CN112893984B

CN112893984B - Cable scissors

Info

Publication number: CN112893984B
Application number: CN202110050179.1A
Authority: CN
Inventors: 王震
Original assignee: Zhejiang Jiantuo Tool Manufacturing Co ltd
Current assignee: Zhejiang Jiantuo Tool Manufacturing Co ltd
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2022-05-31
Anticipated expiration: 2041-01-14
Also published as: CN112893984A

Abstract

The invention provides a cable cutter, and belongs to the technical field of mechanical cutting. It has solved the manual scheduling problem that shears and waste time and energy of current cable. The invention comprises a handle seat and two blades, wherein the two blades are divided into a fixed blade and a movable blade, the fixed blade is fixed on the handle seat, the movable blade rotates to enlarge or reduce a shearing area, external teeth are arranged on the movable blade, a gear and a driving mechanism are arranged on the handle seat, the gear and the driving mechanism are in transmission connection through a worm gear, the worm gear is rotatably arranged on the handle seat and is concentric with the gear, the worm is connected with the driving mechanism, and a pressing seat which enables the movable blade and the fixed blade to be always attached to each other is also arranged on the handle seat. The invention has the advantages of electric drive, labor saving in shearing, smooth shearing, convenient assembly and disassembly and adjustable gear clearance.

Description

Cable scissors

Technical Field

The invention belongs to the technical field of mechanical shearing, and particularly relates to a cable shear.

Background

Most of the existing cables are manually sheared, and the manual shearing is labor-consuming and time-consuming due to certain toughness of the cables.

Disclosure of Invention

The invention aims to overcome the defects of manual shearing of the conventional cable, and provides the electric cutter which is driven by electric power, saves labor in shearing, is smooth in shearing, is convenient to assemble and disassemble and has an adjustable gear clearance.

The purpose of the invention can be realized by the following technical scheme:

a pair of cable scissors comprises a handle seat and two blades arranged on the handle seat, wherein the two blades are hinged with each other and enclose to form a shearing area, the two blades are divided into a fixed blade and a movable blade, the fixed blade is fixed on the handle seat, the movable blade can rotate around the hinged position to enlarge or reduce the shearing area, the periphery of one side of the movable blade is arc-shaped and is provided with external teeth, the handle seat is rotatably provided with a gear which is engaged with the external teeth of the movable blade, the handle seat is also provided with a driving mechanism for driving the gear to rotate, the gear is in transmission connection with the driving mechanism through a worm gear, the worm wheel is rotationally arranged on the handle seat and is concentric with the gear, the worm is connected with the driving mechanism, the handle seat is also provided with a pressing seat which enables the movable blade and the fixed blade to be always attached to each other, the pressing seat and the handle seat are relatively fixed, and the pressing seat presses on the movable blade.

In the cable shears, the pressing seat is further provided with a pressing sheet used for being pressed against the movable blade in a contact mode, and the pressing sheet is detachably and fixedly connected with the pressing seat.

In the cable shears, the worm gear is located in the handle seat, the handle seat and the movable blade are respectively arranged on two sides of the fixed blade, the gear and the movable blade are located on the same side of the fixed blade, the fixed blade is further provided with a abdicating hole, the gear is rotatably arranged on the handle seat through a rotating shaft, one end of the rotating shaft is located in the handle seat, and the other end of the rotating shaft is concentrically connected with the gear after passing through the abdicating hole.

In the cable shears, the pressing seat and the gear are located on the same side of the fixed blade, the pressing seat is fixed on the fixed blade, the pressing seat is circular and concentric with the gear, the pressing seat is provided with a containing cavity, and the pressing seat covers the gear in the containing cavity.

In the cable shears, the pressing seat is provided with a limiting area, the limiting area is communicated with the accommodating cavity, and the movable blade is always limited in the limiting area.

In foretell cable shears, each blade all has the cutting edge, and the cutting edge is circular-arcly, and the cutting edge of two blades encloses to close and forms above-mentioned shearing area, the cutting edge of activity blade divide into first segmental arc and second segmental arc along its extending direction, and the relative second segmental arc of first segmental arc is close to the articulated department of activity blade, and the arc footpath of first segmental arc is less than the arc footpath of second segmental arc.

