CN208417183U - A kind of inverter cover board locks the self tapping anti-loosing screw structure used - Google Patents
A kind of inverter cover board locks the self tapping anti-loosing screw structure used Download PDFInfo
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- CN208417183U CN208417183U CN201820187741.9U CN201820187741U CN208417183U CN 208417183 U CN208417183 U CN 208417183U CN 201820187741 U CN201820187741 U CN 201820187741U CN 208417183 U CN208417183 U CN 208417183U
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Abstract
The utility model relates to a kind of inverter cover boards to lock the self tapping anti-loosing screw structure used, including nut and screw rod, after nut direction is defined as, it is characterized in that, screw rod includes guide part, self-tapping screw section and the guide rod positioned at front end, guide part has smooth outer wall, and self-tapping screw section and guide rod are sequentially arranged in the rear of guide part, and the major diameter of self-tapping screw section is greater than the diameter of the screw mounting hole on cover board.The utility model can be such that screw pine when detachable cover plate does not take off, and when needing to take out screw, screw can be dismantled again, and the utility model can be such that screw is accurately quickly oriented to by guide part.The utility model structure is simple, at low cost, technical maturity, high reliablity, is suitable for arbitrary dimension, cover board cabinet package assembly demand.
Description
Technical field
Inverter cover board is connected to the bolt structure that the placement on inverter box body loosens the utility model relates to a kind of.
Background technique
When the cover board of inverter is connect with cabinet at present or as shown in Figure 1, being paid using plain screw lock or such as Fig. 2
It is shown, it is used with plastic cement circlip or stainless steel circlip collocation screw.
To as shown in Figure 1 the case where being paid using plain screw lock, screw 5 does not have guide frame, and cover board 2 and cabinet 3 are locked
Fu Shiruo inclination, then thread is easy to wear, and the iron pin of generation also will affect subsequent installation, there is also stuck phenomenon when serious.And
The disassembly of screw 5 is easily lost when removing, and is easily obscured when type is more, especially right angle setting when need professional to assist installation,
Working efficiency is low.
Also useful plastic cement circlip or stainless steel circlip collocation screw use on existing market, as shown in Fig. 2, in figure, serial number 6
Indicate circlip and screw association.In this case, special special circlip and special screw are needed, causes process costs high, and
Specific purpose tool is needed to assemble, process is more complex.After failure, follow-up maintenance is difficult, and clip spring structure be easy to cause cover board or cabinet
Damage, influence appearance looks elegant and its service performance.
For both the above conventional structure, when needing to be used in the higher occasion of outdoor inverter, detachable cover plate frequency
High-efficient homework cannot be played, the key effect for preventing mistakes and omissions, loss, follow-up maintenance is not more played.
Summary of the invention
The purpose of this utility model is so that screw is with guide function, and after detachable cover plate, and screw will not loosen, and just
In disassembly.
In order to achieve the above object, the technical solution of the utility model is locked there is provided a kind of inverter cover board and is used
Self tapping anti-loosing screw structure, including nut and screw rod, after nut direction is defined as, which is characterized in that screw rod includes position
In the guide part of front end, self-tapping screw section and guide rod, guide part has smooth outer wall, and self-tapping screw section and guide rod are successively
Set on the rear of guide part, the major diameter of self-tapping screw section is greater than the diameter of the screw mounting hole on cover board.
Preferably, transition is connected by intensity fillet part between the nut and the screw rod.
The utility model can be such that screw pine when detachable cover plate does not take off, and when needing to take out screw, screw can be dismantled again, and
And the utility model can be such that screw is accurately quickly oriented to by guide part.The utility model structure is simple, at low cost, technique
Mature, high reliablity, is suitable for arbitrary dimension, cover board cabinet package assembly demand.
Detailed description of the invention
Fig. 1 is a kind of attachment structure schematic diagram of existing cover board and cabinet；
Fig. 2 is another attachment structure schematic diagram of existing cover board and cabinet；
Fig. 3 is the structural schematic diagram of the utility model；
Fig. 4 is the application schematic diagram of the utility model；
Fig. 5 A and Fig. 5 B are the guiding process schematic of the utility model；
Fig. 6 A to Fig. 6 C is the thread tapping process schematic of the utility model；
Fig. 7 A is that the utility model is assembled to the schematic diagram after cover board；
Fig. 7 B is the partial enlargement diagram of part A in Fig. 7 A.
Specific embodiment
To be clearer and more comprehensible the utility model, hereby with preferred embodiment, and attached drawing is cooperated to be described in detail below.
As shown in Figures 3 and 4, a kind of inverter cover board provided by the utility model locks the self tapping anti-loosing screw knot used
Structure, including nut 1.5 and screw rod connect transition by intensity fillet part 1.4 between nut 1.5 and screw rod.Screw rod is divided into three sections,
It is respectively as follows: guide part 1.1, self-tapping screw section 1.2 and the guide rod 1.3 positioned at front end.Guide part 1.1 has smooth outer wall,
Thereon without screw thread.Self-tapping screw section 1.2 and guide rod 1.3 are sequentially arranged in the rear of guide part 1.1.Self-tapping screw section 1.2
Major diameter be greater than cover board 2 on screw mounting hole diameter.
As shown in Fig. 5 A and Fig. 5 B, the guide part 1.1 of screw tail portion provided by the utility model rises altogether during the installation process
To guiding role twice.
When the utility model is assembled on cover board, guide part 1.1 is introduced into advance in cover board pre-punched hole, completes to lead for the first time
To so that this subsequent screw tapping procedures vertical operation, is unlikely to stuck when screw tapping, and guaranteeing the spiral shell of tapping in cover board hole
Line quality is high, and when follow-up maintenance is reusable, and screw is freely disassembled.
When being directed to cover board being assembled into cabinet for the second time, the guide part 1.1 of screw tail portion is introduced into PEM Nut column 4 in advance
In, so that the PEM Nut column 4 on entire assembling process screw and cabinet is guaranteed concentricity, screw tail portion is avoided to rub with PEM Nut column
It wipes, spin and scratch surface, influence beautiful and subsequent assembling.
In conjunction with Fig. 6 A to Fig. 6 C, the utility model may be implemented screw thread tapping, and guide part 1.1 is introduced into advance when thread tapping
In hole realize self- steering, using screw material hardness be higher than cover board material hardness, screw will cut, squeeze cover board inner hole and
Tapping tooth, until screw thread tapping is completed and screws in installation.
As shown in figs. 7 a and 7b, it is that screw tapping screw thread tooth is installed into lid that it is not de-, which to can be realized screw pine, for the utility model
After plate, it can not be taken out in no external force booster action.Due to the restriction effect of internal screw thread tooth on cover board, screw quilt
Cover board is limited in the screw guide rod of certain activity, that is, is formed pine and do not taken off.It, can be first if needing to take out screw when follow-up maintenance
Screw tail portion is withstood, screw is i.e. detachable along the opposite direction back-out of screw thread.
For installing the cover board of this self tapping captive screw, after the installation of screw self tapping, cover board, which arbitrarily picks and places, will not all worry
The loss of screw, allows cover board to be integrally formed with screw, has reached the pine of screw on the cover board and has not taken off principle.
Claims (2)
1. a kind of inverter cover board locks the self tapping anti-loosing screw structure used, including nut (1.5) and screw rod, by nut
(1.5) after direction is defined as, which is characterized in that screw rod includes the guide part (1.1) for being located at front end, self-tapping screw section
(1.2) and guide rod (1.3), guide part (1.1) have smooth outer wall, and self-tapping screw section (1.2) and guide rod (1.3) are successively set
In the rear of guide part (1.1), the major diameter of self-tapping screw section (1.2) is greater than the diameter of guide rod (1.3), self-tapping screw section
(1.2) major diameter is greater than the diameter of the screw mounting hole on cover board (2).
2. a kind of inverter cover board as described in claim 1 locks the self tapping anti-loosing screw structure used, which is characterized in that institute
It states and connect transition by intensity fillet part (1.4) between nut (1.5) and the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820187741.9U CN208417183U (en) | 2018-02-02 | 2018-02-02 | A kind of inverter cover board locks the self tapping anti-loosing screw structure used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820187741.9U CN208417183U (en) | 2018-02-02 | 2018-02-02 | A kind of inverter cover board locks the self tapping anti-loosing screw structure used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208417183U true CN208417183U (en) | 2019-01-22 |
Family
ID=65121008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820187741.9U Active CN208417183U (en) | 2018-02-02 | 2018-02-02 | A kind of inverter cover board locks the self tapping anti-loosing screw structure used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208417183U (en) |
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2018
- 2018-02-02 CN CN201820187741.9U patent/CN208417183U/en active Active
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