Protective art knife
Through the combined structure of push block, skateboard and guard plate, the problem of the existing utility knife requiring two operation of the telescopic guard plate is solved, and the synchronous expansion and contraction of the guard plate and the blade are achieved, improving the stability and operation simplicity of the blade.
Patent Information
- Application Number
- CN202422415505.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-08
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-08
AI Technical Summary
The existing utility knife requires two operations to extend and retract the guard plate when the blade extends, and it is complex in structure and inconvenient to use.
A protective utility knife is designed. Through the combined structure of push block, skateboard and guard plate, the extension length of the guard plate can be adjusted, and the synchronous expansion and contraction of the guard plate and the blade can be achieved through the cooperation of push keys and the clamps, simplifying the operation steps.
The synchronous expansion and contraction of the guard plate and the blade is achieved, which improves the stability of the blade, avoids shaking and breaking, is easy to operate and is cheap.
Smart Images
Figure CN223173025U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cutting tool equipment, in particular to a protective utility knife. Background Art
[0002] The existing utility knife, such as the Chinese utility model patent application with the application number 202420844224X, discloses a utility knife, which includes a housing, a bottom plate slidably arranged in the housing along its length direction, a blade fixedly connected to the bottom plate, a push key for pushing the bottom plate, and at opposite ends of the upper part of the housing along the length direction of the housing, there are sliding plates slidably arranged, a sliding notch is opened at the housing above the sliding plates, a push block is arranged on the sliding plates, the push block is slidably arranged in the sliding notch and can push the sliding plates; a long strip-shaped guard plate is fixedly connected to the sliding plates along the length direction of the blade, a guard plate groove is opened at the lower end surface of the guard plate, and the guard plate groove is slidably inserted at the back of the blade. When the blade cuts an object, this utility knife can protect the blade through the guard plate to avoid its distortion and fracture, and the length of the extended guard plate can be adjusted.
[0003] However, this utility knife still has the following technical problems: when the blade extends longer, before cutting, it is necessary to push the push block to make the guard plate extend to cover the back of the blade for support. During use, both the extension and retraction of the blade and the guard plate require two operations, with a complex structure and inconvenient use. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a protective utility knife that can protect and support the blade during use, freely adjust the protection length, and has a simple structure and easy operation.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions: a protective utility knife, including a housing, a bottom plate slidably arranged in the housing along its length direction, a blade detachably connected to the bottom plate, a push key for pushing the bottom plate, and a bottom plate locking structure for locking the bottom plate. A sliding plate groove located inside the housing is arranged at the upper end of the bottom plate, and a clamping groove is also arranged on the sliding plate groove. A push block slidably connected to the housing is arranged at the rear end of the bottom plate, a sliding plate is connected to the push block, a guard plate chute is opened in the housing along the length direction, a long strip-shaped guard plate is slidably connected in the guard plate chute, the sliding plate slides in the sliding groove and is clamped with the clamping groove, a guard plate groove is opened at the lower cross-section of the guard plate, and the guard plate groove is slidably sleeved at the position of the blade.
[0006] Further, a slot is provided along the length direction on the lower end surface of the skateboard. A transverse skateboard slot is provided at the bottom of the slot. A longitudinal skateboard slot is provided along the width direction on the upper end surface of the skateboard. A clamping block is arranged in the slot. The clamping block is slidably connected up and down with the longitudinal skateboard slot and is clamped with the clamping slot. A sliding key is connected along the length direction in the slot. The upper end of the sliding key is in a V-shaped structure and is connected with the clamping block. The lower end is fixedly connected with the push block through a connecting plate. A guard plate installation slot is further provided at the front end of the skateboard to connect the guard plate to the skateboard.
[0007] Further, the housing includes an outer shell. One end of the outer shell is detachably connected with a plug block. After the plug block is disassembled, the push key, the push block, the skateboard guard plate and the blade can all be taken out from the housing.
[0008] Further, a plurality of clamping slots are provided along the length direction of the housing.
[0009] Further, a connecting column for sleeving and connecting the blade is further provided at the front end of the bottom plate.
[0010] The beneficial effects of the present utility model are as follows: 1) By providing the push block, the skateboard and the guard plate, the extending length of the corresponding guard plate can be adjusted according to the extending length of the blade, and the extending part of the blade can be sleeved in the guard plate. When the blade is cutting, due to the protection of the guard plate, the force-bearing stability of the blade is enhanced, thereby effectively avoiding the occurrence of phenomena such as blade shaking, twisting and breaking. In addition, the item can be cut by knocking, ensuring the safety of use.
[0011] 2) By providing the clamping block, the sliding longitudinal slot, the guard plate installation slot and the connecting plate, the skateboard can be driven to move in the skateboard groove by moving the push block to adjust the extending length of the guard plate. At the same time, when the push key is not locked, when the push block moves forward, it will also drive the push key to move together, and the blade and the guard plate can be extended simultaneously with one action. Similarly, when the blade retracts, the push key moves backward and drives the push block to move together, and the blade and the guard plate can be retracted simultaneously with one action, which can save operation steps, is flexible and convenient to operate, and has a simple structure and low cost. Description of the Drawings
[0012] Figure 1 is a schematic structural diagram of the present utility model.
[0013] Figure 2 is a half-sectional view of the present utility model.
[0014] Figure 3 is a schematic internal structure diagram of the present utility model.
[0015] Figure 4 is Figure 3 the front view of
[0016] Figure 5 isFigure 4 Upper view.
[0017] In the figure: 1, housing; 2, bottom plate; 3, push key; 4, skateboard groove; 5, card slot; 6, push block; 7, skateboard; 8, guard plate chute; 9, guard plate; 10, guard plate groove; 11, skateboard transverse groove; 12, skateboard longitudinal groove; 13, clamping block; 14, sliding key; 15, connecting plate; 16, guard plate mounting groove; 17, outer shell; 18, plug block; 19, connecting column. Specific embodiments
[0018] The present utility model will be further explained below in conjunction with the accompanying drawings and specific embodiments.
[0019] Embodiment: As shown in the figure, a protective utility knife according to the present utility model includes a housing 1, a bottom plate 2 slidably disposed in the housing 1 along its length direction, a blade detachably connected to the bottom plate 2, a push key 3 for pushing the bottom plate 2, and a bottom plate 2 locking structure for locking the bottom plate 2. A skateboard groove 4 is provided at the upper end of the bottom plate 2 and located inside the housing 1, and a card slot 5 is further provided on the skateboard groove 4. A push block 6 slidably connected to the housing 1 is provided at the rear end of the bottom plate 2, and a skateboard 7 is connected to the push block 6. A guard plate chute 8 is provided in the housing 1 along the length direction, and a long strip-shaped guard plate 9 is slidably connected in the guard plate chute 8. The skateboard 7 slides in the sliding groove and is clamped with the card slot 5. A guard plate groove 10 is provided on the lower cross section of the guard plate 9, and the guard plate groove 10 can be slidably sleeved on the blade. When in use, the guard plate 9 extends out, and the guard plate groove 10 at its lower end sleeves the blade, which can not only prevent the blade from shaking during cutting, but also strengthen the structural strength of the blade to prevent the blade from breaking during cutting. Secondly, after the guard plate 9 extends outwards, it can also be used as a knocking object.
[0020] A slot is provided on the lower end surface of the skateboard 7 along its length direction, a skateboard transverse groove 11 is provided at the bottom of the slot, a skateboard longitudinal groove 12 is provided on the upper end surface of the skateboard 7 along its width direction, a clamping block 13 is disposed in the slot, the clamping block 13 is slidably connected to the skateboard longitudinal groove 12 up and down and is clamped with the card slot 5. A sliding key 14 is connected in the slot along the length direction. The upper end of the sliding key 14 is in a V-shaped structure and is connected to the clamping block 13, and the lower end is fixedly connected to the push block 6 through a connecting plate 15. A guard plate mounting groove 16 is further provided at the front end of the skateboard 7 to connect the guard plate 9 to the skateboard 7. When in use, the sliding key 14 moves slightly back and forth along the skateboard transverse groove 11, and the V-shaped structure at the upper end drives the clamping block 13 to move back and forth, so as to jack up the clamping block 13 upwards, so that the clamping block 13 is disengaged from the limit of the card slot 5. Therefore, when the push block 6 is pushed to move, the skateboard 7 can move freely to adjust the extending length of the guard plate 9, and vice versa; when the skateboard 7 is stationary, the clamping block 13 drops and is clamped with the card slot 5 to limit the guard plate 9. When the blade cuts, the skateboard 7 can protect the blade body from shaking and breaking.
