CN207454474U - A kind of expansion tube - Google Patents
A kind of expansion tube Download PDFInfo
- Publication number
- CN207454474U CN207454474U CN201721218562.9U CN201721218562U CN207454474U CN 207454474 U CN207454474 U CN 207454474U CN 201721218562 U CN201721218562 U CN 201721218562U CN 207454474 U CN207454474 U CN 207454474U
- Authority
- CN
- China
- Prior art keywords
- expansion
- slot
- tube body
- tenons
- space
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of expansion tubes, including tube body, the tube body includes expansion arc and fixed section, the top middle portion of expansion arc offers a space along tube body length direction, expansion arc is divided into two expansion tenons by described space, the end face of the fixed section is vertically installed with the mounting hole being connected with space, and the opposing sidewalls of two expansion tenons, which are respectively and fixedly provided with along what tube body length direction was set, thickens item.By thickening item in the opposing sidewalls increase of two expansion tenons, increase spacing between tapping screw and expansion tenon by thickening item during tapping screw compressing expansion tenon, so enhance install after the anchor force that is formed between expansion tube and wall.
Description
Technical field
The utility model is related to a kind of fastener auxiliary device, more specifically it is related to a kind of expansion tube.
Background technology
Plastic dowel sleeve is used to fasten the connection and installation of various middle group pendant articles, is matched with self-tapping screw.
Plastic dowel sleeve generally includes the expansion arc positioned at front end and the fixed section positioned at rear end, is wherein offered in the middle part of expansion arc scarce
Mouthful, fixed section is internally provided with the screw hole mating with self-tapping screw, and screw hole cooperates with notch, and the center line of expansion arc and solid
The axis for determining section threaded hole overlaps.When plastic dowel sleeve is installed, pre-manufactured hole is drilled out on wall according to plastic expansion pipe size, so
Mating self-tapping screw is put into the fixed section of plastic dowel sleeve afterwards, outer diameter and the plastic dowel sleeve inlet of self-tapping screw
Internal diameter is consistent.Then the expansion arc of plastic dowel sleeve is shot using the compressing of instrument self-tapping screw, makes expansion arc spreading and and wall
The hole wall of upper pre-manufactured hole fits closely, and reaches required anchor force.
Notification number is that the Chinese patent of CN205371210U discloses a kind of plastic dowel sleeve, the expansion including being located at front end
Section and the fixed section positioned at its rear end, the front center of plastic dowel sleeve offer axially along space between strip form it is swollen
Swollen section, the tube body of expansion arc is divided into two expansion tenons by space between strip, and fixed section is cylindrical and its middle part offers
Threaded hole sets the interval thin-walled convenient for connection, the axis of threaded hole between space connects or both between threaded hole and strip
It is overlapped with the center line of expansion arc, the opposite face between elongate in shape at space position is equipped with the holding section being mutually twisted, and two swollen
Holding section on swollen tenon cooperates, and mutually constrains, mutual /V, effectively prevents expansion tenon towards one side deflection, thus
Ensure that the expansion arc midline position after shrinking is constant, it is ensured that the concentricity of expansion arc and fixed section.
This expansion tube only oppresses two expansion tenons by tapping screw, make expansion tenon and wall formed interference fit from
And be fixed, but it is poor only by the interference fit effect that two expansion tenons are formed, have much room for improvement.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of expansion tube, after installation with wall
Stronger anchor force can be formed between body.
To achieve the above object, the utility model provides following technical solution：
A kind of expansion tube, including tube body, the tube body includes expansion arc and fixed section, the top middle portion edge of expansion arc
Tube body length direction offers a space, it is described between space expansion arc is divided into two expansion tenons, the end of the fixed section
Face is vertically installed with the mounting hole being connected with space, and the opposing sidewalls of two expansion tenons are respectively and fixedly provided with along tube body
What length direction was set thickens item.
By using above-mentioned technical proposal, by thickening item, tapping screw in the opposing sidewalls increase of two expansion tenons
Increase spacing between tapping screw and expansion tenon by thickening item when oppressing expansion tenon, so enhance install after it is swollen
The anchor force formed between tube expansion and wall.
The utility model is further arranged to：It is circumferentially opened along tube body the one side that two expansion tenons mutually deviate from
Equipped with anti-back slot, the anti-back slot is arranged to multiple and evenly distributed along tube body length direction.
By using above-mentioned technical proposal, expansion tube be subject to outward when pullling power by the setting energy of multiple anti-back slots
It is enough to put up a resistance to pullling power, and then prevent expansion tube from being pulled out by external force.
The utility model is further arranged to：Each anti-back slot is both provided with chamfering close to the side wall of fixed section.
By using above-mentioned technical proposal, by chamfering expansion tube is made to be easier to be driven into wall.
The utility model is further arranged to：The one side that two expansion tenons mutually deviate from is both provided with by elastic material
Journal stirrup made of material, two journal stirrups are set in reversed acanthoid.
By using above-mentioned technical proposal, the reversed acanthoid setting of journal stirrup makes expansion tube that can pass through after being driven into wall
Two journal stirrups prevent expansion tube from being pulled out by external force.
The utility model is further arranged to：The side wall of an anti-back slot, the journal stirrup are fixed in the top of the journal stirrup
Length extend to another anti-back slot below the anti-back slot, two anti-back slots are interconnected by abutting slot, institute
Journal stirrup is stated with abutting when slot abuts against journal stirrup from abutting slot internal projection.
By using above-mentioned technical proposal, after expansion tube is driven into wall, journal stirrup be squeezed and deformation to
Access slot abuts against, and the be squeezed elastic force of generation of journal stirrup further enhances interference fit between expansion tenon and wall.
The utility model is further arranged to：Described space is connected with mounting hole by connectivity slot, the connectivity slot
The two opposite sides of opening and the opening of mounting hole coincide.
By using above-mentioned technical proposal, make tapping screw swollen directly with two after being penetrated out of mounting hole by connectivity slot
The item that thickens in the two opposite side walls of swollen tenon abuts against, and two spacing between expansion tenon and tapping screw of increase make expansion
Pipe forms more firm interference fit with wall.
In conclusion the utility model has the advantages that：
1. stronger anchor force is formed between expansion tube and wall.
Description of the drawings
Fig. 1 is embodiment positive structure diagram；
Fig. 2 is A-A faces sectional view in Fig. 1；
Fig. 3 is embodiment side structure schematic view.
Reference sign：1st, tube body；2nd, expansion arc；3rd, fixed section；4th, space；5th, expansion tenon；6th, install
Hole；7th, connectivity slot；8th, item is thickened；9th, anti-back slot；10th, chamfering；11st, journal stirrup；12nd, slot is abutted.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
As shown in Figure 1 and Figure 2, a kind of expansion tube, including tube body 1 made of elastic material.The tube body 1 includes
Expansion arc 2 and fixed section 3, the top middle portion of expansion arc 2 offers a space 4 along 1 length direction of tube body, and passes through a space
Expansion arc 2 is divided into two expansion tenons 5 in mirror symmetry by 4, and the end face of fixed section 3 vertically offers to be screwed into self tapping
The mounting hole 6 of screw.Between be connected between space 4 and mounting hole 6 by axially penetrating through the connectivity slot 7 of tube body 1, connectivity slot 7
The two opposite sides of opening and the opening of mounting hole 6 coincide.Tapping screw is installed by being screwed into mounting hole 6, and then passes through connection
Slot 7 penetrates to expanding outwardly, two expansion tenons 5 between two expansion tenons 5 to form interference fit with wall.
The opposing sidewalls of two expansion tenons 5 are connected with along what 1 length direction of tube body was set and thicken item 8, and two
A side wall for thickening item 8 is connected in arc-shaped with the expansion tenon 5 where it.It is twisted by thickening item 8 with increasing tapping screw
The distance between with two expansion tenons 5 after entering, and enhance the interference fit between expansion tenon 5 and wall, pacify tube body 1
It installs into more firm afterwards.
As shown in Figure 1, Figure 3, the one side that two expansion tenons 5 mutually deviate from circumferentially is offered along the outer wall of tube body 1
Anti-back slot 9, and the anti-back slot 9 on two expansion tenons 5 is disposed as five and evenly distributed along 1 length direction of tube body, often
A anti-back slot 9 is disposed as chamfering 10 close to the side wall of fixed section 3.The anti-back energy of tube body 1 can be enhanced by anti-back slot 9
Power, the stability being further ensured that after the installation of tube body 1, while the setting of chamfering 10 makes tube body 1 be easier to be driven into wall
In vivo.
