CN210949446U - Fastening device - Google Patents
Fastening device Download PDFInfo
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- CN210949446U CN210949446U CN201921220197.4U CN201921220197U CN210949446U CN 210949446 U CN210949446 U CN 210949446U CN 201921220197 U CN201921220197 U CN 201921220197U CN 210949446 U CN210949446 U CN 210949446U
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- fixing part
- fastening device
- sleeve joint
- piece
- connecting rod
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Abstract
The utility model discloses a fastening device, include: the first connecting piece comprises a sleeve joint part, a first fixing part arranged at one end of the sleeve joint part and a second fixing part arranged at the other end of the sleeve joint part; the sleeve joint part is used for being inserted into a connecting hole of a to-be-connected piece, and the first fixing part and the second fixing part are used for respectively abutting against two sides of the to-be-connected piece; the second connecting piece comprises a connecting rod which penetrates through the first connecting piece and a connecting part which is positioned on the same side of the to-be-connected piece as the second fixing part, and the connecting part is embedded in the second fixing part; the second fixing part is formed by the deformation that the first connecting piece and the connecting part are extruded to expand outwards when the connecting rod moves axially towards the first fixing part. The device simple structure can realize the installation of the airtight space section bar that the mounting height is less than 10mm fast, and guarantees to treat that the connecting piece installation back surface is level and smooth.
Description
Technical Field
The utility model relates to a fastener especially relates to a fastener that is suitable for airtight space section bar to use.
Background
Fastener, used for fastening two or more parts (or components), is a general term for a type of mechanical parts used when fastening and connecting into a whole. The fastener has wide application industries including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, molds, hydraulic pressure and the like, can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, instruments, supplies and the like, and is a mechanical basic part which is most widely applied. It features various varieties and specifications, different functions and usages, and very high standardization, serialization and universalization degrees.
In the existing fastener, when a closed section bar is connected, such as an electronic cabinet or an automobile section bar, the installation space in the section bar is small, and the height of one end of the fastener arranged in the section bar is greater than the inner height of the section bar, so that the surface of the section bar is bulged, and the appearance is influenced; or when the requirement on the exposed height of the fastener on the surface of the back plate is high, the existing fastener cannot meet the requirement frequently.
Disclosure of Invention
The utility model aims at providing a fastening device, the device simple structure can realize the limited unilateral installation of mounting height in the airtight space fast, and guarantees to treat that connecting piece installation rear surface is level and smooth, or satisfies the backplate and allows the high condition of outstanding length requirement, and this fastening device installation back is stable difficult not hard up.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a fastening device, comprising: the first connecting piece comprises a sleeve joint part, a first fixing part arranged at one end of the sleeve joint part and a second fixing part arranged at the other end of the sleeve joint part; the sleeve joint part is used for being inserted into a connecting hole of a to-be-connected piece, and the first fixing part and the second fixing part are used for respectively abutting against two sides of the to-be-connected piece;
the second connecting piece comprises a connecting rod which penetrates through the first connecting piece and a connecting part which is positioned on the same side of the to-be-connected piece as the second fixing part, and the connecting part is embedded in the second fixing part;
the second fixing part is formed by the deformation that the first connecting piece and the connecting part are extruded to expand outwards when the connecting rod moves axially towards the first fixing part.
In the above technical solution, the hardness of the second fixing portion is smaller than the hardness of the connecting portion.
In the above technical scheme, one side of the second fixing part, which faces away from the to-be-connected component, is flush with the upper surface of the connecting part.
In the above technical scheme, the sleeve joint part is provided with a polygonal inner hole, and the connecting rod is provided with a polygonal convex body matched with the polygonal inner hole.
In the above technical scheme, the outer side of the sleeve joint part is of a polygonal structure, and the polygonal structure is abutted against the inner wall of the connecting hole.
In the technical scheme, the connecting rod is provided with connecting threads.
In the above technical scheme, the sleeve joint part is provided with a circular inner hole, and the joint of the connecting thread and the circular inner hole is provided with a plurality of straight-line flower teeth.
In the above technical scheme, the outer side of the sleeve joint part and the first fixing part are provided with a plurality of reinforcing ribs facing the side of the to-be-connected piece, and the reinforcing ribs abut against the side face of the to-be-connected piece and the connecting hole.
The other technical scheme is as follows: a fastening device, comprising: the first connecting piece comprises a sleeve joint part and a fixing part which is arranged at one end of the sleeve joint part and extends along the radial direction; the second connecting piece comprises a connecting rod which is arranged on the first connecting piece in a penetrating mode and can move along the axial direction of the first connecting piece and a connecting part arranged on the connecting rod, and the sleeving part is located between the connecting part and the fixing part; one end of the sleeve joint part, which faces the connecting part, can be extruded with the connecting part to generate outward expansion deformation to form a second fixing part when the connecting rod moves axially towards the first fixing part.
A method of installing a fastening device, the member to be connected having opposing first and second sides, comprising the steps of:
the connecting part of the fastening device is penetrated from the first side surface to the second side surface to the first fixing part to be abutted against the first side surface;
moving the connecting part to the first side surface to extrude the first connecting piece to form a second fixing part expanding outwards;
and the connecting part is embedded in the second fixing part, and the second fixing part is propped against the second side surface, so that the installation is completed.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the utility model discloses well first connecting piece is including cup jointing the portion, set up in the first fixed part of cup jointing portion one end and set up in the second fixed part of the cup jointing portion other end, cup jointing portion inserts in the connecting hole of treating the connecting piece, first fixed part and second fixed part are used for respectively with treat that the connecting piece both sides offset, and connecting portion embedded in the second fixed part, the distance of treating connecting piece dorsal part to connecting portion terminal surface has been shortened in the second fixed part with connecting portion embedded, make the installation under this fastener is applicable in the section bar airtight space height is less than 10mm condition, or to the installation under the backplate allows outstanding length requirement high condition.
2. The second fixing part is formed by the deformation that the first connecting piece extrudes with the connecting part to generate outward expansion when the connecting rod moves axially towards the first fixing part, the connecting rod moves towards one side, the fastening device can be installed on one side, and is particularly suitable for the use of closed space section bars.
3. The sleeve joint part is provided with a polygonal inner hole, and the connecting rod is provided with a polygonal convex body matched with the polygonal inner hole; or the sleeve joint part is provided with a circular inner hole, the connecting rod is provided with a connecting thread, and the joint of the connecting thread and the circular inner hole is provided with a plurality of straight-line flower teeth, so that the torsion resistance between the sleeve joint part and the connecting rod can be increased, and the connecting rod can be prevented from rotating in the sleeve joint part.
4. The outer side of the sleeve joint part is designed to be a polygonal structure or the outer side of the sleeve joint part and the first fixing part are provided with a plurality of reinforcing ribs facing the side of the to-be-connected piece, so that the torsion resistance between the fastening device and the to-be-connected piece can be increased, and the fastening device is prevented from rotating in the connecting hole.
Drawings
Fig. 1 is a schematic structural diagram of a fastening device according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a fastening device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a fastening device according to an embodiment of the present invention;
fig. 4 is a schematic view of a fastening state of a fastening device according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a second fastening device according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a third fastening device according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a four-fastening device according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a five-fastening device according to an embodiment of the present invention;
wherein: 1. a first connecting member; 2. a socket joint part; 3. a first fixed part; 4. a second fixed part; 5. a second connecting member; 6. a connecting rod; 7. a connecting portion; 8. a polygonal inner hole; 9. a polygonal convex body; 10. a polygonal structure; 11. connecting threads; 12. a circular inner hole; 13. straight pattern teeth; 14. reinforcing ribs; 15. and (5) connecting the parts to be connected.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
the first embodiment is as follows: referring to fig. 1-4, a fastening device includes: the first connecting piece 1 comprises a sleeve joint part 2, a first fixing part 3 arranged at one end of the sleeve joint part 2 and a second fixing part 4 arranged at the other end of the sleeve joint part 2; the sleeve joint part 2 is used for being inserted into a connecting hole of a to-be-connected piece 15, and the first fixing part 3 and the second fixing part 4 are used for respectively abutting against two sides of the to-be-connected piece 15; the second connecting piece 5 comprises a connecting rod 6 penetrating through the first connecting piece 1 and a connecting part 7 which is positioned on the same side of the to-be-connected piece 15 as the second fixing part 4, and the connecting part 7 is embedded in the second fixing part 4; the second fixing portion 4 is formed by the first connecting member 1 and the connecting portion 7 which are extruded to expand outwards when the connecting rod 6 moves axially towards the first fixing portion 3.
This fastener simple structure, move connecting rod 6 to one side and realize the unilateral installation, be applicable to in the confined space section bar, and form second fixed part 4 after the installation, second fixed part 4 with treat that 15 one sides of connecting piece offset, connecting portion 7 is embedded in second fixed part 4, shortened and treated the distance between 15 dorsal parts of connecting piece to 7 terminal surfaces of connecting portion, make this fastener applicable in the section bar the installation under the confined space height is less than 10mm circumstances, or to the installation under the backplate allows outstanding length requirement height condition.
Referring to fig. 1-4, a fastening device includes: the first connecting piece 1 comprises a sleeve joint part 2 and a fixing part which is arranged at one end of the sleeve joint part 2 and extends along the radial direction; the second connecting piece 5 comprises a connecting rod 6 which is arranged on the first connecting piece 1 in a penetrating mode and can move along the axial direction of the first connecting piece 1 and a connecting part 7 arranged on the connecting rod 6, and the sleeving part 2 is located between the connecting part 7 and the fixing part; one end of the sleeve-joint part 2 facing the connecting part 7 can be extruded with the connecting part 7 to generate outward expansion deformation to form a second fixing part 4 when the connecting rod 6 moves axially towards the first fixing part 3.
The second fixing portion 4 has a hardness smaller than that of the connecting portion 7. The side of the second fixing part 4 facing away from the part 15 to be connected is flush with the upper surface of the connecting part 7 in the fastened state, as shown in fig. 4.
Referring to fig. 1 to 4, the sleeve joint part 2 is provided with a polygonal inner hole 8, and the connecting rod 6 is provided with a polygonal convex body 9 matched with the polygonal inner hole 8. The polygonal inner hole 8 is a hexagonal hole, and the connecting rod 6 is provided with a hexagonal convex body matched with the hexagonal hole. The hexagonal convex body is inserted into the hexagonal hole of the socket part 2 to generate a huge torsion resistance force, and the second connecting piece 5 is prevented from rotating in the first connecting piece 1.
Referring to fig. 1 to 4, a polygonal structure 10 is arranged on the outer side of the sleeve joint part 2, and the polygonal structure 10 abuts against the inner wall of the connecting hole. The polygonal structure 10 is a hexagonal structure.
Referring to fig. 1-4, the connecting rod 6 is provided with a connecting thread 11.
Example two: as shown in fig. 5, a fastening device in this embodiment has a structure substantially similar to that of the first embodiment, except that the socket 2 has a circular inner hole 12, and a plurality of straight-line teeth 13 are provided at the junction of the connecting thread 11 and the circular inner hole 12. The straight-line spline 13 can increase the torsion resistance between the sleeve joint part 2 and the connecting rod 6, and prevent the connecting rod 6 from rotating in the sleeve joint part 2.
Example three: as shown in fig. 6, a fastening device in this embodiment has a structure substantially similar to that of the first embodiment, except that the outer side of the sleeve portion 2 is a circular ring structure, a plurality of reinforcing ribs 14 are disposed on the outer side of the sleeve portion 2 and the first fixing portion 3 toward the to-be-connected component 15, and the reinforcing ribs 14 abut against the side surface of the to-be-connected component 15 and the connecting hole. The provision of the ribs 14 increases the torque resistance between the fastening device and the connector to prevent rotation of the fastening device within the attachment bore.
Example four: as shown in fig. 7, a fastening device in this embodiment has a structure substantially similar to that of the embodiment, except that the outer side of the sleeve portion 2 is a circular ring structure, a plurality of reinforcing ribs 14 are disposed on the outer side of the sleeve portion 2 and the first fixing portion 3 toward the to-be-connected component 15, and the reinforcing ribs 14 abut against the side surface of the to-be-connected component 15 and the connecting hole. The provision of the ribs 14 increases the torque resistance between the fastening device and the connector to prevent rotation of the fastening device within the attachment bore.
The specific installation method of the fastening device comprises the following steps:
penetrating the second connecting piece 5 into the first connecting piece 1, and pressing the first connecting piece 1 and the second connecting piece 5 by using a pressing tool;
a connecting hole is formed in the to-be-connected piece 15;
the connecting part 7 of the fastening device is penetrated to the first fixing part 3 from the first side surface to the second side surface of the connecting hole to be abutted against the first side surface;
connecting the connecting part 7 with the connecting rod 6 by using a rivet pulling tool, moving the connecting part towards the first side surface to extrude the first connecting part 1 to form a second fixing part 4 expanding outwards;
and the connecting part 7 is embedded in the second fixing part 4, and the second fixing part 4 is abutted against the second side surface, so that the installation is completed.
