KR970008479B1 - Hand-operated cable cutter - Google Patents

Abstract

none.

Description

Manual cable cutter

1 is a front view illustrating one embodiment of a manual cable cutter according to the present invention;

2 is a rear view illustrating the embodiment;

3 is a left side view illustrating the embodiment;

4 is an enlarged cross sectional view illustrating the main part of the embodiment with the ratchet lever and the gear detent held in their respective engaged states,

5 is an enlarged cross sectional view illustrating the main part of the above embodiment with the ratchet lever and the gear detent in their respective neutral states,

6A is an enlarged explanatory view illustrating another example of the shape of the inner cutting edges of the fixed and rotating blades;

6B is an enlarged explanatory diagram illustrating a cable being cut by the inner cutting blades of FIG. 6A,

7 is a front view illustrating a second embodiment of a manual cable cutter according to the present invention;

FIG. 8 is an enlarged cross sectional view illustrating the main part of the second embodiment with the ratchet lever held in one engagement and the gear detent in engagement;

9 is an enlarged cross sectional view of the main part of the second embodiment with the ratchet lever held in a different engagement state and the gear detent in a neutral state.

* Explanation of symbols for main parts of the drawings

1: fixed handle 2: movable handle

3: fixed blade 3a: base

4: rotating blade 4a: outer tooth

5,6: inner cutting blade 7: pivot

8: cover plate 9: screw assembly

10: pivot axis 11: first pinion

12 gear 13 shaft

14 handle 15 second pinion

16, 116: ratchet lever 17: support pin

18: bearing 19: spring

20: gear detent 21: pivot pin

22: torsion spring 23: rotor

24: spindle 25: operating lever

26: coil spring 27: locking member

28: locking groove C: cable

Ca: Core S: Space

Background of the Invention and Related Technologies

The present invention relates to a manual cable cutter that can easily cut metal cables such as iron ropes, wires, communication lines, reinforcing lines.

For example, US Pat. No. 4,223,439 discloses this type of cable cutter. Conventional cable cutters have fixed and movable handles coupled to each other at each upper portion and pressed in a direction in which one is separated from the other by a spring, and a fixed portion having a base portion fixed to the upper portion of the fixed handles. The blades and the teeth of the rotating blade pivotally attached to the upper part of the rotating blade and the movable handle having a base portion pivotally attached to the tip of the stationary blade and an arcuate outer surface formed of continuous teeth. It consists of an operating lever having an engaging claw for engaging with the member, whereby the opening and closing operation of the movable handle to the fixed handle is performed by moving the operating lever to keep the teeth held in engagement with the engaging claw. In the direction of closing the rotating blade, Rotate in the cutting direction of the table or the like.

In the practical use of the conventional cable cutter, the cable or the like is put in a space formed by the fixed blade and the rotating blade, and then rotated relative to the pivot so that the free end of the rotating blade is guided in the closing direction, thereby fixing and Rotating blades surround the outer circumference of the cable or the like, after which the movable handles continue to operate to close and open alternately with respect to the stationary handle.

As a result of the continued operation of the movable handle, causing the engaging claw of the operating lever to idle over one of the teeth and repeat the engagement with the adjacent one of the teeth until the space mentioned above becomes zero. By this, the cable or the like can be cut by opposite cutting edges of the stationary and rotating blades.

In the conventional cable cutter, the base portion of the rotating blade is pivotally attached to the upper portion of the fixed blade. In other words, the pivot site for both blades is located at the top of the cable cutter. This structure can be used to cut a cable of a relatively large diameter because a cable or the like can be cut in a state completely surrounded by two blades. Furthermore, in the case of paying attention only to the cable cutting operation by moving the rotary blade in the closing direction with respect to the opening and closing operation of the movable handle, the conventional cable cutter is a movable handle as a device for moving the rotary blade in the closing direction. Use a control lever pivotally attached to the This operating lever cooperates with the position at which the two blades are pivotally attached to each other and the position at which the handles are engaged with each other to form a so-called toggle mechanism.

