JP2552314Y2 - Dima passing 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 dimmer switch for switching the main and sub headlights of a vehicle and a dimmer passing switch having a function of a passing switch for issuing an overtaking light signal.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS. FIG. 7 is an exploded perspective view of the dimmer passing switch, and FIGS. 8 to 10 are side sectional views for explaining the operation of the dimmer passing switch.

Reference numeral 1 denotes a push rod which is operated in three stages up and down. The push rod is mounted directly below a steering wheel of a vehicle and is operated by a lever (not shown) for operating a dimmer passing switch of a combination switch (not shown). It operates in three steps up and down guided by the main body. Reference numeral 2 denotes a first leaf spring contact piece, 3 denotes a second leaf spring contact piece, and 4 denotes a third leaf spring contact piece. Each of the free end sides has a contact portion, and the other end has a fixed interval. It is fixed to the fixing plate 5. 6 is a first fixed contact, 7 is a second fixed contact, the first fixed contact 6 is below the third leaf spring contact 4, and the second fixed contact 7 is the second leaf spring. A contact portion is arranged below the contact piece 3. Reference numerals 8 and 9 denote guides for fixing the first to third leaf spring contact pieces 2, 3, and 4, respectively.
Reference numeral 10 denotes a fixing rivet. Although not shown, they are all configured in a combination switch.

Next, the operation of the above conventional example will be described.
FIG. 8 is a side sectional view when the push rod 1 is at the first stage position by the operation of the lever of the combination switch, and the first leaf spring contact piece 2 is moved upward by the flange upper surface 11 of the push rod 1. While being pulled up, the tip of the second leaf spring contact piece 3 is restrained from moving upward by the stopper 12 of the fixed plate 5, and the first leaf spring contact piece 2 and the second leaf spring contact piece 3 are brought into a state where they do not come into contact with each other. Due to the spring pressure of the third leaf spring contact piece 4, the second leaf spring contact piece 3 and the third leaf spring contact piece 4 are in contact with each other.

Next, FIG. 9 is a side sectional view when the push rod 1 is at the second step position, and the first leaf spring contact piece 2 pushed up on the upper surface 11 of the flange portion of the push rod 1 becomes free. The first leaf spring contact piece 4 is pushed down by the distal end portion 13 of the push rod 1 due to the spring pressure, and is brought into a state in which the third leaf spring contact piece 4 is not in contact with the second leaf spring contact piece 3. The leaf spring contact piece 2 and the second leaf spring contact piece 3 are in contact with each other.

FIG. 10 shows that the push rod 1
FIG. 4 is a side sectional view when the lever is at a stepped position, in which a third leaf spring contact piece 4 is further pushed down by a distal end portion 13 of the push rod 1, comes into contact with a first fixed contact piece 6, and 3
Is pushed down by the flange lower surface 14 of the push rod 1 and comes into contact with the second fixed contact piece 7. The L-shaped end 16 of the first leaf spring contact piece 2 abuts against the stopper 15 of the fixed plate 5, the downward movement is stopped, and the contact with the second leaf spring contact piece 3 is separated. Thus, at the third step position, the second leaf spring contact piece 3 and the second fixed contact piece 7 are in contact with each other, and the third leaf spring contact piece 4 and the first fixed contact piece 6 are in contact with each other. Further, in the above conventional example, the second leaf spring contact piece 3 and the first fixed contact piece 6 are directly connected on the fixed plate 5 and are always in a conductive state.

In the above dimmer passing switch, the second leaf spring contact 3 and the first fixed contact 6 are connected to the ground line ED, and the first leaf spring contact 2 is supplied to the low (LO) beam signal H.
L, the third leaf spring contact piece 4 is set to a high (HI) beam signal HU,
Since the second fixed contact piece 7 is used for the passing signal HF, the ED-H
Passing (HI beam) due to contact between U, HI beam state, contact between ED-HL at the second stage position, LO beam state, contact between ED-HU-HF at the third stage position State.

[0008]

However, since the conventional dimmer passing switch uses three leaf spring contact pieces, the thickness cannot be reduced, and the assembling is complicated and the number of assembling steps is increased. There were many things.

In particular, with regard to the thickness, in recent years, many functions have been provided around the handle, and it has been strongly desired that the combination switch be made thinner.

[0010] In addition, since the push rod and the switch section are not integrated because of the structure, the dimmer passing switch cannot be evaluated unless the whole combination switch is assembled.

An object of the present invention is to provide an excellent dimmer passing switch which is formed as a unit which is thin and integrated with a push rod.

[0012]

In order to solve the above-mentioned problems, the dimmer passing switch of the present invention has one end having a fixed portion and a connection terminal portion (ED) for connecting to an external circuit, and two free ends on the free end side. A first leaf spring contact piece having a contact portion, a second leaf spring contact piece having one end having a connection terminal portion (HL) between the fixed portion and the external circuit, and having one contact portion on a free end side; The first,
A push rod for driving a second leaf spring contact piece, first and second fixed contact pieces each having a contact surface and a connection terminal portion (HU) respectively contacting and separating from the contact portion by the push rod;
Similarly, it is constituted by a third fixed contact piece having a contact surface and a connection terminal portion (HF).

[0013]

According to the above construction, the first leaf spring contact piece is provided with two contact portions, and the second leaf spring contact piece is provided with one contact portion. With this configuration, the thickness can be reduced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the dimmer passing switch of the present invention will be described with reference to FIGS.

According to FIG. 1, reference numeral 17 denotes a housing of the dimmer passing switch. Reference numeral 18 denotes a housing having a fixed portion with the housing 17 at one end, and a connection terminal 18A for connection with an external circuit is inserted into the end of the housing 17. A first leaf spring contact piece provided with two contact portions 19 and 20 at a free end tip, and 21 has a connection terminal portion 21A with an external circuit inserted into one end of the housing 17 at one end to form a fixed portion. One contact portion 23 is fixed to the free end side of the first leaf spring contact piece 18 by a rivet 24 via a fixing guide 22 above the fixed portion of the first leaf spring contact piece 18.
This is a second leaf spring contact piece provided with. The rivet 24 connects the first leaf spring contact piece 18 and the second leaf spring contact piece 21 to the housing 1.
7 to be fixed. Reference numeral 25 denotes a first fixed contact piece, and the contact surface 2 is provided above one contact portion 20 of the first leaf spring contact piece 18.
Reference numeral 27 denotes a second fixed contact so that 6 corresponds, and 29 denotes a third fixed contact so that the contact surface 28 corresponds below one contact portion 20 of the first leaf spring contact 18. The connection terminals 18A, 19 with the respective external circuits in the housing 17 so as to maintain a predetermined positional relationship so that the other contact portion 19 of the first leaf spring contact piece 18 and the contact surface 30 correspond.
A, 25A, 27A, and 29A are projected outside.
A cylindrical projection 31 is formed substantially at the center of the housing 17, and the projection 31 is inserted into a hole of the operation push rod 33 via a return spring 32. The lower surface 34 of the flange of the push rod 33 corresponds to the substantially central hole 35 of the first leaf spring contact piece 18, and the upper surface 36 of the flange
Corresponds to the substantially central hole 37 of the second leaf spring contact piece 21. Reference numeral 38 denotes a cover that covers the housing 17,
A substantially central hole 39 corresponds to the push rod 33 and serves as a guide when the push rod 33 operates.
The claw portion 40 provided on the outer periphery of the cover 38 corresponds to the outer peripheral convex portion 41 of the housing 17, and the cover 38 is fitted into and fixed to the housing 17.

The dimmer passing switch configured as described above is attached to the main body 42 of the combination switch disposed immediately below the handle as shown in FIG. Reference numeral 43 denotes a lever which is operated up and down around a lever fulcrum 44.
The ball 46, the spring 47 and the moderating plate 4 incorporated in 3
5 is performed step by step. This lever 4
By the three-step operation, the push rod 33 can also be set in three-step positions up and down.

Next, the operation of the above embodiment will be described. FIG. 2 shows the first-stage position of the uppermost stage of the push rod 33, and the second leaf spring contact piece 21 is located above the upper surface 36 of the flange of the push rod 33. And is separated from the first leaf spring contact piece 18.

The contact portion 20 of the first leaf spring contact piece 18 is in contact with the contact surface 26 of the first fixed contact piece 25 by spring pressure. Therefore, at the first step position of the push rod 33, the contact between the first leaf spring contact piece 18 and the first fixed contact piece 25 is obtained.

FIG. 3 shows the second stage position of the push rod 33. The first leaf spring contact piece 18 is pushed down by a predetermined amount on the lower surface 34 of the flange portion of the push rod 33, and the first leaf spring contact piece 1
8 is a contact surface 26 of the first fixed contact piece 25.
Pulled away from. Also, the second leaf spring contact piece 21 is released from the flange upper surface 36 of the push rod 33, and the contact portion 23 comes into contact with the other contact portion 19 of the first leaf spring contact piece 18 by spring pressure. Therefore, at the second step position of the push rod 33, the contact between the first leaf spring contact piece 18 and the second leaf spring contact piece 21 is obtained.

FIG. 4 shows the third lowermost position of the push rod 33. The first leaf spring contact piece 18 is further pushed down by the lower surface 34 of the flange of the push rod 33.
One contact portion 20 has a contact surface 28 of the second fixed contact piece 27,
The other contact portion 19 comes into contact with the contact surface 30 of the third fixed contact piece 29. In the middle of the downward movement, the second leaf spring contact piece 21 comes into contact with the stopper wall 42 provided in the housing 17 and the downward movement is stopped. The portion 23 and the other contact portion 19 of the first leaf spring contact piece 18 are separated. Therefore, the push rod 3
In the third third position, contact between the first leaf spring contact piece 18 and the second fixed contact piece 27 and the third fixed contact piece 29 is obtained.

The first fixed contact piece 25 and the second fixed contact piece 27
Are connected in the housing or outside the housing and are always in a conductive state. Therefore, even if they are formed as an integral part, they cannot be used at all.

FIG. 6 is a circuit diagram of a dimmer passing circuit using the dimmer passing switch of the present invention.
The dimmer passing switch of FIG. 1 will be described based on this circuit diagram.
D, the low (LO) beam signal H
L, the first fixed contact 25 and the second fixed contact 27
I) The beam signal HU and the third fixed contact piece 29 are used as the passing signal HF.

When the light switch 46 is turned on, the headlamp relay 47 is turned on, and at the first position of the push rod 33, the ground line ED and the high beam signal HU are transmitted. First leaf spring contact piece 18, second fixed contact piece 27, first fixed contact piece 2
5 comes into contact, and the high beam lamp 48 on the external circuit is turned on.

Next, in the second position of the push rod 33, the ground line ED and the first signal for the low beam signal HL are set.
The leaf spring contact piece 18 and the second leaf spring contact piece 21 come into contact, and the low beam lamp 49 on the external circuit is turned on.

Next, at the third step position of the push rod 33, the ground line ED, the first leaf spring contact piece 18, the first fixed contact piece 25, and the second fixed contact piece for the high beam signal HU and the passing signal HF. 27 and third fixing piece 29
Contact, the high beam lamp 48 on the external circuit is turned on, and a passing state is established. Also, the light switch 46
Is in the third stage position of the push rod 33 in the off state,
The headlamp relay 47 on the external circuit is turned on by the first leaf spring contact piece 18 for the passing signal HF, and the high beam lamp 48 is turned on to be in the passing state.

As described above, the dimmer passing switch of the present invention has a role of a dimmer switch at the first and second positions of the push rod 33, and has a role of a passing switch at the third position. is there.

The dimmer passing switch of the present invention is configured as a switch unit by housing a spring contact piece, a fixed contact piece, a push rod 33, and the like in the housing 17, so that the dimmer passing switch alone can be used as a completed product. It is also possible to improve the reliability of the confirmation and the assemblability.

[0028]

As described above, two contact portions are provided on the first leaf spring contact piece, and one contact portion is provided on the second leaf spring contact piece. 2 fixed contacts, 3rd
By using a fixed contact piece and two leaf spring contact pieces, it is possible to reduce the thickness and cost.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of one embodiment of a dimmer passing switch of the present invention.

FIG. 2 is a side sectional view for explaining the operation state;

FIG. 3 is a side sectional view for explaining the same operation state.

FIG. 4 is a side sectional view for explaining the operation state;

FIG. 5 is a partial side sectional view for explaining a mounting state of the dimmer passing switch of the present invention to a combination switch.

FIG. 6 is a circuit diagram showing one circuit configuration of the dimmer passing switch of the present invention.

FIG. 7 is an exploded perspective view of a conventional dimmer passing switch.

FIG. 8 is a side sectional view for explaining the same operation state.

FIG. 9 is a side sectional view for explaining the operation state.

FIG. 10 is a side sectional view for explaining the operation state.

[Explanation of symbols]

 18 First leaf spring contact piece 19 Contact part 20 Contact part 21 Second leaf spring contact piece 23 Contact part 25 First fixed contact piece 27 Second fixed contact piece 29 Third fixed contact piece 33 Push rod

Claims (2)

(57) [Scope of request for utility model registration] 1. A first leaf spring contact piece having a connection terminal part (ED) between one end of a fixed part and an external circuit, and two contact parts on a free end side, and the first leaf spring contact piece. A second leaf spring contact piece having a fixed portion at one end and a connection terminal portion (HL) for connecting to an external circuit at one end and a contact portion at one free end side, corresponding to A first and a second fixed contact having a contact surface corresponding to an upper surface and a lower surface of one contact portion of the first leaf spring contact and a connection terminal portion (HU) for an external circuit, and being in a conductive state with each other; A connection terminal portion (HF) for connecting a contact surface corresponding to the lower surface of the other contact portion of the first leaf spring contact piece to an external circuit;
A third fixed contact piece having a lower surface of a flange formed below a push rod that moves linearly in three steps in the vertical direction, an upper surface of the first leaf spring contact, and an upper surface of the second flange attached to the second leaf spring. At the uppermost first stage position of the push rod, the contact portion between the first leaf spring contact piece and the second leaf spring contact piece is separated from the lower surface of the leaf spring contact piece. The contact piece and the first fixed contact piece come into contact with each other, and the connection terminals (ED), (H
U), the first leaf spring contact piece and the first fixed contact piece are separated from each other at the second stage position, and the first leaf spring contact piece and the second leaf spring contact piece are brought into contact with each other to connect the connection terminal portion (ED). ) And (HL), the first leaf spring contact piece and the second leaf spring contact piece are separated from each other at the lowermost third position, and the first leaf spring contact piece is connected to the second and third leaf springs.
The fixed contact pieces are brought into contact, and the connection terminals (ED), (HU),
(HF) A dimmer passing switch configured to conduct between the switches. 2. The first and second leaf spring contact pieces and the first, second, and third fixed contact pieces each have a connection terminal portion with each external circuit so as to maintain a predetermined positional relationship. The housing is made of an insulator so as to protrude from the housing. A projection is provided at a substantially central portion of the lower surface of the housing, and the push rod is inserted into the projection together with a return spring. 2. A dimmer passing switch according to claim 1, further comprising a cover for covering said housing, said guide having a guide portion for said push rod.