CN212497871U - Pipe cutter with high fatigue strength and long service life of torsional spring - Google Patents
Pipe cutter with high fatigue strength and long service life of torsional spring Download PDFInfo
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- CN212497871U CN212497871U CN202021297354.4U CN202021297354U CN212497871U CN 212497871 U CN212497871 U CN 212497871U CN 202021297354 U CN202021297354 U CN 202021297354U CN 212497871 U CN212497871 U CN 212497871U
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- torsional spring
- blade
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- long service
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Abstract
The utility model provides a pipe cutter with high torsional spring fatigue strength and long service life, which comprises a shell, a blade and a torsional spring, wherein the blade and the torsional spring are arranged in the shell; the shell is further provided with a symmetrical inwards concave table board, the inwards concave table board is provided with a stopping surface and a positioning groove, the stopping portion abuts against the stopping surface, the end portion of the first connecting portion is provided with a positioning portion, and the positioning portion is arranged in the positioning groove. The utility model relates to a torsional spring fatigue strength is high and long service life's pipe cutting knife, backstop portion on the torsional spring can drive the blade rotation, and is equipped with first connecting portion and second connecting portion on this torsional spring, can produce the elasticity that resets simultaneously, compares in ordinary torsional spring, and its elasticity that resets is stronger, and the connecting portion of two symmetries make the tensile resistance of torsional spring strong, and holistic fatigue life is longer, can avoid the torsional spring to warp after long-time the use, leads to the problem emergence that the blade can't accurately reset.
Description
Technical Field
The utility model relates to a pipe cutting knife technical field especially relates to a torsional spring fatigue strength height and long service life's pipe cutting knife.
Background
The pipe cutter is one of the tools frequently used in piping engineering, and is mainly used for cutting and segmenting a pipe body and connecting pipelines such as electric pipelines, water pipelines, gas pipelines and the like. The traditional and conventional tube cutter structure is mostly provided with two handles which can be mutually abutted, wherein the top end of one handle is provided with a blade, the top end of the other handle is provided with an arc-shaped clamping opening, and a connecting rod, a ratchet piece and a ratchet block are arranged between the two handles. When the user presses the handles, the two handles are closed oppositely through the meshing action between the ratchet sheet body and the ratchet block and the linkage action of the connecting rod, so as to drive the cutting knife to cut the pipe body.
However, the conventional cutter is provided with ratchet sheets, ratchet blocks, connecting rods and the like between handles, so that not only are numerous components and complex combination and labor-consuming operation, but also the conventional pipe cutter is fixed with a tension spring, so that the whole scissor shell needs to be disassembled to disassemble the blade, which brings inconvenience to use.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The to-be-solved technical problem of the utility model is to provide a high and long service life's of torsional spring fatigue strength pipe cutting knife to overcome the problem that the torsional spring can't drive the accurate reset of blade after the pipe cutting knife uses for a long time among the prior art.
(II) technical scheme
In order to solve the technical problems, the utility model provides a pipe cutter with high fatigue strength and long service life of a torsional spring, which comprises a shell and a blade arranged in the shell, wherein the blade can rotate and move in the shell, the torsional spring is also arranged in the shell, the two ends of the torsional spring are spirally formed with a first connecting part and a second connecting part which are annular, a bent stopping part is arranged between the first connecting part and the second connecting part, a clamping groove is formed at one side of the blade close to the tooth part, the stopping part is arranged in the clamping groove, the torsional spring can drive the blade to rotate through the stopping part, a round platform is symmetrically arranged on the shell, the first connecting part and the second connecting part are sleeved on the round platform to keep the positioning of the torsional spring, and the torsional spring is provided with the first connecting part and the second connecting part, the middle stopping part can provide the elasticity required by the blade reset through the first connecting part and the second connecting part together, so that the elasticity of the torsional spring is stronger, the fatigue life of the torsional spring is long, the torsional spring is not easy to deform, and the torsional spring can still reset after being used for a long time, so that the service life of the whole pipe cutting knife is longer; the shell is further provided with a symmetrical inner concave table board, the inner concave table board is provided with a stop surface and a positioning groove, the stop portion is abutted against the stop surface when the blade is in an open state, so that the blade is pushed through the clamping groove to keep the maximum opening angle of the blade, the end portion of the first connecting portion is provided with a positioning portion which is arranged in the positioning groove, the positioning portion limits the position of one end of the torsional spring, the stop portion of the torsional spring generates elasticity after rotating, the blade can be driven to reset, and the elasticity of the torsional spring is limited due to the fact that the positioning portion is arranged on one side, so that the blade cannot be too fast when being opened, the blade is prevented from colliding with the shell, the shell is further provided with a limit stop, the shell is movably connected with a handle, and the handle can drive the blade to be folded, when the blade is folded, the blade can touch the limit stop block, so that the position of the blade is limited, and the reduction of the fatigue life of the torsion spring caused by the excessive contraction of the blade is avoided; the blade with all be equipped with the through-hole on the casing, can with through connecting pieces such as outside bolt and nut the blade is installed in the casing, during the tool changing, only need pull down the casing outside and be used for the location can directly take out the blade along the casing edge of a knife behind the bolt of blade and setting elements such as nut, only need during the dress sword with the blade is put into along the edge of a knife in the casing, will again draw-in groove on the blade is aimed at backstop portion on the torsional spring, it can to screw up outside bolt and nut.