The use of the toggle mechanism has the advantage of imparting a large shear force to the rotating blade with a small force, but has the drawback that it is impossible to move the rotating blade in the opening direction during the cable cutting operation.

Depending on the relationship between the cutting capacity of the cable cutter and the hardness and diameter of the cable to be cut, it is likely that the blade cannot be rotated in the direction of closing the rotating blade even by repeatedly operating the movable handle after the cutting blade has been cut into the cable. However, the conventional cable cutter does not have a structure that can easily solve such an unforeseen problem, that is, a structure for forcibly moving in the direction of opening the rotating blade and easily removing the cable. This is the biggest problem in using a conventional cable cutter. Some conventional cable cutters have a structure for releasing the engagement between the engaging claw of the operating lever and the teeth of the rotating blade. However, this releasing mechanism is not only possible as a device for forcibly moving the rotating blade in the opening direction during the cable cutting work but also as a device for moving the rotating blade held in the state before or after completion of the cable cutting work. It is.

For this reason, when such a problem as described above occurs, that is, when the cutting blade of the rotating blade cuts deeply into the cable, the engaging claw of the operating lever can lead to the release state from the teeth. Even if it is impossible to rotate the rotating blade in the direction of opening only by hand force, furthermore, dangerous work requires dangerous work in such rotational operation.

(Purpose and summary of the invention)

The main object of the present invention is to solve the big problem that the conventional cable cutters are sealed during the cable cutting operation in detail, even if a problem occurs that can not continue the cable cutting operation during the cable cutting operation rotating blades with very easy and safe operation To provide a manual cable cutter that can rotate in the reverse direction.

In order to achieve the above object, according to the present invention, a pair of fixed and movable handles 1, 2 having respective upper portions joined together and pressed by springs 26 so that one is spaced apart from the other And a fixed blade (3) having an inner cutting blade (5) and a base fixed to an upper portion of the fixing handle, and an inner cutting blade (6) and an outer tooth (4a) continuously arranged in an arc shape, In addition, in the manual cable cutter consisting of a rotary blade (4) having a base pivotally attached to the tip of the fixed blade, the gear 12 is supported coaxially around the outer teeth and the shaft (13) of the rotary blade Engagement with the first pinion 11 for mutual engagement with the second pinion 15 and the second pinion 15 provided on the movable handle for mutual engagement with the gear 12. Can be switched between a state and a neutral state, and in the engaged state, the second pinion 15 is rotated by the movement with respect to the fixed handle so that the rotation is transmitted to the gear 12 and then the first The latching lever 16, which is transmitted to the pinion 11 and finally to the rotary blade, can rotate the rotary blade in the cable cutting direction, and is engaged with the second pinion 15, and The gear detent 20, which can be switched between the neutral state and prevents the second pinion 15 from rotating in the engaged state, and the ratchet lever 16 is connected to the second. If the pinion 15 is held in a neutral state, the rotary blade can be rotated in the cable cutting direction, and the ratchet lever 16 and the gear detent 20 are rotated. The handle 14 is integrally fixed to the shaft 13 in order to allow the rotating blade to rotate in the direction of cutting and releasing the cable, when it is maintained in its neutral state with respect to the second pinion 15. There is provided a manual cable cutter, characterized in that consisting of a combination of.

Furthermore, according to the invention, a pair of fixed and movable handles 1, 2 having respective upper portions joined to each other and pressed by springs 26 so that one is spaced apart from the other, the inner cutting The blade (5) has a fixed blade (3) having a base fixed to the upper portion of the fixing handle, the inner cutting blade (6) and the outer teeth (4a) arranged in a continuous arc shape, and also of the fixed blade In a manual cable cutter consisting of a rotary blade (4) having a base pivotally attached to the tip, the interlocking of the outer blade of the rotary blade with the gear (12) coaxially supported around the shaft (13) The first pinion 11 and the second pinion 15 provided on the movable handle for mutual engagement with the gear 12, and the second pinion 15 with the second pinion 15 Can be switched in this way, preventing the second pinion 15 from rotating in the engaged state and between the two detents 20 with respect to the cogwheel 20 and the second pinion 15. Can be switched, allowing the second pinion 15 to rotate in one direction in the movement of the movable handle relative to the fixed handle in the state maintained in one of the two states and in the state maintained in one of the two states. Allows the two pinions 15 to be rotated in opposite directions when the cog detent is held in a neutral state, and rotation of the second pinion 15 in either direction is such that the gear 12 Ratchet lever 116 which is then delivered to the first pinion 11, thereby allowing the rotating blade to rotate in the direction of cutting and releasing the cable. It is provided with a manual cable cutter, characterized in that consisting of a combination of.

These and other objects, unique features and advantages of the present invention will become more apparent to those skilled in the art from the following description of the preferred embodiments of the present invention as illustrated in the accompanying drawings.

(Detailed Description of the Preferred Embodiments)

The invention will now be described in detail with reference to the illustrated embodiments.

1 to 5 illustrate a first embodiment of a manual cable cutter according to the invention. The cable cutter includes a fixed handle (1), a movable handle (2) pressurized in a direction away from the fixed handle (1) by a coil spring (26), a wide base (3a), and an inner cutting blade (5). The base has a fixed blade (3), the outer teeth (4a) and the inner cutting blade (6) arranged in a continuous arc shape and pivotally attached to the tip of the fixed blade (3) by the pivot (7) A quadrilateral having a rotating blade 4 and a bent wall 8a having and working to make the fixed and movable handles 1 and 2 cooperate with the wide base 3a of the fixed blade 3 to make them integral with each other; The cover plate 8 is comprised.

With the cover plate 8 sandwiching the upper ends of the stationary and movable handles 1 and 2 and the wide base 3a of the stationary handle 3, they are the sides of the stationary handle 1. By a screw assembly 9 on the top and also by a pivot shaft 10 on the side of the movable handle 2. Thus, the fixing handle 1 is fixed at its upper end between the cover plate 8 and the wide base 3a by means of the screw assembly 9, whereas by the coil spring 26, The movable handle 2 pressed in the direction away from the fixed handle 1 has an upper end inserted between the cover plate 8 and the wide base 3a, and with respect to the pressing force of the coil spring 26. It is movable relative to the pivot shaft 10 towards the stationary handle 1 and away from the stationary handle 1 with the aid of the pressing force of the coil spring 26. The fixed blade (3) having a wide base attached to the fixed handle (1) by the screw assembly (9), and the base pivotally attached to the tip of the fixed blade (3) by the pivot (7) The rotating blade 4 having is suitable for completely enclosing the cable (not shown) or the like and for cutting the cable or the like for each of the inner cutting edges 5 and 6.

The cover plate 8 and the wide base 3a of the stationary blade 3 are also joined together by a shaft 13, which is located closer to the stationary handle side than to the movable handle side. And protrude outward from the cover plate (8). A first pinion supported in a direction intermeshing with the teeth 4a and the gear 12 of the rotating blade 4 around a portion of the shaft 13 disposed between the cover plate 8 and the wide base 3a. 11) is rotatably mounted coaxially. At the protruding end of the shaft 13 there is integrated a handle 14 which enables the rotary blade 4 to be manually rotated in both directions, not only under the operation of the movable handle 2 but also under certain conditions which will be described later. Equipped with.

