Cutter

The design of the blade removal structure simplifies the replacement process of thin-blade knives such as utility knives, solves the problem of complex and easily damaged structures in existing technologies, and achieves safe and fast blade replacement.

CN223790514UActive Publication Date: 2026-01-13SAAME TOOLS SHANGHAI IMPORT & EXPORT CO LTD
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Patent Information

Application Number
CN202423322913.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-31
Publication Date
2026-01-13
Estimated Expiration
2034-12-31

AI Technical Summary

Technical Problem

Existing thin-blade knives such as utility knives have complex and easily damaged replacement mechanisms, making it difficult to replace blades safely and quickly.

Method used

It adopts a blade removal structure, including a blade removal button and a stop. The blade removal button drives the stop to disengage from the slide groove, and the push button slides to the other end to make the blade holder drive the blade out of the housing, which is convenient for blade replacement.

Benefits of technology

It achieves a simple tool structure, fewer parts, less susceptibility to damage, and safe and quick blade replacement.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a cutter, which belongs to the technical field of manual tools, and comprises a shell, a cutter rest arranged in the shell in a sliding manner and a blade arranged on the cutter rest, the shell is provided with a sliding chute, the cutter further comprises a cutter pushing button and a cutter unloading structure, the cutter pushing button is fixed on the cutter rest and is arranged in the sliding chute in a sliding manner, and the cutter unloading structure is arranged on the shell. The knife unloading structure comprises a knife unloading button and a stop block connected with the knife unloading button, the stop block is located in the sliding groove and located in the sliding direction of the knife pushing button to stop the knife pushing button from sliding, the knife unloading button moves relative to the shell to drive the stop block to break away from the sliding groove, and the knife pushing button slides from one end of the sliding groove to the other end to enable the knife rest to drive the blade to stretch out of the shell. And the whole cutter is few in parts, simple in structure and not easy to damage.
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Description

Technical Field

[0001] This utility model relates to the field of hand tool technology, and more particularly to cutting tools. Background Technology

[0002] For knives like utility knives that require very thin blades, the blades are easily damaged during use, making safe and quick blade replacement a key issue. Currently, blade-replaceable knives consist of a housing, a blade holder that slides inside the housing, and the blade mounted on the blade holder. To replace the blade, a replacement button is pressed, pulling out the blade. However, existing blade-replacement mechanisms have many parts, a complex overall structure, and are prone to failure. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, one of the objectives of this utility model is to provide a knife with a simple structure and replaceable blades.

[0004] One of the objectives of this utility model is achieved through the following technical solution:

[0005] A cutting tool includes a housing, a tool holder slidably mounted inside the housing, and a blade mounted on the tool holder. The housing has a groove. The cutting tool also includes a push button and a tool release mechanism. The push button is fixed to the tool holder and slidably mounted in the groove. The tool release mechanism is mounted on the housing and includes a tool release button and a stop connected to the tool release button. The stop is located in the groove and in the sliding direction of the push button, preventing the push button from sliding. The tool release button moves relative to the housing, thereby causing the stop to disengage from the groove. The push button slides from one end of the groove to the other end, causing the tool holder to extend the blade out of the housing.

[0006] Furthermore, the unloading structure is rotatably mounted on the housing.

[0007] Furthermore, the unloading structure also includes a rotating part and two extension parts. The rotating part is rotatably mounted on the housing, and the two extension parts extend out from opposite ends of the rotating part. The unloading button and the stop block are respectively fixed to the two extension parts.

[0008] Furthermore, the slide groove is disposed on the side wall of the housing, and the pusher button and the stop block are located on the same side wall of the housing.

[0009] Furthermore, the rotation axis of the blade removal structure is perpendicular to the plane where the blade is located.

[0010] Furthermore, the overall extension direction of the unloading structure is the same as the sliding direction of the tool holder.

[0011] Furthermore, the slide is located at the top of the housing, and the unloading button and the stop are located at the top and bottom of the housing, respectively.

[0012] Furthermore, the rotation axis of the unloading structure is parallel to the plane where the blade is located.

[0013] Furthermore, the overall extension direction of the unloading structure is the same as the width direction of the tool.

[0014] Furthermore, the cutting tool also includes a tool magazine for storing spare blades, and the tool magazine is detachably mounted to the housing.

[0015] Compared with the prior art, the tool unloading structure of this utility model includes an unloading button and a stop connected to the unloading button. The stop is located in the slide groove and in the sliding direction of the push button to block the push button from sliding. The unloading button moves relative to the outer shell, thereby driving the stop to disengage from the slide groove. The push button slides from one end of the slide groove to the other end, causing the tool holder to drive the blade out of the outer shell, so as to facilitate the replacement of the blade. The tool has fewer parts, a simple structure, and is not easily damaged. Attached Figure Description

[0016] Figure 1 This is a perspective view of the first embodiment of the cutting tool of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the first embodiment of the cutting tool;

[0018] Figure 3 This is a perspective view of the tool unloading structure in the first embodiment of the cutting tool;

[0019] Figure 4 This is a partial structural schematic diagram of the first embodiment of the cutting tool;

[0020] Figure 5 This is a schematic diagram of the tool unloading state in the first embodiment of the cutting tool;

[0021] Figure 6 This is a perspective view of the second embodiment of the cutting tool of this utility model;

[0022] Figure 7 This is a perspective view of the second embodiment of the cutting tool from another angle;

[0023] Figure 8 This is a schematic diagram of the internal structure of the cutting tool in the second embodiment;

[0024] Figure 9 This is a perspective view of the tool unloading structure in the second embodiment of the cutting tool;

[0025] Figure 10 This is a partial structural schematic diagram of the second embodiment of the cutting tool;

[0026] Figure 11 This is a schematic diagram of the tool unloading state in the second embodiment of the cutting tool.

[0027] In the diagram: 10, outer shell; 11, first shell; 110, slide groove; 111, mounting groove; 112, rotating shaft; 12, second shell; 20, tool holder; 30, push-tool button; 40, blade; 50, tool unloading structure; 51, tool unloading button; 52, stop block; 53, rotating part; 54, extension part; 55, mounting post; 60, elastic element; 70, tool magazine. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or it can be fixed through another intermediate component. When a component is said to be "connected to" another component, it can be directly connected to the other component or it may be fixed through another intermediate component. When a component is said to be "set on" another component, it can be set directly on the other component or it may be set through another intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] Please see Figure 1 , Figure 2 as well as Figure 6 , Figure 8The cutting tool includes a housing 10, a tool holder 20, a push button 30, a blade 40, a tool removal structure 50, and an elastic element 60. The tool holder 20 is slidably installed inside the housing 10 and is used to install the blade 40. The push button 30 is fixed to the tool holder 20 and is slidably installed in and exposed outside the housing 10. By pressing the push button 30, the push button 30 slides, thereby causing the tool holder 20 and the blade 40 to extend out of the housing 10 for easy replacement of the blade 40. The tool removal structure 50 includes a tool removal button 51 and a stop 52. The stop 52 is kinetically connected to the tool removal button 51 and is located on the sliding path of the push button 30, blocking the push button 30. When it is necessary to change the blade 40, by pressing the tool removal button 51, the stop 52 is moved away from the sliding path of the push button 30, allowing the push button 30 to move from the receiving position to the tool changing position.

[0032] The cutting tool includes two embodiments in this application. In the first embodiment, the tool unloading structure 50 is horizontally arranged. In the second embodiment, the tool unloading structure 50 is horizontally arranged. Example

[0033] Figures 1 to 5 This is the first embodiment of the cutting tool of this application. In this embodiment, the cutting tool includes a housing 10, a tool holder 20, a push button 30, a blade 40, a tool unloading structure 50, and an elastic element 60.

[0034] The outer shell 10 has a two-part structure, comprising a first shell 11 and a second shell 12, which are joined and fixed together to form the outer shell 10. The interior of the outer shell 10 is hollow, used to install the tool holder 20, the blade 40, the tool unloading structure 50, and the elastic element 60.

