CN210106353U - Combined screw capable of preventing loosening - Google Patents
Combined screw capable of preventing loosening Download PDFInfo
- Publication number
- CN210106353U CN210106353U CN201920870882.5U CN201920870882U CN210106353U CN 210106353 U CN210106353 U CN 210106353U CN 201920870882 U CN201920870882 U CN 201920870882U CN 210106353 U CN210106353 U CN 210106353U
- Authority
- CN
- China
- Prior art keywords
- bolt
- rod
- piston
- head
- limiting
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a can prevent not hard up combination screw, including shank of bolt and footing, the outside cover of shank of bolt is equipped with the rubber circle, and the top of shank of bolt is connected with the spacing ring, the spacing ring runs through from the surface of overhead guard and backing plate respectively, and the overhead guard is located the top of backing plate, the internally mounted of spacing ring has little bolt head, and the surface of little bolt head has seted up the external screw thread, the connecting rod is installed to the below of little bolt head, and the below of connecting rod is fixed with the piston, the fixed head and the spacing cover interconnect of piston through the below, the below of shank of bolt is provided with the footing, and the both sides of footing have seted up the opening, the opening is run through by the stopper. According to the combined screw capable of preventing looseness, after the bolt rod is inserted into the metal plate and the fixing head is upwards extended, the pressure inside the bolt rod is reduced, and the external pressure is greater than the pressure inside the bolt rod, so that the combined screw is extruded and prevented from loosening.
Description
Technical Field
The utility model relates to a combination screw technical field specifically is a can prevent not hard up combination screw.
Background
The combined screw is characterized in that a washer is arranged above the bolt, so that the combined screw is convenient to use, and during installation, the washer improves friction force, so that the bolt is installed more tightly, and the combined screw is often used for installing and fixing metal plates. The existing combined screw can loosen after a long time, so that a gap exists between a gasket and the surface of a plate, and the plate is fixed unstably.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can prevent not hard up combination screw to propose combination screw in solving above-mentioned background art, after long-term, can take place the problem of the not hard up condition.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a can prevent not hard up combination screw, includes shank of bolt and footing, the outside cover of shank of bolt is equipped with the rubber circle, and the top of shank of bolt is connected with the spacing ring, the spacing ring runs through from the surface of overhead guard and backing plate respectively, and the overhead guard is located the top of backing plate, the internally mounted of spacing ring has little bolt head, and the surface of little bolt head has seted up the external screw thread, the connecting rod is installed to the below of little bolt head, and the below of connecting rod is fixed with the piston, the piston passes through the fixed head and the spacing cover interconnect of below, the below of shank of bolt is provided with the footing, and the both sides of footing have seted up the opening, the opening is run through by the stopper, and the upper end of stopper is fixed in the below of spacing cover, the notch has been seted up to the upper surface of.
Preferably, the inner wall of the rubber ring is fixedly connected with the outer wall of the bolt rod, and the outer wall of the rubber ring is of an arc-shaped structure.
Preferably, the small bolt head is in threaded engagement connection with the inner wall of the limiting ring through external threads on the outer side, the limiting ring and the bolt rod are of an integrated structure, and the bolt rod is of a stepped shaft structure.
Preferably, the piston and the inner wall of the bolt rod form a sliding friction structure, the piston is fixedly connected with the connecting rod above, and the connecting rod and the small bolt head form a rotating connection.
Preferably, the limiting cover is arranged to be of a U-shaped structure, and the limiting cover and the limiting block form a dismounting and mounting structure connected with the clamping groove.
Preferably, the stopper is provided with 2 at the inside symmetry of footing, and the side of 2 stoppers passes through spring interconnect, the stopper outside sets up to the structure of slope, and the maximum height of stopper is less than the height of opening.
Compared with the prior art, the beneficial effects of the utility model are that: the combined screw capable of preventing loosening is provided with a screw head,
1. the lower part of the base plate is arranged to be inclined, so that the fixed plate can be conveniently contacted, the stability of the bolt is improved, the situation that the bolt is not tightly occluded is avoided, and after the bolt is inserted into the bolt hole, the sealing ring plays a role in sealing, so that the inside of the threaded hole is a sealed cavity;
2. the inner part of the limiting ring is of a hollow structure, so that after the bolt rod is inserted into the metal plate and the fixing head is extended upwards, the pressure in the bolt rod is reduced, the pressure is reduced, the external pressure is greater than the pressure in the bolt rod, the combined screw is extruded, the bolt is stably installed in the bolt hole, and looseness is prevented;
3. after the fixed head moves upwards, the piston drives the limiting cover to move upwards, so that the two limiting blocks move outwards, the limiting blocks are clamped in the threaded holes, the bolt rods are prevented from being connected with the threaded holes, and the overall stability is further improved.
Drawings
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is a schematic view of the external structure of the present invention;
FIG. 3 is a schematic view of the installation structure of the limiting cover and the limiting block of the present invention;
FIG. 4 is a side view of the bottom of the present invention;
fig. 5 is a schematic view of the top cover of the present invention.
In the figure: 1. a bolt shank; 2. a rubber ring; 3. a limiting ring; 4. a top cover; 5. a base plate; 6. a small bolt head; 7. an external thread; 8. a connecting rod; 9. a piston; 10. a fixed head; 11. a limiting cover; 12. footing; 13. a limiting block; 14. a spring; 15. a port; 16. a notch.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a combined screw capable of preventing looseness comprises a bolt rod 1, a rubber ring 2, a limiting ring 3, a top cover 4, a base plate 5, a small bolt head 6, external threads 7, a connecting rod 8, a piston 9, a fixing head 10, a limiting cover 11, bottom feet 12, a limiting block 13, a spring 14, through holes 15 and a notch 16, wherein the rubber ring 2 is sleeved outside the bolt rod 1, the limiting ring 3 is connected above the bolt rod 1, the limiting ring 3 penetrates through the surfaces of the top cover 4 and the base plate 5 respectively, the top cover 4 is positioned above the base plate 5, the small bolt head 6 is installed inside the limiting ring 3, the external threads 7 are formed in the outer surface of the small bolt head 6, the connecting rod 8 is installed below the small bolt head 6, the piston 9 is fixed below the connecting rod 8, the piston 9 is connected with the limiting cover 11 through the fixing head 10 below, the bottom feet 12 are arranged below the bolt rod 1, the through holes 15 are formed in the two sides of the bottom feet 12, the opening 15 is penetrated by the limiting block 13, the upper end of the limiting block 13 is fixed below the limiting cover 11, and the upper surface of the top cover 4 is provided with a notch 16.
The inner wall of rubber circle 2 is fixed connection with the outer wall of shank of bolt 1, and the outer wall of rubber circle 2 sets up to the arc structure, and shank of bolt 1 and 2 fixed connection of rubber circle avoid rubber circle 2 to carry out the free rotation to the sealing performance of rubber circle 2 has been improved.
Piston 9 constitutes the sliding friction structure with the inner wall of shank of bolt 1, and piston 9 and the connecting rod 8 fixed connection of top to connecting rod 8 constitutes to rotate with little bolt head 6 and is connected, and when rotating little bolt head 6, connecting rod 8 of below can not rotate, is convenient for keep stable with piston 9 for piston 9 steadily shifts up.
Spacing cover 11 sets up to U type structure, and just spacing cover 11 constitutes the dismantlement mounting structure that the draw-in groove is connected with stopper 13, and spacing cover 11 carries out spacing fixed to 2 stoppers 13, and when shank of bolt 1 when drilling, stopper 13 is for accomodating the state, can not hinder drilling work.
The working principle is as follows: firstly, clamping the notch 16 at the front end of an electric drill gun, driving the bolt rod 1 into a metal plate by the electric drill gun to fix the metal plate, when the rubber ring 2 enters the metal plate, the rubber ring 2 is extruded under the pressure of the peripheral side, then the bolt rod 1 continuously moves downwards, and when the bolt rod 1 is completely immersed in the metal plate, the backing plate 5 is pressed against the metal plate at the moment, and the rubber ring 2 is in close contact with the surrounding metal plate, so that the sealing effect is achieved;
then, changing a small gun head, inserting the gun head into the limiting ring 3, fixing the gun head and the small bolt head 6 to drive the small bolt head 6 to rotate, enabling the external thread 7 on the outer wall of the small bolt head 6 to move upwards along the inner wall of the limiting ring 3, driving the piston 9 to move upwards through the connecting rod 8 by the small bolt head 6, driving the limiting cover 11 to move upwards through the fixing head 10 by the piston 9, so that the upper ends of the limiting cover 11 and the limiting block 13 fall off, pushing the limiting block 13 towards two sides by the elastic force of the spring 14, extending the limiting block 13 out of the notch 16, and clamping and fixing the inner wall of the metal plate by the limiting block 13;
further, after the piston 9 is moved upward, the pressure of the lower end inside the bolt shank 1 is reduced, so that the pressure inside the bolt shank 1 is lower than the external pressure, and the small bolt head 6 is fixed by the pressure.
Those not described in detail in this specification are within the skill of the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A combination screw capable of preventing loosening comprises a bolt rod (1) and a foot (12), and is characterized in that: the outer side of the bolt rod (1) is sleeved with a rubber ring (2), a limiting ring (3) is connected above the bolt rod (1), the limiting ring (3) penetrates through the surfaces of a top cover (4) and a base plate (5) respectively, the top cover (4) is located above the base plate (5), a small bolt head (6) is installed inside the limiting ring (3), external threads (7) are formed in the outer surface of the small bolt head (6), a connecting rod (8) is installed below the small bolt head (6), a piston (9) is fixed below the connecting rod (8), the piston (9) is connected with a limiting cover (11) through a fixing head (10) below the piston (9), a bottom foot (12) is arranged below the bolt rod (1), through holes (15) are formed in two sides of the bottom foot (12), the through holes (15) are penetrated through by a limiting block (13), and the upper end of the limiting block (13) is fixed below the limiting cover (11), the upper surface of the top cover (4) is provided with a notch (16).
2. The anti-loosening combination screw as claimed in claim 1, wherein: the inner wall of the rubber ring (2) is fixedly connected with the outer wall of the bolt rod (1), and the outer wall of the rubber ring (2) is of an arc-shaped structure.
3. The anti-loosening combination screw as claimed in claim 1, wherein: the small bolt head (6) is in threaded engagement connection with the inner wall of the limiting ring (3) through the external threads (7) on the outer side, the limiting ring (3) and the bolt rod (1) are of an integrated structure, and the bolt rod (1) is of a stepped shaft structure.
4. The anti-loosening combination screw as claimed in claim 1, wherein: the piston (9) and the inner wall of the bolt rod (1) form a sliding friction structure, the piston (9) is fixedly connected with the connecting rod (8) above, and the connecting rod (8) and the small bolt head (6) form a rotating connection.
5. The anti-loosening combination screw as claimed in claim 1, wherein: spacing cover (11) set up to U type structure, and spacing cover (11) and stopper (13) constitute the dismantlement mounting structure that the draw-in groove is connected.
6. The anti-loosening combination screw as claimed in claim 1, wherein: stopper (13) are provided with 2 in the inside symmetry of footing (12), and the side of 2 stopper (13) passes through spring (14) interconnect, the stopper (13) outside sets up to the structure of slope, and the maximum height of stopper (13) is less than the height of opening (15).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920870882.5U CN210106353U (en) | 2019-06-11 | 2019-06-11 | Combined screw capable of preventing loosening |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201920870882.5U CN210106353U (en) | 2019-06-11 | 2019-06-11 | Combined screw capable of preventing loosening |
Publications (1)
Publication Number | Publication Date |
---|---|
CN210106353U true CN210106353U (en) | 2020-02-21 |
Family
ID=69564568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201920870882.5U Active CN210106353U (en) | 2019-06-11 | 2019-06-11 | Combined screw capable of preventing loosening |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN210106353U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111425507A (en) * | 2020-05-21 | 2020-07-17 | 济南实达紧固件有限公司 | Anti-loosening flange bolt |
CN111622129A (en) * | 2020-06-08 | 2020-09-04 | 浙江万里建设工程有限公司 | Locking anchor bolt and cliff abutment construction method applying same |
CN113685418A (en) * | 2021-09-02 | 2021-11-23 | 浙江盛世瑞金紧固件股份有限公司 | Anti-vibration fastening bolt for automobile engine |
-
2019
- 2019-06-11 CN CN201920870882.5U patent/CN210106353U/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111425507A (en) * | 2020-05-21 | 2020-07-17 | 济南实达紧固件有限公司 | Anti-loosening flange bolt |
CN111622129A (en) * | 2020-06-08 | 2020-09-04 | 浙江万里建设工程有限公司 | Locking anchor bolt and cliff abutment construction method applying same |
CN111622129B (en) * | 2020-06-08 | 2021-08-24 | 浙江万里建设工程有限公司 | Locking anchor bolt and cliff abutment construction method applying same |
CN113685418A (en) * | 2021-09-02 | 2021-11-23 | 浙江盛世瑞金紧固件股份有限公司 | Anti-vibration fastening bolt for automobile engine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN210106353U (en) | Combined screw capable of preventing loosening | |
CN213512000U (en) | Reduction gear that stability is high | |
CN216666201U (en) | Locking bolt | |
CN217081144U (en) | Oil leakage preventing sealing bearing seat mechanism of horizontal centrifuge rotor | |
CN217028850U (en) | Wellhead packing box of oil pumping unit | |
CN216510166U (en) | Environment-friendly barrel cover convenient to install | |
CN205936742U (en) | Machine oil filler lid assembly | |
CN210164438U (en) | Multi-head middle support drilling device | |
CN213773958U (en) | Environment-friendly building thermal insulation wall | |
US20220079343A1 (en) | Hook for writing board | |
CN206670465U (en) | A kind of mechanism of replaceable target | |
CN209839991U (en) | Additional fixing mechanism for lamp post | |
CN211176060U (en) | Flat transformer stable in installation | |
CN212028288U (en) | Anti-loosening fastening device | |
CN211924629U (en) | Upper end cover of hydraulic mechanism | |
CN109958336B (en) | Anti-falling door lock | |
CN208961066U (en) | New drill is used in a kind of punching | |
CN214330581U (en) | Oil recovery well head screw thread protection device | |
CN216819723U (en) | High-frequency rectifier | |
CN112318420A (en) | Assembling and disassembling device for graphite sealing device and using method | |
CN213124019U (en) | Leakage-proof oil-immersed power transformer | |
CN212676809U (en) | Cable clamping plate convenient for clamping cable | |
CN218325684U (en) | Low-resistance locking type horn head coarse thread screw | |
CN216808059U (en) | Cap screwing die and cap screwing machine | |
CN215056328U (en) | Downward-turning type outward-opening handle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |