CN201584889U - Anti-dropping bolt structure of frequency converter - Google Patents
Anti-dropping bolt structure of frequency converter Download PDFInfo
- Publication number
- CN201584889U CN201584889U CN2009202830957U CN200920283095U CN201584889U CN 201584889 U CN201584889 U CN 201584889U CN 2009202830957 U CN2009202830957 U CN 2009202830957U CN 200920283095 U CN200920283095 U CN 200920283095U CN 201584889 U CN201584889 U CN 201584889U
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- screw
- hole
- frequency converter
- diameter
- utility
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Abstract
The utility model relates to an anti-dropping bolt structure of a frequency converter, which comprises a first connecting piece and a second connecting piece that are connected with each other by a bolt, wherein the first connecting piece is provided with a through hole, the diameter of the through hole is between the external diameter of the thread at the front part of the bolt and the diameter of the screw rod at the middle part, and the thread at the front part of the bolt is screwed into and pass through the through hole. In the utility model, by arranging the anti-dropping bolt structure, the assembly and disassembly of the bolt can be conveniently conducted, thus improving the assembly and disassembly efficiency and enhancing the safety of equipment.
Description
Technical field
The utility model relates to the slip-off preventing bolt structure of industry control electric product field, especially frequency converter.
Background technology
Frequency converter is the AC power that power frequency supply is transformed into various frequencies, and the components and parts with the variable-speed operation of realizing motor have obtained using widely in industrial equipment.As shown in Figure 1, some frequency converter products are provided with the operational module 2 that can separate with frequency converter main body 3 at present, to realize Long-distance Control, have made things convenient for operating personnel's application; After the Long-distance Control end of job, separable operational module 2 need be put in back frequency converter main body 3.In this cargo handling process, need to disassemble and mounting screw 1, not only loading and unloading trouble, and cause dropping and losing of screw easily, if screw drops in main equipment, also may cause danger such as short-circuit fire.
The utility model content
The applicant provides a kind of slip-off preventing bolt structure of frequency converter at shortcomings such as above-mentioned existing frequency converter product screwing easily come off, has made things convenient for cargo handling process, has increased the fail safe of equipment.
The technical scheme that the utility model adopted is as follows:
A kind of slip-off preventing bolt structure of frequency converter, comprise first connector and second connector that connect by screw, first connector is provided with through hole, through-hole diameter is between described screw front threads external diameter and middle part screw diameter, and described screw front threads screw-in also passes through described through hole.
The utility model can carry out the dismounting of screw easily by the bolt structure of slip-off preventing is set, and has improved dismounting efficient, has increased the fail safe of equipment.
Description of drawings
Fig. 1 is the stereogram of frequency converter;
Fig. 2 is the partial sectional view of the utility model structure;
Fig. 3 is the partial sectional view of lid part;
Fig. 4 is the cutaway view of screw.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described.
As shown in Figure 1, the slip-off preventing bolt structure of frequency converter described in the utility model comprises that both are connected and fixed by screw 1 as the separable operational module 2 of first connector and frequency converter main body 3 as second connector; As Fig. 2, shown in Figure 3, the housing of operational module 2 (comprising lower house) is provided with a through hole 4, through hole 4 diameter D are greater than the middle part screw diameter d of as shown in Figure 4 screw 1, and front threads external diameter M less than screw 1, for example in a specific embodiment, adopt the screw of M3 specification to connect, the front threads external diameter M of screw is 3.0mm, the middle part screw diameter d of screw is 2.6mm, and then the diameter D of through hole 4 can value be 2.75mm.When practical set, at first the front threads of screw 1 was revolved through hole 4, because diameter of thread M is greater than the diameter D of housing through-hole 4, and housing is plastic parts, therefore is equivalent to screw thread to its tapping, but can not destroy through-hole diameter D fully; When anterior thread segment fully by after the through hole 4 because the diameter d of middle part spiro rod section is less than through-hole diameter D, so screw 1 can be up and down through hole 4 in, spacing owing to front threads and rear screw head, screw can not come off from the through hole 4 of housing.This moment is further fastening as the separable operational module 2 of first connector and frequency converter main body 3 as second connector with screw 1, as shown in Figure 1, can finish the screw purpose of connecting.
The utility model adopts in that the through hole of diameter between described screw front threads external diameter and middle part screw diameter is set on the housing is spacing to the screw realization, guaranteed that the situation of toner screw can not take place operating personnel when dismounting, after the lock out operation module, screw still is retained on the operational module, made things convenient for the dismounting of screw, improve dismounting efficient, increased the fail safe of equipment.
More than describing is to explanation of the present utility model, is not the qualification to utility model, and the utility model institute restricted portion is referring to claim, and under the situation of spirit of the present utility model, the utility model can be done any type of modification.
Claims (1)
1. the slip-off preventing bolt structure of a frequency converter, comprise first connector and second connector that connect by screw, it is characterized in that: first connector is provided with through hole, through-hole diameter is between described screw front threads external diameter and middle part screw diameter, and described screw front threads screw-in also passes through described through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202830957U CN201584889U (en) | 2009-12-16 | 2009-12-16 | Anti-dropping bolt structure of frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202830957U CN201584889U (en) | 2009-12-16 | 2009-12-16 | Anti-dropping bolt structure of frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201584889U true CN201584889U (en) | 2010-09-15 |
Family
ID=42726903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202830957U Expired - Fee Related CN201584889U (en) | 2009-12-16 | 2009-12-16 | Anti-dropping bolt structure of frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201584889U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560710A (en) * | 2013-10-31 | 2014-02-05 | 苏州艾克威尔科技有限公司 | Soft starter with falling-preventing function |
-
2009
- 2009-12-16 CN CN2009202830957U patent/CN201584889U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560710A (en) * | 2013-10-31 | 2014-02-05 | 苏州艾克威尔科技有限公司 | Soft starter with falling-preventing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20171216 |