CN203826285U - Proximity switch - Google Patents
Proximity switch Download PDFInfo
- Publication number
- CN203826285U CN203826285U CN201420230495.2U CN201420230495U CN203826285U CN 203826285 U CN203826285 U CN 203826285U CN 201420230495 U CN201420230495 U CN 201420230495U CN 203826285 U CN203826285 U CN 203826285U
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- plastic box
- tongue tube
- groove
- draw
- wire
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Abstract
The utility model discloses a proximity switch, which comprises an outer shell, a lead, a reed switch and wiring terminals, wherein the outer shell is provided with a plastic box for packaging the reed switch, the plastic box is provided with a lead positioning hole which allows the lead to pass through, the plastic box is poured with a sealing compound, the reed switch is provided with a welding part to be welded with the lead, at least two clamping grooves used for fixing the lead are arranged in the plastic box, the longitudinal section of each clamping groove is trapezoidal, notches of the clamping grooves face toward the same direction as the opening direction of the plastic box, a gap is reserved between each clamping groove and the side wall of the plastic box, and the width of each gap is identical with the diameter of the reed switch. The key point of the technical scheme is that the fastening clamping grooves are arranged in the plastic box; and the proximity switch is suitable for various electric appliances.
Description
Technical field
The utility model relates to a kind of electric component that opens and closes circuit, and more particularly, it relates to a kind of approach switch.
Background technology
Approach switch, a kind ofly without carrying out machinery with moving component, directly to contact and manipulable position switch, when the sensitive surface of object proximity switch arrives operating distance, do not need Mechanical Contact and apply any pressure to make switch motion, thereby drive DC electric apparatus or provide control command to computer (plc) device.Approach switch is kind of a switching mode transducer (being noncontacting switch), and the characteristic of its existing travel switch, sensitive switch has sensing capabilities simultaneously, and reliable in action, stable performance, frequency response is fast, application life is long, and antijamming capability waits by force and has waterproof, a feature such as shockproof, corrosion-resistant.
Approach switch claims again contactless proximity switch, it is desirable electronic switch quantity sensor, induction region when metal detection body approach switch, switch just can be contactless, without pressure, no-spark, send electric instruction rapidly, accurate response goes out position and the stroke of motion, be used in general Stroke Control, convenience and the applicable ability to adverse circumstances that its positioning precision, frequency of operation, useful life, installation are adjusted, be that common mechanical formula travel switch institute is incomparable.It is widely used in the industries such as lathe, metallurgy, chemical industry, light textile and printing.In automatic control system, can be used as spacing, counting, positioning control and automatic protection ring joint etc.
Approach opening structure and comprise switch housing, dry reed, wire and terminal, approach switch is simple in structure, volume is little, described switch housing is provided with the plastic box of placing tongue tube, in production process, wire is through plastic box, tongue tube and wire bonds are also placed in plastic box, after welding is good, need plastic box perfusion sealing to make its sealing, in the filling sealing to plastic box, the weld of tongue tube and wire does not fasten bit architecture in plastic box, described tongue tube is positioning when casting glue easily, after encapsulating, also will dry tongue tube in the process of moving easily comes off or overturning, affect approach switch stroke and performance.
At present, (Chinese patent that application number is 2009202110808.7 discloses a kind of collision damage prevention proximity switch) on market, it comprises protective cap and elastic buffer unit.Although this collision damage prevention proximity switch can prevent approach switch and in use avoid by damage, cannot play a protective role in switch production process.
Utility model content
The deficiency existing for prior art, the purpose of this utility model is to provide a kind of approach switch that facilitates fastening dry reed position.
For achieving the above object, the utility model provides following technical scheme: a kind of approach switch, comprise shell, wire, tongue tube and binding post, described shell is provided with the plastic box of encapsulation tongue tube, described plastic box is provided with the wire location hole passing for wire, in described plastic box, be also perfused with sealing, described tongue tube is provided with the weld part of using with wire bonds, in described plastic box, be provided with at least two for the draw-in groove of fixing cord, the vertical section of described draw-in groove is trapezoidal, the notch of described draw-in groove is towards identical with the opening direction of plastic box, the sidewall of described draw-in groove and plastic box leaves gap, described gap width is identical with tongue tube diameter.