In the cable shears of the above-mentioned type, the movable blade is gradually reduced in width in a direction of rotation that reduces the above-mentioned cutting area.

In the cable shears, one end of the fixed blade is a fixed end fixedly connected with the handle seat, the other end of the fixed blade is a hinged end hinged with the movable blade, and the width of the fixed blade is reduced in the process of extending from the fixed end to the hinged end.

In foretell cable is cut, be equipped with a plurality of tooth portions on the worm wheel periphery, a plurality of tooth portions evenly set up along the worm wheel circumferencial direction at interval in proper order, still establish a tangent plane on the worm wheel periphery, a plurality of tooth portions of worm wheel axle center extending direction transverse cutting are followed to the tangent plane from worm wheel one side.

In the cable cutter, the section is parallel to the axial extension direction of the worm wheel.

In a cable cutter of the above kind, the cutting surface has a cutting depth in the transverse direction which is smaller than the width of the worm wheel.

In the cable cutter, a plane where the minimum distance between the tangent plane and the axis of the worm wheel is located is a symmetry center of the worm wheel.

In the cable shears, the driving mechanism is a motor.

In the cable shears, the movable blade and the fixed blade are hinged through a hinge structure, the hinge structure comprises an adjusting sleeve arranged on the fixed blade and an inserting shaft concentrically inserted in the adjusting sleeve, the adjusting sleeve and the inserting shaft are both cylindrical, the outer diameter of the inserting shaft is matched with the inner diameter of the adjusting sleeve, and the inserting shaft can concentrically rotate relative to the adjusting sleeve, the fixed blade is provided with a movable groove for inserting the adjusting sleeve, the movable groove penetrates through the fixed blade, the groove width of the movable groove is matched with the outer diameter of the adjusting sleeve, the movable groove extends along the connecting line direction between the center of the adjusting sleeve and the center of the rotating shaft, and the line between the two is superposed with the symmetrical center of the movable groove, one end of the inserting shaft is provided with a stop part, the inserting shaft is also provided with an external thread, the other end of the inserting shaft sequentially passes through the movable blade and the adjusting sleeve and then is connected with a first nut thread, and the hinge structure also comprises a locking structure for fixing the adjusting sleeve.

In foretell cable shears, locking structure is including setting up the tooth head in above-mentioned adjusting collar one end, and the tooth head is circular and concentric with the adjusting collar, is equipped with a plurality of meshing teeth in the tooth head periphery, and a plurality of meshing teeth evenly set up along tooth head circumferencial direction interval in proper order, be equipped with the tooth's socket of an indent on the side of fixed blade and movable blade laminating, above-mentioned movable trench in the tooth's socket and the tooth's socket extend along movable groove extending direction, the tooth head inlays and establishes in the tooth's socket, be equipped with on the inner wall of tooth's socket one side be used for with the tooth head engaged with the internal tooth, still be equipped with the external screw thread on the adjusting collar, the other end of adjusting collar links to each other with a second nut screw thread after passing movable groove.

In the cable shears of the above aspect, the insertion shaft and the stop portion are integrally formed, and the tooth head and the adjusting sleeve are integrally formed.

Compared with the prior art, the invention has the advantages that: the electric drive and the shearing are labor-saving, the worm gear and worm transmission speed ratio is large, the output rotating speed is high, and the shearing efficiency is high; the fixed blade and the movable blade are always attached to each other through the pressing seat, so that the shearing flatness is ensured; the tangent plane is formed on the worm wheel, so that the worm wheel and the worm can be conveniently and quickly installed; the movable blade can adjust the center distance between the hinged part and the gear through the movement of the adjusting sleeve, so that the meshing gap between the external teeth on the movable blade and the gear can be adjusted.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is a schematic view of the present invention with the pressure base and the handle base removed;

FIG. 4 is a schematic view of a worm gear;

FIG. 5 is a front view of the worm gear;

FIG. 6 is a schematic view of the present invention with the movable blade and spindle removed;

FIG. 7 is an enlarged view of a portion of FIG. 6 at I;

fig. 8 is a schematic structural diagram of the adjusting sleeve.