[0035] Please continue reading. Figure 1 as well as Figure 4 The first housing 11 is provided with a slide groove 110 for sliding the push button 30. The extension direction of the slide groove 110 is the same as the length direction of the tool. The slide groove 110 is located on the side wall of the housing 10. The inner wall of the first housing 11 is provided with a mounting groove 111 and a rotating shaft 112. The mounting groove 111 is used to mount an elastic element 60, which provides a restoring force to the unloading structure 50. The rotating shaft 112 is used to mount the unloading structure 50, so that the unloading structure 50 is rotatably mounted on the housing 10, thereby allowing the stop block 52 to disengage from the slide groove 110 when the unloading button 51 is pressed.

[0036] Please continue reading. Figure 2 The tool holder 20 is slidably mounted inside the housing 10, and the tool holder 20 is used to mount the blade 40. Specifically, the blade 40 is inserted into the tool holder 20, and when the blade 40 needs to be replaced, the blade 40 is pulled out from the tool holder 20.

[0037] The push button 30 is fixed to the tool holder 20. When the push button 30 slides in the slide groove 110, it drives the tool holder 20 to slide inside the housing 10. When the push button 30 is located at one end of the slide groove 110 (the receiving position), the tool holder 20 and the blade 40 are received in the housing 10. When the push button 30 is located at the other end of the slide groove 110 (the tool changing position), the blade 40 and part of the tool holder 20 extend out of the housing 10.

[0038] Please continue reading. Figure 3 The unloading structure 50 includes an unloading button 51, a stop 52, a rotating part 53, an extension part 54, and a mounting post 55. The rotating part 53 has a rotating hole, and there are two extension parts 54 extending from both sides of the rotating part 53. The unloading button 51 and the stop 52 are respectively fixed to the two extension parts 54. The mounting post 55 extends from the stop 52 and is used to fit onto the elastic member 60. The unloading button 51, the stop 52, the rotating part 53, the extension part 54, and the mounting post 55 are integrally formed. When the unloading button 51 is pressed, the rotating part 53 rotates relative to the outer shell 10, and the stop 52 rotates about the rotating part 53 as the center, thereby disengaging from the slide groove 110.

[0039] The elastic element 60 is a spring, which is installed in the mounting groove 111. Both ends of the elastic element 60 abut against the outer shell 10 and the stop block 52, respectively.

[0040] Please continue reading. Figure 4 When assembling the cutting tool, the tool holder 20 is slidably installed inside the housing 10, the push button 30 is located in the slide groove 110, the rotating part 53 of the unloading structure 50 is rotatably installed on the rotating shaft 112, the stop block 52 is located in the slide groove 110, and the unloading button 51 is exposed outside the housing 10. At this time, the unloading structure 50 is horizontally set, the extension direction of the unloading structure 50 is the length direction of the cutting tool, the rotating shaft of the unloading structure 50 is perpendicular to the cutting blade 40, and the push button 30, the unloading button 51, and the stop block 52 are located on the side wall of the housing 10.

[0041] Please continue reading. Figure 5 When changing the blade 40, press the push button 30. The push button 30 drives the tool holder 20 and the blade 40 to slide. When the push button 30 moves to the stop 52, press the unload button 51. The unload structure 50 rotates relative to the outer shell 10, the stop 52 disengages from the slide groove 110, and the push button 30 continues to move until it moves to the tool changing position. At this time, the blade 40 and part of the tool holder 20 extend out of the outer shell 10 to change the blade 40. Example

[0042] Please continue reading. Figures 6 to 11This is a second embodiment of the cutting tool of this application. In this embodiment, the cutting tool includes a housing 10, a tool holder 20, a push button 30, a blade 40, a tool unloading structure 50, an elastic element 60, and a tool magazine 70.

[0043] In the second embodiment, the structure of the tool is roughly the same as that of the first embodiment, except that the slide groove 110 is provided on the top of the housing 10, the tool unloading structure 50 is vertically arranged, and the tool also includes a tool magazine 70 for storing the blade 40.

[0044] Please continue reading. Figure 7 The first housing 11 and the second housing 12 are fixed to each other, and a groove 110 is formed between the top of the first housing 11 and the top of the second housing 12.

