A glass cutter

Abstract

The utility model discloses a glass cutter which belongs to the cutter technical field, and comprises a handle and a cutter head, the first end of the handle is connected with the cutter head, a finger fixing part is arranged on one side of the handle close to the first end, and a finger through hole is formed through the middle part of the finger fixing part. The finger through hole generated by the finger fixing part conforms to the holding habit of ergonomics, so that the hand muscles of the user are relaxed during operation, even if the glass is continuously cut for a long time, the tension degree of the hand muscles and the fatigue accumulation speed are reduced, the comfort degree of operation is improved, and the efficiency of long-time work is improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and in particular to a glass cutter. Background Technology

[0002] Glass cutters, widely used tools in the glass processing field, are primarily used for cutting glass. They can divide a whole piece of glass into different sizes and shapes according to specific needs, in order to meet the diverse requirements of various industries such as construction, decoration, and crafts.

[0003] Currently, the most common type of glass cutter on the market is the pen-shaped glass cutter. A pen-shaped glass cutter typically has a slender, pen-shaped casing with a cutting head attached to one end. This cutting head is usually made of a hard material, such as diamond, to scratch the glass surface. The overall design of the pen-shaped glass cutter resembles the shape of a pen, aiming to mimic people's everyday pen-holding habits for ease of use.

[0004] However, in actual use, the pen-shaped glass cutter, due to its pen-like design, lacks a clear point of leverage when held. When users hold the pen-shaped glass cutter for extended periods of time for cutting, their hand muscles must remain in a state of constant tension, making it difficult to find a comfortable and stable support point to distribute the pressure on their hands, which can easily lead to hand fatigue. Utility Model Content

[0005] The purpose of this utility model is to provide a glass cutter to solve the technical problem that the glass cutter in the prior art is not comfortable to hold and easily causes fatigue to the user.

[0006] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0007] A glass cutter, comprising:

[0008] The knife handle has a blade connected to its head at one end. A finger fixing part is provided on one side of the knife handle near the head end, and a finger perforation is formed through the middle of the finger fixing part.

[0009] Preferably, a finger support is provided on the other side of the handle near the head end, the finger support including a force-bearing inclined surface that slopes outward from the tail end of the handle toward the head end.

[0010] Preferably, the finger hole and the force-bearing inclined surface are located on opposite sides of the tip of the handle.

[0011] Preferably, the inclined surface subjected to force is provided with anti-slip texture.

[0012] Preferably, a counterweight is connected to the tail end of the tool holder.

[0013] Preferably, the counterweight is in the shape of a solid sphere or a ring;

[0014] When the counterweight is in the shape of a ring, the axis of the counterweight is perpendicular to the axis of the handle, and a hook-and-loop hole is formed through the middle of the counterweight.

[0015] Preferably, the finger fixing part is annular, with a portion of the finger fixing part embedded in the handle and a portion of the finger fixing part protruding radially from the handle.

[0016] Preferably, the outer surface of the knife handle is covered with an anti-slip sleeve.

[0017] Preferably, the inner surface of the finger piercing is provided with an anti-slip layer.

[0018] Preferably, at least a portion of the radial cross-sectional area of ​​the knife handle gradually decreases and then gradually increases, forming a gripping arc-shaped surface on the outer surface of the knife handle.

[0019] The beneficial effects of this utility model are:

[0020] This invention proposes a glass cutter with a finger-fixing part. A centrally located finger perforation is incorporated on one side of the handle near the tip, allowing the user to naturally insert their index or middle finger through the perforation. This creates an effective contact surface between the finger joint and the inner wall of the perforation, providing an ergonomically designed support point. This departs from the traditional pen-shaped glass cutter's reliance on friction between the fingers and the smooth handle for grip. When applying downward pressure and traction during glass cutting, the enveloping constraint of the finger perforation effectively prevents the hand from sliding on the handle, ensuring more precise force transmission along the blade tip. Furthermore, the finger-fixing part guides the user to adopt a grip posture more aligned with the natural flexion and extension of the hand, relaxing hand muscles. Even during prolonged continuous glass cutting, muscle tension and fatigue accumulation are reduced, improving operational comfort and increasing efficiency during extended work sessions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the glass cutter provided in this embodiment of the utility model.

[0022] In the picture:

[0023] 10. Handle; 101. Prong end; 102. Tail end; 11. Finger support; 12. Finger fixing part; 13. Force-bearing inclined surface; 14. Finger perforation; 15. Anti-slip texture; 20. Blade head; 30. Counterweight; 31. Hook perforation. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] See Figure 1 The glass cutter provided in this embodiment of the utility model includes a handle 10 and a blade head 20. The blade head 20 is connected to the first end 101 of the handle 10. A finger fixing part 12 is provided on the side of the handle 10 near the first end 101. A finger through hole 14 is formed in the middle of the finger fixing part 12.

