CN204145927U - A kind of screw attachment structure of outer casing of power supply - Google Patents
A kind of screw attachment structure of outer casing of power supply Download PDFInfo
- Publication number
- CN204145927U CN204145927U CN201420604638.1U CN201420604638U CN204145927U CN 204145927 U CN204145927 U CN 204145927U CN 201420604638 U CN201420604638 U CN 201420604638U CN 204145927 U CN204145927 U CN 204145927U
- Authority
- CN
- China
- Prior art keywords
- power supply
- outer casing
- attachment structure
- screw
- upper cover
- 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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- Connections Arranged To Contact A Plurality Of Conductors (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The utility model discloses a kind of screw attachment structure of outer casing of power supply, comprising: upper cover and lower cover, upper cover and lower cover comprise screw hole respectively, are connected by screw; Wherein, the contact-making surface of upper cover and lower cover is the hierarchic structure cooperatively interacted, and screw hole is arranged in hierarchic structure.
Description
Technical field
The utility model relates to power consumption equipment technical field of structures, particularly a kind of screw attachment structure of outer casing of power supply.
Background technology
Safe distance comprises electric clearance (space length), creepage distance (creepage distance) and insulation penetration range, what be mainly concerned with herein is creepage distance, i.e. the beeline measured along insulating surface on two adjacent conductors or a conductor and adjacent motor casing surface.
The screw attachment structure of general outer casing of power supply is the cylindrical cavity it be designed to through hole.As shown in Figure 1, namely existing screw attachment structure opens a through hole in upper cover 1 with lower cover 2, and its creepage distance is A+B.Wiring board due to this power source charges product is placed in housing die cavity, and when product size is less, such structure may cause creepage phenomenon, there is potential safety hazard.How can meet Standard, to reach the safety creepage distance of regulation, and ensure that product structure does not cause larger change, this is the problem needing to solve.
Utility model content
The utility model, for prior art above shortcomings, provides a kind of screw attachment structure of outer casing of power supply.The utility model is achieved through the following technical solutions:
A screw attachment structure for outer casing of power supply, comprising: upper cover and lower cover, and upper cover and lower cover comprise screw hole respectively, are connected by screw;
Wherein, the contact-making surface of upper cover and lower cover is the hierarchic structure cooperatively interacted, and screw hole is arranged in hierarchic structure.
Preferably, the hierarchic structure of upper cover is stepped outstanding or stepped depression, and the hierarchic structure of lower cover corresponds to stepped depression or stepped outstanding.
Preferably, steppedly give prominence to as step, in " convex " font; Stepped depression is step, in " recessed " font.
Preferably, stepped outstanding be two-stage or the above ladder of two-stage with stepped depression.
The utility model is ensureing, under the prerequisite that original screw attachment physical dimension is constant, can increase creepage distance, reach the requirement of safety.
Accompanying drawing explanation
Shown in Fig. 1 is the screw attachment structure of existing power supply shell;
Shown in Fig. 2 is the screw attachment structure of outer casing of power supply of the present utility model.
Embodiment
Below with reference to accompanying drawing of the present utility model; clear, complete description and discussion are carried out to the technical scheme in the utility model embodiment; obviously; as described herein is only a part of example of the present utility model; it is not whole examples; based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to protection range of the present utility model.
For the ease of the understanding to the utility model embodiment, be further explained for specific embodiment below in conjunction with accompanying drawing, and each embodiment does not form the restriction to the utility model embodiment.
As shown in Figure 2, the screw attachment structure of the outer casing of power supply that the utility model provides, outer casing of power supply has upper cover 3, lower cover 4, and wiring board is placed in housing.Be connected with screw between upper cover 3, lower cover 4, upper and lower covers spins together through the screw hole upper and lower covers by screw.
Two screw holes that power shell is upper and lower add a hierarchic structure, and then is fitted together to up and down.The result done like this shows, power shell is located reliably up and down, and increases creepage distance, guarantees that product use procedure safety is secure, and without the need to changing the overall dimensions size of product.
Certainly, the utility model is not restricted to above-described embodiment, and the hierarchic structure of upper cover is stepped outstanding, and the hierarchic structure of lower cover corresponds to stepped depression, can be also stepped depression to be the hierarchic structure of upper cover, the hierarchic structure of lower cover corresponds to stepped outstanding; Meanwhile, hierarchic structure can be " convex " font and " recessed " font of one-level, also can be two-stage or the above ladder of two-stage.Because the structure of this structure is simple, easily realize, and versatility is better, so there is certain prospect of the application.Be applicable to the threaded connector place of most electronic product casing.
The utility model in working order time, the result of calculation of its creepage distance as shown in Figure 2, is A+B+C+D.When structural design, under can accomplishing to ensure the prerequisite of its original size constancy, can creepage distance be increased, reach the requirement of safety.
The above; be only the utility model preferably embodiment; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the change that can expect easily or replacement, all should be encompassed within protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (4)
1. a screw attachment structure for outer casing of power supply, it is characterized in that, comprising: upper cover and lower cover, described upper cover and lower cover comprise screw hole respectively, are connected by screw;
Wherein, the contact-making surface of described upper cover and described lower cover is the hierarchic structure cooperatively interacted, and described screw hole is arranged in described hierarchic structure.
2. the screw attachment structure of outer casing of power supply according to claim 1, is characterized in that, the described hierarchic structure of described upper cover is stepped outstanding or stepped depression, and the described hierarchic structure of described lower cover corresponds to stepped depression or stepped outstanding.
3. the screw attachment structure of outer casing of power supply according to claim 2, is characterized in that, describedly steppedly gives prominence to as step, in " convex " font; Described stepped depression is step, in " recessed " font.
4. the screw attachment structure of outer casing of power supply according to claim 2, is characterized in that, described stepped outstanding be two-stage or the above ladder of two-stage with described stepped depression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420604638.1U CN204145927U (en) | 2014-10-20 | 2014-10-20 | A kind of screw attachment structure of outer casing of power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420604638.1U CN204145927U (en) | 2014-10-20 | 2014-10-20 | A kind of screw attachment structure of outer casing of power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204145927U true CN204145927U (en) | 2015-02-04 |
Family
ID=52422586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420604638.1U Expired - Fee Related CN204145927U (en) | 2014-10-20 | 2014-10-20 | A kind of screw attachment structure of outer casing of power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204145927U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039197A (en) * | 2017-06-05 | 2017-08-11 | 漳州聚安美电气科技有限公司 | A kind of spacing universal switch of fine motion |
-
2014
- 2014-10-20 CN CN201420604638.1U patent/CN204145927U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039197A (en) * | 2017-06-05 | 2017-08-11 | 漳州聚安美电气科技有限公司 | A kind of spacing universal switch of fine motion |
| CN107039197B (en) * | 2017-06-05 | 2019-05-21 | 漳州聚安美电气科技有限公司 | A kind of fine motion limit universal switch |
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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 |
Granted publication date: 20150204 Termination date: 20151020 |
|
| EXPY | Termination of patent right or utility model |