CN211806267U

CN211806267U - Pipe cutter

Info

Publication number: CN211806267U
Application number: CN202020434429.2U
Authority: CN
Inventors: 朱金田
Original assignee: Yuyao Jinma Tools Co ltd
Current assignee: Yuyao Jinma Tools Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-10-30
Anticipated expiration: 2030-03-30

Abstract

The utility model provides a pipe cutting knife, which comprises a fixed handle, a movable handle and a cutting blade, wherein the movable handle and the cutting blade are respectively hinged on the fixed handle; one end of the cutting blade is provided with a ratchet part, the end part of the movable handle is hinged with a pawl for driving the ratchet part, the fixed handle is hinged with a locking rod for preventing the ratchet part from rotating, and the ratchet part is annularly provided with a plurality of clamping grooves at equal intervals; the pawl and the locking rod are both U-shaped and respectively comprise a clamping part and a connecting sheet which are matched with the clamping groove, and the connecting sheets are symmetrically arranged on the clamping part; when cutting, the pipe is placed in the limiting groove, the movable handle is rotated for many times, the pawl pushes the ratchet wheel part to rotate for many times, and then the cutting blade is close to the limiting groove to cut off the pipe. The utility model provides a pair of pipe cutting knife has overcome the defect that current pipe cutting knife cutting is hard, the part is fragile, life is short.

Description

Pipe cutter

Technical Field

The utility model relates to a cutting means field especially relates to a pipe cutting knife.

Background

When the pipe is produced, the pipe has a fixed length specification according to transportation requirements and national regulations, but when the pipe is installed and used, the length requirements of the pipe are different due to the complex and diversified use occasions, so that the pipe needs to be cut when being used. The original pipe cutting does not have special cutting tool, mostly directly uses the cutter, but directly cuts with the cutter and wastes time and energy, consequently through people's research, has researched and developed a pipe cutting knife.

The existing pipe cutting knife clamps the pipe by the hand-held force of a user and gradually cuts the pipe; due to the structural limitation, the existing pipe cutter needs great strength to cut, is difficult to cut, wastes time and labor; and the parts of the existing pipe cutter are easy to damage, the service life is short, and the practicability is low.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims to solve the problem that a pipe cutting knife is provided to overcome the defect that current pipe cutting knife cutting is hard, part fragile, life is short.

(II) technical scheme

In order to solve the technical problem, the utility model provides a pipe cutting knife, which comprises a fixed handle, a movable handle and a cutting blade, wherein the movable handle and the cutting blade are respectively hinged on the fixed handle; a ratchet part is arranged at one end of the cutting blade, a pawl used for driving the ratchet part is hinged to the end part of the movable handle, a locking rod used for preventing the ratchet part from rotating is hinged to the fixed handle, and a plurality of clamping grooves are formed in the ratchet part at equal intervals in an annular mode; the pipe can be cut through the matching of the fixed handle and the movable handle, the length of the movable handle cannot be limited by the structure, the movable handle can be arranged to be longer, the pawl is arranged at the end part of the movable handle, the cutting is more labor-saving, and the pipe can be cut more easily. The pawl and the locking rod are both U-shaped and respectively comprise a clamping part and a connecting sheet which are matched with the clamping groove, and the connecting sheets are symmetrically arranged on the clamping part; the equal symmetry of the joint portion of pawl and locking pole is provided with the connection piece, prevents pawl and locking pole fracture, avoids the part to damage increase of service life. A shifting part is arranged at one end, far away from the clamping part, of the connecting piece of the locking rod, and the shifting part is arranged outside the fixed handle; when cutting, the pipe is placed in the limiting groove, the movable handle is rotated for multiple times, the pawl pushes the ratchet wheel part to rotate for multiple times, and then the cutting blade is close to the limiting groove to cut off the pipe.

Furthermore, the fixed handle and the movable handle are both made of steel materials, so that the falling damage is prevented, and the manufacturing cost is saved; a mounting groove is formed in the fixed handle, and the cutting blade is arranged in the mounting groove. The fixed handle comprises an upper handle cover and a lower handle cover, the lower handle cover is fixed on the upper handle cover through screws, the upper handle cover and the lower handle cover are identical in structure, manufacturing is convenient, and manufacturing cost is saved.

Furthermore, the movable handle and the locking rod are hinged to the fixed handle through a pin shaft, and the pawl and the locking rod are located in the movable handle. And a handle part convenient to press is arranged at one end of the movable handle far away from the pawl. The length of the pawl is greater than that of the locking rod, and the pawl is located between the handle portion and the locking rod and close to the locking rod. Cutting blade with install the spring between the lock pole, cutting blade with be provided with the hook hole of the hook spring of being convenient for on the lock pole respectively.

