A bolt assembly and microwave transmission device
Patent Information
- Application Number
- CN202522225679.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-10-21
AI Technical Summary
The existing nuts are prone to loosening during connection, leading to gaps and affecting microwave transmission performance.
A bolt assembly is designed, including a bolt shank, a fastening nut, a lock nut, and a lock slider. The nut is prevented from rotating by the cooperation of the locking rod and the annular groove. Continuous axial pressure is achieved by the compressible structure of the spring washer and the locking rod to prevent loosening.
It effectively prevents nuts from loosening, maintains tightening force, ensures the connection stability of microwave transmission devices, and avoids the formation of gaps.
Smart Images
Figure CN224932024U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fasteners, and more specifically, to a bolt assembly and a microwave transmission device. Background Technology
[0002] Bolts and nuts, as fasteners, are often used in applications requiring detachable connections. However, because nuts are prone to loosening, various methods are typically employed to prevent them from doing so. Existing anti-loosening methods, however, are often ineffective and fail to meet the required standards. For example, in microwave transmission, waveguides are generally connected by flanges, which are then secured with bolts and nuts. If the nuts loosen, gaps may appear between the two waveguides, affecting microwave transmission. Utility Model Content
[0003] The purpose of this invention is to provide a bolt assembly with good anti-loosening effect.
[0004] Another objective of this invention is to provide a microwave transmission device that employs the aforementioned bolt assembly.
[0005] This utility model is implemented as follows: A bolt assembly includes a bolt shank, a fastening nut, a lock nut, and a lock slider; the fastening nut is threadedly connected to the bolt shank. The bolt rod includes a lead screw and a bolt head disposed at one end of the lead screw. The lead screw has a strip-shaped hole that extends along the axial direction of the lead screw and penetrates the lead screw radially. The anti-loosening slider is disposed in the strip hole and can slide along the axial direction of the lead screw; a locking rod is provided on both sides of the anti-loosening slider, and the locking rod is a compressible structure. The anti-loosening nut is threadedly connected to the lead screw. An annular groove is provided on the inner wall of the threaded hole of the anti-loosening nut. A plurality of evenly distributed locking through holes are provided at the bottom of the annular groove. The locking through holes extend radially along the anti-loosening nut. The end of the locking rod can extend into the corresponding locking through hole and can retract into the annular groove under the action of external force.
[0006] Furthermore, the end of the locking rod is hemispherical, and the locking through hole is a trapezoidal hole, including a large-diameter hole and a small-diameter hole. The large-diameter hole is located inside the anti-loosening nut. The depth of the large-diameter hole is less than the radius of the end of the locking rod, so that when the anti-loosening nut is rotated under the action of a wrench, the end of the locking rod can retract into the annular groove.
[0007] Furthermore, a spring washer is provided between the anti-loosening nut and the fastening nut.
[0008] Furthermore, the threaded hole of the lock nut has a flared end near the fastening nut.
[0009] Furthermore, the locking rod includes a sleeve, a plug rod, and a compression spring. The end of the sleeve is fixedly connected to the anti-loosening slider. One end of the plug rod is hemispherical, and the other end is slidably inserted into the sleeve. The compression spring is disposed in the sleeve, and its two ends are respectively connected to the sleeve and the plug rod.
[0010] Furthermore, the anti-loosening slider has a cuboid block structure.
[0011] Furthermore, the lead screw is provided with a guide hole in the axial direction, the guide hole is connected to the strip hole, a guide rod is provided in the guide hole, and the guide rod is detachably connected to the anti-loosening slider.
[0012] A microwave transmission device includes a plurality of waveguides, adjacent waveguides being connected by flanges, the flanges being connected by the bolt assembly.
[0013] The beneficial effects of this utility model are: The bolt assembly obtained by the above design of this utility model, when in use, after tightening the fastening nut to the preset position, screw the anti-loosening nut onto the threaded rod and insert the anti-loosening slider into the slotted hole, then tighten the anti-loosening nut so that it is firmly abutting against the fastening nut. At this time, under the stopping action of the anti-loosening slider, the anti-loosening nut cannot rotate away from the bolt head, thereby applying continuous axial pressure to the fastening nut, so that the threads between the fastening nut and the bolt shank always maintain a relatively large friction force; thus preventing the anti-loosening nut from rotating under the action of vibration, thereby achieving the anti-loosening effect. Attached Figure Description
[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 This is a structural schematic diagram of the bolt assembly provided by this utility model; Figure 2 This is an assembly diagram of the bolt rod, anti-loosening slider and locking rod provided by this utility model; Figure 3 This is a schematic diagram of the structure of the anti-loosening nut provided by this utility model; Figure 4 This is a cross-sectional view of the anti-loosening nut provided by this utility model.
[0016] Icons: 1- Bolt assembly; 11- Fastening nut; 12- Bolt shank; 121- Strip hole; 13- Locking nut; 131- Annular groove; 132- Locking through hole; 1321- Large diameter hole; 1322- Small diameter hole; 14- Locking slider; 15- Locking rod; 16- Spring washer. Detailed Implementation Example
[0017] Please refer to Figures 1-3 This embodiment provides a bolt assembly 1, which includes a bolt shank 12, a fastening nut 11, a lock nut 13, and a lock slider 14. The bolt shank 12 and the fastening nut 11 are similar to existing structures and are mainly used to connect two parts to be connected. The lock nut 13 is located on the outside of the fastening nut 11 to prevent the fastening nut 11 from loosening. The lock slider 14 locks the lock nut 13 through locking rods 15 on both sides, thereby preventing the lock nut 13 from rotating and achieving the effect of preventing loosening.
[0018] The aforementioned fastening nut 11 can be a standard component. The bolt rod 12 includes a lead screw and a bolt head at one end of the lead screw. A slotted hole 121 is provided on the lead screw, extending axially and penetrating radially through it. The anti-loosening slider 14 is a cuboid block structure, positioned within the slotted hole 121, and capable of sliding axially along the lead screw. Locking rods 15 are provided on both sides of the anti-loosening slider 14. These locking rods 15 are compressible and extend radially along the lead screw.
[0019] The anti-loosening nut 13 is similar to a standard nut in general, except that it has an annular groove 131 on the inner wall of its threaded hole, which is coaxial with the anti-loosening nut 13. Multiple evenly distributed locking through holes 132 are provided at the bottom of the annular groove 131, extending radially along the anti-loosening nut 13. After the locking rods 15 on both sides of the anti-loosening slider 14 extend into the corresponding locking through holes 132, the anti-loosening nut 13 cannot disengage from the locking rods 15 under vibration, thus preventing it from rotating.
[0020] The locking lever 15 includes a sleeve, a connecting rod, and a compression spring. The end of the sleeve is fixedly connected to the anti-loosening slider 14. One end of the connecting rod is hemispherical, and the other end is slidably inserted into the sleeve. The compression spring is disposed within the sleeve, with both ends connected to the sleeve and the connecting rod respectively, thus making the lever a compressible structure.
[0021] In specific operation, first tighten the fastening nut 11 to the preset position, and then tighten the anti-loosening nut 13 onto the lead screw. Next, insert the anti-loosening slider 14 into the slotted hole 121. Then, insert the end of one of the locking rods 15 into the locking through hole 132. Use an external tool to compress the locking rod 15 and adjust the tilt angle of the locking rod 15 and the anti-loosening slider 14, so that both locking rods 15 extend into their corresponding locking through holes 132. At this point, because the locking rod 15 extends into the corresponding locking through hole 132, it locks the anti-loosening nut 13, preventing it from rotating, thus achieving anti-loosening of the entire bolt assembly 1. When it is necessary to remove the anti-loosening nut 13, use a rod-shaped tool to compress the locking rod 15 through the locking through hole 132, and then adjust the angle of the shortened locking rod 15 to disengage it from the annular groove 131.
[0022] Furthermore, a spring washer 16 is provided between the anti-loosening nut 13 and the fastening nut 11; thus, the precise matching of the locking rod 15 and the locking through hole 132 can be achieved by adjusting the thickness of the spring washer 16. That is, if there is a deviation between the position of the locking rod 15 and the locking through hole 132, the anti-loosening nut 13 can be rotated appropriately. At this time, the abutment force of the anti-loosening nut 13 against the fastening nut 11 will not be affected, and the locking rod 15 can be accurately inserted into the locking through hole 132 to achieve the purpose of locking the anti-loosening nut 13. Example
[0023] This embodiment provides another bolt assembly 1, which differs from embodiment 1 in that, after the locking rod 15 is installed into the anti-loosening through hole, if it is necessary to continue tightening the anti-loosening nut 13, the anti-loosening nut 13 can be turned with a wrench without removing the locking rod 15.
[0024] Specifically, the end of the locking rod 15 is hemispherical, and the locking through hole 132 adopts a stepped hole, which includes a coaxial large-diameter hole 1321 and a small-diameter hole 1322. The large-diameter hole is located inside the lock nut 13; the depth of the large-diameter hole is less than the radius of the end of the locking rod 15, so that only part of the hemispherical end of the locking rod 15 is located in the large-diameter hole; thus, when the lock nut 13 is rotated under the action of a wrench, the end of the locking rod 15 can retract into the annular groove 131. The above design makes it easier to operate by simply turning the lock nut 13 without disassembling the locking rod 15.
[0025] Furthermore, such as Figure 4 The threaded hole of the anti-loosening nut 13 is flared at the end near the fastening nut, and the inner wall of the flared hole does not need to be threaded; that is, the threaded hole is conical at the end near the fastening nut 11, which makes the outer diameter of the threaded hole larger.
[0026] The above design makes the assembly of the locking rod 15 more convenient. When the locking rod 15 needs to be assembled, the anti-loosening slider 14 and the locking rod 15 can be directly inserted into the slot 121. Then, the anti-loosening nut 13 is rotated. When the end of the locking rod 15 touches the inner wall of the flared opening, the anti-loosening nut 13 is rotated further. At this time, the locking rod 15 will automatically shorten under the pressure of the inner wall of the flared opening until the locking rod 15 is inserted into the annular groove 131. It should be noted that the multiple locking through holes 132 are generally arranged symmetrically to facilitate the locking of two symmetrical locking rods 15.
[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A bolt assembly, characterized in that, It includes a bolt rod, a fastening nut, a lock nut, and a lock slider; the fastening nut is threadedly connected to the bolt rod; The bolt rod includes a lead screw and a bolt head disposed at one end of the lead screw. The lead screw has a strip-shaped hole that extends along the axial direction of the lead screw and penetrates the lead screw radially. The anti-loosening slider is disposed in the strip hole and can slide along the axial direction of the lead screw; a locking rod is provided on both sides of the anti-loosening slider, and the locking rod is a compressible structure. The anti-loosening nut is threadedly connected to the lead screw. An annular groove is provided on the inner wall of the threaded hole of the anti-loosening nut. A plurality of evenly distributed locking through holes are provided at the bottom of the annular groove. The locking through holes extend radially along the anti-loosening nut. The end of the locking rod can extend into the corresponding locking through hole and can retract into the annular groove under the action of external force.
2. The bolt assembly according to claim 1, characterized in that: The end of the locking rod is hemispherical, and the locking through hole is a trapezoidal hole, including a large-diameter hole and a small-diameter hole. The large-diameter hole is located inside the anti-loosening nut. The depth of the large-diameter hole is less than the radius of the end of the locking rod, so that when the anti-loosening nut is rotated under the action of a wrench, the end of the locking rod can retract into the annular groove.
3. The bolt assembly according to claim 1 or 2, characterized in that: A spring washer is provided between the anti-loosening nut and the fastening nut.
4. The bolt assembly according to claim 2, characterized in that: The threaded hole of the lock nut has a flared end near the fastening nut.
5. The bolt assembly according to claim 1, characterized in that: The locking rod includes a sleeve, a plug rod, and a compression spring. The end of the sleeve is fixedly connected to the anti-loosening slider. One end of the plug rod is hemispherical, and the other end is slidably inserted into the sleeve. The compression spring is disposed in the sleeve, and its two ends are respectively connected to the sleeve and the plug rod.
6. The bolt assembly according to claim 1, characterized in that: The anti-loosening slider has a rectangular block structure.
7. The bolt assembly according to claim 1, characterized in that: The lead screw has a guide hole in its axial direction, which communicates with the strip hole. A guide rod is installed inside the guide hole, and the guide rod is detachably connected to the anti-loosening slider.
8. A microwave transmission device, characterized in that, The microwave transmission device includes multiple waveguides, adjacent waveguides are connected by flanges, and the flanges are connected by bolt assemblies as described in any one of claims 1-7.