(III) advantageous effects
The utility model relates to a torsional spring fatigue strength is high and long service life's pipe cutting knife, backstop portion through setting up on the torsional spring drives the blade rotation, and the symmetry is equipped with spiral first connecting portion and second connecting portion on this torsional spring, can produce the elasticity that resets simultaneously, compare in ordinary torsional spring, its elasticity that resets is stronger, and the connecting portion of two symmetries make the pull resistance of torsional spring strong, holistic fatigue life is longer, can avoid the torsional spring to warp after long-time the use, the problem that leads to the unable accuracy of blade to reset takes place.
Drawings
FIG. 1 is a perspective view of a pipe cutter of the present invention with high fatigue strength and long service life of the torsion spring;
FIG. 2 is a perspective view of the casing and the torsion spring of the pipe cutter of the present invention with high fatigue strength and long service life;
FIG. 3 is a perspective view of the torsion spring of the pipe cutter of the present invention with high fatigue strength and long service life;
fig. 4 is a perspective view of the utility model of the blade closed state of the pipe cutter with high fatigue strength and long service life.
Wherein: the handle comprises a shell 1, a blade 2, a torsion spring 3, a first connecting part 4, a second connecting part 5, a stop part 6, a circular truncated cone 7, an inwards concave table surface 8, a stop surface 9, a positioning groove 10, a positioning part 11, a clamping groove 12, a limit stop 13, a through hole 14 and a handle 15.
Detailed Description
Referring to fig. 1 to 4, in order to solve the above technical problems, the utility model provides a pipe cutter with high fatigue strength and long service life of a torsion spring, which comprises a casing 1 and a blade 2 installed in the casing 1, referring to fig. 1, wherein the casing 1 and the blade 2 are both provided with a through hole 14, and external connecting pieces such as bolts and nuts are fixed on both sides of the casing 1 after passing through the through hole 14, so as to install the blade 2 in the casing 1, and the blade 2 can rotate in the casing 1 along the through hole 14 as an axis; referring to fig. 2 and 3, a torsion spring 3 is further installed in the housing 1, two ends of the torsion spring 3 are spirally formed with a first connecting portion 4 and a second connecting portion 5 in a ring shape, a bent stopping portion 6 is arranged between the first connecting portion 4 and the second connecting portion 5, one side of the blade 2 close to the tooth portion is concavely formed with a clamping groove 12, the stopping portion 6 is disposed in the clamping groove 12, so that the stopping portion 6 can drive the blade 2 to rotate through the clamping groove 12, the housing 1 is symmetrically provided with a circular truncated cone 7, the first connecting portion 4 and the second connecting portion 5 are both sleeved on the circular truncated cone 7 to achieve positioning of the torsion spring 3, in this embodiment, the torsion spring 3 provides an elastic force required by blade resetting through the first connecting portion 4 and the second connecting portion 5, the stopping portion 6 can compress the first connecting portion 4 and the second connecting portion 5 after rotating along one side, so as to generate an elastic force, because the first connecting portion 4 and, compared with a common torsion spring, the torsion spring 3 has stronger elasticity, and the first connecting part 4 and the second connecting part 5 are connected through the stopping part 6, so that the torsion spring 3 has higher stability and longer overall fatigue life, the torsion spring 3 is not easy to deform after being used for a long time, and the situation that the blade cannot reset due to the failure of the torsion spring can be avoided; still be equipped with the indent mesa 8 of symmetry on casing 1, be equipped with backstop face 9 and constant head tank 10 on this indent mesa 8, backstop portion 6 supports and leans on this backstop face 9, make blade 2 under open mode, backstop portion 6 on the torsional spring 3 promotes blade 2 to the biggest opening angle all the time, the tip of first connecting portion 4 is equipped with location portion 11, location portion 11 is arranged in constant head tank 10, can be fixed torsional spring 3's one end through location portion 11, make backstop portion 6 can compress first connecting portion 4 and second connecting portion 5 when rotatory, thereby produce elasticity.
Referring to fig. 1 and 4, in this embodiment, swing joint has handle 15 on casing 1, but through the angle of handle 15 regulation blade 2, still be equipped with limit stop 13 on casing 1, can support when blade 2 is closed to the maximum angle and lean on limit stop 13, thereby prescribe a limit to the angle of blade 2, avoid torsional spring 3 excessive compression, this pipe cutting knife is when the tool changing, only need to take off the connecting piece of casing 1 both sides, take out inside blade 2 can, during the dress sword, put into blade 2 along the tool entrance department of casing 1, and make the draw-in groove 12 of blade 2 and the backstop portion 6 cooperation of torsional spring 3, the rethread external connecting piece passes behind through-hole 14 with blade 2 location in casing 1.
The utility model relates to a torsional spring fatigue strength is high and long service life's pipe cutting knife, backstop portion through setting up on the torsional spring drives the blade rotation, and the symmetry is equipped with spiral first connecting portion and second connecting portion on this torsional spring, realize the location through the round platform in the casing, this connecting portion can produce the elasticity that resets simultaneously under the drive of backstop portion after the rotatory compression, compare in ordinary torsional spring, its elasticity that resets is stronger, and the connecting portion of two symmetries make the pull resistance of torsional spring strong, holistic fatigue life is longer, can avoid the torsional spring to warp after long-time use, the problem that leads to the unable accuracy of blade to reset takes place.
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 (5)
1. The utility model provides a high and long service life's of torsional spring fatigue strength pipe cutting knife, includes casing (1) and installs blade (2) in casing (1), its characterized in that: a torsion spring (3) is further installed in the shell (1), annular first connecting portions (4) and annular second connecting portions (5) are spirally formed at two ends of the torsion spring (3), a bent stopping portion (6) is arranged between the first connecting portions (4) and the second connecting portions (5), round tables (7) are symmetrically arranged on the shell (1), and the first connecting portions (4) and the second connecting portions (5) are sleeved on the round tables (7); still be equipped with the indent mesa (8) of symmetry on casing (1), be equipped with backstop face (9) and constant head tank (10) on indent mesa (8), backstop portion (6) support and lean on backstop face (9), the tip of first connecting portion (4) is equipped with location portion (11), location portion (11) are arranged in constant head tank (10).
2. The pipe cutter of claim 1 with high fatigue strength and long service life of torsion spring, characterized in that: one side of the blade (2) close to the tooth part is concave inwards to form a clamping groove (12), and the stopping part (6) is arranged in the clamping groove (12).
3. The pipe cutter of claim 1 with high fatigue strength and long service life of torsion spring, characterized in that: and the shell (1) is also provided with a limit stop (13).
4. The pipe cutter of claim 1 with high fatigue strength and long service life of torsion spring, characterized in that: the blade (2) and the shell (1) are both provided with through holes (14).
5. The pipe cutter of claim 1 with high fatigue strength and long service life of torsion spring, characterized in that: the shell (1) is movably connected with a handle (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021297354.4U CN212497871U (en) | 2020-07-06 | 2020-07-06 | Pipe cutter with high fatigue strength and long service life of torsional spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021297354.4U CN212497871U (en) | 2020-07-06 | 2020-07-06 | Pipe cutter with high fatigue strength and long service life of torsional spring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212497871U true CN212497871U (en) | 2021-02-09 |
Family
ID=74433265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021297354.4U Active CN212497871U (en) | 2020-07-06 | 2020-07-06 | Pipe cutter with high fatigue strength and long service life of torsional spring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212497871U (en) |
-
2020
- 2020-07-06 CN CN202021297354.4U patent/CN212497871U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: The utility model relates to a pipe cutter with high fatigue strength and long service life of a torsion spring Effective date of registration: 20211229 Granted publication date: 20210209 Pledgee: Zhejiang Tailong Commercial Bank Co.,Ltd. Ningbo Yuyao sub branch Pledgor: Ningbo Ant Tools Co.,Ltd. Registration number: Y2021330002742 |