CN209774717U - Rotary telescopic portable knife - Google Patents
Rotary telescopic portable knife Download PDFInfo
- Publication number
- CN209774717U CN209774717U CN201920348386.3U CN201920348386U CN209774717U CN 209774717 U CN209774717 U CN 209774717U CN 201920348386 U CN201920348386 U CN 201920348386U CN 209774717 U CN209774717 U CN 209774717U
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- cylindrical handle
- screw
- knife
- screw rod
- nut
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Abstract
The utility model discloses a rotary telescopic portable knife, through setting up the tube-shape handle, be provided with the screw rod in the tube-shape handle, there is the clearance between the screw thread surface of screw rod and the tube-shape handle internal surface, one end of sword piece is fixed on the nut, nut and screw thread connection, when not needing to use the knife, the sword piece is located the clearance between the screw thread surface of screw rod and the tube-shape handle internal surface, whole sword piece all is located the tube-shape handle, when needing to use the knife, the screw rod is rotated, make the nut move back and forth along the screw rod, drive the sword piece and stretch out from the tube-shape handle, can use; when not using the knife, contract whole sword blade soon in the tube-shape handle, not only make things convenient for the carrying of cutter, reduced the length of whole knife moreover, be convenient for accomodate, satisfy the operation requirement.
Description
Technical Field
The utility model relates to a flexible portable knife of rotation type.
Background
The existing cutter generally comprises a cutter handle and a cutting edge arranged on the cutter handle, the cutting edge is sharp, the cutter is inconvenient to carry, and even if part of the cutter is provided with a cutter sleeve to cover the cutting edge, the total length of the whole cutter (the total length of the cutter is the length of the cutter handle and the cutting edge) is longer, so that the cutter occupies a larger space and cannot meet the requirement.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
An object of the utility model is to provide a flexible portable knife of rotation type aims at solving current cutter cutting edge and is sharp, and the total length that leads to the inconvenient carrying of cutter and cutter is longer for the cutter is more accounts for local problem.
The technical scheme of the utility model as follows: a rotary telescopic portable knife comprises a cylindrical handle, a screw, a nut, a blade and a limiting structure, wherein the screw is arranged in the cylindrical handle, a gap for accommodating the blade is formed between the threaded surface of the screw and the inner surface of the cylindrical handle, the length direction of the screw is parallel to the length direction of the cylindrical handle, the nut is in threaded connection with the screw, and one end of the blade is fixed on the nut; in the process of rotating the screw, the limiting structure limits the nut and the blade to move back and forth along the screw; the screw rod is rotated to enable the nut to move back and forth along the screw rod, and the other end of the blade is driven to extend out of the cylindrical handle or to be completely retracted into the cylindrical handle.
The rotary telescopic portable knife is characterized in that the limiting structure adopts a cover body, the cover body is fixedly covered at one end of the cylindrical handle, a through hole matched with the knife blade is formed in the cover body, the screw rod is rotated to enable the nut to move along the screw rod, and the other end of the knife blade is driven to penetrate through the through hole and extend out of the cylindrical handle.
The rotary telescopic portable knife is characterized in that after the other end of the knife blade passes through the through hole and is completely retracted into the cylindrical handle from the outside of the cylindrical handle, the end part of the other end of the knife blade is kept inserted into the through hole.
The rotary telescopic portable knife is characterized in that one end of the knife blade is fixed on the nut through welding.
The rotary telescopic portable knife is characterized in that the screw rod is a T-shaped screw rod, and the nut is a T-shaped nut.
The rotary telescopic portable knife is characterized in that a knob is arranged at the end of the screw rod, and the knob is rotated to drive the screw rod to rotate.
The rotary telescopic portable knife is characterized in that the knob is in interference press fit with the end part of the screw rod.
The rotary telescopic portable knife is characterized in that one end of the screw penetrates through the other end of the cylindrical handle and extends out of the cylindrical handle to be connected with the knob, a first spring groove is formed in the end of the other end of the cylindrical handle, a second spring groove is formed in one end of the knob, which is connected with the screw, a spring is sleeved at one end of the screw and located between the cylindrical handle and the knob, one end of the spring is located in the first spring groove, and one end of the spring is located in the second spring groove.
The rotary telescopic portable knife is characterized in that the cylindrical handle is made of an aluminum material.
The rotary telescopic portable knife is characterized in that protective pressing sheets are arranged at two ends of the spring.
The utility model has the advantages that: the utility model provides a rotary telescopic portable knife, through setting up the tube-shape handle, be provided with the screw rod in the tube-shape handle, there is the clearance between the screw thread surface of screw rod and the tube-shape handle internal surface, the one end of sword piece is fixed on the nut, nut and screw thread connection, when need not use the knife, the sword piece is located the clearance between the screw thread surface of screw rod and the tube-shape handle internal surface, whole sword piece all is located the tube-shape handle, when need use the knife, the screw rod is rotated, make the nut move back and forth along the screw rod, drive the sword piece and stretch out from the tube-shape handle, can use; when not using the knife, contract whole sword blade soon in the tube-shape handle, not only make things convenient for the carrying of cutter, reduced the length of whole knife moreover, be convenient for accomodate, satisfy the operation requirement.
