Self-locking check bolt wrench

Abstract

The invention discloses a self-locking check bolt wrench. Comprising a main body structure, a positioning pin, a locking mechanism, a compression spring, a movable handle and a locking base, the main body structure is provided with a through hole at the upper part for mounting a movable handle, a threaded hole at the middle part for mounting a positioning pin, and threads at the lower part for connecting with a bracket base; the positioning pin is mounted on the main body structure and is used for fixing the locking mechanism and guiding the locking mechanism to move up and down; an L-shaped groove is formed in the middle of the locking mechanism and used for guiding when the locking mechanism moves, and triangular teeth are manufactured on the lower portion of the locking mechanism and used for being meshed with the locking base. The compression spring is used for preventing the locking mechanism from bouncing; the two ends of the movable handle are reamed or provided with stop devices to prevent the movable handle from disengaging from the through hole in the main body structure. Triangular teeth are manufactured on the upper portion of the locking base and used for being meshed with a locking mechanism. The device does not need tool assistance during use, and is convenient and fast.

Description

Technical Field

[0001] The invention relates to a self-locking and anti-loosening bolt wrench, in particular to a bolt wrench which can realize the anti-loosening function without additional tools such as fuses. Background Art

[0002] Bolt wrenches have built-in operating handles and do not require tools for disassembly and assembly. They are widely used in aircraft ammunition carriers and aircraft packaging boxes. They are usually used as pressure plates for aircraft to prevent aircraft from moving. Ordinary bolt wrenches have poor anti-loosening performance. When the aircraft needs to be transported over long distances and in harsh vibration environments, they need to be secured to prevent loosening, which is time-consuming and laborious. Summary of the invention

[0003] The purpose of the present invention is to provide a self-locking anti-loosening bolt wrench. The present invention does not require the assistance of tools when used, and is convenient and quick.

[0004] Technical solution. A self-locking anti-loosening bolt wrench, including a main structure, a positioning pin, a locking mechanism, a compression spring, a movable handle, and a locking base; the main structure has a through hole on the upper part for installing the movable handle, a threaded hole in the middle part for installing the positioning pin, and a threaded bottom part for connecting with the bracket base; the positioning pin is installed on the main structure, used to fix the locking mechanism and provide a guide for the locking mechanism to move up and down; the locking mechanism has an "L"-shaped groove in the middle part for guiding the locking mechanism when it moves, and a triangular tooth is formed on the lower part for engaging with the locking base; the compression spring is used to prevent the locking mechanism from bouncing up; the two ends of the movable handle are enlarged or stop devices are installed to prevent the movable handle from falling out of the through hole on the main structure; the locking base has triangular teeth formed on the upper part for engaging with the locking mechanism.

[0005] In the aforementioned self-locking anti-loosening bolt wrench, the locking base is fixedly connected to the pressing plate or the workpiece to be fastened.

[0006] In the aforementioned self-locking anti-loosening bolt wrench, the main structure is a cylindrical structure that is thick at the top and thin at the bottom. A thread is made on the lower cylinder for engaging and tightening with the thread at the base of the bracket. The diameter of the upper cylinder is larger than that of the lower cylinder, and its shoulder can press the pressure plate. There is a threaded hole in the middle for installing a locating pin, and a through hole in the upper position for installing a movable handle.

[0007] In the aforementioned self-locking anti-loosening bolt wrench, the positioning pin has a smooth rod at one end and a threaded rod at the other end, which is installed in the threaded hole in the middle of the main structure to fix the locking mechanism and prevent the locking mechanism from rotating. The groove on the locking mechanism can provide a guide for the movement of the locking mechanism.

[0008] In the aforementioned self-locking anti-loosening bolt wrench, the locking mechanism, positioning pin, compression spring, and locking base constitute a locking device. The locking mechanism is fixed to the main structure through the positioning pin and guides the movement of the locking mechanism. The compression spring provides downward pressure to the locking mechanism so that the locking mechanism is fully engaged with the locking base.

[0009] In the aforementioned self-locking anti-loosening bolt wrench, the movable handle is installed in the through hole of the main structure and can move freely in the through hole. The holes at both ends are enlarged or other stopping devices are installed to prevent the movable handle from escaping from the through hole of the main structure.

[0010] In the aforementioned self-locking anti-loosening bolt wrench, the lower part of the compression spring is stopped by the shoulder of the locking mechanism, and the upper part is stopped by the movable handle. The compression spring is still in a compressed state at the maximum stroke after installation.

[0011] In the aforementioned self-locking and anti-loosening bolt wrench, the "L"-shaped groove vertical groove on the locking mechanism cooperates with the positioning pin to prevent the locking mechanism from escaping from the main structure and provide a guide for the movement of the main structure. The transverse groove cooperates with the positioning pin to enable the locking mechanism and the locking base to be in a separated state without external force during the tightening or loosening process of the bolt wrench.

[0012] In the aforementioned self-locking anti-loosening bolt wrench, a self-locking anti-loosening bolt wrench includes a main body structure, a positioning pin, a locking mechanism, a compression spring, a movable handle, and a locking base.

[0013] In the aforementioned self-locking anti-loosening bolt wrench, the locking base is fixedly connected to the pressure plate by screws or welding.

[0014] Beneficial effects: The present invention adds an anti-loosening device to the bolt wrench itself without changing the basic structure of the bolt wrench, thereby improving the anti-loosening ability of the bolt wrench and simplifying the operation. The present invention adopts a modular design, and an anti-loosening module can be added to an ordinary bolt wrench to achieve self-locking of the bolt wrench.

[0015] The present invention can effectively prevent the bolt wrench from loosening due to environmental factors such as vibration by meshing the teeth between the locking mechanism and the locking base in combination with the downward pressure of the compression spring.

[0016] The invention is easy to operate and does not require other auxiliary anti-loosening means such as insurance when in use, which can save a lot of operation time;

[0017] The bolt wrench of the present invention is provided with an unlocking state, and no external force is required to separate the locking mechanism and the locking base during tightening or loosening, which is convenient for operation;

[0018] The invention has a simple structure, few parts, high reliability and low manufacturing cost;

[0019] The bolt wrench of the present invention does not require any tool assistance when used, and is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the use scenarios and components of a self-locking anti-loosening bolt wrench;

[0021] Figure 2 It is a schematic diagram of the locking base and the pressure plate structure;

[0022] Figure 3 This is a detailed schematic diagram of the main structure.

[0023] Figure markings: 1-1, main structure; 1-2, positioning pin; 1-3, locking mechanism; 1-4, compression spring; 1-5, movable handle; 1-6, "L"-shaped groove; 1-7, upper through hole; 1-8, positioning pin threaded hole; 2-1, locking base; 2-2, pressure plate; 3-1, bracket base. DETAILED DESCRIPTION

[0024] Example 1. A self-locking anti-loosening bolt wrench, see Figure 1-Figure 3 , which includes a main structure 1-1, a positioning pin 1-2, a locking mechanism 1-3, a compression spring 1-4, a movable handle 1-5, and a locking base 2-1. The main structure 1-1 is a "T"-shaped cylindrical structure, with a through hole on the upper part for installing the movable handle 1-5, a threaded hole in the middle part for installing the positioning pin 1-2, and a threaded bottom part for connecting with the bracket base 3-1; the positioning pin 1-2 is a cylindrical structure, with a bare rod at one end and a threaded end at the other end, which is installed on the main structure 1-1, used to fix the locking mechanism 1-3 and provide a guide for the locking mechanism 1-3 to move up and down; the locking mechanism 1 -3 is a "T"-shaped cylindrical structure with an "L"-shaped groove 1-6 in the middle, which is used to guide the locking mechanism 1-3 when it moves, and triangular teeth are made on the lower part for engaging with the locking base 2-1; the compression spring 1-4 is used to provide initial downward pressure to prevent the locking mechanism 1-3 from bouncing up; the movable handle 1-5 is a cylindrical structure with expanded holes at both ends or other stopping devices installed to prevent the movable handle 1-5 from escaping from the through hole on the main structure 1-1; the locking base 2-1 is a cylindrical structure with triangular teeth made on the upper part for engaging with the locking mechanism 1-3, and is generally fixed to the pressure plate 2-2 or other workpiece to be fastened.