By adopting technique scheme, described wire is through wire location hole, after described tongue tube and wire bonds, pouring into sealing is encapsulated in plastic box, described wire snaps in described draw-in groove and locates, play the effect of fastening tongue tube, prevent at follow-up encapsulating, dry, in handling process, there is tongue tube positioning phenomenon and affect described switch performance, when described wire embeds in trapezoidal draw-in groove, forming point with one end, top of trapezoidal draw-in groove contacts, the contact of fixing cord time point face is convenient, the weld part at two draw-in groove difference corresponding tongue tube two ends, by 2 fixing tongue tube positions, that fixed structure is more effective, the notch of described draw-in groove is towards identical with the opening direction of plastic box, convenient when assembling, and during encapsulating, sealing pours in plastic box from the opening part of plastic box, draw-in groove bottom land is the direction that tongue tube may move, more effectively prevent that tongue tube positioning from moving, described spacing width communicates with tongue tube diameter, wire embeds after draw-in groove, tongue tube embeds in the spacing of draw-in groove and plastic box, play secondary fastening effect.
The utility model is further set to: described plastic box bottom is provided with protruding plastics platform, and described plastics platform height is lower than draw-in groove minimum point.
By adopting technique scheme, described plastics platform also can play the effect of location tongue tube, and the plastics platform of projection has also reduced the volume that needs casting glue simultaneously, saves cost.
The utility model is further set to: described plastics platform outside is provided with rounding.
By adopting technique scheme, described plastics platform outer setting is damaged by the wedge angle of plastics platform, burr after having rounding can avoid tongue tube to pack plastic box into.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the sectional view of the utility model embodiment.
Attached body tag: 1. shell; 2. plastic box; 3. wire; 4. draw-in groove; 5. plastics platform; 6. tongue tube; 7. weld part; 8. binding post.
Embodiment
Referring to figs. 1 through Fig. 2, the utility model embodiment is described further.
An approach switch, comprises shell 1, wire 3, tongue tube 6 and binding post 8, the metal spring leaf contact that described tongue tube 6 has is conventionally that two soft magnetic materials are made, disconnect during without magnetic, and what have also has the 3rd reed as normally-closed contact.These reed contacts are encapsulated in the glass tube that is filled with inert gas (as nitrogen, helium etc.) or vacuum, in glass tube, the leaf end of parallel encapsulation is overlapping, and leave certain interval or be in contact with one another to form often opening or normally-closed contact of switch, tongue tube 6 is simpler than common mechanical construction of switch, volume is little, speed is high, long working life; And compare with electronic switch, it has again the features such as anti-load shock ability is strong, and functional reliability is very high.Described shell 1 is provided with the plastic box 2 of encapsulation tongue tube 6, described plastic box 2 is provided with wire 3 location holes that pass for wire 3, in described plastic box 2, be also perfused with sealing, described tongue tube 6 is provided with the weld part 7 with wire 3 welding use, in described plastic box 2, be provided with the draw-in groove 4 of fixing cord 3, described wire 3 is through wire 3 location holes, described tongue tube 6 is encapsulated in plastic box 2 with the rear perfusion of wire 3 welding sealing, described wire 3 snaps in location in described draw-in groove 4, play the effect of fastening tongue tube 6, prevent at follow-up encapsulating, dry, in handling process, there are tongue tube 6 positioning phenomenons and affect described switch performance.
The vertical section of described draw-in groove 4 is trapezoidal, when described wire 3 embeds in trapezoidal draw-in groove 4, forms point contact with one end, top of trapezoidal draw-in groove 4, and fixing cord 3 time point face contacts are convenient.
In described plastic box 2, be at least provided with two draw-in grooves 4, two draw-in grooves 4 are set in the present embodiment, described two draw-in grooves 4 are the weld part 7 at corresponding tongue tube 6 two ends respectively, by 2 fixing tongue tube 6 positions, is that fixed structure is more effective.
The notch of described draw-in groove 4 is towards identical with the opening direction of plastic box 2, the notch of described draw-in groove 4 is towards identical with the opening direction of plastic box 2, convenient when assembling, and during encapsulating, sealing pours in plastic box 2 from the opening part of plastic box 2, draw-in groove 4 bottom lands are the direction that tongue tube 6 may move, and more effectively prevent that tongue tube 6 positionings from moving.