The upper end of the movable handle 2 inserted between the cover plate 8 and the wide base 3a of the stationary blade 3 is rotatably mounted about the pivot shaft 10 and around the shaft 13. It has a second pinion 15 which is held in engagement with the gear 12 and also has a ratchet lever 16 which can be switched between an engaged and neutral state with respect to the second pinion 15, have. As well shown in FIGS. 4 and 5, the ratchet lever 16 is pivotally supported around the support pin 17 and has a notch formed in the curved wall 8a of the cover plate 8. 8b) has one end projecting outward so that the ratchet lever 16 can be actuated by the projecting one end, and also engages and releases a detent with a second pinion 15 It has the other end formed integrally with 16a). The latch lever 16 portion in the vicinity of the support pin 17 is provided in the movable handle 2 to lug 16b which is pressed toward the support pin 17 by the bearing 18 and the spring 19 which cooperate with each other. : lug). As illustrated in FIG. 4, when the latch lever 16 is actuated to cause the bearing 18 to contact one side of the lug 16b, the detent 16a is in contact with the second pinion 15. To interlock. At this time, the latch lever 16 is in the engaged state with respect to the second pinion 15. As illustrated in FIG. 5, when the latch lever 16 is actuated to cause the bearing 18 to contact the other side of the lug 16b, the detent 16a is removed from the second pinion 15. Are separated. At this time, the latch lever 16 is in a neutral state with respect to the second pinion 15.

Furthermore, the cover base 8 and the wide base 3a of the fixed blade 3 are joined to each other by a pivot pin 21 arranged on the pivot shaft 10. It is coupled to each other by a pivot pin 21 between the cover plate 8 and the wide base 3a. A gear wheel that prevents the second pinion 15 from rotating backward when engaged with the second pinion 15 in the portion of the pivot pin 21 between the cover plate 8 and the wide base 3a. The detent 20 is pivotally mounted. The torsion spring 22 is wound around the pivot pin 21 and disposed between the bent wall 8a of the cover plate 8 and the gear detent 20, as illustrated in FIG. The gear detent 20 is always pressed in the direction of engagement with the second pinion 15. In the vicinity of the gear detent 20 is provided a rotor 23 having a working end 23a and pivotally mounted around the spindle 24. A portion of the spindle 24 protruding outward from the wide base 3a of the fixed blade 3 is integrally provided with an operating lever 25 for rotating the rotor 23 in a desired direction. The working end 23a of the rotor 23 in the direction spaced apart from the side of the cogwheel 20 is operated by the operation lever 25 which rotates around the spindle 24. 20 is pressurized by the torsion spring 22 to engage the second pinion 15 as illustrated in FIG. 4, in which state the gear detent 20 causes the second pinion 15 to be driven by the second pinion 15. In FIG. 4, the arrow enables rotation in the idle state beyond the cogwheel 20 in the direction indicated. Reverse operation of the operating lever 25 causes the working end 23a of the rotor 23 to push the gear detent 20 against the pressing force of the torsion spring 22, as shown in FIG. . As a result, the gear detent 20 is detached from the second pinion 15 and then the gear detent 20 is in a neutral state with respect to the second pinion 15.

When the ratchet lever 16 is switched from the engaged state to the neutral state and at the same time the gear detent 20 is also brought into the neutral state, not only the second pinion 15 but also the gear 12 and the first pinion 11 can also be freely rotated in both directions. In this state, manual rotation about the handle 14 in the desired direction rotates the first pinion 11 in the same direction. Therefore, the rotary blade 4 can be forcedly rotated in both directions by the rotation of the handle 14 regardless of the operation of the movable handle 2 with respect to the fixed handle (1). Returning to FIGS. 1 and 2, reference numeral 27 denotes a locking member provided at the lower end of the fixed handle 1 and reference numeral 28 denotes a locking groove formed at the lower end of the movable handle 2. . The manual cable cutter moves the movable handle 2 toward the fixed handle 1 against the pressing force of the coil spring 26 and engages the locking member 27 with the locking groove 28 as illustrated in FIG. It can be kept unused.

In cutting a cable or the like by using a manual cable cutter having the above-mentioned structure, first, the operating lever 25 is operated to cause the action end 23a of the rotor 23 to rotate the gear detent 20. Release from the side, thereby causing the gear detent 20 to engage the second pinion 15, and the latch lever 16 is actuated to cause its detent 16a to 2 mesh with the pinion (15).

In this state, that is to say in the state of FIG. 4, the cable or the like is located in the space S formed by the inner cutting edges 5 and 6 of the fixed and rotating blades 3 and 4, and the rotating blade 4 ) Is guided between the cover plate 8 and the wide base 3a of the fixed blade 3 by operating the movable handle 2 to continue to move in perspective to the fixed handle. The closing and opening operation of the movable handle 2 relative to the fixed handle 1 rotates the second pinion 15 in the direction indicated by the arrow in FIG. 4 by the action of the detent 16a of the ratchet lever 16. You can't.

The opening operation of the movable handle 2 causes the detent 16a of the ratchet lever 16 to idle over the second pinion 15. Its closing action causes the detent 16a to push the second pinion 15. Furthermore, in this operation, the second pinion 15 is prevented from reverse rotation by the gear detent 20 which is held in engagement with the second pinion 15.

Repeated operation of the movable handle 2 rotates the second pinion 15, and then not only the gear 12 but also the first pinion 11 also rotates in the respective directions indicated by the arrows in FIG.

As a result, the rotating blade 4 having the outer teeth 4a meshed with the first pinion 11 is moved in the direction of decreasing the area of the space S. As shown in FIG. As a result, the cable or the like which comes in contact with the inner cutting edges 5 and 6 of the fixed and rotating blades 3 and 4 can be easily cut.

Furthermore, the latch lever 16 can contact the lower end of the curved wall 8a of the cover plate 8 when the movable handle 2 is opened to the maximum with respect to the fixed handle 1. If the cheat lever 16 is configured, the first opening operation of the movable handle 2 allows the ratchet lever 16 to be automatically switched to the engaged state. In this case, however, the switching of the latch lever 16 from the engaged state to the neutral state must be made manually. The rotating blade 4 is operated by manually operating the handle 14 while holding the latch lever 16 in a neutral state and at the same time firmly holding the fixed and movable handles 1 and 2 held in the closed state. Rotate until it comes in contact with the outer circumference. The movable handle 2 then contacts the lower end of the bent wall 8a of the cover plate 8 such that the latch lever 16 is brought into engagement with the second pinion 15. It is opened to the maximum with respect to the fixing handle (1).

In this state, the movable handle 2 is repeatedly closed and opened with respect to the fixed handle 1 to cut the cable.

In the event that a problem arises that the cutting operation cannot be continued during the cutting operation, the ratchet lever 16 is switched to the neutral state, and at the same time, the operation lever 25 is rotated to rotate the rotor 23 into the gear detent. It pushes against (20), thereby switching the gear detent 20 to a neutral state. As a result, the first pinion 11, the gear 12 and the second pinion 15 are freely rotated in both directions indicated by arrows in FIG. Therefore, by manually rotating the knob 14 fixed to the shaft 13 counterclockwise in FIG. 1, the first pinion 11 inserted around the shaft 13 is forced to rotate in the same direction. In contrast, the rotating blade 4 having the outer teeth 4a meshed with the first pinion 11 is forcibly rotated clockwise in FIG. 5. Thus, the cable during processing can be released from between the stationary and rotating blades 3 and 4 to easily cope with work in the event of a problem. Since the rotary blade 4 can be rotated in the reverse direction by the rotation operation of the handle 14, that is, the manual operation, the rotation blade release operation can be easily and safely performed.

In the embodiment shown in FIGS. 1 to 5, the inner cutting edges 5 and 6 of the stationary and rotating blades 3 and 4 are arcuately shaped as shown.

However, it is by no means limited to this. For example, they may be formed substantially V-shaped as shown in FIGS. 6A and 6B. In this example, each of the cutting edges 5 and 6 has a bottom portion 5a or 6a arranged on a circumferential circumference about the pivot 7 and opposite sides 5b or 6b forming a substantially straight line. Have The cable C is at its outer periphery the bottom portion 5a and core at a core Ca, which is gradually cut by the substantially straight sides 5b or 6b of the inner cutting edges 5 and 6 and where the cable cutting force is concentrated. Finally cut by 6a). Therefore, even with this structure, even ACSR (alumibnum cable steel-reinforced) can be easily cut. Therefore, the shape of the inner cutting edges 5 and 6 should be determined according to the type of cable to be cut.