[0045] Please continue reading. Figure 9 The unloading structure 50 is generally straight and vertically arranged. The stop block 52, extension 54, rotating part 53, extension 54 and unloading button 51 are arranged sequentially and integrally formed. The rotation axis of the unloading structure 50 is parallel to the blade 40.

[0046] Please continue reading. Figure 10 When assembling the cutting tool, the tool holder 20 is slidably installed inside the housing 10, the push button 30 is located in the slide groove 110, the rotating part 53 of the unloading structure 50 is rotatably installed in the housing 10, the stop block 52 is located in the slide groove 110, and the unloading button 51 is exposed outside the housing 10. At this time, the unloading structure 50 is vertically set, the axis of rotation of the unloading structure 50 is parallel to the blade 40, the push button 30 and the stop block 52 are located at the top of the housing 10, and the unloading button 51 is located at the bottom of the housing 10. The elastic element 60 is horizontally set and perpendicular to the blade 40.

[0047] Please continue reading. Figure 11 When changing the blade 40, press the push button 30. The push button 30 drives the tool holder 20 and the blade 40 to slide. When the push button 30 moves to the stop 52, press the unload button 51. The unload structure 50 rotates relative to the outer shell 10, the stop 52 disengages from the slide groove 110, and the push button 30 continues to move until it moves to the tool changing position. At this time, the blade 40 and part of the tool holder 20 extend out of the outer shell 10 to change the blade 40.

[0048] The tool unloading structure 50 of this utility model includes an unloading button 51 and a stop block 52 connected to the unloading button 51. The stop block 52 is located in the slide groove 110 and is located in the sliding direction of the push button 30 to block the push button 30 from sliding. The unloading button 51 moves relative to the outer shell 10, thereby driving the stop block 52 to disengage from the slide groove 110. The push button 30 slides from one end of the slide groove 110 to the other end, causing the tool holder 20 to drive the blade 40 out of the outer shell 10, so as to facilitate the replacement of the blade 40. The tool has few parts, a simple structure, and is not easily damaged.

[0049] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model. These are all equivalent modifications and improvements made to the above embodiments based on the essential technology of this utility model, and all of these fall within the protection scope of this utility model.

Claims

1. A cutting tool, comprising a housing, a tool holder slidably mounted inside the housing, and a cutting blade mounted on the tool holder, characterized in that: The housing is provided with a sliding groove, and the cutting tool further includes a push button and a tool unloading structure. The push button is fixed to the tool holder and slidably mounted in the sliding groove. The tool unloading structure is mounted on the housing and includes a tool unloading button and a stop connected to the tool unloading button. The stop is located in the sliding groove and in the sliding direction of the push button, blocking the push button from sliding. The tool unloading button moves relative to the housing, thereby causing the stop to disengage from the sliding groove. The push button slides from one end of the sliding groove to the other end, causing the tool holder to drive the blade out of the housing.

2. The cutting tool according to claim 1, characterized in that: The unloading structure is rotatably mounted on the housing.

3. The cutting tool according to claim 2, characterized in that: The unloading structure also includes a rotating part and two extension parts. The rotating part is rotatably mounted on the housing, and the two extension parts extend out from opposite ends of the rotating part. The unloading button and the stop block are respectively fixed to the two extension parts.

4. The cutting tool according to claim 2, characterized in that: The slide is disposed on the side wall of the housing, and the push button and the stop are located on the same side wall of the housing.

5. The cutting tool according to claim 4, characterized in that: The rotation axis of the unloading structure is perpendicular to the plane where the blade is located.

6. The cutting tool according to claim 4, characterized in that: The extension direction of the unloading structure is the same as the sliding direction of the tool holder.

7. The cutting tool according to claim 2, characterized in that: The slide is located on the top of the housing, and the unloading button and the stop are located at the top and bottom of the housing, respectively.

8. The cutting tool according to claim 7, characterized in that: The rotation axis of the unloading structure is parallel to the plane where the blade is located.

9. The cutting tool according to claim 7, characterized in that: The extension direction of the unloading structure is the same as the width direction of the cutting tool.

10. The cutting tool according to claim 1, characterized in that: The cutting tool also includes a tool magazine for storing spare blades, and the tool magazine is detachably mounted to the housing.