Described draw-in groove 4 leaves gap with the sidewall of plastic box 2, described gap width is identical with tongue tube 6 diameters, and described spacing width communicates with tongue tube 6 diameters, and wire 3 embeds after draw-in groove 4, tongue tube 6 embeds in the spacing of draw-in groove 4 and plastic box 2, plays secondary fastening effect.
Described plastic box 2 bottoms are provided with protruding plastics platform 5, and described plastics platform 5 height are lower than draw-in groove 4 minimum points, and described plastics platform 5 also can play the effect of location tongue tube 6, and the plastics platform 5 of projection has also reduced the volume that needs casting glue simultaneously, saves cost.
Described plastics platform 5 outsides are provided with rounding, and described plastics platform 5 outer setting have rounding can avoid tongue tube 6 to pack that plastic box 2 is rear to be damaged by the wedge angle of plastics platform 5, burr into.
Claims (3)
1. an approach switch, comprise shell, wire, tongue tube and binding post, described shell is provided with the plastic box of encapsulation tongue tube, described plastic box is provided with the wire location hole passing for wire, in described plastic box, be also perfused with sealing, described tongue tube is provided with the weld part of using with wire bonds, it is characterized in that: in described plastic box, be provided with at least two for the draw-in groove of fixing cord, the vertical section of described draw-in groove is trapezoidal, the notch of described draw-in groove is towards identical with the opening direction of plastic box, the sidewall of described draw-in groove and plastic box leaves gap, described gap width is identical with tongue tube diameter.
2. approach switch according to claim 1, is characterized in that: described plastic box bottom is provided with protruding plastics platform, and described plastics platform height is lower than draw-in groove minimum point.
3. approach switch according to claim 2, is characterized in that: described plastics platform outside is provided with rounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230495.2U CN203826285U (en) | 2014-05-07 | 2014-05-07 | Proximity switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230495.2U CN203826285U (en) | 2014-05-07 | 2014-05-07 | Proximity switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826285U true CN203826285U (en) | 2014-09-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420230495.2U Active CN203826285U (en) | 2014-05-07 | 2014-05-07 | Proximity switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN203826285U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845498A (en) * | 2016-05-31 | 2016-08-10 | 佛山市川东磁电股份有限公司 | Low-pressure injection molding magnetic proximity switch |
| CN106356248A (en) * | 2016-10-20 | 2017-01-25 | 佛山市川东磁电股份有限公司 | Quickly encapsulated magnetic proximity sensor and household electrical appliance using sensor |
| CN108402611A (en) * | 2018-05-11 | 2018-08-17 | 厦门奇成网络科技有限公司 | The watchband of location watch |
| CN109979771A (en) * | 2019-04-16 | 2019-07-05 | 深圳市五洲电子有限公司 | A kind of security protection magnetic switch and packaging technology |
-
2014
- 2014-05-07 CN CN201420230495.2U patent/CN203826285U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105845498A (en) * | 2016-05-31 | 2016-08-10 | 佛山市川东磁电股份有限公司 | Low-pressure injection molding magnetic proximity switch |
| CN105845498B (en) * | 2016-05-31 | 2018-05-15 | 佛山市川东磁电股份有限公司 | A kind of low-pressure injection molding magnetic approach switch |
| CN106356248A (en) * | 2016-10-20 | 2017-01-25 | 佛山市川东磁电股份有限公司 | Quickly encapsulated magnetic proximity sensor and household electrical appliance using sensor |
| CN106356248B (en) * | 2016-10-20 | 2018-09-11 | 佛山市川东磁电股份有限公司 | A kind of fast packing magnetic proximity sensor and the household electrical appliance using the sensor |
| CN108402611A (en) * | 2018-05-11 | 2018-08-17 | 厦门奇成网络科技有限公司 | The watchband of location watch |
| CN109979771A (en) * | 2019-04-16 | 2019-07-05 | 深圳市五洲电子有限公司 | A kind of security protection magnetic switch and packaging technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |