Steel wire thread insert capable of preventing excessive tightening

Abstract

The utility model discloses a wire thread insert capable of preventing excessive tightening, which comprises a mounting sleeve, the inner wall of the mounting sleeve is movably connected with a thread insert steel wire, the outer wall of the bottom of the thread insert steel wire is in threaded connection with a wire thread insert, the top of the mounting sleeve is fixedly connected with a rotating handle, and the thread insert steel wire comprises a thread insert steel wire rotating rod. An outer rotating shaft is fixedly connected to the outer wall of the thread sleeve steel wire rotating rod, a rotating disc is fixedly connected to the top of the thread sleeve steel wire rotating rod, a bottom rotating rod is fixedly connected to the bottom of the thread sleeve steel wire rotating rod, a steel wire is fixedly connected to the bottom of the bottom rotating rod, and the outer wall of the steel wire is in threaded connection to the inner wall of the bottom rotating rod. According to the steel wire thread insert convenient to install, the installing sleeve, the thread insert steel wire and the rotating handle are arranged to be matched with one another, the effect of conveniently installing the steel wire thread insert is achieved, the problem that the steel wire thread insert is damaged due to excessive tightening in the installing process is solved, and the practicability of the steel wire thread insert is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wire screw sleeves, in particular to a wire screw sleeve capable of preventing over-tightening. Background Art

[0002] Wire thread inserts are a new type of internal thread fasteners, suitable for threaded connections. They are screwed into and fastened in the threaded hole of one of the connected parts to form a standard internal thread, and the bolt (or screw) is then screwed into it. They are also called threaded wire inserts, or wire inserts for short. They are a spring-shaped internal and external threaded concentric body made of high-strength, high-precision, smooth-surfaced cold-rolled diamond stainless steel wire, and are mainly used to enhance and protect internal threads of low-strength materials. The principle is to form an elastic connection between the screw and the internal thread of the base, eliminate thread manufacturing errors, and improve the connection strength. Wire thread inserts are embedded in threaded holes of low-strength engineering materials such as aluminum, magnesium alloys, cast iron, fiberglass, and plastics to form high-precision internal threads that meet international standards. They have high connection strength, and are resistant to earthquakes, shocks, and wear. They can also disperse stress to protect the base thread, greatly extending the service life of the base, and are widely used in electronic applications.

[0003] According to the patent document: CN202811769U discloses a wire screw insert, which includes a body, the body having: a front end and a rear end, a first section having a first plurality of spiral coils and a first diameter, and a second section having at least one spiral coil and a second diameter. The second diameter of the second section is greater than the first diameter of the first section. The bolt is threadedly engaged with the screw insert, and the bolt / screw insert assembly is threadedly engaged with the hole of the workpiece. When the bolt / screw insert assembly is installed in the hole, the at least one spiral coil radially expands outward into the internal thread of the hole so that the at least one spiral coil remains disposed therein. The bolt can be removed while the screw insert remains in the hole.

[0004] At present, during the installation process of wire thread inserts, the installation effect of wire thread inserts is not firm enough. The bolts are easily screwed into the wire thread inserts, and during installation, the wire thread inserts need to be pressed into the threaded hole with force, which can easily cause the wire thread inserts to deform or be damaged, affecting the installation effect and service life. Utility Model Content

[0005] The purpose of the utility model is to provide a wire screw sleeve that can prevent over-tightening, so as to solve the problem that the installation effect of the wire screw sleeve proposed in the above-mentioned background technology is not firm enough, the bolt is easily over-tightened during the process of screwing the wire screw sleeve, and during installation, the wire screw sleeve needs to be pressed into the threaded hole with force, which easily causes the wire screw sleeve to deform or be damaged, affecting the installation effect and service life.

[0006] To achieve the above object, the utility model provides the following technical solution: a wire screw sleeve capable of preventing over-tightening, comprising a mounting sleeve, the inner wall of the mounting sleeve being movably connected with a screw sleeve steel wire, the bottom outer wall of the screw sleeve steel wire being threadedly connected with a wire screw sleeve, and the top of the mounting sleeve being fixedly connected with a turning handle;

[0007] The threaded steel wire includes a threaded steel wire rotating rod, the outer wall of the threaded steel wire rotating rod is fixedly connected to an outer rotating shaft, the top of the threaded steel wire rotating rod is fixedly connected to a rotating disk, the bottom of the threaded steel wire rotating rod is fixedly connected to a bottom rotating rod, and the bottom of the bottom rotating rod is fixedly connected to a steel wire.

[0008] Preferably, the outer wall of the steel wire is threadedly connected to the inner wall of the bottom rotating rod, and the top of the rotating disk is fixedly connected to the bottom of the rotating handle.

[0009] Preferably, the mounting sleeve comprises a mounting sleeve body, and three limiting support frames are fixedly connected to the outer wall of the mounting sleeve body in an annular array.

[0010] Preferably, the mounting sleeve body comprises a mounting sleeve shell, an inner wall of the mounting sleeve shell is provided with an inner rotation groove, and an outer wall of the mounting sleeve shell is provided with three slide grooves in a circular array.

[0011] Preferably, the outer wall of the threaded steel wire rotating rod is rotatably connected to the inner wall of the mounting sleeve shell, and the outer wall of the outer rotating shaft is rotatably connected to the inner wall of the inner rotating groove opened on the inner wall of the mounting sleeve shell.

[0012] Preferably, the three limiting support frames all include a first connecting block, one side of the three first connecting blocks are fixedly connected to the outer wall of the mounting sleeve shell in a circular array, the inner walls of the three first connecting blocks are movably connected to a screw rod, the tops of the three screw rods are fixedly connected to a screw rod rotating shaft, the bottoms of the three screw rods are movably connected to a second connecting block, and the rear sides of the three second connecting blocks are fixedly connected to the outer wall of the mounting sleeve shell in a circular array.

[0013] Preferably, the outer walls of the three screw rods are threadedly connected to transmission blocks, the three transmission blocks are fixedly connected to sliders on one side close to the mounting sleeve shell, the outer walls of the three sliders are slidably connected to the inner wall of the slide groove, and the three transmission blocks are fixedly connected to an L-shaped support leg on one side away from the slider.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By arranging the installation sleeve, the thread sleeve wire and the turning handle to cooperate with each other, the effect of facilitating the installation of the wire screw sleeve is achieved, the problem of damage to the wire screw sleeve caused by excessive tightening during installation is prevented, and the practicality of the wire screw sleeve is improved;

[0016] 2. By arranging the installation sleeve, the threaded sleeve wire and the turning handle to cooperate with each other, the effect of facilitating the installation of the wire threaded sleeve is achieved, and the problem of damage to the wire threaded sleeve caused by excessive tightening during installation is prevented, thereby improving the practicality of the wire threaded sleeve. At the same time, by arranging a limit support frame, the effect of supporting the outer shell of the installation sleeve is achieved, and the outer shell of the installation sleeve is prevented from shaking during the installation process, thereby improving the stability of the installation of the wire threaded sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the thread sleeve steel wire of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the installation sleeve of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the main body of the installation sleeve of the utility model;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the position-limiting support frame of the utility model.

[0022] In the figure: 1. mounting sleeve; 11. mounting sleeve body; 111. mounting sleeve shell; 112. inner rotating groove; 113. slide groove; 12. limit support frame; 121. first connecting block; 122. screw rod; 123. second connecting block; 124. screw rod shaft; 125. transmission block; 126. slider; 127. L-shaped supporting leg; 2. threaded steel wire; 21. threaded steel wire rotating rod; 22. outer rotating shaft; 23. turntable; 24. bottom rotating rod; 25. steel wire; 3. turning handle; 4. steel wire threaded sleeve. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The utility model provides a technical solution: a wire screw sleeve that can prevent over-tightening, including a mounting sleeve 1, an inner wall of the mounting sleeve 1 is movably connected with a screw sleeve steel wire 2, a bottom outer wall of the screw sleeve steel wire 2 is threadedly connected with a wire screw sleeve 4, and a top of the mounting sleeve 1 is fixedly connected with a turning handle 3.

