JPH088012A - Lamp socket - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lamp socket capable of preventing incorrect insertion of a bulb fixing pin. [Structure] The inner wall 4 has fixing pin insertion grooves 5 and 6,
In the lamp socket 1 in which the fixed pin type electric bulb 20 is mounted, the width of the groove 7S provided in the inner wall 4 for inserting the terminal 2 is smaller than the width of the fixed pins 23 and 24.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a lamp socket,
Particularly, the present invention relates to a lamp socket in a vehicle lamp.

[0002]

2. Description of the Related Art Conventionally, a light bulb for an automobile lamp is
It is widely used to provide a base having a smooth-surfaced cylinder with at least two fixing pins protruding outward in the radial direction, for example. As a lamp socket corresponding to such a fixed pin type electric bulb, one shown in FIG. 6 is known. The negative electrode terminal 42 attached to the lamp socket 40 is provided with a negative electrode spring 42 </ b> C that is in contact with the base 21 of the light bulb 20 and electrically conducts. The negative electrode spring 42C is used for the pushing portion 4 used when assembling the terminal.
It is provided so as to be cut and raised from the flat surface of 2A or to rise with an inclination angle. Therefore, the negative electrode spring 42 is provided on the lamp socket body 41 side.
A terminal insertion groove 43 having a width W1 wider than C is required.

When the light bulb 20 is mounted normally, it is normally shown in FIG.
As shown in the top view of FIG. 3, the fixing pins 23 and 24 are inserted into the fixing pin insertion grooves 45 and 46 which are the regular positions, and the light bulb 20 is fixed at the place where the fixing pins 23 and 24 abut the bottom surfaces of the fixing pin insertion grooves 45 and 46. By rotating in the direction of arrow D in FIG. 6, the fixing pins 23, 24 are fixed pin locking holes 45A, 46.
Move in A. Here, the spring of the positive electrode terminal (not shown) mounted on the bottom surface of the lamp socket body 40 is the light bulb 2.
The bulb 20 is pushed upward from below in contact with the anode 22 of 0, and the fixing pins 23, 24 are locked at the deepest portions of the fixing pin locking holes 45A, 46A by this contact pressure.

[0004]

In the lamp socket 40 having the terminal insertion groove 43 as described above, the light bulb 20 is provided.
As shown in FIG. 8, there is a possibility that an erroneous insertion such as erroneously inserting one of the fixing pins 23 or 24 into the terminal insertion groove 43, which is not the original insertion groove, is performed when inserting. When the resin wall 41A is expanded by the fixing pin 23 when a force is applied when it is inserted in such an erroneous insertion position, the light bulb 20 enters the lamp socket 40 at the erroneous insertion position. Occurs. This is because the width W1 of the terminal insertion groove 43 provided on the lamp socket body 41 side is the width W2 of the fixing pins 23 and 24 of the light bulb 20.
It is wider than the fixed pin insertion hole 4
This is because the work is mistaken for 5 and 46.

As a result of this erroneous insertion, not only the light bulb 20 cannot be lit, but also the negative electrode spring 42C is deformed and damaged by forcibly pushing it in, making subsequent electrical contact impossible. There is fear.

The present invention has been made to solve the above problems and drawbacks, and an object thereof is to provide a lamp socket capable of preventing erroneous insertion of a bulb fixing pin.

[0007]

To achieve the above object, a lamp socket according to the present invention has a fixing pin insertion groove on an inner wall of a lamp socket body, and a lamp socket for mounting a fixing pin type electric bulb is provided with a terminal. The width of the groove formed in the inner wall for inserting the is smaller than the width of the fixing pin.

Alternatively, in order to achieve the above object, the lamp socket according to the present invention is configured such that at least a portion of the terminal that comes into contact with the base of the mounted light bulb is erected inside the inner wall. Is characterized by.

Alternatively, in the lamp socket according to the present invention for achieving the above object, in the above, at least a portion of the terminal that comes into contact with the base of the light bulb to which the terminal is attached is extended from the outside of the window provided on the inner wall to the inside. It is characterized by being configured.

Alternatively, in order to achieve the above object, the lamp socket according to the present invention has a fixing pin insertion groove in the inner wall of the lamp socket body, and in the lamp socket for mounting a fixing pin type electric bulb, the terminal is provided on the inner wall. It is characterized in that it is configured to be locked by using a groove provided inside.

[0011]

The lamp socket of the present invention has a fixing pin insertion groove on its inner wall, and in a lamp socket to which a fixed pin type electric bulb is mounted, the width of the groove provided on the inner wall for inserting a terminal is the fixing pin. Since the width is smaller than the width, the fixing pin does not enter the groove provided on the inner wall, and therefore, incorrect insertion does not occur. Alternatively, in the above-mentioned configuration, erroneous insertion is eliminated by arranging at least a portion of the terminal that comes into contact with the base of the attached light bulb so as to stand inside the inner wall.

Alternatively, at least the portion of the terminal that comes into contact with the base of the mounted light bulb is formed so as to project from the outside of the window provided on the inner wall to the inside, so that it is not necessary to provide a groove on the inner wall, so that incorrect insertion can be prevented. It never happens.
Alternatively, in a lamp socket that has a fixed pin insertion groove on its inner wall and a fixed pin type electric bulb is mounted,
By engaging with the groove provided on the inner side of the inner wall, it is not necessary to provide the groove on the inner wall, and therefore erroneous insertion does not occur.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will now be described with reference to FIGS.
A description will be given based on FIG. FIG. 1 is a partially cutaway exploded perspective view of an embodiment of a lamp socket according to the present invention. Figure 2
[Fig. 2] is a perspective view when a negative electrode terminal is assembled to the lamp socket of Fig. 1. FIG. 3 is a perspective view of a negative electrode terminal in another embodiment of the lamp socket according to the present invention. FIG.
FIG. 9 is an exploded perspective view of still another embodiment of the lamp socket according to the present invention. FIG. 5 is a perspective view when the negative electrode terminal is assembled to the lamp socket of FIG.

Referring to FIG. 1, a lamp socket 1 according to the present invention.
Is provided with a lamp socket body 3 integrally molded of synthetic resin, and a negative electrode terminal 2 and a positive electrode terminal 8 mounted on the lamp socket body 3. The lamp socket body 3 is cylindrical and has a lamp insertion portion 3A at one end thereof.
The connector insertion portion 3B is formed at the other end. Housing grooves 7C to 7F having sides that are bent at a right angle are provided on a disk-shaped flat surface that separates the lamp insertion portion 3A and the connector insertion portion 3B. Furthermore, in the cylinder forming the lamp insertion portion 3A,
A slit 7S that penetrates from the inner wall 4 to the outer wall, extends in the longitudinal direction of the cylinder, and forms an opening 7P at its end is formed. Further, a terminal insertion hole 7 is formed on the outer wall side so as to communicate with the slit 7S.

A negative electrode terminal 2, which will be described later, is mounted in the housing grooves 7C to 7F, the slit 7S and the terminal insertion hole 7. In addition to this, in the approximate center of the disk-shaped plane,
The positive electrode terminal 8 is attached. By mounting the positive electrode terminal 8, the elastic positive electrode spring 8B formed at one end of the positive electrode terminal 8 is exposed in the lamp insertion portion 3A and stands up. On the other hand, the tab 8F formed on the other end of the positive electrode terminal 8 is
It is formed so as to project into the connector insertion portion 3B and is fitted and inserted by a connector (not shown). Furthermore, the lamp insertion part 3A
Fixing pin insertion grooves 5 and 6 extending from the end face to the longitudinal direction of the cylinder are provided on the inner wall 4 side of these fixing pin insertion grooves 5 and 6 and fixing pin locking holes 5A extending at right angles in their bottom portions. , 6A, respectively.

The negative electrode terminal 2 is integrally formed by press bending from one sheet metal. The plate-shaped insertion pushing portion 2A and the negative electrode spring 2B are provided on different sides, and the two sides are connected in a U shape by the connecting portion 2C. Furthermore, the negative electrode spring 2B and the tab 2F are connected to each other in an inverted U shape by the locking portion 2E. Further, the locking portion 2E is provided with a protruding piece 2G having a protruding elasticity.

The negative terminal 2 is mounted on the lamp socket body 3 as shown in FIG. In this mounting, the tab 2F is in the housing groove 7F, the locking portion 2E is in the housing groove 7E, the lower end of the negative electrode spring 2B is in the housing groove 7D, the connecting portion 2C is in the housing groove 7C, and the insertion pushing portion 2A is terminal insertion. The holes 7 are mounted and housed respectively. At this time, the projecting piece 2G of the locking portion 2E is fitted and locked in the locking hole that is continuous with the housing groove 7E. The locking hole is not shown because the drawing is complicated. For the same reason, the positive electrode spring 8B and the positive electrode terminal 8 are also
Illustration is omitted in FIG.

As a result, as shown in FIG. 2, the negative electrode spring 2B is in a state of standing upright inside the inner wall 4. Lamp socket body 3 configured in this way
Then, the base 21 of the light bulb 20 is inserted. The base 21 of the light bulb 20 has a semi-spherical anode 22 at the bottom center thereof.
And a fixing pin 23 protruding in the radial direction on the side surface,
24 are provided. Further, the side surface of the base 21 forms a negative electrode. The base 21 is inserted into the lamp insertion portion 3 so that the fixing pins 23 and 24 are fitted in the fixing pin insertion holes 5 and 6, respectively.
When it is inserted into A, the negative electrode spring 2B is pushed and displaced by the side surface of the base 21 to be extended. Due to the elastic force generated by this, the negative electrode spring 2B comes into strong contact with the base 21 and becomes electrically conductive. At this time, part of the displacement generated in the negative electrode spring 2B is absorbed by the recess 4A provided in the inner wall 4.

The light bulb 20 is pushed further in and the fixing pin 2
Rotate the light bulb 20 in the direction of the arrow D when the fixing pins 3 and 24 abut the bottom surfaces of the fixing pin insertion grooves 5 and 6 to fix the fixing pin 2
3, 24 are moved into the fixing pin locking holes 5A, 6A.
Here, the positive electrode spring 8B of the positive electrode terminal 8 mounted on the lamp socket body 3 contacts the anode 22 of the light bulb 20 and pushes the light bulb 20 upward from below. This allows the light bulb 2
The zero anode 22 and the positive electrode spring 8B are electrically connected. Further, due to this contact pressure, the fixing pins 23 and 24 are locked at the deepest portions of the fixing pin locking holes 5A and 6A, so that the light bulb 20 is mounted in the lamp socket 1.

As described above, in the lamp socket 1 according to the present invention, the groove existing on the end face of the lamp insertion portion 3A is the slit 7S having the narrow opening 7P except the fixing pin insertion grooves 5 and 6. Moreover, as is clear from the figure,
Since the width of the opening 7P is only about the thickness of the thin sheet metal, the relatively thick fixing pins 23 and 24 of the light bulb 20 cannot be inserted into the slit 7S of the opening 7P. Therefore, the operator mistakenly inserts the fixing pins 23, 24 into the fixing pin insertion grooves 5, 6
Insertion into the slit 7S, which is a groove other than the above, cannot occur. That is, in the configuration of the present embodiment, the width of the slit 7S provided in the lamp socket body 3 can be made as thin as the plate thickness, and can be made considerably smaller than the dimensions of the fixing pins 23, 24. As a result, it becomes possible to prevent erroneous insertion of the fixing pins 23 and 24 into the slit 7S.

FIG. 3 shows a perspective view of another embodiment of the lamp socket according to the present invention. In the same figure, the negative electrode terminal 12 is omitted from the outer wide plate-shaped portion forming the insertion pressing portion 2 </ b> A as compared with the negative electrode terminal 2.
Then, the locking portion 1 that connects the negative electrode spring 12B and the tab 12F.
An insertion pusher 12A is provided on the upper end of 2E. As described above, in this embodiment, since the connecting portion 2C in the negative electrode terminal 2 is omitted, the inner wall 54 of the lamp socket 51 is simplified as shown in FIG. That is,
The opening 7P and the slit 7S provided on the wall of the lamp insertion portion 3A in FIG.
The terminal insertion hole 7 provided outside the wall A can be omitted.

The tab 12F of the negative electrode terminal 12 is accommodated in the accommodation groove 57F of the lamp socket 51, and the locking portion 12E is accommodated in the accommodation groove 5F.
7E and the lower end of the negative electrode spring 12B is housed in the housing groove 57D. That is, the negative electrode terminal 12 is formed only by the receiving grooves 57D to 57F located inside the inner wall 54.
It is to be inserted.

As described above, in this embodiment, the groove existing on the end face of the lamp insertion portion is only the fixing pin insertion groove, and no other groove exists. Therefore, it is impossible for an operator to mistakenly insert the fixing pins 23 and 24 into grooves other than the fixing pin insertion grooves 5 and 6.

Next, still another embodiment of the lamp socket according to the present invention will be described with reference to FIGS. 4 and 5. FIG.
In FIG. 5 and FIG. 5, the lamp socket 30 according to the present invention includes a lamp socket body 31 integrally molded of synthetic resin.
And a negative electrode terminal 13 and a positive electrode terminal 38 mounted on the lamp socket body 31. The disc-shaped plane that separates the lamp insertion portion 31A and the connector insertion portion 31B has a housing groove 37E having sides that bend at a right angle.
7F is provided. Further, the cylinder forming the lamp insertion portion 31A is formed with a slit 37S penetrating from the inner wall 34 to the outer wall thereof and extending in the longitudinal direction of the cylinder, and forming an opening 37P at the end thereof. Further, a terminal insertion hole 37 is formed on the outer wall side so as to communicate with the slit 37S.
In addition, a window 34A that connects the terminal insertion hole 37 and the lamp insertion portion 31A is provided on the inner wall 34 that partitions the terminal insertion hole 37 and the lamp insertion portion 31A, and a rib 34B is raised in the window 34A.

These receiving grooves 37E, 37F and slit 3
7S and the terminal insertion hole 37, the negative electrode terminal 1 described later.
3 is attached. In addition to this, the positive electrode terminal 38 is attached to the approximate center of the disk-shaped plane. This positive terminal 3
8 was formed at one end of the positive electrode terminal 38 by mounting
The elastic positive electrode spring 38B is exposed and stands up in the lamp insertion portion 31A. Further, on the inner wall 34 side of the lamp insertion portion 31A, fixing pin insertion grooves 35, 36 extending from the end surface thereof in the longitudinal direction of the cylinder are provided, and these fixing pin insertion grooves 35, 36 are fixed at their bottom portions to extend in a perpendicular direction. The pin locking holes 35A and 36A are in communication with each other.

The negative electrode terminal 13 has a flat plate-like insertion pressing portion 13A.
A negative electrode spring 13B having both sides cut is provided at a position slightly above the center of the. The substantially rectangular negative electrode spring 13B communicates with the insertion pressing portion 13A at the upper side. Negative electrode spring 13
The lower part of B forms a cutout 13D. Further, the flat plate-shaped insertion pressing portion 13A and the tab 13F are connected in a U-shape by a locking portion 13E.

The negative electrode terminal 13 is mounted on the lamp socket body 31 as shown in FIG. In this mounting, the tab 13F is in the accommodation groove 37F, the locking portion 13E is in the accommodation groove 37E, the insertion pressing portion 13A is in the terminal insertion hole 37, and
Each is installed and housed. At this time, as the negative electrode terminal 13 is mounted, the rib 34B provided on the window 34A
Rises in the notch 13D and eventually comes into contact with the lower end of the negative electrode spring 13B. Here, when the insertion pushing portion 13A of the negative electrode terminal 13 is further pushed in, the tip end of the negative electrode spring 13B is bent inward by the inclined surface of the rib 34B. In this state, when the insertion pushing portion 13A is further pushed to a predetermined position, the negative electrode spring 13B pops out from the window 34A into the lamp inserting portion 31A as shown in FIG. To be done.

As a result, as shown in FIG. 5, at least a part of the negative electrode spring 13B is positioned inside the inner wall 34 and is erected. The base 21 of the light bulb 20 is inserted into the lamp socket 30 configured as described above. The fixing pins 23 and 24 are respectively the fixing pin insertion holes 3
When the base 21 is inserted into the lamp insertion portion 31A so as to be aligned with the reference numerals 5 and 36, the negative electrode spring 13B is pushed by the side surface of the base 21 to be displaced and extended. Due to the elastic force generated by this, the negative electrode spring 13B comes into strong contact with the base 21 and becomes electrically conductive.

The light bulb 20 is pushed further in and the fixing pin 2
The light bulb 20 is rotated in the direction of the arrow D when the fixing pins 3, 24 abut the bottom surfaces of the fixing pin insertion grooves 35, 36 to move the fixing pins 23, 24 in the fixing pin locking holes 35A, 36A. Here, attached to the lamp socket body 31,
The positive electrode spring 38B of the positive electrode terminal 38 is connected to the positive electrode 22 of the light bulb 20.
And pushes the light bulb 20 upward from below. The positive electrode spring 38B and the positive electrode terminal 38 are not shown in FIG.

As a result, the anode 22 of the light bulb 20 and the positive electrode spring 38B are electrically connected. Further, by this contact pressure, the fixing pins 23 and 24 are fixed to the fixing pin locking holes 35A,
The light bulb 20 is attached to the lamp socket body 31 by locking at the deepest portion of 36A.

As described above, in the lamp socket 30 according to the present invention, the groove existing on the end face of the lamp insertion portion 31A is only the slit 37S having the narrow opening 37P, except the fixing pin insertion grooves 35 and 36. Moreover, as is clear from the figure, since the width of the opening 37P is only about the thickness of the sheet metal, the light bulb 20 is inserted into the slit 37S of the opening 37P.
The relatively thick fixing pins 23 and 24 cannot be inserted. Therefore, the operator mistakenly inserts the fixing pins 23 and 24 into the slit 37S which is a groove other than the fixing pin insertion grooves 35 and 36.
Inserting into would not be possible. That is,
Also in the configuration of the present embodiment, the width of the slit 37S provided in the lamp socket body 31 can be made as thin as the plate thickness, so that it can be made considerably smaller than the dimensions of the fixing pins 23 and 24. This makes it possible to prevent erroneous insertion of the fixing pins 23 and 24 into the slit 37S.

As described above, in the lamp socket according to the present invention, the groove provided in the lamp socket body for mounting the negative terminal is made sufficiently thin so that the fixing pin of the light bulb cannot be inserted. Alternatively, the groove itself provided in the lamp socket main body is omitted, thereby eliminating erroneous insertion of the lamp into an incorrect groove. In addition, since the fracture surface of the conventional negative electrode spring of the negative electrode terminal contacts the base, problems such as damage to the base and loss of reliability of the contact may occur. The curved surface comes into contact with the base,
This can improve the reliability of the contact.

[0033]

As described above, in the lamp socket according to the present invention, the groove provided in the lamp socket body for mounting the negative terminal is made extremely thinner than the fixing pin of the light bulb, or The groove itself provided in the lamp socket body is omitted so that the fixing pin of the light bulb cannot be inserted. As a result, incorrect insertion into the incorrect groove of the lamp is reliably eliminated, and it is possible to prevent incorrect insertion of the light bulb, and also to eliminate deformation of the negative electrode terminal due to incorrect insertion of the light bulb, and to solve the non-lighted state of the light bulb. is there. Furthermore, the effect of improving the reliability of the contact portion can be realized.

[Brief description of drawings]

FIG. 1 is a partially cutaway exploded perspective view of an embodiment of a lamp socket according to the present invention.

FIG. 2 is a perspective view when a negative electrode terminal is assembled to the lamp socket of FIG.

FIG. 3 is a perspective view of a negative electrode terminal of another embodiment of the lamp socket according to the present invention.

FIG. 4 is an exploded perspective view of still another embodiment of the lamp socket according to the present invention.

5 is a perspective view of the lamp socket of FIG. 4 when a negative electrode terminal is assembled.

FIG. 6 is a perspective view of a conventional lamp socket.

FIG. 7 is a top view when a light bulb is normally attached to a conventional lamp socket.

FIG. 8 is a top view when a light bulb is erroneously attached to a conventional lamp socket.

[Explanation of symbols]

 1, 51, 30 Lamp sockets 2, 12, 13 Negative electrode terminals 2A, 12A, 13A Insertion pressing parts 2B, 12B, 13B Negative electrode springs 2C Connecting parts 2E, 12E, 13E Locking parts 2F, 12F, 13F Tabs 2G, 12G Projection Piece 3, 31 Lamp socket body 3A, 31A Lamp insertion portion 3B, 31B Connector insertion portion 4, 54, 34 Inner wall 4A, 54A Recess 5, 55, 35 Fixing pin insertion groove 5A, 35A Fixing pin locking hole 6, 56, 36 fixing pin insertion groove 6A, 36A fixing pin locking hole 7, 37 terminal insertion hole 7C accommodation groove 7D, 57D accommodation groove 7E, 57E accommodation groove 7F, 57F accommodation groove 7P, 37P opening 7S, 37S slit 8 positive electrode 8B positive electrode 8F tab

Claims (4)

[Claims] 1. A lamp socket having a fixing pin insertion groove on an inner wall of a lamp socket main body, in which a fixed pin type light bulb is mounted, wherein a width of a groove provided on the inner wall for inserting a terminal is defined as a width of the fixing pin. Lamp socket characterized by being smaller than 2. The lamp socket according to claim 1, wherein at least a portion of the terminal that comes into contact with the base of the attached light bulb is erected inside the inner wall. 3. The lamp socket according to claim 1, wherein at least a portion of the terminal, which comes into contact with the base of the light bulb to which the terminal is attached, projects from the outside of the window provided on the inner wall to the inside. . 4. A lamp socket in which a fixed pin insertion groove is provided on an inner wall of a lamp socket body, and a fixed pin type electric bulb is mounted, wherein a terminal is locked by using a groove provided inside the inner wall. The lamp socket characterized in that