CN203931881U - A kind of travel switch - Google Patents
A kind of travel switch Download PDFInfo
- Publication number
- CN203931881U CN203931881U CN201420275902.1U CN201420275902U CN203931881U CN 203931881 U CN203931881 U CN 203931881U CN 201420275902 U CN201420275902 U CN 201420275902U CN 203931881 U CN203931881 U CN 203931881U
- Authority
- CN
- China
- Prior art keywords
- travel switch
- actuator
- lip
- cannelure
- housing
- 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 discloses a kind of travel switch, comprise housing (1), case lid (2), in described housing (1), be provided with switch element (5), described housing (1) is metal shell, and described case lid (2) is the vinyl cover of crown cap or inner embedded with metal reinforcement; Described metal reinforcement is for being embedded in the reinforcement pressing plate (2-1) of described vinyl cover and housing (1) connecting portion.The trip switch has been avoided the distortion in the past causing due to vinyl cover insufficient strength, hermetically-sealed construction has obtained further improvement, degree of protection can reach IP67, solve preferably the case lid that plastics are made in the past and be not suitable for the problem using for a long time in the environment such as dust, sleet, water, high light, there is the wider environment scope of application.
Description
Technical field
The utility model relates to low voltage electrical apparatus technology field, particularly hermetically sealed small-sized travel switch.
Background technology
The design of Sealing Structure of existing small-sized travel switch is unreasonable, and its case material is metal, the material of case lid is plastics, plastics undercapacity is easily out of shape, cause its sealing property poor, therefore the degree of protection of existing small-sized travel switch is only IP65, and applicable environmental field is smaller, can only in temperature is the environment of-5 DEG C～+ 40 DEG C, work, be unsuitable for using in the environment such as dust, sleet, water, strong illumination.
Therefore, how further improving the degree of protection of travel switch, and then expand its applicable environmental field, is those skilled in the art's technical issues that need to address.
Utility model content
The purpose of this utility model is to provide a kind of travel switch.The hermetically-sealed construction of the trip switch has obtained further improvement, and degree of protection can reach IP67, has the wider environment scope of application.
For achieving the above object, the utility model provides a kind of travel switch, comprises housing, case lid, in described housing, be provided with switch element, it is characterized in that, described housing is metal shell, and described case lid is the vinyl cover of crown cap or inner embedded with metal reinforcement.
Preferably, described metal reinforcement is the reinforcement pressing plate that is embedded in described vinyl cover and housing connecting portion.
Preferably, further comprise actuator, it is provided with actuator lid; Between the rotating shaft of described actuator and actuator, be provided with the lip-type packing of single direction rotation axle;
The lip-type packing of described single direction rotation axle is substantially " Y " font on cross section, and its latter half is annular, and the male cone (strobilus masculinus) that the first half is outwards opened gradually forms the first lip, the first half inwardly gradually the inner conical surface of indentation form the second lip;
The first cannelure that is inclined-plane for both sides between described the first lip and the second lip, the bottom of described the first cannelure is that both sides are second cannelure on inclined-plane; The inclined-plane of described the second cannelure is suddenly in the inclined-plane of described the first cannelure.
Preferably, the angle of taper of described the first lip is greater than the angle of taper of described the second lip.
Preferably, the inclined-plane, inner side of described the first cannelure and the second cannelure is all suddenly in its inclined-plane, outside.
Preferably, between described housing and case lid and between actuator and actuator lid, all seal by sealing gasket; Described housing and actuator are respectively equipped with potted line at the position that compresses described sealing gasket.
Preferably, described potted line is the boss that limits compacted position on cross section.
Preferably, described sealing gasket is silicone rubber seal gasket or acrylonitrile-butadiene rubber sealing gasket.
Preferably, the outgoing line part of described switch element is sealed by pipe joint compression cable.
Preferably, described actuator is straight moving plunger type, directly moving roller type, rocker-arm, adjustable rocker arm type, universal type, lever or oscillating rod type actuator.
The housing of the travel switch that the utility model provides is metal shell, case lid is the vinyl cover of crown cap or inner embedded with metal reinforcement, the vinyl cover of crown cap and reinforcement has improved the intensity of case lid, avoid the distortion in the past causing due to vinyl cover insufficient strength, ensured the reliability of switch sealing, crown cap has solved preferably the case lid that plastics are made in the past and be not suitable for the problem using for a long time in the environment such as dust, sleet, water, high light.
Brief description of the drawings
The overall structure schematic diagram of a kind of embodiment that Fig. 1 is travel switch that the utility model provides;
Fig. 2 is the structural representation of actuator shown in Fig. 1;
Fig. 3 is the structural representation of the lip-type packing of single direction rotation axle shown in Fig. 2;
Fig. 4 is the structural representation of case lid shown in Fig. 1;
Fig. 5 is the structural representation that adopts steel plate and sealing gasket to seal in travel switch shown in Fig. 1;
Fig. 6 is the structural representation that actuator passes through potted line press seal pad.
In figure:
1. housing 2. case lid 2-1. strengthen pressing plate 3. actuator 3-1. rocking arm 3-2. roller 4. actuator lid 5. switch element 6. pipe joint 7. rotating shaft 8. copper sheathing 9. cam 10. resilient balls mechanism 11. single direction rotation axle lip-type packing 11-1. first lip 11-2. second lip 12-1. first cannelure 12-2. the second cannelure 13. sealing gasket 14. boss
Embodiment
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 1, Fig. 2, the overall structure schematic diagram of a kind of embodiment that Fig. 1 is travel switch that the utility model provides; Fig. 2 is the structural representation of actuator shown in Fig. 1.
In a kind of embodiment, the travel switch that the utility model provides, mainly formed by parts such as housing 1, case lid 2, actuator 3, actuator lids 4, in housing 1, be provided with switch element 5, the actuator 3 matching with switch element is installed in one end of housing 1, other end mounting pipe joint 6, to draw the cable of switch element 5.
Actuator 3 is rocker arm type actuator, its rocking arm 3-1 end is provided with roller 3-2; actuator 3 inside are stretched in the rotating shaft 7 of rocking arm 3-1 root; be rotatably assorted with the copper sheathing 8 in axis hole; rotating shaft 7 the inners are provided with cam 9; when having External Force Acting in the time that roller 3-2 promotes rocking arm 3-1 rotation, the cam 9 in rotating shaft 7 just can trigger the switch element 5 in housing 1 by resilient balls mechanism 10, and then sends corresponding control signal.
Rotating shaft 7 the position of matching with copper sheathing 8 offer together with cannelure, single direction rotation axle lip-type packing 11 is installed, to realize the movable sealing to axis hole position in it.
Please refer to Fig. 3, Fig. 3 is the structural representation of the lip-type packing of single direction rotation axle shown in Fig. 2.
The lip-type packing 11 of single direction rotation axle is between the cannelure and copper sheathing 8 of rotating shaft 7, it is substantially " Y " font on cross section, the latter half is annular, the male cone (strobilus masculinus) that the first half is outwards opened gradually forms the first lip 11-1, the first half inwardly gradually the inner conical surface of indentation form the second lip 11-2.
The end face of the first lip 11-1 and the second lip 11-2 is in same plane, being provided with both sides is between the two the first cannelure 12-1 on inclined-plane, the bottom of the first cannelure 12-1 is provided with the second cannelure 12-2 that both sides are inclined-plane, the inclined-plane of the second cannelure 12-2 is suddenly in the inclined-plane of the first cannelure 12-1, its bottom rounding off is curved, the hollow-core construction being formed by the first cannelure 12-1 and the second cannelure 12-2 is substantially infundibulate on cross section, dimensionally, the first cannelure 12-1 is about 1:1～1:3 with the ratio of the degree of depth of the second cannelure 12-2.
Particularly, the angle of taper of the first lip 11-1 is greater than the angle of taper of the second lip 11-2, and the inclined degree of the first lip 11-1 is greater than the second lip 11-2.
In addition, if centered by the cannelure axis shown in scheming line, the first cannelure 12-1 and the second cannelure 12-2 are not symmetrical about this center line, both inclined-planes, inner side all suddenly in its outside inclined-plane.