[0025] Preferably, the main structure 1-1 is a cylindrical structure that is thick at the top and thin at the bottom. A thread is made on the lower cylinder for engaging and tightening with the thread at the bracket base 3-1. There is a threaded hole for installing the locating pin 1-2 in the middle of the upper cylinder, and a through hole for installing the movable handle 1-5 at the upper position.

[0026] Preferably, the positioning pin 1-2 is a cylindrical structure with a smooth rod at one end and a threaded rod at the other end, and is installed on the main structure 1-1 to fix the locking mechanism 1-3 to prevent the locking mechanism 1-3 from rotating, and cooperates with the groove on the locking mechanism 1-3 to provide guidance for the movement of the locking mechanism 1-3.

[0027] Preferably, the locking device includes a locking mechanism 1-3, a positioning pin 1-2, a compression spring 1-4, a locking base 2-1, etc. The locking mechanism 1-3 is fixed to the main structure 1-1 through the positioning pin 1-2, and the locking mechanism 1-3 is guided to move. The compression spring 1-4 provides downward pressure to the locking mechanism 1-3, so that the locking mechanism 1-3 is fully engaged with the locking base 2-1, thereby achieving a self-locking and anti-loosening effect.

[0028] Preferably, the movable handle 1-5 is installed in the through hole of the main structure 1-1 and can move freely in the through hole. The holes at both ends are enlarged or other stopping devices are installed to prevent the movable handle 1-5 from escaping from the through hole of the main structure 1-1.

[0029] Preferably, the lower part of the compression spring 1-4 is stopped by the shoulder of the locking mechanism 1-3, and the upper part is stopped by the movable handle 1-5. The compression spring 1-4 is still in a compressed state at the maximum stroke after installation.

[0030] Preferably, the "L"-shaped groove 1-6 on the locking mechanism 1-3 and the vertical groove cooperate with the positioning pin 1-2 to fix the locking mechanism 1-3 so that it will not fall off the main structure 1-1, and the horizontal groove cooperates with the positioning pin 1-2 to keep the locking mechanism 1-3 and the locking base 2-1 in a separated state during the tightening or loosening of the bolt wrench.

[0031] Example 2. A self-locking anti-loosening bolt wrench, see Figure 1-Figure 3:It includes a main structure 1-1, a positioning pin 1-2, a locking mechanism 1-3, a compression spring 1-4, a movable handle 1-5, and a locking base 2-1; the positioning pin 1-2, the locking mechanism 1-3, the compression spring 1-4, and the movable handle 1-5 are installed on the main structure 1-1; the main structure 1-1 is a "T"-shaped cylindrical structure, with a through hole in the upper part for installing the movable handle 1-5, a threaded hole in the middle part for installing the positioning pin 1-2, and a threaded bottom part for connecting with the bracket base 3-1; the positioning pin 1-2 is a cylindrical structure, with a bare rod at one end and a threaded end, which is installed on the main structure 1-1, used to fix the locking mechanism 1-3 and is a lock. The fixing mechanism 1-3 provides guidance when moving up and down; the locking mechanism 1-3 is a "T"-shaped cylindrical structure with an "L"-shaped groove 1-6 in the middle for guiding the locking mechanism 1-3 when it moves, and triangular teeth are made on the lower part for engaging with the locking base 2-1; the compression spring 1-4 is used to provide initial downward pressure to prevent the locking mechanism 1-3 from bouncing up; the movable handle 1-5 is a cylindrical structure with expanded holes at both ends or other stopping devices installed to prevent the movable handle 1-5 from escaping from the through hole on the main structure 1-1; the locking base 2-1 is a cylindrical structure with triangular teeth made on the upper part for engaging with the locking mechanism 1-3, and is generally fixedly connected to the pressure plate 2-2 or other workpieces to be fastened.

[0032] The specific structure is as follows:

[0033] The locking mechanism 1-3 is fixed to the main structure 1-1 by means of the positioning pin 1-2 and the compression spring 1-4. When movement is required, the "L"-shaped groove 1-6 on the locking mechanism 1-3 provides guidance. The positioning pin 1-2 on the locking mechanism 1-3 moves into the horizontal groove of the "L"-shaped groove 1-6, so that the locking mechanism 1-3 and the locking base 2-1 are in a separated state, which is convenient for tightening or loosening operations. When the locking mechanism 1-3 moves into the vertical groove of the "L"-shaped groove 1-6, the locking mechanism 1-3 will engage with the triangular teeth on the locking base 2-1 under the action of the compression spring 1-4, thereby achieving a self-locking and anti-loosening effect; the locking base 2-1 is fixedly connected to the pressure plate or other workpieces that need to be tightened; the bracket base 3-1 is fastened by the thread at the lower part of the main structure 1-1, so that the pressure plate 2-2 is fixedly connected to the bracket base 3-1, thereby preventing the aircraft or the clamped object from moving.

[0034] In this embodiment, one set of brackets generally uses two self-locking anti-loosening bolt wrenches; one self-locking anti-loosening bolt wrench includes a main structure 1-1, a positioning pin 1-2, a locking mechanism 1-3, a compression spring 1-4, a movable handle 1-5, and a locking base 2-1; of course, the number of self-locking anti-loosening bolt wrenches can also be selected according to actual conditions; the locking base 2-1 is generally fixed to the pressure plate 2-2 by screws or welding; the movable handle 1-5 can slide freely in the through hole 1-7 on the main structure 1-1, and generally the two ends are expanded or other stopping devices are installed to prevent the movable handle 1-5 from escaping from the through hole on the main structure 1-1.

[0035] Usage process:

[0036] Tighten the self-locking anti-loosening bolt wrench: pull the locking mechanism 1-3 upward until the positioning pin 1-2 moves to the horizontal groove of the "L"-shaped groove 1-6, rotate the locking mechanism 1-3 clockwise to move the positioning pin 1-2 into the horizontal groove of the "L"-shaped groove 1-6, and tighten the self-locking anti-loosening bolt wrench through the movable handle 1-5. After the bolt wrench is tightened, rotate the locking mechanism 1-3 counterclockwise to move the positioning pin 1-2 into the vertical groove of the "L"-shaped groove 1-6, and release the locking mechanism 1-3. The locking mechanism 1-3 engages with the triangular teeth on the locking base 2-1 under the action of the compression spring 1-4, thereby having a self-locking and anti-loosening effect.

[0037] Loosen the self-locking anti-loosening bolt wrench: pull the locking mechanism 1-3 upward until the positioning pin 1-2 moves to the horizontal groove of the "L"-shaped groove 1-6, rotate the locking mechanism 1-3 clockwise to move the positioning pin 1-2 to the horizontal groove of the "L"-shaped groove 1-6, and loosen the self-locking anti-loosening bolt wrench through the movable handle 1-5.

[0038] The above embodiments are only preferred embodiments of the present invention and do not constitute a limitation of the present invention. It should be understood by those skilled in the art that any extension, modification and equivalent substitution made without departing from the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-locking anti-loosening bolt wrench, characterized in that: The invention comprises a main structure (1-1), a positioning pin (1-2), a locking mechanism (1-3), a compression spring (1-4), a movable handle (1-5), and a locking base (2-1); the main structure (1-1) has a through hole at the top for installing the movable handle (1-5), a threaded hole in the middle for installing the positioning pin (1-2), and a threaded hole at the bottom for connecting with a bracket base (3-1); the positioning pin (1-2) is installed on the main structure (1-1) and is used to fix the locking mechanism (1-3) and to provide a locking mechanism (1-3) with a plurality of locking pins. The locking mechanism (1-3) is provided with an L-shaped groove (1-6) in the middle for guiding the locking mechanism (1-3) when it moves, and a triangular tooth is formed on the lower part for engaging with the locking base (2-1); a compression spring (1-4) is used to prevent the locking mechanism (1-3) from bouncing up; holes are enlarged or stoppers are installed at both ends of the movable handle (1-5) to prevent the movable handle (1-5) from falling out of the through hole on the main structure (1-1); and triangular teeth are formed on the upper part of the locking base (2-1) for engaging with the locking mechanism (1-3).

2. The self-locking anti-loosening bolt wrench according to claim 1 is characterized in that: The locking base (2-1) is fixedly connected to the pressing plate (2-2) or the workpiece to be fastened.

3. The self-locking anti-loosening bolt wrench according to claim 1 is characterized in that: The main structure (1-1) is in the shape of a cylindrical structure with a thick top and a thin bottom. A thread is formed on the lower cylinder for engaging and tightening with the thread at the bracket base (3-1). The upper cylinder has a larger diameter than the lower cylinder, and its shoulder portion can press the pressure plate (2-2). A threaded hole is provided in the middle portion for installing a positioning pin (1-2), and a through hole is provided in the upper portion for installing a movable handle (1-5).

4. The self-locking anti-loosening bolt wrench according to claim 1, characterized in that: The positioning pin (1-2) has a smooth rod at one end and a threaded rod at the other end, and is installed in a threaded hole in the middle of the main structure (1-1) to fix the locking mechanism (1-3) to prevent the locking mechanism (1-3) from rotating, and cooperates with the groove on the locking mechanism (1-3) to provide a guide for the movement of the locking mechanism (1-3).

5. The self-locking anti-loosening bolt wrench according to claim 1, characterized in that: The locking mechanism (1-3), the positioning pin (1-2), the compression spring (1-4) and the locking base (2-1) constitute a locking device. The locking mechanism (1-3) is fixed to the main structure (1-1) through the positioning pin (1-2) and guides the movement of the locking mechanism (1-3). The compression spring (1-4) provides downward pressure to the locking mechanism (1-3) so that the locking mechanism (1-3) and the locking base (2-1) are fully engaged.

6. The self-locking anti-loosening bolt wrench according to claim 1, characterized in that: The movable handle (1-5) is installed in the through hole of the main structure (1-1) and can move freely in the through hole. The two ends are enlarged or other stop devices are installed to prevent the movable handle (1-5) from falling out of the through hole of the main structure (1-1).

7. The self-locking anti-loosening bolt wrench according to claim 1, characterized in that: The lower part of the compression spring (1-4) is stopped by the shoulder of the locking mechanism (1-3), and the upper part is stopped by the movable handle (1-5). The compression spring (1-4) is still in a compressed state at the maximum stroke after installation.

8. The self-locking anti-loosening bolt wrench according to claim 1, characterized in that: The "L"-shaped groove (1-6) on the locking mechanism (1-3) cooperates with the positioning pin (1-2) to prevent the locking mechanism (1-3) from escaping from the main structure (1-1) and to provide a guide for the movement of the main structure (1-1). The transverse groove cooperates with the positioning pin (1-2) to enable the locking mechanism (1-3) and the locking base (2-1) to be in a separated state without external force during the process of tightening or loosening the bolt with a wrench.

9. The self-locking anti-loosening bolt wrench according to claim 1, characterized in that: A self-locking anti-loosening bolt wrench comprises a main structure (1-1), a positioning pin (1-2), a locking mechanism (1-3), a compression spring (1-4), a movable handle (1-5), and a locking base (2-1).

10. The self-locking anti-loosening bolt wrench according to claim 1, characterized in that: The locking base (2-1) is fixedly connected to the pressing plate (2-2) by means of screws or welding.

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