Blade concealable adhesive tape cutter and safety blade head module

Abstract

The utility model discloses a blade can hide formula adhesive tape cutter and safety tool bit module, this adhesive tape cutter includes casing, tool bit module and elastic reset piece in the recessed cavity of casing front end part, and tool bit module is composed of tool rest, blade and the support piece of forward extension, and the tool rest rotatablely is installed in the recessed cavity of end part through the pivot, is equipped with the protection wall to its front, under the action of elastic reset piece, the blade is in the hidden position of protection wall inboard, when the adhesive tape is pulled out and is towed downward, the adhesive tape is adhered to the support piece and drives the tool rest to rotate around the pivot, makes the blade from the protection wall rear direction forward upper stretch to complete cutting, after cutting, the tool rest is automatically returned under the action of elastic reset piece, makes the blade hide again, the utility model discloses simple structure, action is reliable, can realize the automatic stretch of blade and automatic hiding under the condition of not increasing the additional operation of user, improves the use convenience and significantly enhances security.

Description

Technical Field

[0001] This utility model relates to a tape cutter, and more particularly to a tape cutter with a retractable blade; in use, the blade is exposed for cutting tape; when not in use, the blade is hidden to prevent injury to the human body or other objects. Background Technology

[0002] Tape cutters, as common office and packaging tools, are widely used in various scenarios requiring the application and cutting of tape. Traditional tape cutters typically consist of a cutter base, a tape reel, and a cutting blade. Users pull the tape to the desired length and then cut it using the blade. However, these traditional tape cutters present a significant safety hazard: the blade is usually exposed, and users can easily cut their fingers or other parts of their body if they are not careful during operation, especially when pulling the tape quickly or when operating the device while distracted.

[0003] To address the safety issues of traditional tape cutters and improve safety during use, various tape cutters with concealed blades have emerged on the market.

[0004] The novel tape cutter described in CN 212475531U is a tape cutter that hides the blade by using a sliding protective plate. It includes a first bracket, a blade mounted on the adhesive outlet end of the first bracket, and a sliding protective plate. The protective plate has an elastic element. When the tape squeezes the protective edge, the elastic element is compressed, and the protective plate retracts into the mounting groove, exposing the blade to cut the tape. After cutting, the elastic element returns to its original shape, and the protective plate re-extends to cover the blade.

[0005] CN 2887807Y discloses a novel tape cutter that conceals the cutter head using a retractable cover. Its main structure includes a cutter base with a tape pulley, a cutting blade, and a retractable cover. The cover is positioned adjacent to the blade, above the blade edge, and has an inner groove in which the blade holder is located. A spring is installed within the cover to ensure it remains covering the blade when no external force is applied.

[0006] Currently, there are tape cutters on the market with concealed blades. These products achieve blade concealment by configuring an additional protective plate or movable cover. However, in actual use, when cutting tape, users need to exert some force to push open the protective plate to expose the blade, while simultaneously applying another portion of force to cut the tape with the blade. This design not only complicates the product structure but also increases operational inconvenience. Utility Model Content

[0007] In order to solve the technical problems in the prior art, this utility model provides a tape cutter and a safety blade module.

[0008] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a tape cutter with a concealable blade, comprising:

[0009] The housing has an internal cavity for accommodating the tape roll, and one end has a forward-opening end recess.

[0010] The cutter head module is rotatably disposed within the end cavity;

[0011] The cutter head module includes a cutter holder, a blade, and a support plate; the support plate is connected to the cutter holder and extends forward.

[0012] The tool holder is provided with a mounting groove, and the blade is fixed in the mounting groove;

[0013] The tool holder is hinged to the end cavity via a pivot, and an elastic reset member is connected between its bottom and the inner wall of the end cavity.

[0014] A protective wall is provided at the front end of the end cavity;

[0015] Under the natural force of the elastic reset member, the blade module is in a hidden position, at which time the blade is located inside the protective wall and its cutting edge does not extend beyond the upper edge of the protective wall;

[0016] When the tape is pulled out and pulled downward, it adheres to the support plate and overcomes the force of the elastic reset member, causing the cutter module to rotate downward around the pivot axis, so that the blade extends from the rear of the protective wall to the front and upward to contact and cut the tape.

[0017] A further preferred embodiment of this utility model is as follows: the mounting groove includes a sliding groove and a sliding cavity, the sliding groove and the sliding cavity are connected, the blade is bent to form at least one bending structure, the blade is inserted laterally into the sliding groove and the sliding cavity, and is confined within the sliding groove and the sliding cavity by the bending structure.