The one side that two expansion tenons 5 mutually deviate from also is connected with journal stirrup 11, and two journal stirrups 11 are in reversed acanthoid
It sets.The length of side wall and journal stirrup 11 that the 4th anti-back slot 9 is fixed on the top of journal stirrup 11 extends to the 5th anti-back slot 9,
4th and the 5th anti-back slot 9 are interconnected by the abutting slot 12 set along 5 length direction of expansion tenon, and journal stirrup 11
It is abutted against with the side wall for abutting slot 12.It should be noted that journal stirrup 11 is connected with the 4th anti-back slot 9 is connected in the present embodiment
Preferred embodiment.Journal stirrup 11 is squeezed in installation process mutually to be squeezed with the bottom wall for abutting slot 12, and journal stirrup 11 at this time from
12 internal projection of slot is abutted, extruding force is generated to wall by the elastic deformation of journal stirrup 11, further enhances tube body 1 and wall
Between stability.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all in this practicality
Within new design concept, any modifications, equivalent replacements and improvements are made should be included in the protection of the utility model
Within the scope of.
Claims (6)
1. a kind of expansion tube, including tube body (1), the tube body (1) includes expansion arc (2) and fixed section (3), expansion arc
(2) top middle portion offers a space (4) along tube body (1) length direction, it is described between space (4) expansion arc (2) is divided into
Two expansion tenons (5), the end face of the fixed section (3) are vertically installed with the mounting hole (6) being connected with a space (4),
It is characterized in that：The opposing sidewalls of two expansion tenons (5) are respectively and fixedly provided with along what tube body (1) length direction was set and thicken item
(8)。
2. a kind of expansion tube according to claim 1, it is characterised in that：What two expansion tenons (5) were mutually deviated from
One side circumferentially offers anti-back slot (9) along tube body (1), and the anti-back slot (9) is arranged to multiple and along tube body (1) length
Direction is evenly distributed.
3. a kind of expansion tube according to claim 2, it is characterised in that：Each anti-back slot (9) is close to fixed section (3)
Side wall be both provided with chamfering (10).
4. a kind of expansion tube according to claim 2, it is characterised in that：What two expansion tenons (5) were mutually deviated from
One side is both provided with the journal stirrup made of elastic material (11), and two journal stirrups (11) are set in reversed acanthoid.
5. a kind of expansion tube according to claim 4, it is characterised in that：The top of the journal stirrup (11) be fixed on one it is anti-
Move back the side wall of slot (9), the length of the journal stirrup (11) extends to another anti-back slot (9) below the anti-back slot (9), two
The anti-back slot (9) is interconnected by abutting slot (12), and the journal stirrup (11) is with abutting journal stirrup (11) when slot (12) abuts against
From abutting slot (12) internal projection.
6. a kind of expansion tube according to claim 1, it is characterised in that：Described space (4) and mounting hole (6) pass through company
Straight slot (7) is connected, and the two opposite sides of connectivity slot (7) opening and the opening of mounting hole (6) coincide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721218562.9U CN207454474U (en) | 2017-09-21 | 2017-09-21 | A kind of expansion tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721218562.9U CN207454474U (en) | 2017-09-21 | 2017-09-21 | A kind of expansion tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207454474U true CN207454474U (en) | 2018-06-05 |
Family
ID=62283821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721218562.9U Expired - Fee Related CN207454474U (en) | 2017-09-21 | 2017-09-21 | A kind of expansion tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207454474U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139644A (en) * | 2018-11-09 | 2019-01-04 | 浙江天开实业有限公司 | A kind of two-way Anti-extrusion expansion tube |
| CN111637126A (en) * | 2020-05-29 | 2020-09-08 | 博众精工科技股份有限公司 | Expansion type positioning pin |
| CN114151429A (en) * | 2021-11-08 | 2022-03-08 | 卢伟阅 | Fixing piece |
-
2017
- 2017-09-21 CN CN201721218562.9U patent/CN207454474U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109139644A (en) * | 2018-11-09 | 2019-01-04 | 浙江天开实业有限公司 | A kind of two-way Anti-extrusion expansion tube |
| CN109139644B (en) * | 2018-11-09 | 2024-04-23 | 浙江天开实业有限公司 | Bidirectional anti-falling expansion pipe |
| CN111637126A (en) * | 2020-05-29 | 2020-09-08 | 博众精工科技股份有限公司 | Expansion type positioning pin |
| CN111637126B (en) * | 2020-05-29 | 2022-06-21 | 博众精工科技股份有限公司 | Expansion type positioning pin |
| CN114151429A (en) * | 2021-11-08 | 2022-03-08 | 卢伟阅 | Fixing piece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20210921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |