Threaded bushing connecting device

Abstract

The utility model relates to the technical field of threaded bushings, and discloses a threaded bushing connecting device which comprises a bolt thread sleeve and an assembly part, a through groove for a bolt to be inserted in is formed in the outer side wall of the bolt thread sleeve, the assembly part comprises a barrel, a positioning hole is formed in the side edge of the bottom of the barrel, a cavity is formed in the barrel, and the through groove is communicated with the positioning hole. A cavity is formed in the cylinder, a gear is rotationally installed in the cavity, the side edge of the gear is connected with an arc-shaped rack in a meshed mode, a sliding groove for the arc-shaped rack to move is formed in the cylinder, the sliding groove is communicated with the positioning hole, one end of the arc-shaped rack is connected with an abutting plate, and a groove matched with the abutting plate is formed in the plug pin. According to the utility model, the positioning hole is matched with the bolt, and the driving gear rotates to drive the arc-shaped rack to extend outwards, so that the abutting plate is driven to enter the groove of the bolt for locking, and the connection between the assembly part and the threaded bushing is realized; therefore, large binding force generated between the traditional assembling tool and the internal thread and the end face of the threaded bushing when the threaded bushing is assembled can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of threaded bushing technology, specifically to a threaded bushing connection device. Background Technology

[0002] In engineering manufacturing, due to the strength of the housing material, it is often necessary to install threaded bushings of better material into the threaded holes to increase the housing strength. Since the external thread of the threaded bushing and the housing thread are interference fit, a large torque is required to screw the threaded bushing into the housing when assembling the threaded bushing and housing threads manually with a wrench. At the same time, a large screwing force is also generated between the wrench and the internal thread and end face of the threaded bushing, resulting in a large binding force. Therefore, when removing it, it is necessary to overcome the binding force between the wrench and the threaded bushing. This process can easily cause the threaded bushing installed in the housing to loosen. Utility Model Content

[0003] The purpose of this utility model is to provide a threaded bushing connection device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a threaded bushing connection device, comprising a pin sleeve and an assembly, wherein a through groove for inserting the pin is provided on the outer wall of the pin sleeve, the assembly comprises a cylindrical body, a positioning hole for cooperating with the pin is provided on the bottom side of the cylindrical body, and a cavity is provided inside the cylindrical body, wherein a gear is rotatably installed in the cavity, and an arc-shaped rack is meshed on the side of the gear, wherein a sliding groove for moving the arc-shaped rack is provided inside the cylindrical body, the sliding groove is connected to the positioning hole, and an abutment plate is connected to one end of the arc-shaped rack near the positioning hole, and a groove for cooperating with the abutment plate is provided on the pin.

[0005] The following improvements are made in this application: a motor is installed at the top of the cavity, the output shaft of the motor is connected to the gear rotation shaft, and a clearance groove is provided on the side of the gear corresponding to the positioning hole.

[0006] The following improvement is made in this application: the bottom of the cylinder is provided with a positioning post that mates with the inner hole of the plug sleeve.

[0007] The following improvement is made in this application: several friction strips are circumferentially distributed on the outer wall of the cylinder above the positioning hole. This increases friction and facilitates the rotation of the cylinder by the operator.

[0008] The following improvements are made in this application: the pin includes an interference section and a guide section. The outer end face of the interference section protrudes from the external thread of the pin sleeve along the radial direction of the pin sleeve. The end of the guide section away from the interference section has a guide chamfer, and the connection between the interference section and the guide section has a transition chamfer. The interference section has a sufficiently large width to allow it to interference fit with the inner wall of the threaded hole in the housing, so that the pin is tightly embedded between the threaded hole and the sleeve.

[0009] The following improvement is made in this application: the length of the pin is greater than the length of the through slot. When the pin is pressed below the plane of the housing, the bottom of the pin can be inserted into the bottom hole of the housing, thereby improving the connection strength at the connection between the housing and the pin sleeve.

[0010] Compared with the prior art, this utility model provides a threaded bushing connection device, which has the following features:

[0011] Beneficial effects:

[0012] The threaded bushing connection device provided by this utility model uses a positioning hole and a pin to engage. The drive gear rotates and drives the arc-shaped rack to extend outward, thereby driving the abutment plate into the groove of the pin for locking, realizing the connection between the assembly and the threaded bushing. By rotating the assembly, the threaded bushing is screwed into the housing. After installation, the gear is rotated in the opposite direction to release the locking of the abutment plate to the pin. Then the assembly is pulled out and the pin is pressed into the housing plane. This can avoid the large bonding force generated between the traditional assembly tool (wrench) and the internal thread and end face of the threaded bushing during assembly, which would cause the threaded bushing that has been installed in the housing to loosen when it is removed. Attached Figure Description

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 This is a schematic diagram of the connection between the gear and the curved rack.

[0016] In the diagram: 1. Pin and threaded sleeve; 11. Through groove; 2. Assembly; 21. Cylinder; 211. Cavity; 212. Slide groove; 213. Motor; 22. Positioning hole; 23. Gear; 231. Clearance groove; 24. Arc-shaped rack; 25. Abutment plate; 26. Positioning pin; 27. Friction strip; 3. Pin; 31. Groove; 32. Interference fit section; 33. Inlet section. Detailed Implementation

[0017] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:

[0018] like Figure 1-3As shown, a threaded bushing connection device mainly consists of a pin sleeve 1 and an assembly 2. The outer wall of the pin sleeve 1 is provided with a pair of through slots 11 for the insertion of a pin 3. The two through slots 11 are arranged opposite to each other, and the length of the pin 3 is greater than the length of the through slots 11. When the pin 3 is pressed into the housing plane, the bottom of the pin 3 can be inserted into the bottom hole of the housing, thereby improving the connection strength at the connection between the housing and the pin sleeve 1. The pin 3 includes an interference section 32 and a guide section 33. The interference section 32 protrudes from the outer end face of the pin sleeve 1 along the radial direction of the pin sleeve 1. The interference section 32 has a sufficiently large width to allow it to be interference-fitted with the inner wall of the threaded hole of the housing, so that the pin 3 is tightly embedded between the threaded hole and the sleeve. The end of the guide section 33 away from the interference section 32 is provided with a guide chamfer, and the connection between the interference section 32 and the guide section 33 is provided with a transition chamfer.

[0019] Assembly 2 includes a cylindrical body 21. The bottom side of the cylindrical body 21 has a positioning hole 22 that mates with a pin 3. The cylindrical body 21 has an internal cavity 211. A gear 23 is rotatably mounted inside the cavity 211. A pair of arc-shaped racks 24 are meshed with the side of the gear 23. The interior of the cylindrical body 21 has a sliding groove 212 for the arc-shaped racks 24 to move. The sliding groove 212 communicates with the positioning hole 22. A stop plate 25 is connected to one end of the arc-shaped racks 24 near the positioning hole 22. A motor 213 is mounted at the top of the cavity 211. The output shaft of the motor 213 is connected to the rotation shaft of the gear 23, driving the motor 213 to rotate the gear 23. The rotation of the gear 23 transmits power. The arc-shaped rack 24 extends outward and pushes the abutment plate 24 into the positioning hole 22. At the same time, the pin 3 has a groove 31 that matches the abutment plate 5. The abutment plate 25 enters the groove 31 of the pin 3 to lock the pin 3, so as to realize the connection between the assembly and the threaded bushing. The gear 23 has a relief groove 231 on the side corresponding to the positioning hole 22 to prevent the gear 23 from colliding with the inner wall of the cylinder 21 at the positioning hole 22 during rotation. The bottom of the cylinder 21 has a positioning post 26 that matches the inner hole of the pin sleeve 1. Several friction rubber strips 27 are distributed circumferentially on the outer wall of the cylinder 21 above the positioning hole 22.

[0020] Working principle: The positioning hole 22 cooperates with the pin 3, and the drive gear 23 rotates to drive the arc rack 24 to extend outward, thereby driving the abutment plate 25 into the groove 31 of the pin 3 for locking, realizing the connection between the assembly 2 and the threaded bushing 1. By rotating the assembly 2, the threaded bushing 1 is screwed into the housing. After installation, the gear 23 is rotated in the opposite direction to release the locking of the abutment plate 25 on the pin 3. Then the assembly 2 is pulled out upward, pressing the pin 3 into the housing plane.

[0021] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A threaded bushing connection device, characterized in that: The assembly includes a pin sleeve (1) and an assembly (2). The pin sleeve (1) has a through groove (11) on its outer side wall for inserting a pin (3). The assembly (2) includes a cylindrical body (21). The bottom side of the cylindrical body (21) has a positioning hole (22) that mates with the pin (3). The cylindrical body (21) has a cavity (211) inside. A gear (23) is rotatably installed in the cavity (211). An arc-shaped rack (24) is meshed on the side of the gear (23). The cylindrical body (21) has a sliding groove (212) for moving the arc-shaped rack (24). The sliding groove (212) communicates with the positioning hole (22). An abutment plate (25) is connected to one end of the arc-shaped rack (24) near the positioning hole (22). The pin (3) has a groove (31) that mates with the abutment plate (25).

2. The threaded bushing connection device according to claim 1, characterized in that: A motor (213) is installed at the top of the cavity (211). The output shaft of the motor (213) is connected to the rotating shaft of the gear (23). The gear (23) has a clearance groove (231) on its side corresponding to the positioning hole (22).

3. The threaded bushing connection device according to claim 1, characterized in that: The bottom of the cylinder (21) is provided with a positioning post (26) that mates with the inner hole of the plug sleeve (1).

4. The threaded bushing connection device according to claim 1, characterized in that: The outer wall of the cylinder (21) above the positioning hole (22) is circumferentially distributed with several friction strips (27).

5. A threaded bushing connection device according to claim 1, characterized in that: The pin (3) includes an interference section (32) and a guide section (33). The interference section (32) protrudes from the outer end face of the pin sleeve (1) along the radial direction of the pin sleeve (1) and the guide section (33) is provided with a guide chamfer at one end away from the interference section (32). The connection between the interference section (32) and the guide section (33) is provided with a transition chamfer.

6. A threaded bushing connection device according to claim 5, characterized in that: The length of the pin (3) is greater than the length of the through slot (11).

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