CN105508366A - Plastic expansion pipe - Google Patents
Plastic expansion pipe Download PDFInfo
- Publication number
- CN105508366A CN105508366A CN201610021554.9A CN201610021554A CN105508366A CN 105508366 A CN105508366 A CN 105508366A CN 201610021554 A CN201610021554 A CN 201610021554A CN 105508366 A CN105508366 A CN 105508366A
- Authority
- CN
- China
- Prior art keywords
- expansion
- dowel sleeve
- plastic dowel
- tenon
- sleeve according
- 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.)
- Pending
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 44
- 238000009434 installation Methods 0.000 abstract description 8
- 238000010079 rubber tapping Methods 0.000 description 9
- 238000007373 indentation Methods 0.000 description 2
- 239000002990 reinforced plastic Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/04—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front
- F16B13/06—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve
- F16B13/063—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander
- F16B13/066—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose with parts gripping in the hole or behind the reverse side of the wall after inserting from the front combined with expanding sleeve by the use of an expander fastened by extracting a separate expander-part, actuated by the screw, nail or the like
Abstract
The invention relates to the field of fasteners, in particular to a plastic expansion pipe which comprises an expansion segment located at the front end and a fixed segment located at the back end. The middle of the front end of the plastic expansion pipe is provided with a long-strip-shaped spacing gap in the axial direction of the plastic expansion pipe to form the expansion segment, and the long-strip-shaped spacing gap divides a pipe body of the expansion segment into two expansion tenons; the fixed segment is in the shape of a circular pipe, a threaded hole is formed in the middle of the fixed segment and communicated with the long-strip-shaped spacing gap, or a spacing thin wall which can facilitate communication is arranged between the threaded hole and the long-strip-shaped spacing gap, and the axis of the threaded hole coincides with the center line of the expansion segment; the opposite faces, located at the long-strip-shaped spacing gap, of the expansion tenons are provided with clamping portions which are meshed with each other, the clamping portions of the two expansion tenons are mutually matched, restrained and limited to effectively prevent the expansion tenons from deflecting towards one side, therefore, it is guaranteed that the position of the center line of the shrunk expansion segment is invariable, the coaxiality of the expansion segment and the fixed segment is guaranteed, and then it is guaranteed that an automatic screw is smoothly tapped into the expansion segment to successfully complete installation.
Description
Technical field
The present invention relates to fastener areas, particularly plastic dowel sleeve.
Background technique
Plastic dowel sleeve is used for connection and the installation of fastening various middle group suspension member article, supports the use with self tapping screw.Plastic dowel sleeve generally includes the expansion arc being positioned at front end and the holding part being positioned at rear end, wherein the middle part of expansion arc offers breach, the inside of holding part is provided with the tapped hole supporting with self tapping screw, tapped hole and breach are interconnected, and the dead in line of the center line of expansion arc and holding part tapped hole.When plastic dowel sleeve is installed, on body of wall, get out pre-manufactured hole according to plastic dowel sleeve size, the size of pre-manufactured hole and expansion tube external diameter one to, the length of pre-manufactured hole is usually than plastic expansion pipe range 5mm-7mm.Then supporting self tapping screw is put into the holding part of plastic dowel sleeve, the length of self tapping screw is that the length of plastic dowel sleeve adds is the thickness needing to hang screens, and the external diameter of self tapping screw is consistent with the internal diameter of plastic dowel sleeve ingress.Then use instrument that the expansion arc of plastic dowel sleeve is shot in tap compressing, make expansion arc spreading and fit tightly with the hole wall of pre-manufactured hole on body of wall, reaching required anchor force.
Mostly be that excising one section vertically in the front center of plastic dowel sleeve forms rectangular indentation at present, this rectangular indentation by the expansion tenon of plastic dowel sleeve dimidiation formula, thus forms the expansion arc of plastic dowel sleeve.Plastic dowel sleeve is being put into the pre-manufactured hole on body of wall, the extruding that the expansion tenon of expansion arc both sides is subject to pre-manufactured hole hole wall is shunk to middle part.But due to the interference of external force, the expansion tenon deformation extent of both sides there are differences, often can be amesiality, make to shrink the center line of rear expansion arc and the axial offset of holding part tapped hole, increase self tapping screw installation difficulty.When misplacing serious, self tapping screw can be caused to shoot expansion arc, namely cannot realize installing, defect rate is higher.
Summary of the invention
The object of this invention is to provide a kind of plastic dowel sleeve being convenient to install.
For achieving the above object, present invention employs following technological scheme: a kind of plastic dowel sleeve, comprise the expansion arc being positioned at front end and the holding part being positioned at its rear end, the front center of plastic dowel sleeve axially offers space between long strip along it and forms expansion arc, between long strip, the body of expansion arc is divided into two expansion tenons by space, described holding part cylindrical and its in the middle part of offer tapped hole, between tapped hole and long strip, space is communicated with or arranges the interval thin-walled being convenient to be communicated with between the two, the axis of tapped hole and the center line of expansion arc overlap, between described long strip, the opposing side of space position is provided with the engagement portion of occlusion mutually.
Owing to adopting above technological scheme, engagement portion on two expansion tenons cooperatively interacts, mutual constraint, mutually spacing, effectively prevent expansion tenon towards side deflection, thus ensure that the expansion arc midline position after shrinking is constant, guarantee the coaxality of expansion arc and holding part, thus ensure that automatic screw is smooth and easy shoots expansion arc, completes installation smoothly.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the left view of Fig. 1;
Fig. 4 is the B-B sectional view of Fig. 2;
Fig. 5 is the A-A sectional view of Fig. 3;
Fig. 6 is the plan view of another embodiment of the present invention;
Fig. 7 is the D-D sectional view of Fig. 6.
Embodiment
A kind of plastic dowel sleeve, comprise the expansion arc 10 being positioned at front end and the holding part 20 being positioned at its rear end, along it, axially offer space 11 between long strip forms expansion arc 10 to the front center of plastic dowel sleeve, between long strip, the body of expansion arc 10 is divided into two expansion tenons 12 by space 11, described holding part 20 cylindrical and its in the middle part of offer tapped hole 21, between tapped hole 21 and long strip, space 11 is communicated with or arranges the interval thin-walled being convenient to be communicated with between the two, the axis of tapped hole 21 and the center line of expansion arc 10 overlap, between described long strip, the opposing side of space 11 position is provided with the engagement portion 13 of occlusion mutually.Namely between long strip space 11 both sides expansion tenon 12 on the engagement portion 13 arranged on the expansion tenon 12 of 13, two, engagement portion be mutually engaged.Tapped hole 21 needs to be communicated with space between long strip 11, so just both can be processed into connectivity structure when producing plastic dowel sleeve.But generally for simplification production technology, can between tapped hole 21 and long strip, between space 11, leave the very thin interval thin-walled of one deck, this interval thin-walled is very easy to extruding and tears, and self tapping screw can smooth and easyly to be shot between long strip in space 11.Engagement portion 13 on two expansion tenons 12 is interlocked, both cooperatively interact, mutual constraint, mutually spacing, effectively prevent expansion tenon towards side deflection, thus ensure that the expansion arc midline position after shrinking is constant, guarantee the coaxality of expansion arc and holding part, thus ensure that automatic screw is smooth and easy shoots expansion arc, completes installation smoothly.
As Fig. 1, shown in 2 and 4, the axial cross section of described engagement portion 13 is step-like, engagement portion 13 is provided with two or more along the length direction of expansion tenon 12, the step height trend being positioned at the adjacent engagement portion 13 on same expansion tenon 12 is contrary, and the low step of high step 131/ 132 of described engagement portion 13 is engaged mutually with the high step 131 of the low step 132/ on adjacent expansion tenon 12.
The high step 131 of described engagement portion 13 is engaged formation a pair male-female engagement mutually with the low step on adjacent expansion tenon 12, and the low step 132 of engagement portion 13 is mutually engaged with the high step 131 on adjacent expansion tenon 12 and forms another to male-female engagement.The step height trend of the adjacent engagement portion 13 on same expansion tenon 12 is contrary, so the male-female engagement between two expansion tenons 12 is staggeredly arranged, makes the homogeneous deformation of expansion arc 10, guarantees that expansion arc midline position is constant.
As shown in Figure 7, the axial cross section of described engagement portion 13 is groove 133 or projection 134, be positioned at groove 133 on same expansion tenon 12 and projection 134 is arranged along plastic dowel sleeve length direction interval, described groove 133/ projection 134 is engaged mutually with projection 134/ groove 133 on adjacent expansion tenon 12.As Fig. 6, described high step 131 is less than the size of low step 132 along the size of expansion arc 10 length direction.This structure can ensure that high step 131 is positioned at low step 132 and does not contact with low step 132 sidewall, reduces frictional force between the two, ensures two smooth and easy separation of expansion tenon 12, thus ensures that expansion arc 10 expansion puts in place.
The degree of depth of described groove 133 is consistent with the height dimension of projection 134, and the length of groove 133 is greater than the length of projection 134.This structure can ensure that projection 134 is positioned at groove 133, and projection 134 does not contact with groove 133 cell wall, reduces frictional force between the two, ensures two smooth and easy separation of expansion tenon 12, thus ensures that expansion arc 10 expansion puts in place.
The outer wall of described expansion tenon 12 is provided with the journal stirrup 14 in reversed acanthoid, and journal stirrup 14 plays spacing non-return effect, can prevent plastic dowel sleeve from coming off in the pre-manufactured hole metope, the installation reliability of reinforced plastic expansion tube.
Two expansion tenons 12 are arranged symmetrically in the both sides of expansion arc 10 center line.This structure can ensure that the contraction deformation of two expansion tenons 12 is even, guarantees the position of expansion arc 10 center line further.
As Fig. 1, shown in 2 and 6, the outer surface of described journal stirrup 14 is helicoid, and the rotation direction of helicoid is contrary with the rotation direction of tapped hole 21; Described journal stirrup 14 is positioned at the rear end of expansion tenon 12.The rotation direction of journal stirrup 14 is contrary with the rotation direction of tapped hole 21, can prevent plastic dowel sleeve from following tapping screw and rotate, significantly reduce installation difficulty.
The outer circumferential face of described holding part 20 is provided with the raised line 22 arranged along its axial direction, and described raised line 22 is provided with more than two, and arranges along the circumferencial direction uniform intervals of holding part 20.The setting of raised line 22 both can ensure that plastic dowel sleeve outer wall and metope pre-manufactured hole had enough area of contact, again convenient taking-up plastic dowel sleeve.
Between described long strip, space 11 is through to end, plastic dowel sleeve front end.This structure can increase the expansion amplitude of expansion arc 10, guarantees in expansion arc 10 pre-manufactured hole abutting on metope tightly, the installation reliability of reinforced plastic expansion tube.
Claims (10)
1. a plastic dowel sleeve, comprise the expansion arc (10) being positioned at front end and the holding part (20) being positioned at its rear end, it is characterized in that: the front center of plastic dowel sleeve axially offers space between long strip (11) along it and forms expansion arc (10), between long strip, the body of expansion arc (10) is divided into two expansion tenons (12) by space (11), described holding part (20) cylindrical and its in the middle part of offer tapped hole (21), between tapped hole (21) and long strip, space (11) is communicated with or arranges the interval thin-walled being convenient to be communicated with between the two, the axis of tapped hole (21) and the center line of expansion arc (10) overlap, between described long strip, the opposing side of space (11) position is provided with the engagement portion (13) of occlusion mutually.
2. plastic dowel sleeve according to claim 1, it is characterized in that: the axial cross section of described engagement portion (13) is step-like, engagement portion (13) is provided with two or more along the length direction of expansion tenon (12), the step height trend being positioned at the adjacent engagement portion (13) on same expansion tenon (12) is contrary, and high step (the 131)/low step (132) of described engagement portion (13) is engaged mutually with the low step (132) on adjacent expansion tenon (12)/high step (131).
3. plastic dowel sleeve according to claim 1, it is characterized in that: the axial cross section of described engagement portion (13) is groove (133) or projection (134), be positioned at groove (133) on same expansion tenon (12) and projection (134) is arranged along plastic dowel sleeve length direction interval, described groove (133)/projection (134) is engaged mutually with the projection (134) on adjacent expansion tenon (12)/groove (133).
4. plastic dowel sleeve according to claim 2, is characterized in that: described high step (131) is less than the size of low step (132) along the size of expansion arc (10) length direction.
5. plastic dowel sleeve according to claim 3, it is characterized in that: the degree of depth of described groove (133) is consistent with the height dimension of projection (134), the length of groove (133) is greater than the length of projection (134).
6. the plastic dowel sleeve according to any one of claim 1-5, is characterized in that: the outer wall of described expansion tenon (12) is provided with the journal stirrup (14) in reversed acanthoid.
7. plastic dowel sleeve according to claim 6, is characterized in that: two expansion tenons (12) are arranged symmetrically in the both sides of expansion arc (10) center line.
8. plastic dowel sleeve according to claim 7, is characterized in that: the outer surface of described journal stirrup (14) is helicoid, and the rotation direction of helicoid is contrary with the rotation direction of tapped hole (21); Described journal stirrup (14) is positioned at the rear end of expansion tenon (12).
9. plastic dowel sleeve according to claim 8, it is characterized in that: the outer circumferential face of described holding part (20) is provided with the raised line (22) arranged along its axial direction, described raised line (22) is provided with more than two, and arranges along the circumferencial direction uniform intervals of holding part (20).
10. plastic dowel sleeve according to claim 9, is characterized in that: between described long strip, space (11) is through to end, plastic dowel sleeve front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021554.9A CN105508366A (en) | 2016-01-11 | 2016-01-11 | Plastic expansion pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610021554.9A CN105508366A (en) | 2016-01-11 | 2016-01-11 | Plastic expansion pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105508366A true CN105508366A (en) | 2016-04-20 |
Family
ID=55716588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610021554.9A Pending CN105508366A (en) | 2016-01-11 | 2016-01-11 | Plastic expansion pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105508366A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112752909A (en) * | 2018-10-09 | 2021-05-04 | 喜利得股份公司 | Expansion anchor with raised area |
| CN113700721A (en) * | 2021-09-14 | 2021-11-26 | 赵小兵 | Anti-loose self-tapping screw |
| US11920619B2 (en) | 2018-10-09 | 2024-03-05 | Hilti Aktiengesellschaft | Expansion anchor with forwards and rearwards grooves |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2200069Y (en) * | 1994-08-17 | 1995-06-07 | 胡晓光 | Plastic expansion pipe |
| US5443343A (en) * | 1993-06-18 | 1995-08-22 | A. Raymond Gmbh & Co., Kg | Metal dowel for anchorage in thin wall panels |
| CN2417319Y (en) * | 2000-03-23 | 2001-01-31 | 吴健 | Plastic dowel sleeve |
| CN2835680Y (en) * | 2005-10-12 | 2006-11-08 | 庞永强 | Expansion tube fastener |
| CN201158868Y (en) * | 2008-01-08 | 2008-12-03 | 北京住总集团有限责任公司 | Steel wire gauze locating anchorage member especially for exterior heat preservation |
| CN104632818A (en) * | 2015-01-15 | 2015-05-20 | 徐存然 | Expansion swivel nut |
| CN205371210U (en) * | 2016-01-11 | 2016-07-06 | 安徽省根源光大节能建材有限公司 | Plastic dowel sleeve |
-
2016
- 2016-01-11 CN CN201610021554.9A patent/CN105508366A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5443343A (en) * | 1993-06-18 | 1995-08-22 | A. Raymond Gmbh & Co., Kg | Metal dowel for anchorage in thin wall panels |
| CN2200069Y (en) * | 1994-08-17 | 1995-06-07 | 胡晓光 | Plastic expansion pipe |
| CN2417319Y (en) * | 2000-03-23 | 2001-01-31 | 吴健 | Plastic dowel sleeve |
| CN2835680Y (en) * | 2005-10-12 | 2006-11-08 | 庞永强 | Expansion tube fastener |
| CN201158868Y (en) * | 2008-01-08 | 2008-12-03 | 北京住总集团有限责任公司 | Steel wire gauze locating anchorage member especially for exterior heat preservation |
| CN104632818A (en) * | 2015-01-15 | 2015-05-20 | 徐存然 | Expansion swivel nut |
| CN205371210U (en) * | 2016-01-11 | 2016-07-06 | 安徽省根源光大节能建材有限公司 | Plastic dowel sleeve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112752909A (en) * | 2018-10-09 | 2021-05-04 | 喜利得股份公司 | Expansion anchor with raised area |
| US11920619B2 (en) | 2018-10-09 | 2024-03-05 | Hilti Aktiengesellschaft | Expansion anchor with forwards and rearwards grooves |
| CN113700721A (en) * | 2021-09-14 | 2021-11-26 | 赵小兵 | Anti-loose self-tapping screw |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160420 |