CN210068735U

CN210068735U - Anti-withdrawal screw rod connecting device

Info

Publication number: CN210068735U
Application number: CN201920934050.5U
Authority: CN
Inventors: 戴建博
Original assignee: Shenzhen Dixuan Technology Co Ltd
Current assignee: Shenzhen Dixuan Technology Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-02-14
Anticipated expiration: 2029-06-20

Abstract

The utility model relates to a retreat-proof screw rod connecting device, which comprises a screw rod, a movable shell and a fixed shell; it is characterized in that the screw comprises a screw head and a cylinder; the cylinder is arranged on the screw head, and a cylindrical section, a polygonal cylinder section and a threaded section are sequentially arranged on the cylinder along the direction departing from the screw head; a round hole matched with the cylindrical section is arranged in the movable shell, and a polygonal through hole matched with the polygonal cylindrical section is arranged in the fixed shell; the first washer is arranged on the cylindrical section, and the fixing nut is matched with the threaded section; the first gasket is arranged between the movable shell and the screw head, and the fixed nut is tightly propped against the side end of the fixed shell; after the assembly, the movable shell is all hugged closely with set casing and first packing ring, and this utility model structure is simple, has avoided the movable shell to make the not hard up condition of nut at the rotation in-process well.

Description

Anti-withdrawal screw rod connecting device

Technical Field

The utility model relates to a prevent moving back a screw bolt connection technical field, in particular to prevent moving back lead screw connecting device.

Background

The bolt is a mechanical part, is a fastener consisting of a head part and a screw rod, needs to be matched with a nut and is used for fastening and connecting two parts with through holes, and the connection form is called bolt connection. If the nut is unscrewed from the bolt, the two parts can be separated, so that the bolt connection belongs to detachable connection. However, when the existing bolt and nut are used in a matched manner for fastening, the screwing degree is smaller and smaller along with the lapse of time, and the phenomenon of wire withdrawing can occur.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art not enough, provide one kind and prevent moving back lead screw connecting device, should prevent moving back lead screw connecting device and can solve above-mentioned problem well.

In order to meet the above requirements the utility model provides a technical scheme that its technical problem adopted is:

the anti-withdrawal screw rod connecting device comprises a screw rod, a movable shell and a fixed shell; the screw comprises a screw head and a cylinder; the cylinder is arranged on the screw head, and a cylindrical section, a polygonal cylinder section and a threaded section are sequentially arranged on the cylinder along the direction departing from the screw head; a round hole matched with the cylindrical section is arranged in the movable shell, and a polygonal through hole matched with the polygonal cylindrical section is arranged in the fixed shell; the first washer is arranged on the cylindrical section, and the fixing nut is matched with the threaded section; the first gasket is arranged between the movable shell and the screw head, and the fixed nut is tightly propped against the side end of the fixed shell; after the assembly, the movable shell is tightly attached to the fixed shell and the first gasket.

The anti-withdrawal screw rod connecting device of the utility model also comprises a movable shell and a fixed shell; the movable shell and the fixed shell are respectively arranged in the movable shell and the fixed shell; the movable shell and the fixed shell are respectively provided with a first counter bore for mounting a screw head and a second counter bore for mounting a fixed nut, and the bottoms of the first counter bore and the second counter bore are respectively provided with a through hole for the cylindrical section and the thread section to pass through; the tail ends of the fixed shell and the movable shell which deviate from each other are fixedly connected with the inner walls of the fixed shell and the movable shell respectively.

Prevent moving back lead screw connecting device, wherein, the one end that the movable shell is close to the set casing is equipped with the recess, the internal diameter of recess is the same with the external diameter of set casing, the one end nestification that the set casing is close to the movable shell is in the recess.

The anti-withdrawal screw rod connecting device of the utility model is characterized in that one end of the movable shell close to the fixed shell is provided with a ring groove, and one end of the fixed shell close to the movable shell is provided with a ring-shaped bulge corresponding to the ring groove; the annular bulge is nested in the annular groove.

The anti-retreat screw rod connecting device of the utility model also comprises a reinforcing block; the reinforcing block is fixedly arranged between the inner wall of the movable shell and the outer wall of the movable shell and between the inner wall of the fixed shell and the outer wall of the fixed shell.

Prevent moving back lead screw connecting device, wherein, movable shell and fixed shell all are the hemisphere, movable shell and fixed shell form a spherical shell through annular bulge and ring channel cooperation.

The anti-withdrawal screw rod connecting device of the utility model also comprises a fixed arm and a movable arm; the edge of the top end of the fixed arm is provided with a lower groove matched with the spherical shell; the edge of the bottom end of the movable arm is provided with an upper groove matched with the spherical shell; the side walls of the upper groove and the lower groove are respectively provided with an opening for the spherical shell to pass through.

Prevent moving back lead screw connecting device, wherein, fixed shell is fixed to be set up in the lower groove, the movable housing is fixed to be set up in the upper groove.

Prevent moving back lead screw connecting device, wherein, still including setting up the second packing ring in the screw thread section, the second packing ring sets up between fixation nut and set casing.

Prevent moving back lead screw connecting device, wherein, still including first blanking cover and the second blanking cover of the first counter bore of cooperation and second counter bore respectively.

The beneficial effects of the utility model reside in that: the utility model discloses a connecting device with prevent moving back a function rotates at the movable shell and sets up in the cylinder section, and the screw rod is fixed in the multilateral hole the inside in the set casing, and the screw rod is fixed not rotate, and then the nut also does not rotate to prevent that the nut from taking place to move back a phenomenon because of the time is not hard up for a long time, this utility model device simple structure has solved the defect that prior art exists well.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the drawings:

fig. 1 is an explosion diagram of the anti-retreat screw rod connecting device of the utility model.

Fig. 2 is the appearance schematic diagram of the spherical shell of the anti-receding screw rod connecting device of the utility model.

Fig. 3 is a schematic sectional view of the spherical shell of the anti-back screw rod connecting device of the present invention.

Fig. 4 is a schematic view of the connection between the fixed arm and the movable arm of the anti-back screw rod connection device of the present invention.

Fig. 5 is a schematic view of the rotation of the fixed arm and the movable arm of the anti-back screw rod connecting device of the present invention.

Fig. 6 is the schematic view of the partial section after the installation of the anti-back screw rod connecting device of the utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the present invention.

The anti-withdrawing screw rod connecting device of the preferred embodiment of the utility model, as shown in fig. 1-6, comprises a screw rod 101, a movable shell 15 and a fixed shell 5; the screw 101 is characterized by comprising a screw head 14 and a cylinder 100; the cylinder 100 is arranged on the screw head 14, and a cylindrical section 13, a polygonal cylinder section 12 and a threaded section 11 are sequentially arranged on the cylinder 100 along the direction departing from the screw head 14; a round hole 8 matched with the cylindrical section 13 is arranged in the movable shell 15, and a polygonal through hole 4 matched with the polygonal cylindrical section 12 is arranged in the fixed shell 5; the fixing device also comprises a first gasket 10 arranged on the cylindrical section 13 and a fixing nut 1 matched with the threaded section 11; the first gasket 10 is arranged between the movable shell 15 and the screw head 14, and the fixed nut 1 abuts against the side end of the fixed shell 5; after the assembly, the movable shell 15 is tightly attached to the fixed shell 5 and the first gasket 10, the utility model discloses a device simple structure has solved the defect that prior art exists well.

Preferably, the device also comprises a movable shell 6 and a fixed shell 3; the movable shell 15 and the fixed shell 5 are respectively arranged in the movable shell 6 and the fixed shell 3; a first counter bore 22 for mounting the screw head 14 and a second counter bore 16 for mounting the fixing nut 1 are respectively arranged on the movable shell 6 and the fixed shell 3, and through holes for the cylindrical section 13 and the threaded section 11 to pass through are respectively arranged at the bottoms of the first counter bore 22 and the second counter bore 16; the tail ends of the fixed shell 5 and the movable shell 15 which deviate from each other are fixedly connected with the inner walls of the fixed shell 3 and the movable shell 6 respectively, so that the movable shell 15 and the fixed shell 3 are more convenient to install.

Preferably, one end of the movable shell 15, which is close to the fixed shell 5, is provided with a groove 7, the inner diameter of the groove 7 is the same as the outer diameter of the fixed shell 5, and one end of the fixed shell 5, which is close to the movable shell 15, is nested in the groove 7, so that the rotation of the movable shell 15 is more stable.

Preferably, one end of the movable shell 6 close to the fixed shell 3 is provided with an annular groove 17, and one end of the fixed shell 3 close to the movable shell 6 is provided with an annular bulge 18 corresponding to the annular groove 17; the annular projection 18 is nested in the annular groove 17, ensuring that the movable housing 6 does not tilt during operation.

Preferably, a reinforcing block 9 is also included; the reinforcing block 9 is fixedly arranged between the inner wall of the movable shell 6 and the outer wall of the movable shell 15 and between the inner wall of the fixed shell 3 and the outer wall of the fixed shell 5, so that the firmness of the movable shell 15 and the fixed shell 5 is improved, and the service life is longer.

Preferably, the movable shell 6 and the fixed shell 3 are both hemispherical, and the movable shell 6 and the fixed shell 3 form a spherical shell 201 through the matching of the annular protrusion 18 and the annular groove 17, so that the appearance is attractive.

Preferably, a fixed arm 19 and a movable arm 20 are also included; the edge of the top end of the fixing arm 19 is provided with a lower groove (not shown) which is matched with the spherical shell 201; the edge of the bottom end of the movable arm 20 is provided with an upper groove (not shown) which is matched with the spherical shell 201; the side walls of the upper and lower grooves are provided with openings (not shown) for the spherical housing to pass through, respectively, so as to increase the rotation angle of the movable arm 20 and the fixed arm 19.

Preferably, the fixed housing 3 is fixedly arranged in the lower groove, and the movable housing 6 is fixedly arranged in the upper groove, so that the attaching degree of the fixed arm 19 and the movable arm 20 is increased, and the occupied space of the device is reduced.

Preferably, the fixing device further comprises a second washer 2 arranged on the threaded section 11, wherein the second washer 2 is arranged between the fixing nut 1 and the fixing shell 5, and the fixing shell 5 is prevented from being worn by the fixing nut 1.

Preferably, the device also comprises a first blocking cover 21 and a second blocking cover 23 which are respectively matched with the first counter bore 22 and the second counter bore 16, so that the outer surfaces of the two shells are smooth and are prevented from being scratched.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. A anti-withdrawal screw rod connecting device comprises a screw rod, a movable shell and a fixed shell; the screw is characterized by comprising a screw head and a cylinder; the cylinder is arranged on the screw head, and a cylindrical section, a polygonal column section and a threaded section are sequentially arranged on the cylinder along the direction departing from the screw head; a round hole matched with the cylindrical section is formed in the movable shell, and a polygonal through hole matched with the polygonal cylindrical section is formed in the fixed shell; the first washer is arranged on the cylindrical section, and the fixing nut is matched with the threaded section; the first gasket is arranged between the movable shell and the screw head, and the fixed nut abuts against the side end of the fixed shell; after assembly, the movable shell is tightly attached to the fixed shell and the first gasket.

2. The anti-backsliding screw rod connecting device according to claim 1, further comprising a movable housing and a fixed housing; the movable shell and the fixed shell are respectively arranged in the movable shell and the fixed shell; a first counter bore for mounting the screw head and a second counter bore for mounting the fixing nut are respectively formed in the movable shell and the fixed shell, and through holes for the cylindrical section and the threaded section to pass through are respectively formed in the bottoms of the first counter bore and the second counter bore; the tail ends of the fixed shell and the movable shell which deviate from each other are fixedly connected with the inner walls of the fixed shell and the movable shell respectively.

3. The anti-withdrawal screw rod connecting device according to claim 1, wherein a groove is formed at one end of the movable shell close to the fixed shell, the inner diameter of the groove is the same as the outer diameter of the fixed shell, and one end of the fixed shell close to the movable shell is nested in the groove.

4. The anti-withdrawal screw rod connecting device according to claim 2, wherein an annular groove is formed at one end of the movable shell close to the fixed shell, and an annular protrusion is formed at one end of the fixed shell close to the movable shell, corresponding to the annular groove; the annular bulge is nested in the annular groove.

5. The withdrawal prevention screw connecting device according to claim 2, further comprising a reinforcing block; the reinforcing block is fixedly arranged between the inner wall of the movable shell and the outer wall of the movable shell, and between the inner wall of the fixed shell and the outer wall of the fixed shell.

6. The anti-withdrawal screw rod connecting device according to claim 4, wherein the movable housing and the fixed housing are both hemispherical, and the movable housing and the fixed housing are matched with each other through the annular protrusion and the annular groove to form a spherical housing.

7. The anti-backsliding screw connection according to claim 6, further comprising a fixed arm and a moveable arm; the edge of the top end of the fixed arm is provided with a lower groove matched with the spherical shell; the edge of the bottom end of the movable arm is provided with an upper groove matched with the spherical shell; and openings for the spherical shell to pass through are respectively arranged on the side walls of the upper groove and the lower groove.

8. The anti-backsliding screw connection according to claim 7, wherein said stationary housing is fixedly disposed within said lower groove and said movable housing is fixedly disposed within said upper groove.

9. The anti-backsliding screw connection of claim 1, further comprising a second washer disposed on said threaded section, said second washer disposed between said retaining nut and said retaining housing.

10. The anti-withdrawal screw connecting device according to claim 2, further comprising a first cap and a second cap that fit the first counterbore and the second counterbore, respectively.