JPH08306456A - Lamp socket - Google Patents

Abstract

PURPOSE: To prevent movements of a contact piece part and a lock piece part from exerting influence on each other. CONSTITUTION: A connecting terminal 41 is housed in a socket main body 11. A lamp pin inserting hole 23 and an electric wire inserting hole 17 are arranged in a front wall part 16 of the socket main body 11. A pair of inserting grooves 29a and 29b are arranged between the lamp pin inserting hole 23 and the electric wire inserting hole 17 in an inside surface of the front wall part 16 as well as in the direction where its lamp pin inserting hole 23 and the electric wire inserting hole 17 are juxtaposed. The connecting piece part 41 is provided with a pair of support piece parts 42a and 42b to be inserted into the respective inserting grooves 29a and 29b. A connecting piece part 43 is arranged to connect mutual end parts on the opposite side of inserting directional end parts of a pair of support piece parts 42a and 42b. A contact piece part 44 arranged so as to face the inside of the lamp pin inserting hole 23 from the inserting directional end part of one support piece part 42a is provided. A lock piece part 45 arranged so as to face the inside of the electric wire inserting hole 17 from the inserting directional end part of the other support piece part 42b is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp socket for connecting a fluorescent lamp.

[0002]

2. Description of the Related Art A conventional lamp socket is shown in FIG.
As shown in, the socket body 1 and the connection terminal 2 are provided,
The socket body 1 is provided with a lamp pin insertion hole 1b and a wire insertion hole 1c in the front wall portion 1a, and the connection terminal 2 is inserted into the lamp pin from the upper end of a supporting piece portion 2a supported in parallel with the front wall portion 1a of the socket body 1. The contact piece portion 2b arranged inside the hole 1b is formed, and the locking piece portion 2c arranged inside the electric wire insertion hole 1c from the lower end of the support piece portion 2a is formed.

However, when the electric wire inserted into the electric wire insertion hole 1c is held in the locked state by the locking piece portion 2c, the lamp pin of the fluorescent lamp is inserted into the lamp pin insertion hole 1b and the contact piece portion 2b is When pushed, the pushing force is transmitted to the locking piece 2c via the support piece 2a, which affects the clamping force of the electric wire by the locking piece 2c.

Further, as shown in FIG. 6, the support piece 2a of the connection terminal 2 is formed along the insertion direction perpendicular to the inner surface of the front wall 1a. The contact piece 2b is formed from the opposite end, and the locking piece 2c is formed from the end of the support piece 2a in the insertion direction. When the contact piece 2b is formed from the end opposite to the inserting direction of the support piece 2a,
Since the contact force of the contact piece portion 2b with respect to the lamp pin inserted into the lamp pin insertion hole 1b is reduced, the support piece portion 2a and the contact piece portion 2b for the purpose of ensuring the contact force of the contact piece portion 2b.
An extremely small bent part 2d at the connecting part with
Is formed.

However, since a concentrated internal stress exists in the bent portion 2d, if the pushing and pushing of the contact piece portion 2b is repeated due to the insertion and removal of the lamp pin, the bent portion 2d is liable to be settled, and the contact piece portion 2d tends to be depressed. There is a problem that the contact force of the 2b with the lamp pin is reduced.

[0006]

As described above, in the conventional lamp socket, there is a problem that the movements of the contact piece and the locking piece influence each other, and the contact force of the contact piece on the lamp pin is reduced. There's a problem.

The present invention has been made in view of the above circumstances, and prevents the movement of the contact piece and the locking piece from affecting each other, while maintaining the function of the contact piece for a long period of time. Moreover, it is an object of the present invention to provide a lamp socket in which the connection terminal can be easily incorporated in the socket body.

[0008]

In the lamp socket of the present invention, a lamp pin insertion hole and an electric wire insertion hole are formed in a front wall portion, and the lamp pin is provided between the lamp pin insertion hole and the electric wire insertion hole on the inner surface of the front wall portion. A socket body in which a pair of insertion grooves are formed in a direction in which the insertion hole and the wire insertion hole are arranged, a pair of support piece portions to be inserted into the insertion groove portions of the socket body, and an insertion direction of the pair of support piece portions Connecting piece portion for connecting between the end portions opposite to the end portions, a contact piece portion disposed so as to face the inside of the lamp pin insertion hole from the end portion of one supporting piece portion in the insertion direction, and the other supporting portion. A connection terminal having a locking piece arranged so as to face the inside of the electric wire insertion hole from an end of the piece in the insertion direction.

[0009]

In the lamp socket of the present invention, a pair of support piece portions to be inserted into the pair of insertion grooves of the socket body are formed,
Since the contact piece is formed from one support piece and the locking piece is formed from the other support piece, the movements of the contact piece and the locking piece are unlikely to affect each other. Moreover, the contact piece is formed from the end of the support piece in the insertion direction, and the contact force of the contact piece with the lamp pin of the fluorescent lamp is secured.
Furthermore, the connecting piece is pushed to insert each supporting piece into the insertion groove of the socket body.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a lamp socket for one lamp will be described below as an embodiment of the present invention with reference to FIGS.

In FIGS. 1 and 2, reference numeral 11 denotes a socket main body. The socket main body 11 is attached to both ends of a main body of a lighting fixture (not shown) so as to be electrically connected to a lighting device of the lighting fixture. The base portion of each end of the straight tube type fluorescent lamp is connected.

At the lower part of the socket body 11 shown in the figure, a mounting portion 12 for mounting to the instrument body is formed, and at the upper portion of this mounting portion 12 is formed a socket portion 13 for connecting a straight tube type fluorescent lamp.

The socket body 11 is provided with a body case 14 and a cover 15 which is detachably fitted to the back surface of the body case 14 and fixed by screws.

The mounting portion 12 of the front wall portion 16 of the main body case 14 has a pair of left and right wire insertion holes 17 formed therein, and a release operation hole 18 formed above each wire insertion hole 17. There is.

Socket portion 13 of front wall portion 16 of body case 14
A circular opening 19 is formed in this, and the operating plate 20 is fitted into this opening 19 from the inside of the main body case 14. The working plate 20 has a circular base receiving portion that can be fitted into the opening 19.
21 is formed, and a flange portion 22 that engages from the peripheral edge portion of the mouthpiece receiving portion 21 to the rear surface side peripheral edge of the opening portion 19 is formed.
In the base receiving portion 21, a pair of lamp pin insertion holes 23 are horizontally formed, a guide pin 24 is projectingly formed on the back surface between the lamp pin insertion holes 23, and in the peripheral portion of the flange portion 22, A plurality of guide grooves 25 are formed. The actuating plate 20 is supported movably in the front-rear direction along the guide pieces 26 by engaging the guide grooves 25 with the plurality of guide pieces 26 formed to project from the inner wall of the main body case 14. There is.

Inside the main body case 14, a pair of terminal mounting portions 27 are formed between each electric wire insertion hole 17 on both sides of the mounting portion 12 and each lamp pin insertion hole 23 of the socket portion 13. Each terminal mounting portion 27 has side walls 28 on both sides formed so as to project from the inner surface of the front wall portion 16 of the main body case 14, and a pair of insertion grooves 29a, 29b are vertically formed on the inner surface of each side wall 28. Cylindrical bosses 30 serving as terminal holding portions on the main body case 14 side are formed to project from the inner surface of the front wall portion 16 between the pair of insertion grooves 29a and 29b so as to be spaced apart from each other. The pair of insertion grooves 29a and 29b and the boss 30 are formed in a direction perpendicular to the front wall portion 16, and the boss 30 is formed to have a projecting dimension smaller than that of the side wall 28.

A wire insertion portion 31 is formed in communication with an end portion of each terminal mounting portion 27 on the mounting portion 12 side, and a wire holding surface 32 is formed on an end surface orthogonal to the side wall 28 of the wire insertion portion 31. A partition plate 33 is formed so as to project in the middle of the wire holding surface 32.
Each electric wire insertion hole 17 is opened at both sides of the partition plate 33 along the electric wire holding surface 32 of each electric wire insertion portion 31.

The cover 15 is formed with a cylindrical boss 34 as a terminal holding portion corresponding to the position of the boss 30 of the main body case 14, and an electric wire guide to be inserted above each electric wire insertion portion 31. The part 35 is formed.

Further, 41 is a connection terminal, and this connection terminal 41
As shown in FIG. 3, is formed by bending a single metal plate having electrical conductivity and spring properties.
Of the pair of support pieces 42 to be inserted into the respective insertion grooves 29a, 29b of
A pair of support piece portions 42a, 42b is formed with a substantially flat connecting piece portion 43 for connecting between the opposite end portions of the pair of support piece portions 42a, 42b in the insertion direction, and one support piece portion 42a is formed. A contact piece portion 44 is formed so as to face the inside of the lamp pin insertion hole 23 from the end portion in the insertion direction, and the contact piece portion 44 is formed inside the electric wire insertion hole 17 from the insertion end portion of the other support piece portion 42b. A locking piece portion 45 that is disposed so as to face is formed.

As shown in FIG. 3, the contact piece portion 44 is in the state before being assembled into the socket body 11, and extends from the end portion of the support piece portion 42a toward the first diagonally upward direction opposite to the inserting direction. The part 44a is bent and the first piece 44a is formed.
A second piece 44b is formed by bending from the tip of a toward the insertion direction substantially parallel to the support piece 42a.
A third piece 44c is bent and formed from the tip of the to the diagonally upward direction.

The locking piece portion 45 is formed by bending from the end of the support piece portion 42b toward the diagonally lower side opposite to the inserting direction,
The tip end side is divided into two parts in the width direction through the slit 46, and is configured to be independently movable.

The connecting piece portion 43, the connecting piece portion of the supporting piece portion 42a and the contact piece portion 44, and the connecting portion of the supporting piece portion 42b and the locking piece portion 45 are formed to have narrow widths, respectively. 42b, the contact piece portion 44, and the locking piece portion 45 are formed wide at their tip ends. Then, on both sides of the wide support piece portions 42a and 42b, insertion edge portions 47 to be inserted into the insertion grooves 29a and 29b are formed.

Next, the operation of this embodiment will be described.

To assemble the lamp socket, first,
From the rear side of the main body case 14, the operating plate 20, by engaging each guide groove 25 of the operating plate 20 with each guide piece 26 of the main body case 14,
Insert it inside the socket 13.

Next, the connection terminals 41 are attached to the terminal mounting portions 27 from the back side of the body case 14. That is, the insertion edge portions 47 on both sides of the support piece portions 42a and 42b of the connection terminal 41 are engaged with the insertion grooves 29a and 29b of the terminal mounting portion 27, respectively, and the connection piece portion 43 is inserted in the insertion direction. Pressing and supporting piece 42a,
42b are inserted into the insertion grooves 29a and 29b, respectively, and the contact piece 44
Is pressed against the operating plate 20, and the locking piece portion 45 is inserted into the electric wire insertion portion 31. As a result, each contact piece 44 is
20 is pressed forward and arranged so as to face the inside of each lamp pin insertion hole 23, and each locking piece portion 45 is arranged so as to face the inside of each electric wire insertion hole 17. Further, the connecting piece portion 43 comes into contact with the end surface of the boss 30 to determine the insertion position.

Next, the cover 15 is fitted on the back surface of the main body case 14 and is integrally fixed by screws (not shown) screwed to the cover 15 from the front side of the main body case 14. This allows
The boss 34 of the cover 15 contacts the connecting piece 43 of the connection terminal 41,
A connection terminal 41 is provided between the boss 34 and the boss 30 of the body case 14.
The connecting piece portion 43 of is clamped. In addition, each electric wire guide portion 35 is arranged above each electric wire insertion portion 31.

Further, the assembled lamp socket is
It is attached to both ends of the main body of the lighting fixture via the mounting portion 12, and the electric wire drawn from the lighting device of the lighting equipment is inserted into each electric wire insertion hole 17 of the mounting portion 12 and electrically connected. To be done. Then, between the opposing lamp sockets, the lamp pins at each end are fitted with the lamp pin insertion holes 23.
Inserted into a straight tube fluorescent lamp.

The electric wire to be inserted into the electric wire insertion hole 17 is a locking piece.
While pushing 45, it is inserted between the locking piece 45 and the wire holding surface 32, and the elastic force of the locking piece 45 moves the wire into the wire holding surface.
When pressed against 32, the tip of the locking piece portion 45 bites against the electric wire, and the electric wire is retained and locked and electrically connected.

The lamp pin of the fluorescent lamp inserted into the lamp pin insertion hole 23 is inserted while pushing the contact piece portion 44, and the elastic force of the contact piece portion 44 causes the contact piece portion 44 to come into contact with the tip of the lamp pin, and thus the fluorescent lamp. Are held in the axial direction and are electrically connected.