In the figure, 1, a handle seat; 2. fixing a blade; 3. a movable blade; 4. a shear zone; 5. a first arc segment; 6. a second arc segment; 7. an outer tooth; 8. a gear; 9. a rotating shaft; 10. a hole of abdication; 11. a worm gear; 12. a worm; 13. a tooth portion; 14. cutting into noodles; 15. pressing a base; 16. tabletting; 17. an adjusting sleeve; 18. a stop part; 19. a tooth head; 20. a movable groove; 21. a tooth socket; 22. internal teeth.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 8, the cable shears provided by the present invention comprises a handle base 1 and two blades disposed on the handle base 1, wherein the two blades are arc-shaped, the two blades are attached to each other, the two blades are divided into a fixed blade 2 and a movable blade 3, one end of the two blades are hinged to each other, the other end of the fixed blade 2 is attached to the handle base 1, the fixed blade 2 is fixed on the handle base 1 through a fastening member such as a bolt, the other end of the movable blade 3 is freely movably disposed, the width of the movable blade 3 gradually decreases in the process of extending from the end of the hinged position to the movable end, one end of the fixed blade 2 is a fixed end fixedly connected with the handle base 1, the other end of the fixed blade is a hinged end hinged to the movable blade 3, the width of the fixed blade 2 decreases in the process of extending from the fixed end to the hinged end, the inner peripheries of the two blades are arc-shaped blades, the blades enclose to form a sealed cutting area 4, movable blade 3 relative fixed blade 2 rotates in-process and can make shear zone 4 reduce or increase to form the shearing effect, as shown in fig. 1, movable blade 3 anticlockwise rotation enables shear zone 4 to increase, movable blade 3 clockwise rotation enables shear zone 4 to reduce, movable blade 3's cutting edge divide into first segmental arc 5 and second segmental arc 6 along its extending direction, the relative second segmental arc 6 of first segmental arc 5 is close to the articulated department of movable blade 3, and the segmental arc of first segmental arc 5 is less than the segmental arc of second segmental arc 6.

The movable blade 3 and the handle seat 1 are respectively arranged at two sides of the fixed blade 2, the periphery of one side of the movable blade 3 is arc-shaped and is provided with external teeth 7, a gear 8 meshed with the external teeth 7 of the movable blade 3 is rotatably arranged on the handle seat 1, the gear 8 and the movable blade 3 are positioned at the same side of the fixed blade 2, the gear 8 is rotatably arranged on the handle seat 1 through a rotating shaft 9, a abdicating hole 10 is also arranged on the fixed blade 2, one end of the rotating shaft 9 is positioned in the handle seat 1, the other end of the rotating shaft 9 passes through the abdicating hole 10 and then is connected with the gear 8, the gear 8 is concentrically fixed on the rotating shaft 9 through a key, the rotating shaft 9 is rotatably arranged on the handle seat 1 through a bearing, a driving mechanism for driving the rotation of the gear 8 is also arranged in the handle seat 1, the driving mechanism is a motor, the gear 8 is connected with the driving mechanism through a worm gear transmission, and the worm wheel 11 is concentrically fixed on the rotating shaft 9 through a key, the worm wheel 11 and the gear 8 are concentric up and down, the outer diameter of the worm wheel 11 is larger than that of the gear 8, and the worm 12 is connected with a driving mechanism.

