JPH07312272A - Lamp socket - Google Patents

Abstract

PURPOSE:To provide a socket improved in mounting property of lamp. CONSTITUTION:A socket 1 has a holding part 14 for inserting the base 4 of a lamp 2, a first contact piece 16 situated on the side surface of the holding part 14 and making contact with the base 4, and a second contact piece 17 situated on the bottom part of the holding part 15 and making contact with a bottom surface terminal 6. The first contact piece 16, which is elastic, is evacuated to the outside when the base 4 is advanced into the holding part 15, returned in the state where the bottom surface terminal 6 is in contact with the second contact piece 17, and engaged with the spiral groove 7 of the base 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a socket for holding and supplying power to a lamp having a base.

[0002]

2. Description of the Related Art Conventionally, in a domestic refrigerator, for example, Japanese Patent Laid-Open No. 4-194579 (F25D27 / 0) is used.
0) and Japanese Utility Model Publication No. 4-34390 (F25D27 / 0).
As shown in 0), an incandescent lamp is used as an interior lamp, and this lamp is held in a socket for power supply, and this socket is fixed to a mounting side or the like provided in the compartment. It was installed in the refrigerator.

In this case, the lamp is provided with a bulb containing a filament and a base provided at the lower end of the bulb, a screw groove is cut on the side surface of the base, and a bottom terminal is provided on the bottom surface of the lamp. ing. On the other hand, in a conventional socket, a holding portion into which a cap is inserted, a first contact piece formed on a side surface of the holding portion and having a screw groove, and a second contact piece located on a bottom surface of the holding portion. And the base of the lamp is inserted into the holding portion of the socket, and the base is screwed into the first contact piece so that both are brought into contact with each other to conduct electricity, and further screwed to make the bottom terminal contact. The lamp was attached to the socket by bringing the two contact pieces into contact with each other to make them conductive.

[0004]

As described above, in the prior art, since the lamp is attached to the socket by inserting the base into the holding portion of the socket and rotating and screwing the lamp into the socket, in particular, the lamp is stored in a refrigerator like a refrigerator. In the case of the one that is attached to the inner back part (upper front surface of the back wall, etc.), there is a problem that it is extremely complicated because the installation work is in a state of being felt by hand.

The present invention has been made in order to solve the above-mentioned conventional technical problems, and an object thereof is to provide a socket in which the workability of mounting the lamp is improved.

[0006]

A lamp socket according to a first aspect of the present invention holds a lamp having a base having a screw groove formed on a side surface and a bottom terminal provided on a bottom surface. , This socket has a holding part where the base is inserted,
The first contact piece is provided on a side surface of the holding portion and comes into contact with the base, and the second contact piece is provided at the bottom portion of the holding portion and comes into contact with the bottom terminal. It has elasticity and retreats to the outside when the mouthpiece enters the holding portion, and returns while the bottom terminal is in contact with the second contact piece and engages with the screw groove.

A lamp socket according to a second aspect of the present invention holds a lamp having a base having a threaded groove formed on a side surface thereof and a bottom terminal provided on a bottom surface thereof. A first contact piece having a pair of elastic vertical sides that stand opposite to each other on the side surfaces of the holding part and that are in contact with the mouthpiece, and are located at the bottom of the holding part. A second contact piece that comes into contact with the bottom terminal, and both elastic vertical sides are deformed outward when the mouthpiece enters the holding portion, and the bottom terminal is in contact with the second contact piece. It returns and engages with the screw groove.

In addition to the above inventions, the lamp socket of the third aspect of the present invention is such that the second contact piece always urges the base in the direction of pushing it out from the holding portion.

[0009]

According to the lamp socket of the present invention, when the base of the lamp is inserted into the holding portion of the socket, the first contact piece (the elastic vertical side) is retracted by its elasticity and the bottom terminal is provided. Since the first contact piece is returned in a state of being in contact with the second contact piece and engages with the screw groove of the base, the lamp is held in the holding part of the socket by simply inserting the base into the holding part, It will be possible to supply power. Therefore, the operation of attaching the lamp to the socket becomes remarkably easy, and in particular, a great effect is exerted when the lamp is attached to the back of a refrigerator or the like.

The first contact piece also engages with the threaded groove of the base by inserting the base of the lamp into the holding portion and rotating it. Further, when the lamp is removed from the socket, if the lamp is rotated in the opposite direction, the first contact piece (elastic vertical side) engages with the screw groove of the base, and the base is removed from the holding portion.
Therefore, according to the socket of the present invention, it is possible to attach and detach the lamp by usual screwing.

