CN2681089Y - Zener safety barrier - Google Patents
Zener safety barrier Download PDFInfo
- Publication number
- CN2681089Y CN2681089Y CN 200420020688 CN200420020688U CN2681089Y CN 2681089 Y CN2681089 Y CN 2681089Y CN 200420020688 CN200420020688 CN 200420020688 CN 200420020688 U CN200420020688 U CN 200420020688U CN 2681089 Y CN2681089 Y CN 2681089Y
- Authority
- CN
- China
- Prior art keywords
- terminal board
- box body
- main circuit
- circuit board
- lid
- 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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Abstract
The utility model relates to a Zener safety barrier which comprises a box body, a box cover, a main circuit board and a terminal board, wherein, the main circuit board and the terminal board are vertically arranged in the box body, the components on the main circuit board are connected with the terminals on the terminal board by a curved needle. A nut which is used for fixing the terminal board is embedded in the box cover, the edge of the box cover is provided with a plurality of straps which are provided with clamping holes, and the end parts of the straps are provided with hooks. The terminal board is provided with positioning clamping heads corresponding to the clamping holes, and the positioning clamping heads on the terminal board are clamped in the clamping holes and fastened and integrated with the box cover by the screw which is screwed with the nut. The box body is provided with holes corresponding to the hooks on the straps of the box cover, and the hooks of the box cover are correspondingly fastened with the holes of the box body. The box cover, the terminal board, the main circuit board of the Zener safety barrier of the utility model are fastened with the box body as a whole. The utility model has convenient assembly, reliable and firm connection, high production efficiency and low cost.
Description
Technical field
The utility model relates to the zena's safety barrier that plays the safeguard protection effect in the inbeing safe explosion prevention system, and it is the associate device of electronic instrument of essential safe type and electric device.
Background technology
In the inbeing safe explosion prevention system, zena's safety barrier couples together the primary instrument of hazardous area and the secondary instrument of harbor.During operate as normal; it does not influence detection, the control function of primary instrument and secondary instrument; nonserviceable down; zena's safety barrier imports the limiting overload energy into hazardous area; utilize the kinds of protect function of its pressure limiting, current limliting and fast cut-off circuit, guarantee primary instrument, the field apparatus of hazardous area, producers' essential safety.
Zena's safety barrier mainly comprises box body, lid, be welded with the main circuit board of Zener diode and other components and parts and be welded with the terminal board of connection terminal, existing zena's safety barrier all adopts main circuit board is packaged in the box body, and water envelope with epoxy resin, drawing lead respectively from main circuit board is connected with earth stud with connection terminal, lid directly is stuck in the coboundary of housing, this structure remains following deficiency: 1) main circuit board to draw arrangements of conductors irregular, be squeezed mutually, influence safe in utilization; 2) lead and terminal can only manual weldings, and not only production efficiency is low and soldering reliability is relatively poor; 3) because the draw-in groove of lid and box body is positioned at the two ends of lid, and the plastic stripping direction is inconsistent, and mould need be provided with slide block, manufacturing expense is higher.
Summary of the invention
The purpose of this utility model provides a kind of zena's safety barrier that has improved, and to improve its safety, reliability, enhances productivity and reduces cost.
Zena's safety barrier of the present utility model comprises box body, lid, be welded with the main circuit board and the terminal board that is welded with connection terminal of components and parts, it is characterized in that main circuit board and terminal board are orthogonal places in the box body, components and parts on the main circuit board link to each other with connection terminal on the terminal board by looper, in lid, be equipped with the nut that is used for fixing terminal board, the edge of lid is provided with several butt strips, butt strip is provided with hole clipping, the end of butt strip is provided with has contact with, the location dop corresponding with hole clipping arranged on terminal board, location dop on the terminal board snaps in the hole clipping, and be tightened to one by screw and the lid that is fastened to nut, be provided with on the box body with the lid butt strip on have contact with the corresponding hole of taking, lid have contact with box body take the corresponding fastening in hole, in box body, be marked with epoxy resin.
Zena's safety barrier of the present utility model is when producing, just begin to adopt a monoblock printed-wiring board (PWB), on the monoblock circuit board, dig slotted hole, and draw shallow slot at the two ends of slotted hole, the monoblock wiring board is divided into main circuit board and terminal board two parts, welding looper and other components and parts between main circuit board and terminal board then, treat that all welding finishes after, wiring board is fractureed along shallow slot, make main circuit board and terminal board perpendicular.Like this, because wiring board originally was a monoblock, components and parts are arranged in one side, therefore can adopt the machine plug-in unit, and once cross crest, not only make welding very reliable, make main circuit board and terminal board realize neatly being connected, also can enhance productivity simultaneously, reduce production costs.And the location dop of terminal board snaps in the hole clipping of lid, and closes with screw is stubborn, and it is as a whole fastening, not only easy to assembly with box body that lid, terminal board, main circuit board are done, and firm and reliable connection.
