JP2500093Y2 - Switch structure for vehicle lighting - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch having a structure in which a fixed terminal of a switch is elastically pressed against a terminal of a light source bulb of a vehicular lamp. It is suitable as a switch for blinking a lamp installed near the seat.

[0002]

2. Description of the Related Art FIG. 5 is a plan view showing a conventional example of this type of switch, and FIG. 6 shows a cross section taken along the line AA '. Reference numeral 1 is a wiring board provided with three positioning protrusions 1a, 1b, 1c. 2 is a light source bulb, which is a fixed terminal 3A
Is in contact with and conducting. A hook-shaped portion 3a is formed on the fixed terminal 3A. The hook-shaped portion 3a is engaged with the positioning protrusion 1b and is fixed to the substrate 1 by a rivet 3c. The fixed terminal 3A is formed by sheet metal working, and one end thereof is bent to form a spring piece 3d. The light source bulb 2 has its terminal abutted against the spring piece 3d, and is pressed by the elastic force of the spring piece. Reference numeral 4 denotes a manual operation lever, which is pivotally attached to the substrate 1 by a pivot pin 5. A ball 6 acting as a movable contact is arranged at one end of the manual operation lever 4, and is biased by a spring 7 in the pushing direction.

Fixed terminals 3B and 3C are provided along a circular arc drawn by the ball 6 when the manual operation lever 4 is rotated around the pivot pin 5, and are opposed to and separated from each other via the fixed terminal 3A. Has been. These fixed terminals 3B and 3C have hook-shaped portions 3a engaged with the positioning protrusions 1a and 1c, respectively, are arranged radially around the pivot pin 5, and are fixed to the substrate 1 by rivets 3c.

According to the switch structure for a vehicle lamp of the above conventional example, in the state of FIG. 5, the fixed terminals 3A and 3B are electrically connected via the ball 6, and the light source bulb 2 is electrically connected to the fixed terminal 3B. . When the operation lever 4 is operated counterclockwise in FIG. 5 to bring the ball 6 into contact with the fixed terminals 3A and 3C, the terminal of the light source bulb 2 is electrically connected to the fixed terminal 3C. In the above operation, the ball 6 is fixed terminal 3A.
Since it gets over and falls between the fixed terminals 3A and 3C,
The operator receives a sense of moderation. Further, the operation position (conduction state) of the switch is stably maintained by the above-mentioned moderation force, and it is safe even if it receives vibration.

[0005]

According to the conventional switch structure shown in FIGS. 5 and 6, a. Assuming that the light source bulb 2 and the switch mechanism are properly grounded, it is not necessary to connect the light source bulb and the switch with an electric wire.

B. Since the operator receives a feeling of moderation, the operation feeling is good and there is no fear of the operation. And c. It has excellent vibration resistance.

Although it has advantages such as the above, since the ball 6 is biased by the spring 7, the structure is complicated and the number of constituent parts is large, so that the assembling work is difficult.

In particular, there is a problem that the ball 6 is repelled by the spring 7 and jumps out during the assembling work and falls off or is lost. Product inspection pass rate is low.

The present invention has been made in view of the above circumstances, and comprises a. Assuming that the light source bulb 2 and the switch mechanism are properly grounded, it is not necessary to connect the light source bulb and the switch with an electric wire.

B. Since the operator receives a feeling of moderation, the operation feeling is good and there is no fear of the operation. And c. It has excellent vibration resistance.

Without detracting from the advantages of the conventional example,
An object is to provide a switch structure having a simple structure and easy to assemble.

[0012]

As a structure for achieving the above object, a switch structure for a vehicle lamp according to the present invention has a structure integrally connected to a spring piece which is pressed into contact with a terminal of a light source bulb of the vehicle lamp and is electrically connected. A fixed terminal provided, a manual operation lever made of an electrically insulating material that is rotatably supported to face the fixed terminal, and a movable member that is attached to the manual operation lever to contact and conduct the fixed terminal. A switch for a vehicular lamp comprising a terminal and a fixed terminal which is installed adjacent to the fixed terminal along an arc of a locus of rotation of the movable terminal, wherein a fixed hemispherical shape is fixed to the fixed terminal. In addition to forming a contact, a slit is formed in a portion of the manual operation lever facing the hemispherical contact portion so as to divide the thickness direction into two parts, and the portion is located near the substrate and far from the substrate. Split into pieces and Separately from the above, a hemispherical movable contact is formed, fixed to a piece close to the substrate and opposed to the substrate, and the elastic contact of the piece close to the substrate presses the movable contact to the fixed contact. Characterize.

[0013]

According to the above construction, the convex movable contact, which is elastically supported by the piece close to the substrate, fits into the concave fixed contact of the fixed terminal, so that a moderation can be obtained. Excellent vibration resistance due to fit (conduction state does not change even when subjected to vibration).

Moreover, since the ball spring means is not used, the assembling work is easy and no special embodiment is required.

[0015]

FIG. 3 is a plan view showing an embodiment of a switch structure of a vehicular lamp according to the present invention and is a view corresponding to FIG. 5 in the above-mentioned conventional example. The BB 'cross section is shown in FIG.
Shown in Reference numeral 1 is a circuit board, and 2 is a light source bulb. An operation lever 8 made of an electrically insulating material (synthetic resin in this example) is pivotally attached to the circuit board 1 by a pivot pin 5 so as to be rotatable. A slit 8 parallel to the substrate 1 is provided in the vicinity of the end of the operation lever 8 facing the light source bulb 2.
a is provided.

On the other hand, a fixed terminal 9A having an L-shaped cross section is formed and fixed to the substrate 1 by a rivet 10. One side of the L shape acts as a spring piece 9a and is pressed against the terminal of the light source bulb 2. Fixed terminals 9B and 9C are provided on both sides of the fixed terminal 9A so as to face each other and be spaced apart from each other.
Reference numerals 1d and 1e shown in FIG. 3 denote stoppers that limit the rotation of the operation lever 8. FIG. 1 shows an enlarged view of a portion D surrounded by a chain line in FIG. 4, and FIG. 2 shows an exploded perspective view of the portion.

As a result of providing the operating lever 8 with the slit 8a,
A piece 8b far from the substrate and a piece 8c close to the substrate are formed. The piece 8c close to the substrate can bend up and down in the figure and can function as a leaf spring. The movable contact 11a is fixed to the surface of the piece 8c facing the substrate 1.

The piece 8b far from the substrate abuts against the stoppers 1d and 1e shown in FIG. 3 to maintain the strength and rigidity required to regulate the turning angle of the operating lever 8.

As shown in FIG. 2, the movable contact 11a described above is used.
Has a hemispherical shape and bulges downwardly, and the fixed contact 9c has an upwardly concave hemispherical shape (specifically, a shape forming a part of the hemispherical surface). The movable contact 11a is shown in FIG.
When the fixed contacts 9A and 9B are pressed into contact with each other and fitted into the spherical recesses as indicated by arrow e, the fixed contacts 9A and 9B are brought into conduction. Reference numeral 9b shown in FIG. 2 is a hole or a recess that fits into a terminal of the light source bulb (not shown), and thereby the terminal of the light source bulb is electrically connected to the fixed terminal 9B via the fixed terminal 9A and the movable contact piece 11. . In this state, since the convex movable contact 11a is fitted to the concave fixed contact 9c, there is a possibility that the operation lever 8 will rotate and the contact conduction state will naturally change even if it receives vibration or impact. There is no. Further, when the operation lever 8 is turned, the movable contact 11a rides over the fixed contact 9c and then drops to another fixed contact (for example, 9c 'in FIG. 2), which gives the operator a moderation feeling and a feeling. good. As described above, the present embodiment is provided with moderation without using the ball spring means as in the conventional example shown in FIG.
There is no difficulty in assembling the ball spring means.

[0020]

EFFECTS OF THE INVENTION As described above, a fixed terminal integrally connected to a spring piece that is pressed into contact with and electrically connected to a terminal of a light source bulb of a vehicular lamp, and an electric device rotatably supported to face the fixed terminal. A manual operating lever made of an insulating material, a movable terminal attached to the manual operating lever for contacting and conducting with the fixed terminal, and installed adjacent to the fixed terminal along a rotation locus arc of the movable terminal. The present invention is applied to a switch of a vehicular lamp having a fixed terminal, and a concave hemispherical fixed contact is formed on the fixed terminal, and the manual operation lever is provided with the hemispherical contact portion. In the portion facing to, a slit having a shape that bisects the thickness direction is provided, and the portion is divided into a piece close to the substrate and a piece far from the substrate,
A structure in which a movable contact having a hemispherical shape is formed separately from the above and fixed to a piece close to the substrate so as to face the board, and the movable contact is pressed against the fixed contact by spring elasticity of the piece close to the board. Then, a. Assuming that the light source bulb 2 and the switch mechanism are properly grounded, it is not necessary to connect the light source bulb and the switch with an electric wire.

B. Since the operator receives a feeling of moderation, the operation feeling is good and there is no fear of the operation. And c. It has excellent vibration resistance.

Without detracting from the advantages of the conventional example,
A switch having a simple structure and easy to assemble can be configured.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part in an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the main part.

FIG. 3 is a plan view of the embodiment.

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

FIG. 5 is a plan view of a conventional switch structure.

6 is a sectional view taken along the line AA ′ of FIG.

[Explanation of symbols]

1 ... Substrate 1a, 1b, 1c ... Positioning protrusions 1d, 1
e ... Stopper, 2 ... Light source bulb, 3A, 3B, 3C ... Fixed terminal, 3a ... Hook portion, 3c ... Rivet, 3d ... Spring piece, 4 ... Operation lever, 5 ... Pivot pin, 6 ... Ball, 7
... Spring, 8 ... Operating lever, 8a ... Cutting, 9A,
9B, 9C ... fixed terminal, 9a ... spring piece, 9c ... hemispherical concave fixed contact, 10 ... rivet, 11a ... movable contact.

Claims (1)

(57) [Scope of utility model registration request] 1. A pressure contact with a terminal of a light source bulb of a vehicle lamp,
A fixed terminal integrally connected to the spring piece to be conducted, a manual operation lever made of an electrically insulating material rotatably supported to face the fixed terminal, and a manual operation lever attached to the manual operation lever. A switch for a vehicle lamp, comprising: a movable terminal that contacts and conducts with a fixed terminal; and a fixed terminal that is installed adjacent to the fixed terminal along an arc of a rotation trajectory of the movable terminal. In addition to forming a concave hemispherical fixed contact on the, the portion where the manual operation lever is opposed to the hemispherical contact portion is provided with a notch that divides the thickness direction into two parts. It is divided into a piece close to the board and a piece far from the board, and a hemispherical movable contact is formed separately from the above, fixed to the piece close to the board and made to face the board, and the piece close to the board Spring elasticity presses the movable contact to the fixed contact. Characterized in that allowed, switch of a vehicle lamp.