CN211202585U - Anti-loosening bolt - Google Patents
Anti-loosening bolt Download PDFInfo
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- CN211202585U CN211202585U CN201922389156.4U CN201922389156U CN211202585U CN 211202585 U CN211202585 U CN 211202585U CN 201922389156 U CN201922389156 U CN 201922389156U CN 211202585 U CN211202585 U CN 211202585U
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Abstract
The utility model provides a check bolt, including screw rod and spiral shell head, be equipped with the multilateral hole on the spiral shell head, the multilateral hole bottom is equipped with the through-hole that runs through the screw rod setting, the through-hole is close to the one end at multilateral hole bottom and its inner wall is equipped with the internal thread, be equipped with the expansion screw that closes with the internal thread soon in the through-hole, the expansion screw is equipped with the nut towards the one end in multilateral hole, the one end that the expansion screw dorsad multilateral hole is equipped with the expansion vertebra; the outer wall of the screw is provided with a plurality of sliding holes which are arranged along the radial direction of the screw and communicated with the through hole, the sliding holes are uniformly distributed along the circumferential direction of the screw, sliding columns which are in sliding fit with the sliding holes are arranged in the sliding holes, one ends of the sliding columns, facing the center of the through hole, are abutted against the conical surface of the expansion cone, the end parts, facing away from the center of the through hole, of the sliding columns are provided with anti-falling teeth, and the tooth socket of the anti-falling teeth is arranged in the same direction as the axis of the screw. The utility model has the advantages of certain effect of preventing tearing open, locking operation is simple reliable.
Description
Technical Field
The utility model relates to a bolt field, concretely relates to check bolt.
Background
The locking mode of bolt has a lot, generally divide into removable and can not the dismantlement formula, and traditional bolt reaches locking purpose as required, and what generally adopted carries out the restraint of circumference degree of freedom to it, if adopt the steel wire to establish ties locking, can only be applicable to more than two bolts, and need pass every bolt with the steel wire after fixed completion, still need control the taut angle of steel wire, consequently fix comparatively trouble, the suitability is also relatively poor.
SUMMERY OF THE UTILITY MODEL
Based on the problem, the utility model aims to provide a have certain anti-tear effect, the simple reliable check bolt of locking operation mode.
Aiming at the problems, the following technical scheme is provided: a check bolt comprises a screw rod and a screw head arranged at one end of the screw rod, wherein a polygonal hole is formed in the screw head, a through hole penetrating through the screw rod is formed in the hole bottom of the polygonal hole, internal threads are formed in the inner wall of one end, close to the hole bottom of the polygonal hole, of the through hole, an expansion screw screwed with the internal threads is arranged in the through hole, a nut is arranged at one end, facing the polygonal hole, of the expansion screw, and an expansion cone is arranged at one end, opposite to the polygonal hole, of the expansion screw; the outer wall of the screw is provided with at least two sliding holes which are arranged along the radial direction of the screw and communicated with the through hole, the sliding holes are uniformly distributed along the circumferential direction of the screw, a sliding column which is in sliding fit with the sliding holes is arranged in each sliding hole, one end, facing the center of the through hole, of each sliding column is abutted against the conical surface of the expansion cone, the end, facing away from the center of the through hole, of each sliding column is provided with anti-falling teeth, and the tooth socket of each anti-falling tooth is arranged in the same direction as the axis of the screw.
In the structure, the sliding column is arranged on the screw rod, the expansion screw is screwed into the internal thread after the screw rod is screwed into the screw hole, so that the expansion vertebra pushes the sliding column to slide along the radial direction of the screw rod, the anti-falling teeth on the expansion vertebra are enabled to be extruded into the thread teeth of the screw hole to realize occlusion, and the screw rod is prevented from being loosened due to reverse rotation.
The utility model discloses set up as further, the traveller is filled with magnetism towards the one end at through-hole center.
In the structure, the sliding columns can be mutually attracted, and one end of each sliding column, which is provided with the anti-falling teeth, is retracted into the sliding hole.
The utility model discloses further set up to, the slide opening is three, its one end towards the through-hole center of traveller in the slide opening adsorbs each other and makes the anticreep tooth top height be less than the screw rod bottom of a tooth.
In the structure, the three sliding holes are preferably provided with the number, so that the centering can be effectively carried out, the screw thread in the screw hole is prevented from being scratched when the screw rod is screwed in, and the sliding column can be prevented from falling and losing.
The utility model discloses further set up to, be equipped with the V-arrangement groove with the contact of expansion vertebra on its terminal surface of one end at slide column orientation through-hole center, the contained angle is seted up to the V-arrangement groove and is 120 degrees.
In the structure, the expansion cone is conveniently extruded between the adjacent sliding columns to push the sliding columns when the sliding columns are mutually attracted.
The utility model discloses further set up to, V-arrangement groove tank bottom slope is seted up and is contacted with the tangent of expansion vertebra awl wall.
In the structure, when the sliding columns attract and abut against each other, the V-shaped grooves which are obliquely formed can generate a pyramid space at the central axis of the through hole, so that the expansion cone can be squeezed between the adjacent sliding columns when the sliding columns adsorb each other.
The utility model discloses further set up to, the slide opening section is waist shape, the traveller section is waist shape, the waist shape section major diameter and the screw rod axis syntropy of slide opening and traveller.
In the structure, the sliding hole and the sliding column of the waist-shaped section are matched with each other, so that the sliding column can be prevented from rotating, the opening direction of the anti-disengaging teeth is changed, and if the anti-disengaging teeth and the crest helix angle of the screw rod are in the same direction after the sliding column rotates, the situation of insufficient occlusal force is easily caused.
The utility model is further arranged in that the sliding column is made of quenched steel and the surface of the sliding column is provided with a chromium coating.
In the structure, the hardness of the sliding column is higher than that of the screw hole, so that the sliding column can be extruded into the screw thread of the screw hole after being pushed.
The utility model discloses further set up to, its nut is located the polygon downthehole behind the inflation screw in internal thread.
Among the above-mentioned structure, the aesthetic property is good, and overall structure is compact, can avoid appearing the condition emergence of direct bolt dismantlement after the multilateral hole is taken up by the nut.
The utility model discloses further set up to, the expansion bolts direction of screwing and the screw rod direction syntropy of screwing.
In the structure, the screw loosening caused by the fact that the screwing direction of the expansion screw is opposite to the screwing direction of the screw is avoided.
The utility model discloses further set up to, be equipped with the spanner hole on the nut, the spanner hole is interior hexagonal or interior plum blossom.
The structure is suitable for wrenches of various specifications and models.
The utility model discloses further set up as, polygonal hole is interior hexagonal or interior plum blossom.
The structure is suitable for wrenches of various specifications and models.
The utility model has the advantages that: the expansion screw is screwed into the internal thread after the screw is screwed into the screw hole by arranging the sliding column on the screw, so that the expansion vertebra pushes the sliding column to slide towards the radial direction of the screw, and the anti-disengaging teeth on the expansion vertebra are extruded into the thread teeth of the screw hole to realize occlusion, thereby preventing the screw from generating reverse rotation to cause looseness.
Drawings
Fig. 1 is a schematic diagram of the explosion structure of the present invention.
Fig. 2 is a schematic view of the overall structure of the expansion screw in the tightened state of the present invention.
Fig. 3 is a schematic view of the fully-sectioned structure of the expansion screw in the non-tightened state of the present invention.
Fig. 4 is a schematic view of the fully-sectioned structure of the expansion screw in the tightening state of the expansion screw.
Fig. 5 is a schematic view of the slide column structure of the present invention.
The reference numbers in the figures mean: 10-a screw; 11-screw head; 12-polygonal holes; 13-a through hole; 131-internal threads; 14-a slide hole; 20-expansion screw; 21-a screw cap; 211-spanner holes; 22-dilated vertebrae; 30-a traveler; 31-anti-falling teeth; 32-V-shaped grooves.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 to 5, the anti-loose bolt shown in fig. 1 to 5 includes a threaded rod 10 and a threaded head 11 disposed at one end of the threaded rod 10, the threaded head 11 is provided with a polygonal hole 12, the bottom of the polygonal hole 12 is provided with a through hole 13 disposed through the threaded rod 10, one end of the through hole 13 near the bottom of the polygonal hole 12 is provided with an internal thread 131 on its inner wall, an expansion screw 20 screwed with the internal thread 131 is disposed in the through hole 13, one end of the expansion screw 20 facing the polygonal hole 12 is provided with a nut 21, and one end of the expansion screw 20 facing away from the polygonal hole 12 is provided with an expansion cone 22; the outer wall of the screw 10 is provided with at least two sliding holes 14 which are arranged along the radial direction of the screw and are communicated with the through hole 13, the sliding holes 14 are uniformly distributed along the circumferential direction of the screw 10, a sliding column 30 which is in sliding fit with the sliding holes 14 is arranged in the sliding holes 14, one end, facing the center of the through hole 13, of the sliding column 30 is abutted against the conical surface of the expansion cone 22, the end part, facing away from the center of the through hole 13, of the sliding column 30 is provided with anti-falling teeth 31, and the tooth grooves of the anti-falling teeth 31 are arranged in the same direction as the axis of the screw 10.
In the above structure, the sliding column 30 is arranged on the screw rod 10, after the screw rod 10 is screwed into the screw hole, the expansion screw 20 is screwed into the internal thread 131, so that the expansion vertebra 22 pushes the sliding column 30 to slide in the radial direction of the screw rod 10, and the anti-falling teeth 31 on the expansion vertebra 22 are pushed into the thread teeth of the screw hole to realize occlusion, thereby preventing the screw rod 10 from loosening due to reverse rotation.
In this embodiment, the end of the slide column 30 facing the center of the through hole 13 is magnetized.
In the above configuration, the ends of the spools 30 facing the central axis of the screw 10 are attracted to each other, and the end of the spool 30 provided with the escape prevention tooth 31 is retracted into the slide hole 14.
In this embodiment, there are three sliding holes 14, and one ends of the sliding columns 30 in the sliding holes 14 facing the center of the through hole 13 are mutually adsorbed to make the height of the tooth crest of the anti-disengaging tooth 31 lower than the tooth bottom of the screw 10.
In the above structure, the number of the three sliding holes 14 is preferably selected, so that the centering can be effectively performed, the thread in the screw hole is prevented from being scratched when the screw 10 is screwed in, and the sliding column 30 can be prevented from falling and losing.
In this embodiment, a V-shaped groove 32 contacting with the expansion cone 22 is disposed on an end surface of one end of the slide column 30 facing the center of the through hole 13, and an included angle of the V-shaped groove 32 is 120 degrees.
In the above structure, the expansion cone 22 is squeezed between the adjacent sliding columns 30 to push the sliding columns 30 when the sliding columns 30 are attracted.
In this embodiment, the bottom of the V-shaped groove 32 is inclined and contacts the tapered wall of the expansion cone 22 tangentially.
In the above structure, when the sliding columns 30 are attracted and abutted, the inclined V-shaped groove 32 generates a pyramid space at the central axis of the through hole 13, which is beneficial to the expansion cone 22 to be squeezed between the adjacent sliding columns 30 when the sliding columns 30 are attracted to each other.
In this embodiment, the cross section of the sliding hole 14 is kidney-shaped, the cross section of the sliding column 30 is kidney-shaped, and the length and diameter of the kidney-shaped cross section of the sliding hole 14 and the sliding column 30 are in the same direction as the axis of the screw 10.
In the above structure, the sliding hole 14 and the sliding column 30 with the kidney-shaped cross section are matched with each other, so that the sliding column 30 can be prevented from rotating, and the opening direction of the anti-slip tooth 31 is prevented from being changed, for example, after the sliding column 30 rotates, the anti-slip tooth 31 is in the same direction as the crest helix angle of the screw 10, which easily causes the situation of insufficient occlusal force (in the figure, only the sliding hole 14 and the sliding column 30 with the circular cross section are shown, and the sliding hole 14 and the sliding column 30 with the kidney-shaped cross section are not shown).
In this embodiment, the sliding column 30 is hardened steel, and a chromium coating (not shown) is provided on the surface thereof.
In the above structure, the hardness of the sliding column 30 is higher than that of the screw hole, so that the sliding column 30 can be pushed and then squeezed into the screw thread of the screw hole.
In this embodiment, the nut 21 of the expansion screw 20 is located in the polygonal hole 12 after the expansion screw is screwed into the internal thread 131.
In the structure, the appearance is good, the whole structure is compact, and the situation that the bolt is directly disassembled can be avoided after the polygonal hole 12 is occupied by the screw cap 21.
In this embodiment, the tightening direction of the expansion screw 20 is the same as the tightening direction of the screw 10.
In the above structure, the expansion screw 20 is prevented from being screwed in the direction opposite to the screwing direction of the screw 10 to loosen the screw 10.
In this embodiment, the nut 21 is provided with a wrench hole 211, and the wrench hole 211 is an inner hexagon or an inner plum blossom.
The structure is suitable for wrenches of various specifications and models.
In this embodiment, the polygonal hole 12 is an inner hexagon or an inner plum blossom.
The structure is suitable for wrenches of various specifications and models.
The utility model has the advantages that: by arranging the sliding column 30 on the screw rod 10, after the screw rod 10 is screwed into the screw hole, the expansion screw 20 is screwed into the internal thread 131, so that the expansion cone 22 pushes the sliding column 30 to slide towards the radial direction of the screw rod 10, and the anti-falling teeth 31 on the expansion cone 22 are extruded into the thread teeth of the screw hole to realize occlusion, thereby preventing the screw rod 10 from reversely rotating to cause looseness.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a check bolt, includes the screw rod and sets up in the spiral shell head of screw rod one end, be equipped with polygonal hole on the spiral shell head, its characterized in that: the bottom of the polygonal hole is provided with a through hole penetrating through the screw rod, the inner wall of one end of the through hole, close to the bottom of the polygonal hole, is provided with an internal thread, an expansion screw screwed with the internal thread is arranged in the through hole, one end of the expansion screw, facing the polygonal hole, is provided with a nut, and one end of the expansion screw, facing away from the polygonal hole, is provided with an expansion cone; the outer wall of the screw is provided with at least two sliding holes which are arranged along the radial direction of the screw and communicated with the through hole, the sliding holes are uniformly distributed along the circumferential direction of the screw, a sliding column which is in sliding fit with the sliding holes is arranged in each sliding hole, one end, facing the center of the through hole, of each sliding column is abutted against the conical surface of the expansion cone, the end, facing away from the center of the through hole, of each sliding column is provided with anti-falling teeth, and the tooth socket of each anti-falling tooth is arranged in the same direction as the axis of the screw.
2. A check bolt as defined in claim 1, wherein: and one end of the sliding column facing to the center of the through hole is filled with magnetism.
3. A check bolt as defined in claim 2, wherein: the sliding holes are three, and the ends of the sliding columns in the sliding holes, which face the center of the through hole, are mutually adsorbed, so that the height of the top of the anti-falling tooth is lower than that of the bottom of the screw rod.
4. A check bolt as defined in claim 1, wherein: and a V-shaped groove which is contacted with the expansion vertebra is arranged on the end surface of one end of the sliding column, which faces the center of the through hole.
5. A check bolt according to claim 4, wherein: the bottom of the V-shaped groove is obliquely arranged and is in tangential contact with the conical wall of the expansion cone.
6. A check bolt as defined in claim 1, wherein: the cross section of the sliding hole is waist-shaped, the cross section of the sliding column is waist-shaped, and the long diameters of the waist-shaped cross sections of the sliding hole and the sliding column are in the same direction with the axis of the screw.
7. A check bolt as defined in claim 1, wherein: the sliding column is made of quenched steel, and a chromium coating is arranged on the surface of the sliding column.
8. A check bolt as defined in claim 1, wherein: and the nut of the expansion screw is positioned in the polygonal hole after the expansion screw is screwed into the internal thread.
9. A check bolt as defined in claim 1, wherein: the screwing direction of the expansion screw is the same as the screwing direction of the screw rod.
10. A check bolt as defined in claim 1, wherein: the nut is provided with a wrench hole which is an inner hexagon or an inner plum blossom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922389156.4U CN211202585U (en) | 2019-12-26 | 2019-12-26 | Anti-loosening bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922389156.4U CN211202585U (en) | 2019-12-26 | 2019-12-26 | Anti-loosening bolt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202585U true CN211202585U (en) | 2020-08-07 |
Family
ID=71863458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922389156.4U Active CN211202585U (en) | 2019-12-26 | 2019-12-26 | Anti-loosening bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202585U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446299A (en) * | 2021-07-18 | 2021-09-28 | 王立志 | High-strength anti-skid bolt |
-
2019
- 2019-12-26 CN CN201922389156.4U patent/CN211202585U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113446299A (en) * | 2021-07-18 | 2021-09-28 | 王立志 | High-strength anti-skid bolt |
| CN113446299B (en) * | 2021-07-18 | 2023-11-14 | 温州市圣特标准件有限公司 | High-strength anti-skid bolt |
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