Blade quick release structure

Abstract

The utility model discloses a blade quick release structure. The structure is composed of an upper shell, a ceramic bead, a button seat, a locking column, a spring, a lower shell and a blade, the ceramic bead, the button seat, the locking column and the spring form a combined module, and the combined module is stacked in an upper cavity formed in the upper shell and a lower cavity formed in the lower shell in an axis alignment mode. The outer diameter of the combined module is smaller than the inner diameter of the cavity, and the diameter of the ceramic bead is larger than the opening of the upper shell. The protruding end of the button seat and the upper end face of the locking column form a contact face A. When not stressed, the contact face is higher than the blade installation position to lock the blade. When the ceramic beads are pressed, the combined module moves axially, and the blade can be disassembled and assembled when the contact face A is flush with the installation position. In addition, the button seat and the locking column form a space for mounting and dismounting the blade in the upper cavity. By means of the structure, the blade can be efficiently disassembled and assembled, the locking protection function is achieved, and operation convenience and safety are improved.

Description

Technical Field

[0001] The invention relates to the technical field of utility knives, and in particular provides a blade quick-detachment structure.

[0002] The invention also relates to a method for locking the blade of a utility knife. Background Art

[0003] The utility knife has a long history, evolving into a variety of forms and functions as humanity's demand for fine processing and artistic creation continues to grow. Today, utility knives are widely used in printing, packaging, handicrafts, art creation, and other fields, becoming an indispensable tool in people's daily lives. The blades of utility knives are usually very sharp and can easily cut through a wide range of materials. At the same time, as consumables, blades must be replaced frequently, and sharp blades can inadvertently cause harm to the human body. Currently, some utility knives on the market use screws to fasten blades, making blade replacement difficult. Some utility knives have quick-release blades and are easy to replace, but lack blade locking and protection, posing a risk of accidental injury to users while carrying them.

[0004] Therefore, an innovative quick-release blade mechanism is urgently needed that not only allows for efficient blade removal and installation, but also provides a locking and protective function. This ensures that the blade is securely locked to the blade holder after installation, effectively preventing accidental injuries caused by loosening or slipping due to accidental contact or vibration. Through this carefully designed quick-release mechanism, we aim to provide users with a convenient and safe operating experience. Summary of the Invention

[0005] This application provides a blade quick-release structure to solve the problem of difficult assembly and disassembly caused by frequent blade replacement of current utility knives, as well as the potential safety hazards faced by users during use. To solve the above technical difficulties, the embodiments of this application disclose the following technical solutions:

[0006] A blade quick-release structure, characterized in that it comprises an upper shell (5), a ceramic bead (1), a button seat (2), a locking column (3), a spring (4), a lower shell (6) and a blade (7); wherein the ceramic bead (1), the button seat (2), the locking column (3) and the spring (4), as a combined module, are centrally aligned in an upper cavity (51) and a lower cavity (61) provided in the upper shell (5) and the lower shell (6), and are stacked in order from top to bottom.

[0007] Preferably, the ceramic bead (1), the button seat (2), the locking column (3) and the spring (4) form a combined module, the outer diameter of the combined module is smaller than the inner diameter of the upper cavity (51) provided in the upper shell (5) and the lower cavity (61) provided in the lower shell (6), and the diameter of the ceramic bead (1) is larger than the opening φ5 (2) of the upper shell (5), so that the combined module can be axially displaced in the upper cavity (51) and the lower cavity (61).

[0008] Preferably, the positional relationship of the combination modules is as follows: the ceramic bead (1) is confined in the groove (21) of the button seat (2); the protruding end (22) of the button seat (2) forms a contact surface A with the upper end surface (31) of the cylindrical locking column (3); the inner recessed end (33) of the locking column (3) is provided with a spring (4); the combination modules are stacked in order from top to bottom with their centers aligned; when the ceramic bead (1) is subjected to force, the combination modules can make axial displacement along the upper cavity (51) and the lower cavity (61).

[0009] Preferably, the contact surface A between the protruding end (22) of the button seat (2) and the upper end surface (31) of the locking column (3) is higher than the blade (7) installation position (62) when no force is applied, thereby locking the blade (7); when the ceramic bead (1) is pressed with a certain force, the combined module is axially displaced in the upper cavity (51) and the lower cavity (61) along the direction of the force; when the contact surface A is displaced to be flush with the blade (7) installation position (62), the blade (7) can pass through the gap between the upper shell (5) and the lower shell (6), thereby realizing the removal and installation of the blade (7); secondly, a small gap is left between the locking surface (32) of the locking column (3) and the U-shaped installation hole of the blade (7) to limit the blade (7).

[0010] Preferably, the button seat (2) and the locking column (3) form a space in the upper cavity (51) for installing and removing the blade (7).

[0011] The beneficial effects of the present invention are:

[0012] The present application provides a blade quick-release structure to solve the problem of difficult disassembly and assembly of current utility knives due to frequent blade replacement, as well as the potential safety hazards faced by users during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of this application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1Direction 1 of the exploded view of a quick-release structure of a utility knife blade provided in an embodiment of the present application.

[0015] Figure 2 Direction 2 of the exploded view of a quick-release structure of a utility knife blade provided in an embodiment of the present application.

[0016] Figure 3 Direction 1 is a cross-sectional view of a quick-release structure of a utility knife blade provided in an embodiment of the present application. DETAILED DESCRIPTION

[0017] In order to enable people skilled in the art to better understand the technical solutions in this application, the technical solutions in the implementation cases of this application will be clearly and completely described below in combination with the drawings in the embodiments of this application. The described embodiments are only part of the embodiments of this application, not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of this application.

[0018] The present invention will be further described below with reference to specific embodiments:

[0019] See also Figures 1 to 3 A blade quick-release structure, characterized in that it comprises an upper shell (5), a ceramic bead (1), a button seat (2), a locking column (3), a spring (4), a lower shell (6) and a blade (7). The ceramic bead (1), the button seat (2), the locking column (3) and the spring (4), as a combined module, are centrally aligned in an upper cavity (51) provided in the upper shell (5) and a lower cavity (61) provided in the lower shell (6), and are stacked in order from top to bottom. The combined module also includes a contact surface A formed by a protruding end (22) of the button seat (2) and an upper end surface (31) of the cylindrical locking column (3), and a locking surface (32) of the locking column 3.

[0020] Follow the steps below to install:

[0021] Insert the blade (7) into the blade mounting surface (62) of the lower housing (6), with the U-shaped mounting hole of the blade (7) aligned with the center of the lower cavity (61);

[0022] The spring (4) is vertically placed in the lower cavity (61) provided in the lower housing (6);

[0023] The locking column (3) is placed vertically with the recessed end (33) facing downward into the lower cavity (61) provided in the lower shell (6), and the locking column (3) is aligned with the spring (4) and the lower cavity (61) in a stacked manner;

[0024] Place the button base (2) with the protruding end (22) facing downwards vertically on the upper end surface (31) of the locking column (3) and align the center with the locking column (3);

[0025] Install the ceramic bead (1) into the upper shell (5) so that the ceramic bead (1) is aligned with the center of the mounting hole φ5 (2) of the upper shell (5);

[0026] The positioned upper shell (5) and the ceramic bead (1) are simultaneously placed on top of the lower shell (6), and the ceramic bead (1) is confined in the recessed end (21) of the button seat (2), and finally the upper cavity (51) of the upper shell (5) and the lower cavity (61) of the lower shell (6) are aligned in center;

[0027] After the above assembly steps, the upper shell (5) and the lower shell (6) are finally fixed by screws, interference fit or gluing.

[0028] During use, when the ceramic bead (1) is pressed with a certain force, the combined module is axially displaced in the upper cavity (51) and the lower cavity (61) along the direction of the force. When the contact surface A between the protruding end (22) of the button seat (2) and the upper end surface (31) of the locking column (3) is displaced to be flush with the installation position (62) of the blade (7), the blade (7) can pass through the gap between the upper shell (5) and the lower shell (6), thereby realizing the removal and installation of the blade (7); when the ceramic bead (1) is not subjected to force, the contact surface A is higher than the installation position (62) of the blade (7), and the blade (7) is locked.

[0029] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A blade quick-release structure, characterized by: The invention comprises an upper shell (5), a ceramic bead (1), a button seat (2), a locking column (3), a spring (4), a lower shell (6) and a blade (7); wherein the ceramic bead (1), the button seat (2), the locking column (3) and the spring (4), as a combined module, are centrally aligned in an upper cavity (51) and a lower cavity (61) provided in the upper shell (5) and the lower shell (6), and are stacked in order from top to bottom.

2. The blade quick-release structure according to claim 1, characterized in that: The ceramic bead (1), the button seat (2), the locking column (3) and the spring (4) form a combined module. The outer diameter of the combined module is smaller than the inner diameter of the upper cavity (51) provided in the upper shell (5) and the lower cavity (61) provided in the lower shell (6), and the diameter of the ceramic bead (1) is larger than the opening φ5 (2) of the upper shell (5), so that the combined module can be axially displaced in the upper cavity (51) and the lower cavity (61).

3. The blade quick-release structure according to claim 1, characterized in that: The positional relationship of the combination modules is as follows: the ceramic bead (1) is confined in the groove (21) of the button seat (2); the protruding end (22) of the button seat (2) forms a contact surface A with the upper end surface (31) of the cylindrical locking column (3); the inner recessed end (33) of the locking column (3) is equipped with a spring (4); the combination modules are stacked in order from top to bottom with their centers aligned; when the ceramic bead (1) is subjected to force, the combination modules can make axial displacement along the upper cavity (51) and the lower cavity (61).

4. The blade quick-release structure according to claim 1, characterized in that: The contact surface A between the protruding end (22) of the button seat (2) and the upper end surface (31) of the locking column (3) is higher than the blade (7) installation position (62) when no force is applied, thereby locking the blade (7); when the ceramic bead (1) is pressed with a certain force, the combined module is axially displaced in the upper cavity (51) and the lower cavity (61) along the direction of the force; when the contact surface A is displaced to be flush with the blade (7) installation position (62), the blade (7) can pass through the gap between the upper shell (5) and the lower shell (6), thereby realizing the removal and installation of the blade (7); secondly, a small gap is left between the locking surface (32) of the locking column (3) and the U-shaped installation hole of the blade (7) to limit the blade (7).

5. The blade quick-release structure according to claim 1, characterized in that: The button seat (2) and the locking column (3) form a space in the upper cavity (51) for installing and removing the blade (7).

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