CN211941009U

CN211941009U - Art designing knife with easily replaceable blade

Info

Publication number: CN211941009U
Application number: CN202020565305.8U
Authority: CN
Inventors: 何铁雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-16
Filing date: 2020-04-16
Publication date: 2020-11-17
Anticipated expiration: 2030-04-16

Abstract

The utility model relates to an art knife with easily replaced blade, which comprises a knife shell, a blade and a movable push handle, wherein the blade and the movable push handle are arranged in the knife shell, an elastic component is arranged on the movable push handle, one side of the elastic component is in sliding contact with the inner wall of the knife shell, the other side of the elastic component is provided with a limiting column, the blade is sleeved on the limiting column, and the elastic component can be abutted against the inner wall of the knife shell so that the highest point of the limiting column is higher than the side pressure elasticity of the blade; still be provided with loading and unloading point location draw-in groove on the sword shell inner wall, elastic component can be blocked loading and unloading point location draw-in groove when sliding to loading and unloading point location draw-in groove along the sword shell inner wall to when elastic component card goes into loading and unloading point location draw-in groove, the peak of spacing post is less than the blade, and this art designer's sword need not open the rear end cap and can realize changing the blade fast in front end tool opening department.

Description

Art designing knife with easily replaceable blade

Technical Field

The utility model relates to an art designing knife especially relates to an art designing knife of easily changing blade.

Background

The utility knife can conveniently cut office supplies such as paper and the like, and is more popular in offices. However, the existing art designing knife has a defect that the knife shell needs to be disassembled when the blade is replaced, so that the knife is troublesome. The existing art designing blade changing steps are as follows: the rear plug is firstly detached, the push handle is retreated backwards, the old blade on the push handle is taken off, a new blade is replaced, the new blade is pushed into the clamping groove, and the rear plug is finally installed. The whole blade replacing process is complicated, the plug is easy to loosen after the blade is replaced for a plurality of times, and the plug is easy to hurt hands when the plug is detached and stone powder is needed in a laborious period.

Disclosure of Invention

An object of the utility model is to provide an art designing sword of easily changing blade to the art designing sword of solving among the prior art exists and changes the blade process loaded down with trivial details, operates complicacy, and the end cap is not hard up easily and may cause the problem of injury to the adversary.

In order to solve the problem, the utility model relates to an art designing sword of easily changing blade adopts following technical scheme:

an art knife with a blade easy to replace comprises a knife shell, the blade and a movable push handle, wherein the blade and the movable push handle are arranged in the knife shell, an elastic component is arranged on the movable push handle, one side of the elastic component is in sliding contact with the inner wall of the knife shell, a limiting column is arranged on the other side of the elastic component, the blade is sleeved on the limiting column, and the elastic component can be abutted against the inner wall of the knife shell so that the highest point of the limiting column is higher than the lateral pressure elastic force of the blade; still be provided with loading and unloading point location draw-in groove on the sword shell inner wall, elastic component can be blocked into loading and unloading point location draw-in groove when sliding to loading and unloading point location draw-in groove along the sword shell inner wall to when elastic component card goes into loading and unloading point location draw-in groove, the peak of spacing post is less than the blade.

Foretell art designer's sword of easily changing blade, elastic component include the horizontal connecting portion that the integral type is connected and support the portion of sliding, spacing post sets up on horizontal connecting portion, support the portion of sliding and can follow the slip of sword shell inner wall and can block into loading and unloading point positioning slot.

According to the art knife with the easily-replaceable blade, the horizontal connecting portion is linear along the vertical section parallel to the moving direction, and the supporting sliding portion is S-shaped and hooked along the vertical section parallel to the moving direction.

In the art designing knife with the easily replaceable blade, the elastic member is a linear snap spring or a sheet-shaped elastic sheet.

The utility knife with the easily replaceable blade is characterized in that a mounting hole is formed in the blade and close to the rear end of the blade, and the diameter of the mounting hole is larger than that of the limiting column.

The utility knife with the easily replaceable blade has the advantages that the loading and unloading point positioning clamping groove is in a concave arc shape along the vertical section parallel to the moving direction.

The utility knife with the easily replaceable blade is characterized in that the mounting and dismounting point positioning clamping groove is arranged on the inner wall of the knife shell and close to the front end.

The utility knife with the easily replaceable blade is characterized in that the inner wall of the knife shell at the rear end of the loading and unloading point positioning clamping groove is provided with the blocking bump.

The utility model has the advantages as follows:

1. the utility model discloses an art designing sword of easily changing blade need not open the rear end cap and can realize changing the blade fast in front end tool bit department. The prior art knife shell of the art designer knife and the movable push handle are improved, the elastic component and the loading and unloading point positioning clamping groove are additionally arranged, the push handle is pushed forwards to enable the elastic component to slide along the inner wall of the knife shell to be clamped into the loading and unloading point positioning clamping groove, the old blade can automatically separate from the elastic component and then slide out from the knife edge, the new blade can be directly inserted from the front-end knife edge, the operation of the blade replacing process is simple, and time and labor are saved.

2. The elastic component always has the pressure of mutual interference with the inner wall of the knife shell, so that the side pressure also exists between the blade and the elastic component, and the static friction force between the blade and the elastic component is increased. When the blade is used for cutting an object, the probability of the blade shaking back and forth can be reduced to a great extent by means of larger static friction force, and the blade is more stable in cutting and better in use feeling.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a blade in an operating state.

Fig. 2 is a schematic view of the blade at the point of removal.

Fig. 3 is a schematic view of the structure of the blade when it is withdrawn from the front end.

Fig. 4 is a schematic diagram of a deformed structure of the elastic member when the blade is in an operating state.

Fig. 5 is a schematic view of the deformed configuration of the resilient member when the blade reaches the removal point.

Fig. 6 is a schematic structural view of embodiment 2.

The reference numbers in the figures illustrate: 1-knife shell, 2-knife blade, 3-moving push handle, 4-elastic component, 41-horizontal connecting part, 42-supporting sliding part, 5-knife shell inner wall, 6-knife edge, 7-limiting column, 8-loading and unloading point positioning clamping groove, 9-blocking lug, 10-plug and 11-mounting hole.

Detailed Description

In order to make the technical purpose, technical solution and advantageous effects of the present invention clearer, the technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.

Example 1:

an art knife with a replaceable blade, as shown in fig. 1-5, comprises a knife shell 1, a blade 2 mounted in the knife shell 1, and a movable push handle 3, wherein the movable push handle 3 moves back and forth along a slide rail on the knife shell 1 to drive the blade 2 to move back and forth, so that the front end of the blade 2 extends out of a knife edge 6 or is installed back in the knife shell 1. An elastic component 4 is arranged at the front end of the movable push handle 3, one side of the elastic component 4 is in sliding contact with the inner wall of the cutter shell 1 and can move along the inner wall of the cutter shell 1 under the driving of the movable push handle 3, a limiting column 7 is arranged at the other side of the elastic component 4, a mounting hole 11 is formed in the rear end of the blade 2, and the blade 2 is sleeved on the limiting column 7 through the mounting hole. As shown in fig. 4 and 5, the elastic member 4 includes a horizontal connecting portion 41 and a supporting sliding portion 42 which are integrally connected, the rear end of the horizontal connecting portion 41 is directly clamped or pin-connected with the movable push handle 3, the limiting post 7 is vertically welded on the upper portion of the horizontal connecting portion 41, and the blade 2 is sleeved on the limiting post 7. Wherein, the diameter of the mounting hole 11 is slightly larger than that of the limiting column 7. The lower end of the supporting sliding part 42 is abutted against the inner wall 5 of the cutter housing, and the supporting sliding part 42 can slide along the inner wall 5 of the cutter housing. The supporting sliding part 42 has a side pressure elastic force which always abuts against the inner wall 5 of the cutter housing, under the support of the side pressure elastic force, the horizontal connecting part 41 which is integrally connected with the supporting sliding part 42 is also subjected to a reverse side pressure which is opposite to the side pressure elastic force, the reverse side pressure pushes the horizontal connecting part 41 upwards to keep the horizontal connecting part basically, the highest point of the limiting column 7 is higher than the cutter blade at the moment, and the cutter blade 2 is ensured to be firmly sleeved on the limiting column 7 and not to drop off accidentally.

The inner wall 5 of the knife shell is further provided with a loading and unloading point positioning clamping groove 8, when the supporting sliding part 42 slides to the loading and unloading point positioning clamping groove 8 along the inner wall 5 of the knife shell, the lower end of the supporting sliding part 42 can fall into the loading and unloading point positioning clamping groove 8, the loading and unloading point positioning clamping groove 8 is a concave clamping groove, when the elastic component 4 falls into the loading and unloading point positioning clamping groove 8, the horizontal connecting part 41 integrally connected with the supporting sliding part 42 is influenced to sink, namely the horizontal connecting part 41 is not kept horizontal any more, but inclines downwards, and the limiting column 7 on the horizontal connecting part 41 can sink to a certain height. When the elastic member 4 is clamped into the loading and unloading point positioning clamping groove 8, the highest point of the limiting column 7 is lower than the blade. Because the diameter of mounting hole 11 slightly is greater than the diameter of spacing post 7, exists certain clearance between spacing post 7 and the mounting hole 11 inner wall promptly, even horizontal connecting portion 41 takes place the slope, spacing post 7 also can shake off from mounting hole 11, and blade 2 can drop from spacing post 7 smoothly. When the utility knife is used, the front end of the blade 2 is extended by a small section, so that the mounting and dismounting point positioning clamping groove 8 is arranged on the inner wall 5 of the knife shell and close to the front end, and the blade 2 is prevented from falling off accidentally.