In the lamp socket thus constructed, a pair of support piece portions 42a and 42b are formed, and each support piece portion 42 is formed.
Since the contact piece portion 44 and the locking piece portion 45 are respectively formed from a and 42b, it is possible to prevent the movements of the contact piece portion 44 and the locking piece portion 45 from affecting each other. For example, in a state in which the electric wire inserted in the electric wire insertion hole 17 is clamped by the locking piece portion 45 in a locked state, the lamp pin of the fluorescent lamp is inserted into the lamp pin insertion hole 23 and the contact piece portion 44 is pushed. However, the pushing force is not transmitted to the locking piece portion 45, and it is possible to prevent the locking piece portion 45 from affecting the clamping force of the electric wire.

Moreover, by forming the contact piece portion 44 from the end portion of the support piece portion 42a in the inserting direction, the contact force of the contact piece portion 44 with respect to the lamp pin of the fluorescent lamp can be secured, and the contact force of the contact piece portion 44 can be increased as in the conventional case. Since it is not necessary to provide a bent portion that is bent extremely small for securing, the function of the contact piece portion 44 can be maintained for a long period of time.

Further, when the connection terminal 41 is assembled in the main body case 14, the connecting piece portion 43 is pushed to operate the supporting piece portions 42a, 42a.
Since b can be inserted into the insertion grooves 29a and 29b, the connection terminal 41 can be easily incorporated into the main body case 14 and the assembling property can be improved.

Next, FIG. 4 shows a second embodiment of the present invention.
A lamp socket for a lamp is shown, in which a pair of left and right socket portions 13 are formed with respect to the mounting portion 12 in the socket body 11, and the mounting portion 12 has two wire insertion holes corresponding to each connection terminal 41.
17 are formed so as to be arranged in an inclined shape. Each connection terminal 41 in the socket body 11 is accommodated obliquely across each lamp pin insertion hole 23 and each electric wire insertion hole 17 of each socket portion 13.

Also, in the case of this two-lamp lamp socket, the same operational effect as the one-lamp lamp socket of the above-described embodiment is exhibited.

Moreover, since the connection terminal 41 is formed to be long as a whole, the connecting piece portion 43 can be made long.
It is possible to more reliably prevent the movements of the contact piece portion 44 and the locking piece portion 45 from affecting each other.

[0036]

According to the lamp socket of the present invention, a pair of support pieces that are inserted into a pair of insertion grooves of the socket body are formed, and a contact piece is formed from one support piece while the other support is formed. Since the locking piece is formed from one piece, the movement of the contact piece and the locking piece can be prevented from affecting each other,
Moreover, the contact piece can be formed from the end of the support piece in the insertion direction, so that the contact force of the contact piece with the lamp pin of the fluorescent lamp can be secured, and it is extremely small to secure the contact force as in the past. Since it is not necessary to provide bent bending parts, the function of the contact piece can be maintained for a long period of time, and the supporting piece can be inserted into the insertion groove of the socket body by pushing the connecting piece. Therefore, the connection terminal can be easily incorporated into the socket body, and the assemblability can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a lamp socket showing an embodiment of the present invention.

FIG. 2 is a rear view of the lamp socket of the above embodiment with a cover removed.

3A and 3B show a connection terminal of the above embodiment, FIG. 3A is a side view of the connection terminal, FIG. 3B is a rear view of the connection terminal, and FIG. 3C is a plan view of the connection terminal.

FIG. 4 is a front view of a lamp socket showing another embodiment of the present invention.

FIG. 5 is a cross-sectional view of a lamp socket showing a conventional example.

FIG. 6 is a cross-sectional view of another conventional lamp socket.

[Explanation of symbols]

 11 Socket body 16 Front wall 17 Wire insertion hole 23 Lamp pin insertion hole 29a, 29b Insertion groove 41 Connection terminal 42a, 42b Support piece 43 Connection piece 44 Contact piece 45 Lock piece

Claims (1)

[Claims] 1. A lamp pin insertion hole and an electric wire insertion hole are formed in the front wall portion, and a pair is provided between the lamp pin insertion hole and the electric wire insertion hole on the inner surface of the front wall portion and in the direction in which the lamp pin insertion hole and the electric wire insertion hole are aligned. The socket body having the insertion groove formed therein, the pair of support piece portions inserted into the respective insertion grooves of the socket body, and the end portions of the pair of support piece portions opposite to the insertion direction end portions. The connecting piece to be connected, the contact piece arranged to face the inside of the lamp pin insertion hole from the end of the one support piece in the inserting direction, and the contact piece from the other end of the other supporting piece in the inserting direction. A lamp socket, comprising: a connection terminal having a locking piece portion that is arranged so as to face the inside of the electric wire insertion hole.