(III) advantageous effects

The utility model provides a pipe cutting knife, can cut the pipe through the cooperation of fixed handle and movable handle, this structure can not restrict the length of movable handle, can set up the movable handle longer and set up the pawl in the movable handle tip, can make the cutting more laborsaving, it is easier to cut the pipe; the locking rod is provided with a shifting part which can be shifted when the locking rod is clamped, so that the cutting blade is prevented from being clamped; the fixed handle and the movable handle are made of steel materials, so that the falling damage is prevented, and the manufacturing cost is saved; connecting pieces are symmetrically arranged at the clamping parts of the pawl and the locking rod, so that the pawl and the locking rod are prevented from being broken, parts are prevented from being damaged, and the service life is prolonged; overcomes the defects of the prior pipe cutter that the cutting is laborious, the parts are easy to damage and the service life is short.

Drawings

FIG. 1 is a perspective view of a pipe cutter of the present invention;

FIG. 2 is an exploded view of a pipe cutter of the present invention;

FIG. 3 is a perspective view of the present invention showing the connection of a pawl, a locking bar and a cutting blade of a cutting knife of a pipe;

FIG. 4 is a perspective view of a pawl of a pipe cutter of the present invention;

FIG. 5 is a perspective view of a locking bar of the pipe cutter of the present invention;

FIG. 6 is an exploded view of a fixing handle of a pipe cutter of the present invention;

the corresponding part names for the various reference numbers in the figures are: 1. fixing a handle; 2. a movable handle; 3. a cutting blade; 4. a pawl; 5. a lock lever; 6. a clamping part; 7. connecting sheets; 8. a pin shaft; 9. a toggle part; 10. a hooking hole; 101. a limiting groove; 102. mounting grooves; 103. an upper handle cover; 104. a lower handle cover; 201. a handle portion; 301. a ratchet portion; 302. a card slot; 303. a cutting edge.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1 to 5, the utility model provides a pipe cutting knife, which comprises a fixed handle 1, a movable handle 2 and a cutting blade 3, wherein the movable handle and the cutting blade are respectively hinged on the fixed handle 1. Referring to fig. 5, the fixed handle 1 includes an upper handle cover 103 and a lower handle cover 104, the lower handle cover 104 is fixed to the upper handle cover 103 by screws, and the upper handle cover 103 and the lower handle cover 104 have the same structure, so that the manufacture is facilitated, and the manufacturing cost is saved. The fixed handle 1 and the movable handle 2 are both made of steel materials; the shell of the existing pipe cutter is made of aluminum, so that the shell is easy to break; the structure is made of steel materials, can effectively prevent the product from being broken, prolongs the practical service life of the product, and can save the manufacturing cost. A mounting groove 102 is provided in the fixed handle 1, a cutting blade 3 is provided in the mounting groove 102, and a cutting edge 303 for cutting a pipe is provided on the cutting blade 3.

Referring to fig. 2 and 3, the end of the fixing handle 1 is provided with a limiting groove 101 corresponding to the cutting blade 3, and the limiting groove 101 is used for placing and limiting the pipe. One end of the cutting blade 3 is provided with a ratchet part 301, the end part of the movable handle 2 is hinged with a pawl 4 for driving the ratchet part 301 to rotate, and the fixed handle 1 is hinged with a locking rod 5 for preventing the ratchet part 301 from rotating. The movable handle 2 and the locking rod 5 are both hinged on the fixed handle 1 through a pin shaft 8, and the pawl 4 and the locking rod 5 are both positioned in the movable handle 2. The movable handle 2 is provided with a handle part 201 which is convenient to press at one end far away from the pawl 4, the length of the pawl 4 is larger than that of the locking rod 5, and the pawl 4 is positioned between the handle part 201 and the locking rod 5 and is close to the locking rod 5. The pipe can be cut through the matching of the fixed handle and the movable handle, the length of the movable handle cannot be limited by the structure, the movable handle can be arranged to be longer, the pawl is arranged at the end part of the movable handle, the cutting is more labor-saving, and the pipe can be cut more easily.

Referring to fig. 4, a plurality of slots 302 are annularly and equally spaced on the ratchet portion 301; the pawl 4 and the locking rod 5 are both U-shaped and respectively comprise a clamping part 6 matched with the clamping groove 302 and a connecting sheet 7, and the connecting sheets 7 are symmetrically arranged on the clamping part 6; the connecting pieces 7 are provided with through holes for the pin shaft to pass through. The equal symmetry of the joint portion of pawl and locking pole is provided with the connection piece, prevents pawl and locking pole fracture, avoids the part to damage increase of service life. A toggle part 9 is arranged at one end, far away from the clamping part 6, of the connecting sheet 7 of the locking rod 5, and the toggle part 9 is arranged outside the fixed handle 1; when the locking pole 5 card was died, can stir stirring portion 9, prevented that cutting blade card from dying, it is more convenient to use. Install the spring between cutting blade 3 and the lock bar 5, the spring is two and the symmetry sets up, is provided with the hook hole 10 of the hook spring of being convenient for on cutting blade 3 and the lock bar 5 respectively, and the spring can make lock bar 5 tightly support and lean on cutting blade 3, and it is better to prevent to turn round the effect.

When cutting, the pipe is placed in the limiting groove 101, the movable handle 2 is rotated towards the direction that the fixed handle 1 approaches, the clamping portion 6 of the pawl 4 is placed in the clamping groove 302 and pushes the ratchet portion 301 to rotate, the locking rod 5 can slide along the clamping groove 302 of the ratchet portion 301, and when the pawl 4 is loosened after being pushed in place for one time, the clamping portion 6 of the locking rod 5 is placed in the clamping groove 302 to prevent the ratchet portion 301 from rotating until the pawl 4 pushes the ratchet portion 301 to rotate again; the ratchet part 301 is pushed to rotate for a plurality of times by the pawl 4, so that the cutting blade 3 approaches the limiting groove 101 to cut off the pipe.

According to the pipe cutting knife provided by the embodiment, the movable handle can be longer by adopting the structure, and the pawl is arranged at the end part of the movable handle, so that the cutting is more labor-saving, and the pipe can be cut more easily; the fixed handle and the movable handle which are made of steel materials, the pawl and the locking rod are respectively provided with two connecting pieces, so that the damage of parts is avoided, and the service life of a product is prolonged; overcomes the defects of the prior pipe cutter that the cutting is laborious, the parts are easy to damage and the service life is short.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A pipe cutting knife is characterized in that: the cutting tool comprises a fixed handle (1), and a movable handle (2) and a cutting blade (3) which are respectively hinged on the fixed handle (1), wherein a limiting groove (101) corresponding to the cutting blade (3) is formed in the end part of the fixed handle (1); a ratchet part (301) is arranged at one end of the cutting blade (3), a pawl (4) used for driving the ratchet part (301) is hinged to the end part of the movable handle (2), a locking rod (5) used for preventing the ratchet part (301) from rotating is hinged to the fixed handle (1), and a plurality of clamping grooves (302) are formed in the ratchet part (301) in an annular shape at equal intervals; the pawl (4) and the locking rod (5) are both U-shaped and respectively comprise a clamping part (6) and a connecting sheet (7) which are matched with the clamping groove (302), and the connecting sheets (7) are symmetrically arranged on the clamping part (6); a toggle part (9) is arranged at one end, far away from the clamping part (6), of the connecting piece (7) of the locking rod (5), and the toggle part (9) is arranged outside the fixed handle (1); when cutting, the pipe is placed in the limiting groove (101), the movable handle (2) is rotated for multiple times, the pawl (4) pushes the pawl part (301) to rotate for multiple times, and then the cutting blade (3) is close to the limiting groove (101) to cut off the pipe.

2. A pipe cutting blade as defined in claim 1, wherein: the fixed handle (1) and the movable handle (2) are both made of steel materials.

3. A pipe cutting blade as defined in claim 1, wherein: a mounting groove (102) is formed in the fixed handle (1), and the cutting blade (3) is arranged in the mounting groove (102).

4. A pipe cutting blade as defined in claim 1, wherein: the fixed handle (1) comprises an upper handle cover (103) and a lower handle cover (104), the lower handle cover (104) is fixed on the upper handle cover (103) through screws, and the upper handle cover (103) and the lower handle cover (104) are identical in structure.

5. A pipe cutting blade as defined in claim 1, wherein: the movable handle (2) and the locking rod (5) are hinged to the fixed handle (1) through a pin shaft (8), and the pawl (4) and the locking rod (5) are located in the movable handle (2).

6. A pipe cutting blade as defined in claim 1, wherein: one end of the movable handle (2) far away from the pawl (4) is provided with a handle part (201) which is convenient to press.

7. A pipe cutting blade as claimed in claim 6, wherein: the length of the pawl (4) is greater than that of the locking rod (5), and the pawl (4) is located between the handle portion (201) and the locking rod (5) and is close to the locking rod (5).

8. A pipe cutting blade as defined in claim 1, wherein: cutting blade (3) with install the spring between lock bar (5), cutting blade (3) with be provided with hook hole (10) of being convenient for the hook spring on lock bar (5) respectively.