The specific blade replacement step: when the pushing handle 3 is pushed forward to enable the supporting sliding part 42 to slide forward along the inner wall 5 of the knife shell to be clamped into the loading and unloading point positioning clamping groove 8, the old blade can automatically break away from the limiting column 7 and then slide out from the blade edge 6, the new blade is directly inserted from the blade edge 6 at the front end, the pushing handle 3 is pushed backward synchronously, the supporting sliding part 42 slides backward along the inner wall 5 of the knife shell to withdraw from the loading and unloading point positioning clamping groove 8, and the blade 2 is sleeved on the limiting column 7 again to finish the installation. In this embodiment, the loading and unloading point positioning slot 8 is in a downward-concave arc shape along a vertical section parallel to the moving direction, which is helpful for the support sliding part 42 to slide backwards along the slot wall of the loading and unloading point positioning slot 8 and exit from the loading and unloading point positioning slot 8.

In this embodiment, the elastic member 4 may be a linear snap spring or a sheet-shaped elastic piece. As shown in fig. 4 and 5. The horizontal connecting part 41 is in a linear shape along the vertical section parallel to the moving direction, and the supporting sliding part 42 is in an S-shaped hook shape along the vertical section parallel to the moving direction, wherein the S-shaped hook shape can keep a smaller deformation amount in a longer time, and the elasticity of the S-shaped hook shape is not influenced. Meanwhile, the lower end of the S-shaped hook is only in contact with the inner wall of the cutter shell or a contact line, so that the friction force is small, and the pushing and moving of the push handle 3 are easier.

Example 2: the utility knife of this embodiment, in which the blade is easily replaced, will be described mainly focusing on the differences from embodiment 1.

As shown in fig. 6, in this embodiment, a blocking protrusion 9 is disposed on the inner wall of the knife housing at the rear end of the loading and unloading point positioning slot 8, the blocking protrusion 9 protrudes slightly to limit and block the supporting sliding portion 42, when the pushing handle 3 is pushed and moved in the normal use process, the supporting sliding portion 42 stops when reaching the blocking protrusion 9, and the supporting sliding portion 42 is prevented from accidentally falling into the loading and unloading point positioning slot 8 when moving too fast. When the blade 2 is to be replaced, the supporting sliding part 42 can be pushed to pass over the blocking projection 9 by increasing the force.

Finally, it should be noted that: the above-mentioned embodiments are only used for illustrating but not limiting the technical solution of the present invention, but the protection scope of the present invention is not limited thereto, and any equivalent replacement and modification or partial replacement that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides an art knife of easy change blade, includes the sword shell and installs blade, the removal in the sword shell and pushes away the handle, its characterized in that: the movable push handle is provided with an elastic component, one side of the elastic component is in sliding contact with the inner wall of the cutter shell, the other side of the elastic component is provided with a limiting column, the blade is sleeved on the limiting column, and the elastic component can be abutted against the inner wall of the cutter shell so that the highest point of the limiting column is higher than the lateral pressure elasticity of the blade; still be provided with loading and unloading point location draw-in groove on the sword shell inner wall, elastic component can be blocked into loading and unloading point location draw-in groove when sliding to loading and unloading point location draw-in groove along the sword shell inner wall to when elastic component card goes into loading and unloading point location draw-in groove, the peak of spacing post is less than the blade.

2. An easy blade change utility knife as claimed in claim 1, wherein: the elastic component comprises a horizontal connecting part and a supporting sliding part which are connected in an integrated manner, the limiting column is arranged on the horizontal connecting part, and the supporting sliding part can slide along the inner wall of the knife shell and can be clamped into the loading and unloading point positioning clamping groove.

3. An easy blade replaceable utility knife according to claim 2, wherein: the horizontal connecting part is linear along the vertical section parallel to the moving direction, and the supporting sliding part is S-shaped hook along the vertical section parallel to the moving direction.

4. An easy blade replaceable utility knife according to claim 3, wherein: the elastic component is a linear snap spring or a sheet-shaped elastic sheet.

5. An easy blade replaceable utility knife according to claim 1 or 4, wherein: and a mounting hole is formed in the position, close to the rear end of the blade, on the blade, and the diameter of the mounting hole is larger than that of the limiting column.

6. An easy blade replaceable utility knife according to claim 5, wherein: the loading and unloading point positioning clamping groove is in a downward-concave arc shape along the vertical section parallel to the moving direction.

7. An easy blade replaceable utility knife according to claim 1 or 6, wherein: the loading and unloading point positioning clamping groove is arranged on the inner wall of the knife shell and close to the front end.

8. An easy blade change utility knife as claimed in claim 7, wherein: and a blocking bump is arranged on the inner wall of the knife shell at the rear end of the loading and unloading point positioning clamping groove.