JPH097726A - Handheld terminal crimping tool - Google Patents

Abstract

(57) [Abstract] [Purpose] Even though the power source relies on an electric motor, the motor that occupies a large weight ratio is excluded from the frame of the crimping tool and installed at an external desired position. While aiming to reduce weight and improve functionality,
The structure is simplified and maintenance is facilitated. In a hand-held terminal crimping tool A provided with a terminal crimping means in which a moving crimping body 1 linearly reciprocates with respect to a fixed receiving part 2, the moving crimping body 1 comprises a cam 4 fixed to a cam shaft 3. A motor M, which is formed so as to reciprocate linearly by rotation, is independently installed outside the terminal crimping tool A and serves as a drive source of the cam 4, and receives a coupler 5a of a flexible power transmission shaft 5 connected to the motor. A structure in which a joint 6 and a planetary reduction mechanism 8 that reduces the rotational force transmitted to the input shaft 7 of the joint and transmits the reduced rotational force to the cam shaft 3 are provided in the terminal crimping tool.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hand-held terminal crimping tool for crimping and attaching a connecting terminal made of a conductive metal plate to one end of an electric wire.

[0002]

2. Description of the Related Art Generally, in a hand-held terminal crimping tool of this type, an electric wire and a terminal to be connected are placed in a jaw-shaped fixed receiving portion,
A moving crimping body that reciprocates linearly by a motor is crimped and connected. The terminals are arranged at regular intervals on a flexible belt, wound in a loop, and loaded in a crimping tool. Further, a reduction gear for reducing the rotational force of the motor is incorporated in the crimping tool main body together with the motor.

[0003]

However, in such a conventional device, the weight is increased and the size is increased due to the loading of the terminal group, the electric motor and the speed reducer wound in a loop, and the device is hand-held. There is a problem that the operability of the device is significantly impaired.

Therefore, the present invention relies on an electric motor as a power source, but removes the motor occupying a large weight ratio from the frame of the crimping tool and installs the motor at a desired external position. The main object of the present invention is to significantly reduce the weight and improve the functionality of the crimping tool, and to simplify the structure and facilitate maintenance.

[0005]

In order to achieve the above object, the present invention takes the following technical means. That is, in the hand-held crimping tool according to the present invention, in the hand-held crimping tool A provided with the terminal crimping means in which the moving crimping body 1 linearly reciprocates with respect to the fixed receiving portion 2,
Is formed so as to reciprocate linearly by the rotation of a cam 4 fixed to the cam shaft 3, and a motor M, which is a drive source of the cam 4, is independently installed outside the terminal crimping tool A and connected to the motor. A joint 6 that receives the coupler 5a of the flexible power transmission shaft 5 and a planetary reduction mechanism 8 that reduces the rotational force transmitted to the input shaft 7 of the joint 6 and transmits it to the cam shaft 3 are provided on the terminal crimping tool A. The structure is provided.

[0006]

In the hand-held crimping tool constructed as described above, the electric power source is dependent on the electric motor M, but the motor occupying a large weight ratio is excluded from the crimping tool frame and the desired external position. Since the hand-held crimping tool can be significantly reduced in weight and the operability and functionality are significantly improved, the structure is simplified and the assembly and maintenance are facilitated.

[0007]

The details of the present invention will be described below with reference to the accompanying drawings. Reference numeral A is a hand-held crimping tool according to the present invention, which comprises a fixed receiving portion 2 fixed to the frame 9 and a terminal crimping means by a moving crimping body 1 which linearly reciprocates with respect to the fixed receiving portion. The moving crimp body 1 is a plunger 10
It is formed so as to reciprocate linearly by the rotation of the cam 4 which is held at the rear end and is fixed to the cam shaft 3 at its rear end.

The cam shaft 3 is a planetary reduction mechanism 8 incorporated inside a frame forming a substantial grip portion of the crimping tool A.
Is connected to an input shaft 7 of a joint 6 that opens to the lower end surface of the frame, and thereby the rotational force transmitted to the input shaft 7 is decelerated and transmitted to the cam shaft 3.

Further, an electric motor M as a drive source is independently installed outside the terminal crimping tool A, a flexible power transmission shaft 5 is extended from the motor, and a coupler 5a at the tip thereof is the hand-held type. It is formed so that it can be detachably connected to the joint 6 of the crimping tool A.

The terminals 11 made of a conductive metal plate are connected in parallel by a connecting band at regular intervals to form a terminal belt B.
And the terminal belt B is wound around the reel 13 attached to the frame 9.

One end of the terminal belt B taken out from the reel 13 is fed between the fixed receiving portion 2 and the moving crimp body 1 via a guide 14 held by the frame 9. In this case, the terminal feed mechanism C interlocked with the movement of the moving crimp body 1 intermittently feeds the terminals 11 one pitch at a time so that the terminals 11 are correctly arranged at the crimping position.

As shown in detail in FIG. 3, the feed mechanism C is provided with a feed pawl 15 at the front end and a cam floor 18 at the rear end, and is swingably held by the frame 9 via a pivot shaft 16 at an intermediate portion. It includes a swinging arm 17 and a cam disk 19 attached to the upper end of the cam shaft 3. The cam board 19 is provided with an inclined cam surface 19a on its upper surface that returns to its original position by one rotation, and the cam floor 18 of the swing arm 17 is provided with a spring on the inclined cam surface.
It is elastically contacted downward by 20 at all times, so that the swing arm 17 swings up and down once with one rotation of the cam plate. In addition, the feed claw 15 at the tip is the pivot shaft 21 at the middle part.
It is formed so as to be swingable between a position engaging with the terminal 11 (state in FIG. 1) and a avoiding position (state in FIG. 3) with the fulcrum as a fulcrum, and is always forced to the avoiding position by the spring 22. When the swing arm 17 moves downward from the state shown in FIG. 3, the swing arm 17 is engaged with the upper surface of the terminal 11 and pushed downward to the position shown in FIG. This feed claw 15 is a terminal
The moving crimping body 1 retreats to the retracted position shown in FIG. 1 when pushing out 11 downward, and when the feed claw 15 is in the upper avoidance position, the moving crimping body 1 advances to perform the crimping operation. The cam 4 is set as described above.

The terminal 11 sent between the fixed receiving portion 2 and the moving crimp body 1 is inserted into the core wire k of the electric wire K to be connected as shown in FIGS. As shown in FIG. 7, the forward movement of the moving crimp body 1 disconnects the connecting band 12 of the terminal 11 and crimps the terminal. The one-time crimping operation of the terminal and the above-mentioned terminal feeding operation are set to be performed by operating the switch lever 23 provided on the crimping tool A once.

Although the representative embodiment of the present invention has been described above, the present invention is not necessarily limited to the above embodiment. For example, the outer shape of the crimping tool body and the structure of the joint can be changed at any time,
Also, the form of the terminal used is not specified. In addition, it is needless to say that the present invention can be appropriately modified and implemented within a range that has the constituent features and has an effect.

[0015]

As described above, according to the present invention, an electric motor is used as a power source, but a motor having a large weight ratio is excluded from the frame of the crimping tool and installed at a desired external position. As a result, a significant reduction in weight of the hand-held crimping tool can be achieved, operability and functionality are significantly improved, and the structure is simplified to facilitate assembly and maintenance.

[Brief description of drawings]

FIG. 1 is a sectional view of a hand-held crimping tool according to the present invention.

FIG. 2 is a plan view of the crimping tool excluding the reel.

FIG. 3 is an enlarged cross-sectional view of a terminal feeding mechanism portion of the crimping tool.

FIG. 4 is a partial cross-sectional plan view of a main part of the crimping tool.

FIG. 5 is an explanatory view showing a first stage of terminal crimping operation.

FIG. 6 is an explanatory view showing a second stage of the terminal crimping operation.

FIG. 7 is an explanatory diagram showing a third stage of the terminal crimping operation.

[Explanation of symbols]

 1 Moving crimping body 2 Fixed receiving part 3 Cam shaft 4 Cam 5 Power transmission shaft 5a Coupler 6 Joint 7 Input shaft 8 Planetary speed reducer 9 Frame A Hand-held crimping tool B Terminal belt M Motor

Claims (1)

[Claims] 1. A hand-held terminal crimping tool A having a terminal crimping means in which a moving crimping body 1 linearly reciprocates with respect to a fixed receiving part 2, wherein the moving crimping body 1 is a cam fixed to a cam shaft 3. The motor M, which is a driving source of the cam 4, is formed so as to reciprocate linearly by the rotation of the terminal 4.
Of the flexible power transmission shaft 5 connected independently to the motor and the joint 6 for receiving the coupler 5a of the flexible power transmission shaft 5, and the rotational force transmitted to the input shaft 7 of the joint 6 is reduced to the cam shaft 3. A hand-held terminal crimping tool in which the planetary speed reduction mechanism 8 for transmitting is provided in the terminal crimping tool A.