CN215471290U - Quick-change blade type pipe cutter - Google Patents
Quick-change blade type pipe cutter Download PDFInfo
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- CN215471290U CN215471290U CN202121366938.7U CN202121366938U CN215471290U CN 215471290 U CN215471290 U CN 215471290U CN 202121366938 U CN202121366938 U CN 202121366938U CN 215471290 U CN215471290 U CN 215471290U
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- blade
- shaft section
- quick
- pressing piece
- hole
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Abstract
The utility model discloses a quick-change blade type pipe cutter, which belongs to a manual cutting tool, wherein a blade of the traditional pipe cutter is fixed at the front end of a second grab handle and is inconvenient to replace. Therefore, the blade can be pulled out and a new blade can be inserted by pressing the pressing piece, and the quick change of the blade is realized.
Description
Technical Field
The utility model belongs to a manual cutting tool, and particularly relates to a quick-change blade type pipe cutter.
Background
The pipe cutter comprises a first grab handle and a second grab handle which are connected through a pivot, a pipe restraint part extends out of the front end of the first grab handle, a blade is assembled at the front end of the second grab handle, the pipe is placed in the pipe restraint part, the first grab handle and the second grab handle are relatively held, and the blade is close to the pipe restraint part like scissors to cut the pipe and cut off the pipe. The blade of the existing pipe cutter is generally fixed at the front end of the second grab handle and is inconvenient to replace.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems and provides a quick-change blade type pipe cutter, which aims to overcome the defect that the blade of the existing pipe cutter is fixed at the front end of a second grab handle and is inconvenient to replace.
In order to achieve the above object, the present invention provides a quick-change blade type tube cutter, including a first grip and a second grip connected by a pivot, wherein a tube restraint part extends from a front end of the first grip, and a blade is mounted on a front end of the second grip, the quick-change blade type tube cutter is characterized in that: the blade is inserted in the front end of the second grab handle, the blade is provided with an assembling through hole, the pivot is inserted in the assembling through hole by the elasticity of the elastic element to realize the assembly of the blade, the pivot is also linked with a pressing piece, and the pressing piece is pressed to overcome the elasticity of the spring to enable the pivot to be separated from the assembling through hole so as to realize the disassembly of the blade.
As a preferable technical means: the front end of the second grab handle is provided with a reinforcing pin, and the end part or/and the back part of the blade is/are leaned on the reinforcing pin.
As a preferable technical means: the pivot comprises a first shaft section and a second shaft section which are coaxially arranged, the inner end of the first shaft section is in contact with the inner end of the second shaft section, the first shaft section is inserted into the assembling through hole by means of the elasticity of a first elastic element to realize the assembling of the blade, the second shaft section is fixedly arranged on the pressing piece, and the pressing piece is pressed to enable the second shaft section to axially push the first shaft section to be separated from the assembling through hole to realize the disassembling of the blade.
As a preferable technical means: the inner end of the first shaft section or/and the inner end of the second shaft section are/is in a ball head shape.
As a preferable technical means: one end of the pressing piece is connected with the pin shaft so that the pressing piece can swing, and the other end of the pressing piece is limited by the flange.
As a preferable technical means: the pressing piece is acted with a second elastic element.
As a preferable technical means: the pivot comprises a third shaft section, the third shaft section is fixedly arranged on a connecting piece, the connecting piece and the pressing piece are connected together through a connecting rod, the third shaft section is inserted into the assembling through hole by means of the elasticity of a third elastic element so as to realize the assembling of the blade, and the pressing piece is pressed to enable the connecting piece to drive the third shaft section to be separated from the assembling through hole so as to realize the disassembling of the blade.
As a preferable technical means: the pivot comprises a fourth shaft section which is coaxially arranged with the third shaft section, the fourth shaft section is fixedly arranged on the pressing piece, and a gap for the blade to pass through is kept between the inner end of the third shaft section and the inner end of the fourth shaft section.
As a preferable technical means: the third elastic element acts on the pressing piece.
As a preferable technical means: the first grab handle or the second grab handle is provided with an arc-shaped hole which takes the pivot as the center, and the connecting rod penetrates through the arc-shaped hole.
The blade is inserted into the front end of the second grab handle, the blade is provided with an assembling through hole, the pivot is inserted into the assembling through hole by virtue of the elasticity of the elastic element to realize the assembly of the blade, the pivot is also linked with a pressing piece, and the pressing piece is pressed to overcome the elasticity of the spring to enable the pivot to be separated from the assembling through hole so as to realize the disassembly of the blade. Therefore, the blade can be pulled out and a new blade can be inserted by pressing the pressing piece, and the quick change of the blade is realized.
