CN107605913B - Adjustable anti-drop bolt - Google Patents
Adjustable anti-drop bolt Download PDFInfo
- Publication number
- CN107605913B CN107605913B CN201711038991.2A CN201711038991A CN107605913B CN 107605913 B CN107605913 B CN 107605913B CN 201711038991 A CN201711038991 A CN 201711038991A CN 107605913 B CN107605913 B CN 107605913B
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- screw
- screw rod
- bolt
- sleeve
- bolt body
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- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Mutual Connection Of Rods And Tubes (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention discloses an adjustable anti-drop bolt, comprising: the bolt body is provided with a slot extending linearly from one end face to the other end face; the groove is communicated in the radial direction of the bolt body, structures which are arranged at intervals along the communication direction of the groove are arranged in the groove, one ends of the two structures are movably connected with the inner wall of the groove respectively, and an adjusting mechanism is arranged between the two structures; the adjusting mechanism comprises a first screw rod, a second screw rod and a screw sleeve, the screw threads of the first screw rod and the screw threads of the second screw rod are opposite in rotation direction, the first screw rod and the second screw rod are positioned at two ends of the screw sleeve, one ends of the first screw rod and the second screw rod, which are close to the screw sleeve, extend into the screw sleeve and are in threaded connection with the screw sleeve, and one ends of the first screw rod and the second screw rod, which are far away from the screw sleeve, are respectively connected with the two structural bodies. The nut cannot automatically fall off after being mounted, so that the safety of bolt connection is improved.
Description
Technical Field
The invention relates to the technical field of nut and screw rod production and manufacturing, in particular to an adjustable anti-drop bolt.
Background
At present, the fastening of the component connection or the equipment and the part is usually completed by bolts. Because the bolt is often used in a jolt and swaying environment, and the nut can be loosened and fall off in the jolt and swaying process, certain potential safety hazards exist, and improvement is needed.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an adjustable anti-falling bolt.
The invention provides an adjustable anti-drop bolt, comprising: the bolt body is provided with a slot extending linearly from one end face to the other end face; the groove is communicated in the radial direction of the bolt body, structures which are arranged at intervals along the communication direction of the groove are arranged in the groove, one ends of the two structures are movably connected with the inner wall of the groove respectively, and an adjusting mechanism is arranged between the two structures; the adjusting mechanism comprises a first screw rod, a second screw rod and a screw sleeve, the screw threads of the first screw rod and the screw threads of the second screw rod are opposite in rotation direction, the first screw rod and the second screw rod are positioned at two ends of the screw sleeve, one ends of the first screw rod and the second screw rod, which are close to the screw sleeve, extend into the screw sleeve and are in threaded connection with the screw sleeve, and one ends of the first screw rod and the second screw rod, which are far away from the screw sleeve, are respectively connected with the two structural bodies.
Preferably, the first screw and/or the second screw are/is provided with a limiting part, and when the threaded sleeve is abutted against the limiting part, the structural body is positioned in the cutting groove.
Preferably, the structure is a bar arranged along the extending direction of the slit, and is made of spring steel.
Preferably, the side surfaces of the two structural bodies, which are far away from each other, are cambered surfaces which are coaxially arranged with the bolt body.
Preferably, a plurality of first screw thread parts are arranged on the cambered surface of the structural body at equal intervals along the height direction of the bolt body, a plurality of second screw thread parts are arranged on the outer surface of the bolt body at equal intervals along the height direction of the bolt body, and when the cambered surface of the structural body and the outer surface of the bolt are in the same ring surface, each first screw thread part on the structural body is in butt joint with each second screw thread part on the bolt body in a one-to-one correspondence manner so as to form screw threads which spiral and spiral around the axis of the bolt body.
Preferably, a limiting part is arranged on the first screw rod and/or the second screw rod, and when the threaded sleeve is abutted against the limiting part, the first threaded part is abutted with the second threaded part.
Preferably, the side surfaces of one side, close to each other, of the two structural bodies are respectively provided with a sliding groove, and one ends, far away from the screw sleeve, of the first screw rod and the second screw rod are respectively connected with the sliding grooves on the two structural bodies in a sliding manner.
Preferably, the structure is rotatably connected to the side wall of the slot so that the structure can swing back and forth in the radial direction of the bolt body.
Preferably, the outer surface of the screw sleeve is provided with anti-skid threads.
According to the invention, the grooving is arranged on the bolt body, two structures which are arranged at intervals along the penetrating direction of the grooving are arranged in the grooving, the adjusting mechanism is arranged between the two structures, one ends of the two structures are respectively movably connected with the inner wall of the grooving, the adjusting mechanism comprises a first screw rod, a second screw rod and a screw sleeve, the threads of the first screw rod and the second screw rod are opposite in rotation direction, the first screw rod and the second screw rod respectively extend into the screw sleeve from two ends of the screw sleeve and are in threaded connection with the screw sleeve, one ends of the first screw rod and the second screw rod, which are far away from the screw sleeve, are respectively connected with the two structures, so that the free ends of the structures can be pushed to swing along the radial direction of the bolt body when the screw sleeve is rotated, the screw sleeve is rotated to enable the two structures to be grooved, then the screw cap is screwed into the direction from the starting end of the grooving to the end of the screw cap, and after the screw cap is fixed, the screw cap is rotated again to push the two structures to the outer peripheral direction of the bolt body, so that the screw cap can not be opened after the screw cap is automatically unscrewed, and the screw cap can not be taken in after the screw cap is automatically arranged.
Drawings
Fig. 1 is a schematic structural view of an adjustable anti-drop bolt according to the present invention.
Detailed Description
The technical scheme of the invention is described in detail through specific embodiments.
Fig. 1 is a schematic structural view of an adjustable anti-drop bolt according to the present invention.
Referring to fig. 1, an adjustable anti-drop bolt according to an embodiment of the present invention includes: the bolt comprises a bolt body 1, wherein a slot which extends linearly from one end face to the other end face of the bolt body 1 is formed in the bolt body; the groove is communicated in the radial direction of the bolt body 1, structural bodies 2 which are arranged at intervals along the communication direction of the groove are arranged in the groove, one ends of the two structural bodies 2 are respectively movably connected with the inner wall of the groove, and an adjusting mechanism is arranged between the two structural bodies 2; the adjusting mechanism comprises a first screw rod 3, a second screw rod 4 and a screw sleeve 5, the screw threads of the first screw rod 3 and the second screw rod 4 are opposite in rotation direction, the first screw rod 3 and the second screw rod 4 are positioned at two ends of the screw sleeve 5, one ends of the first screw rod 3 and the second screw rod 4, which are close to the screw sleeve 5, extend into the screw sleeve 5 and are in threaded connection with the screw sleeve 5, one ends of the first screw rod 3 and the second screw rod 4, which are far away from the screw sleeve 5, are respectively connected with the two structural bodies 2, so that when the screw sleeve 5 rotates, one side, which is far away from the connecting end, of the structural body 2 can be pushed to swing in the peripheral direction of the bolt body 1.
The invention is used in this way: when the bolt body 1 passes through workpieces to be connected and is screwed, the structural body 2 is received in the grooving by rotating the threaded sleeve 5, then the nut is screwed in the direction from the starting end of the grooving to the end of the grooving, and after the nut is fixed, the threaded sleeve 5 is rotated again to push the two structural bodies 2 to open towards the peripheral direction of the bolt body 1, so that a blocking part with the outer diameter larger than the inner hole of the nut is formed at the unscrewing end of the nut.
As can be seen from the above, according to the invention, the slot is formed in the bolt body 1, two structures 2 are arranged in the slot at intervals along the penetrating direction of the slot, an adjusting mechanism is arranged between the two structures 2, one ends of the two structures 2 are respectively connected with the inner wall of the slot in a movable manner, the adjusting mechanism comprises the first screw 3, the second screw 4 and the screw sleeve 5, the threads of the first screw 3 and the second screw 4 are opposite in directions, the first screw 3 and the second screw 4 respectively extend into the screw sleeve 5 from two ends of the screw sleeve 5 and are connected with the screw sleeve 5 in a threaded manner, one ends of the first screw 3 and the second screw 4 far from the screw sleeve 5 are respectively connected with the two structures 2, so that the free ends of the structures 2 can be pushed to swing along the radial direction of the bolt body 1 when the screw sleeve 5 is rotated, the two structures 2 are retracted into the slot by rotating the screw sleeve 5 when the nut is in the nut, then screwed into the nut from the starting end direction of the slot, and the screw sleeve 5 is rotated again after the nut is fixed, so that the two structures 2 are pushed to be prevented from being unscrewed in the circumferential direction of the nut, and the nut cannot be opened out of the nut.
In addition, in this embodiment, a limiting portion is disposed on the first screw 3 or the second screw 4, and when the threaded sleeve 5 abuts against the limiting portion, the structural body 2 is located inside the slot, so as to facilitate screwing in and screwing out of the nut.
In this embodiment, the structural body 2 is a strip-shaped body arranged along the extending direction of the cutting groove, and is made of spring steel, so that when the two structural bodies 2 are pushed to open towards the outer wall direction of the bolt body 1 by the adjusting mechanism, the distance between the side surface of the two structural bodies 2, which is close to each other, and the axis line of the bolt body 1 is gradually increased from the connecting end of the structural body 2 to the free end of the side surface, so that when the nut is matched with the bolt body 1, when the position of the nut is located between the two ends of the structural body 2, the elastic deformation capability of the structural body 2 can be utilized to enable the side surface of the structural body 2, which is close to the unscrewing end of the nut, to abut against the side surface of the nut after certain deformation is generated by the thrust of the adjusting mechanism, so that the nut cannot rotate towards the unscrewing direction, thereby achieving the purpose of preventing the looseness of the nut, and simultaneously, by utilizing the deformation resistance capability of the spring steel, the structural body 2 can recover the inherent state after the thrust is disappeared. In this embodiment, the side surfaces of the two structural bodies 2 close to each other are provided with sliding grooves, and one ends of the first screw rod 3 and the second screw rod 4, which are far away from the screw sleeve 5, are respectively in sliding connection with the sliding grooves on the two structural bodies 2, so that the adjusting mechanism can move up and down along the axial direction of the bolt body 1, and the opening angle of the structural bodies 2 can be adjusted conveniently according to the screwing quantity of the screw cap.
In this embodiment, the side surfaces of the two structural bodies 2 far away from each other are all cambered surfaces coaxially arranged with the bolt body 1, a plurality of first screw teeth parts which are arranged at equal intervals along the height direction of the bolt body 1 are arranged on the cambered surfaces of the two structural bodies 2, a plurality of second screw teeth parts which are arranged at equal intervals along the height direction of the bolt body 1 are arranged on the outer surface of the bolt body 1, and when the cambered surfaces of the two structural bodies 2 and the outer surface of the bolt body 1 are in the same annular surface, the first screw teeth parts on the two structural bodies 2 are respectively in butt joint with the second screw teeth parts on the bolt body 1 in a one-to-one correspondence manner so as to form screw teeth which spiral around the axial lead of the bolt body 1. In addition, for convenient adjustment, the first screw 3 is provided with a limiting part, and when the screw sleeve 5 abuts against the limiting part, the first screw tooth parts and the second screw tooth parts on the first screw 3 and the second screw 4 are in butt joint.
In this embodiment, the structural body 2 is rotatably connected to the side wall of the slot, so that the structural body 2 can swing back and forth in the radial direction of the bolt body 1, and thus, the end of the structural body 2 away from the connecting end thereof can slide out from the side of the slot, so as to facilitate the rotation of the screw sleeve 5. The outer surface of the screw sleeve 5 is provided with anti-skid patterns.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. An adjustable anti-drop bolt, comprising: the bolt comprises a bolt body (1), wherein a slot extending linearly from one end face to the other end face of the bolt body (1) is formed in the bolt body; the groove is communicated in the radial direction of the bolt body (1), structural bodies (2) which are arranged at intervals along the communication direction of the groove are arranged in the groove, one ends of the two structural bodies (2) are respectively and movably connected with the inner wall of the groove, and an adjusting mechanism is arranged between the two structural bodies (2); the adjusting mechanism comprises a first screw rod (3), a second screw rod (4) and a screw sleeve (5), the threads of the first screw rod (3) and the threads of the second screw rod (4) are opposite in rotation direction, the first screw rod (3) and the second screw rod (4) are positioned at two ends of the screw sleeve (5), one ends of the first screw rod (3) and the second screw rod (4) close to the screw sleeve (5) extend into the screw sleeve (5) and are in threaded connection with the screw sleeve (5), and one ends of the first screw rod (3) and the second screw rod (4) far away from the screw sleeve (5) are respectively connected with the two structural bodies (2);
The cambered surface of the structural body (2) is provided with a plurality of first screw thread parts which are arranged at equal intervals along the height direction of the bolt body (1), the outer surface of the bolt body (1) is provided with a plurality of second screw thread parts which are arranged at equal intervals along the height direction of the bolt body, and when the cambered surface of the structural body (2) and the outer surface of the bolt are positioned on the same annular surface, each first screw thread part on the structural body (2) is in butt joint with each second screw thread part on the bolt body (1) in a one-to-one correspondence manner so as to form screw threads which spiral and spiral around the axial lead of the bolt body (1);
The structural body (2) is a strip-shaped body arranged along the extending direction of the cutting groove and is made of spring steel;
When the bolt body (1) passes through workpieces to be connected and is put on a nut, the structural body (2) is received in the cutting groove by rotating the threaded sleeve (5), then the nut is screwed in from the starting end of the cutting groove to the terminal end direction of the cutting groove, and after the nut is fixed, the threaded sleeve (5) is rotated again so as to push the two structural bodies (2) to open towards the peripheral direction of the bolt body (1), so that a blocking part with the outer diameter larger than an inner hole of the nut is formed at the unscrewing end of the nut;
a limiting part is arranged on the first screw (3) and/or the second screw (4), and when the threaded sleeve (5) is abutted against the limiting part, the structural body (2) is positioned in the cutting groove;
the side surfaces of the two structural bodies (2) close to each other are provided with sliding grooves, and one ends of the first screw rod (3) and the second screw rod (4) far away from the screw sleeve (5) are respectively connected with the sliding grooves on the two structural bodies (2) in a sliding manner;
The side surfaces of the two structural bodies (2) which are far away from each other are cambered surfaces which are coaxially arranged with the bolt body (1).
2. The adjustable anti-drop bolt according to claim 1, characterized in that a limit part is provided on the first screw (3) and/or the second screw (4), and when the screw sleeve (5) abuts against the limit part, the first screw tooth part abuts against the second screw tooth part.
3. The adjustable anti-drop bolt according to claim 1, characterized in that the structural body (2) is rotatably connected to the side wall of the slot so that the structural body (2) can swing back and forth in the radial direction of the bolt body (1).
4. An adjustable anti-drop bolt according to any one of claims 1-3, characterized in that the outer surface of the threaded sleeve (5) is provided with anti-slip threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038991.2A CN107605913B (en) | 2017-10-30 | 2017-10-30 | Adjustable anti-drop bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038991.2A CN107605913B (en) | 2017-10-30 | 2017-10-30 | Adjustable anti-drop bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107605913A CN107605913A (en) | 2018-01-19 |
| CN107605913B true CN107605913B (en) | 2024-05-28 |
Family
ID=61085640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711038991.2A Active CN107605913B (en) | 2017-10-30 | 2017-10-30 | Adjustable anti-drop bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107605913B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561403A (en) * | 2018-07-13 | 2018-09-21 | 嘉兴涵祺汽配科技有限公司 | A kind of high-strength bolt easy to use |
| CN112610580B (en) * | 2020-12-22 | 2022-12-13 | 泉州双益机械有限公司 | Expansion bolt |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01173515U (en) * | 1988-05-27 | 1989-12-08 | ||
| US5809623A (en) * | 1997-08-06 | 1998-09-22 | Delaware Capital Formation, Inc. | Squeeze clamp |
| JP2003214419A (en) * | 2002-01-24 | 2003-07-30 | Nec Tokin Corp | Fastening member |
| CN103496346A (en) * | 2013-10-15 | 2014-01-08 | 金华市融昌工具有限公司 | Toggle rod type connecting fixing clamp for car roof trunk |
| CN206129848U (en) * | 2016-10-20 | 2017-04-26 | 安徽江淮汽车集团股份有限公司 | Bolt and fixed knot construct |
| CN106837973A (en) * | 2017-04-13 | 2017-06-13 | 四川西普石油物资装备有限公司 | Petroleum works mechanical connection fastener |
| CN207364058U (en) * | 2017-10-30 | 2018-05-15 | 安徽凯瑞汽配制造有限公司 | A kind of adjustable type anti-drop bolt |
-
2017
- 2017-10-30 CN CN201711038991.2A patent/CN107605913B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01173515U (en) * | 1988-05-27 | 1989-12-08 | ||
| US5809623A (en) * | 1997-08-06 | 1998-09-22 | Delaware Capital Formation, Inc. | Squeeze clamp |
| JP2003214419A (en) * | 2002-01-24 | 2003-07-30 | Nec Tokin Corp | Fastening member |
| CN103496346A (en) * | 2013-10-15 | 2014-01-08 | 金华市融昌工具有限公司 | Toggle rod type connecting fixing clamp for car roof trunk |
| CN206129848U (en) * | 2016-10-20 | 2017-04-26 | 安徽江淮汽车集团股份有限公司 | Bolt and fixed knot construct |
| CN106837973A (en) * | 2017-04-13 | 2017-06-13 | 四川西普石油物资装备有限公司 | Petroleum works mechanical connection fastener |
| CN207364058U (en) * | 2017-10-30 | 2018-05-15 | 安徽凯瑞汽配制造有限公司 | A kind of adjustable type anti-drop bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107605913A (en) | 2018-01-19 |
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