CN220463968U

CN220463968U - Paper knife

Info

Publication number: CN220463968U
Application number: CN202322359765.1U
Authority: CN
Inventors: 李伟赞; 姜观达; 关彬; 林雅; 陈静
Original assignee: Yangjiang Grand Harvest Industrial Co ltd
Current assignee: Yangjiang Grand Harvest Industrial Co ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-02-09
Anticipated expiration: 2033-08-31

Abstract

The utility model discloses a paper knife, which comprises a knife handle and a knife head, wherein a storage cavity is formed in the knife handle, a knife blade is arranged in the knife head, one end of the knife blade extends to the outer side of the knife head, a knife handle hinging part is arranged on the other side of the knife head, an unfolding positioning groove is arranged on one side of the hinging part, a retracting positioning groove is arranged on the other side of the hinging part, the hinging part is arranged in the storage cavity and is hinged through a pin shaft, a switch lock button is arranged in the knife handle, and one end of the knife head rotates by taking the pin shaft as a circle center to enable the switch lock button to fall into the unfolding positioning groove or fall into the retracting positioning groove. The tool bit one end is articulated with this handle of a knife, and this tool bit can be followed and expanded in this handle of a knife when needs use, and in this handle of a knife can be retrieved to this tool bit after finishing using, this tool bit carries out the switch lock through this switch lock knob, and the use of cutter is safer, simple structure, convenient operation.

Description

Paper knife

Technical Field

The utility model relates to the field of cutters, in particular to a paper cutter.

Background

The paper knife is a tool used in offices and schools, and is usually used for shearing paper and articles, paper shearing is easier and more efficient due to the design of the paper knife, and the knife head of the paper knife and the knife handle are in a foldable structure for safer use, when the paper knife is used, the knife head is unfolded from the knife handle, and when the paper knife is used, the knife head is retracted into the knife handle.

Chinese patent publication No. CN 201604159U discloses a paper knife, a blade holder and a bottom bone, a first handle half and a second handle half. The blade seat is provided with a first clamping groove and a second clamping groove which can be engaged with the hooking part of the bottom bone, wherein the first clamping groove corresponds to the opening locking position of the blade seat, and the second clamping groove corresponds to the closing locking position of the blade seat. In this way, one component, the bottom bone, can achieve both an open and a closed locking of the blade holder.

The bottom bone is provided with a hook part positioned at the head part of the handle, a pressing part positioned at the tail part of the handle and an elastic arm extending below the pressing part, and the two sides of the bottom bone are also provided with supporting pins which are integrally formed, so that the bottom bone can rotate around the supporting pins, the structure of the bottom bone of the switch part for controlling the tool bit to retract and expand of the existing paper knife is complex, and the bottom bone is inconvenient to produce and process and wastes time and labor cost.

Disclosure of Invention

The utility model solves the problems that the existing paper knife controls the knife head to be unfolded or the switch component in the knife handle to be folded, has a complex structure and is inconvenient to operate.

According to the technical scheme, the paper knife comprises a knife handle and a knife head, wherein a containing cavity is formed in the knife handle, a knife blade is arranged in the knife head, one end of the knife blade extends to the outer side of the knife head, a knife handle hinging part is arranged on the other side of the knife head, a unfolding positioning groove is formed on one side of the hinging part, a retracting positioning groove is formed on the other side of the hinging part, the hinging part is arranged in the containing cavity and is hinged through a pin shaft, a switch lock button is arranged in the knife handle, and one end of the knife head rotates around the pin shaft as a circle center to enable the switch lock button to fall into the unfolding positioning groove or fall into the retracting positioning groove.

Further, the edge between the unfolding positioning groove and the retraction positioning groove is in an arc structure.

Further, the top wall of the accommodating cavity is provided with an elastic sheet, and the elastic sheet extends towards the cutter head.

Further, a back clip is arranged on one side of the knife handle.

Further, a tail pad is arranged on one side of the knife handle.

Further, one end of the switch lock knob extends to the outer side of the knife handle, and the switch lock knob is provided with a locking section and an unlocking section, wherein the diameter of the locking section is larger than that of the unlocking section.

Compared with the prior art, the utility model has the beneficial effects that: the tool bit one end is articulated with this handle of a knife, and this tool bit can be followed and expanded in this handle of a knife when needs use, and in this handle of a knife can be retrieved to this tool bit after finishing using, this tool bit carries out the switch lock through this switch lock knob, and the use of cutter is safer, simple structure, convenient operation.

Drawings

FIG. 1 is a schematic view of the tool bit and tool shank of the present utility model;

FIG. 2 is an exploded view of the present utility model;

FIG. 3 is a schematic view of a tool bit according to the present utility model;

FIG. 4 is a cross-sectional view of the present utility model;

FIG. 5 is a schematic view of the tool tip retracting handle of the present utility model;

FIG. 6 is a schematic view showing a connection structure between a switch lock knob and a tool bit according to the present utility model,

FIG. 7 is a schematic view showing the switch lock button locked closed state when the tool bit is closed according to the present utility model;

fig. 8 is a schematic view showing a state in which the switch lock knob is locked to be unfolded when the cutter head is unfolded according to the present utility model.