[0029] The glass cutter of this invention features a finger-fixing part 12 with a centrally pendant finger hole 14 on one side of the handle 10 near the tip 101. This allows the user to naturally pass their index or middle finger through the finger hole 14 when gripping the handle 10, creating an effective contact surface between the finger joint and the inner wall of the finger hole 14. This provides the user with an ergonomically fixed point of support, changing the traditional pen-shaped glass cutter's reliance on friction between the fingers and the smooth handle for grip. When applying downward pressure and traction to cut glass, the encircling restraint of the finger hole 14 effectively prevents the hand from sliding on the handle 10, allowing the user's force to be transmitted more precisely along the blade tip 20. Simultaneously, the finger-fixing part 12 guides the user to adopt a grip posture that better conforms to the natural flexion and extension of the human hand, allowing hand muscles to relax. Even during prolonged continuous glass cutting, the degree of hand muscle tension and the rate of fatigue accumulation are reduced, thereby improving operational comfort and increasing efficiency during extended work periods.

[0030] The specific structure of this glass cutter is described below.

[0031] The handle 10 serves as the main structure of the entire glass cutter, serving both to house the blade 20 and the finger fixing part 12, and to facilitate the user's grip.

[0032] Specifically, the cross-sectional shape of the handle 10 along its radial direction is rectangular or circular. When the cross-sectional shape of the handle 10 along its radial direction is rectangular, the sides and corners of the rectangle can provide the user with clear grip boundaries and support points, making it easier for the user to grasp the grip position and force, so that the user can better control the direction of force during the cutting process and improve the cutting accuracy.

[0033] When the handle 10 has a circular cross-sectional shape along its radial direction, the circular surface is smooth, allowing the user's hand to fit naturally when holding it, reducing local pressure concentration on the hand, and making it less tiring to use for a long time. In addition, the circular cross-section distributes force relatively evenly in all directions, making it easier for the user to cut glass at different angles, meeting the diverse needs of different users for grip feel, and improving the applicability of the glass cutter.

[0034] In actual use, tool holders 10 with different radial cross-sectional shapes can be selected according to the actual use scenario and needs, without any limitation.

[0035] Optionally, to improve the safety of the handle 10, the corners of the handle 10 are rounded to prevent sharp corners from scratching the user's hands.

[0036] Specifically, at least a portion of the handle 10 has a radial cross-sectional area that gradually decreases and then gradually increases, forming a gripping arc surface on the outer surface of the handle 10. The gripping arc surface conforms to the physiological curve of the hand when it is naturally closed, providing the user with a comfortable grip, distributing hand pressure, reducing fatigue during prolonged use, and also helping the user to hold the glass cutter more steadily, thus improving the stability and accuracy of the cutting operation.

[0037] Optionally, the outer surface of the handle 10 is fitted with an anti-slip sleeve. The anti-slip sleeve can increase the coefficient of friction of the palm contact surface, effectively preventing slippage caused by hand sweat or oil; at the same time, its elastic properties can absorb the vibration and impact transmitted to the hand during striking operations, reducing muscle fatigue caused by prolonged holding.

[0038] The anti-slip cover can be made of materials such as rubber or silicone, which will not be elaborated here.

[0039] The finger fixing part 12 is annular, with part of it embedded in the handle 10 and part of it protruding radially from the handle 10. The annular fixing part conforms to the shape of the fingers, forming a full circumferential wrap around the thumb pad, evenly distributing grip pressure and avoiding localized compression. The part of the finger fixing part 12 embedded in the handle 10 enhances the overall structural integrity, improving the space utilization and aesthetics of the glass cutter. The part of the finger fixing part 12 protruding from the handle 10 forms a clear tactile boundary, allowing the index finger to quickly locate the blade blindly.

[0040] Optionally, the inner surface of the finger piercing 14 is provided with an anti-slip layer. The anti-slip layer increases the frictional resistance between the inner wall of the finger piercing 14 and the index finger, effectively suppressing the axial slippage of the index finger in the finger piercing 14 when cutting force or knocking vibration is applied; at the same time, the flexible nature of the anti-slip layer can buffer the impact force, reduce the pressure on the index finger joint during long-term operation, and improve the user's comfort during use.

[0041] The anti-slip layer can be made of rubber pads, silicone pads, or rough plastic coatings, etc., which will not be elaborated here.