The periphery of the worm wheel 11 is provided with a plurality of tooth parts 13 which are used for being meshed with the worm 12, the plurality of tooth parts 13 are sequentially and uniformly arranged at intervals along the circumferential direction of the worm wheel 11, the periphery of the worm wheel 11 is also provided with a tangent plane 14, the tangent plane 14 is parallel to the axial extending direction of the worm wheel 11, for convenience of description, two sides of the worm wheel 11 are divided into a front side and a rear side, the tangent plane 14 transversely crosses a plurality of tooth parts 13 from the front side of the worm wheel 11 along the axial extending direction of the worm wheel 11, the tangent plane 14 is smaller than the width of the worm wheel 11 along the transverse direction, the plane where the minimum distance between the tangent plane 14 and the axial center of the worm wheel 11 is located is the symmetrical center of the worm wheel 11, as shown in figures 4 and 5, the four tooth parts 13 transversely crossed by the tangent plane 14 are sequentially adjacent, the parts 13 in the middle two tooth parts 13 are cut off by the tangent plane 14 and are larger than the two tooth parts 13 located on two sides, and the tangent plane 14 is used for facilitating the installation of the worm wheel 11 and the worm 12, the worm wheel 11 is meshed with the worm 12 at the tangent plane 14, the worm 12 is embedded into the tooth parts 13 from the front side of the worm wheel 11, and as the tangent plane 14 cuts off one part of the tooth parts 13, the tooth grooves 21 between two adjacent cut tooth parts 13 are shallow, the limit is small, and the quick installation of the worm 12 is facilitated.

Still be equipped with on the handle seat 1 and make movable blade 3 and fixed blade 2 paste the seat of pressing 15 that leans on each other all the time, press seat 15 and movable blade 3 to be located same one side of fixed blade 2, press seat 15 to paste and paste on fixed blade 2 and fix on fixed blade 2 through fasteners such as bolts, press seat 15 to be circular and with gear 8 concentric, be equipped with a appearance chamber on pressing seat 15, press seat 15 to cover gear 8 in it through holding the chamber, press and seted up a spacing district on seat 15, spacing district and appearance chamber intercommunication, movable blade 3 is spacing at this spacing district all the time, still be equipped with a preforming 16 in the spacing district, preforming 16 can be dismantled and fix on pressing seat 15, preforming 16 pastes and pastes on movable blade 3, press seat 15 to press movable blade 3 through preforming 16, make movable blade 3 paste and lean on fixed blade 2 all the time.

The movable blade 3 and the fixed blade 2 are hinged through a hinge structure, the hinge structure comprises an adjusting sleeve 17 arranged on the fixed blade 2 and an inserting shaft concentrically inserted in the adjusting sleeve 17, the adjusting sleeve 17 and the inserting shaft are both cylindrical, the adjusting sleeve 17 is hollow and solid, the upper end of the inserting shaft is provided with a circular stop part 18, the inserting shaft and the stop part 18 are integrally formed, the outer diameter of the stop part 18 is larger than that of the inserting shaft, the outer diameter of the inserting shaft is matched with the inner diameter of the adjusting sleeve 17, the inserting shaft can concentrically rotate relative to the adjusting sleeve 17, the lower end of the inserting shaft is provided with external threads, the upper end of the adjusting sleeve 17 is concentrically provided with a circular tooth head 19, the tooth head 19 and the adjusting sleeve 17 are integrally formed, the periphery of the tooth head 19 is provided with a plurality of meshing teeth, the plurality of meshing teeth are sequentially and uniformly arranged at intervals along the circumferential direction of the tooth head 19, and the lower end of the adjusting sleeve 17 is provided with external threads;

a movable groove 20 for inserting an adjusting sleeve 17 is formed in the fixed blade 2, the movable groove 20 is waist-shaped, the movable groove 20 penetrates through the fixed blade 2, the groove width of the movable groove 20 is matched with the outer diameter of the adjusting sleeve 17, the movable groove 20 extends along the direction of a connecting line between the center of the adjusting sleeve 17 and the center of the rotating shaft 9, the connecting line of the movable groove 20 and the center of the rotating shaft 20 is superposed with the symmetrical center of the movable groove 20, the adjusting sleeve 17 can move back and forth along the extending direction of the movable groove 20, an inward concave tooth groove 21 is formed in the side face, attached to the fixed blade 2 and the movable blade 3, of the fixed blade 2, the tooth groove 21 is also waist-shaped, the movable groove 20 is positioned in the tooth groove 21, the tooth groove 21 extends along the extending direction of the movable groove 20, the tooth head 19 is embedded in the tooth groove 21, the tooth head 19 is not higher than the side face, attached to the fixed blade 2 and the movable blade 3, inner wall of one side of the tooth groove 21 is provided with inner teeth 22 for being meshed with the tooth head 19, the lower end of the adjusting sleeve 17 is connected with a second nut after penetrating through the movable groove 20, the movable blade 3 is provided with a through hole, and the lower end of the inserted shaft sequentially passes through the through hole, the tooth head 19 and the adjusting sleeve 17 and then is connected with a first nut through threads;

the stop part 18 and the first nut are used for limiting up and down, so that the inserting shaft can be prevented from falling off the movable blade 3 and the fixed blade 2, and the first nut is rotated to reduce the distance between the first nut and the stop part 18, so that the movable blade 3 and the fixed blade 2 can be attached;

the adjusting sleeve 17 can be prevented from falling out of the movable groove 20 through the upper and lower limit of the tooth head 19 and the second thread, simultaneously, the second nut is rotated to reduce the distance between the second nut and the tooth head 19 until the second nut and the tooth head clamp the adjusting sleeve 17 up and down to fix the adjusting sleeve 17 and the fixed blade 2, and the engagement of the engaging teeth and the internal teeth 22 can also assist the fixing of the adjusting sleeve 17, prevent it from moving along the extending direction of the movable slot 20, loosen the second nut, make the adjusting sleeve 17 move along the extending direction of the movable slot 20, thereby driving the inserting shaft to move, adjusting the linear distance between the center of the inserting shaft and the center of the rotating shaft 9, by adjusting the distance the meshing clearance between the external teeth 7 of the movable blade 3 and the gear wheel 8 can be adjusted, after the gear 8 and the external teeth 7 are worn, the meshing clearance can be further adjusted, the optimal transmission effect is achieved, and the service lives of the movable blade 3 and the gear 8 are prolonged.

The handle seat 1 is also internally provided with a storage battery which is electrically connected with the motor, and the storage battery can be charged and supplies power for the motor.

It is to be understood that in the claims, specification of the invention, all "including … …" are to be interpreted in an open-ended sense, i.e. in a sense equivalent to "including at least … …", and not in a closed sense, i.e. in a sense not to be interpreted as "including … … only".

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The cable scissors are characterized by comprising a handle seat (1) and two blades arranged on the handle seat (1), wherein the two blades are mutually hinged, the two blades enclose a shearing area (4), the two blades are divided into a fixed blade (2) and a movable blade (3), the fixed blade (2) is fixed on the handle seat (1), the movable blade (3) can rotate around the hinged part to increase or reduce the shearing area (4), the periphery of one side of the movable blade (3) is arc-shaped and is provided with outer teeth (7), a gear (8) meshed with the outer teeth (7) of the movable blade (3) is rotatably arranged on the handle seat (1), a driving mechanism for driving the gear (8) to rotate is further arranged on the handle seat (1), the gear (8) is connected with the driving mechanism through worm gear transmission, a worm gear (11) is rotatably arranged on the handle seat (1) and is concentric with the gear (8), worm (12) link to each other with actuating mechanism, still be equipped with on handle seat (1) and make movable blade (3) and fixed blade (2) paste pressure seat (15) that leans on each other all the time, press seat (15) and handle seat (1) relatively fixed and press seat (15) to press on movable blade (3), be equipped with a plurality of tooth portions (13) in worm wheel (11) periphery, a plurality of tooth portions (13) evenly set up along worm wheel (11) circumferencial direction interval in proper order, still establish a tangent plane (14) in worm wheel (11) periphery, tangent plane (14) are followed worm wheel (11) one side and are followed a plurality of tooth portions (13) of worm wheel (11) axle center extending direction crosscut.