The outside of the sealing ring of this structure has the first lip 11-1, inner side has the second lip 11-2, on end face between the first lip 11-1 and the second lip 11-2, there is the first cannelure 12-1, and the bottom of the first cannelure 12-1 has the second cannelure 12-2, wherein, the first lip 11-1 is close to the copper sheathing 8 of actuator after compressive deformation, the second lip 11-2 holds rotating shaft 7 tightly after compressive deformation, because the first cannelure 12-1 and the second cannelure 12-2 have formed the hollow-core construction between the first lip 11-1 and the second lip 11-2, therefore be subject to after External Force Acting, sealing ring can be out of shape preferably, and, when the cannelure opening of sealing ring is toward the outer side time, can prevent well that dust and liquid from entering switch inside, its sealing property is apparently higher than common lip-type packing, thereby make the degree of protection of travel switch reach IP67, can ensure again that rotating shaft 7 can rotation neatly in actuator hole simultaneously.
As shown in Figure 1, the main position that this trip switch need to seal has between actuator lid 4 and actuator 3, several places such as between rotating shaft 7 and actuator 3, between actuator 3 and housing 1, between case lid 2 and housing 1, between pipe joint 6 and housing 1.To this, the utility model is all adopting sealing gasket or the sealing ring made by nitrile rubber to carry out sealing protection everywhere above, and the outgoing line part of switch element 5 compresses cable sealing by pipe joint 6.
Wherein, between housing 1 and case lid 2 and between actuator 3 and actuator lid 4, all seal (seeing Fig. 5) by sealing gasket 13, upper strata is steel plate, lower floor is sealing gasket, the manufacture difficulty of parts and the assembly difficulty of complete machine are reduced, also make the sealing property of product more improve, and housing 1 and actuator 3 are respectively equipped with potted line at the position that compresses described sealing gasket 13.
Particularly, between housing 1 and sealing gasket faying face and near on the housing of sealing gasket one side, increase potted line, between actuator 3 and sealing gasket and on the close actuator of seal one side, increasing potted line, the compression degree of sealing gasket 13 that has ensured every switch is consistent, and above-mentioned potted line can be boss 14 (seeing Fig. 6) or other form of restriction compacted position on cross section.
Please refer to Fig. 4, Fig. 4 is the structural representation of case lid shown in Fig. 1.
The housing 1 of travel switch is metal shell, the vinyl cover of the inner embedded with metal reinforcement of case lid 2, by increasing metal part therein, has improved the intensity of case lid, solve the distortion in the past causing due to vinyl cover insufficient strength, ensured the needs of sealing.
Particularly, in order to increase the intensity of plastic casing lid, can be at the connecting portion of case lid 2 and housing 1, for example the inside, screw hole place is bumped into the reinforcement pressing plate 2-1 being made by cold-rolled steel sheet, to strengthen pressure and the area of exerting pressure to sealing gasket 13, avoid because the poorly sealed hidden danger that the distortion of vinyl cover causes has improved the reliability of sealing.
In another kind of embodiment, all adopt sealing gasket or the sealing ring made by silastic material to carry out sealing protection between the actuator lid 4 and actuator 3 of travel switch provided by the utility model, between rotating shaft 7 and actuator 3, between actuator 3 and housing 1, between case lid 2 and housing 1, between pipe joint 6 and housing 1 etc.
In addition, when the housing 1 of travel switch is metal shell, case lid 2 is also crown cap, metal case lid 2 has improved the reliability of switch sealing, solve preferably the case lid that plastics are made in the past and be not suitable for the problem using for a long time in the environment such as dust, sleet, water, high light, all the other structures are substantially identical with above-mentioned the first embodiment, please refer to description above.
If adopt metal case lid 2, simultaneously its sealing member material is selected the silicon rubber of high-low temperature resistant, the molybdenum disulphide grease that its lubricating grease adopts high-low temperature resistant, and travel switch can stably be worked in ambient temperature is the scope of-40 DEG C～+ 85 DEG C.
Certainly, below only as an example of metal wheel rolling pivoted-arm formula travel switch example, the utility model is described, except metal wheel rolling pivoted-arm formula travel switch, it can also be directly to move plunger type travel switch, linear motion rolling formula travel switch, plastic wheel rolling pivoted-arm formula travel switch, metal wheel is adjustable rolling pivoted-arm formula travel switch, plastic wheel is adjustable rolling pivoted-arm formula travel switch, universal type travel switch and adjustable metal oscillating rod type travel switch, roller lever travel switch, the travel switch of the other types such as angle lever formula travel switch, this just illustrates no longer one by one again.
Above travel switch provided by the utility model is described in detail.Applied specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment is just for helping to understand core concept of the present utility model.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.
Claims (10)
1. a travel switch, comprise housing (1), case lid (2), in described housing (1), be provided with switch element (5), it is characterized in that, described housing (1) is metal shell, and described case lid (2) is the vinyl cover of crown cap or inner embedded with metal reinforcement.
2. travel switch according to claim 1, is characterized in that, described metal reinforcement is for being embedded in the reinforcement pressing plate (2-1) of described vinyl cover and housing (1) connecting portion.
3. travel switch according to claim 1, is characterized in that, further comprises actuator (3), it is provided with actuator lid (4);
Between described housing (1) and case lid (2) and between actuator (3) and actuator lid (4), all seal by sealing gasket (13); Described housing (1) and actuator (3) are respectively equipped with potted line at the position that compresses described sealing gasket.
4. travel switch according to claim 3, is characterized in that, described potted line is the boss (14) that limits compacted position on cross section.
5. travel switch according to claim 3, is characterized in that, described sealing gasket (13) is silicone rubber seal gasket or acrylonitrile-butadiene rubber sealing gasket.
6. travel switch according to claim 3, is characterized in that, between the rotating shaft (7) of described actuator (3) and actuator, is provided with single direction rotation axle lip-type packing (11);
Described single direction rotation axle lip-type packing (11) is substantially " Y " font on cross section, its the latter half is annular, the male cone (strobilus masculinus) that the first half is outwards opened gradually forms the first lip (11-1), the first half inwardly gradually the inner conical surface of indentation form the second lip (11-2);
The first cannelure (12-1) that is inclined-plane for both sides between described the first lip (11-1) and the second lip (11-2), the bottom of described the first cannelure (12-1) is that both sides are second cannelure (12-2) on inclined-plane; The inclined-plane of described the second cannelure (12-2) is suddenly in the inclined-plane of described the first cannelure (12-1).
7. travel switch according to claim 6, is characterized in that, the angle of taper of described the first lip (11-1) is greater than the angle of taper of described the second lip (11-2).
8. travel switch according to claim 7, is characterized in that, the inclined-plane, inner side of described the first cannelure (12-1) and the second cannelure (12-2) is all suddenly in its inclined-plane, outside.
9. travel switch according to claim 1, is characterized in that, the outgoing line part of described switch element (5) compresses cable sealing by pipe joint (6).
10. according to the travel switch described in claim 3 to 8 any one, it is characterized in that, described actuator is straight moving plunger type, directly moving roller type, rocker-arm, adjustable rocker arm type, universal type, lever or oscillating rod type actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420275902.1U CN203931881U (en) | 2014-05-27 | 2014-05-27 | A kind of travel switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420275902.1U CN203931881U (en) | 2014-05-27 | 2014-05-27 | A kind of travel switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931881U true CN203931881U (en) | 2014-11-05 |
Family
ID=51827654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420275902.1U Expired - Fee Related CN203931881U (en) | 2014-05-27 | 2014-05-27 | A kind of travel switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931881U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461336A (en) * | 2017-02-21 | 2018-08-28 | 阿自倍尔株式会社 | The manufacturing method of limit switch |
| CN110534362A (en) * | 2019-09-26 | 2019-12-03 | 乐清市星博电器有限公司 | A kind of adjustable rocker-arm travel switch |
-
2014
- 2014-05-27 CN CN201420275902.1U patent/CN203931881U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461336A (en) * | 2017-02-21 | 2018-08-28 | 阿自倍尔株式会社 | The manufacturing method of limit switch |
| CN108461336B (en) * | 2017-02-21 | 2020-03-27 | 阿自倍尔株式会社 | Method for manufacturing limit switch |
| CN110534362A (en) * | 2019-09-26 | 2019-12-03 | 乐清市星博电器有限公司 | A kind of adjustable rocker-arm travel switch |
| CN110534362B (en) * | 2019-09-26 | 2021-05-04 | 浙江星博电器有限公司 | Adjustable rocker arm type travel 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20190527 |