CN218837839U

CN218837839U - Carpet knife and blade fixing structure thereof

Info

Publication number: CN218837839U
Application number: CN202223320710.1U
Authority: CN
Inventors: 潘明祥; 邬汝夫; 姚琦
Original assignee: Ningbo Xingwei Tool Technology Co ltd
Current assignee: Ningbo Xingwei Tool Technology Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-04-11
Anticipated expiration: 2032-12-08

Abstract

The application discloses carpet sword and blade fixed knot constructs thereof belongs to cutter technical field. The blade fixing structure of the carpet knife comprises an elastic piece, the elastic piece comprises a first elastic arm and a second elastic arm, the first elastic arm is suitable for penetrating through a positioning hole in the middle of the blade, the first elastic arm comprises a first plate body suitable for deforming and moving towards a first direction, the second elastic arm comprises a second plate body suitable for deforming and moving towards a second direction, the first plate body is matched with the second plate body to form an abutting portion suitable for being clamped with the positioning hole, and the first elastic arm and the second elastic arm are further provided with a guide portion suitable for guiding the blade to face towards or be far away from the sliding of the abutting portion. Compared with the prior art, the utility model has the advantages of blade position can be fixed to the blade takes and can avoid the blade point, more convenient safety.

Description

Carpet knife and blade fixing structure thereof

Technical Field

The application relates to the technical field of cutters, in particular to a carpet knife and a blade fixing structure thereof.

Background

A carpet knife is a craft knife, a common hand tool, which can be used to cut wood, paper, leather, plastic, wire, cardboard, especially carpet or cloth. Carpet knives typically have a spare blade mounting slot in the housing of the handle for receiving a spare blade.

However, the existing carpet knife is not usually provided with a locking device for fixing the position of the spare blade, or although part of the carpet knife is provided with the locking device, the upper side and the lower side of the blade are both provided with the blade edges, and the spare blade needs to be taken from the direction of the blade edge when being taken out, so that great potential safety hazard exists.

For this reason, a new blade fixing structure of the carpet knife needs to be designed.

SUMMERY OF THE UTILITY MODEL

An aim at of this application provides a blade fixed knot of carpet sword constructs, realizes fixed reserve blade position to the blade is taken more convenient safety.

It is another object of the present application to provide a carpet knife using the blade fixing structure of the carpet knife described above.

In order to achieve one of the purposes of the application, the technical scheme adopted by the application is as follows: the utility model provides a blade fixed knot of carpet sword constructs, its includes an elastic component, the elastic component is including being suitable for first elastic arm and the second elastic arm that passes blade middle part locating hole, first elastic arm is including being suitable for the first plate body to first direction deformation motion, the second elastic arm is including being suitable for the second plate body to second direction deformation motion, first plate body with the cooperation of second plate body forms the butt portion that is suitable for with the locating hole joint, first elastic arm with second elastic arm still is equipped with and is suitable for the guide blade orientation or keeps away from the gliding guide part of butt portion.

Preferably, still include the casing, the casing is equipped with one and holds the chamber, butt portion sets up hold the intracavity, the blade install in during butt portion, hold the chamber and leave the surplus space at the blade both ends to in the handheld portion at touching blade both ends, the casing still includes the barricade that the blade edge of a knife or a sword of relative blade both sides set up.

Preferably, the elastic piece is a spring piece, and the first elastic arm and the second elastic arm are connected through a U-shaped connecting portion.

Preferably, the end of the first elastic arm far away from the U-shaped connecting portion is bent towards the second elastic arm to form a first bent portion, the end of the second elastic arm far away from the U-shaped connecting portion is bent towards the first elastic arm to form a second bent portion, and the end of the first bent portion is suitable for abutting against the second elastic arm.

Preferably, the U-shaped connecting portion, the first bending portion, and the second bending portion are respectively provided with a notch.

Preferably, the first elastic arm includes a third bending portion connected to the first plate, the second elastic arm includes a fourth bending portion connected to the second plate, and a distance between the third bending portion and the fourth bending portion gradually increases and then gradually decreases along a direction away from the abutting portion, and the third bending portion and the fourth bending portion constitute the guide portion.

Preferably, the first plate body and the second plate body are arranged substantially along the length direction of the blade, and the first plate body and the second plate body extend along the length direction of the blade by a certain width and extend along the thickness direction of the blade by a certain height so as to accommodate a plurality of blades.

Preferably, the housing is provided with two positioning columns suitable for positioning the blade, and the two positioning columns are respectively suitable for penetrating through two ends of the positioning hole.

Preferably, the shell is further provided with a relatively raised limiting part, and the limiting part is suitable for abutting against the bottom surface of the blade.

The present application can also provide a carpet knife that employs the blade securing structure of the carpet knife described above.

Compared with the prior art, the beneficial effect of this application lies in:

(1) The blade both ends of carpet sword are equipped with handheld portion, and the blade middle part is passed through locating hole and butt portion joint, and when the blade of taking, the finger presses handheld portion, makes the locating hole deviate from butt portion can, can avoid the blade point to take the blade, and the operation is more convenient, safer, when depositing reserve blade to the finger presses handheld portion, pushes down the locating hole towards butt portion, can accomplish the joint, makes the position of blade obtain fixedly.

(2) When the shell of the utility knife is opened and the blade is taken, the blade is fixed under the acting force of the two elastic arms and can not fall off, thereby avoiding the occurrence of accidents of hurting people.

(3) The guide portion is provided to guide the blade to slide toward or away from the abutting portion, so that the process of mounting or taking the blade becomes smoother.

Drawings

FIG. 1 is a schematic view of a carpet knife;

FIG. 2 is a schematic structural view of a blade fixing structure of the carpet knife;

FIG. 3 is a schematic view of the blade securing structure of the carpet knife without the blade attached;

FIG. 4 is a perspective view of the resilient member and blade after the housing is concealed;

FIG. 5 is a side view of the resilient member and blade after the housing has been concealed;

FIG. 6 is a schematic structural view of the elastic member;

FIG. 7 isbase:Sub>A schematic cross-sectional view taken along the line A-A in FIG. 2;

in the figure: 10. a blade; 11. a hand-held portion; 1a, positioning holes; 20. an elastic member; 21. a first resilient arm; 211. a first plate body; 212. a first bent portion; 213. a third bent portion; 22. a second resilient arm; 221. a second plate body; 222. a second bent portion; 223. a fourth bent portion; 23. a U-shaped connecting part; 20a, a notch; 2a, a contact portion; 2b, a guide part; 30. a housing; 3a, a cavity; 31. a positioning column; 32. a limiting part; 33. and (7) retaining walls.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments described below or between the technical features may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The present application provides a blade fixing structure of a carpet knife, as shown in fig. 2 to 7, which includes an elastic member 20, the elastic member 20 includes a first elastic arm 21 and a second elastic arm 22 adapted to pass through a positioning hole 1a in the middle of a blade 10, the first elastic arm 21 includes a first plate 211 adapted to move in a first direction in a deformation manner, the second elastic arm 22 includes a second plate 221 adapted to move in a deformation manner in a second direction, the first plate 211 cooperates with the second plate 221 to form an abutting portion 2a adapted to be engaged with the positioning hole 1a, and the first elastic arm 21 and the second elastic arm 22 are further provided with a guiding portion 2b adapted to guide the blade 10 to slide toward or away from the abutting portion 2 a.

Wherein, the both ends of blade 10 of carpet sword are equipped with handheld portion 11, and the blade 10 middle part is equipped with a locating hole 1a, and both sides all are equipped with the blade point about blade 10.

Compared with the prior art, the blade 10 of the carpet knife is clamped with the abutting part 2a through the positioning hole 1a, when the blade 10 is taken, the hand-held part 11 is pressed by fingers, the positioning hole 1a is separated from the abutting part 2a, the blade 10 can be taken without the blade edge, the operation is more convenient and safer, when the spare blade 10 is stored, the hand-held part 11 is pressed by the fingers, the positioning hole 1a is pressed downwards towards the abutting part 2a, the clamping can be completed, and the position of the blade 10 is fixed; when the shell 30 of the art knife is opened and the blade 10 is taken out, the blade 10 is fixed under the action of the two elastic arms and cannot fall off, so that the occurrence of accidents of hurting people is avoided; further, the guide portion 2b is provided to guide the sliding of the blade 10 toward or away from the abutting portion 2a, so that the process of attaching or taking the blade 10 becomes smoother.

As shown in fig. 2, the portable cutting tool further comprises a housing 30, the housing 30 is provided with a containing cavity 3a, the abutting portion 2a is arranged in the containing cavity 3a, when the blade 10 is installed on the abutting portion 2a, the containing cavity 3a leaves allowance spaces at two ends of the blade 10, so that the holding portions 11 at two ends of the blade 10 can be touched, and as shown by two straight line arrows in fig. 2, a finger can be inserted from the allowance spaces to conveniently take the blade 10.

As shown in fig. 2 and 7, the housing 30 further includes a retaining wall 33 disposed opposite to the blade points on the two sides of the blade 10, and the retaining wall 33 shields the blade points on the two sides to prevent the blade points from scratching hands when the blade 10 is taken.

Preferably, as shown in fig. 6, the elastic member 20 is an elastic sheet, the first elastic arm 21 and the second elastic arm 22 are connected by a U-shaped connecting portion 23, and the first elastic arm 21, the second elastic arm 22 and the U-shaped connecting portion 23 are formed by bending the elastic sheet, which is simple in structure, and in a natural state, the distance between the first elastic arm 21 and the second elastic arm 22 is relatively large, as shown in fig. 4 and 5, when the blade 10 is clamped in the abutting portion 2a, the first plate 211 and the second plate 221 are pressed by the housing 30 at the edge of the positioning hole 1a to drive the distance between the first elastic arm 21 and the second elastic arm 22 to be relatively small, and under the supporting effect of the U-shaped connecting portion 23 on the first elastic arm 21 and the second elastic arm 22, the first elastic arm 21 and the second elastic arm 22 have a movement tendency of being away from each other to restore to a self-state. In this case, the first direction is a direction away from the second elastic arm 22, and the second direction is a direction away from the first elastic arm 21.

As an improvement, the end of the first elastic arm 21 away from the U-shaped connecting portion 23 is bent toward the second elastic arm 22 to form a first bent portion 212, the end of the second elastic arm 22 away from the U-shaped connecting portion 23 is bent toward the first elastic arm 21 to form a second bent portion 222, which can prevent the end of the first elastic arm 21 or the second elastic arm 22 from scratching the housing 30 or the hand, the end of the first bent portion 212 is suitable for abutting against the second elastic arm 22, so as to limit the degree of compression deformation between the first elastic arm 21 and the second elastic arm 22, prevent the elastic member 20 from being damaged due to over-compression therebetween, and achieve certain supporting and protecting effects.

Preferably, as shown in fig. 6,U, the connecting portion 23, the first bent portion 212 and the second bent portion 222 are respectively provided with notches 20a, which plays a role in reducing weight and reducing the amount of material required for producing the elastic member 20, and is beneficial to reducing the production cost during mass production of the tool.

Preferably, the first elastic arm 21 includes a third bending portion 213 connected to the first board 211, the second elastic arm 22 includes a fourth bending portion 223 connected to the second board 221, and the distance between the third bending portion 213 and the fourth bending portion 223 gradually increases along the direction away from the abutting portion 2a, so that when the blade 10 is taken, the blade 10 is guided to slide in the direction away from the abutting portion 2a, and then gradually decreases to be smaller than the corresponding aperture of the positioning hole 1a, so that when the blade 10 is mounted, the blade 10 is guided to be inserted into the elastic member 20 and gradually slide in the direction close to the abutting portion 2a, and the third bending portion 213 and the fourth bending portion 223 constitute a guiding portion 2b.

More specifically, as shown in fig. 4, the first plate 211 and the second plate 221 are substantially disposed along the length direction of the blade 10, the first plate 211 and the second plate 221 extend along the length direction of the blade 10 by a certain width to increase the contact area of the abutting portion 2a with the blade 10, so that the blade 10 is stably fixed to the abutting portion 2a, and the abutting portion 2a extends by a certain height along the thickness direction of the blade 10 to accommodate a plurality of blades 10.

Furthermore, the housing 30 is provided with two positioning posts 31 adapted to position the blade 10, and the two positioning posts 31 are adapted to penetrate through two ends of the positioning hole 1 a. The positioning post 31 can further fix the blade 10, and prevent the blade 10 from being displaced along the length direction.

Preferably, the housing 30 is further provided with a relatively convex limiting portion 32, as shown in fig. 5, the limiting portion 32 is adapted to abut against the bottom surface of the blade 10, thereby lifting the blade 10 and facilitating the taking of the blade 10.

More specifically, two sides of the positioning column 31 are provided with reinforcing ribs, and the reinforcing ribs are used as the limiting parts 32.

The present application can also provide a carpet knife, as shown in fig. 1, which employs the above-mentioned blade fixing structure of the carpet knife, and the spare blade 10 can be taken more conveniently and safely.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. The utility model provides a blade fixed knot of carpet sword constructs which characterized in that: including an elastic component, the elastic component is including being suitable for first elastic arm and the second elastic arm that passes blade middle part locating hole, first elastic arm is including being suitable for the first plate body to first direction deformation motion, the second elastic arm is including being suitable for the second plate body to second direction deformation motion, first plate body with the cooperation of second plate body forms the butt portion that is suitable for with the locating hole joint, first elastic arm with the second elastic arm still is equipped with and is suitable for the guide blade orientation or keeps away from the gliding guide part of butt portion.

2. The blade holding structure for a carpet knife according to claim 1 wherein: still include the casing, the casing is equipped with one and holds the chamber, butt portion sets up hold the intracavity, the blade install in during butt portion, hold the chamber and leave the surplus space at the blade both ends to in the handheld portion at touching blade both ends, the casing still includes the barricade that the blade edge of a knife or a sword of relative blade both sides set up.

3. The blade fixing structure of a carpet knife according to claim 1 or 2, characterized in that: the elastic piece is a spring piece, and the first elastic arm and the second elastic arm are connected through a U-shaped connecting portion.

4. The blade holding structure of a carpet knife according to claim 3, wherein: the end part of the first elastic arm far away from the U-shaped connecting part is bent towards the second elastic arm to form a first bent part, the end part of the second elastic arm far away from the U-shaped connecting part is bent towards the first elastic arm to form a second bent part, and the end part of the first bent part is suitable for abutting against the second elastic arm.

5. The blade holding structure of a carpet knife according to claim 4, wherein: the U-shaped connecting portion, the first bending portion and the second bending portion are respectively provided with a notch.

6. The blade holding structure of a carpet knife according to claim 1 or 2 wherein: the first elastic arm comprises a third bending part connected with the first plate body, the second elastic arm comprises a fourth bending part connected with the second plate body, the distance between the third bending part and the fourth bending part is gradually increased and then gradually decreased along the direction deviating from the abutting part, and the third bending part and the fourth bending part form the guide part.

7. The blade fixing structure of a carpet knife according to claim 1 or 2, characterized in that: the first plate body and the second plate body are basically arranged along the length direction of the blade, and extend for a certain width along the length direction of the blade and extend for a certain height along the thickness direction of the blade so as to accommodate a plurality of blades.

8. The blade holding structure of a carpet knife according to claim 2, wherein: the shell is provided with two positioning columns suitable for positioning the blade, and the two positioning columns are respectively suitable for penetrating through two ends of the positioning hole.

9. The blade holding structure of a carpet knife according to claim 2, wherein: the shell is further provided with a limiting part protruding relatively, and the limiting part is suitable for abutting against the bottom surface of the blade.

10. Carpet sword, its characterized in that: use of a blade holding structure for a carpet knife according to any of claims 1 to 9.