CN111720412A - Special-shaped bolt and nut assembly - Google Patents
Special-shaped bolt and nut assembly Download PDFInfo
- Publication number
- CN111720412A CN111720412A CN202010472293.9A CN202010472293A CN111720412A CN 111720412 A CN111720412 A CN 111720412A CN 202010472293 A CN202010472293 A CN 202010472293A CN 111720412 A CN111720412 A CN 111720412A
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- China
- Prior art keywords
- special
- shaped
- screw rod
- nut
- bolt
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 12
- 229920003023 plastic Polymers 0.000 claims description 12
- 239000004033 plastic Substances 0.000 claims description 12
- 239000007769 metal material Substances 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000013016 damping Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a special-shaped bolt and nut assembly which comprises two symmetrically-arranged special-shaped bolts, wherein each special-shaped bolt is provided with a first screw rod, a second screw rod and a third screw rod, the thread directions of the first screw rod and the second screw rod are opposite, special-shaped nuts are respectively in threaded connection with the first screw rod and the second screw rod, the outer circumference of the left half section of each special-shaped nut is of a gear structure, the outer circumference of the right half section of each special-shaped nut is of a hexagonal prism structure, the gear structure of the special-shaped nuts on the first screw rods is mutually meshed with the gear structure of the special-shaped nuts on the second screw rods, and blind holes for external parts to be inserted are formed in the end faces of the hexagonal prism structure; the third screw rods of the two special-shaped bolts are oppositely arranged and are in threaded connection through threaded sleeves; the invention comprises two symmetrically connected special-shaped bolts, and each special-shaped bolt is provided with two special-shaped nuts, thereby having multiple adjusting functions and meeting the special requirements of special fields on the bolts and the nuts.
Description
Technical Field
The invention relates to a special-shaped bolt and nut assembly, and belongs to the technical field of bolts and nuts.
Background
The bolt is a mechanical part, is a cylindrical threaded fastener with a nut, and is a fastener consisting of a head part and a screw rod, wherein the screw rod is a cylinder with external threads and needs to be matched with the nut for tightly connecting two parts with through holes; at present, the traditional bolt and nut are of a single structure, have a single structure and a single function, and have various special requirements in some special fields, such as nuclear facilities, aerospace and the like, when the bolt and nut are adopted, the traditional bolt and nut cannot meet the special requirements of the bolt and nut, the special requirements cause that the bolt and nut completely exceed the structure and the matching connection form of the bolt and nut used in the common field, and the bolt and nut are redesigned and manufactured according to the special requirements so as to meet the special requirements of the special fields on the bolt and nut; the technical scheme of the invention is designed because a special connection requirement is met, a bolt and a nut are required to have multiple adjusting functions and can be connected and matched with an external part.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a special-shaped bolt and nut assembly which comprises two symmetrically-connected special-shaped bolts, wherein each special-shaped bolt is provided with three screw rods, and each special-shaped bolt is provided with two special-shaped nuts; the special-shaped bolt and nut assembly has multiple adjusting functions, can be connected and matched with an external part, and meets the special requirements of special fields on bolts and nuts.
The technical scheme adopted by the invention is as follows:
a special-shaped bolt and nut assembly comprises two symmetrically-arranged special-shaped bolts, wherein each special-shaped bolt is provided with a first screw rod, a second screw rod and a third screw rod, the first screw rod and the second screw rod of each special-shaped bolt extend towards one side of the bolt, the third screw rod of each special-shaped bolt extends towards the other side of the bolt, the axes of the first screw rod, the second screw rod and the third screw rod are parallel to each other, the axis of the third screw rod is positioned between the axes of the first screw rod and the second screw rod, the thread directions of the first screw rod and the second screw rod are opposite, special-shaped nuts are respectively in threaded connection with the first screw rod and the second screw rod, the outer circumference of the left half section of each special-shaped nut is of a gear structure, the outer circumference of the right half section of each special-shaped nut is of a hexagonal prism structure, the gear structure of each special-shaped nut on the first screw rod and the gear structure of each special-shaped nut on the, a blind hole for inserting an external part is formed on the end face of the hexagonal prism structure end of the special-shaped nut; the third screw rods of the two special-shaped bolts are oppositely arranged and are in threaded connection through the threaded sleeves.
As a further preferred aspect of the present invention, the thread directions of the third screws of the two special-shaped bolts are opposite, and the threaded sleeves are respectively in threaded connection with the two third screws; the outer circumferential surface of the threaded sleeve is of a hexagonal prism structure; the inside at screw sleeve both ends is formed with respectively with two third screw rod complex screw threads, when realizing through forward or reverse rotation screw sleeve, can adjust the interval between two third screw rods.
As a further preferable aspect of the present invention, a spring is provided inside the threaded sleeve between the ends of the two third screws, and the spring is compressed by the ends of the two third screws; the compressed spring generates elastic force which acts on the end parts of the two third screw rods, so that the threaded sleeve has a certain damping effect when rotating, and the threaded sleeve cannot freely rotate when not rotating; the spring here corresponds to a spring washer for a conventional bolt and nut for increasing the friction between the threaded sleeve and the third threaded rod.
As a further preferred aspect of the present invention, an end of the third screw is of a spherical structure; facilitating sliding contact with and compression of the spring.
As a further preferable mode of the invention, the special-shaped nut comprises a plastic material and a metal material, wherein the gear structure on the special-shaped nut is a gear ring made of the metal material, and then the plastic material is injected on the gear ring to form the special-shaped nut; the outer part is inserted into the structural position made of the plastic material of the special-shaped nut, so that the special-shaped nut serves as an insulator between the outer part and the special-shaped bolt, and special requirements of customers are met.
As a further preferred aspect of the present invention, a plurality of keys are disposed on the inner circumferential surface of the gear ring, the plurality of keys extend along the length direction of the gear ring, and the plurality of keys are uniformly arranged circumferentially; the cross-sectional shape of the bond is a T-shaped structure; the key can increase the firmness of the gear ring made of metal material when being combined with the plastic material, and prevent the gear ring from rotating; the length of the key is less than the length of the gear ring; the key is completely immersed in the plastic material during injection molding, so that axial displacement of the gear ring can be prevented.
As a further preferable mode of the invention, two blind holes for inserting external parts are formed on the end face of the special-shaped nut hexagonal prism structure end, and the depth of the blind holes is smaller than the length of the special-shaped nut hexagonal prism structure; the cross section of the blind hole is square; when the external part is inserted into the blind hole, the external part is connected with the blind hole in an interference fit manner, and the external part and the special-shaped nut cannot move.
The invention has the beneficial effects that: the special-shaped bolt comprises two symmetrically-connected special-shaped bolts, each special-shaped bolt is provided with three screw rods, and each special-shaped bolt is provided with two special-shaped nuts; the special-shaped bolt and nut assembly has multiple adjusting functions, can be connected and matched with an external part, and meets the special requirements of special fields on bolts and nuts.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the special-shaped bolt of the present invention;
FIG. 3 is a schematic structural view of two special-shaped nuts according to the present invention;
FIG. 4 is a schematic end view of the gear structure of two profile nuts of the present invention;
FIG. 5 is a schematic end view of a hexagonal prism structure of two profile nuts according to the present invention;
FIG. 6 is a schematic structural view of a joint of two special-shaped bolts according to the present invention;
the main reference numerals in the figures have the following meanings:
1-special-shaped bolt, 11-first screw rod, 12-second screw rod, 13-third screw rod, 14-spherical structure, 2-special-shaped nut, 21-gear structure, 22-hexagonal prism structure, 23-blind hole, 24-key, 3-threaded sleeve, 4-spring and 5-external part.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in fig. 1-6: the embodiment is a special-shaped bolt and nut assembly, which comprises two special-shaped bolts 1 which are symmetrically arranged, wherein each special-shaped bolt 1 is provided with a first screw rod 11, a second screw rod 12 and a third screw rod 13, the first screw rod 11 and the second screw rod 12 of each special-shaped bolt 1 extend towards one side, the third screw rod 13 of each special-shaped bolt 1 extends towards the other side, the axes of the first screw rod 11, the second screw rod 12 and the third screw rod 13 are parallel to each other, the axis of the third screw rod 13 is positioned between the axes of the first screw rod 11 and the second screw rod 12, the thread directions of the first screw rod 11 and the second screw rod 12 are opposite, special-shaped nuts 2 are respectively connected to the first screw rod 11 and the second screw rod 12 in a threaded manner, the outer circumferential surface of the left half section of each special-shaped nut 2 is a gear structure 21, the outer circumferential surface of the right half section of each special-shaped nut 2 is a hexagonal prism structure 22, the gear structure 21 of the special-shaped nut 2 on, the end face of the hexagonal prism structure 22 of the special-shaped nut 2 faces to the side far away from the special-shaped bolt 1, and a blind hole 23 for inserting the external component 5 is formed in the end face of the hexagonal prism structure 22 of the special-shaped nut 2; the third screws 13 of the two special-shaped bolts 1 are oppositely arranged, and the third screws 13 of the two special-shaped bolts 1 are in threaded connection through the threaded sleeves 3.
In the embodiment, the thread directions of the third screws 13 of the two special-shaped bolts 1 are opposite, and the thread sleeves 3 are respectively in threaded connection with the two third screws 13; the outer circumferential surface of the threaded sleeve 3 is of a hexagonal prism structure; threads matched with the two third screw rods 13 are formed in the inner parts of the two ends of the threaded sleeve 3 respectively; it is achieved that the distance between the two third screws 13 can be adjusted by turning the threaded sleeve 3 in forward or reverse direction.
In the embodiment, the spring 4 is arranged inside the threaded sleeve 3 and between the ends of the two third screws 13, and the spring 4 is compressed by the ends of the two third screws 13; the compressed spring 4 generates elastic force which acts on the end parts of the two third screw rods 13, so that the threaded sleeve 3 has a certain damping effect when rotating, and the threaded sleeve 3 cannot freely rotate when the threaded sleeve 3 is not rotated; the spring 4 here corresponds to a spring washer for a conventional bolt and nut for increasing the friction between the threaded sleeve 3 and the third screw 13.
In this embodiment, the end of the third screw 13 is a spherical structure 14; facilitating sliding contact with the spring 4 and pressing the spring 4.
In the embodiment, the special-shaped nut 2 comprises a plastic material and a metal material, wherein the gear structure 21 on the special-shaped nut 2 is a gear ring made of the metal material, and then the plastic material is injected on the gear ring to form the special-shaped nut 2; the outer part 5 is inserted in the structural position of the profiled nut 2 made of plastic material, so that the profiled nut 2 acts as an insulator between the outer part 5 and the profiled bolt 1, thereby meeting the special requirements of customers.
In the embodiment, three keys 24 are arranged on the inner circumferential surface of the gear ring, the three keys 24 extend along the length direction of the gear ring, and the three keys 24 are uniformly and circumferentially arranged; the cross-sectional shape of the key 24 is a T-shaped structure; the key 24 can increase the firmness of the gear ring made of metal material when being combined with plastic material, and prevent the gear ring from rotating; the length of the key 24 is less than the length of the gear ring; the key 24 is completely immersed in the plastic material during injection molding, so that the gear ring can be prevented from axial displacement; in practical applications, more keys 24 may be provided.
In the embodiment, two blind holes 23 for inserting the external part 5 are formed on the end surface of the hexagonal prism structure 22 end of the special-shaped nut 2, and the depth of the blind holes 23 is smaller than the length of the hexagonal prism structure 22 of the special-shaped nut 2; the cross section of the blind hole 23 is square; when the external component 5 is inserted into the blind hole 23, the external component 5 is connected with the blind hole 23 in an interference fit mode, and the external component 5 and the special-shaped nut 2 cannot move.
The special-shaped bolt and nut assembly comprises two symmetrically-connected special-shaped bolts 1, each special-shaped bolt 1 is provided with three screw rods, and each special-shaped bolt 1 is provided with two special-shaped nuts 2; because the thread directions of the two third screws 13 are opposite, and the thread inside the threaded sleeve 3 is also provided with threads matched with the two third screws, when the threaded sleeve 3 is rotated to different directions, the two third screws 13 move close to each other or move away from each other; the space between the two third screw rods 13 can be adjusted when the threaded sleeve 3 is rotated forwards or reversely; the first screw 11 and the second screw 12 of each special-shaped bolt 1 are respectively in threaded connection with a special-shaped nut 2, the outer circumferential surface of the left half section of the special-shaped nut 2 is a gear structure 21, the outer circumferential surface of the right half section of the special-shaped nut 2 is a hexagonal prism structure 22, the gear structure 21 of the special-shaped nut 2 on the first screw 11 is meshed with the gear structure 21 of the special-shaped nut 2 on the second screw 12, so that by rotating one of the special-shaped nuts 2, the other special-shaped nut 2 meshed with the special-shaped nut 2 can rotate along with the gear structure, and the two special-shaped nuts 2 can synchronously displace on the first screw 11 and the second screw 12 in the rotating process; two blind holes 23 for inserting the external part 5 are formed on the end surface of the hexagonal prism structure 22 end of the special-shaped nut 2, when the external part 5 is inserted into the blind holes 23, the external part 5 is connected with the blind holes 23 in an interference fit manner, and the external part 5 and the special-shaped nut 2 cannot move; when the two special-shaped nuts 2 on the special-shaped bolt 1 rotate, the angle change and the expansion amount of the two external parts 5 can be adjusted, the synchronization is kept, and the special requirements of special fields on the bolt and the nut are met.
The invention comprises two symmetrically connected special-shaped bolts, each special-shaped bolt is provided with three screw rods, and each special-shaped bolt is provided with two special-shaped nuts; the special-shaped bolt and nut assembly has multiple adjusting functions, can be connected and matched with an external part, and meets the special requirements of special fields on bolts and nuts.
The above description is only a preferred embodiment of the present patent, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the inventive concept, and these modifications and decorations should also be regarded as the protection scope of the present patent.
Claims (10)
1. The utility model provides a heterotypic bolt and nut subassembly which characterized in that: the special-shaped bolt comprises two special-shaped bolts which are symmetrically arranged, each special-shaped bolt is provided with a first screw rod, a second screw rod and a third screw rod, the first screw rod and the second screw rod of each special-shaped bolt extend towards one side of the bolt, the third screw rod of each special-shaped bolt extends towards the other side of the bolt, the axes of the first screw rod, the second screw rod and the third screw rod are parallel to each other, the axis of the third screw rod is positioned between the axes of the first screw rod and the second screw rod, the thread directions of the first screw rod and the second screw rod are opposite, special-shaped nuts are respectively in threaded connection with the first screw rod and the second screw rod, the outer circumferential surface of the left half section of each special-shaped nut is of a gear structure, the outer circumferential surface of the right half section of each special-shaped nut is of a hexagonal prism structure, the gear structure of the special-shaped nut on the first screw rod is meshed with the gear structure, a blind hole for inserting an external part is formed on the end face of the hexagonal prism structure end of the special-shaped nut; the third screw rods of the two special-shaped bolts are oppositely arranged and are in threaded connection through the threaded sleeves.
2. A profiled bolt and nut assembly as claimed in claim 1 wherein the thread direction of the third screws of the two profiled bolts is opposite, the threaded sleeves being in threaded connection with the two third screws respectively; and the outer circumference of the threaded sleeve is of a hexagonal prism structure.
3. A profiled bolt and nut assembly as claimed in claim 2 wherein a spring is provided within the threaded sleeve between the ends of the two third screws and is compressed by the ends of the two third screws.
4. A profiled bolt and nut assembly as claimed in claim 3 wherein the end of the third screw is of spherical configuration.
5. The profiled bolt and nut assembly defined in claim 1 wherein the profiled nut comprises a plastics material and a metal material, wherein the gear formation on the profiled nut is a gear ring made of a metal material, and then the plastics material is injection moulded onto the gear ring to form the profiled nut.
6. The profiled bolt and nut assembly defined in claim 5 wherein the gear ring has a plurality of keys disposed on its inner circumferential surface, the plurality of keys extending along the length of the gear ring and the plurality of keys being arranged circumferentially and uniformly.
7. A profiled bolt and nut assembly as claimed in claim 6 wherein the cross-sectional shape of the key is a T-shaped configuration.
8. A profiled bolt and nut assembly as claimed in claim 6 or claim 7 wherein the length of the key is less than the length of the gear ring.
9. The special-shaped bolt and nut assembly as claimed in claim 1 or 5, wherein two blind holes for inserting external parts are formed on the end face of the special-shaped nut hexagonal prism structure end, and the depth of the blind holes is smaller than the length of the special-shaped nut hexagonal prism structure.
10. A profiled bolt and nut assembly as claimed in claim 9 wherein the cross-sectional shape of the blind bore is square.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010472293.9A CN111720412B (en) | 2020-05-29 | 2020-05-29 | Special-shaped bolt and nut assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010472293.9A CN111720412B (en) | 2020-05-29 | 2020-05-29 | Special-shaped bolt and nut assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111720412A true CN111720412A (en) | 2020-09-29 |
| CN111720412B CN111720412B (en) | 2021-09-10 |
Family
ID=72565324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010472293.9A Active CN111720412B (en) | 2020-05-29 | 2020-05-29 | Special-shaped bolt and nut assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111720412B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7502046A (en) * | 1975-04-04 | 1976-10-05 | P Malmgren | METHOD FOR MANUFACTURING A COMMERCIAL IRON BARS DEVICE FOR SUSPENSION |
| CH665457A5 (en) * | 1984-05-17 | 1988-05-13 | Stadtmann Holzbau Fa | Chain connections for swing seat - are two loops provided at each end with stems through seat and secured by pairs of nuts |
| US5156508A (en) * | 1989-12-27 | 1992-10-20 | Grisley Kenneth M | Cam action clamp |
| US6881005B2 (en) * | 2001-11-09 | 2005-04-19 | Saul Siney Sosa | Frame connection mechanism |
| CN2713195Y (en) * | 2004-07-21 | 2005-07-27 | 李铁伦 | Arbitrary angle connector |
| CN101126406A (en) * | 2007-07-02 | 2008-02-20 | 礼恩派(嘉兴)有限公司 | Universal rotation hinge |
| CN102454679A (en) * | 2010-10-20 | 2012-05-16 | 陕西汉德车桥有限公司 | Locking structure and locking sheet of adjusting nut |
| CN102990607A (en) * | 2012-12-06 | 2013-03-27 | 苏州工业园区职业技术学院 | Safe removing and installing tool for elastic collars for shafts |
| CN105179425A (en) * | 2015-10-28 | 2015-12-23 | 苏州道众机械制造有限公司 | U-shaped double-head bolt |
| CN106122234A (en) * | 2016-06-17 | 2016-11-16 | 浙江吉利罗佑发动机有限公司 | A kind of locking measure of studs and installation method |
| CN206268218U (en) * | 2016-12-09 | 2017-06-20 | 广州灏佳家居空间装饰材料有限公司 | A kind of double-headed spike |
| CN206338299U (en) * | 2016-12-22 | 2017-07-18 | 广东东箭汽车用品制造有限公司 | A kind of heterotypic bolt |
| CN107869508A (en) * | 2017-10-31 | 2018-04-03 | 平湖市万顺达机械有限公司 | A kind of compound bolt arrangement |
| CN208885736U (en) * | 2018-08-07 | 2019-05-21 | 无锡市务达五金制品有限公司 | U-bolt with structure extension function |
| CN210423353U (en) * | 2019-05-29 | 2020-04-28 | 衡水益通管业股份有限公司 | Bolt capable of being installed and constructed from one side of steel plate |
-
2020
- 2020-05-29 CN CN202010472293.9A patent/CN111720412B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR7502046A (en) * | 1975-04-04 | 1976-10-05 | P Malmgren | METHOD FOR MANUFACTURING A COMMERCIAL IRON BARS DEVICE FOR SUSPENSION |
| CH665457A5 (en) * | 1984-05-17 | 1988-05-13 | Stadtmann Holzbau Fa | Chain connections for swing seat - are two loops provided at each end with stems through seat and secured by pairs of nuts |
| US5156508A (en) * | 1989-12-27 | 1992-10-20 | Grisley Kenneth M | Cam action clamp |
| US6881005B2 (en) * | 2001-11-09 | 2005-04-19 | Saul Siney Sosa | Frame connection mechanism |
| CN2713195Y (en) * | 2004-07-21 | 2005-07-27 | 李铁伦 | Arbitrary angle connector |
| CN101126406A (en) * | 2007-07-02 | 2008-02-20 | 礼恩派(嘉兴)有限公司 | Universal rotation hinge |
| CN102454679A (en) * | 2010-10-20 | 2012-05-16 | 陕西汉德车桥有限公司 | Locking structure and locking sheet of adjusting nut |
| CN102990607A (en) * | 2012-12-06 | 2013-03-27 | 苏州工业园区职业技术学院 | Safe removing and installing tool for elastic collars for shafts |
| CN105179425A (en) * | 2015-10-28 | 2015-12-23 | 苏州道众机械制造有限公司 | U-shaped double-head bolt |
| CN106122234A (en) * | 2016-06-17 | 2016-11-16 | 浙江吉利罗佑发动机有限公司 | A kind of locking measure of studs and installation method |
| CN206268218U (en) * | 2016-12-09 | 2017-06-20 | 广州灏佳家居空间装饰材料有限公司 | A kind of double-headed spike |
| CN206338299U (en) * | 2016-12-22 | 2017-07-18 | 广东东箭汽车用品制造有限公司 | A kind of heterotypic bolt |
| CN107869508A (en) * | 2017-10-31 | 2018-04-03 | 平湖市万顺达机械有限公司 | A kind of compound bolt arrangement |
| CN208885736U (en) * | 2018-08-07 | 2019-05-21 | 无锡市务达五金制品有限公司 | U-bolt with structure extension function |
| CN210423353U (en) * | 2019-05-29 | 2020-04-28 | 衡水益通管业股份有限公司 | Bolt capable of being installed and constructed from one side of steel plate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111720412B (en) | 2021-09-10 |
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