[0018] A further preferred embodiment of this invention is that the blade includes a blade body and a serrated structure.

[0019] A further preferred embodiment of this invention is that the surface of the support sheet is rough or has anti-slip texture.

[0020] A further preferred embodiment of this utility model is that the elastic reset member is a spring, which abuts against the inner wall of the tool holder and the end cavity respectively.

[0021] A further preferred embodiment of this utility model is that the upper edge of the protective wall is an inwardly rolled arc shape.

[0022] A further preferred embodiment of this utility model is: a limiting block is provided on the tool holder, and when the tool head module rotates to the cutting position, the limiting block abuts against the corresponding structure in the end cavity to limit its excessive rotation.

[0023] Another preferred subject: a safety blade module for a tape cutter, comprising: a blade holder rotatably mounted on the housing of the tape cutter via a pivot;

[0024] A support plate, connected to the tool holder and extending forward, has its surface configured for tape adhesion;

[0025] The blade is fixed to the blade holder;

[0026] An elastic reset element is used to provide a torsional force to the tool holder, causing it to turn into a concealed position;

[0027] The cutter head module has the following features:

[0028] Concealed state: Under the action of the elastic reset member, the blade holder drives the blade to retract to the inside of the protective wall, so that the cutting edge of the blade is covered;

[0029] Working state: When the tape adheres to the support plate and is pulled downward, its tension drives the blade holder to rotate around the pivot against the force of the elastic reset member, causing the blade to extend forward and upward from the rear of the protective wall.

[0030] A further preferred embodiment of this invention is that the surface of the support sheet has a rough surface or anti-slip texture to increase friction.

[0031] A further preferred embodiment of this utility model is that the blade is fixed to the blade holder in a detachable manner, specifically by screw locking or snap-fit ​​connection.

[0032] Compared with existing technologies, the advantages of this invention are as follows: First, through the design of the rotatable blade module and the elastic reset component, the blade automatically retracts into the inner side of the protective wall when not in use, effectively avoiding the safety hazards caused by exposed blades and significantly improving safety. Second, during cutting operations, the user only needs to pull the tape normally; the tape adheres to the support plate and pulls downwards, automatically driving the blade module to rotate and extend the blade to complete the cut. No additional force is required to operate the safety device, simplifying the operation and improving ease of use and efficiency. Furthermore, the structure is rationally and compactly designed, reducing redundant components and manufacturing complexity, while ensuring the smoothness and reliability of the cutting process and improving the user experience. Attached Figure Description

[0033] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be construed as limiting the scope of the present invention. Furthermore, unless specifically indicated, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated depictions, and the drawings are not necessarily drawn to scale.

[0034] Figure 1 This is a schematic diagram of the overall structure of the tape cutter in Example 1. Figure 1 ;

[0035] Figure 2 This is a schematic diagram of the overall structure of the tape cutter in Example 1. Figure 2 ;

[0036] Figure 3 This is a schematic diagram of a tape cutter with a built-in tape roll, as shown in Example 1.

[0037] Figure 4 This is a schematic diagram of the tape being pulled out using the tape cutter in Example 1.

[0038] Figure 5 This is a schematic diagram of the tape cutting state of the tape cutter in Example 1;

[0039] Figure 6 This is a structural disassembly diagram of the tape cutter in Example 1;

[0040] Figure 7 This is a schematic diagram of the cutter head module inside the end cavity in Embodiment 1;

[0041] Figure 8 This is a schematic diagram of the overall structure of the cutting head module in Example 1. Figure 1 ;

[0042] Figure 9 This is a schematic diagram of the overall structure of the cutting head module in Example 1. Figure 2 ;

[0043] Figure 10 This is a side view of the cutter head module in Embodiment 1;

[0044] Figure 11 Example 1 Figure 4 A magnified view of a section at point A in the middle;

[0045] Figure 12 Example 1 Figure 5 A magnified view of a section at point B in the middle;

[0046] Figure 13 This is a schematic diagram of the overall structure of the cutter head module in Example 2. Detailed Implementation

[0047] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0048] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it will not be further defined and explained in subsequent figures.

[0049] In the description of this utility model, it should be noted that the terms "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the die-cast part of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Similarly, "first" and "second" are only for ease of understanding and have no other directional meaning, and cannot be considered as limitations on this utility model.

[0050] Example 1:

[0051] like Figures 1 to 7 As shown, a blade-concealable tape cutter 100 includes a housing 10, a blade module 20, and a resilient reset member 30.

