CN214404264U - Expansion bolt with large expansion amount - Google Patents
Expansion bolt with large expansion amount Download PDFInfo
- Publication number
- CN214404264U CN214404264U CN202120114556.9U CN202120114556U CN214404264U CN 214404264 U CN214404264 U CN 214404264U CN 202120114556 U CN202120114556 U CN 202120114556U CN 214404264 U CN214404264 U CN 214404264U
- Authority
- CN
- China
- Prior art keywords
- expansion
- expansion sleeve
- sleeve
- iron plate
- bolt
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052742 iron Inorganic materials 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000011456 concrete brick Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
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- Joining Of Building Structures In Genera (AREA)
Abstract
An expansion bolt with large expansion amount is mainly used for mounting an air conditioner bracket and a billboard frame on the wall surface of an air concrete brick of a building and comprises an expansion screw rod and an expansion sleeve, wherein the expansion sleeve is cylindrical and is formed by shearing, stamping and rolling an iron plate, three short cutting seams are symmetrically punched on the left side of the expansion sleeve, the left side of the expansion sleeve is divided into three parts by the short cutting seams, and the left part of the expansion sleeve is formed by a double-layer iron plate; the expansion screw is rolled into its cylinder during the rolling process for making the expansion sleeve. The utility model has the advantages that: its simple structure easily makes, convenient to use, low in cost, the utility model discloses an expansion is ordinary expansion bolts's twice, both can use on the wall of stereoplasm, also can use on the softer air concrete brick wall of material, can increase expansion bolts's expansion effectively, improves the fastness that bolt and wall combine.
Description
Technical Field
The utility model relates to an expansion bolts, specific saying so relates to an expansion bolts of big inflation volume, and its mainly used uses when installing air conditioner support and bill-board frame on the air concrete brick wall of building.
Background
The expansion bolts are widely used in the installation process of the outdoor unit of the split air conditioner, and the expansion bolts are used for fixing the support of the outdoor unit of the air conditioner on the outer wall of a building. It features low cost, convenient use and high bearing capacity, so it is widely used in connection of building and various equipments. The existing expansion bolt is composed of an expansion screw rod, an expansion sleeve and a nut gasket, wherein the expansion sleeve and the nut gasket are sleeved outside the expansion screw rod, when the expansion bolt is used, only a hole with a diameter slightly larger than that of the expansion sleeve is drilled on a wall body, the expansion bolt is inserted into the wall body, and the expansion sleeve is expanded by a conical head on the expansion screw rod through rotating the nut exposed on an external screw rod on the wall surface, so that the expansion bolt is tightly connected with the wall body. However, the existing expansion bolts in the market at present have a fatal defect that the expansion amount of the bolts is often found to be insufficient when the expansion bolts are used on the air concrete brick wall made of softer material, so that the bolts cannot be firmly connected with the wall body.
Disclosure of Invention
An object of the utility model is to overcome prior art not enough, provide an expansion bolts of big inflation volume, both can use on the wall of stereoplasm, also can use on the softer air concrete brick wall of material, can increase expansion bolts's inflation volume effectively, improve the fastness that bolt and wall combine.
In order to achieve the above purpose, the utility model discloses a method is: an expansion bolt with large expansion amount comprises an expansion screw rod and an expansion sleeve, wherein the expansion sleeve is cylindrical and is formed by shearing, stamping and rolling an iron plate, three short cutting seams are symmetrically punched on the left side of the expansion sleeve, the left side of the expansion sleeve is divided into three parts by the short cutting seams, so that the expansion sleeve can expand outwards when the left side of the expansion sleeve is subjected to an outward radial force, the left side part of the expansion sleeve is formed by a double-layer iron plate, and the length of the double-layer iron plate structure is smaller than that of the short cutting seams; the expansion screw is arranged in the expansion sleeve, a conical head is arranged at the left end of the expansion screw, a section of external thread is arranged at the right end of the expansion screw, a gasket and a nut are arranged on the external thread, the outer diameter of the left half part of the cylinder between the conical head and the external thread is smaller than that of the right half part of the cylinder, the difference value of the diameters of the conical head and the external thread is 2 times of the thickness of an iron plate used for manufacturing the expansion sleeve, and the length of the left half part of the cylinder is larger than that of a double-layer iron plate structure on the expansion sleeve.
The utility model discloses a use method is: the method comprises the steps of drilling a hole with a diameter slightly larger than that of an expansion sleeve on a wall body, inserting the expansion bolt into the wall body, and rotating a nut exposed on an external screw rod on the wall surface to enable a conical head on the expansion screw rod to expand the expansion sleeve, so that the expansion bolt can be tightly connected with the wall body.
The utility model has the advantages that: its simple structure easily makes, convenient to use, low in cost, the utility model discloses an expansion is ordinary expansion bolts's twice, both can use on the wall of stereoplasm, also can use on the softer air concrete brick wall of material, can increase expansion bolts's expansion effectively, improves the fastness that bolt and wall combine.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a cross-sectional view of the expansion sleeve.
Fig. 3 is a front view of the expansion screw.
In the figure, 1 is an expansion sleeve, 2 is an expansion screw, 3 is a washer, 4 is a nut, 5 is a short cutting slot, 6 is a conical head, and 7 is an external thread.
Detailed Description
In the figure, the expansion bolt with large expansion amount comprises an expansion screw rod 2 and an expansion sleeve 1, wherein the expansion sleeve 1 is cylindrical and is formed by shearing, stamping and rolling an iron plate, three short cutting seams 5 are symmetrically punched on the left side of the expansion sleeve 1, the left side of the expansion sleeve 1 is divided into three parts by the short cutting seams 5, the left side part of the expansion sleeve 1 is formed by a double-layer iron plate, and the length of the double-layer iron plate structure is smaller than that of the short cutting seams 5; the expansion screw 2 is rolled into the expansion sleeve 1 in the rolling process of manufacturing the expansion sleeve 1, a conical head 6 is manufactured at the left end of the expansion screw 2, a section of external thread 7 is manufactured at the right end of the expansion screw 2, a gasket 3 and a nut 4 are mounted on the external thread 7, the outer diameter of the left half part of a cylinder between the conical head 6 and the external thread 7 is smaller than that of the right half part, the difference value of the diameters of the two parts is 2 times of the thickness of an iron plate used for manufacturing the expansion sleeve 1, and the length of the left half part of the cylinder is larger than that of a double-layer iron plate structure on the expansion sleeve 1.
Claims (3)
1. The utility model provides an expansion bolts of big inflation volume, includes expansion screw and expansion sleeve, characterized by: the expansion sleeve is cylindrical and is formed by cutting, stamping and rolling an iron plate, three short cutting seams are symmetrically punched on the left side of the expansion sleeve, the left side of the expansion sleeve is divided into three pieces by the short cutting seams, and the left part of the expansion sleeve is formed by double layers of iron plates; the expansion screw is arranged in the expansion sleeve, a conical head is arranged at the left end of the expansion screw, a section of external thread is arranged at the right end of the expansion screw, a gasket and a nut are arranged on the external thread, the outer diameter of the left half part of the cylinder between the conical head and the external thread is smaller than that of the right half part of the cylinder, and the difference value of the diameters of the conical head and the external thread is 2 times of the thickness of an iron plate used for manufacturing the expansion sleeve.
2. A high expansion bolt as claimed in claim 1, wherein: the length of the double-layer iron plate structure is smaller than that of the short cutting seam.
3. A high expansion bolt as claimed in claim 1, wherein: the length of the left half part of the cylinder is larger than that of the double-layer iron plate structure on the expansion sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120114556.9U CN214404264U (en) | 2021-01-16 | 2021-01-16 | Expansion bolt with large expansion amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120114556.9U CN214404264U (en) | 2021-01-16 | 2021-01-16 | Expansion bolt with large expansion amount |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214404264U true CN214404264U (en) | 2021-10-15 |
Family
ID=78046065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120114556.9U Expired - Fee Related CN214404264U (en) | 2021-01-16 | 2021-01-16 | Expansion bolt with large expansion amount |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214404264U (en) |
-
2021
- 2021-01-16 CN CN202120114556.9U patent/CN214404264U/en not_active Expired - Fee Related
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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: 20211015 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |