JPS6327978Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a work tool such as a crimping tool or a cable cutter used for crimping, cutting, etc. Crimp in combination with rotating beak,
It constitutes a working section that performs work such as cutting, and
Crimp configured to interlock the rotating beak with a swinging operating rod via a ratchet mechanism, so that the swinging of the swinging operating rod causes the rotating beak to rotate toward the fixed beak;
It relates to work tools used for cutting, etc.

This invention provides strong crimping force, cutting force, etc.
The purpose of the present invention is to provide a working tool that has a simple structure and is easy to handle, and one end of the drive side member is pin-coupled to the vicinity of the pivot point of the swing operating rod that is swingably supported on the base plate. , a proximal end of the driven member is pivotally connected to the base plate, and a distal end thereof is pin-coupled to the other end of the driving member, and a feeding pawl of the ratchet mechanism is provided on the proximal end side of the driven member; The present invention is characterized in that a working tool used for the crimping, cutting, etc. is configured.

The embodiments shown in FIGS. 1 to 3 relate to a crimping tool used for crimping bare terminals, sleeves, and the like.

A fixed operating rod 2 is fixed to a base plate 1 consisting of a pair of cover plates 1a, 1a, and a swinging operating rod 3 is swingably supported using a pivot 4. Also board 1
A fixed beak (fixed die) 5 is integrally formed on the holder. Furthermore, a rotating beak (rotating die) 7 having a fan-shaped portion 6 is rotatably supported on the substrate 1 using a pivot 8. Concave portions 9, 9, 9 and convex portions 10, 10, 10 of three different sizes are provided on opposing portions of the fixed die 5 and rotating die 7, respectively, so that the sleeve or the like can be compressed and deformed into a predetermined shape. ing. As described above, the fixed die 5 and the rotating die 7 are combined to form the working section 11 that performs the crimping operation. The rotating die 7 is a tension spring 1
2, it is urged in the direction P to move away from the fixed die 5.

13 is a link mechanism consisting of a pair of members 14 and 15 that swing in conjunction with the swing operating rod 3.
One end of the driving member 14 of the link mechanism 13 is connected to the protruding end 16 of the swing operating rod 3 near the pivot 4 using a pin 17, and the other end is connected to the tip of the driven member 15 with a pin 18. They are pin-coupled using . The driven member 15 of the link mechanism 13 is pivotally supported on the base plate 1 using a pivot shaft 19 at its base end. This pivot 19 is connected to an arc-shaped hole 2 provided in the fan-shaped portion 6 of the rotary die 7.
It is placed at a position that passes through 0.

A ratchet tooth 21 is formed on the periphery of the fan-shaped portion 6, and a feed pawl 22 is pivotally supported on the ratchet tooth 21 at the proximal end portion of the driven member 15.
A ratchet mechanism 24 is constructed by engaging the non-return claws 23 pivotally supported on the base plate 1, respectively. 2
5 is a tension spring that urges the feed claw 22; 26;
27 is a tension spring that urges the check pawl 23, and a stopper 27 that restricts the rotation of the check pawl 23 in the N direction at a predetermined position.

Reference numeral 28 denotes a guide pin fixed to the base plate 1, and as shown in FIG. While pressing down the cam portion 29, the tip portion 30 of the feed pawl 22
It has the effect of causing the teeth to float above the ratchet teeth 21 and disengaging the two from each other.

Next, the operation of the power tool having the above structure will be explained. With the rotating die 7 open to the fixed die 5,
When a member to be pressed such as a sleeve is disposed between both dies 5 and 7, and then the swinging operation rod 3 is swung in the LR direction, the swiveling die 7 moves in the Q direction. That is, when the swing operating rod 3 is rotated in the R direction, the link mechanism 13 is also interlocked, and its driven member 15 is rotated in the Q' direction. At this time,
The swinging force of the swinging operation rod 3 is amplified and transmitted to the driving side member 14 by the rotational moment around the pivot shaft 4, and acts on the tip of the driven side member 15. Accordingly, the driven member 15 rotates about the pivot 19. As a result, the feed pawl 22 pivotally supported by the driven member 15 is disengaged from the guide pin 28 and meshes with the ratchet teeth 21, and the rotational force of the driven member 15 in the Q' direction is directly applied to the rotating die 5. tell. At this time, the feed claw 22
is provided on the pivot shaft 19 side of the driven member 15, the swinging force is further amplified by the rotational moment about the pivot shaft 19 and transmitted to the feed pawl 22. As a result, rotating die 7
rotates in the Q direction about the pivot 8 by the amount of rotation of the driven member 15, thereby narrowing the interval between the working parts 11. In addition, since the swing operating rod 3 having different rotation centers and the driven member 15 whose rotation center is about the pivot shaft 19 are connected by the driving member 14, the force can be smoothly transmitted between them. It can be carried out. On the other hand, when the swing operating rod 3 is rotated in the L direction,
The driven member 15 and, in turn, the feed pawl 22
The rotation of the rotating die 7 in the same direction is prevented by the check pawl 23, and the feed pawl 22 slides on the ratchet teeth 21. The rotation is not transmitted to the rotating die 7. By moving the rotary die 7 in increments and narrowing the interval between the working portions 11 through the above operations, the member to be crimped held between the recess 9 and the convex portion 10 can be crimped. At this time, the tension spring 12, whose one end is fixed to the rotating die 7, is stretched to the maximum extent and urges the rotating die 7 in the P direction. Rotation in the P direction is prevented.

Next, in order to return the rotary die 7 to its original state and rotate it, it is sufficient to disengage the check pawl 23 and the feed pawl 22 from the ratchet teeth 21. That is, when the swing operating rod 3 is first rotated in the L direction and set as shown in FIG. 2, the feed pawl 22 and The meshing with the ratchet teeth 21 is released. Next, when the check pawl 23 is rotated in the M direction, the mesh between the check pawl 23 and the ratchet teeth 21 is released, and the rotating die 7 is momentarily moved by the restoring elastic force of the tension spring 12. It will return to its original position within a few seconds.

The present invention can be configured in various ways other than those shown in the above embodiments. For example, as shown by the imaginary line in FIG. 1, a compression spring 32 is interposed between the fixed operating rod 2 and the swinging operating lever 3, and the swinging operating lever 3 is automatically rotated in the L direction. It can be configured as follows.

Further, as in the embodiment shown in FIGS. 4 and 5, the rotary die 7 may be rotated in increments when the swing operating rod 3 is rotated in the L direction. In this embodiment, this rotation in the L direction is caused by the compression spring 32
This can be done automatically due to its resilience. Since this embodiment has the same basic configuration as the previous embodiment, detailed explanation will be omitted. In addition, in the drawings, common components are indicated by common symbols to clarify the relationship between the two embodiments. In this embodiment, in order to return the rotary die 7 to its original position, the swing operating rod 3 is set as shown in FIG. 4, and the non-return claw 2 is set.
3 in the M' direction.

In the above embodiment, the present invention is applied to a crimping tool, but the present invention can be applied to other work tools used for crimping, cutting, etc., such as an outer cable cutter.

According to the present invention, the rotational force exerted by the feed pawl on the ratchet teeth of the ratchet mechanism can be increased in two stages: the swing operating rod and the driven member, so strong crimping and cutting forces can be applied to the work. can be given to the department. In addition, since force can be smoothly transmitted between the swinging operating rod and the driven member via the driving member, the swinging operating lever can be easily operated. Furthermore, since the operating mechanism can be constructed by connecting the swinging operating rod and the rotating beak with a pair of members, a compact working tool with a simple structure and easy handling is provided. be able to.

[Brief explanation of drawings]

Figure 1 is a front view showing an embodiment of the present invention, Figures 2 and 3 are front views with the front cover plate removed to explain its function, and Figures 4 and 5 are front views of the invention. FIG. 7 is a front view of another embodiment with the front cover plate removed. DESCRIPTION OF SYMBOLS 1... Board, 3... Swinging operation rod, 4... Pivotal point, 5... Fixed beak, 7... Rotating beak, 11... Working part, 14... Drive side member, 15... Followed side member , 17...pin, 18...pin, 19...
Pivot, 22... feed pawl, 24... ratchet mechanism.

Claims (1)

[Scope of utility model registration request] A fixed beak integrally provided on the board and a rotating beak pivotally supported on the board constitute a working unit that performs operations such as crimping and cutting, and the rotating beak is oscillated via a ratchet mechanism. In a work tool used for crimping, cutting, etc., which is linked to a rod and is configured to rotate a rotating beak toward a fixed beak by the swinging of the swinging operating rod, the tool is pivotably supported on the base plate. One end of the driving side member is pin-coupled near the pivot point of the swinging operation lever, while the base end of the driven side member is pivotally connected to the base plate, and its tip is pin-coupled to the other end of the driving side member. A power tool used for crimping, cutting, etc., characterized in that the feed pawl of the ratchet mechanism is provided on the proximal end side of the driven member.