JP2544651Y2 - Terminal connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement in a terminal connection structure for connecting a lead wire such as a communication cable or a jumper wire.

[Conventional technology]

Various types of terminal connection devices for connecting lead wires such as communication cables and jumper wires have been developed so far, and one of them has a connection terminal. A spring is attached to the inside of the housing, a core wire whose coating has been removed is inserted from an insertion hole of a lead wire provided in the housing, and a distal end portion of the spring is used.
There has been known a one-touch type terminal connection device which presses the inserted core wire to press the core wire against the connection terminal.

[Problems to be solved by the invention]

As described above, there is a terminal connection device of a type in which a core wire inserted into a housing is pressed by a resilient force of a spring provided in the housing to press against a connection terminal to establish connection / conduction. Are known.

According to this type of terminal connection device, conduction with the connection terminal can be achieved only by inserting the core wire whose coating has been removed from the insertion hole of the lead wire provided in the housing. It is possible to provide a great advantage that the operation is not required and the workability at the site is improved.

However, according to this conventional terminal connection device, the substantially V-shaped spring in the housing has one end fixed to the housing, and only the other end of the spring serves as a resilient piece. Due to the functioning structure, only a single core wire can be connected, and there is a problem that it is not possible to meet the demand for multi-connection at the site.

Further, when the connection of the lead wire once inserted is to be changed, the pressing force of the spring in the housing must be released. However, according to the conventional terminal connection device, it takes much time and effort to separate the lead wire. There was a problem.

Therefore, the present invention eliminates the disadvantages inherent in the above-described conventional terminal connection device, and presses two resilient pieces of a substantially V-shaped leaf spring main body housed and arranged in the housing main body, respectively, into the lead wires. To function as a spring plate for multi-connection of lead wires, and release springs for each of the two resilient pieces of the plate spring main body to facilitate disconnection, which are connected to each other. It is an object of the present invention to provide a terminal connection structure in which a lead wire in a conductive state can be easily pulled out from the inside of a housing body.

[Means for solving the problem]

The structure of the present invention for achieving the above object will be described in detail.
A leaf spring main body having a U-shape, a housing main body having an upper surface opening formed with a compartment for accommodating the leaf spring main body, and connection terminals attached along both side walls of the compartment of the housing main body, A cap for closing the upper opening of the housing body, and the leaf spring body is placed in the compartment so that the distal ends of the two resilient pieces of the leaf spring body can abut against the connection terminals by spring pressure. A pair of through-holes are provided on the front side of the housing main body so as to be housed and to allow the uncoated core wire to be inserted between the connection terminal and each elastic piece of the leaf spring main body, and the connection terminal A rising portion is formed so as to protrude outwardly at the upper end of the leaf spring, and a release lever is formed at the upper end of each of the two resilient pieces of the leaf spring body so as to face the rising portion. This rising part and release level A terminal connection structure characterized in that a small hole capable of inserting the tip of a tool such as a screwdriver is formed on the cap during the chromatography.

Therefore, according to the present invention, the two resilient pieces of the substantially V-shaped leaf spring main body each function as a spring plate for pressing the core wire to the connection terminal, so that multiple connection is possible. As a result, the connection workability at the site becomes extremely good. Further, according to the present invention, it is not only possible to connect different diameter wires with the conventional terminal connection structure, but also the two resilient pieces are urged outward. Therefore, when the core wire is held down by both elastic pieces, the outward spring pressure is further increased, the connection reliability is improved, and the current capacity of the terminals required for multi connection is automatically increased. It is possible to respond.

Further, a rising portion is formed so as to protrude outward at the upper end of the connection terminal according to the present invention, and between the rising portion and a release lever projecting from the leaf spring body. By inserting the tip of a tool such as a screwdriver through a small hole formed in the cap on the upper surface and pressing the release lever in the opposite direction of the leaf spring body, the cap of the terminal plate is removed from the housing body one by one. Therefore, the wire disconnection operation can be easily performed, and the workability such as wiring replacement becomes extremely good. In addition, even when the connection of lead wires is changed or a lead wire to be connected is added, there is an advantage that has not been provided in the related art such that there is no possibility that the existing wires are affected.

〔Example〕

Hereinafter, a specific configuration of the terminal connection structure of the present invention will be described in detail based on the illustrated embodiment.

FIG. 1 is a partial plan view showing an embodiment of the terminal connection structure of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is an embodiment of the terminal connection structure of the present invention. FIG. 4 is a front view of FIG. 3, and FIG. 5 is a side view of FIG.

In the drawing, reference numeral 1 denotes a substantially V-shaped leaf spring main body composed of two resilient pieces 2, 2, and each resilient piece 2, 2 of the leaf spring main body 1 is directed outward so as to repel each other. It is being rushed. Reference numeral 3 denotes a housing main body made of an insulating material for accommodating the leaf spring main body 1, and a compartment 4 for independently accommodating the leaf spring main body 1 is formed in the housing main body 3.

Reference numeral 5 denotes a connection terminal provided along the left and right side walls of the compartment 4. The connection terminal 5 is a type of connection in which the right and left rising portions are connected at the bottom and the upper surface is open. It has a gutter shape (No. 2
Figure).

When the leaf spring main body 1 is housed in the compartment 4 formed in the housing main body 3, as shown in FIGS. 1 and 2, two elastic members of the leaf spring main body 1 are attached to the connection terminal 5. The tips of the pieces 2, 2 are housed so that they come into contact with each other by spring pressure.

Next, reference numerals 6 and 7 denote a spring restraining shaft and a spring restraining plate disposed in the compartment 4, respectively. The base of the substantially V-shaped leaf spring body 1 is formed by the spring restraining shaft 6 and the spring restraining plate 7. Thus, the same position can be maintained, and they are arranged in the compartment 4 in a stable state.

8 is a lead wire 9 formed on the front side of the housing body 3
The connecting hole 5 is formed along the left and right side walls in the compartment 4 and the resilient pieces of the leaf spring main body 1.
The housing body 3 is formed at a position where the core wire portion 10 of the lead wire 9 with the coating stripped can be press-fitted between the housings 2 and 2. 8 is formed.

Numeral 11 denotes a rising portion protruding from the upper end of the connection terminal 5, 5 so as to expand outward, and numeral 12 denotes an upper end of each of the two resilient pieces 2, 2 of the leaf spring main body 1. FIG. 1 is a diagram showing a release lever used in the case of wire breakage formed in FIG.
Figure).

3 to 5 show an embodiment of a terminal plate using the terminal connection structure of the present invention, in which a large number of compartments 4, 4... And each compartment 4,4
. Are housed independently of each other, and the housing bodies 3 are stacked in a multi-stage manner.

In this embodiment, the terminal leg 13 of the connection terminal 5 is bent at a right angle and hangs below the housing body 3. In the embodiment shown in FIGS. 3 to 5, a cap 14 is attached to the upper surface of the housing body 3, and the release lever 12 projecting from the resilient pieces 2, 2 of the leaf spring body 1 is provided. , 12 are provided in the cap 14 with small holes 15, 15,... For allowing the tips of tools such as a screwdriver to be inserted into the housing body 3.

The terminal connection structure of the present invention has the above-described configuration. Before connecting the lead wire 9, first remove the coating of the tip of the lead wire 9 to expose the core wire portion 10, and then connect the front surface of the housing body 3. The core wire portion 10 is inserted into the housing body 3 through the wire hole 8 formed on the side. Then, core wire part 10
Of the spring piece 2 of the leaf spring main body 1 at an angle, and the lead wire 9 is further pushed against the spring pressure of the spring piece 2 until it reaches the rear wall in the compartment 4. The core wire portion 10 is pressed toward the side wall of the compartment 4 from the distal end portion of the chamber 2, and presses against the connection terminal 5 along the side wall portion to be in a conductive state.

