CN2163264Y - Pressure setting tight nut - Google Patents
Pressure setting tight nut Download PDFInfo
- Publication number
- CN2163264Y CN2163264Y CN 93236543 CN93236543U CN2163264Y CN 2163264 Y CN2163264 Y CN 2163264Y CN 93236543 CN93236543 CN 93236543 CN 93236543 U CN93236543 U CN 93236543U CN 2163264 Y CN2163264 Y CN 2163264Y
- Authority
- CN
- China
- Prior art keywords
- pressure setting
- utility
- model
- thickness
- diameter
- 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
Landscapes
- Connection Of Plates (AREA)
Abstract
The utility model which discloses a pressure setting tight nut with blind holes is used for tightly fixing and connecting a metal plate. The excircle of the pressure setting part of the utility model is provided with a centripetal skewed slot and two steps connected by the centripetal skewed slot, the thickness and the diameter of the step arranged on the end of the pressure setting part are smaller than the thickness and the diameter of a second step, and the periphery of the excircle of the second step is provided with axial teeth. The utility model has internal thread, the internal thread is not led to pressure setting ends, coupling strength is high, the utility model is anti-vibration and compact, and the appearance quality of the connected metal plate is improved.
Description
The utility model relates to a kind of fastening coupling device, particularly a kind of pressing type tightening nut.
At present, with the cabinet panel of the fastening connection metal of riveting screw, furniture etc., all be that the screw riveting is gone in the through hole of panel, for attractive in appearance, must equating ailhead Puttying and careful paint hide the nail hole again, its shortcoming is a complex process, take material, rivet is vibrated or is impacted easily and become flexible, and liquid, gas etc. easily infiltrate in the panel from the nail hole, and the time is just damaged finish paint or the variable color of turning to be yellow than long, also influence linking intensity, the way that has human to paste one deck filler panel hides the nail hole, has both increased cost, can not tackle the problem at its root again.
The purpose of this utility model is, improves at the deficiency that prior art must through hole connects, and provides a kind of linking intensity that can guarantee not reveal the blind hole pressing type tightening nut of following closely the hole again.
Technical solution of the present utility model is, designs a kind of special construction at the cylindrical of nut press mounting portion, and just it is press fit in the blind hole at the sheet metal back side, can rely on the plastic deformation of blind hole interior metal, plays fastening anastomosis.Specifically, the cylindrical of the utility model nut press mounting portion has two steps of skewed slot entad and connection thereof, and the thickness of end step and diameter are less than the thickness and the diameter of second step, and this has axial tooth the second step excircle; Nut has not car to the internal thread of bottom.
With reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in detail.
Fig. 1 is the utility model overall structure schematic representation.
As shown in the figure, two steps 3,1 that the cylindrical of pressing type tightening nut press-fit portion has inclined hole 2 entad and connects, the thickness of end step 3 and diameter are less than the thickness and the diameter of second step 1, and the second step outer annulus edge has axial tooth 6, and nut has not car to the internal thread 7 of bottom.Blind hole 4 diameters at metal surface 5 back sides are identical with nut end step 3 diameters, when nut is pressed into blind hole 4, step 1 lower end surface angle is clamp-oned the metallic sheet material cutting-out (root does not cut off) at blind hole edge in the skewed slot 2, and step 1 is pressed in the blind hole together with the axial tooth 6 of its outer annulus edge.The axial tooth 6 that the utility model utilization is pressed in the blind hole 4 reaches antitorque purpose, utilizes the panel material riveting of clamp-oning in the groove 2 to live the purpose that step 3 reaches tension, and the crush resistance of axial tooth and hole wall also plays the effect of part tension.Because the internal thread of nut not car has guaranteed that the bolt that is screwed into can not rouse the nut that maybe will be press fit in the blind hole with the sheet metal top and eject on earth.Experimental result shows that the aluminium panel of the utility model and 4mm and above thickness thereof press-fits the back linking intensity and can reach:
Screw, bolt axial tension (newton) moment of torsion (Newton meter)
The minimum minimum breakdown torque of pulling force allowable torque that destroys of specification pulling force allowable
M
3300 500 0.6 0.8
M
4600 1000 1.2 2
M
51200 2000 2 4
The strength criterion that grade bolt such as meets, shock-resistant, vibration can be applied to the connection of sheet metal such as aluminium, steel or other metal parts, changed traditional through hole connecting mode, simplified flow, reduced cost, improved connect the appearance quality of sheet metal.
Claims (1)
1, a kind of blind hole pressing type tightening nut that is used for fastening connection sheet metal is characterized in that:
(1) cylindrical of press-fit portion has two steps of skewed slot entad and connection thereof, and the thickness of end step and diameter are less than the thickness and the diameter of second step, and the second step outer annulus edge has axial tooth,
(2) nut has not car to the internal thread of bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93236543 CN2163264Y (en) | 1993-03-30 | 1993-03-30 | Pressure setting tight nut |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93236543 CN2163264Y (en) | 1993-03-30 | 1993-03-30 | Pressure setting tight nut |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2163264Y true CN2163264Y (en) | 1994-04-27 |
Family
ID=33811698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93236543 Expired - Fee Related CN2163264Y (en) | 1993-03-30 | 1993-03-30 | Pressure setting tight nut |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2163264Y (en) |
-
1993
- 1993-03-30 CN CN 93236543 patent/CN2163264Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |