CN209671366U - Compound expansion connector - Google Patents
Compound expansion connector Download PDFInfo
- Publication number
- CN209671366U CN209671366U CN201920102352.6U CN201920102352U CN209671366U CN 209671366 U CN209671366 U CN 209671366U CN 201920102352 U CN201920102352 U CN 201920102352U CN 209671366 U CN209671366 U CN 209671366U
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- Prior art keywords
- bulge
- expansion sleeve
- connecting rod
- expansion
- ontology
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Abstract
The utility model relates to a kind of compound expansion connectors, including connecting rod and cover the expansion sleeve outside connecting rod, expansion sleeve is the tube structure of inner hollow, the first end of expansion sleeve is provided with the first bulge, second end is provided with the second bulge, first bulge is distributed along the circumference at least one first longitudinal direction notch, second bulge is distributed along the circumference at least one second longitudinal direction notch, the inner hole wall of first bulge is provided with internal screw thread, the first end of connecting rod is provided with the threaded portion for strutting the first bulge, threaded portion is provided with the external screw thread to match with the internal screw thread of the first bulge, the second end of connecting rod is provided with the head for strutting the second bulge.The utility model is compared to the prior art advantageously: structure is simple, the firm and reliable connection of the first bulge, the second bulge and two pieces of planks；Concealed installation, it is very beautiful for furniture；It installs simple and fast, is easy to install and remove, repeated multiple times can dismount.
Description
Technical field
The utility model relates to technical field of fastening more particularly to a kind of compound expansion connectors.
Background technique
The eccentric connector for plate fitment connection is generally by eccentric wheel, connecting rod, embedded nut group in the prior art
At, also known as three-in-one connector, as shown in Figure 1.The specific radian using the heart in the minds of eccentric wheel bottom torsion bent angle stray circle,
When passing through the plus screw slot of gimlet rotation eccentric wheel, the connecting rod being stuck in radian can pull to eccentric wheel along radian
Center, to make connecting rod tense the distance between eccentric wheel and embedded nut, to make to connect between plate and plate firm.
Traditional eccentric connector, since there are gap, bias between the connecting plate inner hole where connecting rod and eccentric wheel
After wheel locking, connecting plate can shake, and will cause loosen over time.And the number of parts of eccentric connector is more,
Structure is complicated, increases the complexity of installation.
It is therefore desirable to be improved.
Utility model content
In view of the deficienciess of the prior art, that the purpose of this utility model is to provide a kind of structures is simple, be connected firmly,
The compound expansion connector being easy to install and remove.
To achieve the goals above, following technical solution is provided:
A kind of compound expansion connector, which is characterized in that including connecting rod and cover the expansion sleeve outside connecting rod, expand
Casing is the tube structure of inner hollow, and the first end of expansion sleeve is provided with the first bulge, and it is swollen that second end is provided with second
Swollen portion,
First bulge is distributed along the circumference at least one first longitudinal direction notch, axis of the first longitudinal direction notch along expansion sleeve
To extension,
Second bulge is distributed along the circumference at least one second longitudinal direction notch, axis of the second longitudinal direction notch along expansion sleeve
To extension,
The inner hole wall of first bulge is provided with internal screw thread, and the first end of connecting rod is provided with for strutting the first bulge
Threaded portion, threaded portion is provided with the external screw thread to match with the internal screw thread of the first bulge, and the second end of connecting rod is provided with
For strutting the head of the second bulge.
Preferably, the inner hole of first bulge includes cylindrical hole and conical bore, cylindrical hole, conical bore and expansion sleeve
Pipe coaxial arrangement, conical bore are located at the outside of cylindrical hole, and the internal screw thread of the first bulge extends to conical bore, circular cone by cylindrical hole
The aperture in hole is gradually reduced along the direction that connecting rod is screwed into expansion sleeve, and first longitudinal direction notch is evenly arranged on conical bore border.
Preferably, the outer diameter on the head of the connecting rod is gradually reduced along the direction that connecting rod is screwed into expansion sleeve, the
The inner hole of two bulges and the shape on head match.
Preferably, the mounting hole of polygon is provided on the end face on the head.
Preferably, which further includes the rod-like element of L-type, the cross sectional shape and mounting hole of outer profile
Match.
Preferably, the expansion sleeve includes the first noumenon and the second ontology of two pairings, the first noumenon and second
Ontology is connected as one by buckle structure.
Preferably, the first noumenon of the expansion sleeve and the second body construction are identical, the first noumenon, the second ontology
Buckle is provided on two sides, buckle includes spliced eye and inserted tooth, and buckle there are 2 pairs, and spliced eye and inserted tooth respectively correspond setting
The first noumenon, the second ontology two sides on, the inserted tooth of the first noumenon can be embedded in the spliced eye of the second ontology, the second ontology
Inserted tooth can be embedded in the spliced eye of the first noumenon, be connected as one the first noumenon of expansion sleeve and the second ontology.
Preferably, the end of the inserted tooth is inversed hook like.
Preferably, the middle part of the expansion sleeve is equipped with pars contractilis, and pars contractilis is in corrugated tube shape.
Preferably, the pars contractilis is equipped at least one third longitudinal cut axially extending along expansion sleeve, third
Longitudinal cut is uniformly distributed along the circumferential direction of bulge.
After adopting the above structure, the utility model is compared to the prior art advantageously: structure is simple, and first is swollen
Swollen portion, the second bulge and two pieces of planks firm and reliable connection；Concealed installation, it is very beautiful for furniture；Installation letter
It is single quick, it is easy to install and remove, repeated multiple times can dismount.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of eccentric connector in the prior art；
Fig. 2 is the structural schematic diagram of the utility model compound expansion connector；
Fig. 3 is exploded pictorial Fig. 1 of the utility model compound expansion connector；
Fig. 4 is exploded pictorial Fig. 2 of the utility model compound expansion connector；
Fig. 5 is the scheme of installation of the utility model compound expansion connector.
Specific embodiment
The embodiments of the present invention is described in further detail with reference to the accompanying drawing.
Embodiment one, referring to figs. 1 to Fig. 5, compound expansion connector provided by the utility model includes connecting rod 1 and covers
Expansion sleeve 2 outside connecting rod 1, expansion sleeve 2 are the tube structure of inner hollow, and the first end of expansion sleeve 2 is provided with the
One bulge 21, second end are provided with the second bulge 22, and the first bulge 21 is distributed along the circumference at least one first longitudinal direction
Notch 210, first longitudinal direction notch 210 is axially extending along expansion sleeve 2, and first longitudinal direction notch 210 divides the first bulge 21
It is cut into the expanding block that can be expanded outward, the second bulge 22 is distributed along the circumference at least one second longitudinal direction notch 220, and second
Longitudinal cut 220 is axially extending along expansion sleeve 2, and the second bulge 22 is divided by second longitudinal direction notch 220 can be outside
The expanding block of expansion.The inner hole wall of first bulge 21 is provided with internal screw thread, and the first end of connecting rod 1 is provided with for strutting
The threaded portion 11 of one bulge, threaded portion 11 are provided with the external screw thread 110 to match with the internal screw thread 210 of the first bulge 21,
The second end of connecting rod 1 is provided with the head 12 for strutting the second bulge 22.
The inner hole 200 of first bulge include cylindrical hole 2001 and conical bore 2002, cylindrical hole 2001, conical bore 2002 with
Expansion sleeve 2 is coaxially disposed, and conical bore 2002 is located at the outside of cylindrical hole 2001, and the internal screw thread of the first bulge 21 is by cylindrical hole
2001 extend to conical bore 2002, and the aperture of conical bore 2002 is gradually reduced along the direction that connecting rod 1 is screwed into expansion sleeve 2, institute
It states first longitudinal direction notch 210 and is evenly arranged on 2002 border of conical bore.
The inner wall of expansion sleeve be located at the first bulge 21 inside be equipped with circular hole clipping hole 25, the internal diameter of circular hole clipping hole 25 with
The outer diameter of connecting rod 1 matches, and circular hole clipping hole 25 plays the role of positioning.
The head 12 of the connecting rod is in a circular table shape, the outer diameter on head 12 along connecting rod 1 be screwed into the direction of expansion sleeve 2 by
Tapered small, the inner hole of the second bulge 22 and the shape on head 12 match.
It is provided with mounting hole 10 on the end face on the head 12, which further includes the rod-like element of L-type,
The cross sectional shape of outer profile matches with mounting hole 10.Preferably, hexagonal installation is provided on the end face on the head 12
Hole 10.Compound expansion connector further includes Allen key 3, and Allen key 3 is the hexagon rod-like element of L-type, cross sectional shape and installation
Hole 10 matches.The outer profile section of mounting hole 10 and Allen key 3 is also designed to other polygons or star-like or rice word
Type etc., as long as connecting rod can be twisted.
The expansion sleeve 2 includes the first noumenon 201 and the second ontology 202 of two pairings, the first noumenon 201 and second
Ontology 202 is connected as one by buckle structure.
The first noumenon 201 of the expansion sleeve 2 is identical with 201 structure of the second ontology, the first noumenon 201, the second ontology
Buckle structure is provided on 202 two sides, buckle structure includes buckle, and the position of buckle can be set in expansion sleeve 2
One end or the middle part of expansion sleeve 2 is set.
The buckle includes spliced eye 204 and inserted tooth 203, and buckle has 2 pairs, and spliced eye 204 and inserted tooth 203 are respectively corresponded and set
Set the first noumenon 201, the second ontology 202 two sides on, the inserted tooth 203 of the first noumenon 201 can be embedded in the second ontology
The inserted tooth of spliced eye 204, the second ontology 202 can be embedded in the spliced eye 204 of the first noumenon 201, make the first of expansion sleeve
Body 201 and the second ontology 202 are connected as one.
The end of the inserted tooth 203 is inversed hook like, prevents inserted tooth 203 from loosening after inserted tooth 203 is embedded in spliced eye 204.
The middle part of the expansion sleeve 2 is equipped with pars contractilis 23, and pars contractilis 23 is in corrugated tube shape, and pars contractilis makes plank and plank
Between connection it is stronger.
The pars contractilis 23 is equipped at least one third longitudinal cut 230 axially extending along expansion sleeve 2, and third is longitudinal
Notch 230 is uniformly distributed along the circumferential direction of bulge 23, when mutually being tightened between connecting rod and expansion sleeve, third longitudinal cut
230 make 23 radial outward expansion of pars contractilis, connect stronger.
The application method and working principle of compound expansion connector are as follows:
1, it is first punched on needing the plank a, the plank b that connect；
2, by expansion sleeve pipe sleeve 2 outside connecting rod 1, the cylindrical hole 2001 of the threaded portion of connecting rod 1 and expansion sleeve 2 at this time
The internal screw thread at place is with respect to position；
3, make the mounting hole of compound expansion connector one end insertion plank a, the other end is embedded in the mounting hole of plank b, uses
Allen key passes through the hexagon mounting hole 10 on plank b alignment connecting rod head；
4, it twists Allen key and drives connecting rod rotation；
5, the gradient on connecting rod head 12 drives the second bulge 22 expansion locking plank b；
6, connecting rod 1 continues to be screwed into the swollen expansion of the first bulge 21 locking plank a in top；
7, connecting rod 1, which continues to be screwed into, drives the pars contractilis 23 of expansion sleeve 2 to be stretched, in the reply masterpiece of pars contractilis 23
Two pieces of plank contractions can be close under, also, when mutually being tightened between connecting rod 1 and expansion sleeve 2,23 axis of pars contractilis
To compression, 230 distending of third longitudinal cut makes 23 radial outward expansion of pars contractilis, fills the sky between expansion sleeve and plank
Gap connects stronger.
The beneficial effects of the utility model are:
(1) structure is simple, the firm and reliable connection of the first bulge, the second bulge and two pieces of planks；
(2) concealed installation, it is very beautiful for furniture；
(3) installation is simple and fast, is easy to install and remove, repeated multiple times can dismount.
The above content is only the preferred embodiment of the utility model, for those of ordinary skill in the art, according to this reality
With novel thought, there will be changes in the specific implementation manner and application range, and the content of the present specification should not be construed as
Limitations of the present invention.
Claims (10)
1. a kind of compound expansion connector, which is characterized in that including connecting rod and cover the expansion sleeve outside connecting rod, expansion sleeve
Pipe is the tube structure of inner hollow, and the first end of expansion sleeve is provided with the first bulge, and second end is provided with the second expansion
Portion,
First bulge is distributed along the circumference at least one first longitudinal direction notch, and first longitudinal direction notch prolongs along the axial direction of expansion sleeve
It stretches,
Second bulge is distributed along the circumference at least one second longitudinal direction notch, and second longitudinal direction notch prolongs along the axial direction of expansion sleeve
It stretches,
The inner hole wall of first bulge is provided with internal screw thread, and the first end of connecting rod is provided with the spiral shell for strutting the first bulge
Line portion, threaded portion are provided with the external screw thread to match with the internal screw thread of the first bulge, and the second end of connecting rod, which is provided with, to be used for
Strut the head of the second bulge.
