JPH0411014Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to the improvement of hand tools such as pliers, nippers, or pliers.

(Prior Art) As is well known, hand-held tools such as pliers, nippers, or pliers consist of a pair of tool pieces, each of which has an integrally formed jaw and a handle, each of which is rotatable relative to the other. It is pivoted and doubles the grip force using leverage to bend or cut electric wires or wires held between the grip and blade, and the handle has an appropriate length to make it easier to apply grip force. It is constructed so that even when the gripper and blade are fully closed, the handles remain open with an appropriate distance between them. Therefore, since it was long and bulky, it was impossible to carry it in a pocket. In addition, the tips of the jaws are hard and sharp, so if you carry it in your pocket or bag, there is a risk that the pocket may tear or the bag itself or other items inside the bag may be damaged. Therefore, they usually have to be stored in a special case or carried in a tool box, making them extremely inconvenient to carry.

(Purpose of the invention) In view of the above, an object of the present invention is to provide a hand-held tool that is so convenient to carry that it can be carried in a pocket.

(Structure of the invention) The structure of the invention according to the above-mentioned purpose includes a pair of tool pieces consisting of a jaw portion forming a gripping portion and a blade portion, a lever formed integrally with the jaw portion, and a U-shaped cross-sectional shape. The tool is provided with a pair of handles having cam grooves running in the longitudinal direction on both the upper and lower surfaces and lacking a sloped portion at the front end corner, and a pair of spindles, so that the tool pieces can be freely rotated relative to each other. The tool piece is pivotally mounted and installed between the upper and lower surfaces of the handle, the support shaft is loosely inserted into the cam groove and the lever, and the tool piece is connected to the handle so that it can be freely entered and removed, and the tool piece is pulled out from the front end of the handle. The gist is that the cam groove is arranged so that the side surface of the lever and the inner side surface of the handle portion abut over a predetermined range and the sloped portions abut each other.

(Function) According to the present invention, when carried, the tool piece can be guided by the cam groove and stored in the handle having a U-shaped cross section, and when in use, it can be pulled out from inside the handle. When in use, the side surface of the lever and the inner side surface of the handle come into contact over a predetermined range, so the tool piece and handle, which are connected by the support shaft, rotate as a unit around the pivot, and the handle rotates as a unit. The tool piece opens and closes as the part opens and closes. At the same time, the slopes formed at the front corners of the handle come into contact with each other, so even when the gripper and the blade are in a closed state, the other end of the handle remains open.

(Example) An example of the present invention will be described below based on the drawings. The figure shows pliers according to the invention. 1, 1' are tool pieces, and each tool piece 1, 1' has a jaw part 2,
2' and levers 3, 3' integrally formed therewith, and a gripping part 4, inside each jaw part 2, 2'.
4' and blade portions 5, 5' are formed. The tool pieces 1 and 1' are pivotally connected to each other by a pivot 6.

On the other hand, 10 and 10' are handle parts, and each handle part 10,
10' is a press-formed sheet metal, and each has a U-shaped cross section as shown in FIG. Also, on both the front and back sides of the handle 10, a cam groove 1 of the same shape runs in the longitudinal direction from one end to approximately the center.
1 and 12, the handle part 10' also has a cam groove 11',
12' is bored. These cam grooves 11, 12
Both ends of the cam grooves 11', 12' are formed in a straight line parallel to the longitudinal direction of the handle, and the center part is formed in a gentle curve.
2', each handle part 10, 1 is line-symmetrical to each other.
0'. Further, a sloped portion 13 is provided at the front corner of the handle 10, and a sloped portion 13 is provided opposite to the sloped portion 13 at the front corner of the handle 10'.
3' is missing. Leaf springs 14 and 14' are spot welded to the inside sides of the handle 10 and handle 10', respectively.

Next, reference numerals 20 and 20' are support shafts, and as shown in detail in FIG. , 22'. The handle portions 1 are arranged with the opening sides of the U-shaped cross sections facing each other.
The tool pieces 1, 1' are installed inside the cam grooves 11, 12 and the lever 3', and the cylinder shaft 22 is loosely inserted into the cam grooves 11, 12 and the lever 3'.
Thereafter, the male screw 21 is screwed to connect the tool piece 1' and the handle 10. Similarly, the tool piece 1 and the handle portion 10' are connected by a support shaft 20'. Since the tool pieces 1, 1' and the handle parts 10, 10' are connected in this way, as the support shafts 20, 20' slide in the cam grooves 11, 12 and the cam grooves 11', 12', the tool pieces 1,1'
enters and exits the handle portions 10, 10'. In this embodiment, the support shaft is composed of the male threads 21, 21' and the cylindrical shafts 22, 22', so if the length dimensions of the cylindrical shafts 22, 22' are matched to the thickness of the handle, the male threads can be When 21, 21' are tightened too tightly, the upper and lower surfaces of the handles 10, 10' are pressed against the tool pieces 1, 1', and the tool pieces 1, 1' cannot slide inside the handles 10, 10'. There is no fear that it will happen.

Further, the cam grooves 11 and 12 have a support shaft 2 at their front end.
When 0 comes, lever 3' is pressed as shown in Figure 3.
The side surface of the handle 10 is in pressure contact with the inner side surface of the handle part 10 over a predetermined length via the leaf spring 14, and the cam grooves 11,'12' also press the lever 3 when the support shaft 20' comes to the front end thereof. The side surface and the inner side surface of the handle portion 10' are in pressure contact with each other via a leaf spring 14', and at this time, the slope portion 13 and the slope portion 13' are arranged so as to abut each other. When the support shaft 20 reaches the rear end, the cam grooves 11 and 12 are arranged so that the corner of the lever 3' comes into pressure contact with the inner side surface of the handle 10 via the leaf spring 14, as shown in FIG. The cam grooves 11' and 12' are similarly arranged.

The present embodiment has the above-described configuration, and how to use it will be described next.

When using pliers, push the support shafts 20, 20' forward with your fingers along the cam grooves 11, 11', and let the tips of the tool pieces 1, 1' slightly protrude from the front ends of the handles 10, 10'. Next, hold the tip of the tool piece with your fingers and pull it out as far as it will go until the support shafts 20, 20' reach the front ends of the cam grooves 12, 12', as shown in FIGS. In this state, as described above, the side surface of the lever 3' comes into pressure contact with the inner side surface of the handle 10, so the tool piece 1' and the handle 10 cannot rotate around the support shaft 20, and are integrally connected. . Also tool piece 1
and the handle portion 10' are integrally connected. Therefore, by opening and closing the handle parts 10, 10', the jaw parts 4, 4' and the blade parts 5, 5' can be opened and closed, and wires, electric wires, etc. can be held there and the gripping force can be applied to bend or cut them. can. Furthermore, when the tool pieces 1, 1' are fully pulled out from the front end of the handle, the slope portions 13 and 13', which are missing at the front end corners of the handles 10, 10', come into contact with each other. The rear end of the portion 10' is kept open at an appropriate distance so that gripping force can be easily applied.

Next, when not using the pliers, grasp the tool pieces 1 and 1' by hand and push them into the handles 10 and 10', and insert the support shafts 20 and 20' into the cam grooves 11 and 12 and the cam grooves 11' and 12', respectively. Slide it along the Support shaft 2
When the levers 3, 20' pass the front end of the linearly formed cam groove and reach the gentle curved part, the levers 3, 3' are no longer on the inside side of the handle parts 10, 10', as shown in FIG. Since there is no pressure contact, the tool pieces 1, 1' enter into the handle portions 10, 10' without much resistance. When the support shafts 20, 20' reach the rear ends of the linearly formed cam grooves, the tool pieces 1, 20', as shown in FIG.
1' is entirely housed within the handle 10, 10'. In this state, the corner of the lever 3' is pressed against the inner side surface of the handle 10 via the leaf spring 14, and the lever 3'
The corner portions of the tool pieces 1, 1' are held in contact with the inner side surfaces of the handles 10', so that the tool pieces 1, 1' are retained in the handles 10, 10' even if the front ends of the handles 10, 10' are tilted downward. Pieces 1, 1' do not come out from the front end.
Further, at this time, the handle portions 10, 10' close tightly together and exhibit a compact form.

In this embodiment, pliers are shown as an example of a hand-held tool, but the present invention may be applied to other tools such as nippers, pliers, or scissors.

(Effects of the invention) When the hand-held tool of this invention is not in use, the tool piece can be stored in the handle and the overall length can be shortened, so it can not only be carried in a pocket, but also
Even if you put it in your pocket or bag, there is no risk of it tearing your pocket or damaging other items in your bag, making it extremely convenient to carry. Also, when using
When the tool piece is pulled out from the front end of the handle, the rear end of the handle opens at an appropriate distance, making it easy to apply grip force to the handle like a conventional hand-held tool, allowing cutting and bending of workpieces. can be easily done.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line A--A in FIG. 1, and FIGS. 3 to 5 are partially cutaway front views of this embodiment. 1, 1'...Tool piece, 2, 2'...Jaw part, 3,
3'... Lever, 4, 4'... Grip part, 5, 5'
...Blade, 10, 10'...Handle, 11, 12,
11', 12'...Cam groove, 13, 13'...Slope portion, 20, 20'...Spin shaft.

Claims (1)

[Scope of utility model registration request] A pair of tool pieces 1, 1' consisting of jaws 2, 2' forming gripping parts 4, 4' and blade parts 5, 5', and levers 3, 3' formed integrally with the jaws 2, 2'. and,
A pair of handle parts having a U-shaped cross-sectional shape, having cam grooves 11, 12, 11'12' running in the longitudinal direction on both upper and lower surfaces, and lacking sloped parts 13, 13' at the front end corners. 10, 10', and a pair of support shafts 20,
20', the tool pieces 1, 1' are rotatably pivoted to each other and installed between the upper and lower surfaces of the handle parts 10, 10', and the support shafts 20, 20' are inserted into the cam groove 11. ，
12, 11', 12' and levers 3, 3' to connect the tool pieces 1, 1' to the handle parts 10, 10' so that the tool pieces 1, 1' can move in and out. When pulled out from the front end of the lever 3, 3', the side surfaces of the levers 3, 3' and the inner side surfaces of the handle portions 10, 10' contact each other over a predetermined range, and the sloped portions 13, 13' contact each other. Cam groove 11, 12, 1
A hand-held tool characterized by having 1' and 12' arranged therein.