JP3473035B2 - Vehicle pedal switch - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular pedal switch used as a brake light switch mounted on a pedal portion of an automobile or a cancel switch of an auto drive system. is there. 2. Description of the Related Art A conventional technique will be described with reference to FIGS. According to FIG. 1, reference numeral 6 denotes a terminal which is insert-molded on the connector 3, and a contact 5 is joined to each end thereof to form a first contact. Reference numeral 4 denotes a second contact held by the first coil spring 7 and the plunger 8, which opens and closes a switch by moving toward and away from the first contact 5 by movement of the plunger 8. And plunger 8
Is pressed upward by the second coil spring 9 and is supported by the inner diameter of the set screw 2. [0004] The set screw 2 and the case 1 are caulked at the rim portion 10, and the case 1 is caulked to the connector 3 and connected. A nut 11 for attaching to the brake pedal assembly 20 is mounted on the set screw 2. FIG. 12 shows a vehicle pedal switch 21 which is mounted on the brake pedal assembly 20 and is used as a brake light switch. When the brake pedal 24 is depressed with a foot, the brake pedal 24 rotates in the direction of the arrow with respect to the mounting plate 23. The pressing plate 22 connected to the rotating member rotates in the arrow direction. FIG. 13 shows when the brake pedal 24 is not depressed.
FIG. 13 (b) shows the state of stepping on FIG. 13 (b).
In the state of (a), the first contact 5 and the second contact 4 of FIG. 7 are separated, and in the state of FIG. 13 (b), the plunger 8 moves to the set screw 2 side, and the first contact 5 and the second contact 4 4 comes into contact, and the brake light is turned on. Since the relative position of the brake pedal 24 and the pressing plate 22 with respect to the mounting plate 23 in the brake pedal assembly 20 varies in millimeters,
When the vehicle pedal switch 21 is fixed to the mounting plate 23, the vehicle pedal switch 21 is rotated with respect to a female screw provided on the mounting plate 23 to adjust the axial position according to the variation, and the nut 11 is adjusted. By fixing, the vehicle pedal switch 21 is mounted on the brake pedal assembly 20. [0006] However, in the above-mentioned conventional mounting method of the vehicle pedal switch, the adjustment is troublesome, the reliability of the adjustment is low, and there is a danger of poor adjustment. Was. [0007] In order to solve the above problems, the present invention provides a case having a through hole and at least a case.
1st contact mounted on the case side and one end in the through hole of the case
A plunger through which the part is movably inserted, and the plunger
The first contact is held at the other end of the
A second contact for contacting with and separating from a point, and a second contact at one end of the plunger.
A plurality of opposing teeth provided at a predetermined pitch in the girder inner hole
And an adjustment pin inserted into the inner hole and protruding at one end;
The base is fixed to the adjustment pin, and the claw at the tip from the base
Is composed of a plurality of extended metal plates having spring properties,
The plurality of claws correspond to a plurality of teeth, and the claws
The cattle corresponds to the moving direction of the plunger.
Arranged a predetermined distance smaller than a predetermined pitch of the teeth,
For each of the plurality of opposed teeth, one of the claws
The protrusion of the adjustment pin is set by engaging
When making fine adjustment of the amount of protrusion of the adjustment pin
Of the claws engaged with each corresponding tooth
Another one of the claws different from one of the above is the above
A vehicle pedal switch that engages with each corresponding tooth
Things. [0008] [action] Thus, a plurality of teeth relative relationship of the plunger and the adjustment pin according to the present invention provided on the inner bore of the plunger, is provided in the metal plate mounted on the adjustment pin, each of the plurality of teeth
Position in the direction of plunger movement according to the amount of adjustment.
Can be changed at the position of engagement with a plurality of claws arranged differently.After applying a pressing force greater than the pressing force on the adjusting pin , after mounting the switch at a position suitable for the brake pedal assembly, fine adjustment of the adjusting pin Can be easily adjusted, simplifying the adjustment work at the time of installation, as well as the reliability of adjustment and the adjustment position.
The accuracy of the position adjustment is high, and the occurrence of position adjustment failure is also prevented. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle pedal switch according to an embodiment of the present invention will be described with reference to FIGS. Note that the same parts as in the related art will be described with the same reference numerals. The same portions of the structure and function of the first contact 5 and the second contact 4, and the first coil spring 7, the second coil spring 9, and the plunger 8 have been described in the prior art, so that the description will be omitted and only the differences will be described. Inner hole 8 of plunger 8, which is a molded product of
A set of a plurality of teeth 8b is provided at two locations facing each other, and a claw 13 made of a metal plate having a spring property such as stainless steel is engaged with one of the sets of the teeth 8b. ing. The claw 13 is press-fitted and fixed to the adjustment pin 12. Thereby, the plunger 8 can be driven back and forth by pressing the adjustment pin 12. The pawl 13 has two pawls opposed to the set of the teeth 8b of the plunger 8, and these two pawls 13 are provided at a position shifted in the axial direction of the plunger 8 by a distance h. . This distance h is set to half of the pitch 1 of the teeth formed in the inner hole 8a of the plunger 8, so that the distance h is further reduced by half with respect to the teeth 8b of the plunger 8.
The position accuracy is improved by reducing the adjustment pitch. In this embodiment, 1 is 1 mm, h = 0.5 mm, and the adjustment pitch is 0.5 mm. As described above, the variation of the brake pedal assembly 20 is on the order of millimeters, so that 0.5 mm is considered to be sufficient as the adjustment pitch. The adjustment pin 12 is required to move relative to the plunger 8 only at a certain load. That is, it is set higher than the maximum value of the sum of the first coil spring 7 and the second coil spring 9. In this embodiment, the maximum value of the sum of the coil springs is 1 kg, and the designated load range is set to 3 kg to 5 kg in consideration of a margin. In this embodiment, two teeth 8 of the plunger 8 are provided.
For b, the adjustment pitch is set to 0.5 mm by two claws 32 and 33, respectively, but two more are added to constitute four claws, and the difference in the axial position between adjacent claws is 0.25 mm.
In this case, the adjustment pitch can be easily reduced to 0.25 mm, and the accuracy can be improved. Note that the adjustment pin 12 is slightly protruded from the normal setting, and is also attached to the brake pedal assembly shown in FIG.
To adjust the position of the adjusting pin by applying the above load (3 kg to 5 kg) in the direction to turn off the engaging pin 13 and the engagement of the tooth 8 b of the plunger 8 with the other tooth 8 b. It is. Further, since the vehicular pedal switch 21 is always turned on and off, abrasion powder is generated due to a relative slight displacement between the tooth 8b and the claw 13, and the abrasion powder is generated in the inner hole 8a of the plunger 8. The first contact 5 and the second contact 4 are not touched, so that the problem of poor contact of the contact due to abrasion powder does not occur. The mounting of the brake pedal assembly 20 to the mounting plate 23 may be performed with the screw 2 of the case 1 and the female screw of the mounting plate 23 as in the conventional case. The present invention can provide a vehicle pedal switch that can be mounted on a brake pedal assembly of a vehicle or the like and that can be adjusted to an appropriate switching position extremely easily by simplifying the mounting on the plate 23. That is, according to the figure, the flange portion 1 is point-symmetrically formed on the small diameter portion cylinder of the resin molded product case 1 having a stepped cylindrical shape.
5 and 15a are provided, a wave washer 14 is arranged on the flange surface of the stepped portion with the large-diameter portion cylinder, and the mounting plate 23 is fitted with the small-diameter portion, the brim portions 15 and 15a, and the projection 17 on the small-diameter portion. Hole 1
8 are provided. A small diameter portion of the switch is inserted into the hole 18, and the wave washer 14 is pressed against the mounting plate 23.
The vehicle pedal switch 21 is rotated by 45 °. At this time, the vehicle pedal switch 21 is mounted on the mounting plate 23 as shown in FIG. That is, the vehicle pedal switch 21 is provided between the flange portions 15 and 15a and the large diameter portion.
3 is inserted and the wave washer 14 is deformed to fix the vehicle pedal switch 21 to the mounting plate 23 so as not to move in the axial direction. Further, the top portion 16a of the rotation stopping portion 16 provided at the large diameter portion is fitted into the side hole 19a of the hole 18 of the mounting plate 23,
The left side rotation of the vehicular pedal switch 21 is prevented by the side surface 16b and the thickness surface of the mounting plate 23, and the right side rotation is prevented by the projection 17 and the side hole 19b provided below the flange 15 on the small diameter portion. . That is, the vehicle pedal switch 21
Is fixed by the wave washer 14 in the axial direction of the case 1.
The rotation direction is fixed by the projection 17 and the rotation stopper 16 of the case 1 with high reliability.
This can be performed very simply by rotation alone. FIGS. 6 (a) to 7 (b) show another embodiment of the vehicle pedal switch of the present invention. The same parts as those of the embodiment of FIG. 6 (a) and 6 (b), reference numeral 12a denotes a stopper projection provided integrally with the adjustment pin 12, and reference numeral 12b denotes a plunger 8 also provided integrally with the adjustment pin 12. These are convex portions provided to be located in the inner hole 8a for preventing the falling off. With the above configuration, it is possible to prevent the adjustment pin 12 from being pushed or removed due to careless handling before mounting on the pedal assembly. After the vehicle pedal switch is mounted on the pedal assembly, the stopper protrusion 12a is connected to the adjustment pin 12. It is used by being pushed to break the end of the plunger 8. FIGS. 7A and 7B show another embodiment of the stopper projection 12 of the embodiment shown in FIGS. 6A and 6B.
In FIG. 6, a window hole 12 c is provided in the adjustment pin 12 in place of a,
6A and 6B, the same function as the stopper protrusion 12a of the embodiment shown in FIG. 6B is achieved. After the stopper pin 12d is attached to the pedal assembly, the stop pin 12d is pulled out of the window hole 12c and the adjustment pin 12 is removed. The length is adjusted in the same manner as in the embodiment of FIG. FIGS. 8 (a) to 9 show another embodiment of the present invention. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. Is a square hole of the plunger 8 having an inner hole formed by:
13a is an inward projection 13d, an outward tongue 13
c, a cylindrical leaf spring provided with a plurality of inwardly extending tongue pieces 13b at the lower end. After the leaf spring 13a is pressed from above the adjusting pin 12 with the tongue piece 13b and the groove 12e aligned and pressed against the projection 13d, the tongue piece 13c is further engaged with the square hole 8b. The leaf spring 13a into which the adjustment pin 12 is press-fitted is inserted into the plunger 8 and locked.
The position can be adjusted steplessly by the projection 13d. Since the tongue piece 13b is aligned with the groove 12e, the tongue piece 13b can be brought into contact with the end of the groove 12e to prevent the adjustment pin 12 from slipping out when it is pulled. FIG. 10 also shows another embodiment of the present invention. Only the differences from the embodiment shown in FIGS. 8A to 9 will be described. Reference numeral 12f denotes a projection provided at the lower end of the adjustment pin 12. After the leaf spring 13a is incorporated into the adjustment pin 12 from above, the protrusion 1 is inserted into the groove 8c of the inner hole of the plunger 8.
2f, and the tongue piece 13c of the leaf spring 13a is engaged with the square hole 8b of the plunger 8 to lock the leaf spring 13a with the plunger 8.
With d, the position of the adjustment pin 12 can be adjusted steplessly. The projection 12f of the adjustment pin 12 comes into contact with the lower end 13e of the leaf spring 13a to prevent the adjustment pin 12 from slipping out when pulled. According to the present invention, as is apparent from the above embodiment , the adjustment of the opposing teeth provided in the inner hole of the plunger is performed.
Adjusted in the direction of plunger movement for each tooth
Of multiple metal springs with their positions shifted according to
One of them is engaged and the amount of adjustment pin protrusion is set
Since it is configured to be, it can very easily finely adjust the amount of projection of the adjusting pin by changing the engagement relationship, and tone
Alignment reliability and adjustment position accuracy are high,
Life can also be prevented .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (a) Front view of one embodiment of a vehicle pedal switch according to the present invention (b) Cross-sectional view of the same FIG. 2 (adjustment pin, claw and plunger as essential parts) FIG. 3 is an enlarged cross-sectional view of FIG. 2; FIG. 4 is a perspective view illustrating mounting on the mounting plate; FIG. 5 is a side cross-sectional view of FIG. 4; FIG. FIG. 7 (a) is a front view of another embodiment of the present invention, and FIG. 7 (b) is a side cross-sectional view of an adjusting pin and a plunger portion which are the main parts. FIG. 8 (a) is a front view of another embodiment, and FIG. 8 (b) is a cross-sectional view of the same side. FIG. 9 shows the relationship between the adjustment pins, leaf springs and plungers which are the main parts. FIG. 10 is an exploded perspective view showing the relationship between an adjustment pin, a leaf spring, and a plunger, which are main parts of another embodiment. FIG. 12 is a side view illustrating the mounting state of the pedal switch to the brake pedal assembly. FIG. 13 (a) to FIG. 13 (b) are side views illustrating the same operation. 2 contacts 5 1st contact 8 Plunger 8a Inner hole 8b Teeth 12 Adjusting pin 12a Stopper protrusion 12b Convex portion 12c Window hole 12d Stop pin 12e Groove portion 12f Projection 13 Claw 13a Leaf spring 13b Tongue piece 13d Convex portion

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-102121 (JP, A) JP-A-5-69838 (JP, U) JP-A-5-79840 (JP, U) JP-A-5-98840 69431 (JP, U) JP 51-21503 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 3/00-7/16 H01H 13/00-13/76 H01H 19/00-21/88 F16B 7/00-7/22

Claims (1)

(57) [Claims 1] A case provided with a through hole, a first contact point mounted on at least the case side, and one through-hole in the case.
A plunger having a movable end and a plunger
Is held at the other end of the plunger.
A second contact contacting with and separating from the contact, and one end of the plunger
A plurality of opposed holes provided at a predetermined pitch in the provided inner hole
Teeth, an adjusting pin inserted into the inner hole and having one end protruding;
The base is fixed to the adjustment pin, and the tip
It consists of a spring-loaded metal plate with a plurality of
The plurality of claws correspond to a plurality of teeth, and
The two correspond to the plunger movement direction
Are shifted by a specified distance smaller than the specified pitch of the teeth
Between each of the plurality of opposing teeth,
The protrusion of the adjustment pin is
It can be set and fine adjustment of the amount of protrusion of the adjustment pin
Are the above-mentioned claws engaged with each corresponding tooth
Another one of the above claws different from one of the
A vehicle pedal switch that engages with each of the corresponding teeth .