Description of drawings
Fig. 1 is a zena's safety barrier structural representation of the present utility model;
Fig. 2 is the A-A cut-open view of Fig. 1;
Fig. 3 is main circuit board and terminal board manufacturing process figure;
Fig. 4 is the concrete structure synoptic diagram of lid;
Fig. 5 is the side view of Fig. 4.
Embodiment
With reference to Fig. 1, Fig. 2, zena's safety barrier of the present utility model comprises box body 1, lid 2, be welded with the main circuit board 3 and the terminal board 4 that is welded with connection terminal 8 of components and parts, main circuit board 3 and terminal board 4 are when producing, can be as shown in Figure 3, on the printed circuit board (PCB) of monoblock, dig slotted hole 15, and draw shallow slot 14 at the two ends of slotted hole, the monoblock wiring board is divided into main circuit board 3 and terminal board 4 two parts, between main circuit board and terminal board, weld looper 5 then, welding connection terminal 8 on the terminal board, the required components and parts of welding on the main circuit board, after treating that all welding finishes, wiring board is fractureed along shallow slot, and make main circuit board and terminal board be vertical configuration to place in the box body 1.In lid 2, be equipped with the nut 6 that is used for fixing terminal board 4, at the edge of lid butt strip 13 is set, butt strip 13 with the edge that is located at the nearly connection terminal 8 that is positioned at terminal board for well, each butt strip is provided with hole clipping 9, the location dop 10 corresponding with hole clipping arranged on terminal board 4, location dop 10 on the terminal board snaps in the hole clipping 9, and makes terminal board and lid be tightened to one by the bolt 7 that is fastened to nut 6.Adopt terminal board to snap in this structure of lid by dop, can solve because of two screw centre distances lessly on the one hand, and terminal board is more elongated, the problem of assembling and positioning difficulty; Can avoid when carrying out terminal connections the terminal board two ends displacement distortion that screwdriver firmly causes on the other hand.Be provided with in the end of lid butt strip and have contact with 11 (seeing Fig. 4, shown in Figure 5), box body 1 be provided with have contact with 11 corresponding fastenings take hole 12, lid is realized in the hole being connected by having contact with to embed to take with box body.Lid and box body can be once injection molded, adopt this kind structure, and mould need not to be provided with slide block, thereby reduced the difficulty and the cost of injection moulding.
Claims (1)
1. zena's safety barrier, comprise box body (1), lid (2), be welded with the main circuit board (3) of components and parts and be welded with the terminal board (4) of connection terminal (8), it is characterized in that main circuit board (3) and terminal board (4) are orthogonal places in the box body (1), components and parts on the main circuit board link to each other with connection terminal (8) on the terminal board by looper (5), in lid (2), be equipped with the nut (6) that is used for fixing terminal board (4), the edge of lid (2) is provided with several butt strips (13), butt strip (13) is provided with hole clipping (9), the end of butt strip is provided with has contact with (11), the location dop (10) corresponding with hole clipping (9) arranged on terminal board (4), location dop (10) on the terminal board (4) snaps in the hole clipping (9), and the screw (7) by being fastened to nut (6) is tightened to one with lid (2), be provided with on the box body (1) with lid (2) butt strip on have contact with (11) corresponding hole (12) of taking, the having contact with of lid (2) (11) and box body (1) take the corresponding fastening in hole (12), in box body (1), be marked with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020688 CN2681089Y (en) | 2004-03-07 | 2004-03-07 | Zener safety barrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420020688 CN2681089Y (en) | 2004-03-07 | 2004-03-07 | Zener safety barrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2681089Y true CN2681089Y (en) | 2005-02-23 |
Family
ID=34606780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420020688 Expired - Fee Related CN2681089Y (en) | 2004-03-07 | 2004-03-07 | Zener safety barrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2681089Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207144A (en) * | 2015-09-29 | 2015-12-30 | 哈尔滨东方报警设备开发有限公司 | Plugging type intrinsic safety wiring module |
| CN106877102A (en) * | 2017-01-05 | 2017-06-20 | 重庆宇通系统软件有限公司 | Isolation safe grid |
| CN107947142A (en) * | 2017-12-14 | 2018-04-20 | 南阳市中通防爆电机电器有限公司 | Zener type guard grating |
-
2004
- 2004-03-07 CN CN 200420020688 patent/CN2681089Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207144A (en) * | 2015-09-29 | 2015-12-30 | 哈尔滨东方报警设备开发有限公司 | Plugging type intrinsic safety wiring module |
| CN106877102A (en) * | 2017-01-05 | 2017-06-20 | 重庆宇通系统软件有限公司 | Isolation safe grid |
| CN106877102B (en) * | 2017-01-05 | 2019-12-27 | 重庆宇通系统软件有限公司 | Isolation safety barrier |
| CN107947142A (en) * | 2017-12-14 | 2018-04-20 | 南阳市中通防爆电机电器有限公司 | Zener type guard grating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050223 Termination date: 20130307 |