Drawings
Fig. 1 is an isometric view of an embodiment 1 of the quick-change blade tube cutter of the present invention;
fig. 2 is a schematic side elevational view of the quick-change blade type tube cutter shown in fig. 1;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
FIG. 5 is a rear view of FIG. 2;
FIG. 6 is a sectional view taken along line B-B of FIG. 5;
FIG. 7 is an exploded view of the pivot shaft and the pressing member according to embodiment 1;
FIG. 8 is a schematic view of another perspective of FIG. 7;
fig. 9 is an isometric view of an embodiment 2 of the quick-change blade tube cutter of the present invention;
fig. 10 is a schematic orthographic view of one side of the quick-change blade tube cutter of fig. 9;
FIG. 11 is a cross-sectional view taken along line C-C of FIG. 10;
FIG. 12 is an exploded view of the pivot shaft and the pressing member according to embodiment 2;
FIG. 13 is a schematic view from another perspective of FIG. 12;
the reference numbers in the figures illustrate:
100 pivots, 101 first shaft segments, 102 second shaft segments, 103 first elastic elements, 104 third shaft segments, 105 fourth shaft segments, 106 gaps;
200 a first grab handle, 201 a pipe constraint part, 202 a through hole, 203 a nut and 204 a flange;
300 second grab handle, 301 first reinforcement pin, 302 second reinforcement pin, 303 arc hole;
400 blades, 401 assembling through holes and 402 clamping grooves;
500 expanding the spring;
600 latch hook;
700 pressing piece, 701 pin shaft, 702 second elastic element, 703 connecting piece, 704 connecting rod and 705 third elastic element.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Example 1
As shown in fig. 1 to 8, the quick-change blade type pipe cutter comprises a first grip handle 200 and a second grip handle 300 connected via a pivot 100, wherein the front end of the first grip handle extends out of a groove-like pipe restraint portion 201, and the front end of the second grip handle is provided with a blade 400 for cutting and severing a pipe by placing the pipe in the pipe restraint portion and holding the first grip handle and the second grip handle relatively to each other so that the blade approaches the pipe restraint portion like a pair of scissors.
In order to facilitate the first handle and the second handle to be opened, the opening spring 500 is supported at the time of the first handle and the second handle, when the first handle and the second handle are released, the first handle and the second handle can be opened by the opening spring, so that the blade and the pipe are constrained and expanded, and the cut pipe is placed on the pipe constraint part.
In the storage state, in order to prevent the cutting knife from being spread out and occupying a large position as shown in the drawing, a lock hook 600 is disposed at the rear of the first grip, and the second grip can be locked at a position close to the first grip by the lock hook.
In this embodiment, a through hole 202 is formed in the first handle 200 adjacent to the tube constraining portion, and the second handle 300 is inserted into the through hole and connected to the intersection of the first handle and the second handle by a pivot 100, so as to realize the pivot connection between the first handle and the second handle, and to make the first handle and the second handle uniformly stressed when cutting the tube.
The first and second handles 200 and 300 are numbered only for naming the handles, and do not represent a sequence. In view of the manner of operation of cutting the pipe, the first grip and the second grip may be named interchangeably or the pipe restraint and the blade may be indexed.
To facilitate the replacement of the blade, a blade 400 is inserted into the front end of the second grip handle 300, and the end of the blade is provided with an assembly through-hole 401 so that the pivot 100 can be inserted into the assembly through-hole to assemble the blade.
In this embodiment, the structure described earlier herein is the same as that of embodiment 2, and will be omitted when describing embodiment 2.
In this embodiment, the pivot 100 comprises a first shaft segment 101 and a second shaft segment 102 arranged coaxially.
As shown in fig. 6, the right side of the first handle 200 is tightly fitted with the nut 203 through threads, the first shaft section 101 can move axially relative to the nut 203, the first handle 200, and the second handle 300, and the nut 203 axially presses the first elastic element 103 on the first shaft section 101, and the first shaft section 101 is inserted into the assembly through hole 401 by the elasticity of the first elastic element 103 to realize the assembly of the blade.
