CN201568421U - Rotating type self-fastening faceplate screw bolt and fastening structure thereof - Google Patents
Rotating type self-fastening faceplate screw bolt and fastening structure thereof Download PDFInfo
- Publication number
- CN201568421U CN201568421U CN2009202416444U CN200920241644U CN201568421U CN 201568421 U CN201568421 U CN 201568421U CN 2009202416444 U CN2009202416444 U CN 2009202416444U CN 200920241644 U CN200920241644 U CN 200920241644U CN 201568421 U CN201568421 U CN 201568421U
- Authority
- CN
- China
- Prior art keywords
- bar portion
- fastener
- section
- fastening
- thread section
- 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 - Lifetime
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Abstract
The utility model provides a rotating type self-fastening faceplate screw bolt and a fastening structure thereof. The screw bolt comprises a head part and a rod part which is positioned under the head part, wherein the upper side of the rod part is provided with a smooth section, and the surface of the outer circle of the smooth section is a smooth surface; the lower side of the rod part is provided with a screw thread section; the outer diameter of the smooth section is smaller than the large diameter of the screw thread section; the head part is further provided with a material discharging device which is downward protruded out of the lower end surface of the head part; and on the cross section which is perpendicular to the axial direction of the rod part, the outer diameter of the projection of the material discharging device is larger than the outer diameters of the smooth section of the rod part and the projection of the screw thread section. The rotating type self-fastening faceplate screw bolt and the fastening structure thereof are simple in structure, convenient in installation, hard in falling after installation; and furthermore, the upper-side fastened part and the lower-side fastened part can relatively move or rotate on the axial direction of the screw bolt after installation.
Description
Technical field
The utility model belongs to fastener areas, particularly relates to a kind of be used to the connect screw of panel and the fastening structure that connects by this screw.
Background technique
Common in the market screw all is made up of in conjunction with the structure of positioning work piece, screw, spring the aluminium cap usually, the function that it has used four parts and has realized locking by the method that is pressed into installation, and it has the shortcoming that assembly is many, manufacture cost is high.And when knockout screw, all screw can be taken off from fastener fully, for the frequent occasion of dismounting and lock screw of needs, locking and the knockout screw length that expends time in, and bother very much; The screw that takes off in addition is scattered easily, and by the time needing to lock often once more, there is the embarrassment that can not find screw in regular meeting.
Summary of the invention
The purpose of this utility model is to overcome shortcoming of the prior art, and a kind of rotary from the fastening panel screw on the fastener of can still being connected under the dismounting situation is provided.
For achieving the above object, the technological scheme that the utility model adopted is: a kind of rotary from the fastening panel screw, have head and the bar portion that is positioned at described lower head, the upside of described bar portion has the smooth section that external peripheral surface is a smooth surface, offer thread section on the downside of described bar portion, the external diameter of described smooth section is less than the big footpath of described thread section; The removal device that also has the lower end surface that protrudes from described head downwards on the described head, on the axial cross section perpendicular to described bar portion, the external diameter of the projection of described removal device is greater than the external diameter of the projection of the smooth section of described bar portion and thread section.
Another purpose of the present utility model provides a kind of screw fastening structure.
For this reason, the technical solution adopted in the utility model is: a kind of have a described rotary fastening structure from the fastening panel screw, comprises upside fastener and downside fastener, and the external diameter of the smooth section of described bar portion is Φ
A, the big footpath of the thread section of described bar portion is Φ
B, offering the tapped hole that matches with described thread section on the described downside fastener, described fastening structure has three working staties, and when described fastening structure was in first working state, offering bore on the described upside fastener was Φ
1Pilot hole, described bar portion is located in the described pilot hole, and Φ
A＜Φ
B≤ Φ
1When described fastening structure was in second working state, the thread section of described bar subordinate end was threaded with described downside fastener, and the upper surface of described removal device extruding upside fastener makes, and the formation bore is Φ on the described upside fastener
3Accepting hole and bore be Φ
2Joining hole, described removal device is embedded in the described accepting hole, and Φ
3＞Φ
1, Φ
A≤ Φ
2＜Φ
BWhen described fastening structure was in the 3rd working state, the thread section and the downside fastener branch of described bar portion took off, and the smooth section of described bar portion can be configured in the described joining hole vertically slidably.
Compared with prior art, the rotary advantage that has from the fastening panel screw of the present utility model is: simple in structure, simple installation, the back difficult drop-off is installed, and upside fastener after the installation and downside fastener can screw axially on relatively move or rotate.The advantage of fastening structure of the present utility model is: assembly is few, and simple installation reduces manufacturing cost and use cost, and it is thin to be suitable for plate, has wide range of applications.
Description of drawings
Accompanying drawing 1 is a plan view of the present utility model;
Accompanying drawing 2 is a plan view of the present utility model;
Accompanying drawing 3 is the process schematic representation one that the utility model is connected with fastener;
Accompanying drawing 4 is the process schematic representation two that the utility model is connected with fastener;
Accompanying drawing 5 is the process schematic representation three that the utility model is connected with fastener;
Wherein: 1, head; 2, bar portion; 11, removal device; 12, driver slot; 21, smooth section; 22, thread section; 3, upside fastener; 31, pilot hole; 32, accepting hole; 33, joining hole.
Embodiment
Shown in accompanying drawing 1, the utility model discloses a kind of rotary from the fastening panel screw, have head 1 and the bar portion 2 that is positioned at described head 1 below, offer driver slot 12 on the upper-end surface of head 1, can use pre-tightening apparatus lock screws such as automatic installation apparatus or screw-driver by driver slot 12; Wherein, described in this specification " on ", D score position relation concerns identical with the upper and lower position shown in the accompanying drawing 1.
The upside of described bar portion 2 has the smooth section 21 that external peripheral surface is a smooth surface, offers thread section 22 on the downside of described bar portion 2, and the external diameter of the smooth section of described bar portion is Φ
A, the big footpath of the thread section of described bar portion is Φ
B, and the external diameter Φ of described smooth section 21
ABig footpath Φ less than described thread section 22
BThe removal device 11 that also has the lower end surface that protrudes from described head 1 downwards on the described head 1, the external diameter of removal device 11 are Φ
3, on axial cross section perpendicular to described bar portion, Φ
3Greater than Φ
AAnd Φ
BRemoval device 11 is used to push the surface of fastener, squeezes the material on the fastener, and final removal device 11 can be partly embedded in the fastener, and changes the inherent structure on the fastener, and this design can make this product firmly connect with panel after installation.
Specifically, the rotary fastening structure from the fastening panel screw of this employing model utility comprises: upside fastener 3 and downside fastener (not shown).Offer the tapped hole that matches with described thread section 22 on the described downside fastener.
Described fastening structure has three working staties:
1, before the installation, as shown in Figure 3, offering bore on the described upside fastener 3 is Φ
1Pilot hole 31, described bar portion 2 is located in the described pilot hole 31, and the smooth section 21 of screw, the external diameter of thread section 22 and the bore of pilot hole 31 satisfy relation: Φ
A＜Φ
B≤ Φ
1
2, rotary be pressed into upside fastener 3 with punch press or special installation apparatus and mould with described from the fastening panel screw, as shown in Figure 4, the thread section 22 of described bar portion 2 lower ends is threaded with described downside fastener, in the process of press in, the upper surface of described removal device 11 extruding upside fasteners 3, part material on the upper surface of upside fastener 3 being squeezed form bore is Φ
3Accepting hole 32, and the material at pilot hole 31 places increases bore suddenly and diminishes, and to form bore be Φ
2Joining hole 33, when upside fastener 3 was threaded closely with the downside fastener after, described removal device 11 was embedded in the described accepting hole 32, because Φ
A≤ Φ
2＜Φ
B, therefore rotaryly can not come off from fastener from the fastening panel screw;
When 3, upside fastener 3 and downside fastener were removed pinning and concern, as shown in Figure 5, the thread section 22 and the downside fastener branch of described bar portion 2 took off, and the smooth section 21 of described bar portion 2 can be configured in the described joining hole 33 vertically slidably.
Above mode of execution only is explanation technical conceive of the present utility model and characteristics; its purpose is to allow the people that is familiar with this technology understand the utility model content and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to spirit of the present invention change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (2)
- One kind rotary from the fastening panel screw, have head and the bar portion that is positioned at described lower head, it is characterized in that: the upside of described bar portion has the smooth section that external peripheral surface is a smooth surface, offer thread section on the downside of described bar portion, the external diameter of described smooth section is less than the big footpath of described thread section; The removal device that also has the lower end surface that protrudes from described head downwards on the described head, on the axial cross section perpendicular to described bar portion, the external diameter of the projection of described removal device is greater than the external diameter of the projection of the smooth section of described bar portion and thread section.
- 2. a rotary fastening structure from the fastening panel screw as claimed in claim 1 comprises upside fastener and downside fastener, it is characterized in that: the external diameter of the smooth section of described bar portion is Φ A, the big footpath of the thread section of described bar portion is Φ B, offering the tapped hole that matches with described thread section on the described downside fastener, described fastening structure has three working staties, and when described fastening structure was in first working state, offering bore on the described upside fastener was Φ 1Pilot hole, described bar portion is located in the described pilot hole, and Φ A＜Φ B≤ Φ 1When described fastening structure was in second working state, the thread section of described bar subordinate end was threaded with described downside fastener, and the upper surface of described removal device extruding upside fastener makes, and the formation bore is Φ on the described upside fastener 3Accepting hole and bore be Φ 2Joining hole, described removal device is embedded in the described accepting hole, and Φ 3＞Φ 1, Φ A≤ Φ 2＜Φ BWhen described fastening structure was in the 3rd working state, the thread section and the downside fastener branch of described bar portion took off, and the smooth section of described bar portion can be configured in the described joining hole vertically slidably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202416444U CN201568421U (en) | 2009-12-02 | 2009-12-02 | Rotating type self-fastening faceplate screw bolt and fastening structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202416444U CN201568421U (en) | 2009-12-02 | 2009-12-02 | Rotating type self-fastening faceplate screw bolt and fastening structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568421U true CN201568421U (en) | 2010-09-01 |
Family
ID=42660706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202416444U Expired - Lifetime CN201568421U (en) | 2009-12-02 | 2009-12-02 | Rotating type self-fastening faceplate screw bolt and fastening structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201568421U (en) |
-
2009
- 2009-12-02 CN CN2009202416444U patent/CN201568421U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |
|
| CX01 | Expiry of patent term |