Rotary telescopic art knife

Abstract

The utility model discloses a rotary telescopic art knife, which comprises a blade, a rotary base, a blade seat and a shell, the blade is fixed on the blade seat, the blade seat is arranged on the rotary base, the shell is arranged above the rotary base, the shell is rotatably connected with the rotary base, the shell covers the outer sides of the blade and the blade seat, and the shell covers the blade seat. A blade outlet is formed in the top of the shell, the blade penetrates through the blade outlet, a spiral rail groove is formed in the inner wall of the rotating base, a protruding column is arranged on the outer side face of the blade seat, the protruding column is located in the rail groove, and the protruding column can move along the rail groove during rotation. The blade extends out and retracts in a rotating mode, and the blade can be completely retracted into the shell through rotation when not in use. A window is formed in the front portion of the shell, indicating characters are arranged on the rotating base, and when the blade extends out of the shell, the characters written on the rotating base can rotate into the window to remind a user that the blade is rotated out and can be used.

Description

Technical Field

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

[0002] Utility knives can be used to cut paper, fabric, and other items. When not in use, the exposed blade can easily cut people and other objects, and the blade is also prone to damage and dulling. Therefore, it is necessary to protect the blade. Most existing utility knives use a direct push-to-extend blade design. When in use, the blade is pushed straight out of the casing, and when not in use, the blade is retracted directly into the casing. This direct push-out design is suitable for longer blades, and there are no text indicators after the blade extends out of the casing. Utility Model Content

[0003] To address the aforementioned problems, this utility model aims to provide a rotary telescopic utility knife to solve the problem of how to extend and retract the rotary blade.

[0004] The technical problem solved by this utility model can be achieved by the following technical solution: A rotary telescopic utility knife includes a blade, a rotating base, a blade holder, and a housing. The blade is fixed on the blade holder, the blade holder is disposed on the rotating base, and the housing is disposed above the rotating base. The housing is rotatably connected to the rotating base. The housing covers the outside of the blade and the blade holder. The top of the housing is provided with a blade outlet, through which the blade passes. A spiral track groove is provided on the inner wall of the rotating base. A protruding post is provided on the outer surface of the blade holder. The protruding post is located in the track groove and can move along the track groove.

[0005] Limiting blocks are provided on both sides of the blade holder, and limiting strips are provided inside the housing. The limiting strips are located on the front and rear sides of the limiting blocks, and the limiting blocks are located above the rotating base. When the blade retracts into the housing, the lower end of the limiting block abuts against the upper edge of the rotating base.

[0006] The upper center of the rotating base is provided with an insertion hole, the lower end of the blade holder is inserted into the insertion hole, and the inner wall of the insertion hole is provided with a track groove.

[0007] A limiting plate is fixed inside the socket. The limiting plate is located below the blade holder. When the blade retracts into the housing, the lower end of the blade holder abuts against the upper end of the limiting plate.

[0008] The blade holder is provided with a blade fixing groove, and the blade is inserted into the blade fixing groove for fixation.

[0009] The front of the housing has a window, and the rotating base has indicator text. When the blade extends out of the housing, the indicator text is located inside the window.

[0010] The housing is divided into front and rear parts, which are fixedly connected. An annular groove is provided at the bottom of the interior of the housing, and an annular protrusion is provided on the rotating base. The annular protrusion is located in the annular groove, and the annular protrusion rotates within the annular groove when the rotating base is rotated.

[0011] The rotating base has clamping surfaces symmetrically arranged on its front and rear sides.

[0012] Compared with the prior art, this utility model has the following advantages: This utility model achieves the extension and retraction of the blade by rotation. When not in use, the blade can be completely retracted into the housing by rotation. There is a window on the housing for display. After the blade extends out of the housing, the word "open" written on the rotating base will turn into the window to indicate to the user that the blade has been rotated out and can be used. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the rotating base.

[0016] Figure 4 This is a schematic diagram of the blade holder structure;

[0017] In the diagram: 1-shell, 2-rotating base, 3-blade holder, 4-blade, 5-track groove, 6-protrusion, 7-window, 8-limiting block, 9-blade fixing groove, 10-limiting strip, 11-clamping surface, 12-insertion hole, 13-limiting plate, 14-annular groove, 15-annular protrusion. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0019] In the description of this utility model, it should be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "center", "end", "length", "outer end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. 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.

[0020] Combined with appendix Figures 1 to 4As shown, this embodiment discloses a rotary telescopic utility knife, including a blade 4, a rotating base 2, a blade holder 3, and a housing 1. The blade 4 is fixed on the blade holder 3, the blade holder 3 is disposed on the rotating base 2, and the housing 1 is disposed above the rotating base 2. The housing 1 is rotatably connected to the rotating base 2 and covers the outside of the blade 4 and the blade holder 3. The top of the housing 1 is provided with a blade outlet, through which the blade 4 passes. A spiral track groove 5 is provided on the inner wall of the rotating base 2, and a protrusion 6 is provided on the outer surface of the blade holder 3. The protrusion 6 is located within the track groove 5 and can move along the track groove 5 when the rotating base 2 is rotated. In use, the blade 4 is extended and retracted by rotation; when not in use, the blade 4 can be completely retracted into the housing 1 by rotation.

[0021] Limiting blocks 8 are provided on both sides of the blade holder 3, and limiting strips 10 are provided inside the housing 1. The limiting strips 10 are located on the front and rear sides of the limiting blocks 8, and the limiting strips 10 prevent rotation between the blade holder 3 and the housing 1. The limiting blocks 8 are located above the rotating base 2. When the blade 4 retracts into the housing 1, the lower end of the limiting block 8 abuts against the upper edge of the rotating base 2, and the limiting block 8 restricts the downward movement distance of the blade holder 3.

[0022] The upper center of the rotating base 2 is provided with an insertion hole 12, and the lower end of the blade holder 3 is inserted into the insertion hole 12. The inner wall of the insertion hole 12 is provided with a track groove 5. A limiting plate 13 is fixed in the insertion hole 12. The limiting plate 13 is located below the blade holder 3. When the blade 4 is retracted into the housing 1, the lower end of the blade holder 3 abuts against the upper end of the limiting plate 13.

[0023] The blade holder 3 is provided with a blade fixing groove 9. The blade holder 3 is located on one side of the limiting block 8. The blade 4 is inserted into the blade fixing groove 9 and fixed.

[0024] The housing 1 is divided into front and rear parts, which are fixedly connected. The bottom of the interior of the housing 1 is provided with an annular groove 14, and the rotating base 2 is provided with an annular protrusion 15. The annular protrusion 15 is disposed in the annular groove 14. When the rotating base 2 is rotated, the annular protrusion 15 rotates in the annular groove 14.

[0025] The front of the housing 1 has a window 7, and the rotating base 2 has indicator text such as "open" or "extend". When the blade 4 extends out of the housing 1, the "open" text on the rotating base 2 will rotate to the inside of the window 7 to indicate to the user that the blade has been extended and is ready for use.

[0026] The rotating base 2 has clamping surfaces 11 symmetrically arranged on its front and rear sides, which makes it convenient for fingers to clamp the rotating base 2 when rotating.

[0027] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the utility model. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A rotary telescopic utility knife, comprising a blade (4), a rotating base (2), a blade holder (3), and a housing (1), characterized in that: The blade (4) is fixed on the blade holder (3), the blade holder (3) is set on the rotating base (2), the housing (1) is set above the rotating base (2), the housing (1) is rotatably connected to the rotating base (2), the housing (1) covers the outside of the blade (4) and the blade holder (3), the top of the housing (1) is provided with a blade outlet, the blade (4) passes through the blade outlet, the inner wall of the rotating base (2) is provided with a spiral track groove (5), the outer surface of the blade holder (3) is provided with a protrusion (6), the protrusion (6) is located in the track groove (5), and the protrusion (6) can move along the track groove (5).

2. The rotary telescopic utility knife according to claim 1, characterized in that: Limiting blocks (8) are provided on both sides of the blade holder (3), and limiting strips (10) are provided inside the housing (1). The limiting strips (10) are located on the front and rear sides of the limiting blocks (8). The limiting blocks (8) are located above the rotating base (2). When the blade (4) retracts into the housing (1), the lower end of the limiting block (8) abuts against the upper edge of the rotating base (2).

3. The rotary telescopic utility knife according to claim 1, characterized in that: The front of the housing (1) is provided with a window (7), and the rotating base (2) is provided with indicator text. When the blade (4) extends out of the housing (1), the indicator text is located inside the window (7).

4. A rotary telescopic utility knife according to claim 1, characterized in that: The blade holder (3) is provided with a blade fixing groove (9), and the blade (4) is inserted into the blade fixing groove (9) and fixed.

5. A rotary telescopic utility knife according to claim 1, characterized in that: The rotating base (2) is provided with a socket (12), and the lower end of the blade holder (3) is inserted into the socket (12). The inner wall of the socket (12) is provided with a track groove (5).

6. A rotary telescopic utility knife according to claim 5, characterized in that: A limiting plate (13) is fixed inside the insertion hole (12). The limiting plate (13) is located below the blade holder (3). When the blade (4) retracts into the housing (1), the lower end of the blade holder (3) abuts against the upper end of the limiting plate (13).

7. A rotary telescopic utility knife according to claim 1, characterized in that: The bottom of the interior of the housing (1) is provided with an annular groove (14), and the rotating base (2) is provided with an annular protrusion (15), which is located in the annular groove (14).

8. A rotary telescopic utility knife according to claim 1, characterized in that: The rotating base (2) has clamping surfaces (11) symmetrically arranged on its front and rear sides.

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