JPH0536788U - Crimping device for waterproof crimp terminals - Google Patents

Abstract

(57) [Abstract] [Purpose] A waterproof crimp terminal can be used by one crimping operation.
A device that can simultaneously crimp two wires. [Structure] Upper and lower pressure bodies that pressurize and deform the terminal (T), and an operating lever that opens and closes these terminals via a pivot pin (3), and the upper pressure body (1) has terminals The left and right terminal pressing parts (1a) corresponding to the length of the metal sleeve (S) and the terminal outer diameter (D)
A pair of pressing male bodies (6a), (6b) having a front-rear width corresponding to is formed, and the lower pressurizing body (2) is provided with the left and right end portions of the terminal receiving portion (2a) having the left-right width. Male stoppers (7a), (7b) are vertically arranged continuously from facing positions and are arranged side by side in the front-rear direction at intervals with which the male bodies can be fitted. [Effect] Improving the insulation of the waterproof terminal connection and streamlining the crimping work.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention proposes a water-proof crimp terminal, that is, a contact failure due to intrusion of moisture or dust into the terminals of the two covered electric wires, which are obtained by peeling and removing the coating from each end of the covered electric wires, shorts, and electric leakage. In order to prevent the occurrence of accidents such as electric shock, it is used to make a crimp connection in a conductive state by using a cylindrical terminal in which the surface of the crimp terminal and the electric wire coating in the vicinity thereof are covered with a waterproof resin film. The present invention relates to a terminal crimping device.

[0002]

[Prior Art]

 Generally, as a terminal crimping connection means, a cylindrical terminal is placed between a pair of pressurizing bodies that move up and down by opening and closing a pair of operating levers, and a bare wire end is placed on this terminal. This is done by inserting a part and pinching it with the pressurizing body. However, in all of the conventional terminal crimping means, one crimping operation requires one cover at one end of the crimping terminal. Since only the electric wire can be crimped and connected, when crimping and connecting the bare ends of the covered electric wire to both ends of the crimping terminal in a conductive state, the crimping operation is performed twice.

[0003]

[Problems to be solved by the device]

 In this way, the work efficiency decreases due to the doubling of the crimping operation, and when the crimping operation is repeated at a close position on the terminal, the second crimping operation causes distortion or distortion in the already crimped first connection part. Since deformation occurs, there is a risk that the clamping force of the connecting portion will be reduced and heat will be generated, or the connecting portion will come off and become unable to conduct electricity. In addition, waterproof crimp terminals have been widely used recently because the heat-shrinkable resin that covers the terminals shrinks and adheres to the peripheral surface of the wire coating part by heating after crimping to obtain a perfect seal. However, in this case, there is a problem in that the strain as described above damages the sealing resin film and deteriorates the waterproof property, and in the worst case, the insulation is broken and causes a leakage or a short circuit. there were.

Therefore, in order to solve such a conventional problem, the present invention requires a single connection even when the bare ends of the covered wires are connected to both ends of the crimp terminal in a conductive state. A crimping device for waterproof crimping terminals that is capable of obtaining a crimping connection part that is accurate and has good electrical insulation without the occurrence of distortion that deteriorates the sealing property. It is the one we are trying to provide.

[0005]

[Means for Solving the Problems]

 The structure of the present invention for achieving the object will be described with reference to FIGS. 1 to 6 corresponding to the embodiments. A crimping device for waterproof crimp terminals according to the present invention is a bare end portion of a covered wire (K). The waterproof crimp terminal (T) connected to (k) has a pair of upper and lower pressurizing bodies (1), (2) at one end for deforming under pressure. The pressurizing bodies (1), (2 ) Is a terminal crimping device having a pair of operation levers (4), (5) on the other end side that relatively open and close via a pivot pin (3), and the upper pressurizing body (1) is The terminal pressing part (1a) having a left-right width (W) corresponding to the length of the metal sleeve (S) inside the crimp terminal (T) and the left and right ends of the terminal pressing part are vertically connected downward from the positions facing each other. The pressurizing male bodies (6a), (6b) having a front-rear width substantially equal to the outer diameter (D) of the press-fitting terminal (T) are formed, and the lower pressurizing body (2) is The left and right ends of the terminal receiving part (2a) having a left-right width (W) corresponding to the length of the metal sleeve. The male stoppers (7a) and (7b) vertically arranged continuously from the position facing each other have a space slightly larger than the outer diameter (D), and within the space, the pressurizing male body is pressed. The bodies (6a) and (6b) are arranged side by side in the front-rear direction so that they can be fitted therein.

[0006]

[Action]

 Since the present invention has such a structure, in order to simultaneously connect the bare wire ends to the left and right ends of the waterproof crimp terminal (T), as shown in FIG. Place it on the terminal receiving part (2a) within the space, and at both ends of it, the bare ends (k) and (k) of the wires (K) and (K), respectively, on the end surface of the metal sleeve (S). Insert it until it touches and clamp the operation levers (4), (5). As a result, a pair of left and right male bodies (6a), (6b) of the upper pressurizing body (1) are paired with the lower pressurizing body by the two pairs of male stoppers (7a), The metal sleeve (S) of the terminal (T) which is fitted between (7b) and (7a), (7b) respectively and located on the terminal receiving part (2a) is crimped at two points as shown in FIG. Be transformed. Therefore, the two wires on the left and right should be removed at the same time at one place of each bare end (k) by the parts pressed down by the male bodies (6a), (6b) and the other raised parts. It is securely crimped in a state where it is prevented from coming off.

Therefore, according to the present invention, the two right and left electric wires (K), (K) can be connected to the terminal (T) simultaneously and accurately, so that the heat-shrinkable resin coating the terminal (T) When the tube (R) is heated and shrunk, it can be sealed in a state where it is in contact with the left and right electric wire covering parts over the metal sleeve (S) of the crimp terminal (T) as shown in FIG. Therefore, it is possible to realize a crimp connection portion having good electric insulation at once.

[0008]

【Example】

 1 to 6 show a first embodiment, and FIG. 1 is a side view showing the whole thereof.

The waterproof crimp terminal (T) used in this embodiment has an hourglass shape in a side view as shown in FIG. 4, and the outer diameter (D) of the terminal means the heat-shrinkable resin tube (R). It is the outer diameter of the central part. The brass sleeve (S) is tightly fitted inside, and both side parts connected to the central part are connected to the end surface of the sleeve (S) via a tapered part formed outward, Also has a large inner diameter. The tapered portion is for smoothly and easily inserting the bare wire end (k) into the sleeve (S).

As shown in FIG. 1, the structure of the main body of the terminal crimping device has a pair of upper and lower pressurizing bodies (1) and (2) which pressurize and deform the metal sleeve (S) at one end. Then, there is a conventionally known one having a pair of operating levers (4) and (5) on the other end side for opening and closing the same via the pivot pin (3).

As shown in FIGS. 1 and 2, the pair of upper and lower pressurizing bodies (1) and (2) according to the present embodiment is such that blocks having a shape similar to “Great Wall” are mutually connected. It is attached with screws (20) in a position facing the mating position. In more detail with reference to FIGS. 1 to 4, the upper pressurizing body (1) has a left and right width (W) slightly smaller than the length of the brass sleeve (S) and has a flat lower surface for pressing the terminal (1a). ), And vertically connected from three points on both the left and right end sides facing each other vertically, the front-back width is approximately equal to the terminal outer diameter (D), that is, the male stoppers (7a), (7a) below. The structure consists of three pairs of rectangular male bodies (6a), (6b) having a front-back width slightly smaller than the distance between the end faces of (7b) and (7b).

In addition, the lower pressurizing body (2) is vertically connected continuously from four positions facing each other at both left and right ends of the terminal receiving portion (2a) having the above-mentioned left-right width (W) and having a flat upper surface. 4 pairs of male stoppers (7a), (7b) are arranged in a row in the front-rear direction with a space slightly larger than the front-rear width of the male bodies (6a), (6b) being provided between the end faces. It is a thing.

In order to simultaneously connect the bare ends (k) of the two wires (K) to both ends of the crimp terminal (T) using this waterproof terminal crimping device, it has already been described in the section “Operation”. As described above, first mount the waterproof type terminal (T) on the terminal receiving part (2a) as shown in Fig. 4, and insert the bare end (k) of the wire (K) into each end of the terminal (T). , If the pressure bodies (1) and (2) are closed by gripping the operation levers (4) and (5), the terminals (T) will be crimped and deformed at the same time as shown in FIG. The right and left electric wires (K) can be energized and connected all at once via the terminals (T) by operating.

FIG. 7 shows a second embodiment of the present invention. The first embodiment is a manual type in which the upper and lower pressurizing bodies (1) and (2) are closed by the operating levers (4) and (5). This is to further improve efficiency. The outline of the mechanism is as shown in FIG. 7, and the lower pressurizing body (2) and the upper pressurizing body (1) that opens and closes via the pivot pin (3) contact the terminal (T). This is the same as the first embodiment except that the portions, that is, the tip surfaces of the pressing male bodies (6a), (6b) and the terminal receiving portion (2a) are curved concave surfaces. In this embodiment, a pair of pressing male bodies (6a) and (6b) and two pairs of male stoppers (7a) and (7b) are formed. By forming such a curved concave surface, it is possible to accurately process a wide variety of terminals (T) having different outer diameters (D) with one set of male and female bodies. The upper pressurizing body (1) is provided with a first connecting pin (8) at a position above the pressurizing male bodies (6a), (6b) and farthest from the pivot support pin (3). And the other end of the first connecting rod (9) whose one end is pivotally supported by the pin is pivotally supported by the second connecting pin (11) provided at one end of the second connecting rod (10). The other end of the two connecting rod (10) is pivotally supported by a fulcrum (12) fixed to the main body. The second connecting rod (10) is inserted into an elongated hole (13) formed along the length direction of the second connecting rod (10) and is slidable inside the elongated pin (14) through a pneumatic pin (16). ) Is connected to the shaft (15).

Therefore, when the air on-off valve (not shown) is opened by operating the foot pedal, the pneumatic cylinder (16) is activated, and the shaft (15) moves leftward in the arrow (X). ), The second connecting pin (11) provided at one end of the second connecting rod (10) moves to the left of the arrow (Y) and is connected to the second connecting rod (10). Similarly, the first connecting pin (8) of the first connecting rod (9) also moves to the left, and finally the pair of pressing male bodies (6a), (6b) of the upper pressing body (1) are marked with arrows. (Z) It is displaced downward and fitted between the two pairs of male stoppers (7a), (7b) of the lower pressurizing body (2), and both are completely closed. After crimping, if you remove your foot from the pedal, each part will operate in the opposite direction and you can take out the wire crimped to the terminal.

Although the embodiments considered to be typical of the present invention have been described above, the present invention is not necessarily limited to the structures of these embodiments, and has the above-mentioned constitutional requirements of the present invention, and The present invention can be carried out with appropriate modifications within the scope of achieving the object of the present invention and having the following effects.

For example, in the first embodiment, one pair of left and right pressing male bodies (6a), (6b) are provided, and two bare wire ends of one wire are crimped and deformed. It is also possible to increase the crimping strength and energization area, and the drive source in the second embodiment may be an electric type instead of a pneumatic type.

[0018]

[Effect of the device]

 As is apparent from the above description, in the device of the present invention, the connection of electricity to the two right and left electric wires through the waterproof crimp terminals (T) is controlled by one closing operation of the upper and lower pressurizers. Since it is a structure that can be accurately and quickly performed, there is no damage to the heat-shrinkable resin film due to heat generation due to crimping distortion with a sharp shape or defective crimping, and contamination by foreign matter such as moisture or dust. It is possible to provide a wire connection structure that has an extremely good sealability without the risk of electric leakage or electric shock due to contact with other objects or other objects, and can be used safely for a long period of time.

Further, according to the present invention, the number of closing operations can be reduced to one, which was conventionally required to be twice, so that it is possible to expect an effect that work efficiency can be significantly improved. It is a thing.

[Brief description of drawings]

FIG. 1 is an overall side view showing a first embodiment of the present invention.

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

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a cross-sectional view showing a state before pressure bonding, corresponding to FIG.

FIG. 5 is a cross-sectional view showing a state during pressure bonding, corresponding to FIG.

FIG. 6 is a cross-sectional view showing a state after heat shrinkage of a resin cylinder, corresponding to FIG. 3;

FIG. 7 is a side view of an essential part showing a second embodiment of the present invention.

[Explanation of symbols]

 (1) Upper pressing body (1a) Terminal pressing part (2) Lower pressing body (2a) Terminal receiving part (3) Pivot pin (4) Operating lever (5) Operating lever (6a) Pressurizing male body ( 6b) Male body for pressurization (7a) Male stopper (7b) Male stopper (T) Crimp terminal (K) Coated wire (k) Bare end of coated wire (R) Heat-shrinkable resin tube (S) Metal sleeve (D) Outer diameter of crimp terminal (W) Width of terminal pressing part

Claims (1)

[Scope of utility model registration request] 1. A pair of upper and lower pressure bodies (1) for compressing and deforming a waterproof crimp terminal (T) connected to a bare end (k) of a covered electric wire (K),
(2) at one end, and a pair of operating levers (4), (5) for relatively opening and closing the pressure bodies (1), (2) via a pivot pin (3) on the other end side In the terminal crimping device having, the upper pressure body (1),
The terminal pressing part (1a) having a left-right width (W) corresponding to the length of the metal sleeve (S) inside the crimp terminal (T), and the left and right ends of the terminal pressing part (1a) are vertically connected downward from the positions facing each other. The pressing male body (6a), (6b) having a front-back width substantially equal to the outer diameter (D) of the crimp terminal (T) is formed, and the lower pressing body (2) is formed.
Is the width (W) corresponding to the length of the metal sleeve (S).
The male stoppers (7) vertically connected continuously from the opposite positions of the left and right ends of the terminal receiving portion (2a) having
a), (7b), with a space slightly larger than the outer diameter (D),
A crimping device for a waterproof crimping terminal, characterized in that the male pressure-applying bodies (6a), (6b) are arranged side by side in the front-rear direction so that they can be fitted into the spaces.