Drawings
Fig. 1 is a schematic structural view of the rotary type retractable portable knife of the present invention.
Fig. 2 is a front view of the rotary type retractable pocket knife of the present invention.
Fig. 3 is a sectional view of fig. 2B-B according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention will be described in further detail below with reference to the accompanying drawings and examples.
As shown in fig. 1 to 3, a rotary telescopic pocket knife comprises a cylindrical handle 1, a screw 2, a nut 3, a blade 4 and a limiting structure, wherein the screw 2 is arranged in the cylindrical handle 1, a gap for accommodating the blade 4 is formed between the thread surface of the screw 2 and the inner surface of the cylindrical handle 1, the length direction of the screw 2 is parallel to the length direction of the cylindrical handle 1, the nut 3 is in threaded connection with the screw 2, and one end of the blade 4 is fixed on the nut 3; in the process of rotating the screw rod 2, the limiting structure limits the nut 3 and the blade 4 to move back and forth along the screw rod 2; when the rotary telescopic portable knife needs to be used, the screw rod 2 is rotated, the nut 3 moves along the screw rod 2, and the other end of the knife blade 4 is driven to extend out of the cylindrical handle 1 from the inside of the cylindrical handle 1, so that the portable knife can be used; when the rotary telescopic portable knife is not needed, the screw rod 2 is rotated reversely, the nut 3 moves reversely along the screw rod 2, and the other end of the knife blade 4 is driven to be completely retracted into the cylindrical handle 1 from the outside of the cylindrical handle 1.
Specifically, the limiting structure adopts a cover body 5, the cover body 5 is fixedly covered at one end of the cylindrical handle 1, a through hole matched with the blade piece 4 is formed in the cover body 5, when the rotary telescopic portable knife needs to be used, the screw rod 2 is rotated, the nut 3 moves along the screw rod 2, and the other end of the blade piece 4 is driven to penetrate through the through hole and extend out of the cylindrical handle 1 from the inside of the cylindrical handle 1.
Further, if the length of the cover body 5 along the length direction of the screw 2 is insufficient, after the other end of the blade 4 passes through the through hole and is completely retracted from the outside of the cylindrical handle 1 into the cylindrical handle 1, the other end of the blade 4 may be separated from the through hole, if the position is slightly changed or the parts themselves deform, when the other end of the blade 4 needs to be extended out of the cylindrical handle 1 for use next time, the other end of the blade 4 may not pass through the through hole accurately, which affects the use of the rotary type retractable pocket knife, in order to solve the problem, the cover body 5 has a certain length along the length direction of the screw 2, and after the other end of the blade 4 passes through the through hole and is completely retracted into the cylindrical handle 1 from the outside of the cylindrical handle 1, the other end of the blade 4 is kept inserted into the through hole.
Further, for convenience of processing, one end of the blade 4 is fixed to the nut 3 by welding.
In this embodiment, the screw 2 is a T-shaped screw, and the nut 3 is a T-shaped nut.
In order to rotate the screw rod 2 conveniently, a knob 6 is arranged at the end part of the screw rod 2, and the knob 6 is rotated to drive the screw rod 2 to rotate.
For convenience of installation, the knob 6 is in interference press fit with the end part of the screw rod 2, a glue layer is coated on the end part of the screw rod 2, and the end part of the screw rod 2 is directly pressed into the installation groove of the knob 6; therefore, the screw connection between the end part of the screw rod 2 and the mounting groove of the knob 6 can be replaced, the thread machining is not needed, the machining process is simplified, and the operation is convenient and simple.
When the rotary type telescopic portable knife is not needed, the other end of the knife blade 4 is completely retracted into the cylindrical handle 1, so that the knife blade 4 is prevented from being cut, however, when an external force is accidentally touched with the knob 6 (when the rotary type telescopic portable knife is put in a pocket, the knob 6 is mistakenly rotated due to the friction of clothes), the knob 6 is also likely to rotate to drive the knife blade 4 to extend out, so that the cut is caused, in order to solve the problem, one end part of the screw rod 2 penetrates through the other end of the cylindrical handle 1 and extends out of the cylindrical handle 1 to be connected with the knob 6, the other end part of the cylindrical handle 1 is provided with a first spring groove, one end of the knob 6 connected with the screw rod 2 is provided with a second spring groove, one end part of the screw rod 2 is sleeved with a spring 7, the spring 7 is positioned between the cylindrical handle 1 and the knob 6, one end of the spring 7, one end of the spring 7 is positioned in the second spring groove; when the knob 6 is rotated, the spring 7 has a tendency of being compressed, so when the knob 6 is required to be rotated, the compression tendency of the spring 7 must be overcome firstly, the common external force mistaken collision is small, the compression tendency of the spring 7 cannot be overcome, and the problem caused by the external force mistaken collision is solved.
In this embodiment, the tubular handle 1 is made of aluminum, so that the tubular handle 1 is not easy to rust, and the weight of the rotary telescopic portable knife is reduced.
Because the spring 7 is made of steel material, the aluminum tubular handle 1 may be crushed during the compression of the spring 7, and in order to solve the problem, aluminum pressing sheets are arranged at two ends of the spring 7, and when the spring 7 is compressed, two ends of the spring 7 are directly pressed on the aluminum pressing sheets to protect the aluminum tubular handle 1 from being crushed.
Specifically, the tubular handle 1 may be in various shapes according to actual needs, such as a cylindrical handle, a square tubular handle, a triangular tubular handle, and the like, and all shapes are within the protection scope of the present technical solution. The blade 4 can also be in various shapes according to actual needs, such as an arc sheet shown in fig. 1, a straight sheet or other shapes, as long as the blade 4 can extend out of the cylindrical handle 1 when in use and can be completely retracted into the cylindrical handle 1 when not in use.
In the technical scheme, by arranging the cylindrical handle 1, the screw rod 2 is arranged in the cylindrical handle 1, a gap exists between the threaded surface of the screw rod 2 and the inner surface of the cylindrical handle 1, one end of the knife blade 4 is fixed on the nut, the nut 3 is in threaded connection with the screw rod 2, when a knife is not needed, the knife blade 4 is positioned in the gap between the threaded surface of the screw rod 2 and the inner surface of the cylindrical handle 1, the whole knife blade 4 is positioned in the cylindrical handle 1, when the knife is needed, the screw rod 2 is rotated to enable the nut 3 to move back and forth along the screw rod 2, and the knife blade 4 is driven to extend out of the cylindrical handle 1 to be used; when not using the knife, contract whole sword blade 4 soon in tube-shape handle 1, not only make things convenient for the carrying of cutter, reduced the length of whole knife moreover, be convenient for accomodate, satisfy the operation requirement.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A rotary telescopic portable knife is characterized by comprising a cylindrical handle, a screw rod, a nut, a knife blade and a limiting structure, wherein the screw rod is arranged in the cylindrical handle, a gap for accommodating the knife blade is formed between the threaded surface of the screw rod and the inner surface of the cylindrical handle, the length direction of the screw rod is parallel to the length direction of the cylindrical handle, the nut is in threaded connection with the screw rod, and one end of the knife blade is fixed on the nut; in the process of rotating the screw, the limiting structure limits the nut and the blade to move back and forth along the screw; the screw rod is rotated to enable the nut to move back and forth along the screw rod, and the other end of the blade is driven to extend out of the cylindrical handle or to be completely retracted into the cylindrical handle.
2. The rotary retractable pocket knife as claimed in claim 1, wherein the restriction structure is a cover, the cover is fixedly attached to one end of the cylindrical handle, a through hole is formed in the cover to fit the blade, and the nut is moved along the screw by rotating the screw to drive the other end of the blade to pass through the through hole and extend from the inside of the cylindrical handle to the outside of the cylindrical handle.
3. The rotary retractable pocket knife of claim 2, wherein the end of the other end of the blade remains inserted into the through hole after the other end of the blade is completely retracted from outside the cylindrical handle into the cylindrical handle through the through hole.
4. The rotary retractable pocket knife of claim 1, wherein one end of said blade is secured to a nut by welding.
5. The rotary retractable pocket knife of claim 1, wherein the screw is a T-shaped screw and the nut is a T-shaped nut.
6. A rotary retractable pocket knife as in claim 1 wherein a knob is provided at the end of the screw to rotate the screw.
7. The rotary retractable pocket knife of claim 6, wherein the knob is press fit over the end of the screw.
8. The rotary retractable pocket knife as claimed in claim 6, wherein the screw has one end penetrating the other end of the cylindrical handle and extending outside the cylindrical handle to be connected to the knob, a first spring groove is formed in the other end of the cylindrical handle, a second spring groove is formed in the end of the knob connected to the screw, a spring is fitted over the one end of the screw, the spring is located between the cylindrical handle and the knob, one end of the spring is located in the first spring groove, and the other end of the spring is located in the second spring groove.
9. A rotary retractable pocket knife as claimed in any one of claims 1 to 8 in which the cylindrical handle is of aluminium.
10. A rotary retractable pocket knife as claimed in claim 8 in which protective tabs are provided at both ends of the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348386.3U CN209774717U (en) | 2019-03-19 | 2019-03-19 | Rotary telescopic portable knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920348386.3U CN209774717U (en) | 2019-03-19 | 2019-03-19 | Rotary telescopic portable knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209774717U true CN209774717U (en) | 2019-12-13 |
Family
ID=68798372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920348386.3U Active CN209774717U (en) | 2019-03-19 | 2019-03-19 | Rotary telescopic portable knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209774717U (en) |
-
2019
- 2019-03-19 CN CN201920348386.3U patent/CN209774717U/en active Active
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