7 to 9 illustrate a second embodiment of a manual cable cutter according to the invention. The same parts and members as in the previous embodiment are denoted by the same reference numerals as used in FIGS. 1 to 5, and descriptions thereof are omitted below.

In the second embodiment, the forward and reverse rotations of the rotary blade 4 are both achieved by the opening and closing operation of the movable handle 2 with respect to the fixed handle 1, whereas in the foregoing embodiment, the rotary blade Reverse rotation of (4) is achieved by the rotation operation of the handle (14). As shown in FIG. 7, in the previous embodiment, the handle 14 integrally fixed to the shaft 13 on which the first pinion 11 and the gear 12 are fitted is omitted in the second embodiment, Instead, as shown in FIGS. 8 and 9, a ratchet lever 116 is employed which can be switched between two different engagement states for the second pinion 15. The rotary blade 4 can be rotated forward by the repetitive movement of the movable handle 2 when the ratchet lever 116 is held in one of two engagement states, and the ratchet lever 116 is different. When it is held in the engaged state, it can be rotated in the reverse direction by the repeating operation.

In particular, the ratchet lever 116 is pivotally supported around the support pin 17 and protrudes outward from the notch 8b formed in the curved wall 8a of the cover plate 8. Having one end, the ratchet lever 116 can be operated with one end that protrudes similar to the ratchet lever 16 in the previous embodiment. The portion of the ratchet lever 116 near the support pin 17 is integrally provided with first and second detents 116a and 116c on one side thereof that can be engaged with and detached from the second pinion 15 respectively. The other side is integrally provided with the lug 116b which is provided in the movable handle 2 and pressed against the support pin 17 by the bearing 18 and the spring 19 which cooperate with each other. The first and second detents 116a and 116c are positioned at a predetermined distance with the support pin 17 inserted therebetween, and two of the latch levers 116 relative to the second pinion 15. Different engagement states. Specifically, when the latch lever 116 is actuated to cause the bearing 18 to contact one side of the lug 116b as illustrated in FIG. 8, the second detent 116a is solely removed. While engaged with the two pinion 15, the ratchet lever 116 is actuated to allow the bearing 18 to contact the other side of the lug 116b as illustrated in FIG. 9. The detent 116c alone engages the second pinion 15. Thus, the latch lever 116 is switched between two different engagement states with respect to the second pinion 15.

In the engaged state between the first detent 116a and the second pinion 15, the first cycle of the closing and opening operation of the movable handle 2 with respect to the fixed handle 1 is performed by the latch lever 116. By the action of the first detent 116a, the second pinion 15 can be rotated in the direction indicated by the arrow in FIG. 8 by an amount corresponding to one tooth of the second pinion 15. In this operation, the opening operation of the movable handle 2 causes the first detent 116a of the ratchet lever 116 to idle beyond the second pinion 15 while its closing operation is performed by the first detent ( Let 116a push the second pinion 15.

On the other hand, in the engaged state between the second detent 116c and the second pinion 15, the closing operation of the movable handle 2 causes the second detent 116c to open the second pinion 15. In contrast to idling over, its opening action causes the second detent 116c to push the second pinion 15 in the direction indicated by the arrows in FIG. 9.

In cutting of a cable or the like by a manual cable cutter having the latch lever 116 of the above-described structure, first, the gear detent 20 is switched to the engaged state with respect to the second pinion 15, and the ratchet is latched. The lever 116 is switched so that its first detent 116a engages with the second pinion 15, and the cable or the like is positioned in the space S formed by the fixed and rotating blades 3 and 4. And, the tip of the rotary blade 4 is guided between the cover plate 8 and the wide base 3a of the fixed blade 3 so as to completely surround the cable and the like. Then, the movable handle 2 continues to move in perspective from the fixed handle 1. As a result, the second pinion 15 is rotated in the direction indicated by the arrow in FIG. 8 by the first detent 116a of the latch lever 116. The rotation of the second pinion 15 is transmitted to the gear 12 and the first pinion 11 fixed around the shaft 13, and the outer teeth (1) are held in engagement with the first pinion 11 ( Is transferred to a rotating blade 4 having 4a). Therefore, the rotating blade 4 is moved in the forward direction, that is, in the direction of decreasing the area of the space S. As a result, the cable or the like which is in contact with the inner cutting edges 5 and 6 of the fixed and rotating blades 3 and 4 can be easily cut.