[0025] See also Figure 2 , Figure 3 and Figure 4 The screw sleeve steel wire 2 includes a screw sleeve steel wire rotating rod 21, the outer wall of the screw sleeve steel wire rotating rod 21 is fixedly connected with an outer rotating shaft 22, the top of the screw sleeve steel wire rotating rod 21 is fixedly connected with a rotating disk 23, the bottom of the screw sleeve steel wire rotating rod 21 is fixedly connected with a bottom rotating rod 24, the bottom of the bottom rotating rod 24 is fixedly connected with a steel wire 25, the outer wall of the steel wire 25 is threadedly connected to the inner wall of the bottom rotating rod 24, the top of the rotating disk 23 is fixedly connected to the bottom of the turning handle 3, the installation sleeve 1 includes an installation sleeve main body 11, and the installation sleeve 1 includes an installation sleeve main body 11. The outer wall of the sleeve body 11 is fixedly connected to three limit support frames 12 in an annular array. The installation sleeve body 11 includes an installation sleeve shell 111. The inner wall of the installation sleeve shell 111 is provided with an inner rotation groove 112. The outer wall of the installation sleeve shell 111 is provided with three slide grooves 113 in an annular array. The outer wall of the screw sleeve wire rotating rod 21 is rotatably connected to the inner wall of the installation sleeve shell 111. The outer wall of the outer rotating shaft 22 is rotatably connected to the inner wall of the inner rotation groove 112 provided on the inner wall of the installation sleeve shell 111.

[0026] When it is necessary to install the wire screw sleeve 4, firstly, the wire screw sleeve 4 is threadedly connected to the outer wall of the steel wire 25, and then the wire screw sleeve 4 is placed on the inner wall of the groove where it needs to be installed, and then the turning handle 3 is rotated, and the turning handle 3 drives the turntable 23 to rotate, and the turntable 23 drives the screw sleeve wire turning rod 21 to rotate, and the screw sleeve wire turning rod 21 drives the outer rotating shaft 22 to rotate on the inner wall of the installation sleeve shell 111, and at the same time, the screw sleeve wire turning rod 21 drives the bottom turning rod 24 to rotate, and the bottom turning rod 24 drives the steel wire 25 to rotate, so that the steel wire 25 drives the wire screw sleeve 4 to rotate and move downward, and then the wire screw sleeve 4 is installed to the inner wall of the groove.

[0027] See also Figure 5The three limiting support frames 12 each include a first connecting block 121, one side of the three first connecting blocks 121 are all fixedly connected to the outer wall of the mounting sleeve shell 111 in an annular array, the inner walls of the three first connecting blocks 121 are all movably connected with screw rods 122, the tops of the three screw rods 122 are all fixedly connected with screw shafts 124, the bottoms of the three screw rods 122 are all movably connected with second connecting blocks 123, the rear sides of the three second connecting blocks 123 are all fixedly connected to the outer wall of the mounting sleeve shell 111 in an annular array, the outer walls of the three screw rods 122 are all threadedly connected with transmission blocks 125, the three transmission blocks 125 are fixedly connected to the sliding blocks 126 on one side close to the mounting sleeve shell 111, the outer walls of the three sliding blocks 126 are slidably connected to the inner wall of the sliding groove 113, and the three transmission blocks 125 are fixedly connected to the L-shaped supporting legs 127 on one side away from the sliding blocks 126;

[0028] When installation is required, first place the installation sleeve 1 at the required installation position, and then rotate the screw shaft 124 according to the size of the wire screw sleeve 4 to be installed. The screw shaft 124 drives the screw 122 to rotate, and the screw 122 drives the transmission block 125 to move. The transmission block 125 drives the slider 126 to slide on the inner wall of the slide groove 113. At the same time, the transmission block 125 drives the L-shaped support leg 127 to move, so that the L-shaped support leg 127 supports the installation sleeve shell 111 to prevent the installation sleeve shell 111 from shaking during the installation process, thereby improving the stability of the installation of the wire screw sleeve 4.

[0029] Working principle: when it is necessary to install the wire screw sleeve 4, firstly, the wire screw sleeve 4 is threadedly connected to the outer wall of the steel wire 25, and then the wire screw sleeve 4 is placed on the inner wall of the groove to be installed, and then the turning handle 3 is turned, the turning handle 3 drives the turntable 23 to rotate, the turntable 23 drives the screw sleeve wire rotating rod 21 to rotate, the screw sleeve wire rotating rod 21 drives the outer rotating shaft 22 to rotate on the inner wall of the installation sleeve shell 111, and at the same time, the screw sleeve wire rotating rod 21 drives the bottom rotating rod 24 to rotate, and the bottom rotating rod 24 drives the steel wire 25 to rotate, so that the steel wire 25 drives the wire screw sleeve 4 to rotate and move downward, so that the wire screw sleeve 4 is installed to the inner wall of the groove;

[0030] When installation is required, first place the installation sleeve 1 at the required installation position, and then rotate the screw shaft 124 according to the size of the wire screw sleeve 4 to be installed. The screw shaft 124 drives the screw 122 to rotate, and the screw 122 drives the transmission block 125 to move. The transmission block 125 drives the slider 126 to slide on the inner wall of the slide groove 113. At the same time, the transmission block 125 drives the L-shaped support leg 127 to move, so that the L-shaped support leg 127 supports the installation sleeve shell 111 to prevent the installation sleeve shell 111 from shaking during the installation process, thereby improving the stability of the installation of the wire screw sleeve 4.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire screw insert capable of preventing over-tightening, comprising a mounting sleeve (1), characterized in that: The inner wall of the installation sleeve (1) is movably connected to a threaded steel wire (2), the bottom outer wall of the threaded steel wire (2) is threadedly connected to a wire thread sleeve (4), and the top of the installation sleeve (1) is fixedly connected to a turning handle (3); The threaded steel wire (2) comprises a threaded steel wire rotating rod (21), the outer wall of the threaded steel wire rotating rod (21) is fixedly connected to an outer rotating shaft (22), the top of the threaded steel wire rotating rod (21) is fixedly connected to a rotating disk (23), the bottom of the threaded steel wire rotating rod (21) is fixedly connected to a bottom rotating rod (24), and the bottom of the bottom rotating rod (24) is fixedly connected to a steel wire (25).

2. A wire thread insert capable of preventing over-tightening according to claim 1, characterized in that: The outer wall of the steel wire (25) is threadedly connected to the inner wall of the bottom rotating rod (24), and the top of the rotating disk (23) is fixedly connected to the bottom of the rotating handle (3).

3. A wire thread insert capable of preventing over-tightening according to claim 1, characterized in that: The installation sleeve (1) comprises an installation sleeve main body (11), and three position-limiting support frames (12) are fixedly connected in an annular array to the outer wall of the installation sleeve main body (11).

4. A wire thread insert capable of preventing over-tightening according to claim 3, characterized in that: The mounting sleeve body (11) comprises a mounting sleeve outer shell (111), the inner wall of the mounting sleeve outer shell (111) is provided with an inner rotation groove (112), and the outer wall of the mounting sleeve outer shell (111) is provided with three slide grooves (113) in a circular array.

5. A wire thread insert capable of preventing over-tightening according to claim 1, characterized in that: The outer wall of the threaded steel wire rotating rod (21) is rotatably connected to the inner wall of the mounting sleeve shell (111), and the outer wall of the outer rotating shaft (22) is rotatably connected to the inner wall of the inner rotating groove (112) opened on the inner wall of the mounting sleeve shell (111).

6. A wire thread insert capable of preventing over-tightening according to claim 3, characterized in that: The three position-limiting support frames (12) each comprise a first connecting block (121); one side of the three first connecting blocks (121) is fixedly connected to the outer wall of the mounting sleeve shell (111) in a circular array; the inner walls of the three first connecting blocks (121) are movably connected to a screw rod (122); the tops of the three screw rods (122) are fixedly connected to a screw rod rotating shaft (124); the bottoms of the three screw rods (122) are movably connected to a second connecting block (123); and the rear sides of the three second connecting blocks (123) are fixedly connected to the outer wall of the mounting sleeve shell (111) in a circular array.

7. A wire thread insert capable of preventing over-tightening according to claim 6, characterized in that: The outer walls of the three screw rods (122) are all threadedly connected to transmission blocks (125); the sides of the three transmission blocks (125) close to the mounting sleeve housing (111) are all fixedly connected to sliders (126); the outer walls of the three sliders (126) are all slidably connected to the inner walls of the slide grooves (113); and the sides of the three transmission blocks (125) away from the sliders (126) are all fixedly connected to L-shaped support legs (127).

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