Folding knife with knife back provided with elastic cantilever fixing structure

Abstract

The utility model discloses a folding knife with a knife back provided with an elastic cantilever fixing structure, which comprises a knife handle, the front end of the knife handle is hinged with a blade through a hinge screw, the knife back of the blade is provided with an elastic cantilever, and the end part of the elastic cantilever is provided with a lock catch. The left side and the right side of the front end of the knife handle are respectively provided with a lock groove corresponding to the lock catch, the front end of the knife handle is provided with an arc surface for the lock catch to slide, the lock catch is cylindrical, the elastic cantilever and the blade are integrally formed, and a hollow groove is formed between the elastic cantilever and the blade. The utility model has the advantages that the structure is simple, the lock catch at the back of the blade slides along the arc surface at the end part of the knife handle under the elastic action of the elastic cantilever, the blade can be fixed without loosening when sliding to the lock groove, the blade has elastic force to enter the lock position for fixation when being opened and folded, the blade is not easy to throw away, the blade is not easy to shift when being vibrated during use, the carrying is convenient, and the use effect is good; the production cost is reduced and batch production is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of folding knives, in particular to a folding knife with an elastic cantilever fixing structure arranged on the blade back. Background Art

[0002] Folding knives are a type of knife that are widely used in people's lives due to their deformability and convenient storage and portability. When not in use, the folding knife can be folded and stored, with the blade hidden in the handle, making it safe to access and preventing cuts. Folding knives are generally equipped with an opening and closing locking structure to lock the folding knife during daily use. This prevents the blade from naturally closing due to lack of locking during long-term use, which can easily cause injury to the user. It also prevents the blade from naturally opening due to lack of locking when closed, which can easily cause injury to the user in situations where "blindly touching" items in pockets and backpacks is likely to occur. However, traditional folding knives generally have an elastic steel plate on the inside of the handle to fix the blade in place when opened and closed. The blade is easily displaced by vibration during use, resulting in poor performance, increased production costs, and unfavorable for mass production. Therefore, in order to avoid the shortcomings of the existing technology, it is necessary to make improvements to the existing technology. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a folding knife with a simple structure and stable opening and closing positioning, and a blade back provided with an elastic cantilever fixing structure.

[0004] The utility model is realized through the following technical solutions:

[0005] A folding knife with an elastic cantilever fixing structure on the blade back comprises a handle, a blade is hinged to the front end of the handle via a hinge screw, an elastic cantilever is provided at the back of the blade, a lock buckle is installed at the end of the elastic cantilever, lock grooves corresponding to the lock buckle are respectively provided on the left and right sides of the front end of the handle, and an arc surface is provided on the front end of the handle for the lock buckle to slide.

[0006] Furthermore, the lock buckle is cylindrical and the lock slot is arc-shaped.

[0007] Furthermore, the arc surface is a semicircular arc surface.

[0008] Furthermore, the elastic cantilever and the blade are integrally formed.

[0009] Furthermore, a hollow groove is provided between the elastic cantilever and the blade.

[0010] Furthermore, the hinge screw is connected to a hinge nut.

[0011] Furthermore, the knife handle includes an upper knife handle piece and a lower knife handle piece.

[0012] Furthermore, the rear end of the upper handle piece and the rear end of the lower handle piece are fixed by connecting screws and connecting nuts.

[0013] Furthermore, a blade accommodating groove for accommodating the blade is formed between the upper handle piece and the lower handle piece, and a protective sleeve is provided on the outer side of the connecting nut.

[0014] Furthermore, the blade is a stainless steel blade.

[0015] Compared with the prior art, the utility model provides an elastic cantilever at the back of the blade, and a lock buckle is installed at the end of the elastic cantilever. Lock grooves corresponding to the lock buckles are respectively provided on the left and right sides of the front end of the handle. The front end of the handle is provided with an arc surface for the lock buckle to slide, so that when the blade is opened and closed, the lock buckle on the back of the blade slides along the arc surface of the end of the handle under the elastic force of the elastic cantilever, and slides to the lock groove to fix the blade without loosening. The blade is opened, closed and folded with elastic force to lock into the lock position, and it is not easy to throw off the blade. The blade is not easily displaced by vibration when in use, has good use effect, reduces production costs, and is conducive to mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic diagram of the structure of a folding knife in use with a blade back provided with an elastic cantilever fixing structure according to the present invention;

[0018] Figure 2 This is an exploded view of the structure of a folding knife with an elastic cantilever fixing structure on the blade back of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a folding knife with an elastic cantilever fixing structure on the blade back of the utility model when it is folded.

[0020] In the figure: 1-handle; 2-hinge screw; 3-blade; 4-elastic cantilever; 5-locking buckle; 6-locking slot; 7-arc surface; 8-hollow slot; 9-hinge nut; 10-upper handle piece; 11-lower handle piece; 12-connecting screw; 13-connecting nut; 14-blade receiving slot; 15-protective cover. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figures 1 to 3 The utility model shown is a folding knife with a blade back provided with an elastic cantilever fixing structure, comprising a handle 1, a blade 3 hinged to the front end of the handle 1 by a hinge screw 2, an elastic cantilever 4 is provided at the back of the blade 3, a lock buckle 5 is installed at the end of the elastic cantilever 4, locking grooves 6 corresponding to the lock buckle 5 are respectively provided on the left and right sides of the front end of the handle 1, and an arc surface 7 for the lock buckle 5 to slide is provided at the front end of the handle 1. An elastic cantilever 4 is provided at the back of the blade 3, and a lock buckle 5 is installed at the end of the elastic cantilever 4. Lock grooves 6 corresponding to the lock buckle 5 are respectively provided on the left and right sides of the front end of the handle 1. The front end of the handle 1 is provided with an arc surface 7 for the lock buckle 5 to slide. When the blade 3 is opened and closed, the lock buckle 5 on the back of the blade 3 slides along the arc surface 7 at the end of the handle 1 under the elastic force of the elastic cantilever 4, and slides to the lock groove 6 to fix the blade 3 without loosening. The blade 3 is opened, closed and folded with elastic force to be locked and fixed, and it is not easy to throw off the blade 3. The blade 3 is not easily displaced by vibration when in use, has a good use effect, reduces production costs, and is conducive to mass production.

[0023] As a specific implementation, the lock buckle 5 is cylindrical and the lock groove 6 is arc-shaped, so that the lock buckle 5 has a simple structure and is easy to slide into place and fix.

[0024] The arc surface 7 is a semicircular arc surface, which facilitates the sliding connection of the lock buckle 5 and the rotation angle limitation of the blade 3.

[0025] As a specific implementation, the elastic cantilever 4 is integrally formed with the blade 1, and the blade back of the blade 1 is hollowed out to form the elastic cantilever 4, so that the structure of the elastic cantilever 4 is more stable and the elastic reset is more stable.

[0026] A hollow groove 8 is provided between the elastic cantilever 4 and the blade 1 to prevent the elastic cantilever 4 from contacting the blade 1 and affecting elastic reset.

[0027] The hinge screw 2 is connected with a hinge nut 9, which is convenient for the installation of the hinge screw 2 and the disassembly and replacement of the blade 3. The end of the blade 3 is sleeved on the outside of the hinge nut 9, so that the rotation of the blade 3 is more stable.

[0028] In a specific implementation, the knife handle 1 includes an upper knife handle piece 10 and a lower knife handle piece 11, which facilitates the manufacture of the knife handle 1 and the installation of the blade 3, thereby reducing production costs.

[0029] The rear end of the upper handle piece 10 and the rear end of the lower handle piece 11 are fixed by connecting screws 12 and connecting nuts 13, which facilitates the assembly of the upper handle piece 10 and the lower handle piece 11.

[0030] A blade receiving groove 14 for receiving the blade 3 is formed between the upper handle piece 10 and the lower handle piece 11, which facilitates the closing and storage of the blade 3. A protective sleeve 15 is provided on the outer side of the connecting nut 13 to prevent the blade 3 from contacting the connecting nut 13 and damaging the blade 3.

[0031] As a specific embodiment, the blade 3 is a stainless steel blade, which is strong and durable. The elastic cantilever 4 has a strong elastic reset ability. The blade 3 is opened, closed and folded with a strong elastic force to be locked into a fixed position, and the blade 3 will not be thrown off.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A folding knife with a blade back provided with an elastic cantilever fixing structure, characterized in that: The utility model comprises a handle, wherein a blade is hingedly connected to the front end of the handle by a hinge screw, an elastic cantilever is provided at the back of the blade, a lock buckle is installed at the end of the elastic cantilever, lock grooves corresponding to the lock buckle are respectively provided on the left and right sides of the front end of the handle, and an arc surface for the lock buckle to slide is provided at the front end of the handle.

2. The folding knife with a blade back provided with an elastic cantilever fixing structure according to claim 1, characterized in that: The lock buckle is cylindrical, and the lock slot is arc-shaped.

3. The folding knife with a blade back provided with an elastic cantilever fixing structure according to claim 1, characterized in that: The arc surface is a semicircular arc surface.

4. The folding knife with a blade back provided with an elastic cantilever fixing structure according to claim 1, characterized in that: The elastic cantilever and the blade are integrally formed.

5. The folding knife with a blade back provided with an elastic cantilever fixing structure according to claim 1, characterized in that: A hollow groove is provided between the elastic cantilever and the blade.

6. The folding knife with a blade back provided with an elastic cantilever fixing structure according to claim 1, characterized in that: The hinge screw is connected with a hinge nut.

7. The folding knife with a blade back provided with an elastic cantilever fixing structure according to claim 1, characterized in that: The knife handle comprises an upper knife handle piece and a lower knife handle piece.

8. The folding knife with a blade back provided with an elastic cantilever fixing structure according to claim 7, characterized in that: The rear end of the upper handle piece and the rear end of the lower handle piece are fixed by connecting screws and connecting nuts.

9. The folding knife with a blade back provided with an elastic cantilever fixing structure according to claim 8, characterized in that: A blade accommodating groove for accommodating the blade is formed between the upper handle piece and the lower handle piece, and a protective sleeve is sleeved on the outer side of the connecting nut.

10. The folding knife with a blade back provided with an elastic cantilever fixing structure according to claim 1, characterized in that: The blade is a stainless steel blade.

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