2. compound expansion connector according to claim 1, which is characterized in that the inner hole of first bulge includes cylinder
Hole and conical bore, cylindrical hole, conical bore and expansion sleeve are coaxially disposed, and conical bore is located at the outside of cylindrical hole, the first bulge
Internal screw thread conical bore is extended to by cylindrical hole, the aperture of conical bore is gradually reduced along the direction that connecting rod is screwed into expansion sleeve,
First longitudinal direction notch is evenly arranged on conical bore border.
3. compound expansion connector according to claim 1, which is characterized in that the outer diameter on the head of the connecting rod is along connection
The direction that bar is screwed into expansion sleeve is gradually reduced, and the inner hole of the second bulge and the shape on head match.
4. compound expansion connector according to claim 1, which is characterized in that be provided with installation on the end face on the head
Hole.
5. compound expansion connector according to claim 4, which is characterized in that the compound expansion connector further includes L-type
Rod-like element, cross sectional shape and the mounting hole of outer profile match.
6. compound expansion connector according to claim 1, which is characterized in that the expansion sleeve includes the of two pairings
One ontology and the second ontology, the first noumenon and the second ontology are connected as one by buckle structure.
7. compound expansion connector according to claim 6, which is characterized in that the first noumenon of the expansion sleeve and second
Body construction is identical, the first noumenon, the second ontology two sides on be provided with buckle, buckle includes spliced eye and inserted tooth, card
2 pairs are buckled with, spliced eye and inserted tooth, which respectively correspond, to be arranged on the two sides of the first noumenon, the second ontology, the inserted tooth of the first noumenon
It can be embedded in the spliced eye of the second ontology, the inserted tooth of the second ontology can be embedded in the spliced eye of the first noumenon, make expansion sleeve
The first noumenon and the second ontology are connected as one.
8. compound expansion connector according to claim 7, which is characterized in that the end of the inserted tooth is inversed hook like.
9. compound expansion connector described in any claim in -8 according to claim 1, which is characterized in that the expansion sleeve
Middle part be equipped with pars contractilis, pars contractilis be in corrugated tube shape.
10. compound expansion connector according to claim 9, which is characterized in that the pars contractilis is equipped at least one edge
The axially extending third longitudinal cut of expansion sleeve, third longitudinal cut are uniformly distributed along the circumferential direction of bulge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920102352.6U CN209671366U (en) | 2019-01-21 | 2019-01-21 | Compound expansion connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920102352.6U CN209671366U (en) | 2019-01-21 | 2019-01-21 | Compound expansion connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209671366U true CN209671366U (en) | 2019-11-22 |
Family
ID=68566471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920102352.6U Active CN209671366U (en) | 2019-01-21 | 2019-01-21 | Compound expansion connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209671366U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630525A (en) * | 2019-01-21 | 2019-04-16 | 刘韦明 | Compound expansion connector |
| CN109869393A (en) * | 2019-03-26 | 2019-06-11 | 张向洪 | A kind of furniture two-in-one conjoined fast-assembling connecting rod |
| CN110877217A (en) * | 2019-12-11 | 2020-03-13 | 台州浩尔工业有限公司 | Eight-channel six-star clamp and machining process |
| CN111486163A (en) * | 2020-04-08 | 2020-08-04 | 中国建筑股份有限公司 | Expansion type pin shaft for mounting standard section of tower crane and use method |
| CN113944239A (en) * | 2021-10-28 | 2022-01-18 | 扬州工业职业技术学院 | Composite tenon, wood member connecting method and wood assembly |
-
2019
- 2019-01-21 CN CN201920102352.6U patent/CN209671366U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630525A (en) * | 2019-01-21 | 2019-04-16 | 刘韦明 | Compound expansion connector |
| CN109869393A (en) * | 2019-03-26 | 2019-06-11 | 张向洪 | A kind of furniture two-in-one conjoined fast-assembling connecting rod |
| CN110877217A (en) * | 2019-12-11 | 2020-03-13 | 台州浩尔工业有限公司 | Eight-channel six-star clamp and machining process |
| CN111486163A (en) * | 2020-04-08 | 2020-08-04 | 中国建筑股份有限公司 | Expansion type pin shaft for mounting standard section of tower crane and use method |
| CN111486163B (en) * | 2020-04-08 | 2021-09-21 | 中国建筑股份有限公司 | Expansion type pin shaft for mounting standard section of tower crane and use method |
| CN113944239A (en) * | 2021-10-28 | 2022-01-18 | 扬州工业职业技术学院 | Composite tenon, wood member connecting method and wood assembly |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |