CN2878769Y - Expanding screw - Google Patents
Expanding screw Download PDFInfo
- Publication number
- CN2878769Y CN2878769Y CN 200620078491 CN200620078491U CN2878769Y CN 2878769 Y CN2878769 Y CN 2878769Y CN 200620078491 CN200620078491 CN 200620078491 CN 200620078491 U CN200620078491 U CN 200620078491U CN 2878769 Y CN2878769 Y CN 2878769Y
- Authority
- CN
- China
- Prior art keywords
- pole
- sleeve tube
- bolt
- expansion sleeve
- expanding
- 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
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Abstract
The utility model discloses a expanding-type screw, which consists of a bolt, a sleeve tube, a plain spacer, a spring washer and a nut. The expanding-type screw is characterized in that the sleeve tube is divided as a double-pole expanding sleeve tube, a single pole expanding sleeve tube and a extruding sleeve tube. The two ends of the double pole expanding sleeve and the one end of the single pole expanding sleeve tube are all opened with a plurality of the slot mouth. The two ends of the extruding sleeve tube is a slop cone ring area. A double-pole expanding sleeve tube and above and the extruding sleeve tube as same as the quantity of the double-pole expanding sleeve tube as well as a single pole expanding sleeve tube are placed on the bolt. These quantities of the extruding sleeve tubes are put between the separate expanding sleeve tubes. The single pole sleeve tube is sleeved at last. The end of the opened slot mouth is towards one end the corn-model expanding top of the bolt so that the top and the extruding sleeve tube are pushed to the single and double pole expanding tubes. The two ends of the double-pole and the opened slot mouth of the single expanding sleeve tube are tensioned simultaneously by the force after extruding to bracket the hole wall and increase largely the tightening ability.
Description
Technical field
The utility model relates to a kind of fastening piece, particularly relates to a kind of setscrew that improves fixed effect, belongs to the mechanical parts technical field.
Background technique
Setscrew is widely used in producing, living, and it can be fixed to object, equipment on wall or the similar articles easily.At present, the maximum a kind of setscrew of known use is made of bolt, sleeve pipe, plate washer, spring washer, nut.One end of bolt is provided with screw thread, and the other end is provided with the taper expanded head; One end of sleeve pipe offers several notch vertically, and the end that bolt is provided with screw thread passes sleeve pipe, plate washer, spring washer and nut successively and links, and the end that sleeve pipe offers notch is provided with an end of taper expanded head towards bolt.During use, earlier bore one and the hole that is complementary of setscrew at both fixed positions of wall or similar articles with drilling tool, then setscrew is filled in the hole, screw in nut, screw-in along with nut, bolt moves outside the hole under the effect of nut tightening force gradually, the taper expanded head contact of bolt is gone into sleeve pipe and is offered in notch one end, make sleeve pipe offer notch one end be squeezed spalling distortion and perk, thereby setscrew is fixed in wall or the similar articles by the frictional force between bolt and sleeve pipe and sleeve pipe and the hole wall.This expansion of structure screw, its deficiency is, because sleeve pipe is that an overall structure and instrument one end are offered notch, when sleeve pipe is squeezed, only offer notch place dilatancy and can play fixation, its fixation is limited, especially run into sleeve pipe and offer slot-open-section hole wall quality when soft, its fixation is more limited, works as mounting article, equipment is during particularly than heavy object and vibratory equipment, it is loosening to expand screw, even the situation of slippage, more easily cause dangerous accident and unnecessary loss, can not well adapt to production, the requirement of living safety.
Technology contents
The purpose of this utility model is to overcome above-mentioned deficiency, and provides a kind of fixation good setscrew.
To achieve these goals, the utility model is by the following technical solutions:
Setscrew of the present utility model, it is made up of bolt, sleeve pipe, plate washer, spring washer and nut, and an end of bolt is provided with screw thread, and the other end is provided with the taper expanded head; Sleeve pipe is divided into three kinds of bipolar expansion sleeve, one pole expansion sleeve and squeezing bushings; The two ends of bipolar expansion sleeve all offer several notch vertically; One end of one pole expansion sleeve offers several notch vertically; The two ends of squeezing bushing all are the oblique cone anchor ring; More than one bipolar expansion sleeve, squeezing bushing and an one pole expansion sleeve identical with bipolar expansion sleeve quantity are placed on the bolt by the bolt thread end, the squeezing bushing of described quantity is placed between each expansion sleeve, the most last being inserted in of described one pole expansion sleeve, it offers the notch end towards bolt taper expanded head one end, then, be inserted in or screw in plate washer, spring washer and nut successively at the bolt thread end.
In the utility model technique scheme, described bipolar expansion sleeve and described squeezing bushing quantity all are one.When adopting bipolar expansion sleeve and squeezing bushing quantity all to be one, structure is the simplest; When adopting plural bipolar expansion sleeve and squeezing bushing, fastening effect is stronger.
As mentioned above, because sleeve pipe of the present utility model is divided into bipolar expansion sleeve, one pole expansion sleeve and squeezing bushing, one end of the two ends of bipolar expansion sleeve and one pole expansion sleeve all offers notch, after screwing in nut, the two ends of bipolar expansion sleeve and one pole expansion sleeve are offered the notch end and pushed by the contact of bolt taper expanded head and squeezing bushing, stressed expansion simultaneously, shore hole wall, many places produce expansion, therefore its fixed performance is preferable, even hole wall has portion of tissue soft, can not influence its fastening force yet.
Description of drawings
Fig. 1 is the utility model embodiment one a perspective view.
Fig. 2 is the utility model embodiment one a user mode schematic representation.
Fig. 3 is the utility model embodiment two a perspective view.
Fig. 4 is the view of the utility model embodiment two when being used in the soft cinclides of part hole wall quality.
Among the figure: bolt 1 screw thread 10 taper expanded head 11 bipolar expansion sleeve 2 one pole expansion sleeves 3 squeezing bushings 4 plate washers 5 spring washers 6 nuts 7 notches 8 oblique cone anchor rings 9
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
Embodiment one
As shown in Figure 1, setscrew embodiment one of the present utility model is made of bolt 1, bipolar expansion sleeve 2, one pole expansion sleeve 3, squeezing bushing 4, plate washer 5, spring washer 6, nut 7.Bolt 1 one ends are provided with screw thread 10, and the other end is provided with taper expanded head 11; The two ends of two one pole expansion sleeves 2 all offer several notch 8 vertically; One pole expansion sleeve 3 one ends offer several notch 8 vertically; The two ends of squeezing bushing 4 all are oblique cone anchor ring 9; Bolt 1 is provided with screw thread 10 1 ends and passes bipolar expansion sleeve 2, squeezing bushing 4, one pole expansion sleeve 3, plate washer 5, spring washer 6 in proper order and link with nut 7, and one pole expansion sleeve 3 offers an end of notch 8 towards bolt 1 taper expanded head 11 1 ends.
As shown in Figure 2, during use, earlier the whole group of this device is implanted in the set hole, screw in nut 7, screw-in along with nut 7, bolt 1 progressively moves outside the hole under nut 7 tightening force effects, the taper expanded head 11 of bolt 1 and squeezing bushing 4 contacts are gone into the two ends and the one pole expansion sleeve 3 of bipolar expansion sleeve 2 and are offered in notch 8 one ends, make the two ends of bipolar expansion sleeve 2 and a end that one pole expansion sleeve 3 is offered notch 8 dilatating and deformable simultaneously that is squeezed, shore hole wall, many places produce expansion, can guarantee that setscrew firmly implants in the hole.
Embodiment two
As shown in Figure 3, the utility model embodiment two is that with embodiment's one difference the quantity of bipolar expansion sleeve 2 and squeezing bushing 4 all becomes two.Two bipolar expansion sleeves 2, two squeezing bushings 4 and one pole expansion sleeve 3 are provided with screw thread 10 1 ends by bolt 1 and are placed on the bolt 1, two squeezing bushings 4 are placed on respectively between each expansion sleeve, one pole expansion sleeve 3 the most last being inserted in, it offers notch 8 one ends towards bolt 1 taper expanded head 11 1 ends, then, be inserted in or screw in plate washer 5, spring washer 6 and nut 7 successively at bolt 1 set screw thread 10 ends.
As shown in Figure 4, when acting on the comparatively soft cinclides of part hole wall quality, because the sleeve pipe of this group device is constituted by two bipolar expansion sleeves 2, two squeezing bushings 4 and one pole expansion sleeve 3, the expansion helical pitch is longer, after screwing in nut 7, the two ends of two bipolar expansion sleeves 2 and one pole expansion sleeve 3 are offered taper expanded head 11 and the extruding of two squeezing bushings, 4 contacts that notch 8 one ends are subjected to bolt 1, and dilatancy is shored hole wall simultaneously.So when the end of setscrew is enough supported because of the soft shortage of hole wall quality, still can borrow the dilatating and deformable of its multistage to produce the bloated location of many places support, obtain very firm effect.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. setscrew, it is made up of bolt, sleeve pipe, plate washer, spring washer and nut, and an end of bolt is provided with screw thread, and the other end is provided with the taper expanded head; It is characterized in that sleeve pipe is divided into three kinds of bipolar expansion sleeve, one pole expansion sleeve and squeezing bushings; The two ends of bipolar expansion sleeve all offer several notch vertically; One end of one pole expansion sleeve offers several notch vertically; The two ends of squeezing bushing all are the oblique cone anchor ring; More than one bipolar expansion sleeve, squeezing bushing and an one pole expansion sleeve identical with bipolar expansion sleeve quantity are placed on the bolt by the bolt thread end, the squeezing bushing of described quantity is placed between each expansion sleeve, the most last being inserted in of described one pole expansion sleeve, it offers the notch end towards bolt taper expanded head one end, then, be inserted in or screw in plate washer, spring washer and nut successively at the bolt thread end.
2. setscrew according to claim 1 is characterized in that, described bipolar expansion sleeve and described squeezing bushing quantity all are one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620078491 CN2878769Y (en) | 2006-03-02 | 2006-03-02 | Expanding screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620078491 CN2878769Y (en) | 2006-03-02 | 2006-03-02 | Expanding screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2878769Y true CN2878769Y (en) | 2007-03-14 |
Family
ID=37861184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620078491 Expired - Fee Related CN2878769Y (en) | 2006-03-02 | 2006-03-02 | Expanding screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2878769Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644640A (en) * | 2012-04-10 | 2012-08-22 | 余爱芳 | Bidirectional reverse-propelling fastening bolt |
| CN101363468B (en) * | 2007-08-08 | 2013-06-12 | 王振国 | Expansion screw bolt of double expansion sleeve pipe and method for manufacturing same |
| CN105805116A (en) * | 2016-04-28 | 2016-07-27 | 嘉善固威紧固件有限公司 | Expansion bolt with dual expansion tubes |
| CN113802473A (en) * | 2020-06-17 | 2021-12-17 | 檀国大学校产学协力团 | Anchor rod comprising a plurality of expansion sleeves |
-
2006
- 2006-03-02 CN CN 200620078491 patent/CN2878769Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363468B (en) * | 2007-08-08 | 2013-06-12 | 王振国 | Expansion screw bolt of double expansion sleeve pipe and method for manufacturing same |
| CN102644640A (en) * | 2012-04-10 | 2012-08-22 | 余爱芳 | Bidirectional reverse-propelling fastening bolt |
| CN105805116A (en) * | 2016-04-28 | 2016-07-27 | 嘉善固威紧固件有限公司 | Expansion bolt with dual expansion tubes |
| CN105805116B (en) * | 2016-04-28 | 2018-03-13 | 佛山市杭兴五金件有限公司 | Double expansion tube expansion bolts |
| CN113802473A (en) * | 2020-06-17 | 2021-12-17 | 檀国大学校产学协力团 | Anchor rod comprising a plurality of expansion sleeves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070314 Termination date: 20100302 |