[0021] The housing 1 includes a housing shell 17, and a plug block 18 is detachably connected to one end of the housing shell 17. After the plug block 18 is removed, the push key 3, the push block 6, the slide plate 7, the guard plate 9 and the blade can all be taken out from the housing 1, which is convenient for the replacement and use between the blade and each component.
[0022] A plurality of card slots 5 are arranged along the length direction of the housing 1. When the push block 6 moves, it will drive the slide plate 7 to move. During the process, the latch block 13 will float up and down under the action of the sliding key 14. When it stops, the latch block 13 will fall and be clamped with the card slot 5 to limit the latch block 13, thereby locking the position of the slide plate 7, that is, when the push block 6 moves, it will drive the guard plate 9 to move. After stopping the movement, the latch block 13 will be limited to lock the guard plate 9 in the guard plate chute 8.
[0023] A connecting column 19 for sleeving and connecting the blade is further arranged at the front end of the bottom plate 2. When in use, the blade is sleeved on the connecting column 19. By moving the push key 3, the bottom plate 2 is driven to move together. At the same time, after the plug block 18 is removed, it can be drawn out from the rear end to facilitate the replacement of the blade for cutting use.
[0024] By setting the push block, the slide plate and the guard plate, the present utility model can adjust the corresponding extending length of the guard plate according to the extending length of the blade, and the extending part of the blade can be sleeved in the guard plate. When the blade is cutting, due to the protection of the guard plate, the force stability of the blade is enhanced, thereby effectively avoiding the occurrence of phenomena such as blade shaking, twisting and breaking. In addition, the article can also be cut by knocking, ensuring the safety of use.
[0025] By setting the latch block, the sliding longitudinal groove, the guard plate mounting groove and the connecting plate, the present utility model can drive the slide plate to move in the slide plate groove by moving the push block to adjust the extending length of the guard plate. At the same time, when the push key is not locked, when the push block moves forward, it will also drive the push key to move together, and the blade and the guard plate can be extended simultaneously with one action. Similarly, when the blade retracts, the push key moves backward and drives the push block to move together, and the blade and the guard plate can be retracted simultaneously with one action, which can save operation steps, is flexible and convenient to operate, and has a simple structure and low cost.
[0026] The above is only used to illustrate the technical solution of the present utility model and not to limit it. Other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the present utility model should be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solution of the present utility model.
Claims
1. A protective utility knife, characterized in that: It includes a housing, a bottom plate slidably arranged along its length direction inside the housing, a blade detachably connected to the bottom plate, a push key for pushing the bottom plate, and a bottom plate locking structure for locking the bottom plate. A skateboard groove located inside the housing is provided at the upper end of the bottom plate. A card slot is further provided on the skateboard groove. A push block slidably connected to the housing is provided at the rear end of the bottom plate. A skateboard is connected to the push block. A strip-shaped guard plate is slidably connected in a guard plate chute opened along the length direction inside the housing. The skateboard slides in the sliding groove and is clamped with the card slot. A guard plate groove is opened at the lower cross section of the guard plate. The guard plate groove is slidably sleeved at the blade position.
2. The protective utility knife according to claim 1, wherein: A slot hole is opened along the length direction of the lower end surface of the skateboard. A transverse skateboard groove is opened at the bottom of the slot hole. A longitudinal skateboard groove is opened along the width direction of the upper end surface of the skateboard. A clamping block is arranged in the slot hole. The clamping block is slidably connected with the longitudinal skateboard groove up and down and is clamped with the card slot. A sliding key is connected along the length direction in the slot hole. The upper end of the sliding key is in a V-shaped structure and is connected with the clamping block. The lower end is fixedly connected with the push block through a connecting plate. A guard plate installation groove is further provided at the front end of the skateboard to connect the guard plate to the skateboard.
3. A protective utility knife according to claim 1, characterized in that: The housing includes an outer shell. A plug block is detachably connected to one end of the outer shell. After the plug block is disassembled, the push key, the push block, the skateboard guard plate and the blade can all be taken out of the housing.
4. A protective utility knife according to claim 1, characterized in that: A plurality of the card slots are arranged along the length direction of the housing.
5. A protective utility knife according to claim 1, characterized in that: A connecting column for sleeving and connecting the blade is further provided at the front end of the bottom plate.