2. The cable shears as claimed in claim 1, wherein the worm gear is located in the handle seat (1), the handle seat (1) and the movable blade (3) are respectively disposed on two sides of the fixed blade (2), the gear (8) and the movable blade (3) are located on the same side of the fixed blade (2), the fixed blade (2) is further provided with an abdicating hole (10), the gear (8) is rotatably disposed on the handle seat (1) through a rotating shaft (9), one end of the rotating shaft (9) is located in the handle seat (1), and the other end of the rotating shaft passes through the abdicating hole (10) and then is concentrically connected with the gear (8).

3. The cable cutter as claimed in claim 2, wherein the pressing seat (15) and the gear (8) are located on the same side of the fixed blade (2), the pressing seat (15) is fixed on the fixed blade (2), the pressing seat (15) is circular and concentric with the gear (8), a cavity is formed in the pressing seat (15), and the pressing seat (15) covers the gear (8) through the cavity.

4. A pair of cable shears according to claim 1, 2 or 3, wherein each blade has a cutting edge which is arc-shaped, the cutting edges of the two blades enclose the cutting area (4), the cutting edge of the movable blade (3) is divided into a first arc section (5) and a second arc section (6) along the extension direction of the cutting edge, the first arc section (5) is close to the hinge joint of the movable blade (3) relative to the second arc section (6), and the arc diameter of the first arc section (5) is smaller than the arc diameter of the second arc section (6).

5. A pair of cable shears according to claim 1, 2 or 3, wherein the cutting surface (14) is parallel to the axial extension of the worm gear (11).

6. A cable cutter as claimed in claim 1, 2 or 3, characterized in that the cutting surface (14) has a cutting depth in the transverse direction which is smaller than the width of the worm wheel (11).

7. A cable cutter according to claim 1, 2 or 3, wherein the plane of the smallest distance between the cutting surface (14) and the axis of the worm wheel (11) is the centre of symmetry of the worm wheel (11).

8. The cable shears according to claim 1, 2 or 3, wherein the movable blade (3) and the fixed blade (2) are hinged through a hinge structure, the hinge structure comprises an adjusting sleeve (17) arranged on the fixed blade (2) and an inserting shaft concentrically inserted in the adjusting sleeve (17), the adjusting sleeve (17) and the inserting shaft are both cylindrical, the outer diameter of the inserting shaft is matched with the inner diameter of the adjusting sleeve (17), the inserting shaft can concentrically rotate relative to the adjusting sleeve (17), the fixed blade (2) is provided with a movable groove (20) for inserting the adjusting sleeve (17), the movable groove (20) penetrates through the fixed blade (2), the groove width of the movable groove (20) is matched with the outer diameter of the adjusting sleeve (17), the movable groove (20) extends along the direction of a connecting line between the center of the adjusting sleeve (17) and the center of the rotating shaft (9), and the connecting line of the movable groove (20) and the symmetrical center of the movable groove (20) coincide, one end of the inserting shaft is provided with a stop part (18), an external thread is further arranged on the inserting shaft, the other end of the inserting shaft sequentially penetrates through the movable blade (3) and the adjusting sleeve (17) and then is connected with a first nut through a thread, and the hinge structure further comprises a locking structure for fixing the adjusting sleeve (17).

9. A pair of cable shears as claimed in claim 8, wherein the locking structure comprises a tooth head (19) arranged at one end of the adjusting sleeve (17), the tooth head (19) is circular and concentric with the adjusting sleeve (17), a plurality of engaging teeth are arranged on the periphery of the tooth head (19), the plurality of engaging teeth are uniformly arranged at intervals in sequence along the circumferential direction of the tooth head (19), the side surface of the fixed blade (2) jointed with the movable blade (3) is provided with an inward concave tooth socket (21), the movable groove (20) is located in the tooth groove (21), the tooth groove (21) extends along the extending direction of the movable groove (20), the tooth head (19) is embedded in the tooth groove (21), inner teeth (22) meshed with the tooth head (19) are arranged on the inner wall of one side of the tooth groove (21), external threads are further arranged on the adjusting sleeve (17), and the other end of the adjusting sleeve (17) is connected with a second nut through threads after penetrating through the movable groove (20).