CN203641209U - Inverted expansion wooden pin - Google Patents
Inverted expansion wooden pin Download PDFInfo
- Publication number
- CN203641209U CN203641209U CN201420003717.7U CN201420003717U CN203641209U CN 203641209 U CN203641209 U CN 203641209U CN 201420003717 U CN201420003717 U CN 201420003717U CN 203641209 U CN203641209 U CN 203641209U
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- CN
- China
- Prior art keywords
- dowel
- wooden pin
- blind hole
- expansion
- pin body
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Abstract
The utility model discloses an inverted expansion wooden pin, particularly relates to an internal-expansion wooden pin used for loosening wall surfaces. The inverted expansion wooden pin comprises a column-shaped wooden pin body, a notch, a blind hole and an inner wooden pin body and is characterized in that the blind hole and the notch are arranged at the bottom of the column-shaped wooden pin body, and the inner wooden pin body shaped in a frustum is placed in the blind hole. When in use, a hole is drilled in a surface of a wall, the top of the column-shaped wooden pin body is hammered by a hammer after the inverted expansion wooden pin is placed into the drilled hole, the inner wooden pin body resisted by the wall is forced to enter the blind hole, the notch expands after being stressed to allow the inner wooden pin body to enter the bottom of the column-shaped wooden pin body, the bottom of the column-shaped wooden pin body expands to form an inverted wedge, the integral inverted expansion wooden pin forms a shape with the big end inside, and the column-shaped wooden pin is fixed in the wall and cannot be pulled out, so that an article needing to be mounted can be fixed on the inverted expansion wooden pin via a self-tapping screw. The inverted expansion wooden pin is simple to process, material-saving, firm after being mounted, strong in practicability and capable of realizing the purpose of mounting articles on a loose wall surface firmly.
Description
Technical field
The utility model relates to a kind of inverse expansion dowel, relates in particular to a kind of dowel of the rear end inverse expansion that is applicable to loose metope, belongs to dowel technical field.
Background technique
Dowel is widely used in daily life, ordinary circumstance is first first holed at metope with electric hammer, then in hole, squeezes into dowel, then the products such as the light fixture of needs installation, door-inhale, small household appliances, hook is fixed with self tapping screw, reach change wall covering, be convenient to fixing object.
While utilizing dowel to install, run into loose metope, just can not produce a desired effect.Dowel can, because body of wall is loose, is subject to external force and is easy to extract.
In the time of the screed of electric hammer drill between fragment of brick and fragment of brick, common dowel can not firmly be fixed, and the article of installing are easy to come off.Through experiment, on common brick is built a wall the dowel of face, magnetic door-inhale is installed, the situation that the suction-combining force of magnetic door-inhale is approximately 2 kilograms, installs and firmly accounts for 40%, and all the other 60% come off in the time of multiple switching door.
When the metope being mounted is the aerated-block of short texture, common dowel hardly can generation effect, and the article of installing can come off at any time.Through experiment, on the dowel of installing at aerated-block metope, magnetic door-inhale is installed, the situation that the suction-combining force of magnetic door-inhale is approximately 2 kilograms, installs and firmly accounts for 10%, and all the other 90% come off in the time of multiple switching door.
The metope of aerated-block is also not suitable for existing any metal setscrew, in the time screwing the nut of setscrew, when nut is tightened onto final position, setscrew can not be completely fixed, final setscrew is pulled out easily by staff, can not fixedly mount.
When the metope being mounted is the aerated-block of short texture, while adopting plastic dowel sleeve to install, because self tapping screw is screwed into after plastic dowel sleeve, the deformation of bottom amount of expansion tube is little, and in the loose situation of metope, plastic dowel sleeve is very easily pulled out.
In order to solve the dowel of a kind of rear end inverse expansion that is applicable to loose metope of above situation design, use without the dowel that has a kind of rear end inverse expansion that is applicable to loose metope at present, patent searching document is open without the new technological scheme of this technology, the utility model first gets out hole with electric hammer at metope while use, then in hole, squeeze into outer dowel, then impact the top of cylindricality dowel with hammer, the resistance that interior dowel is subject to body of wall enters in blind hole interior dowel, the stressed rear spreading of otch, interior dowel enters into the inside of cylindricality dowel bottom, cylindricality dowel bottom is expanded to down wedge, whole dowel forms interior large outer little shape, cylindricality dowel is fixed in body of wall and can not extracts, can be on dowel surface with the article of the fixing required installation of self tapping screw, reach the object of article being firmly installed at loose metope.
Summary of the invention
Have first and first hole at metope with electric hammer in order to overcome existing nothing, then in hole, squeeze into a kind of dowel deficiency of the rear end inverse expansion that is applicable to loose metope, the purpose of this utility model is first to hole at metope with electric hammer in order to provide first, then in hole, squeeze into dowel, whole dowel forms interior large outer little shape, and cylindricality dowel is fixed in body of wall and can not extracts, this dowel simplicity of design, with low cost, volume is little, stressed large, reaches the object of article being firmly installed at loose metope.
The technical scheme in the invention for solving the technical problem is: a kind of inverse expansion dowel, comprise cylindricality dowel, otch, blind hole, interior dowel, and it is characterized in that:
Blind hole is arranged at the bottom of described cylindricality dowel;
Described blind hole depth is less than 1/3 of cylindricality dowel length;
Otch is arranged at the bottom of described cylindricality dowel;
Described notch depth is less than 1/2 of cylindricality dowel length;
In described blind hole, place the interior dowel of taper type;
Described interior dowel length is greater than the degree of depth of blind hole and is less than 1/2 of cylindricality dowel 1 length;
When use first on the face of body of wall with getting out hole, dowel of the present utility model is put into hole, then impact the top of cylindricality dowel with hammer, the resistance that interior dowel is subject to body of wall enters in blind hole interior dowel, the stressed rear spreading of otch, interior dowel enters into the inside of cylindricality dowel bottom, cylindricality dowel bottom is expanded to down wedge, whole dowel forms interior large outer little shape, cylindricality dowel is fixed in body of wall and can not extracts, can, on dowel surface with the article of the fixing required installation of self tapping screw, reach the object of article being firmly installed at loose metope.
The beneficial effects of the utility model are simplicity of design, with low cost, volume is little, processing is simple, save timber, after installing, firmly, reach the object of article being firmly installed at loose metope, and practicability is large.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is scheme of installation of the present utility model.
Fig. 3 is that signal of the present utility model installs schematic diagram.
1. cylindricality dowels in figure, 2. otch, 3. blind hole, 4. interior dowel, 5. body of wall, 6. hole.
Embodiment
Example 1: a kind of inverse expansion dowel, comprise cylindricality dowel 1, otch 2, blind hole 3, interior dowel 4, it is characterized in that:
Described blind hole 3 degree of depth are less than 1/3 of cylindricality dowel 1 length;
Described otch 2 degree of depth are less than 1/2 of cylindricality dowel 1 length;
The interior dowel 4 of the described interior placement taper type of blind hole 3;
Described interior dowel 4 length are greater than the degree of depth of blind hole 3 and are less than 1/2 of cylindricality dowel 1 length;
When use first on the face of body of wall 5 with getting out hole 6, dowel of the present utility model is put into hole 6, then impact the top of cylindricality dowel 1 with hammer, the resistance that interior dowel 4 is subject to body of wall 5 enters in blind hole 3 interior dowel 4, the stressed rear spreading of otch 2, interior dowel 4 enters into the inside of cylindricality dowel 1 bottom, cylindricality dowel 1 bottom is expanded to down wedge, cylindricality dowel 1 is fixed in body of wall and can not extracts, can, on dowel surface with the article of the fixing required installation of self tapping screw, reach the object of article being firmly installed at loose metope.
Example 2: technological scheme is identical with example 1, carry out 20 experiments, dowel is arranged in aerated-block, magnetic door-inhale is installed on dowel, each door-inhale adopts a dowel to install, the situation that the suction-combining force of magnetic door-inhale is approximately 2 kilograms, every fan gate switch 1000 times, dowel non-loosening or obscission, install firm 100%.
Example 3: technological scheme is identical with example 1, carries out 20 experiments, and dowel is arranged in aerated-block, handle is installed on dowel, and each handle adopts two dowels to install, the situation that test pulling force is approximately 50 kilograms, each handle draws 50 times, and dowel non-loosening or obscission install firm 100%.
Claims (4)
1. an inverse expansion dowel, comprises cylindricality dowel (1), otch (2), blind hole (3), interior dowel (4), it is characterized in that:
Blind hole (3) is arranged at the bottom of described cylindricality dowel (1);
Otch (2) is arranged at the bottom of described cylindricality dowel (1);
In described blind hole (3), place the interior dowel 4 of taper type.
2. a kind of dowel according to claim 1, is characterized in that described blind hole (3) degree of depth is less than 1/3 of cylindricality dowel (1) length.
3. a kind of dowel according to claim 1, is characterized in that described otch (2) degree of depth is less than 1/2 of cylindricality dowel (1) length.
4. a kind of dowel according to claim 1, is characterized in that described interior dowel (4) length is greater than the degree of depth of blind hole (3) and is less than 1/2 of cylindricality dowel (1) length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003717.7U CN203641209U (en) | 2014-01-02 | 2014-01-02 | Inverted expansion wooden pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003717.7U CN203641209U (en) | 2014-01-02 | 2014-01-02 | Inverted expansion wooden pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641209U true CN203641209U (en) | 2014-06-11 |
Family
ID=50872457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420003717.7U Expired - Fee Related CN203641209U (en) | 2014-01-02 | 2014-01-02 | Inverted expansion wooden pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578403A (en) * | 2018-11-28 | 2019-04-05 | 涡阳钜将家具制造有限公司 | The new Joining Structure of wood furniture |
-
2014
- 2014-01-02 CN CN201420003717.7U patent/CN203641209U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578403A (en) * | 2018-11-28 | 2019-04-05 | 涡阳钜将家具制造有限公司 | The new Joining Structure of wood furniture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20150102 |
|
| EXPY | Termination of patent right or utility model |