Novel locking mechanism of butterfly knife

Abstract

The novel locking mechanism comprises a blade, a left handle and a right handle are hinged to the left side and the right side of the rear portion of the blade respectively, a locking block capable of being hidden is installed on the rear side of the left handle, and a locking block spring connected with the locking block capable of being hidden is installed on the inner side of the left handle. The lock block spring tensions the concealable lock block, one end of the concealable lock block is provided with a sliding protrusion, the sliding protrusion is provided with a rotating protrusion, the left handle is provided with a sliding groove corresponding to the sliding protrusion, and the other end of the concealable lock block is provided with a clamping column. A clamping groove corresponding to the clamping column is formed in the rear side of the right handle, and a positioning groove for positioning the clamping column is formed in the rear end of the right handle. The hilt lock is simple in structure, the hilt lock block can be hidden in the hilt all the time, the hilt lock is attractive in appearance, locking operation can be achieved without two hands, operation is smooth, use is convenient, a user cannot be hurt by a locking mechanism, and use experience is good.

Description

Technical Field

[0001] The present invention relates to the technical field of knife tools, in particular to a novel locking mechanism for a butterfly knife. Background Art

[0002] A butterfly knife is a foldable small knife, also known as a swing knife. Its handle can be twisted to form a scabbard that holds the blade. When opened, the handle clamps against the blade stop, and when closed, the blade is hidden in a recess, making it extremely sturdy and easy to carry. A butterfly knife is an atypical folding knife that completely eliminates the need for a scabbard. It can be conveniently and safely folded to half its length. The handle serves a dual purpose, serving as both a scabbard and a sturdy handle when rotated. Butterfly knives typically feature a locking mechanism to lock the knife when folded, preventing the blade from opening naturally after being folded. This prevents injuries to the user in pockets, backpacks, and other situations where it's easy to "blindly" reach for items. However, the locking mechanism of existing butterfly knives is typically located at the end of the handle, leaving it exposed, which affects the appearance. It often requires both hands to lock the knife, making it inconvenient and prone to injury, resulting in a poor user experience. Therefore, to address the shortcomings of the existing technology, improvements are necessary. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art and to provide a new locking mechanism for a concealed butterfly knife that is easy to use.

[0004] The present invention is achieved through the following technical solutions:

[0005] A new locking mechanism for a butterfly knife comprises a blade, wherein a left handle and a right handle are hingedly connected to the left and right sides of the rear portion of the blade respectively, a concealable locking block is installed on the rear side of the left handle, a locking block spring connected to the concealable locking block is installed on the inner side of the left handle, the locking block spring tightens the concealable locking block, one end of the concealable locking block is provided with a sliding protrusion, the sliding protrusion is provided with a rotating protrusion, the left handle is provided with a sliding groove corresponding to the sliding protrusion, the other end of the concealable locking block is provided with a clamping column, the rear side of the right handle is provided with a clamping groove corresponding to the clamping column, and the rear end of the right handle is provided with a positioning groove for positioning the clamping column.

[0006] Furthermore, a rear left upper cover is installed on both upper and lower sides of the rear portion of the left handle, and a rear right upper cover is installed on both upper and lower sides of the rear portion of the right handle. The sliding groove and the positioning groove are provided on the rear left upper cover, and the snap-in groove is provided on the rear right upper cover.

[0007] Furthermore, a connecting column is provided between the rear right upper cover.

[0008] Furthermore, one end of the concealable locking block is provided with a mounting hole for mounting one end of the locking block spring.

[0009] Furthermore, the left handle is provided with a mounting post for mounting the other end of the locking block spring.

[0010] Furthermore, a plurality of anti-slip operation grooves are provided on the outer side of one end of the concealable locking block.

[0011] Furthermore, the sliding protrusion is arranged in an elongated strip shape, and the sliding groove is arranged in an elongated strip shape.

[0012] Furthermore, both the left handle and the right handle are provided with abutment posts, and the blade is provided with abutment grooves corresponding to the abutment posts.

[0013] Furthermore, both the left handle and the right handle are provided with opening and closing operation slots.

[0014] Furthermore, front upper covers are installed on the upper and lower sides of the front portion of the left handle and the upper and lower sides of the front portion of the right handle.

[0015] Compared with the prior art, the present invention installs a lock block spring connected to the concealed lock block on the inner side of the left handle, one end of the concealed lock block is provided with a sliding protrusion, the sliding protrusion is provided with a rotating protrusion, the left handle is provided with a sliding groove corresponding to the sliding protrusion, the other end of the concealed lock block is provided with a clamping column, the rear side of the right handle is provided with a clamping groove corresponding to the clamping column, and the rear end of the right handle is provided with a positioning groove for positioning the clamping column. When the butterfly knife is opened for use, the clamping column of the concealed lock block is clamped in the positioning groove, so that the concealed lock block is stably hidden on the inner side of the left handle. When folding the butterfly knife, the left handle and the right handle are folded first, and the blade is retracted into the left handle. The left and right handles are connected, and then the hidden locking block is pushed to move horizontally. The clamping column leaves the positioning slot, and then the hidden locking block is rotated. The clamping column is rotated to the clamping slot, and the hidden locking block is released. Under the tension of the locking block spring, the clamping column is clamped into the clamping slot. When the butterfly knife needs to be opened, only the left and right handles are pressed. Under the tension of the locking block spring, the hidden locking block automatically rotates and moves, and the clamping column is re-clamped in the positioning slot, and the butterfly knife can be opened smoothly. The hidden locking block is always hidden in the handle, with a beautiful appearance. The locking operation can be achieved without using both hands. It is easy to use, the user will not be injured by the locking mechanism, and the user experience is good. 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 It is a structural schematic diagram of the novel locking mechanism of the butterfly knife of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the novel locking mechanism of the butterfly knife of the present invention;

[0019] Figure 3 This is a schematic structural diagram of the novel locking mechanism of the butterfly knife of the present invention when it is folded;

[0020] Figure 4 This is a schematic diagram of the structure of the concealable locking block of the present invention.

[0021] In the figure: 1-blade; 2-left handle; 3-right handle; 4-hidden locking block; 5-locking block spring; 6-sliding protrusion; 7-rotating protrusion; 8-sliding slot; 9-clamping column; 10-clamping slot; 11-positioning slot; 12-rear left upper cover; 13-rear right upper cover; 14-connecting column; 15-mounting hole; 16-mounting column; 17-anti-slip operating groove; 18-rest column; 19-rest slot; 20-opening and closing operating slot; 21-front upper cover. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] like Figures 1 to 4The present invention shows a new locking mechanism for a butterfly knife, comprising a blade 1, a left handle 2 and a right handle 3 hinged on the left and right sides of the rear of the blade, a concealable locking block 4 being installed on the rear side of the left handle 2, a locking block spring 5 connected to the concealable locking block 4 being installed on the inner side of the left handle 2, the locking block spring 5 tightening the concealable locking block 4, a sliding protrusion 6 being provided at one end of the concealable locking block 4, the sliding protrusion 6 being provided with a rotating protrusion 7, the left handle 2 being provided with a sliding groove 8 corresponding to the sliding protrusion 6, the other end of the concealable locking block 4 being provided with a clamping column 9, the rear side of the right handle 3 being provided with a clamping groove 10 corresponding to the clamping column 9, and the rear end of the right handle 3 being provided with a positioning groove 11 for positioning the clamping column 9. A locking block spring 5 connected to the hidden locking block 4 is installed on the inner side of the left handle 2, one end of the hidden locking block 4 is provided with a sliding protrusion 6, the sliding protrusion 6 is provided with a rotating protrusion 7, the left handle 2 is provided with a sliding groove 8 corresponding to the sliding protrusion 6, the other end of the hidden locking block 4 is provided with a clamping column 9, the rear side of the right handle 3 is provided with a clamping groove 10 corresponding to the clamping column 9, and the rear end of the right handle 3 is provided with a positioning groove 11 for positioning the clamping column 9. When the butterfly knife is opened for use, the clamping column 9 of the hidden locking block 4 is clamped in the positioning groove 11, so that the hidden locking block 4 is stably hidden on the inner side of the left handle 2. When folding the butterfly knife, first fold the left handle 2 and the right handle 3, and the blade 1 is received in the left handle 2 and the right handle 3. The right handle 3 is then pushed to move the hidden locking block 4 horizontally, and the clamping column 9 leaves the positioning slot 11. The hidden locking block 4 is then rotated and the clamping column 9 is rotated to the clamping slot 10. The hidden locking block 4 is released and subjected to the pulling force of the locking block spring 5. The clamping column 9 is clamped to the clamping slot 10. When the butterfly knife needs to be opened, only the left handle 2 and the right handle 3 are needed. Under the pulling force of the locking block spring 5, the hidden locking block 4 automatically rotates and moves, and the clamping column 9 is re-clamped in the positioning slot 11. The butterfly knife can be opened smoothly. The hidden locking block 4 is always hidden in the handle, with a beautiful appearance and the locking operation can be achieved without using both hands. It is easy to use, the user will not be injured by the locking mechanism, and the user experience is good.

[0024] A rear left upper cover 12 is installed on the upper and lower sides of the rear of the left handle 2, and a rear right upper cover 13 is installed on the upper and lower sides of the rear of the right handle 3. The sliding groove 8 and the positioning groove 11 are provided on the rear left upper cover 13, and the clamping groove 10 is provided on the rear right upper cover 13, which makes the appearance of the butterfly knife more beautiful and facilitates the installation and operation of the hidden locking block 4.

[0025] A connecting column 14 is provided between the rear right upper cover 13 to prevent foreign objects from entering the right handle 3 and affecting the rotation of the concealable lock block 4.

[0026] One end of the concealable locking block 4 is provided with a mounting hole 15 for mounting one end of the locking block spring 5 , so as to facilitate the stable connection of the concealable locking block 4 .

[0027] The left handle 2 is provided with a mounting post 16 for mounting the other end of the locking block spring 5 , so as to facilitate the stable connection of the hidden locking block 4 .

[0028] A plurality of anti-slip operation grooves 17 are provided on the outer side of one end of the concealable locking block 4 to make the movement and rotation operation of the concealable locking block 4 more stable.

[0029] The sliding protrusion 6 is arranged in an elongated strip shape, and the sliding groove 8 is arranged in an elongated strip shape, which is beneficial to the stable movement of the concealed locking block 4.

[0030] The left handle 2 and the right handle 3 are both provided with abutment columns 18, and the blade 1 is provided with abutment grooves 19 corresponding to the abutment columns 18, which limit the folding position of the left handle 2 and the right handle 3, making the butterfly knife more stable after folding and smoother to open.

[0031] Both the left handle 2 and the right handle 3 are provided with an opening and closing operation slot 20 to facilitate stable opening and closing operations of the left handle 2 and the right handle 3.

[0032] Front covers 21 are installed on the upper and lower sides of the front of the left handle 2 and the upper and lower sides of the front of the right handle 3 to prevent foreign objects from contacting the hinges, making the appearance of the butterfly knife more beautiful.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, 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 new locking mechanism for a butterfly knife, characterized by: It includes a blade, and a left handle and a right handle are hinged on the left and right sides of the rear part of the blade respectively. A hidden locking block is installed on the rear side of the left handle, and a locking block spring connected to the hidden locking block is installed on the inner side of the left handle. The locking block spring tightens the hidden locking block, and one end of the hidden locking block is provided with a sliding protrusion, and the sliding protrusion is provided with a rotating protrusion. The left handle is provided with a sliding groove corresponding to the sliding protrusion, and the other end of the hidden locking block is provided with a clamping column, and the rear side of the right handle is provided with a clamping groove corresponding to the clamping column, and the rear end of the right handle is provided with a positioning groove for positioning the clamping column.

2. The novel locking mechanism for a butterfly knife according to claim 1, characterized in that: The upper and lower sides of the rear part of the left handle are both installed with a rear left upper cover, and the upper and lower sides of the rear part of the right handle are both installed with a rear right upper cover. The sliding groove and the positioning groove are arranged on the rear left upper cover, and the snap-in groove is arranged on the rear right upper cover.

3. The novel locking mechanism for a butterfly knife according to claim 2, characterized in that: A connecting column is provided between the rear right upper cover.

4. The novel locking mechanism for a butterfly knife according to claim 1, characterized in that: One end of the concealable locking block is provided with a mounting hole for mounting one end of the locking block spring.

5. The novel locking mechanism for a butterfly knife according to claim 1 is characterized in that: The left handle is provided with a mounting post for mounting the other end of the locking block spring.

6. The novel locking mechanism for a butterfly knife according to claim 1, characterized in that: A plurality of anti-slip operation grooves are provided on the outer side of one end of the concealable locking block.

7. The novel locking mechanism for a butterfly knife according to claim 1, characterized in that: The sliding protrusion is arranged in an elongated strip shape, and the sliding groove is arranged in an elongated strip shape.

8. The novel locking mechanism for a butterfly knife according to claim 1, characterized in that: The left handle and the right handle are both provided with abutment columns, and the blade is provided with abutment grooves corresponding to the abutment columns.

9. The novel locking mechanism for a butterfly knife according to claim 1, characterized in that: The left handle and the right handle are both provided with opening and closing operation slots.

10. The novel locking mechanism for a butterfly knife according to claim 1, characterized in that: Front upper covers are installed on the upper and lower sides of the front portion of the left handle and the upper and lower sides of the front portion of the right handle.

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