In the event that a problem arises that the cutting operation cannot be continued during the cutting operation, the operating lever 25 rotates to push the rotor 23 with respect to the gear detent 20 and thereby the second pinion 15. The gear detent 20 is switched to a neutral state in which the gear 12 and the first pinion 11 are free to rotate. Thereafter, the latch lever 116 is switched so that the second detent 116c engages with the second pinion 15. In this state, when the movable handle 2 is repeatedly moved from the fixed handle 1 to the perspective, the second pinion 15 is moved to the ninth by the action of the second detent 116c of the ratchet lever 116. It is rotated in the reverse direction indicated by the arrow in the figure.

The rotation of the second pinion 15 is transmitted to the gear 12 and the first pinion 11, which are fixed coaxially around the shaft 13, and are kept in engagement with the first pinion 11. It is transmitted to a rotating blade 4 having outer teeth 4a. Therefore, the rotating blade 4 is rotated in the reverse direction, that is, in the direction of increasing the area of the space S, as shown by the arrow in FIG. As a result, the troublesome cables can be easily removed from between the stationary and rotating blades 3 and 4. The second embodiment makes it possible to reverse the rotating blade 4 by the same operation of opening and closing the movable handle 2 with respect to the fixed handle 1, so that the above cutting problem cannot be continued. The work required in the second embodiment when it occurs is safer and easier than the work required in the previous embodiment, which depends on the rotational operation of the handle 14.

As described above, the present invention provides a fixed handle of a first pinion fitted snugly around the shaft and a gear fitted coaxially with the first pinion so as to be interlocked with the outer teeth of the rotating blade. And a latch lever which is provided on the side and is held in mutual engagement with the gear, and can be switched between two other states with respect to the second pinion and an engagement state with respect to the second pinion. It is characterized by including a gear detent on the movable handle side which can be switched between the neutral state. Therefore, metal cables of any kind can be easily cut by the fixing and rotating blades by continuing to operate the movable handle with respect to the fixing handle after the ratchet lever and the gear detent are switched to their respective predetermined states.

If a problem that prevents the cutting operation from continuing occurs during the cutting operation of a manual cable cutter with a ratchet lever that can be switched between the engaged and neutral state of the second pinion, the ratchet lever and the gear The detent is switched to their respective neutral states with respect to the second pinion, and then the handle is manually operated to forcibly rotate the rotating blade in the cable release direction. The cable during processing can be easily released from between the two blades in this way. If a ratchet lever with a second detent that engages with the second pinion is employed when the rotating blade has a first detent that engages the second pinion when the rotating blade is rotated in the forward direction, Switch ratchet lever so that the above-mentioned second detent engages with the second pinion, shift the gear detent to neutral with respect to the second pinion, and repeatedly move the movable handle from the fixed handle to the perspective It can be easily overcome by thereby forcibly rotating the rotating blade in the cable release direction without using the handle. Therefore, the cable can be easily released from between the two blades.

Accordingly, the present invention can provide a manual cable cutter that can be forced to rotate the rotating blade in the reverse direction and is easy to use.

Furthermore, since the present invention employs a gear mechanism without the use of a conventional toggle mechanism, forced rotation of the rotating blade in the reverse direction has been realized for the first time. Thanks to the adoption of the gear mechanism, the desired cutting force can be freely determined by appropriately selecting the diameter ratio between the first and second pinions and the gear and the number of teeth of the first and second pinions and the gear. In other words, the amount of rotation of the first and second pinions and the gear for every cycle of the movable handle operation, ie the amount of cut of the cable per cycle, can be freely determined by appropriately adjusting the intermittent feed amount of the second pinion.