When the to-be-connected piece 15 is an airtight section bar, the connecting part 7 is arranged in the airtight section bar and is not in contact with the airtight section bar, so that the surface of the section bar is prevented from bulging.
Example five: as shown in fig. 8, a fastening device, in this embodiment, has a structure substantially similar to that of the first embodiment, except that the connecting rod 6 is a polished rod. The installation can be carried out by utilizing a pressing mode, and diversified installation modes and installation requirements are met.
When the connecting rod 6 is a polished rod, the specific installation method of the fastening device comprises the following steps:
penetrating the second connecting piece 5 into the first connecting piece 1, and pressing the first connecting piece 1 and the second connecting piece 5 by using a pressing tool;
a connecting hole is formed in the to-be-connected piece 15;
the connecting part 7 of the fastening device is penetrated to the first fixing part 3 from the first side surface to the second side surface of the connecting hole to be abutted against the first side surface;
applying pressure to the connecting part 7 by using a pressure riveting tool, moving the connecting part 7 towards the first side surface to extrude the first connecting part 1 to form a second fixing part 4 expanding outwards;
and the connecting part 7 is embedded in the second fixing part 4, and the second fixing part 4 is abutted against the second side surface, so that the installation is completed.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. A fastening device, characterized by: the method comprises the following steps:
the first connecting piece comprises a sleeve joint part, a first fixing part arranged at one end of the sleeve joint part and a second fixing part arranged at the other end of the sleeve joint part; the sleeve joint part is used for being inserted into a connecting hole of a to-be-connected piece, and the first fixing part and the second fixing part are used for respectively abutting against two sides of the to-be-connected piece;
the second connecting piece comprises a connecting rod which penetrates through the first connecting piece and a connecting part which is positioned on the same side of the to-be-connected piece as the second fixing part, and the connecting part is embedded in the second fixing part;
the second fixing part is formed by the deformation that the first connecting piece and the connecting part are extruded to expand outwards when the connecting rod moves axially towards the first fixing part.
2. The fastening device of claim 1, wherein: the hardness of the second fixing part is less than that of the connecting part.
3. The fastening device of claim 1, wherein: one side, back to the to-be-connected piece, of the second fixing part is flush with the upper surface of the connecting part.
4. The fastening device of claim 1, wherein: the cup joint portion is equipped with the polygon hole, be equipped with on the connecting rod with the polygon convex body of polygon hole looks adaptation.
5. The fastening device of claim 1, wherein: the outer side of the sleeving part is of a polygonal structure, and the polygonal structure is abutted to the inner wall of the connecting hole.
6. The fastening device of claim 1, wherein: and the connecting rod is provided with connecting threads.
7. The fastening device of claim 6, wherein: the socket joint portion is provided with a circular inner hole, and the joint of the connecting thread and the circular inner hole is provided with a plurality of straight-line flower teeth.
8. The fastening device of claim 1, wherein: the outer side of the sleeve joint part and the side, facing the to-be-connected part, of the first fixing part are provided with a plurality of reinforcing ribs, and the reinforcing ribs abut against the side face of the to-be-connected part and the connecting hole.
9. A fastening device, characterized by: the method comprises the following steps:
the first connecting piece comprises a sleeve joint part and a fixing part which is arranged at one end of the sleeve joint part and extends along the radial direction;
the second connecting piece comprises a connecting rod which is arranged on the first connecting piece in a penetrating mode and can move along the axial direction of the first connecting piece and a connecting part arranged on the connecting rod, and the sleeving part is located between the connecting part and the fixing part;
one end of the sleeve joint part, which faces the connecting part, can be extruded with the connecting part to generate outward expansion deformation to form a second fixing part when the connecting rod moves axially towards the first fixing part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921220197.4U CN210949446U (en) | 2019-07-31 | 2019-07-31 | Fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921220197.4U CN210949446U (en) | 2019-07-31 | 2019-07-31 | Fastening device |
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| Publication Number | Publication Date |
|---|---|
| CN210949446U true CN210949446U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921220197.4U Active CN210949446U (en) | 2019-07-31 | 2019-07-31 | Fastening device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303087A (en) * | 2019-07-31 | 2021-02-02 | 宾科精密部件(中国)有限公司 | Fastening device and mounting method thereof |
-
2019
- 2019-07-31 CN CN201921220197.4U patent/CN210949446U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112303087A (en) * | 2019-07-31 | 2021-02-02 | 宾科精密部件(中国)有限公司 | Fastening device and mounting method thereof |
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