Rotary linkage locking structure for a knife

Abstract

The utility model discloses a rotary linkage locking structure of cutter, including handle, the front end of handle is hinged with a blade through center main shaft, the front end of handle is hinged with first rotation lock piece, the blade is installed with second rotation lock piece, the front side of first rotation lock piece is equipped with first abutting bayonet, the rear end of second rotation lock piece is equipped with the second abutting bayonet corresponding with first abutting bayonet, the front side of first rotation lock piece is equipped with front abutting camber surface, the rear end of second rotation lock piece is equipped with stop shaft corresponding with front abutting camber surface, the handle is installed with the spring of abutting first rotation lock piece rear side, first rotation lock piece is connected with a rotation push button, the utility model discloses simple structure, and the user can use the cutter more safely and efficiently flexibly, and the practicality of cutter is improved greatly, and rotation push button can be placed in 360 degrees any direction on handle, and the use of the blade of different people is more convenient to unlock, and the use effect is good.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, specifically to a rotary linkage locking structure for a cutting tool. Background Technology

[0002] Folding knives are portable cutting tools widely used in daily life due to their deformability and ease of storage. When not in use, they fold up for safe storage, with the blade concealed in the handle, preventing cuts. Folding knives typically feature a locking mechanism to prevent the blade from opening and closing unnecessarily, thus avoiding injury. This prevents the blade from opening unnecessarily when closed, preventing accidental opening in situations where users are likely to reach for items blindly in pockets or backpacks. However, existing folding knife locking mechanisms suffer from drawbacks due to the strong elasticity of the spring mechanism, resulting in less smooth, convenient, and flexible opening and locking, leading to unsatisfactory performance. Therefore, improvements to the existing technology are necessary to overcome these shortcomings. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies in the existing technology and provide a rotary linkage locking structure for cutting tools that is convenient to use and can be installed stably.

[0004] This utility model is achieved through the following technical solution:

[0005] A rotary linkage locking structure for a cutting tool includes a tool holder, a blade hinged to the front end of the tool holder via a central spindle, a first rotary locking plate hinged to the front end of the tool holder, a second rotary locking plate mounted on the blade, a first abutment slot on the front side of the first rotary locking plate, a second abutment slot corresponding to the first abutment slot on the rear end of the second rotary locking plate, a front abutment arc surface on the front side of the first rotary locking plate, a stop shaft corresponding to the front abutment arc surface on the rear end of the second rotary locking plate, a spring mounted on the tool holder abutting against the rear side of the first rotary locking plate, and a rotary push button connected to the first rotary locking plate.

[0006] Furthermore, connecting rings and washers are installed on both the left and right sides of the blade. The connecting rings and washers are sleeved on the outside of the central spindle, and the connecting rings are equipped with balls that are tactilely connected to the blade.

[0007] Furthermore, the central spindle is equipped with a locking screw, and a connecting ring is sleeved on the outside of the locking screw.

[0008] Furthermore, a blade closing abutment block is installed at the rear end of the blade holder.

[0009] Furthermore, the first rotating locking plate is provided with a rear abutting arc surface for the spring to abut against, and the first rotating locking plate is provided with a limiting post, which is located above the spring.

[0010] Furthermore, a spring is installed inside the handle, and a pressure ball is installed at the front end of the spring to abut against the blade.

[0011] Furthermore, the tool holder includes a left tool holder plate and a right tool holder plate.

[0012] Furthermore, the rotary push button is provided with several anti-slip raised textures.

[0013] Furthermore, the handle is equipped with a hook.

[0014] Furthermore, the blade is provided with an opening and closing operation groove.

[0015] Compared to existing technologies, this utility model features a first abutting slot on the front side of the first rotating locking plate and a second abutting slot corresponding to the first abutting slot on the rear end of the second rotating locking plate. The first rotating locking plate has a front abutting arc surface on its front side, and the second rotating locking plate has a stop shaft corresponding to the front abutting arc surface on its rear end. A spring is installed on the handle to abut against the rear side of the first rotating locking plate. A rotating push button is connected to the first rotating locking plate. When the blade needs to be opened after being in the closed state, the blade is pulled, and the blade begins to move towards the open state via the central spindle. Then, the first and second rotating locking plates rotate in conjunction under the action of the blade. After the first abutting slot of the first rotating locking plate and the second abutting slot of the second rotating locking plate contact and abut against each other, under the combined action of the spring force and the positioning action of the stop shaft, the first abutting slot... When the first and second locking tabs are fully locked, the blade is in a fully locked state, allowing for safe use. To close the blade, pull the rotary push button in the direction to be unlocked. This separates the first locking tab of the first rotary locking plate from the second locking tab of the second rotary locking plate, allowing the blade to be quickly unlocked and easily stored back in the handle. This makes the blade easy to carry. The rotary push button can be positioned in any 360° direction on the handle, catering to different user habits. Users can use the blade more safely, efficiently, and flexibly, greatly improving its practicality. Furthermore, the rotary push button's location on the handle ensures smooth operation and significantly enhances user safety when opening or closing the blade, preventing accidental injury. Locking and unlocking are convenient and effective. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the rotary linkage locking structure of the cutting tool of this utility model.

[0018] Figure 2 This is an exploded view of the rotary linkage locking structure of the cutting tool of this utility model.

[0019] Figure 3 This is a schematic diagram of the internal structure of the rotary linkage locking structure of the cutting tool of this utility model.

[0020] Figure 4 This is a schematic diagram showing that the rotary push button of this utility model can be arranged in multiple directions.

[0021] In the diagram: 1-Tool handle; 2-Central spindle; 3-Blade; 4-First rotating locking plate; 5-Second rotating locking plate; 6-First abutting latch; 7-Second abutting latch; 8-Front abutting arc surface; 9-Stop shaft; 10-Spring; 11-Rotating push button; 12-Connecting ring; 13-Washer; 14-Ball bearing; 15-Locking screw; 16-Connecting ring; 17-Blade closing abutting block; 18-Rear abutting arc surface; 19-Limiting post; 20-Spring piece; 21-Abutting ball bearing; 22-Left tool handle plate; 23-Right tool handle plate; 24-Anti-slip ridge; 25-Hook; 26-Opening and closing operation groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4The present invention discloses a rotary linkage locking structure for a cutting tool, comprising a tool holder 1, a blade 3 hinged to the front end of the tool holder 1 via a central spindle 2, a first rotary locking plate 4 hinged to the front end of the tool holder 1, a second rotary locking plate 5 mounted on the blade 3, a first abutting slot 6 on the front side of the first rotary locking plate 4, a second abutting slot 7 corresponding to the first abutting slot 6 on the rear end of the second rotary locking plate 5, a front abutting arc surface 8 on the front side of the first rotary locking plate 4, a stop shaft 9 corresponding to the front abutting arc surface 8 on the rear end of the second rotary locking plate 5, a spring 10 mounted on the tool holder 1 to abut against the rear side of the first rotary locking plate 4, and a rotary push button 11 connected to the first rotary locking plate 4. When the blade 3 needs to be opened after being in the closed state, pull the blade 3. The blade 3 will start to move towards the open state via the central spindle 2. Then, the first rotating locking plate 4 and the second rotating locking plate 5 will rotate in conjunction under the action of the blade 3. After the first abutting slot 6 of the first rotating locking plate 4 and the second abutting slot 7 of the second rotating locking plate 5 come into contact and abut against each other, under the elastic force of the spring 10 and the positioning action of the stop shaft 9, the first abutting slot 6 and the second abutting slot 7 will be completely locked. At this time, the blade 3 is in a fully locked state, so the tool can be used safely. When it is necessary to close the blade 3, pull the rotating push button 11 in the direction that needs to be unlocked, so that the first abutting slot 6 and the second abutting slot 7 are completely locked. The first abutting slot 6 of the rotating locking plate 4 and the second abutting slot 7 of the second rotating locking plate 5 are in a separated state, allowing the blade 3 to be quickly unlocked and easily and quickly stored back in the handle, making it convenient to carry the knife. The rotating push button 11 is set in any direction on the handle 1 at 360°, thus adapting to the usage habits of different people. Users can use the knife more safely, efficiently, and flexibly, greatly improving the practicality of the knife. Moreover, the rotating push button 11 is set on the handle 1, and the opening operation is smooth. When opening or closing the knife, the safety of the user is greatly guaranteed, avoiding the possibility of accidental injury. Locking and unlocking are convenient, and the use effect is good.

[0024] Connecting rings 12 and washers 13 are installed on both the left and right sides of the blade 3. The connecting rings 12 and washers 13 are both sleeved on the outside of the central spindle 2. The connecting rings 12 are equipped with balls 14 that are rolled and connected to the blade 3, so that the rotational contact friction of the blade 3 is smaller and the rotation is smoother.

[0025] The central spindle 2 is equipped with a locking screw 15, and a connecting ring 16 is sleeved on the outside of the locking screw 15 to facilitate the adjustment of the tightness of the blade 3 during installation.

[0026] The rear end of the handle 1 is equipped with a blade closing abutment block 17, which facilitates the positioning of the blade 3 when it is closed, thereby improving the safety and convenience of using the tool.

[0027] The first rotary locking plate 4 is provided with a rear abutting arc surface 18 for the spring 10 to abut against, so that the spring 10 abuts against the first rotary locking plate 4 stably, and the tool locking is more stable. The first rotary locking plate 4 is provided with a limiting post 19, which is located above the spring 10 to prevent the spring 10 from deforming excessively upward, and at the same time limit the rotation range of the first rotary locking plate 4.

[0028] A spring 20 is installed inside the handle 1. A pressing ball 21 is installed at the front end of the spring 20 to press against the blade 3, so that the blade 3 is in a pressed state to prevent the blade 3 from loosening after multiple opening and closing operations.

[0029] The tool holder 1 includes a left tool holder plate 22 and a right tool holder plate 23, which are fixed together by screws to facilitate the installation of components inside the tool holder 1.

[0030] The rotary push button 11 is provided with several anti-slip ridges 24 to improve the operational stability of the rotary push button 11. This is the rotary push button 11's rotating position, which can be set to any position in 360° to suit the usage habits of different people.

[0031] The handle 1 is equipped with a hook 25 for easy carrying of the folding knife.

[0032] The blade 3 is provided with an opening and closing operation groove 26, which facilitates the opening and closing of the blade 3.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary linkage locking structure for a cutting tool, characterized in that: The tool includes a handle, with a blade hinged to its front end via a central spindle. A first rotating locking plate is hinged to the front end of the handle, and a second rotating locking plate is mounted on the blade. The front side of the first rotating locking plate has a first abutment slot, and the rear end of the second rotating locking plate has a second abutment slot corresponding to the first abutment slot. The front side of the first rotating locking plate has a front abutment arc surface, and the rear end of the second rotating locking plate has a stop shaft corresponding to the front abutment arc surface. The handle is equipped with a spring that abuts against the rear side of the first rotating locking plate, and the first rotating locking plate is connected to a rotating push button.

2. The rotary linkage locking structure for the cutting tool according to claim 1, characterized in that: Connecting rings and washers are installed on both the left and right sides of the blade. The connecting rings and washers are sleeved on the outside of the central spindle. The connecting rings are equipped with balls that are tactilely connected to the blade.

3. The rotary linkage locking structure for the cutting tool according to claim 1, characterized in that: The central spindle is equipped with a locking screw, and a connecting ring is sleeved on the outside of the locking screw.

4. The rotary linkage locking structure for the cutting tool according to claim 1, characterized in that: The blade closing abutment block is installed at the rear end of the handle.

5. The rotary linkage locking structure for the cutting tool according to claim 1, characterized in that: The first rotating locking plate has a rear abutting arc surface for the spring to abut against, and the first rotating locking plate has a limiting post, which is located above the spring.

6. The rotary linkage locking structure for the cutting tool according to claim 1, characterized in that: A spring is installed inside the handle, and a pressure ball is installed at the front end of the spring to abut against the blade.

7. The rotary linkage locking structure for the cutting tool according to claim 1, characterized in that: The handle includes a left handle plate and a right handle plate.

8. The rotary linkage locking structure for the cutting tool according to claim 1, characterized in that: The rotary push button has several anti-slip ridges.

9. The rotary linkage locking structure for the cutting tool according to claim 1, characterized in that: The handle is equipped with a hook.

10. The rotary linkage locking structure for the cutting tool according to claim 1, characterized in that: The blade is provided with an opening and closing operation groove.

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