Claims (6)

A pair of fixed and movable handles (1, 2), inner cutting blades (5) and the fixed handles having respective upper portions joined to each other and pressed by springs 26 so that one is spaced apart from the other A base having a fixed blade (3) having a base fixed to the upper portion, and an outer tooth (4a) arranged in an arcuate shape with the inner cutting blade (6), and a base pivotally attached to the tip of the fixed blade In the manual cable cutter comprising a rotating blade (4) having a first pinion (11) for interlocking with the outer teeth of the rotating blade and the gear (12) coaxially supported around the shaft (13), The second pinion 15 provided on the movable handle and the second pinion 15 can be switched between the engaged state and the neutral state for mutual engagement with the gear 12, In the rim state, the second pinion 15 is rotated by the movement of the movable handle to the fixed handle so that the rotation is transmitted to the gear 12 and then to the first pinion 11 and finally the rotation. A latch lever 16 which is transmitted to the blade and thereby rotates the rotary blade in the cable cutting direction, and can be switched between the engaged state and the neutral state relative to the second pinion 15, and the engaged state In which the detent 20 and the ratchet lever 16, which can prevent the second pinion 15 from rotating in reverse, are maintained in a neutral state with respect to the second pinion 15 In this case, the rotating blades can be rotated in the cutting direction of the cable, and the ratchet lever 16 and the gear detent 20 are each neutral with respect to the second pinion 15. Manual cable cutter, characterized in that it consists of a combination of the handle 14 is fixed to the shaft 13 so that the rotating blade can be rotated in the direction of cutting and releasing the cable if it is held . 2. Hand-held cable cutter according to claim 1, characterized in that the ratchet lever (16) has a detent (16a) for engagement with the second pinion (15). 2. The gear stop (20) according to claim 1, wherein the gear stop (20) is pressurized by a spring (22) so that the gear stop (20) is always held in engagement with the second pinion (15). Cable cutter, characterized in that can be converted to a neutral state with respect to the second pinion (15) by a rotor (23) suitable for pushing away from the second pinion (15). A pair of fixed and movable handles 1 and 2 having respective upper portions coupled to each other and pressed by springs 26 so that one is spaced from the other, the inner shear blade 5 and the fixed handle The base has a fixed blade (3) having a base fixed to the upper portion, the outer cutting teeth (6) and the outer teeth (4a) arranged in an arcuate series and pivotally attached to the tip of the fixed blade A manual cable cutter comprising a rotating blade (4) having a first pinion (11) for engagement with a gear (12) coaxially supported about the outer teeth and a shaft (3) of the rotating blade, and The second pinion 15 provided on the movable handle for mutual engagement with the gear 12 and the second pinion 15 can be switched between the engaged state and the neutral state, and the engaged state Can be switched between the two detents 20 and the two engaged states with respect to the second pinion 15, which can prevent the second pinion 15 from rotating in reverse The second pinion 15 causes the second pinion 15 to rotate in one direction by the movement of the movable handle relative to the stationary handle while the state remains in one of the states. Allows the wheel detent to rotate in the opposite direction when it is in a neutral state, wherein the rotation of the second pinion 15 in either direction is transmitted to the gear 12 and then the first It is transmitted to the pinion 11, characterized in that it consists of a combination of the latch lever 116 to enable the rotating blade to rotate in the direction of cutting and releasing the cable. Hand-operated cable cutters that. 5. The latch lever 116 has two pawls 116a, 116c for engagement with the second pinion 15, one of which is one of the ratchet levers (116). 116) and the other detent keeps the ratchet lever in another engagement. 5. The gear pawl (20) according to claim 4, wherein the gear pawl (20) is pressurized by a spring (22) so that it is always held in engagement with the second pinion (15). Manual cable cutter, characterized in that can be switched to the neutral state with respect to the second pinion by a rotor (23) suitable for pushing away from the second pinion (15).

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