[0052] The housing 10 has a receiving cavity 11 inside for accommodating the tape roll p, and a forward-opening end cavity 12 is provided on one of its front ends. A protective wall 13 is provided at the front edge of the end cavity 12, and its upper edge forms an inwardly rolled arc structure.

[0053] like Figures 7 to 12 As shown, the blade module 20 is rotatably disposed in the end cavity 12 and includes a blade holder 21, a blade 22, and a support plate 23. The support plate 23 is connected to the blade holder 21 and extends forward. The surface of the support plate 23 is provided with a rough surface or anti-slip texture to increase the friction between it and the tape s.

[0054] The tool holder 21 is provided with a mounting groove 211 for fixing the blade 22. The mounting groove 211 is an open structure extending along the length of the tool holder 21, including a sliding groove h1 and a sliding cavity h2, which are connected. A transverse limiting rib g1 and a vertical limiting rib g2 are formed in the sliding cavity h2. The transverse limiting rib g1 abuts against the middle area of ​​one side of the blade 22, and the vertical limiting rib g2 is located at the bottom of the sliding cavity h2 and abuts against the bottom area of ​​the other side of the blade 22, so as to provide bidirectional stable positioning of the blade 22. The blade 22 is fixed in the mounting groove 211 and includes a blade body b1 and a serrated structure b2 provided on one side thereon.

[0055] The tool holder 21 is hinged to the end cavity 12 via a pivot 01, and an elastic reset member 30 is connected between its bottom and the inner wall of the end cavity 12. The elastic reset member 30 is a spring 31, which abuts against the inner wall of the tool holder 21 and the end cavity 12 respectively to provide a reset torque to the tool holder 21, so that the blade 22 remains hidden when not in use.

[0056] Under the natural force of spring 31, the cutter head module 20 is in a state as follows: Figure 4 The blade 22 is in the concealed position shown, completely inside the protective wall 13, with its cutting edge not extending beyond the upper edge of the protective wall 13, thus avoiding the risk of accidental cuts caused by an exposed blade. When the user pulls out the tape s and pulls it downwards, as... Figure 5 As shown, the tension of the tape s causes it to adhere to the support plate 23 and overcomes the restoring force of the spring 31, driving the cutter module 20 to rotate downward around the rotating shaft 01, so that the blade 22 extends forward and upward from the rear of the protective wall 13 and contacts the tape s to achieve cutting.

[0057] like Figure 10 As shown, a limit block v is provided on the tool holder 21. When the tool head module 20 rotates to the cutting position, the limit block v abuts against the corresponding structure in the end cavity 12 to prevent the tool head module 20 from rotating excessively and affecting the cutting stability.

[0058] More preferably, the blade 22 can be detachably fixed to the blade holder 21 by means of screw locking or snap-on structure, so as to facilitate blade replacement.

[0059] With the above structure, the tape cutter 100 can automatically extend the blade 22 to cut the tape when in use; when not in use, the blade 22 is automatically hidden, which significantly improves the safety and convenience during use.

[0060] In actual use, after the user inserts the tape roll p into the receiving cavity 11, they can directly perform the following operations:

[0061] First, such as Figure 4As shown, the user pulls the tape s from the front end of the tape roll p and naturally pulls it forward to the vicinity of the cutter head module 20.

[0062] At this time, the blade 22 is still completely hidden. Because the elastic reset member 30 continuously applies a reset force to the blade holder 21, the blade holder 21 is in an upward posture, and the blade 22 is completely blocked inside the protective wall 13, so as not to accidentally injure the user.

[0063] There is no need to worry about accidentally touching the blade before operation, which improves safety; it avoids the risk of your hand coming into contact with the blade when pulling out tape with traditional cutters.

[0064] Secondly, such as Figure 5 As shown, when the tape s is pulled to the front end of the support plate 23, the adhesive surface of the tape s comes into full contact with the rough surface of the support plate 23, achieving reliable adhesion. The large adhesion area significantly increases friction, ensuring that the tape can effectively drive the blade holder 21; avoiding the situation in traditional structures where the protective plate blocks the smooth contact with the blade.

[0065] When the user pulls the tape s downwards, the tension is transmitted to the support plate 23, thereby causing the entire cutter head module 20 to rotate downwards around the shaft 01. During this process, the support plate 23 acts as the force input end, the shaft 01 is the rotation center, and the blade 22 rotates from the hidden position to the cutting position.