In particular, in the invention of claim 2, the first contact piece of the socket has a pair of elastic vertical sides which stand upright on the side surfaces of the holding portion so as to face each other and contact the respective bases. The elastic vertical side is deformed outward by the entrance of the base and returns to engage with the screw groove of the base, so that the holding force of the lamp is further improved.

Further, according to the invention of claim 3, since the second contact piece always urges the mouthpiece in the direction of pushing it out from the holding portion, the first contact piece (elastic longitudinal side) and the threaded groove of the mouthpiece. Will be more reliably engaged. Therefore, the mounting state of the lamp becomes more stable.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a vertical sectional side view showing a state in which a lamp 2 is attached to a socket 1 according to an embodiment of the present invention. Lamp 2
Glass bulb 3 with built-in filament not shown
And a cylindrical base 4 made of a conductive metal attached to the lower end of the bulb 3 and a bottom terminal 6 located on the bottom of the lamp 2 and projecting downward, which is an ordinary incandescent lamp. A threaded groove 7 is cut on the side surface of 4.

On the other hand, the socket 1 is composed of a core 11 formed of a synthetic resin such as nylon, and a cover layer 12 formed of a synthetic resin such as vinyl chloride formed so as to cover the periphery of the core 13 to form a main body 13. Is configured. The core 11 has a dimension such that the base 4 of the lamp 2 can be inserted into the core 11 and has one end open upward in FIG.
4 is formed, and the coating layer 12 further extends upward from the opening of the holding portion 14 and opens.

The core 11 of the socket 1 has a first contact piece 16 and a second contact piece 17 each made of a conductive metal.
Is buried. As shown in FIG. 2, the first contact piece 16 has a flat plate annular (doughnut-shaped) bottom side 21 and a pair of flat plate strip-shaped elastic vertical sides 22 that are erected opposite to each other from both sides on the diameter of the bottom side 21. , 22 and a plug portion 23 extending outward from the bottom side 21. The elastic vertical sides 22 and 22 have conical engaging protrusions 2 protruding inward.
Two and four 4 and 24 are respectively formed on the upper and lower sides, and the upper end thereof is bent outward at an acute angle to form a bent portion 26.
The engagement protrusion 24 is sized to slidably engage with the threaded groove 7 of the lamp 2.
The upper and lower intervals of 24 are the same as the pitch of the spiral of the screw groove 7.

On the other hand, on the side wall of the holding portion 14 of the core 11, vertical grooves 27, 27 extending vertically as shown in FIG.
Are formed to face each other. Then, the bottom side 21 of the first contact piece 16 is buried below the holding portion 14, and the plug portion 23 thereof extends outward and upward and is exposed from the side surface of the core 11, and inside the opening 28 of the coating layer 12. Facing. Further, the elastic vertical sides 22, 22 correspond to the insides of the vertical grooves 27, 27, and the bent portions 26, 26 at the upper ends are the vertical grooves 27, 27, respectively.
It has entered the inside of 27 and is in contact with the core 11 as shown in FIG.
Thereby, the elastic vertical sides 22, 22 are opposed to each other and positioned on the side surface of the holding portion 14.

On the other hand, the second contact piece 17 is formed by bending a strip shape into an acute angle and is embedded in the core 11. The bent portion at one end of the second contact piece 17 is the bottom side of the first contact piece 16. 21 is exposed from the central opening portion to the bottom surface of the holding portion 14, and further, the plug portion 31 extending outward from the bent portion is exposed from the side surface of the core 11 and below the plug portion 23. Facing the inside of the opening 28.

A plug of a power supply lead wire (not shown) is inserted into the opening 28 of the socket 1 and the opening 28
Inside, it is connected to both the plug portions 23 and 31. Then, the socket 1 is attached to the interior of the refrigerator (not shown) inside the refrigerator (upper back wall or the like).

Next, the procedure for attaching the lamp 2 to the socket 1 with the above configuration will be described with reference to FIGS. 4 and 5. First,
The base 4 of the lamp 2 is inserted into the holding portion 14 of the socket 1 as shown by the arrows in FIGS. Eventually, both sides of the lower end of the base 4 come into contact with the engaging projections 24, 24 of the elastic vertical side 22, but by further inserting the base 4, the engaging projection 2
4, 24 are pushed outward, and the elastic vertical sides 22, 22 are deformed outward and enter the vertical grooves 27, 27. At this time, the bent portions 26, 26 are deformed so as to be bent at an acute angle.

