CN209818505U - Anti-dismantling sleeve for bolt fastener - Google Patents
Anti-dismantling sleeve for bolt fastener Download PDFInfo
- Publication number
- CN209818505U CN209818505U CN201920596980.4U CN201920596980U CN209818505U CN 209818505 U CN209818505 U CN 209818505U CN 201920596980 U CN201920596980 U CN 201920596980U CN 209818505 U CN209818505 U CN 209818505U
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- swing rod
- bolt
- inner hole
- hole
- lever
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Abstract
The utility model discloses an anti-dismantling sleeve for bolt fasteners, which comprises an anti-dismantling sleeve body with a sleeve structure, wherein the outer surface of the anti-dismantling sleeve body is a circular cylindrical surface structure and comprises an inner hole, a rear end cover and a lock cylinder; the inner hole is of an inner square structure, an installation groove arranged along the axial direction of the inner hole is arranged on the inner hole, and a jacking pin arranged along the radial direction of the inner hole and a jacking pin expansion control mechanism with a return spring are arranged in the installation groove; the rear end cover is provided with a lock cylinder mounting through hole, the lock cylinder is fixedly mounted in the lock cylinder mounting through hole, the lock cylinder comprises a lock tongue extending forwards, the front end of the lock tongue is provided with a rotary control plate, and the rotary control plate comprises a large diameter side, a small diameter side and a control side which can be enclosed into a scalene fan-shaped structure or a scalene triangle structure. The utility model discloses only need carry out little change to bolt or nut, can realize the anti-disassembly after the suit is on bolt or nut, the anti-disassembly installation when specially adapted passes through bolt erection joint to equipment or spare part that has the theftproof demand.
Description
Technical Field
The utility model relates to a prevent tearing open the cover, specifically be one kind be applicable to and protect the bolt fastening piece that prevents dismantling with the bolt fastening piece that prevents tearing open the cover such as the bolt or nut to fixed mounting, belong to bolt fastening piece anti-disassembly technical field.
Background
The fastener is a mechanical part for fastening two or more parts (or components) to connect the parts into a whole structure, and is the most widely used mechanical base part. The bolt connection mode of matching the bolt and the nut is usually used for fastening and connecting two parts with through holes, and the two parts can be separated if the nut is screwed off from the bolt, namely, the bolt connection mode has the characteristic of convenient disassembly besides the fastening characteristic, so the bolt connection mode is widely applied to various industries.
When the bolt is used, the stud is generally inserted into connecting holes of two connected pieces, and then a nut is screwed on a threaded section of the stud and is screwed tightly. The head of traditional bolt and the periphery of nut generally are regular hexagon, use ordinary spanner, pliers just can screw up or the operation of pine unloads even, and it is convenient to dismantle, but this has also brought the potential safety hazard for equipment or spare part connected or installed, like installing in open-air equipment of unmanned guard such as power equipment, oilfield equipment in the field through bolted connection, park the wheel of vehicle etc. even in open air, all have stolen hidden danger.
Disclosure of Invention
In view of the above problem, the utility model provides a bolt fastener prevents tearing open cover only needs to carry out little change to bolt or nut, can realize the anti-disassembly after the suit is on bolt or nut, and then realizes the theftproof function, and the anti-disassembly installation when specially adapted passes through bolt erection joint to equipment or the spare part that has the theftproof demand.
In order to achieve the purpose, the anti-disassembly sleeve of the bolt fastener comprises an anti-disassembly sleeve body with a sleeve structure, wherein the outer surface of the anti-disassembly sleeve body is of a circular cylindrical surface structure, and the anti-disassembly sleeve body comprises an inner hole, a rear end cover and a lock cylinder;
the inner hole is an inner square structure matched with the outer square structure of the bolt head or the nut in size, the depth of the inner hole is matched with the thickness of the outer square structure of the bolt head or the nut in size, an installation groove arranged along the axial direction of the inner hole is formed in the inner hole, and a jacking pin arranged along the radial direction of the inner hole and a jacking pin expansion control mechanism with a reset spring are installed in the installation groove;
the geometric center position of rear end cap put and be equipped with the lock core installation through-hole that sets up along axial direction, lock core fixed mounting in lock core installation through-hole, the lock core includes the spring bolt that stretches out to the place ahead, the front end of spring bolt be equipped with the knock pin on the hole flexible control mechanism surface contact cooperation set up the rotary control board, rotary control board is including enclosing into big footpath limit, path limit and the control limit of inequilateral fan-shaped structure or inequilateral triangle-shaped structure, the control limit is arcwall face structure or inclined plane structure.
As the utility model discloses an embodiment of the flexible control mechanism of knock pin, the flexible control mechanism of knock pin includes lever and lever supporting seat, and the lever supporting seat is fixed to be set up in mounting groove, and the body of rod of lever is articulated to be installed on the lever supporting seat, and the front end and the knock pin of lever are connected, and the rear end of lever corresponds the overlap joint on the arcwall face or the inclined plane of rotation control board, and reset spring corresponds the swing direction location setting of lever between lever and mounting groove.
As the utility model discloses another kind of embodiment of flexible control mechanism of knock pin, the flexible control mechanism of knock pin includes preceding swing rod, back swing rod and swinging arms support, the swinging arms supports fixed the setting in mounting groove, the rear end of preceding swing rod and the front end of back swing rod are all articulated to be installed on the swinging arms supports, the rear end of preceding swing rod and the front end of back swing rod all are equipped with the tooth structure that the cooperation set up, the rear end of preceding swing rod and the meshing of the front end tooth portion of back swing rod are connected, the front end and the knock pin of preceding swing rod are connected, the rear end of back swing rod corresponds the overlap joint on the arcwall face or the inclined plane of rotation control board, the swing direction location that reset spring corresponds preceding swing rod or back swing rod sets up between preceding swing rod and mounting groove, or the swing direction location that reset spring corresponds back swing rod sets up between back swing rod and mounting groove.
As a further improvement of the utility model, the hinge mount of the front end and the knock pin of the knock pin telescopic control mechanism, the position of the corresponding knock pin in the mounting groove is still equipped with knock pin guide structure.
As the utility model discloses a further improvement scheme, rotary control panel's big footpath limit or path limit and knock pin telescoping control mechanism's face contact position are equipped with location plane, and location plane and control limit rounding off set up.
As the utility model discloses a further improvement scheme is equipped with the location arch that sets up along the axial direction protrusion on the hole bottom position of hole, and the protruding correspondence of location sets up at the rotatory extreme position of rotation control board, and fixes a position the position size cooperation of bellied protruding altitude size and locating hole.
As the utility model discloses a further improvement scheme, the axle center central symmetry of mounting groove edge hole sets up to a plurality ofly, and the quantity and the position that the rotary control board corresponds mounting groove set up to a plurality ofly.
Compared with the prior art, before the bolt fastener is installed and used, a positioning hole needs to be drilled in a position which corresponds to the ejector pin on the outer square structure of the bolt head or the nut in advance, the bolt fastener is sleeved on the outer square structure of the bolt head or the nut in a sleeved mode, the lock cylinder is controlled through the key to enable the lock tongue to drive the rotary control plate to rotate, in the rotating process of the rotary control plate, the rotary control plate changes through the surface contact position of the control edge of the arc-shaped surface structure or the control edge of the inclined surface structure in contact connection with the ejector pin telescopic control mechanism, the ejector pin telescopic control mechanism is controlled to enable the ejector pin to stretch out and penetrate into the positioning hole, and the installation and connection of the anti-disassembly sleeve body and the outer square structure of the bolt head or the nut. Because the outer surface of the anti-disassembly sleeve body is of a circular cylindrical surface structure, and the inner hole is in circumferential positioning connection with the outer square structure of the bolt head or the nut through the inner hexagonal structure, after the knock pin penetrates into the positioning hole, the outer surface of the circular cylindrical surface structure of the anti-disassembly sleeve body can completely shield the outer square structure of the bolt head or the nut, so that the anti-disassembly and anti-theft functions are realized, and the anti-disassembly device is particularly suitable for anti-disassembly installation when equipment or parts with anti-theft requirements are connected through bolt installation.
Drawings
Fig. 1 is a schematic structural view of the present invention when the present invention is sleeved on the outer square structure of the bolt head or nut and is in a locked state;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a cross-sectional view B-B of FIG. 1;
fig. 4 is a partially enlarged schematic structural view of an embodiment of the knock pin expansion and contraction control mechanism of the present invention;
fig. 5 is a partially enlarged schematic structural view of another embodiment of the knock pin expansion and contraction control mechanism of the present invention.
In the figure: 1. the lock cylinder is characterized by comprising an inner hole, 11, an installation groove, 12, a top pin, 13, a return spring, 14, a lever, 15, a lever supporting seat, 16, a front swing rod, 17, a rear swing rod, 18, a swing rod support, 2, a rear end cover, 21, a lock cylinder installation through hole, 22, a positioning protrusion, 3, a lock cylinder, 31, a lock tongue, 32, a rotation control plate, 4, an outer square structure of a bolt head or a nut, 41, a positioning hole, 5 and a key.
Detailed Description
The present invention will be further explained with reference to the drawings (hereinafter, the left direction of fig. 1 is referred to as the front).
As shown in figure 1, the anti-dismantling sleeve of the bolt fastener comprises an anti-dismantling sleeve body with a sleeve structure, wherein the outer surface of the anti-dismantling sleeve body is of a circular cylindrical surface structure, and the anti-dismantling sleeve body comprises an inner hole 1, a rear end cover 2 and a lock cylinder 3.
The inner hole 1 is an inner hexagonal structure matched with the outer square structure 4 of the bolt head or the nut in size, the depth of the inner hole 1 is matched with the thickness of the outer square structure 4 of the bolt head or the nut in size, an installation groove 11 arranged along the axial direction of the inner hole 1 is formed in the inner hole 1, and a jacking pin 12 arranged along the radial direction of the inner hole 1 and a jacking pin expansion control mechanism with a reset spring 13 are installed in the installation groove 11.
The geometric center position of rear end housing 2 be equipped with along the lock core installation through-hole 21 that the axial direction set up, 3 fixed mounting of lock core in lock core installation through-hole 21, lock core 3 includes the spring bolt 31 that stretches out to the front, the front end of spring bolt 31 is equipped with the rotatory control panel 32 that sets up with the flexible control mechanism surface contact cooperation of knock pin on hole 1, as shown in fig. 3, rotatory control panel 32 includes major diameter limit, minor diameter limit and the control limit that can enclose into inequilateral fan-shaped structure or inequilateral triangle-shaped structure, the control limit is arcwall face structure or inclined plane structure.
Before the anti-disassembly sleeve of the bolt fastener is installed and used, a positioning hole 41 needs to be drilled in a position, corresponding to the ejector pin 12, on the outer square structure 4 of the bolt head or the nut in a matching mode, after the anti-disassembly sleeve of the bolt fastener is sleeved on the outer square structure 4 of the bolt head or the nut, the lock cylinder 3 is controlled through the key 5 to enable the lock tongue 31 to drive the rotary control plate 32 to rotate, in the rotating process of the rotary control plate 32, the rotary control plate 32 enables the ejector pin 12 to stretch out and penetrate into the positioning hole 41 through the surface contact position change of the control edge of the arc-shaped surface structure or the control edge of the inclined surface structure in contact connection with the ejector pin telescopic control mechanism, and the installation and connection of the anti-disassembly sleeve body and the outer square structure 4 of the bolt head or the. Because the outer surface of the anti-disassembly sleeve body is of a circular cylindrical surface structure, and the inner hole 1 is circumferentially positioned and connected with the bolt head or the outer square structure 4 of the nut through the inner hexagonal structure, after the ejector pin 12 penetrates into the positioning hole 41, the outer surface of the circular cylindrical surface structure of the anti-disassembly sleeve body can completely shield the outer square structure 4 of the bolt head or the nut, and anti-disassembly is further achieved. When the bolt fastener is required to be disassembled, the lock cylinder 3 is controlled by the key 5 to enable the bolt 31 to drive the rotary control plate 32 to rotate reversely, the ejector pin 12 is controlled by the ejector pin telescopic control mechanism to be pulled out from the positioning hole 41 under the reset elastic action of the reset spring 13, unlocking can be achieved, and the bolt fastener anti-disassembling sleeve can be integrally taken down.
As the utility model discloses an implementation mode of flexible control mechanism of knock pin, as shown in fig. 4, the flexible control mechanism of knock pin includes lever 14 and lever supporting seat 15, lever supporting seat 15 is fixed to be set up in mounting groove 11, the body of rod of lever 14 is articulated to be installed on lever supporting seat 15, the front end and the knock pin 12 of lever 14 are connected, the rear end of lever 14 corresponds the overlap joint on the arcwall face or the inclined plane of rotating control board 32, reset spring 13 corresponds the swing direction location setting of lever 14 between lever 14 and mounting groove 11, reset spring 13 can set up in the place ahead of lever supporting seat 15, also can set up the rear at lever supporting seat 15. The swinging of the control lever 14, and thus the extension or retraction of the knock pin 12, can be achieved by controlling the rotation of the rotary control plate 32.
As another embodiment of the ejector pin telescoping control mechanism of the present invention, as shown in fig. 5, the ejector pin telescoping control mechanism includes a front swing rod 16, a rear swing rod 17 and a swing rod support 18, the swing rod support 18 is fixedly disposed in the mounting groove 11, the rear end of the front swing rod 16 and the front end of the rear swing rod 17 are both hinged to the swing rod support 18, the rear end of the front swing rod 16 and the front end of the rear swing rod 17 are both provided with a tooth structure disposed in a matching manner, the rear end of the front swing rod 16 and the front end of the rear swing rod 17 are engaged and connected, the front end of the front swing rod 16 is connected to the ejector pin 12, the rear end of the rear swing rod 17 is correspondingly overlapped to the arc face or the inclined face of the rotation control panel 32, the return spring 13 is positioned between the front swing lever 16 and the mounting groove 11 corresponding to the swing direction of the front swing lever 16 or the rear swing lever 17, or the return spring 13 is positioned between the rear swing lever 17 and the mounting groove 11 corresponding to the swing direction of the rear swing lever 17. The swinging of the rear swing rod 17 can be controlled by controlling the rotation of the rotary control plate 32, and then the front swing rod 16 is driven to swing through the transmission of the tooth part, so that the extension or retraction of the ejector pin 12 is controlled.
In order to guarantee that knock pin 12 accurately moves and penetrates locating hole 41 smoothly along radial direction, as the utility model discloses a further improvement scheme, as shown in fig. 4, fig. 5, knock pin telescopic control mechanism's front end and knock pin 12 articulated installation, the position that corresponds knock pin 12 in the mounting groove 11 still is equipped with knock pin guide structure, and knock pin guide structure can be the uide bushing structure, also can be other guide structure such as guide block structure.
When the locking state, can not take place rotatoryly under reset spring 13's elasticity effect for guaranteeing rotary control board 32, as the utility model discloses a further improvement scheme, as shown in fig. 3, rotary control board 32's big footpath limit or path limit and knock pin telescopic control mechanism's face contact position are equipped with the location plane, and location plane and control limit rounding off set up. In the locking state, the jacking pin telescoping control mechanism is positioned on the positioning plane instead of the control edge, so that the rotary control plate 32 is ensured not to rotate under the action of the elastic force of the return spring 13.
Can fix a position the drill way position at locating hole 41 fast in order to realize in the installation, and can realize that the rotation angle of swivelling movement control panel 32 carries on spacingly, prevents that swivelling movement control panel 32 from doing the excessive rotation of crossing the flexible control mechanism of knock pin, as the utility model discloses a further improvement scheme, as shown in fig. 3, be equipped with on the hole bottom position of hole 1 along the protruding location arch 22 that sets up of axial direction, location arch 22 corresponds the rotation limit position who sets up at swivelling movement control panel 32, and the protruding height dimension of location arch 22 and the position size cooperation of locating hole 41. When this bolt fastener is prevented tearing open set suit on the foreign structure 4 of bolt head or nut, location arch 22 can carry out axial position location to the rear end face of the foreign structure 4 of bolt head or nut, and then can realize that knock pin 12 can fix a position the drill way position at locating hole 41 fast, and simultaneously, the location arch 22 of corresponding setting in the rotation limit position of rotation control board 32 can prevent that rotation control board 32 from doing the excessive rotation of crossing the telescopic control mechanism of knock pin.
In order to guarantee firm installation effect, as the utility model discloses a further improvement scheme, mounting groove 11 sets up to a plurality ofly along the axle center central symmetry of hole 1, and the quantity and the position that rotary control board 32 corresponds mounting groove 11 set up to a plurality ofly.
The utility model discloses a lock core 3 can adopt as shown in figure 1, with key 5 complex mechanical structure lock core, or adopt the mechanical structure lock core that has the trick lock structure, also can adopt other structure lock cores such as electronic control's electronic lock core.
Claims (7)
1. An anti-disassembly sleeve of a bolt fastener is characterized by comprising an anti-disassembly sleeve body with a sleeve structure, wherein the outer surface of the anti-disassembly sleeve body is of a circular cylindrical surface structure, and the anti-disassembly sleeve body comprises an inner hole (1), a rear end cover (2) and a lock cylinder (3);
the inner hole (1) is an inner square structure matched with the outer square structure (4) of the bolt head or the nut in size, the depth of the inner hole (1) is matched with the thickness of the outer square structure (4) of the bolt head or the nut, an installation groove (11) arranged along the axial direction of the inner hole (1) is formed in the inner hole (1), and a jacking pin (12) arranged along the radial direction of the inner hole (1) and a jacking pin expansion control mechanism with a reset spring (13) are installed in the installation groove (11);
the geometric center position of rear end cap (2) be equipped with lock core mounting through hole (21) that set up along axial direction, lock core (3) fixed mounting in lock core mounting through hole (21), lock core (3) are including spring bolt (31) that stretch out to the place ahead, the front end of spring bolt (31) be equipped with the rotatory control panel (32) that the flexible control mechanism surface contact cooperation of knock pin on hole (1) set up, rotatory control panel (32) are including enclosing into the major diameter limit, minor diameter limit and the control limit of fan-shaped structure or the triangle-shaped structure of inequilateral, the control limit is arcwall face structure or inclined plane structure.
2. The bolt fastener anti-dismantling sleeve as set forth in claim 1, wherein the knock pin expansion control mechanism comprises a lever (14) and a lever support base (15), the lever support base (15) is fixedly disposed in the mounting groove (11), a rod body of the lever (14) is hinge-mounted on the lever support base (15), a front end of the lever (14) is connected with the knock pin (12), a rear end of the lever (14) is correspondingly lap-jointed on an arc-shaped surface or an inclined surface of the rotation control plate (32), and the return spring (13) is positioned between the lever (14) and the mounting groove (11) corresponding to a swing direction of the lever (14).
3. The anti-dismantling sleeve of a bolt fastener according to claim 1, wherein the knock pin telescoping control mechanism comprises a front swing rod (16), a rear swing rod (17) and a swing rod support (18), the swing rod support (18) is fixedly arranged in the mounting groove (11), the rear end of the front swing rod (16) and the front end of the rear swing rod (17) are both hinged to the swing rod support (18), the rear end of the front swing rod (16) and the front end of the rear swing rod (17) are both provided with a tooth structure which is arranged in a matched manner, the rear end of the front swing rod (16) and the front end of the rear swing rod (17) are engaged and connected with each other, the front end of the front swing rod (16) is connected with the knock pin (12), the rear end of the rear swing rod (17) is correspondingly lapped on an arc-shaped surface or an inclined surface of the rotary control plate (32), the reset spring (13) is positioned between the front swing rod (16) and the mounting groove (11) corresponding to the swing direction of the front swing rod (16) or the rear swing rod (17), Or the return spring (13) is positioned and arranged between the rear swing rod (17) and the mounting groove (11) corresponding to the swing direction of the rear swing rod (17).
4. The bolt fastener anti-disassembly sleeve according to claim 1, 2 or 3, wherein the front end of the ejector pin expansion and contraction control mechanism is hinged with the ejector pin (12), and an ejector pin guide structure is further arranged in the mounting groove (11) at a position corresponding to the ejector pin (12).
5. The bolt fastener anti-disassembly sleeve according to claim 1, 2 or 3, wherein the large diameter side or the small diameter side of the rotary control plate (32) is provided with a positioning plane at the surface contact position of the jacking pin expansion control mechanism, and the positioning plane and the control side are smoothly transited.
6. The bolt fastener anti-disassembly sleeve as claimed in claim 1, 2 or 3, wherein the hole bottom of the inner hole (1) is provided with a positioning protrusion (22) which is arranged in a protruding manner along the axial direction, the positioning protrusion (22) is correspondingly arranged at the rotation limit position of the rotation control plate (32), and the protrusion height dimension of the positioning protrusion (22) is matched with the position dimension of the positioning hole (41).
7. The bolt fastener anti-disassembly sleeve according to claim 1, 2 or 3, wherein the mounting grooves (11) are symmetrically arranged in a plurality along the center of the axis of the inner hole (1), and the number and the positions of the rotary control plates (32) corresponding to the mounting grooves (11) are arranged in a plurality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920596980.4U CN209818505U (en) | 2019-04-28 | 2019-04-28 | Anti-dismantling sleeve for bolt fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920596980.4U CN209818505U (en) | 2019-04-28 | 2019-04-28 | Anti-dismantling sleeve for bolt fastener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209818505U true CN209818505U (en) | 2019-12-20 |
Family
ID=68881944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920596980.4U Expired - Fee Related CN209818505U (en) | 2019-04-28 | 2019-04-28 | Anti-dismantling sleeve for bolt fastener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209818505U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664540A (en) * | 2020-12-24 | 2021-04-16 | 浙江天元金属制品股份有限公司 | Multifunctional screw |
| CN112727898A (en) * | 2020-12-24 | 2021-04-30 | 浙江天元金属制品股份有限公司 | Screw with good adaptability |
-
2019
- 2019-04-28 CN CN201920596980.4U patent/CN209818505U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664540A (en) * | 2020-12-24 | 2021-04-16 | 浙江天元金属制品股份有限公司 | Multifunctional screw |
| CN112727898A (en) * | 2020-12-24 | 2021-04-30 | 浙江天元金属制品股份有限公司 | Screw with good adaptability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 |