Locking mechanism with adjustable tightness

Abstract

The utility model relates to a tightness-adjustable locking mechanism, which belongs to the technical field of welding auxiliary equipment and comprises a locker and a tightness-adjustable adjusting mechanism mounted in the locker. The locking device comprises a base, a buckling frame arranged at the top of the base and used for buckling the pipe fitting on the base, a connecting rod fixedly arranged at the bottom of one end of the buckling frame and rotationally arranged at the top of the base, a pressing rod rotationally arranged at the top of one end, deviating from the connecting rod, of the base, and a crank rotationally arranged between the bottom of one end, deviating from the connecting rod, of the buckling frame and the pressing rod; according to the pipe fitting fixing device, the pressing rod is pressed downwards to be matched with the connection of the crank, so that the buckling frame can tightly press a pipe fitting and buckle the pipe fitting on the base through components such as the upper locking block, the pipe fitting is quickly locked and fixed, and the distance between the rotating rod and the adjusting nut can be adjusted by rotating the adjusting nut; and the moving distance and range of the crank and the buckling frame are changed when the locking mechanism is pressed, so that the tightness degree of the pipe fitting during locking and fixing is adjusted.

Description

Technical Field

[0001] This utility model belongs to the technical field of welding auxiliary equipment, specifically relating to a locking mechanism with adjustable tightness. Background Technology

[0002] Welding is a processing technique and joining method that uses heat, pressure, or both to create an atomic bond between two workpieces of the same or different polarities. Welding is widely used for joining metals and non-metals and can be applied in fields such as semiconductor wafer manufacturing.

[0003] For example, fluoroplastic tubing used in semiconductor wafer manufacturing can transport high-purity gases (such as argon and nitrogen) and ultrapure water. Due to the specific nature of these applications, the requirements for the welding quality and the welding environment are extremely stringent. Therefore, during welding, locking mechanisms such as manual locking devices are needed to clamp and secure the tubing to prevent displacement and maintain welding quality.

[0004] However, since the movement distance and range of traditional manual locking mechanisms are fixed when tightening, it is easy for the pipe fittings of different sizes and specifications to be tightened too tightly or too loosely. Tightening the pipe fittings will damage the outer surface of the pipe fittings, while loosening the pipe fittings will easily cause them to shift during welding. In this regard, this application proposes a locking mechanism with adjustable tightness. Utility Model Content

[0005] The purpose of this invention is to provide a locking mechanism with adjustable tightness in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] An adjustable locking mechanism includes a locking device and an adjusting mechanism installed inside the locking device with adjustable tightness. The locking device includes a base, a buckle on the top of the base for fastening a pipe fitting to the base, a connecting rod fixed at the bottom of one end of the buckle and rotatably mounted on the top of the base, a pressure rod rotatably mounted at the top of the end of the base opposite to the connecting rod, and a crank rotatably mounted between the bottom of the end of the buckle opposite to the connecting rod and the pressure rod.

[0008] The pressure rod has a pressure groove at its bottom end. The adjustment mechanism includes a rotating rod that is rotatably mounted at the bottom end of the crank and slidably mounted at the top end of the pressure rod, a threaded rod that is fixedly mounted at the bottom of the rotating rod, and an adjusting nut that is threaded on the outer wall of the threaded rod and used to abut against the top end of the pressure groove to position the rotating rod.

[0009] As a further optimization of this utility model, a matching lower locking block is movably provided in the base, and a positioning rod is fixedly provided in the base. The positioning rod is inserted into the positioning hole opened at the bottom of the lower locking block, and an upper locking block for pressing and fixing the pipe fittings in the lower locking block is fixedly installed in the buckle frame by bolts.

[0010] As a further optimization of this utility model, a number of matching fixing bolts are movably installed in the holes opened at the bottom of the base.

[0011] As a further optimization of this utility model, a limiting groove communicating with the pressing groove is provided in the top end of the pressure rod, and the rotating rod is slidably disposed in the limiting groove of the pressure rod.

[0012] As a further optimization of this utility model, a washer is movably provided on the outer side of the threaded rod, and the washer is fitted between the top of the pressure groove of the pressure rod and the top surface of the adjusting nut.

[0013] As a further optimization of this utility model, the bottom of the adjusting nut is magnetically fixed with a magnetic sleeve for covering the bottom end of the threaded rod.

[0014] As a further optimization of this utility model, the bottom of the lower locking block is provided with an arc-shaped limiting groove, and the top of the base is provided with an arc-shaped limiting block that cooperates with the arc-shaped limiting groove.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. By pressing down the lever and connecting it with the crank, the buckle can press the pipe fittings onto the base through the upper locking block and other components, thereby quickly locking and fixing the pipe fittings. By rotating the adjusting nut, the distance between the lever and the adjusting nut can be adjusted to change the movement distance and range of the crank and buckle when the locking mechanism is pressing, thereby adjusting the tightness of the locking and fixing of the pipe fittings. It can press pipe fittings of different sizes and specifications, and has a wide range of applications.

[0017] 2. The lower locking block can be quickly disassembled and replaced by inserting the positioning rod into the positioning hole inside the lower locking block. The upper locking block inside the buckle can be quickly disassembled and installed by bolt connection, which is convenient and fast. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the internal connection of a partial structure of the base, buckle, and crank from another perspective of this utility model;

[0021] Figure 4 This is a top view of the connection between the base, crank, and pressure rod of this utility model;

[0022] Figure 5 This is the utility model Figure 2 Enlarged view of the A-structure;

[0023] Figure 6 This is the utility model Figure 3 Enlarged view of the B-structure.

[0024] In the diagram: 1. Base; 11. Lower locking block; 12. Fixing bolt; 13. Positioning rod; 14. Arc-shaped limit block; 2. Buckle; 21. Upper locking block; 3. Connecting rod; 4. Crank; 5. Pressure rod; 51. Limiting groove; 52. Pressure groove; 6. Rotating rod; 61. Threaded rod; 62. Adjusting nut; 63. Washer; 64. Magnetic sleeve. Detailed Implementation

[0025] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0026] Example

[0027] like Figure 1-6 As shown, an adjustable locking mechanism includes a locking device and an adjusting mechanism. The locking device includes a base 1, a buckle 2 located on the top of the base 1 for fastening the pipe fitting onto the base 1, a connecting rod 3 fixedly located at the bottom of one end of the buckle 2 and rotatably located on the top of the base 1, a pressure rod 5 rotatably located at the top of the end of the base 1 opposite to the connecting rod 3, and a crank 4 rotatably located between the bottom of the end of the buckle 2 opposite to the connecting rod 3 and the inner side of the pressure rod 5. The connecting rod 3 can connect the buckle 2 to one end of the base 1. When the pressure rod 5 is pressed down, it will pull the other end of the buckle 2 down through the crank 4, so that the buckle 2 can be fastened onto the base 1.

[0028] Furthermore, two protrusions are fixed on both sides of one end of the buckle 2, and the top of the crank 4 is fastened to the outside of the two protrusions. Through the connection of the protrusions, the top of the crank 4 can rotate on the buckle 2, and the top of the crank 4 can be removed from the buckle 2 for the placement of fluoroplastic pipes and other fittings.

[0029] like Figure 1-4 As shown, a number of matching fixing bolts 12 are movably installed in the holes opened at the bottom of the base 1. The base 1 can be fixedly installed on the welding equipment of fluoroplastic pipes and other pipe fittings by means of the fixing bolts 12.

[0030] like Figure 1-4 As shown, a matching lower locking block 11 is movably installed inside the base 1, and a positioning rod 13 is fixedly installed inside the base 1. The positioning rod 13 is inserted into the positioning hole opened at the bottom of the lower locking block 11. An upper locking block 21 for pressing and fixing the pipe inside the lower locking block 11 is fixedly installed inside the buckle 2 by bolts. When the buckle 2 is buckled on the base 1, it will drive the upper locking block 21 to move down and press and fix the pipe inside the lower locking block 11, thereby locking the pipe. The insertion of the positioning rod 13 into the positioning hole inside the lower locking block 11 facilitates the quick disassembly, assembly, and replacement of the lower locking block 11. The bolt connection allows for quick disassembly and assembly of the upper locking block 21 inside the buckle 2.

[0031] like Figure 1-4 As shown, the bottom of the lower locking block 11 is provided with an arc-shaped limiting groove, and the top of the base 1 is provided with an arc-shaped limiting block 14 that cooperates with the arc-shaped limiting groove. By inserting the arc-shaped limiting block 14 into the arc-shaped limiting groove of the lower locking block 11, the lower locking block 11 on the base 1 can be further positioned so that the lower locking block 11 will not shake or move on the base 1.

[0032] like Figure 2-6 As shown, the adjustment mechanism is installed inside the locking device and its tightness is adjustable. A pressure groove 52 is provided in the bottom end of the pressure rod 5. The adjustment mechanism includes a rotating rod 6 rotatably disposed at the bottom end of the crank 4 and slidably disposed in the top end of the pressure rod 5, a threaded rod 61 fixedly disposed at the bottom of the rotating rod 6, and an adjusting nut 62 threaded on the outer wall of the threaded rod 61 and used to abut against the top end of the pressure groove 52 to position the rotating rod 6. A limiting groove 51 communicating with the pressure groove 52 is provided in the top end of the pressure rod 5. The rotating rod 6 is slidably disposed in the limiting groove 51 of the pressure rod 5. The rotating rod 6 can connect the crank 4 and the pressure rod 5. The pressure rod 5 can limit the rotating rod 6 through the limiting groove 51.

[0033] By rotating the adjusting nut 62, the distance between the rotating rod 6 and the adjusting nut 62 can be adjusted to change the movement distance and range of the crank 4 and the buckle 2 when the locking mechanism is tightened, thereby controlling the distance between the base 1 and the buckle 2. This allows for the tightening of pipe fittings of different sizes and specifications, and adjustment of the tightness of the locking and fixing of the pipe fittings. For example, when it is necessary to adjust the pipe fittings with smaller diameters, the adjusting nut 62 can be rotated to move the threaded rod 61 towards the bottom of the pressure groove 52, thereby reducing the distance between the base 1 and the buckle 2 and increasing the clamping force after clamping the pipe fittings with smaller diameters.

[0034] like Figure 2-6 As shown, a washer 63 is movably provided on the outer side of the threaded rod 61. The washer 63 fits between the top of the pressure groove 52 of the pressure rod 5 and the top surface of the adjusting nut 62. The washer 63 can protect the pressure groove 52 and the adjusting nut 62, so that the adjusting nut 62 is not easy to damage the inner wall of the pressure groove 52.

[0035] like Figure 5-6 As shown, the bottom of the adjusting nut 62 is magnetically fixed with a magnetic sleeve 64 for covering the bottom end of the threaded rod 61. The adjusting nut 62 can be made of a metal material that can be attracted by magnetic materials. A magnet can be set inside the magnetic sleeve 64. The magnetic sleeve 64 protects the bottom end of the threaded rod 61.

[0036] It should be noted that, in use, this adjustable locking mechanism first uses the fixing bolts 12 to fix the base 1 to the welding equipment for pipe fittings such as fluoroplastic pipes. Then, the pipe fitting is placed in the lower locking block 11. After pressing down the pressure rod 5, the other end of the buckle 2 will be pulled down through the crank 4. This allows the buckle 2 to use the upper locking block 21 to fasten the pipe fitting onto the lower locking block 11 of the base 1, thereby quickly locking and fixing the pipe fitting.

[0037] Furthermore, by rotating the adjusting nut 62, the distance between the rotating rod 6 and the adjusting nut 62 can be adjusted to change the movement distance and range of the crank 4 and the buckle 2 when the locking mechanism is tightened, thereby controlling the distance between the base 1 and the buckle 2. This allows for the tightening of pipe fittings of different sizes and specifications, and adjustment of the tightness when locking and fixing the pipe fittings. For example, when it is necessary to adjust the pipe fittings with smaller diameters, the adjusting nut 62 can be rotated to move the threaded rod 61 towards the bottom of the pressure groove 52, thereby reducing the distance between the base 1 and the buckle 2 and increasing the clamping force after clamping the pipe fittings with smaller diameters.

[0038] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A locking mechanism with adjustable tightness, comprising a locker and an adjustable tightness adjusting mechanism installed in the locker, characterized in that: the locker comprises a base (1), a clamping frame (2) arranged on the top of the base (1) and used for clamping a pipe on the base (1), a connecting rod (3) fixedly arranged on the bottom of one end of the clamping frame (2) and rotatably arranged on the top of one end of the base (1) away from the connecting rod (3), a pressing rod (5) rotatably arranged on the top of one end of the base (1) away from the connecting rod (3), and a crank (4) rotatably arranged between the bottom of one end of the clamping frame (2) away from the connecting rod (3) and the pressing rod (5); a pressing groove (52) is arranged in the bottom end of the pressing rod (5), the adjusting mechanism comprises a rotating rod (6) rotatably arranged on the bottom end of the crank (4) and slidingly arranged in the top end of the pressing rod (5), a threaded rod (61) fixedly arranged on the bottom of the rotating rod (6), and an adjusting nut (62) threadedly arranged on the outer wall of the threaded rod (61) and used for abutting against the top end of the pressing groove (52) to position the rotating rod (6). A lower locking block (11) is movably arranged in the base (1), a positioning rod (13) is fixedly arranged in the base (1), the positioning rod (13) is inserted into a positioning hole arranged in the bottom of the lower locking block (11), and an upper locking block (21) for tightly fixing a pipe in the lower locking block (11) is fixedly arranged in the clamping frame (2) by bolts. A plurality of fixing bolts (12) are movably arranged in the hole arranged in the bottom of the base (1).

2. The adjustable slack lock mechanism according to claim 1, wherein: A limiting groove (51) in communication with the pressing groove (52) is arranged in the top end of the pressing rod (5), and the rotating rod (6) is slidingly arranged in the limiting groove (51) of the pressing rod (5).

3. The adjustable slack lock mechanism according to claim 1, wherein: A gasket (63) is movably arranged on the outer side of the threaded rod (61), and the gasket (63) is abutted against the top of the pressing groove (52) of the pressing rod (5) and the top surface of the adjusting nut (62).

4. The adjustable slack lock mechanism according to claim 1, wherein: A magnetic sleeve (64) for covering the bottom end of the threaded rod (61) is magnetically fixed to the bottom of the adjusting nut (62).

5. The adjustable slack lock mechanism of claim 1, wherein: An arc-shaped limiting groove is arranged in the bottom of the lower locking block (11), and an arc-shaped limiting block (14) is arranged on the top of the base (1) and matched with the arc-shaped limiting groove.

6. The adjustable slack lock mechanism of claim 1, wherein: ​ 7. The adjustable slack lock mechanism of claim 2, wherein: ​

Images