Reference numerals: a shank 10; a cutter head 20; a receiving cavity 11; a blade 21; a hinge 30; unfolding the positioning groove 31; retracting the positioning groove 32; a pin 101; a switch lock knob 12; a circular arc structure 33; a spring piece 13; a back clip 14; a tail pad 15; a locking section 122; unlocking the segment 121.

Detailed Description

As shown in fig. 1 to 8, a paper knife comprises a knife handle 10 and a knife head 20, wherein a containing cavity 11 is formed in the knife handle 10, a knife blade 21 is arranged in the knife head 20, one end of the knife blade 21 extends to the outer side of the knife head 20, a knife handle hinging part 30 is arranged at the other side of the knife head 20, a knife head unfolding positioning groove 31 is arranged at one side of the hinging part 30, a knife head retracting positioning groove 32 is arranged at the other side of the hinging part 30, the hinging part 30 is arranged in the containing cavity 11 and hinged through a pin shaft 101, a switch lock button 12 is arranged in the knife handle 10, when the knife head 20 needs to be used, one end of the knife head 20 rotates around the pin shaft 101 until the switch lock button 12 falls into the unfolding positioning groove 31, so that the knife head 20 can be unfolded from the knife handle 10, and when the knife head 20 is used, one end of the knife head 20 rotates around the pin shaft 101 until the switch lock button 12 falls into the retracting positioning groove 32, so that the knife head 20 is prevented from being scratched by the knife blade 21 carelessly.

The edge between the unfolding positioning groove 31 and the retracting positioning groove 32 is provided with an arc structure 33, and the arc structure 33 moves along the surface of the switch lock knob 12 when the cutter head 20 is unfolded or retracted to rotate.

The top wall of the accommodating cavity 11 is provided with a spring piece 13, the spring piece 13 extends towards the cutter head 20, when the cutter head 20 is retracted into the cutter handle 10, the edge of the cutter head 20 presses the spring piece 13 in the accommodating cavity 11 to shrink, and when the cutter head 20 needs to be unfolded from the cutter handle 10, the shrunken spring piece 13 pushes the cutter head 20 to be unfolded from the cutter handle 10 through self elasticity, so that the cutter head 20 is assisted to be unfolded from the cutter handle 10.

The back clamp 14 is arranged on one side of the knife handle 10, the back clamp 14 is connected with the knife handle 10 through a screw, and when the knife is used, the knife can be conveniently carried through the back clamp 14.

The handle of a knife 10 one side is equipped with tail pad 15, and this tail pad 15 passes through the screw and is connected with this handle of a knife 10, is equipped with the hole of hanging in this tail pad 15, and when using, this tail pad 15 is connected convenient to carry with the key ring through hanging the hole.

One end of the switch lock knob 12 extends to the outer side of the tool handle 10, the switch lock knob 12 is provided with a locking section 122 and an unlocking section 121, the diameter of the locking section 122 is larger than that of the unlocking section 121, when the tool bit 20 needs to be controlled to rotate in the tool handle 10, the switch lock knob 12 is pressed to enable the unlocking section 121 to be arranged in a positioning groove of the tool bit 20, at the moment, the tool bit 20 can rotate, when the tool bit 20 reaches a designated position, the locking section 122 of the switch lock knob 12 is arranged in the positioning groove, and at the moment, the switch lock knob 12 and the tool bit 20 cannot be locked.

In summary, according to the paper knife of the present utility model, one end of the knife head 20 is hinged with the knife handle 10, when the paper knife is needed to be used, the knife head 20 can be unfolded from the knife handle 10, and after the paper knife is used, the knife head 20 can be retracted into the knife handle 10, and the knife head 20 is switched and locked by the switch lock knob 12, so that the paper knife is safer to use, simple in structure and convenient to operate.

Claims

1. The utility model provides a paper sword, includes handle of a knife (10) and tool bit (20), is equipped with in this handle of a knife (10) and accomodates cavity (11), is equipped with blade (21) in this tool bit (20), and this blade (21) one end extends to the outside of this tool bit (20), and this tool bit (20) opposite side is equipped with handle of a knife articulated portion (30), its characterized in that: one side of the hinging part (30) is provided with a unfolding positioning groove (31), the other side is provided with a retracting positioning groove (32), the hinging part (30) is arranged in the containing cavity (11) and hinged by a pin shaft (101), a switch lock button (12) is arranged in the knife handle (10), one end of the knife head (20) rotates the switch lock button (12) to fall into the unfolding positioning groove (31) or fall into the retraction positioning groove (32) by taking the pin shaft (101) as a circle center.

2. The paper knife according to claim 1, wherein: the edge between the unfolding positioning groove (31) and the retraction positioning groove (32) is provided with an arc structure (33).

3. The paper knife according to claim 2, wherein: the top wall of the accommodating cavity (11) is provided with a spring piece (13), and the spring piece (13) extends towards the cutter head (20).

4. A paper knife according to claim 3, characterized in that: a back clip (14) is arranged on one side of the knife handle (10).

5. The paper knife according to claim 4, wherein: a tail pad (15) is arranged on one side of the knife handle (10).

6. The paper knife according to claim 1, wherein: one end of the switch lock knob (12) extends to the outer side of the knife handle (10), the switch lock knob (12) is provided with a locking section (122) and an unlocking section (121), and the diameter of the locking section (122) is larger than that of the unlocking section (121).