[0066] Based on the above technical means, users only need to perform a normal "pull down the tape" action to extend the blade. After the tape is cut, the user no longer needs to apply downward pulling force, and the blade 22 will retract back into the protective wall 13. This prevents the blade from being exposed for a long time, reducing the risk of accidental injury, and also avoids the blade 22 from scratching desktops, clothing, and documents.

[0067] Example 2:

[0068] Example 2 is basically the same as Example 1. The only difference in this example is the way the blade 22 is fixed in the mounting groove 211. The rest of the structure and working principle are the same as in Example 1, and will not be described again.

[0069] like Figure 13 As shown, in this embodiment, the mounting groove 211 includes a sliding groove h1 and a sliding cavity h2, which are connected. The blade 22 is bent to form at least one bending structure e. The blade 22 is inserted laterally into the sliding cavity h2 through the sliding groove h1 and abuts against the inner wall of the mounting groove through the bending structure e, thereby limiting and fixing the blade 22. This structure does not require the setting of a transverse limiting rib g1 and a vertical limiting rib g2; positioning can be achieved through the bending structure, keeping the blade 22 stable within the mounting groove.

[0070] In this embodiment, the blade 22 is reliably snapped and fixed by the bending structure e, which simplifies the internal structure of the tool holder 21, facilitates processing and manufacturing, and maintains good stability.

[0071] This article uses specific examples to describe the concealable blade tape cutter and safety blade module provided by this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A blade concealable tape cutter characterized by, include: The housing has an internal cavity for accommodating the tape roll, and one end has a forward-opening end recess. The cutter head module is rotatably disposed within the end cavity; The cutter head module includes a cutter holder, a blade, and a support plate; the support plate is connected to the cutter holder and extends forward. The tool holder is provided with a mounting groove, and the blade is fixed in the mounting groove; The tool holder is hinged to the end cavity via a pivot, and an elastic reset member is connected between its bottom and the inner wall of the end cavity. A protective wall is provided at the front end of the end cavity; Under the natural force of the elastic reset member, the blade module is in a hidden position, at which time the blade is located inside the protective wall and its cutting edge does not extend beyond the upper edge of the protective wall; When the tape is pulled out and pulled downward, it adheres to the support plate and overcomes the force of the elastic reset member, causing the cutter module to rotate downward around the pivot axis, so that the blade extends from the rear of the protective wall to the front and upward to contact and cut the tape.

2. The blade-concealable tape cutter according to claim 1, characterized in that, The mounting groove includes a sliding groove and a sliding cavity. The sliding groove communicates with the sliding cavity. The blade is bent to form at least one bending structure. The blade is inserted laterally into the sliding groove and the sliding cavity and is confined within the sliding groove and the sliding cavity by the bending structure.

3. The blade-concealable tape cutter according to claim 1, characterized in that, The blade includes a blade body and a serrated structure.

4. The blade concealable tape cutter of claim 1, wherein, The surface of the support sheet is rough or has anti-slip texture.

5. The blade concealable tape cutter of claim 1, wherein, The elastic reset element is a spring, which abuts against the inner wall of the tool holder and the end cavity, respectively.

6. A blade concealable tape cutter according to claim 1, wherein, The upper edge of the protective wall is an inwardly rolled arc.

7. A blade concealable tape cutter according to claim 1, wherein The tool holder is equipped with a limiting block. When the tool head module rotates to the cutting position, the limiting block abuts against the corresponding structure in the end cavity to limit its excessive rotation.

8. A safety blade module for a tape cutter, characterized by include: The blade holder is rotatably mounted on the housing of the tape cutter via a pivot. A support plate, connected to the tool holder and extending forward, has its surface configured for tape adhesion; The blade is fixed to the blade holder; An elastic reset element is used to provide a torsional force to the tool holder, causing it to turn into a concealed position; The cutter head module has the following features: Concealed state: Under the action of the elastic reset member, the blade holder drives the blade to retract to the inside of the protective wall, so that the cutting edge of the blade is covered; Working state: When the tape adheres to the support plate and is pulled downward, its tension drives the blade holder to rotate around the pivot against the force of the elastic reset member, causing the blade to extend forward and upward from the rear of the protective wall.

9. A safety blade module for a tape cutter according to claim 8, wherein, The surface of the support plate has a rough surface or anti-slip texture to increase friction.

10. A safety blade module for a tape cutter according to claim 8, wherein, The blade is detachably fixed to the blade holder, specifically by screw locking or snap-fit ​​connection.

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