On the other hand, when it is necessary to pull out the lead wire 9 from the inside of the housing body 3 for wiring replacement or the like, the release lever 12 can be pushed inward by the tip of a tool such as a screwdriver. The pressing force of the leaf spring main body 1 can be released, and in this state, if the lead wire 9 is pulled out to the outside, the wire can be easily separated. In addition, as described above, the rising portions 11, 1 are formed on the upper ends of the connection terminals 5, 5 so as to expand outward.
1 protrudes, so that the release lever 1
It can be used as a kind of guide when pressing 2,12, these series of operations through the small hole 15 drilled in the cap 14 as described above to other already installed wire It can be implemented without affecting.

[Effect of the invention]

The terminal connection structure of the present invention has the above-described configuration, and two resilient pieces of the substantially V-shaped leaf spring main body act as spring plates for pressing the core wires to the connection terminals. Therefore, multi-connection is possible even for wires having different diameters, and connection workability at the site becomes extremely good.

Further, according to the present invention, since the two elastic pieces are urged outward, respectively, when the core wire is held down by both elastic pieces, the outward spring pressure further increases,
Therefore, the connection reliability is improved, and it is possible to automatically cope with an increase in the current capacity of the terminal required for the multi-connection.

Further, a rising portion is formed so as to protrude outward at the upper end of the connection terminal according to the present invention, and between the rising portion and a release lever projecting from the leaf spring body. By inserting the tip of a tool such as a screwdriver through a small hole formed in the cap on the upper surface and pressing the release lever in the opposite direction of the leaf spring body, the cap of the terminal plate is removed from the housing body one by one. Therefore, the wire disconnection operation can be easily performed, and the workability such as wiring replacement becomes extremely good. In addition, even when the connection of the lead wires is changed or a lead wire to be connected is added, there is an effect that cannot be obtained with the conventional device, such as there is no possibility of affecting the already mounted wires.

[Brief description of the drawings]

FIG. 1 is a partial plan view showing an embodiment of the terminal connection structure of the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG. 3 is an embodiment of the terminal connection structure of the present invention. FIG. 4 is a front view of FIG. 3, and FIG. 5 is a side view of FIG. 1: Leaf spring body, 2: Elastic piece 3: Housing body, 4: Compartment 5: Connection terminal, 6: Spring holding shaft 7: Spring holding plate, 8: Through hole 9: Lead wire, 10: Core wire Part 11: rising part, 12: release lever

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenji Yamaoka 660 Tsuruma, Machida-shi, Tokyo Inside the Terada Electric Works Machida Office (72) Inventor Koichi Ogata 660 Tsuruma, Machida-shi, Tokyo Terada Electric Works Inside the Machida Office (56) References Japanese Utility Model Showa 60-162374 (JP, U) Japanese Utility Model Showa 55-36566 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A substantially V-shaped leaf spring main body comprising two resilient pieces urged outward, and a housing having an upper surface opening formed with a compartment for accommodating the leaf spring main body. A main body, a connection terminal attached along both side walls of the compartment of the housing main body, and a cap for closing an upper opening of the housing main body, wherein the connection terminal has two springs of a leaf spring main body. The leaf spring main body is housed in the compartment so that the tips of the spring pieces can abut against each other by the spring pressure, and the stripped core wire is inserted between the connection terminal and each spring piece of the leaf spring body. A pair of through-holes is provided on the front side of the housing main body so that it can be attached, and a rising portion is formed so as to protrude outward at an upper end of the connection terminal, and faces the rising portion. Yo leaf spring body 2
A release lever is formed at the upper end of each of the resilient pieces, and a small hole is formed in the cap between the rising portion and the release lever, into which a tip of a tool such as a screwdriver can be inserted. Characteristic terminal connection structure.