Springback knife
By designing the rebound structure and storage structure in the utility knife, the problem of traditional utility knife continuous push and manual pushback is solved, a more convenient and safe use experience is achieved, and the blade replacement process is simplified.
Patent Information
- Application Number
- CN202421688677.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-17
AI Technical Summary
When used, traditional utility knife needs to be pushed all the time to prevent backing, and needs to be pushed back manually after use, which poses a safety hazard.
A rebound knife is designed, including the main body of the utility knife, push button and rebound structure. The combination of the pullback spring and the limit block can realize the automatic rebound of the blade after being pushed out, and the blade can be easily replaced and stored through the storage structure.
It solves the problem that traditional utility knife needs to continuously push the blade and manual pushback, improves the convenience and safety of use, and simplifies the blade replacement process.
Smart Images
Figure CN222945615U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of utility knives, in particular to a springback knife. Background Art
[0002] A utility knife is a multifunctional knife, commonly known as a carving knife or wallpaper knife. It is mainly used for cutting, especially in the production of arts and handicrafts. It is often used to cut soft materials. The traditional utility knife is mainly composed of a handle and a blade, which is a pull-out structure. However, there are still some problems with the use of traditional utility knives.
[0003] Traditional utility knives are all pull-out type. The blade is pushed out when in use, and it needs to be pushed continuously after being pushed out to ensure that the blade does not retreat during use. After use, the blade needs to be pushed back manually. This makes it easy to forget to push the blade back during use, resulting in safety hazards. Therefore, a rebound knife is needed to solve the above problems. Utility Model Content
[0004] The utility model aims to provide a rebound knife, which is used to solve the defects of the existing utility knife that the blade needs to be pushed all the time when it is pushed out to ensure that the blade does not retreat during use, and the blade needs to be pushed back manually after use.
[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a rebound knife, comprising a utility knife body, a push button and a mounting seat; a blade is provided on one side inside the utility knife body, a rebound structure is provided on one side of the blade, and a storage structure is provided on the other side inside the utility knife body; the rebound structure comprises a pressing rod, a fixing frame, a mounting column, a pullback spring, a fixing sheet, a clamping block, a limiting block, a connecting plate and a telescopic spring, and the mounting column is provided at the middle position inside the utility knife body.
[0006] Preferably, a return spring is sleeved on the outer side of the mounting column, the fixing frame is arranged on one side inside the utility knife body, the utility knife body is installed inside the fixing frame, and one side of the fixing frame is connected to the other side of the return spring.
[0007] Preferably, a push button is provided at the top of the fixing frame, a connecting plate is provided on one side of the top of the fixing frame, a clamping block is provided on one side of the bottom end of the connecting plate, a fixing plate is provided on one side inside the utility knife body at the bottom end of the clamping block, a limiting block is provided on one side of the top of the fixing plate, the pressing rod is provided inside one side of the push button, and a telescopic spring is wound around the outside of the pressing rod.
[0008] Preferably, two ends of the pull-back spring are respectively connected to the mounting column and the fixing frame, and a telescopic structure is formed between the pull-back spring and the fixing frame.
[0009] Preferably, the pressing rod is inserted into the interior of the push button, and a sliding structure is formed between the pressing rod and the push button.
[0010] Preferably, the storage structure includes a storage rack, a hinge column, a torsion spring, a return spring, a mounting groove and a push block, the storage rack is arranged inside one side of the utility knife body, a hinge column is arranged at the top end of one side of the storage rack, a mounting seat is arranged at a position inside the utility knife body on one side of the storage rack, a torsion spring is arranged on the outside of the mounting seat, and one end of the torsion spring is connected to one side of the storage rack.
[0011] Preferably, the installation slot is opened inside the utility knife body on one side of the top end of the storage rack, a return spring is arranged inside the installation slot, a push block is arranged on one side of the return spring, and a telescopic connection is formed between the return spring and the push block.
[0012] The utility model provides a rebound knife, which has the advantages of:
[0013] By using the fixing plate and the connecting plate in coordination, the card block can be stuck on one side of the limit block after the blade is pushed, so that the blade can be used without having to be pushed all the way after it is pushed out.
[0014] After use, the limit block is separated from the clamping block by pressing the pressing rod, and is pulled back to its original position under the action of the pull-back spring without manual pushing, making it more convenient to use.
[0015] By setting up the storage rack, multiple sets of spare blades can be placed inside it, and by using a hinge column and a torsion spring, the storage rack can be stored inside the main body of the utility knife, so that the blades can be taken out in time and conveniently when replacing the blades. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a front view structural schematic diagram of the utility model;
[0017] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;
[0018] Figure 3 It is a schematic diagram of a partial cross-sectional structure of the storage structure of the utility model;
[0019] Figure 4 It is a side view structural diagram of the rebound structure of the utility model;
[0020] Figure 5 This is a schematic diagram of a partial structure of the rebound structure of the utility model.
[0021] In the figure: 1. utility knife body; 2. blade; 3. push button; 4. rebound structure; 401. pressing rod; 402. fixing frame; 403. mounting column; 404. pull-back spring; 405. fixing plate; 406. clamping block; 407. limiting block; 408. connecting plate; 409. telescopic spring; 5. storage structure; 501. storage frame; 502. hinged column; 503. torsion spring; 504. reset spring; 505. mounting slot; 506. push block; 6. mounting seat. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] The utility model embodiment provides a rebound knife, such as Figure 1-Figure 5 As shown, a rebound knife includes a utility knife body 1, a push button 3 and a mounting seat 6; a blade 2 is arranged on one side inside the utility knife body 1, a rebound structure 4 is arranged on one side of the blade 2, and a storage structure 5 is arranged on the other side inside the utility knife body 1.
[0024] In a further preferred embodiment of the present invention, Figure 1-Figure 5 As shown: the rebound structure 4 includes a pressing rod 401, a fixing frame 402, a mounting column 403, a pull-back spring 404, a fixing sheet 405, a block 406, a limit block 407, a connecting plate 408 and a telescopic spring 409, the mounting column 403 is arranged at the middle position inside the utility knife body 1, the outer side of the mounting column 403 is sleeved with a pull-back spring 404, the fixing frame 402 is arranged on one side inside the utility knife body 1, the utility knife body 1 is installed inside the fixing frame 402, one side of the fixing frame 402 is connected to the other side of the pull-back spring 404, the top of the fixing frame 402 is provided with a push button 3, and the top of the fixing frame 402 A connecting plate 408 is provided on one side of the end, a clamping block 406 is provided on one side of the bottom end of the connecting plate 408, a fixing plate 405 is provided on one side of the interior of the utility knife body 1 at the bottom end of the clamping block 406, a limiting block 407 is provided on one side of the top end of the fixing plate 405, a pressing rod 401 is provided inside one side of the push button 3, a telescopic spring 409 is wound around the outside of the pressing rod 401, two ends of the pull-back spring 404 are respectively connected to the mounting column 403 and the fixing frame 402, a telescopic structure is formed between the pull-back spring 404 and the fixing frame 402, the pressing rod 401 is inserted into the interior of the push button 3, and a sliding structure is formed between the pressing rod 401 and the push button 3.
[0025] Specifically, in the present embodiment: when using the utility knife body 1, the push button 3 is pushed to push out the blade 2. When the connecting plate 408 moves to one side of the fixing plate 405, the pressing rod 401 is pressed so that the bottom end of the pressing rod 401 squeezes one side of the fixing plate 405 and tilts downward. The fixing plate 405 is made of plastic and has a certain elasticity. At this time, the push button 3 is pushed to move to one side, and the pressing rod 401 is released so that the clamping block 406 is clamped on one side of the limit block 407 to complete the fixation of the blade 2, so that after being pushed out, the blade 2 can be ensured not to retreat without manual pushing. When the blade 2 needs to be retracted, the pressing rod 401 is pressed so that the bottom end of the pressing rod 401 squeezes one side of the fixing plate 405 and tilts downward, so that the clamping block 406 and the limit block 407 fall off. At this time, under the action of the return spring 404, the blade 2 can be instantly pulled back to the inside of the utility knife body 1 to achieve the rebound work.
[0026] In a further preferred embodiment of the present invention, Figure 1-Figure 5 As shown: the storage structure 5 includes a storage rack 501, a hinge column 502, a torsion spring 503, a return spring 504, a mounting slot 505 and a push block 506. The storage rack 501 is arranged inside one side of the utility knife body 1, and the top end of one side of the storage rack 501 is provided with a hinge column 502. A mounting seat 6 is arranged at a position inside the utility knife body 1 on one side of the storage rack 501. A torsion spring 503 is arranged on the outside of the mounting seat 6. One end of the torsion spring 503 is connected to one side of the storage rack 501. The mounting slot 505 is opened inside the utility knife body 1 on the top side of the storage rack 501. The inside of the mounting slot 505 is provided with a return spring 504. A push block 506 is arranged on one side of the return spring 504. A telescopic connection is formed between the return spring 504 and the push block 506.
[0027] Specifically, in the present embodiment, when replacing the blade 2, the push block 506 is pressed to one side so that one end of the push block 506 is withdrawn from the inside of one side of the storage rack 501. At this time, the storage rack 501 can be flipped out, and the torsion spring 503 will be deformed when flipped. After the storage rack 501 is flipped out, the blade 2 inside the storage rack 501 can be taken out for replacement. The setting of the storage rack 501 can store the blade 2, making it more convenient to replace the blade 2. After the replacement is completed, the storage rack 501 is released. At this time, under the elastic action of the torsion spring 503, the storage rack 501 will be bounced back to its original position and inserted into the inside of the utility knife body 1, which will not affect the normal use of the utility knife body 1, thereby improving the convenience and making it more convenient to replace the blade 2, thereby completing the use of the utility knife body 1.
[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A rebound knife, comprising a utility knife body (1), a push button (3) and a mounting seat (6); Features: A blade (2) is disposed on one side of the utility knife body (1), a rebound structure (4) is disposed on one side of the blade (2), and a storage structure (5) is disposed on the other side of the utility knife body (1); The rebound structure (4) comprises a pressing rod (401), a fixing frame (402), a mounting column (403), a pull-back spring (404), a fixing plate (405), a clamping block (406), a limiting block (407), a connecting plate (408) and a telescopic spring (409), and the mounting column (403) is arranged at a middle position inside the utility knife body (1).
2. A rebound knife according to claim 1, characterized in that: The outer side of the mounting column (403) is sleeved with a return spring (404), the fixing frame (402) is arranged on one side inside the utility knife body (1), the utility knife body (1) is installed inside the fixing frame (402), and one side of the fixing frame (402) is connected to the other side of the return spring (404).
3. A rebound knife according to claim 2, characterized in that: A push button (3) is arranged at the top of the fixing frame (402), a connecting plate (408) is arranged at one side of the top of the fixing frame (402), a clamping block (406) is arranged at one side of the bottom of the connecting plate (408), a fixing plate (405) is arranged at one side of the interior of the utility knife body (1) at the bottom of the clamping block (406), a limiting block (407) is arranged at one side of the top of the fixing plate (405), the pressing rod (401) is arranged at the inside of one side of the push button (3), and a telescopic spring (409) is wound around the outside of the pressing rod (401).
4. The rebound knife according to claim 1, characterized in that: The two ends of the pull-back spring (404) are respectively connected to the mounting column (403) and the fixing frame (402), and a telescopic structure is formed between the pull-back spring (404) and the fixing frame (402).
5. The rebound knife according to claim 1, characterized in that: The pressing rod (401) is inserted into the interior of the push button (3), and a sliding structure is formed between the pressing rod (401) and the push button (3).
6. The rebound knife according to claim 1, characterized in that: The storage structure (5) comprises a storage rack (501), a hinge column (502), a torsion spring (503), a return spring (504), a mounting groove (505) and a push block (506); the storage rack (501) is arranged inside one side of the utility knife body (1); the top end of one side of the storage rack (501) is provided with a hinge column (502); a mounting seat (6) is arranged at a position inside the utility knife body (1) on one side of the storage rack (501); a torsion spring (503) is arranged on the outer side of the mounting seat (6); and one end of the torsion spring (503) is connected to one side of the storage rack (501).
7. The rebound knife according to claim 6, characterized in that: The installation groove (505) is opened inside the utility knife body (1) at one side of the top of the storage rack (501), a return spring (504) is arranged inside the installation groove (505), a push block (506) is arranged on one side of the return spring (504), and a telescopic connection is formed between the return spring (504) and the push block (506).