The pressing member 700 is disposed on the left side of the first grip 200 shown in fig. 6, one end of the pressing member 700 is connected to the first grip 200 by a pin 701 so that the pressing member can swing, and the other end of the pressing member 700 is restricted by a rib 204 provided on the first grip. The second shaft section 102 is fixedly arranged on the pressing member 700, and the inner end of the first shaft section 101 is in contact with the inner end of the second shaft section 102. Pressing the pressing member 700 causes the second shaft segment 102 to axially push the first shaft segment 101 out of the assembly through hole to achieve the disassembly of the blade.
Since the inner end of the first shaft section is in contact with the inner end of the second shaft section, the inner end of the first shaft section 101 is made into a ball head shape, so that when the pressing piece is pressed to make the first shaft section come out of the assembling through hole, the blade can be conveniently pulled out. In specific implementation, the inner end of the second shaft section can be made into a ball head shape, or the inner end of the first shaft section and the inner end of the second shaft section are both made into a ball head shape.
In order to facilitate the restoration after the pressing member is pressed, a second elastic element 702 is arranged between the pressing member and the first handle.
As shown in fig. 4, the front end of the second handle 300 is provided with a first reinforcing pin 301 and a second reinforcing pin 302, the end of the blade 400 is provided with a clamping groove 402, the clamping groove 402 is clamped on the first reinforcing pin 301, and the back of the blade 400 is leaned on the second reinforcing pin 302, so that the supporting capability of the second handle to the blade is increased, and the blade is prevented from damaging the second handle when cutting a pipe. In particular, when the second handle is made of plastic material, the reinforcing pin made of metal can obviously increase the supporting capacity of the second handle to the blade.
The pipe cutter of this embodiment, as shown in fig. 1 to 8, is in a state where the blade is fitted to the front end of the second grip. When the blade is to be removed, the pressing member 700 is pressed to push the second shaft section 102 axially to push the first shaft section 101 to be removed from the assembly through hole 401, and when the ball-shaped inner end of the first shaft section corresponds to the assembly through hole 401 (the position can be designed to press the pressing member to the limit position), the blade is removed, the first shaft section is forced to overcome the elastic force of the first elastic element by the force of the blade removal to form a gap with the second shaft section, and the blade can be removed from the gap. After that, the blade is turned around or a new blade is inserted into the front end of the second grab handle when the pressing piece is pressed down, the inserting force of the blade also forces the first shaft section to overcome the elastic force of the first elastic element and generate a gap between the second shaft section, the blade can be inserted in place from the gap, then the pressing piece is released, the first shaft section can be inserted into the assembling through hole of the blade after the elastic force of the first elastic element is restored, and the installation of the blade is realized. As described above, the blade is extracted from the mouthpiece and inserted into the mouthpiece by simply pressing the pressing member, thereby achieving quick replacement of the blade.
Example 2
As shown in fig. 9 to 13, the structure of the present invention is the same as that of embodiment 1, and the same structure is clear from embodiment 1 and will not be described herein. The differences of this embodiment from embodiment 1 are explained in detail below.
In this embodiment, the pivot 100 includes a third shaft segment 104, the third shaft segment 104 is fixedly disposed on a connecting member 703, the connecting member 703 is axially movably disposed on the right side of the first handle 200 shown in fig. 11, the pressing member 700 is axially movably disposed on the left side of the first handle 200 shown in fig. 11, the connecting member 703 and the pressing member 700 are connected together by a connecting rod 704, a third elastic element 705 is disposed between the pressing member 7000 and the first handle 200, the third shaft segment 104 is inserted into the assembly through hole 401 by the elastic force of the third elastic element 705 to assemble the blade, and the connecting member is removed from the assembly through hole with the third shaft segment by pressing the pressing member to disassemble the blade.
In order to increase the strength of the pivotal connection of the first and second grip handle, the pivot comprises a fourth shaft section 105 arranged coaxially with the third shaft section 104, which fourth shaft section 105 also effects the pivotal connection of the first and second grip handle. The fourth shaft section 105 is fixedly arranged on the pressing member 700, and a gap 106 for the blade to pass through is kept between the inner end of the third shaft section and the inner end of the fourth shaft section.
In order to increase the strength of the second handle, the front end of the second handle is configured to have a larger outline, so that the second handle is provided with an arc-shaped hole 303 taking the pivot as the center, and the connecting rod 704 penetrates through the arc-shaped hole 303 without obstructing the relative movement of the first handle and the second handle.
The pipe cutter of this embodiment is, as shown in fig. 9 to 13, in a state where the blade is fitted to the front end of the second grip. When the blade is to be removed, the pressing member 700 is pressed rightward from the state shown in fig. 11, and the pressing member directly drives the fourth shaft 104 segment and drives the third shaft segment 104 to move axially rightward through the connecting rod and the connecting member, so that the third shaft segment is separated from the assembly through hole, and the blade can be removed when the third shaft segment is separated from the assembly through hole and the gap between the third shaft segment and the fourth shaft segment corresponds to the assembly through hole of the blade (the position can be designed to press the pressing member to a limit position). After that, the blade is turned around or a new blade is inserted into the front end of the second grab handle when the pressing piece is pressed down, the blade can be inserted in place by means of the gap between the third shaft section and the fourth shaft section, then the pressing piece is released, and the third shaft section can be inserted into the assembling through hole of the blade by means of elastic resetting of the third elastic element, so that the blade can be installed. As described above, the blade is extracted from the mouthpiece and inserted into the mouthpiece by simply pressing the pressing member, thereby achieving quick replacement of the blade.
Claims (10)
1. Quick change blade formula pipe cutting knife includes first grab handle and second grab handle through the pivot connection, the front end of first grab handle extends out the pipe restraint portion, the front end assembly blade of second grab handle, characterized by: the blade is inserted in the front end of the second grab handle, the blade is provided with an assembling through hole, the pivot is inserted in the assembling through hole by the elasticity of the elastic element to realize the assembly of the blade, the pivot is also linked with a pressing piece, and the pressing piece is pressed to overcome the elasticity of the spring to enable the pivot to be separated from the assembling through hole so as to realize the disassembly of the blade.
2. The quick-change blade type tube cutter as set forth in claim 1, wherein: the front end of the second grab handle is provided with a reinforcing pin, and the end part or/and the back part of the blade is/are leaned on the reinforcing pin.
3. The quick-change blade type tube cutter as set forth in claim 1, wherein: the pivot comprises a first shaft section and a second shaft section which are coaxially arranged, the inner end of the first shaft section is in contact with the inner end of the second shaft section, the first shaft section is inserted into the assembling through hole by means of the elasticity of a first elastic element to realize the assembling of the blade, the second shaft section is fixedly arranged on the pressing piece, and the pressing piece is pressed to enable the second shaft section to axially push the first shaft section to be separated from the assembling through hole to realize the disassembling of the blade.
4. The quick-change blade type tube cutter as set forth in claim 3, wherein: the inner end of the first shaft section or/and the inner end of the second shaft section are/is in a ball head shape.
5. The quick-change blade type tube cutter as set forth in claim 3, wherein: one end of the pressing piece is connected with the pin shaft so that the pressing piece can swing, and the other end of the pressing piece is limited by the flange.
6. The quick-change blade type tube cutter as set forth in claim 4, wherein: the pressing piece is acted with a second elastic element.
7. The quick-change blade type tube cutter as set forth in claim 1, wherein: the pivot comprises a third shaft section, the third shaft section is fixedly arranged on a connecting piece, the connecting piece and the pressing piece are connected together through a connecting rod, the third shaft section is inserted into the assembling through hole by means of the elasticity of a third elastic element so as to realize the assembling of the blade, and the pressing piece is pressed to enable the connecting piece to drive the third shaft section to be separated from the assembling through hole so as to realize the disassembling of the blade.
8. The quick-change blade type tube cutter as set forth in claim 7, wherein: the pivot comprises a fourth shaft section which is coaxially arranged with the third shaft section, the fourth shaft section is fixedly arranged on the pressing piece, and a gap for the blade to pass through is kept between the inner end of the third shaft section and the inner end of the fourth shaft section.
9. The quick-change blade type tube cutter as set forth in claim 7, wherein: the third elastic element acts on the pressing piece.
10. The quick-change blade type tube cutter as set forth in claim 7, wherein: the second grab handle is provided with an arc-shaped hole which takes the pivot as the center, and the connecting rod penetrates through the arc-shaped hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121366938.7U CN215471290U (en) | 2021-06-18 | 2021-06-18 | Quick-change blade type pipe cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121366938.7U CN215471290U (en) | 2021-06-18 | 2021-06-18 | Quick-change blade type pipe cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215471290U true CN215471290U (en) | 2022-01-11 |
Family
ID=79720313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121366938.7U Active CN215471290U (en) | 2021-06-18 | 2021-06-18 | Quick-change blade type pipe cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215471290U (en) |
-
2021
- 2021-06-18 CN CN202121366938.7U patent/CN215471290U/en active Active
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| GR01 | Patent grant | ||
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