[0042] To further improve the comfort of holding the glass cutter, a finger support 11 is provided on the other side of the handle 10 near the head 101. The finger support 11 includes a force-bearing inclined surface 13 that slopes outward from the tail end 102 of the handle 10 toward the head 101.

[0043] The force-bearing inclined surface 13 can conform to the natural curvature of the user's thumb pad. When the thumb is in contact with the force-bearing inclined surface 13, the force-bearing inclined surface 13 converts the cutting pressure into a positive support force perpendicular to the force-bearing inclined surface 13, so that the user's knuckles are stably supported, avoiding the problem of excessive local pressure on the fingertips when holding a traditional pen.

[0044] Optionally, the finger perforation 14 and the force-receiving inclined surface 13 are located on opposite sides of the tip 101 of the handle 10, so that when the user holds the handle 10, with the index finger passing through the finger perforation 14 and the thumb pressing on the force-receiving inclined surface 13, a stable and balanced grip can be formed. The index finger and thumb provide mutually balancing forces from opposite sides, making the grip on the glass cutter more secure, the force applied during cutting more precise and controllable, and reducing unnecessary hand exertion, effectively reducing hand fatigue.

[0045] In summary, when operating this glass cutter, the user's hand can form a three-point grip structure: the index finger inserts into the finger hole 14, the thumb presses against the force-bearing inclined surface 13, and the hand grips the handle 10. This allows for a stable and comfortable grip on the glass cutter during cutting. The structure of this glass cutter conforms to ergonomic grip habits, keeping the user's hand muscles relaxed, delaying fatigue, preventing the glass cutter from wobbling during operation, and improving cutting accuracy.

[0046] Furthermore, anti-slip texture 15 is provided on the force-bearing inclined surface 13. The anti-slip texture 15 further increases the frictional resistance, effectively preventing fingers from slipping when force is applied, and improving the convenience and comfort of the user during use.

[0047] Specifically, the anti-slip texture 15 is at least one of dot-shaped protrusions, strip-shaped protrusions, or corrugated protrusions. Dot-shaped protrusions can achieve uniform gripping force in multiple directions, adapting to the anti-slip needs at any grip angle; strip-shaped protrusions can be oriented along the direction of force application, enhancing the anti-slip ability during longitudinal cutting; corrugated protrusions can increase the contact area through a continuous undulating surface, dispersing the pressure on the fingertips. All three types of anti-slip texture 15 can effectively suppress the risk of slippage caused by hand sweat or oil, ensuring that the fingers are stably positioned on the force-bearing inclined surface 13 when cutting.

[0048] In this embodiment, the anti-slip texture 15 is a strip-shaped protrusion extending radially along the handle 10, with multiple strip-shaped protrusions spaced apart axially along the handle 10. The radially extending strip-shaped protrusions are perpendicular to the finger grip direction, effectively preventing axial sliding of the fingers on the inclined surface 13, enhancing the friction between the fingers and the inclined surface 13, allowing the user to hold the glass cutter more steadily when cutting glass, ensuring the accuracy of the cutting operation. The multiple strip-shaped protrusions spaced apart axially provide uniform friction across the entire inclined surface 13 and help distribute hand pressure, making the hand more comfortable during prolonged gripping.

[0049] The cutting head 20 is located at the head end 101 of the handle 10 and is used to contact and scratch glass. The cutting head 20 includes a rectangular main body structure and a pointed tip structure located on the main body structure and at the end of the main body structure away from the handle 10. The main body structure is used to connect to the head end 101 of the handle 10. The main body structure and the pointed tip structure are integrally formed. The pointed tip structure is used to effectively cut the glass surface and ensure the smooth progress of the cutting operation.

[0050] Specifically, the handle 10 has a receiving groove inside, which extends through the head end 101 along the axial direction of the handle 10. The cutter head 20 is slidably connected to the receiving groove and can be locked in the receiving groove. The slidability of the cutter head 20 allows its position to be flexibly adjusted according to actual cutting needs. For example, when cutting glass of different thicknesses and shapes, the optimal cutting point can be found by adjusting the extension length or position of the cutter head 20, improving the applicability and accuracy of the cutting. After completing the cutting operation, the cutter head 20 can also be stored in the receiving groove for easy placement of the glass cutter, preventing the cutter head 20 from accidentally injuring the user. The fact that the cutter head 20 can be locked in the receiving groove ensures the stability of the cutter head 20 during the cutting process, preventing the cutter head 20 from shaking and affecting the cutting effect, thus ensuring the cutting quality.

[0051] Optionally, the receiving groove has a rectangular cross-section and four sides. The rear end of the cutter head 20 matches the shape of the receiving groove, allowing it to be inserted and slide along the axial direction of the receiving groove. A guide groove is formed along the axial direction on one side of the receiving groove. A guide pin is fixedly installed on the cutter head 20 corresponding to the guide groove, allowing it to slide smoothly within the guide groove, thus guiding the sliding of the cutter head 20 and ensuring that it can only move linearly along the axial direction. On the opposite side of the receiving groove from the guide groove, a threaded hole is provided, with a set screw threaded into it. When the cutter head 20 slides to the appropriate position, the set screw is rotated, causing its end to press against the side of the cutter head 20, locking it within the receiving groove using friction. During glass cutting operations, the set screw's tightening force prevents the cutter head 20 from moving accidentally due to external forces generated during pressing, ensuring the accuracy and stability of the cutting. If the position of the cutter head 20 needs to be adjusted, simply rotate the set screw in the opposite direction to separate the end of the set screw from the cutter head 20. The cutter head 20 can then slide back into the receiving groove to meet the position requirements of the cutter head 20 in different glass cutting scenarios.

[0052] Furthermore, a counterweight 30 is connected to the tail end 102 of the handle 10. By connecting the blade head 20 and the counterweight 30 to the tail end of the handle 10 respectively, a balanced force transmission structure is formed for the glass cutter. During cutting, the counterweight 30 at the tail end 102 naturally drops, generating downward auxiliary pressure, which is transmitted axially through the handle 10 to the blade head 20 at the head end 101, reducing the pressure that the user's wrist needs to actively apply. At the same time, the counterweight 30 also has a striking function. After the glass is scratched, the user can directly hold the handle 10 and use the counterweight 30 at the tail end 102 to strike the scratched area to separate the glass. Through the above design, the cutting and striking functions are integrated into the glass cutter, improving its functionality and practicality.

[0053] Specifically, the counterweight 30 can be a solid sphere or a ring. When the counterweight 30 is a solid sphere, it enhances the striking effect on the glass. When the counterweight 30 is a ring, its axis is perpendicular to the axis of the handle 10, and a hook-and-loop hole 31 is formed through the center of the counterweight 30. The ring-shaped counterweight 30 optimizes mass distribution when striking the glass, ensuring stable transmission of striking torque. Simultaneously, the smooth surface of the ring-shaped counterweight 30 effectively disperses stress, preventing the glass from breaking due to excessive stress at a single point. The hook-and-loop hole 31 formed through the center of the counterweight 30 allows the glass cutter to be hooked onto a belt or hook, improving its convenience.

[0054] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A glass cutter, characterized in that, include: The handle (10) has a blade (20) connected to its head (101). A finger fixing part (12) is provided on the side of the handle (10) near the head (101), and a finger perforation (14) is formed through the middle of the finger fixing part (12).

2. The glass cutter according to claim 1, characterized in that, A finger support (11) is also provided on the other side of the handle (10) near the head end (101). The finger support (11) includes a force-bearing inclined surface (13) that slopes outward from the tail end (102) of the handle (10) toward the head end (101).

3. The glass cutter according to claim 2, characterized in that, The finger piercing hole (14) and the force-bearing inclined surface (13) are located on opposite sides of the head end (101) of the handle (10).

4. The glass cutter according to claim 2, characterized in that, The inclined surface (13) under stress is provided with anti-slip texture (15).

5. The glass cutter according to claim 1, characterized in that, The tail end (102) of the handle (10) is connected to a counterweight (30).

6. The glass cutter according to claim 5, characterized in that, The counterweight (30) is in the shape of a solid sphere or a ring; When the counterweight is in the shape of a ring, the axis of the counterweight (30) is perpendicular to the axis of the handle (10), and the center of the counterweight (30) forms a hook-and-loop hole (31).

7. The glass cutter according to claim 1, characterized in that, The finger fixing part (12) is annular, part of the finger fixing part (12) is embedded in the handle (10), and part of the finger fixing part (12) protrudes radially from the handle (10).

8. The glass cutter according to claim 1, characterized in that, The outer surface of the handle (10) is covered with an anti-slip sleeve.

9. The glass cutter according to claim 1, characterized in that, The inner surface of the finger piercing (14) is provided with an anti-slip layer.

10. The glass cutter according to claim 1, characterized in that, At least part of the radial cross-sectional area of ​​the handle (10) gradually decreases and then gradually increases, forming a gripping arc surface on the outer surface of the handle (10).

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