The elastic vertical side 2 of such a first contact piece 16
The cap 4 of the lamp 2 is held by the holding portion 14 by the deformation of
You can enter inside. Then, when the lower part of the threaded groove 7 of the base 4 has passed over the two engaging projections 24, 24, the bottom surface terminal 6 comes into contact with the bent portion of the second contact piece 17 and is deformed so as to push it down. Let

In this state, the elastic vertical sides 22, 22 are returned to the inner side by the restoring force of the bent portions 26, 26, and the engaging protrusions 2
4 ... are slidably engaged with the screw groove 7 of the base 4 at positions facing each other (FIG. 1). As a result, the lamp 2 cannot be pulled out as it is. In particular, the second contact piece 17 always urges the mouthpiece in the direction to push it out from the holding portion 14 by the restoring force of the bent portion, so that the engagement between the engaging projections 24 ... And the screw groove 7 is further enhanced. As a result, the retaining effect is improved.

Thus, according to the socket 1 of the present invention,
By simply inserting the base 4 of the lamp 2 into the holding portion 14 of the socket 1, the lamp 2 can be held in the holding portion 14 of the socket 1 and power can be supplied. The mounting work becomes extremely easy, and in particular, when the lamp is mounted in the back of a refrigerator or the like, a great effect is achieved.

In the socket 1 of the present invention, the engaging projections 24 of the elastic vertical sides 22, 22 can also be obtained by inserting the base 4 of the lamp 2 into the holding portion 14 and rotating (clockwise).
Engages with the threaded groove 7 of the base 4. Further, when the lamp 2 is removed from the socket 1, the lamp 2 is rotated in the opposite direction (clockwise) so that the protrusions 24 of the elastic vertical sides 22, 22 are engaged with the screw groove 7. Then, the base 4 is separated from the holding portion 14. Therefore, according to the socket 1 of the present invention, it is possible to attach and detach the lamp 2 by usual screwing.

Next, FIGS. 6 to 8 show another embodiment of the socket 1 of the present invention. 1 to 5 in each figure.
Those denoted by the same reference numerals as are the same. In this case as well, the socket 1 has a main body 43 composed of a core 41 formed of a synthetic resin such as nylon and a coating layer 42 formed of a synthetic resin such as vinyl chloride formed so as to cover the periphery thereof. Has been done. Similarly, the core 41 is formed with a holding portion 44 having a circular cross-section with a size into which the base 4 of the lamp 2 can be inserted and one end of which is open upward in FIG. The opening of the portion 44 is further extended upward from the opening.

A first contact piece 46 and a second contact piece 47, which are also made of conductive metal, are embedded in the core 41 of the socket 1. The first contact piece 46 has elasticity and is bent into a substantially inverted V shape as shown in FIG. 6, is embedded in the core 41, and its engaging end portion 49 is provided from the side surface of the holding portion 44. It projects diagonally downward. Further, a lead wire 48 is connected to the first contact piece 46 and is drawn out from the side surface of the socket 1 to the outside.

The engaging end 49 is sized so as to be slidably engaged with the screw groove 7 of the lamp 2. Further, a spiral projection 51 having a size that engages with the screw groove 7 is integrally formed on the side wall of the holding portion 44 facing the first contact piece 46.

On the other hand, the second contact piece 47 is also formed by bending a strip-shaped one at an acute angle and is embedded in the core 41, and the bent portion at one end thereof is on the bottom surface of the holding portion 44. Exposed. Further, the lead wire 52 is connected to the second contact piece 47, and is drawn outward from the side surface of the socket 1 below the lead wire 48. Then, the socket 1 is likewise attached to the inside of the refrigerator (not shown) such as the upper portion of the back wall.

Next, the procedure for attaching the lamp 2 to the socket 1 in this case will be described with reference to FIGS. 7 and 8 with the above configuration. First, the base 4 of the lamp 2 is inserted into the holding portion 44 of the socket 1 as shown by the arrows in FIGS. Eventually, the lower end of the base 4 comes into contact with the engaging end 49, but by further inserting the base 4, the engaging end 49 is deformed downward and pushed outward.

The engaging end 49 of the first contact piece 46 as described above.
The deformation of the lamp allows the base 4 of the lamp 2 to enter the holding portion 44. Then, the threaded groove 7 of the base 4 has the spiral projection 51.
At the stage of overcoming the engaging end portion 49, the bottom terminal 6 contacts the bent portion of the second contact piece 47 and deforms it so as to push it down.

