the position detection switch can be engaged, the position detection switch can be moved in a state where the leg portion is inserted into the insertion hole of the holding hole of the base. By moving along the surface of the base, the engaging portion of the leg can be engaged with the engaging hole of the holding hole, and the position detecting lever can be guided to the engaging groove of the plate. Therefore, the assembling work for removing the position shift of the position detection switch by the fixing means is significantly easier than in the related art, and the assemblability of the position detection switch can be improved. (2) Since the fixing means is for preventing the position detection switch from being displaced after being assembled, it is not necessary to use a plurality of fixing means as in the conventional case, and the number of parts to be assembled is reduced as compared with the conventional structure. be able to.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a mounting structure of a position detection switch according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a mounting state of the position detection switch of FIG. 1;

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a sectional view taken along line BB of FIG. 2;

FIG. 5 is a partially enlarged sectional view of FIG. 4;

FIG. 6 is a plan view showing a process of attaching the position detection switch of FIG. 1 to a base.

FIG. 7 is an exploded perspective view of the mounting structure of the position detection switch according to the second embodiment of the present invention.

FIG. 8 is an exploded perspective view of a conventional structure for mounting a position detection switch.

FIG. 9 is a plan view showing a mounting state of the position detection switch of FIG. 8;

FIG. 10 is a sectional view taken along the line CC of FIG. 9;

FIG. 11 is a sectional view taken along the line DD of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 30 Position detection switch 32 Position detection lever 33 Leg 34 Engagement part 40 Base 45 Holding hole 46 Insertion hole 47 Engagement hole 50 Plate 51 Engagement groove 52 Guide part 60 Fixing means 80 Fixing means

Claims (1)

(57) [Scope of request for utility model registration] 1. A position detection switch having a position detection lever movable by an external force, a leg provided on the position detection switch and having an engaging portion at a tip, and arranged to face the position detection switch. A base, a plate having an engagement groove movable with respect to the base and engageable with a position detection lever of the position detection switch; an insertion hole formed in the base and through which the leg can be inserted; A holding hole having an engaging hole that engages with the engaging portion of the leg by moving the position detection switch along the surface of the base with the leg inserted into the insertion hole; A guide portion formed on the plate, for guiding the position detection lever of the position detection switch to the engagement groove of the plate when the leg of the position detection switch faces the engagement hole of the holding hole; The joint Fixing means for preventing movement of the position detection switch in the direction opposite to the direction of movement of the position detection switch to the engagement hole when engaged with the engagement hole of the holding hole of the switch. Mounting structure of the detection switch.