CN203560257U - Expansion type threaded connection structure - Google Patents
Expansion type threaded connection structure Download PDFInfo
- Publication number
- CN203560257U CN203560257U CN201320606654.XU CN201320606654U CN203560257U CN 203560257 U CN203560257 U CN 203560257U CN 201320606654 U CN201320606654 U CN 201320606654U CN 203560257 U CN203560257 U CN 203560257U
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- China
- Prior art keywords
- expansion
- linkage structure
- threaded connection
- screw thread
- connection structure
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Abstract
An expansion type threaded connection structure comprises a nut component and an expansion bolt, wherein the nut component comprises a fixed seat, two symmetrical movable blocks and a sleeve; the lower part of the fixed seat is a cylinder; a threaded hole in screw joint with the expansion bolt is formed in the center of the cylinder; an open slot is formed in the fixed seat; the fixed seat is positioned in the sleeve; a semicircular expansion block is arranged at the upper part of each movable block; a push plate is arranged at the lower part of the expansion block; the two movable blocks are matched; the push plates at the lower parts of the movable blocks are positioned in the open slots; the push plates can move along the open slots. Through the adoption of the expansion type threaded connection structure, the screw-joint hollow cavity in the auto industry can be detached integrally, and the expansion type threaded connection structure has the characteristics that the maintenance is convenient, and the threaded connection part can be replaced and reused. In addition, the nut is not required to be welded or riveted in advance, so that one processing workstation can be decreased, and the production tempo is increased. The expansion type threaded connection structure is also suitable for screw joint of closed cavity structures or semi-closed cavity structures in other industries and parts of which the inner side is not easily provided with nuts.
Description
Technical field
The utility model relates to a kind of link, is particularly applicable to the expansion screw thread linkage structure that automotive body and other structural members are spirally connected.
Background technique
Being threaded is a kind of of automotive body sheet metal structural and other structural member Placements, in the automobile making stage, conventionally adopts the sheet metal structural being spirally connected, and is all that assembling or welding be not when complete, to panel beating welding or riveting nut, so that later stage assembling bolt.In automobile manufacturing process, a large factor that affects cost is productive temp, with the mode set screw nut that welds or rivet, must on production line, insert a station, can have influence on productive temp like this, and near welded nut, solder joint is difficult for arranging.After nut fixedly completes, sometimes because accidentalia causes that built-in nut drops, or because being dismounted for multiple times bolt causes threaded connector stripped thread, these situations are the more difficult nut of reinstalling all.Moreover the nut of welding or riveted joint, once remove operating difficulties because of certain reason, causes very large inconvenience to later maintenance or maintenance.
Model utility content
The purpose of this utility model is the drawback for prior art, provide after a kind of nut insert, expansion screw thread linkage structure that threaded connector can be installed easily or remove.
Problem described in the utility model realizes with following technical proposals:
A kind of expansion screw thread linkage structure, specialization is, it consists of nut assembly and EXPANSION ANCHOR BOLTS, described nut assembly comprises fixed base, movable block and sleeve, fixed base bottom is cylindrical body, cylindrical body center is provided with the tapped hole being spirally connected with EXPANSION ANCHOR BOLTS, and fixed base is provided with opening slot, and fixed seating is in sleeve; Described movable block is symmetrical arranged two, and each movable block top is semiorbicular expansion block, and expansion block bottom is provided with push pedal, and two movable blocks are involutory, its underpart push pedal is positioned at opening slot, and each push pedal can be moved along opening slot.
Above-mentioned expanding screw connection structure, described expanding screw tightening latch consists of the spiral section being spirally connected successively, expansion arc and screw rod body, and described spiral section is provided with outside thread, and described expansion arc is cone shape, and described screw rod body is provided with outside thread.
Above-mentioned expansion screw thread linkage structure, described nut assembly also comprises two sections of springs, and two spring symmetries are arranged in opening slot, and one end of spring presses push pedal, and the other end presses cylinder inboard wall.
Above-mentioned expansion screw thread linkage structure, described fixed base is spirally connected with sleeve or interference fit is connected.
Above-mentioned expansion screw thread linkage structure, described screw rod body top is provided with clamp face.
Above-mentioned expansion screw thread linkage structure, the Circularhole diameter that described two expansion blocks are combined to form mates with the diameter of EXPANSION ANCHOR BOLTS spiral section.
The problem that the utility model need be inserted in advance for existing plates of automobile structure threaded connector nut is improved, and has designed a kind of expansion screw thread linkage structure.This structure comprises nut assembly and expanding screw tightening latch, and nut assembly is provided with and can leans out movable block.When making, automobile metal plate work only need process in advance nut mounting hole, assembling type is inserted nut assembly in nut bore again, screws in expanding screw tightening latch, and movable block is softened, be pressed in nut bore, solved be thus spirally connected mode nut of tradition and be difficult to the difficult problem that the later stage inserts.Counterrotating expanding screw tightening latch during above-mentioned expansion screw thread linkage structure dismounting, movable block is closed under the effect of spring force, and nut assembly can be pulled down.Adopt the utility model to realize the automobile industry cavity structure Whole-dismountable that is spirally connected, have easy to maintenance, the feature that threaded connector is replaceable, can reuse.In addition,, due to without welding in advance or riveting nut, can reduce by a processing stations, speed production beat.The utility model is equally applicable to other industry closed cavities or semi-closed cavity structure and is difficult for component at the inner side mounting nuts mode that is spirally connected.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that the utility model is used view;
Fig. 3 is the schematic diagram of base;
Fig. 4 is the schematic diagram of movable block.
In figure, each list of reference numerals is: 1, expanding screw tightening latch, 1-1, clamp face, 1-2, screw rod body, 1-3, expansion arc, 1-4, spiral section, 2, movable block, 2-1, expansion block, 2-2, push pedal, 3, spring, 4, sleeve, 5, base, 5-1, tapped hole, 5-2, opening slot, 6, sheet metal part.
Embodiment
Referring to Fig. 1, Fig. 3, Fig. 4, the utility model consists of nut assembly and EXPANSION ANCHOR BOLTS, and described nut assembly comprises fixed base 5, movable block 2, sleeve 4 and spring 3.Fixed base bottom is cylindrical body, cylindrical body center is provided with the tapped hole 5-1 being spirally connected with expanding screw tightening latch, fixed base is provided with opening slot 5-2, fixed base is arranged in cylindrical shell, the cylindrical body external diameter of fixed base mates with the internal diameter of cylindrical shell, between this cylindrical body and cylindrical shell, by screw thread or interference fit, forms a fixed connection.Described movable block 2 is symmetrical arranged two, and each movable block top is semiorbicular expansion block 2-1, and expansion block bottom is provided with push pedal 2-2, and two movable blocks are involutory, the push pedal of its underpart is positioned at opening slot 5-2, and each push pedal can be moved along opening slot.Spring 3 arranges two sections, and two sections of spring symmetries are arranged in opening slot, and one end of spring presses push pedal, and the other end presses cylinder inboard wall.Described expanding screw tightening latch consists of the spiral section 1-4 being spirally connected successively, expansion arc 1-3 and screw rod body 1-2, and spiral section is provided with the outside thread screwing with tapped hole 5-1, and the external diameter of spiral section mates with the Circularhole diameter that two expansion block 2-1 are combined to form.Expansion arc is cone shape, and the small end of expansion arc is connected with spiral section, and the large end of expansion arc is connected with screw rod body.Screw rod body 1-2 is cylindrical, and screw rod body is provided with the outside thread being spirally connected with external nut, and screw rod body top is provided with clamp face 1-1.
Referring to Fig. 2, when the utility model is used, on sheet metal part 6, process mounting hole in advance, nut assembly is put into mounting hole, then expanding screw tightening latch is passed to nut assembly, the spiral section of expanding screw tightening latch and the tapped hole of base screw, screw-in along with expanding screw tightening latch, two movable blocks 2 are softened, and the upper attachment face of its expansion block is pressed on the inwall of panel beating mounting hole, on screw rod body, other parts and external nut can be installed again.When expansion screw thread linkage structure is dismantled, the counterrotating of expanding screw tightening latch, movable block is closed under the effect of spring force, and nut assembly integral body can take out from nut mounting hole.
Claims (6)
1. an expansion screw thread linkage structure, it is characterized in that, it consists of nut assembly and EXPANSION ANCHOR BOLTS, described nut assembly comprises fixed base (5), movable block (2) and sleeve (4), fixed base bottom is cylindrical body, cylindrical body center is provided with the tapped hole (5-1) being spirally connected with EXPANSION ANCHOR BOLTS, and fixed base is provided with opening slot (5-2), and fixed seating is in sleeve; Described movable block (2) is symmetrical arranged two, and each movable block top is semiorbicular expansion block (2-1), and expansion block bottom is provided with push pedal (2-2), and two movable blocks are involutory, its underpart push pedal is positioned at opening slot, and each push pedal can be moved along opening slot.
2. expansion screw thread linkage structure according to claim 1, it is characterized in that, described expanding screw tightening latch (1) consists of the spiral section being spirally connected successively (1-4), expansion arc (1-3) and screw rod body (1-2), described spiral section is provided with outside thread, described expansion arc is cone shape, and described screw rod body is provided with outside thread.
3. expansion screw thread linkage structure according to claim 2, is characterized in that, described nut assembly also comprises two sections of springs (3), and two spring symmetries are arranged in opening slot, and one end of spring presses push pedal, and the other end presses cylinder inboard wall.
4. expansion screw thread linkage structure according to claim 3, is characterized in that, described fixed base (5) is spirally connected with sleeve (4) or interference fit is connected.
5. expansion screw thread linkage structure according to claim 4, is characterized in that, described screw rod body (1-2) top is provided with clamp face (1-1).
6. expansion screw thread linkage structure according to claim 5, is characterized in that, the Circularhole diameter that described two expansion blocks (2-1) are combined to form mates with the diameter of EXPANSION ANCHOR BOLTS spiral section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606654.XU CN203560257U (en) | 2013-09-29 | 2013-09-29 | Expansion type threaded connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320606654.XU CN203560257U (en) | 2013-09-29 | 2013-09-29 | Expansion type threaded connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203560257U true CN203560257U (en) | 2014-04-23 |
Family
ID=50509980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320606654.XU Expired - Lifetime CN203560257U (en) | 2013-09-29 | 2013-09-29 | Expansion type threaded connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203560257U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438645A (en) * | 2016-08-23 | 2017-02-22 | 无锡市东赫金属制品有限公司 | Tightly fastened bolt-nut assembly |
| CN106641664A (en) * | 2016-12-30 | 2017-05-10 | 芜湖广盈实业有限公司 | Electric appliance fixing rail |
-
2013
- 2013-09-29 CN CN201320606654.XU patent/CN203560257U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438645A (en) * | 2016-08-23 | 2017-02-22 | 无锡市东赫金属制品有限公司 | Tightly fastened bolt-nut assembly |
| CN106641664A (en) * | 2016-12-30 | 2017-05-10 | 芜湖广盈实业有限公司 | Electric appliance fixing rail |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |
|
| CX01 | Expiry of patent term |