Anti-loosening nut and screw fastening connection structure
By using supporting plates, screw rods, slide grooves and limit plates in the nut and screw fastening connection structure, combined with the design of springs and reverse wire plates, the problem of loosening and falling of nuts is solved, and safety performance and stability are improved prevents movement due to vibration.
Patent Information
- Application Number
- CN202420874103.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-25
AI Technical Summary
During the use of the existing nut and screw fastening connection structure, the claws and the thread groove of the connecting object move relatively, resulting in the thread groove of the connecting object being easily de-wired and there is a risk of loosening.
A fastening connection structure for anti-loosening nut and screw including bolt mechanism and nut mechanism is designed, using support plate, screw rod, slide groove, limit plate, tooth plate, rotary shaft, rotary plate, rotary groove, limit thread pin The components such as the like, through the coordination of the limiting plate and the slide chute, use the interaction between the spring and the reverse wire plate to prevent the nut from loosening and falling off, and provide a reverse force when rotating to prevent movement due to vibration.
Effectively prevent the nut from falling off the screw surface, improve safety performance, ensure that the nut does not move due to looseness under rotation and vibration conditions, and enhance the stability of the fastening connection.
Smart Images
Figure CN222229129U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bolt fasteners, in particular to a fastening connection structure of an anti-loosening nut and a screw. Background Art
[0002] A bolt is a mechanical part, a cylindrical threaded fastener that is generally used to match a nut. It consists of a head and a screw (a cylinder with external threads). It is used to fasten two parts with through holes when used with a nut. This type of connection is called a bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.
[0003] A Chinese patent publication (publication number: CN214742654U) discloses an anti-loosening fastening screw structure for automotive parts, which includes a limited push rod installed inside the fixing screw, a fixing piece installed at the lower end of the fixing screw, the fixing piece is fixedly connected to the fixing screw, a spring is installed on the side of the fixing piece close to the fixing screw, the spring is fixedly connected to the fixing piece, an anti-loosening claw is installed inside the fixing piece, the anti-loosening claw is connected to the fixing piece through a slot, an extrusion block is installed at one end of the anti-loosening claw, the extrusion block is fixedly connected to the anti-loosening claw, and a fastening screw head is installed at the upper end of the fixing screw. The utility model belongs to the technical field of bolt fasteners, specifically a bolt fastener that prevents loosening, but in actual use, the claw and the thread groove of the connection object will move relative to each other, so the claw will damage the thread groove in the connection object, resulting in the risk of thread stripping in the thread groove of the connection object, so an anti-loosening nut and screw fastening connection structure is proposed. Utility Model Content
[0004] In view of this, the utility model provides a loosening-proof nut and screw fastening connection structure to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.
[0005] The technical solution of the utility model is implemented as follows: a structure for fastening and connecting a nut and a screw to prevent loosening, comprising a bolt mechanism and a nut mechanism, wherein the outer wall of the bolt mechanism is threadedly connected to the nut mechanism;
[0006] The bolt mechanism comprises a support plate, a screw rod, a slide groove, a limit plate, a tooth plate, a rotating shaft, a rotating plate, a rotation groove and a limit threaded pin, the inner side wall of the support plate is provided with a rotation groove, the inner part of the rotation groove is rotatably connected to the outer side of the rotating plate, the bottom end of the rotating plate is fixedly connected to the top end of the rotating shaft, the outer wall of the bottom end of the rotating shaft is fixedly connected to the gear, the outer side of the gear is meshedly connected to the outer wall of the tooth plate, the outer wall of the tooth plate is fixedly connected to the limit plate, the bottom end of the screw rod is provided with a symmetrical slide groove, the inner part of the slide groove is slidably connected to the outer wall of the limit plate;
[0007] The nut mechanism includes a nut body, an extrusion rod, a spring, a limit groove and a reverse thread plate. A limit groove is provided on one side of the nut body. The inner side wall of the limit groove is fixedly connected to one end of the spring. One end of the spring is fixedly connected to the outer wall of the extrusion rod. One end of the extrusion rod is fixedly connected to the reverse thread plate. The thread of the reverse thread plate rotates in the opposite direction to the thread of the nut body.
[0008] Further preferably, the bolt mechanism also includes a first limiting thread hole, a second limiting thread hole, a cross head and a limiting thread pin, a plurality of first limiting thread holes are equidistantly opened on the outer side of the rotating plate, and a second limiting thread hole is opened on one side of the supporting plate.
[0009] Further preferably, the limiting plate and the sliding groove are respectively arranged in a fan shape.
[0010] Further preferably, the outer wall of the rotating shaft passes through the interior of the support plate and the interior of the screw rod respectively.
[0011] Further preferably, the bottom end of the support plate is fixedly connected to the top end of the screw rod.
[0012] Further preferably, the top end of the rotating plate is fixedly connected to the crosshead, and the inside of the first limiting thread hole and the inside of the second limiting thread hole are respectively threadedly connected to the limiting threaded pins.
[0013] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:
[0014] When the utility model is in use, the limit plate is pushed out along the slide groove so that the limit plate is higher than the outer ring of the screw rod. When the nut is loosened and slides off, the nut can be effectively prevented from falling off the surface of the screw rod, thereby improving the safety performance. When the nut body is rotated, the extrusion rod is first pulled to move outward, and the spring inside the extrusion groove is squeezed to contract, and the extrusion rod drives the reverse thread plate to slide inside the limit groove. At this time, the nut body can be rotated up and down for rotation. When the extrusion rod is loosened, the reverse thread plate is buckled on the surface of the screw rod. The thread of the reverse thread plate is opposite to the thread direction of the inner side of the nut body. Therefore, when the nut body moves upward or downward, the reverse thread plate will provide an opposite force to prevent the nut body from moving due to factors such as vibration.
[0015] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 It is a structural diagram of the entire utility model;
[0018] Figure 2 This is the internal structure diagram of the utility model
[0019] Figure 3 For this utility model Figure 1 Another perspective structure diagram;
[0020] Figure 4 This is a transmission structure diagram of the utility model;
[0021] Figure 5 This is a structural diagram of the support plate of the utility model;
[0022] Figure 6 It is a structural diagram of the interior of the nut body of the utility model.
[0023] 1. Bolt mechanism; 101. Support plate; 102. Screw rod; 103. Slide groove; 104. Limit plate; 105. Tooth plate; 106. Rotating shaft; 107. Gear; 108. Rotating plate; 109. First limiting thread hole; 1010. Rotating groove; 1011. Second limiting thread hole; 1012. Cross head; 1013. Limiting thread pin; 2. Nut mechanism; 201. Nut body; 202. Extrusion rod; 203. Spring; 204. Limiting groove; 205. Reverse thread plate. DETAILED DESCRIPTION
[0024] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.
[0025] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.
[0026] like Figure 1-6 As shown, the embodiment of the utility model provides a structure for fastening a nut and a screw to prevent loosening, comprising a bolt mechanism 1 and a nut mechanism 2, wherein the outer wall of the bolt mechanism 1 is threadedly connected to the nut mechanism 2;
[0027] The bolt mechanism 1 includes a support plate 101, a screw rod 102, a slide groove 103, a limit plate 104, a tooth plate 105, a rotating shaft 106, a rotating plate 108, a rotating groove 1010 and a limit threaded pin 1013. The inner side wall of the support plate 101 is provided with a rotating groove 1010, and the interior of the rotating groove 1010 is rotatably connected to the outer side of the rotating plate 108. The bottom end of the rotating plate 108 is fixedly connected to the top of the rotating shaft 106. The outer wall of the bottom end of the rotating shaft 106 is fixedly connected to the gear 107. The outer side of the gear 107 is meshedly connected to the outer wall of the tooth plate 105. The outer wall of the tooth plate 105 is fixedly connected to the limit plate 104. The bottom end of the screw rod 102 is provided with a symmetrical slide groove 103. The interior of the slide groove 103 is slidably connected to the outer wall of the limit plate 104.
[0028] The nut mechanism 2 includes a nut body 201, an extrusion rod 202, a spring 203, a limiting groove 204 and a reverse thread plate 205. A limiting groove 204 is provided on one side of the nut body 201. The inner side wall of the limiting groove 204 is fixedly connected to one end of the spring 203. One end of the spring 203 is fixedly connected to the outer wall of the extrusion rod 202. One end of the extrusion rod 202 is fixedly connected to the reverse thread plate 205. The thread of the reverse thread plate 205 rotates in the opposite direction to the thread of the nut body 201. By pulling the extrusion rod 202 first when rotating the nut body 201, the reverse thread plate 205 is tightened. The pressure rod 202 moves outward and squeezes the spring 203 inside the limiting groove 204 to contract, and the squeezing rod 202 drives the reverse thread plate 205 to slide inside the limiting groove 204. At this time, the nut body 201 can be rotated up and down. When the squeezing rod 202 is released, the reverse thread plate 205 is buckled on the surface of the screw rod 102. The thread of the reverse thread plate 205 is opposite to the thread direction on the inner side of the nut body 201. Therefore, when the nut body 201 moves up or down, the reverse thread plate 205 will provide an opposite force to prevent the nut body 201 from moving due to vibration and other factors.
[0029] In one embodiment, the bolt mechanism 1 also includes a first limiting thread hole 109, a second limiting thread hole 1011, a crosshead 1012 and a limiting thread pin 1013. The outer side of the rotating plate 108 is provided with a plurality of first limiting thread holes 109 at equal intervals, and one side of the supporting plate 101 is provided with a second limiting thread hole 1011. The bottom end of the supporting plate 101 is fixedly connected to the top end of the screw rod 102, and the top end of the rotating plate 108 is fixedly connected to the crosshead 1012. The interior of the first limiting thread hole 109 and the interior of the second limiting thread hole 1011 are respectively threadedly connected to the limiting thread pin 1013. When the crosshead 1012 is rotated to a suitable position, the limiting thread pin 1013 is inserted into the second limiting thread hole 1011 provided on the outer side of the supporting plate 101 and the interior of the first limiting thread hole 109 provided on the rotating plate 108, so as to limit the rotating plate 108.
