JPH11167946A - Connecting terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb the assembling error of a connecting terminal within a housing for making the connection with a mating connecting terminal easy, connect the connecting terminal with the mating connecting terminal by relative ly weak force, make groping work possible, and surely keep a good contact condition even under hard using conditions. SOLUTION: A connecting terminal 1 has a socket 3 for detachably connecting to a connecting pin 22 of a mating electrical appliance at the front end and an end part 2 for connecting to a wiring board at the rear end. A hollow part 5 is formed in the socket 3, into which the connecting pin 22 arranged at the front end of the mating electric appliance is inserted, conductive rubber 10 is inserted into the hollow part 5, and a frame 7 is formed on connecting surface 6 to the connecting pin 22. A circular opening 4 is formed on the connecting surface 6 of the socket 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection terminal used for a vehicle or the like, and more particularly to an improvement of a female terminal which receives a male terminal on a terminal plate side and conducts electric conduction to the terminal plate side.

[0002]

2. Description of the Related Art Conventional female terminals are shown in FIGS. The female terminal shown in FIG.
No. 67, and the cross-coil type instrument shown in FIG. 6 is disclosed in Japanese Patent Application Laid-Open No. 8-180941.

[0005] The female terminal 30 shown in FIG. 5 has an electric wire 31 whose end is peeled, which is connected to a conductor caulking portion 32 and a covering caulking portion 33, and an electric contact portion 34 is provided at the end. The electric contact part 34 is formed in a rectangular cross section, and has a spring part 35 folded inside. The male terminal 36 is connected to the electric wire 31 by a covering caulking portion 37 and a conductor caulking portion 38, and a plate-shaped insertion portion 39 is provided at the end.

A plurality of female terminals 30 are fixed to a wiring board (not shown), and
Are fixed to a terminal plate (not shown), and the terminal plate is joined to the wiring board so that the insertion portion 3 of the male terminal 36 is inserted.
9 is inserted into the electric contact portion 34 of the female terminal 30 to make a conductive connection to the electric component on the terminal plate side.

FIG. 6 shows a mounting structure of an inner unit 41 and a meter case 43 of a cross-coil type instrument used for an automobile speedometer. A wiring board 44 is mounted on the lower surface of the meter case 43, and the inner machine 41 is driven by a drive signal introduced into the inner machine 41 through the wiring board.
In the inner unit 41, a pair of coils 47 and 49 are wound around a bobbin 45, and a magnet 53 fixed to a pointer shaft 51 is rotatably housed inside the bobbin 45.

A pointer 55 is attached to the upper end of the pointer shaft 51, and indicates the scale of the dial 57. Bobbin 4
5 is stored and fixed in a blocking case 59, and a dial 57 is attached to the boss 46 of the bobbin 45 projecting upward from the blocking case.
Has been fixed. Two male pin terminals 61 are respectively provided on the terminal fixing portions 48 protruding downward from the boss portions 46.
Is attached downward.

Further, through holes 63 are formed in the meter case 43 in correspondence with the pin terminals 61, and female socket terminals 65 for conducting with the pin terminals 61 are formed in the respective through holes from the wiring board 44 side. Insertion is fixed. A conductive portion 67 is formed in the wiring portion 44, and the conductive portion is sandwiched between the through hole 63 and the socket terminal 65. The socket terminal 65 has a contact portion 66 protruding toward the conductive portion 67 and a locking claw 68 for preventing the socket terminal 65 from falling out of the through hole 63. The inner machine 41 inserts the pin terminals 61 into the socket terminals 65 on the main body case 43 side to thereby make the
4 is achieved.

[0008]

However, the female and male terminals 30 and 36 shown in FIG. 5 require a large insertion force due to the resistance of the spring portion 35 when inserted, and the female and male terminals 30 and 36 shown in FIG. Since the cross-sectional shape of the terminal is rectangular, it is subject to angle restrictions that the terminal must be aligned in a certain direction at the time of insertion, so that the insertion operation becomes complicated, and there is a problem that groping operation cannot be performed.

Further, the mounting structure of the inner unit of the cross-coil meter and the meter case shown in FIG. 6 has a problem that the insertion work is troublesome because there are a plurality of pin terminals 61 to be inserted, and the work efficiency is extremely poor. Was. Furthermore, the pin terminal 6
1 is electrically connected to the conductive portion 67 of the wiring board 44 via the socket terminal 65, and there is a problem that reliability is lacking because it is not a direct contact.

SUMMARY OF THE INVENTION It is an object of the present invention to facilitate connection between a connection terminal and a counterpart terminal by absorbing an assembly error of the connection terminal in a housing, and to perform connection work between the connection terminal and the counterpart terminal with a relatively small force. It is an object of the present invention to provide a connection terminal which can be carried out, enables groping work, and can maintain a good contact state even under severe use conditions.

[0011]

SUMMARY OF THE INVENTION An object of the present invention is to provide a connection terminal having a socket at a front end detachably connected to a connection pin of a mating electric device, and a rear end having an end connected to a wiring board. In the above, a hollow portion is formed in the socket into which a connection pin provided at the tip of the counterpart electrical device is inserted, and a conductive rubber is inserted into the hollow portion, and a frame is formed on a connection surface with the counterpart connection pin. The problem can be solved by forming the portion.

In the connection terminal having the above-described structure, since the conductive rubber is inserted into the hollow portion formed in the socket, the resistance at the time of insertion of the connection pin is relatively small, so that the connection work is performed with a light force. The conductive rubber can be easily formed, and since the frame portion is formed on the connection surface side of the hollow portion, the detachment of the inserted conductive rubber is prevented.

[0013] Another object of the present invention is to provide a connection terminal having a socket for detachably connecting to a mating connection terminal and a wire connected to a rear end of the socket, the connection pin being provided at the tip of the mating connection terminal. This can be solved by forming a hollow portion in the socket into which the plug is inserted, inserting a conductive rubber into the hollow portion, and forming a frame portion on the connection surface with the mating connection pin. In the connection terminal of the above configuration, since the conductive rubber is inserted into the socket connected to the mating connection terminal, the connection with the mating connection terminal is made by the connection pin of the mating connection terminal into the conductive rubber. Since the resistance force at the time of insertion is smaller than the connection with the spring-type terminal, the connection operation can be easily performed. In addition, since the frame portion is formed on the connection surface side of the hollow portion, detachment of the inserted conductive rubber is prevented.

[0014] The above problem can be solved by providing a circular opening in a connection surface of the socket with a mating connection pin. In the connection terminal having the above configuration, since a circular opening is formed in the connection surface of the socket with the counterpart connection pin, the connection operation can be easily performed since the connection pin can be freely inserted at the time of insertion. .

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a connection terminal according to the present invention will be described in detail with reference to FIGS. FIG. 1 is an exploded perspective view showing the configuration of the connection terminal and the mating connection terminal of the present invention, FIG. 2 is an enlarged perspective view of a main part in FIG. 1, and FIG.
FIG. 4 is an exploded perspective view showing the configuration of a connection terminal and a mating connection terminal according to another embodiment of the present invention.

As shown in FIGS. 1 to 3, the connection terminal 1 of the present embodiment is provided with a socket 3 having two openings of a cylindrical hollow portion at the front end, and having a connection function at the rear end. An end 2 is provided. This socket 3 has a wiring board 1
Two are provided for the mounting substrate 11 provided with the wiring 2, and the end 2 provided at the rear end thereof is bent, connected to the wiring board 12 on the back surface, and fixed to the substrate 11. Socket 3
A connection surface 6 is formed on the front surface, and a frame portion 7 having a circular opening 4 is formed on the connection surface. Further, two cylindrical hollow portions 5 are provided inside the socket 3, and a conductive rubber 10 is inserted into the cylindrical hollow portions 5. The conductive rubber is, for example, a resilient solid containing a metal powder having a conductivity (for example, silver powder) in the rubber based on a rubber having a composition such as silicon.

Also, an electric device 2 connected to the connection terminal 1
Reference numeral 1 denotes a connection pin 22 having a circular tip with a thin and sharp tip.
The base 23 which is provided and supports the connection pin is provided integrally with the electric device 21. The electric device 21 has a bobbin around which a pair of coils are wound, and a magnet fixed to the pointer shaft 24 is rotatably held inside the bobbin. A pointer is attached to the tip of the pointer shaft, and the pointer rotates with the rotation angle of the magnet due to the difference in magnetic flux generated in the pair of coils, and indicates a scale on the dial.

Next, the operation of the connection terminal of the present embodiment will be described. When the connection pin 22 of the counterpart electric device 21 is inserted into each of the plurality of circular openings 4 formed in the connection surface 6 on the front surface of the socket 3, the connection pin has elasticity in the socket 3. It is inserted into the conductive rubber 10. Since the conductive rubber contains an electrically conductive metal powder, the mating connection pin 2
By inserting 2, connection terminal 1 and partner electric device 21 are electrically connected to each other.

As described above, the connection terminal 1 of the present embodiment
Is a connection terminal having a socket 3 at the front end detachably connected to the connection pin 22 of the counterpart electric device 21 and an end portion 2 connected to the wiring board 12 at the rear end. The hollow portion 5 is formed in the socket 3 into which the connection pin 22 provided in the socket 3 is inserted, and the conductive rubber 10 is inserted into the hollow portion, and the frame portion 7 is formed on the connection surface 6 with the mating connection pin 22. Have been. Therefore, connection terminal 1
Since the conductive rubber 10 is inserted into the socket 3, the connection operation of the mating connection terminal 25 into the socket 3 can be performed with a weak insertion force, and the connection surface 6 of the hollow portion 5 can be connected.
Since the frame 7 is formed on the side, the detachment of the conductive rubber 10 is prevented, so that it can be used for a long period of time under severe conditions of severe vibration, and the connection with the counterpart electric device 21 is reliably performed. .

As described above, the connection terminal 1 of the present embodiment has the circular opening 4 in the connection surface 6 of the socket 3 with the mating connection pin 22. Therefore, while a conventional cross-section having a rectangular cross-sectional shape specifies the method of connection, the circular opening of the opening facilitates connection with the mating connection terminal.

Next, a connection terminal 1A according to another embodiment as shown in FIG. 4 is provided with a cylindrical socket 3 at the front end, and a covering caulking portion fixed to the end of the electric wire 13 at the rear end. 14
And a conductor caulking portion 15. Socket 3 is
A circular opening 4 having a frame portion 7A is formed in the connection surface 6 on the front surface, and a tapered portion 16 connected to the conductor caulking portion 15 at the rear.
Are formed, and a conductive rubber 10 is inserted into the cylindrical hollow portion 5 inside.

At the tip of the mating connection terminal 25 connected to the connection terminal 1A, a connection pin 27 having a thin and sharp circular cross section is provided, and at the rear of the base 26 of the connection pin, a conductor terminal for fixing the electric wire 13 is provided. A fastening portion 15 and a cover caulking portion 14 are provided.

Next, the operation of the connection terminal according to the present embodiment will be described. When the connection pin 27 provided on the front surface of the mating connection terminal 25 is inserted into the circular opening 4 formed on the connection surface on the front surface of the socket 3, the connection pin becomes conductive in the socket 3. It is inserted into the rubber 10. Since the conductive rubber contains a conductive metal powder, when the connection pin 27 of the mating connection terminal 25 is inserted into the conductive rubber 10, the connection terminal 1 and the mating connection terminal 25 are electrically connected. Connected as possible.

As described above, the connection terminal 1 of the present embodiment
A is such that the hollow portion 5 is formed in the socket 3 into which the connection pin 27 provided at the tip of the mating connection terminal 25 is inserted, and the conductive rubber 10 is inserted into the hollow portion. A frame portion 7A is formed on the connection surface 6. Therefore, since the conductive rubber 10 is inserted into the socket 3 of the connection terminal 1A, the mating connection terminal 2
5 has a lower resistance force when the connection pin 27 is inserted than the spring-type connection terminal, the connection operation can be easily performed with a weak insertion force, and the solid conductive rubber 10 Is inserted, so that the conductive rubber does not leak out, so that the structure of the socket and the mating terminal can be simplified. Further, since the frame portion 7A is formed on the connection surface 6 side of the hollow portion 5, detachment of the conductive rubber 10 is prevented, enabling long-term use under severe conditions of severe vibration and enabling connection of the mating connection terminal. 25 is reliably established.

As described above, the connection terminal 1A of the present embodiment is provided with the circular opening 4 in the connection surface 6 of the socket 3 with the mating connection pin 27. Therefore, while a conventional rectangular cross-section has a specified method of connection, the circular shape of the opening facilitates connection with the mating connection terminal.

[0026]

As described above, according to the connection terminal of the present invention, a hollow portion is formed in a socket into which a connection pin provided at the tip of a mating electric device is inserted, and a conductive rubber is formed in the hollow portion. Is inserted, and a frame portion is formed on the connection surface with the mating connection pin. Therefore, since the conductive rubber is inserted into the socket of the connection terminal, the connection work of the connection pin of the mating electric device into the socket can be performed with a weak insertion force, and the frame portion is formed on the connection surface side of the hollow portion. Since the conductive rubber is formed, detachment of the conductive rubber is prevented, so that the conductive rubber can be used for a long period of time under severe conditions of severe vibration, and the connection with the mating connection terminal can be reliably performed. Therefore, a more reliable connection terminal can be obtained.

In the connection terminal of the present invention, a hollow portion is formed in a socket into which a connection pin provided at the tip of the mating connection terminal is inserted, and a conductive rubber is inserted into the hollow portion. A frame portion is formed on the connection surface with the pin. Therefore, since the conductive rubber is inserted into the socket, the resistance at the time of inserting the connection pin of the mating connection terminal can be smaller than the connection of the spring type terminal, so that the connection operation can be easily performed. Thus, the working efficiency can be improved. In addition, since the frame is formed on the connection surface side of the hollow part, detachment of the conductive rubber is prevented, and the connection with the mating connection terminal is reliably performed even under severe conditions with severe vibration, so that more reliable A highly reliable connection terminal can be obtained.

In the connection terminal of the present invention, since a circular opening is provided on the connection surface of the socket with the mating connection pin, the connection terminal is more difficult to insert the connection pin than the conventional connection of the rectangular terminal. The joining method is free, and the work efficiency of the connection work of the connection terminals can be improved.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a connection terminal of the present invention.

FIG. 2 is an enlarged perspective view of a main part in FIG.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is an exploded perspective view showing another embodiment of the connection terminal of the present invention.

FIG. 5 is a perspective view of a conventional female terminal provided with a spring portion.

FIG. 6 is a side view showing a partial cross section of a conventional device having a plurality of connection terminals.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1A Connection terminal 2 End part 3 Socket 4 Circular opening 5 Cylindrical hollow part 6 Connection surface 7, 7A Frame part 10 Conductive rubber 12 Wiring board 13 Electric wire 21 Mating electrical equipment 22, 27 Connection pin 25 Mating side Connecting terminal

Claims (3)

[Claims] 1. A connection terminal having a socket at the front end detachably connected to a connection pin of a mating electric device and an end portion connected to a wiring board at a rear end, provided at a front end of the mating electric device. A hollow portion is formed in the socket into which the connection pin is inserted, a conductive rubber is inserted into the hollow portion, and a frame portion is formed on a connection surface with the mating connection pin. Connecting terminal. 2. A connection terminal having a socket at the front end detachably connected to a mating connection terminal and a wire connected to a rear end, wherein a connection pin provided at a front end of the mating connection terminal is inserted. A connection terminal, wherein a hollow portion is formed in the socket, a conductive rubber is inserted into the hollow portion, and a frame portion is formed on a connection surface with the connection pin. 3. The socket according to claim 1, wherein a circular opening is provided in the connection surface of the socket.
Connection terminal described.