In this state, the engaging end portion 49 is returned to the upper inside by the restoring force, and slidably engages with the screw groove 7 of the base 4 (FIG. 6). As a result, the lamp 2 cannot be pulled out as it is. In particular, since the second contact piece 47 always urges the mouthpiece in the direction of pushing it out of the holding portion 44 by the restoring force of the bent portion thereof, the engagement between the engagement end portion 49 and the screw groove 7 becomes more reliable. , The retaining effect is improved.

Similarly, the base 4 of the lamp 2 is attached to the holding portion 44.
The spiral projection 51 and the engaging end portion 49 are also engaged with the threaded groove 7 of the base 4 by inserting the same into and rotating (clockwise). Also, when removing the lamp 2 from the socket 1,
Similarly, by rotating (clockwise) the lamp 2 in the opposite direction, the base 4 is engaged with the engagement end 49 engaged with the screw groove 7.
Is separated from the holding portion 44. Therefore, the socket 1 in this case also allows the lamp 2 to be attached / detached by usual screwing.

[0032]

As described above in detail, according to the present invention, by inserting the base of the lamp into the holding portion of the socket, the first contact piece is retracted to the outside by its elasticity, and the bottom terminal is moved to the first position. The first contact piece returns in contact with the second contact piece,
Since it engages with the threaded groove of the base, the lamp can be held in the holding part of the socket and power can be supplied only by inserting the base into the holding part. Therefore, the operation of attaching the lamp to the socket becomes remarkably easy, and in particular, a great effect is exerted when the lamp is attached to the back of a refrigerator or the like.

Then, insert the base of the lamp into the holding portion,
The first contact piece also engages with the screw groove of the base by rotating, and when removing the lamp from the socket, if the lamp is rotated in the opposite direction, the first contact piece will be screwed into the base. Since the base is detached from the holding portion while engaging with the mating groove, it is possible to attach and detach the lamp by usual screwing.

In particular, according to the invention of claim 2, the first contact piece of the socket has a pair of elastic vertical sides which stand upright on the side surfaces of the holding portion so as to face each other and contact the respective bases. The elastic vertical side is deformed outward by the entrance of the base and returns to engage with the screw groove of the base, so that the holding force of the lamp is further improved.

Further, according to the invention of claim 3, the second contact piece always urges the mouthpiece in the direction of pushing it out from the holding portion, so that the engagement between the first contact piece and the screw groove of the mouthpiece is ensured. It will be more certain. Therefore, the mounting state of the lamp becomes more stable.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing a state in which a lamp of a socket according to an embodiment of the present invention is attached.

FIG. 2 is a perspective view of a first contact piece of the present invention.

FIG. 3 is an enlarged vertical side view of the socket of the first contact piece of the present invention.

FIG. 4 is a vertical cross-sectional side view of the socket for explaining the work of mounting the lamp on the socket of FIG.

5 is a vertical sectional side view of the socket for explaining the work of mounting the lamp in the socket of FIG. 1. FIG.

FIG. 6 is a vertical cross-sectional side view of a socket of another embodiment of the present invention with a lamp attached.

7 is a vertical cross-sectional side view of the socket for explaining the work of attaching the lamp to the socket of FIG.

FIG. 8 is a vertical sectional side view of the socket for explaining the work of attaching the lamp to the socket of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Socket 2 Lamp 4 Base 7 Threading groove 14, 44 Holding part 16, 46 1st contact piece 17, 47 2nd contact piece 22 Elastic vertical side 24 Engagement protrusion

Claims (3)

[Claims] 1. A socket for holding a lamp having a base having a screw groove formed on a side surface and a bottom terminal provided on the bottom, the socket including a holding portion into which the base is inserted, and the holding portion. A first contact piece that is located on a side surface of the portion and that contacts the base, and a second contact piece that is located on the bottom portion of the holding portion and that contacts the bottom terminal, wherein the first contact piece is It has elasticity and retracts to the outside when the mouthpiece enters the holding portion, and returns while the bottom surface terminal is in contact with the second contact piece and engages with the screw groove. Characteristic lamp socket. 2. A socket for holding a lamp having a base having a screw groove formed on a side surface and a bottom terminal provided on the bottom, the socket including a holding portion into which the base is inserted, and the holding portion. A first contact piece that has a pair of elastic vertical sides that respectively stand on the side surfaces of the portion and that is in contact with the base, and a second contact piece that is located at the bottom of the holding portion and that contacts the bottom terminal. And the elastic longitudinal sides are deformed outward when the mouthpiece enters the holding portion,
A lamp socket, wherein the bottom terminal is returned in a state of being in contact with the second contact piece and is engaged with the screw groove. 3. The lamp socket according to claim 1, wherein the second contact piece always biases the base in a direction to push the base from the holding portion.