[0030] In one embodiment, the limiting plate 104 and the sliding groove 103 are respectively configured to be fan-shaped.
[0031] In one embodiment, the outer wall of the rotating shaft 106 penetrates through the interior of the support plate 101 and the interior of the screw rod 102 respectively, and the power can be transmitted to the gear 107 and the toothed plate 105 through the rotation of the rotating shaft 106 .
[0032] When the utility model is working: first, the nut body 201 and the screw rod 102 are connected together along the thread rotation, and the cross head 1012 at the top of the rotating support plate 101 is rotated in the direction of rotation, so as to drive the rotating plate 108 to rotate inside the rotating groove 1010 opened inside the support plate 101 and drive the rotating shaft 106 and the gear 107 to rotate. After the gear 107 rotates, it pushes the tooth plate 105 to move its position through meshing, and pushes the limit plate 104 along the slide groove 103, so that the limit plate 104 is higher than the outer ring of the screw rod 102. When the nut is loose and slides off, it can effectively prevent the nut from falling off the surface of the screw rod 102, thereby improving the safety performance. When the cross head 1012 is rotated to a suitable position, the limit thread pin 1013 is inserted into the second limit pin 1013 opened on the outside of the support plate 101. The interior of the first limiting thread hole 109 opened on the positioning thread hole 1011 and the rotating plate 108 is convenient for limiting the rotating plate 108. When rotating the nut body 201, the extrusion rod 202 is first pulled to move outward, and the spring 203 inside the limiting groove 204 is squeezed to contract, and the extrusion rod 202 drives the reverse thread plate 205 to slide inside the limiting groove 204. At this time, the nut body 201 can be rotated up and down. When the extrusion rod 202 is released, the reverse thread plate 205 is buckled on the surface of the screw rod 102. The thread of the reverse thread plate 205 is opposite to the thread direction on the inner side of the nut body 201. Therefore, when the nut body 201 moves up or down, the reverse thread plate 205 will provide an opposite force to prevent the nut body 201 from moving due to vibration and other factors.
[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A structure for fastening a nut and a screw to prevent loosening, characterized in that: It comprises a bolt mechanism (1) and a nut mechanism (2), wherein the outer wall of the bolt mechanism (1) is threadedly connected to the nut mechanism (2); The bolt mechanism (1) comprises a support plate (101), a screw rod (102), a slide groove (103), a limit plate (104), a tooth plate (105), a rotating shaft (106), a rotating plate (108), a rotating groove (1010) and a limit threaded pin (1013); the inner side wall of the support plate (101) is provided with a rotating groove (1010); the interior of the rotating groove (1010) is rotatably connected to the outer side of the rotating plate (108); the rotating plate (1010) is The bottom end of the screw rod (102) is fixedly connected to the top end of the rotating shaft (106), the outer wall of the bottom end of the rotating shaft (106) is fixedly connected to the gear (107), the outer side of the gear (107) is meshedly connected to the outer wall of the toothed plate (105), the outer wall of the toothed plate (105) is fixedly connected to the limit plate (104), and the bottom end of the screw rod (102) is provided with a symmetrical sliding groove (103), and the inside of the sliding groove (103) is slidably connected to the outer wall of the limit plate (104); The nut mechanism (2) comprises a nut body (201), an extrusion rod (202), a spring (203), a limiting groove (204) and a reverse thread plate (205); a limiting groove (204) is provided on one side of the nut body (201); an inner side wall of the limiting groove (204) is fixedly connected to one end of the spring (203); one end of the spring (203) is fixedly connected to the outer wall of the extrusion rod (202); one end of the extrusion rod (202) is fixedly connected to the reverse thread plate (205); and a thread of the reverse thread plate (205) rotates in the opposite direction to a thread of the nut body (201).
2. The anti-loosening nut and screw fastening connection structure according to claim 1, characterized in that: The bolt mechanism (1) further comprises a first limiting thread hole (109), a second limiting thread hole (1011), a cross head (1012) and a limiting thread pin (1013); a plurality of first limiting thread holes (109) are equidistantly provided on the outer side of the rotating plate (108); and a second limiting thread hole (1011) is provided on one side of the supporting plate (101).
3. The anti-loosening nut and screw fastening connection structure according to claim 1, characterized in that: The limiting plate (104) and the sliding groove (103) are respectively arranged in a fan shape.
4. The anti-loosening nut and screw fastening connection structure according to claim 1, characterized in that: The outer wall of the rotating shaft (106) passes through the interior of the supporting plate (101) and the interior of the screw rod (102) respectively.
5. The anti-loosening nut and screw fastening connection structure according to claim 1, characterized in that: The bottom end of the support plate (101) is fixedly connected to the top end of the screw rod (102).
6. The anti-loosening nut and screw fastening connection structure according to claim 2, characterized in that: The top end of the rotating plate (108) is fixedly connected to the crosshead (1012), and the inside of the first limiting thread hole (109) and the inside of the second limiting thread hole (1011) are respectively threadedly connected to the limiting threaded pin (1013).