CN102522231A - Stroke switch - Google Patents
Stroke switch Download PDFInfo
- Publication number
- CN102522231A CN102522231A CN2011104269865A CN201110426986A CN102522231A CN 102522231 A CN102522231 A CN 102522231A CN 2011104269865 A CN2011104269865 A CN 2011104269865A CN 201110426986 A CN201110426986 A CN 201110426986A CN 102522231 A CN102522231 A CN 102522231A
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- rotating shaft
- wheel
- fast pulley
- adjustment wheel
- following
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Abstract
The invention relates to a stroke switch used by a pneumatic actuator, especially relating to a stroke switch. The stroke switch comprises a feedback rotating shaft (6). The stroke switch is characterized in that: the stroke switch also comprises an upper fixed wheel (4) and a lower fixed wheel (14) which are fixed on the feedback rotating shaft (6), and the feedback rotating shaft (6) between the upper fixed wheel (4) and the lower fixed wheel (14) is sleeved with an upper adjusting wheel (3) and a lower adjusting wheel (13), wherein the upper adjusting wheel (3) and the lower adjusting wheel (13) and the feedback rotating shaft (6) are in clearance fit, the upper adjusting wheel (3) and the upper fixed wheel (4) are engaged through a gear, the lower adjusting wheel (13) and the lower fixed wheel (14) also are engaged through a gear, and a compression spring (7) is arranged between the upper adjusting wheel (3) and the lower adjusting wheel (13). According to the invention, a circumferential position adjusting problem of a switch feeler lever and a contact switch is solved, and detection precision and flexibility of the stroke switch are raised.
Description
Technical field
The present invention relates to a kind of pneumatic actuator and use travel switch, especially a kind of travel switch.
Background technology
As shown in Figure 1, traditional travel switch built-in contact-making switch trigger position when detecting the pneumatic actuator stroke is adjusted as follows: axle sleeve adopts interference fit to be pressed in the housing, and reaction lever connects as one and fixes with locking nut with the feedback rotating shaft; When reaction lever rotates, (can drive the reaction lever rotation when actuator moves up and down), it drives the feedback rotating shaft and the switch feeler lever is the center rotation with the axle sleeve, and split washer is used to prevent to feed back rotating shaft and moves axially in the axle sleeve upper edge.Split washer (totally 3) is used to prevent switch feeler lever moving axially along the feedback rotating shaft.Unclamp lock-screw, it is the circumferencial direction rotation at center that the switch feeler lever can wind with the feedback rotating shaft.The rotary switch feeler lever is behind the position that needs, and lock-screw is screwed into the switch feeler lever, and the switch feeler lever is fixed in the position of the circumferencial direction of feedback rotating shaft.
When the rotating shaft of reaction lever drive feedback with the axle sleeve is the center rotation,, feedback rotating shaft drive presses off contact-making switch thereby being fixed on the switch feeler lever rotation of feeding back in the rotating shaft.Two contact-making switches are installed in the travel switch, in the feedback rotating shaft, are fixed with two switch feeler levers.The switch feeler lever is fixed in the feedback rotating shaft by lock-screw, and adjustment position underaction causes the switch feeler lever easily and feeds back the loosening of rotating shaft behind the long-play.
Summary of the invention
The purpose of this invention is to provide a kind of travel switch, can improve the reliability of travel switch and adjust in the travel switch as required and the contacted particular location of contact-making switch.
A kind of travel switch; Comprise the feedback rotating shaft; Its special feature is, also comprises the last fast pulley and following fast pulley that are fixed in the feedback rotating shaft, is set with adjustment wheel and following adjustment wheel in the feedback rotating shaft on this between fast pulley and the following fast pulley; Wherein go up between adjustment wheel and following adjustment wheel and the feedback rotating shaft and be matched in clearance; And through gears engaged, also pass through gears engaged between following adjustment wheel and the following fast pulley between last adjustment wheel and the last fast pulley, take turns and following the adjustment is equipped with the compression spring between taking turns in last adjustment.
Thereby wherein on last adjustment wheel and following adjustment wheel, all have a jut and trigger corresponding contact-making switch.
Wherein going up fast pulley all is fixed in the feedback rotating shaft through elastic cylindrical pin with following fast pulley.
The internal tooth of wherein going up on the adjustment wheel meshes together with the external tooth on the last fast pulley, and the internal tooth on the adjustment wheel and the external tooth on the following fast pulley mesh together down.
Apparatus of the present invention are through adopting the quick contact positioning device of cam-type in travel switch inside; Solved the circumferential position adjustment problem of switch feeler lever and contact-making switch, the accuracy of detection that has improved travel switch has also improved the reliability that the adjustment wheel is connected with the feedback rotating shaft simultaneously with flexibility.
Description of drawings
Accompanying drawing 1 is the structural representation of background technology among the present invention;
Accompanying drawing 2 is the vertical view of background technology among the present invention;
Accompanying drawing 3 is a structural representation of the present invention;
Accompanying drawing 4 is a vertical view of the present invention;
Accompanying drawing 5 is the A-A cutaway view of Fig. 3.
Embodiment
Like Fig. 3,4, shown in 5; A kind of travel switch; Comprise feedback rotating shaft 6, also comprise the last fast pulley 4 and the following fast pulley 14 that are fixed in the feedback rotating shaft 6, be set with adjustment wheel 3 in the feedback rotating shaft 6 on this between fast pulley 4 and the following fast pulley 14 and adjust wheel 13 down; Wherein go up between adjustment wheel 3 and following adjustment wheel 13 and the feedback rotating shaft 6 and be matched in clearance; And between last adjustment wheel 3 and the last fast pulley 4 through gears engaged, between following adjustment wheel 13 and the following fast pulley 14 also through gears engaged, last adjustment take turns 3 and following adjust to be equipped with between taking turns 13 compress spring 7.Thereby wherein going up adjustment wheel 3 is the cam that has a jut with adjustment wheel 13 down and triggers corresponding contact-making switch.
Like Fig. 3,4, shown in 5, axle sleeve 8 adopts interference fit to be pressed on the housing 9, and reaction lever 12 connects as one with feedback rotating shaft 6 and be fixing with locking nut 11; Last fast pulley 4 is fixed in the feedback rotating shaft 6 through elastic cylindrical pin 5 with following fast pulley 14; Cam-like and have a jut can press off contact-making switch go up adjustment wheel 3 and down adjustment wheel 13 be installed in two and go up between fast pulley 4 and the following fast pulley 14, thereby at last adjustment wheel 3 with compression spring 7 is installed between the adjustment wheel 13 down on this both ends of the spring, adjust wheel 3 and following and adjust and take turns 13 and exert pressure; The internal tooth of two adjustment wheels the effect of compression spring 7 down and the external tooth of two fast pulleys mesh together; When reaction lever 12 rotations, (when moving up and down, actuator can drive reaction lever 12 rotations); Its drive feedback rotating shaft 6 and go up fast pulley 4, down fast pulley 14, go up adjustment wheel 3, adjustment wheel 13 and compression spring 7 be that the center rotates with axle sleeve 8 together down, split washer is used to prevent to feed back rotating shaft 6 and moves axially in axle sleeve 8 upper edges.
When last adjustment wheel 3 needs adjustment to go up the trigger position of contact-making switch 2; Last adjustment wheel 3 is applied a downward active force; Compression spring 7 is compressed, and to lower slider, throw off with the meshing gear of last fast pulley 4 by last adjustment wheel 3 along feedback rotating shaft 6 for last adjustment wheel 3; Adjustment wheel 3 can be done the position adjustment at the circumferencial direction that with feedback rotating shaft 6 is the center according to actual needs on this moment; The position confirms that the back removal is applied to the active force of adjustment wheel 3, and last adjustment wheel 3 feeds back rotating shaft 6 in the reseat pressure effect lower edge of spring and upwards slides, and last adjustment wheel 3 meshes with last fast pulley 4 again.
When adjustment wheel 13 needs the trigger position of contact-making switch 1 under the adjustment equally instantly; Apply an active force that makes progress to adjusting wheel 13 down; Compression spring 7 is compressed, and following adjustment wheel 13 upwards slides along feedback rotating shaft 6, and following adjustment wheel 13 is thrown off with the meshing gear of following fast pulley 14; This moment, adjustment wheel 13 can be done the position adjustment at the circumferencial direction that with feedback rotating shaft 6 is the center based on actual needs down; The position confirms that the back removal is applied to down the active force on the adjustment wheel 13, and following adjustment wheel 13 feeds back rotating shaft 6 to lower slider in the reseat pressure effect lower edge of spring, and following adjustment wheel 13 meshes with following fast pulley 14 again.
Because it is 0.2 interior external tooth engagement that modulus is adopted in the engagement between adjustment wheel and the fast pulley, thereby almost can ignore in adjustment wheel and the gap of fast pulley between circumferencial direction.This kind cam fast-positioning device can be applied in the stroke detection switch of instrument and meter industry pneumatic control valve; The switch feeler lever that has solved in the travel switch is adjusted problem with the circumferential position of contact-making switch; Improve the accuracy of detection and the flexibility of travel switch, also improved the reliability that the adjustment wheel is connected with rotating shaft simultaneously.
Claims (4)
1. travel switch; Comprise feedback rotating shaft (6); It is characterized in that: also comprise the last fast pulley (4) and the following fast pulley (14) that are fixed in the feedback rotating shaft (6); Be set with adjustment wheel (3) in the feedback rotating shaft (6) between fast pulley on this (4) and the following fast pulley (14) and adjust wheel (13) down, wherein go up between adjustment wheel (3) and following adjustment wheel (13) and the feedback rotating shaft (6) and be matched in clearance, and go up to adjust between wheel (3) and the last fast pulley (4) and pass through gears engaged; Also through gears engaged, compression spring (7) is installed between last adjustment wheel (3) and following adjustment wheel (13) between following adjustment wheel (13) and the following fast pulley (14).
2. a kind of travel switch as claimed in claim 1 is characterized in that: wherein last adjustment wheel (3) and adjustment down take turns (13) thus on all have a jut and trigger corresponding contact-making switch.
3. according to claim 1 or claim 2 a kind of travel switch is characterized in that: wherein go up fast pulley (4) and following fast pulley (14) and all be fixed in the feedback rotating shaft (6) through elastic cylindrical pin (5).
4. according to claim 1 or claim 2 a kind of travel switch, it is characterized in that: the internal tooth of wherein going up on the adjustment wheel (3) meshes together with the external tooth on the last fast pulley (4), and the internal tooth on the adjustment wheel (13) and the external tooth on the following fast pulley (14) mesh together down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104269865A CN102522231A (en) | 2011-12-19 | 2011-12-19 | Stroke switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104269865A CN102522231A (en) | 2011-12-19 | 2011-12-19 | Stroke switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102522231A true CN102522231A (en) | 2012-06-27 |
Family
ID=46293116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104269865A Pending CN102522231A (en) | 2011-12-19 | 2011-12-19 | Stroke switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102522231A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4124594A1 (en) * | 1991-07-25 | 1993-01-28 | Kostal Leopold Gmbh & Co Kg | Electrical switch for operating vehicle lights, indicator, windscreen wiper etc. - has contact element on spring-loaded input actuator located with small clearance relative to switching arm |
| CN2309613Y (en) * | 1997-06-04 | 1999-03-03 | 于光 | End tooth engaged adjustable cam mechanism |
| CN201084564Y (en) * | 2007-09-21 | 2008-07-09 | 平高集团有限公司 | Novel assistant switch |
| CN101409172A (en) * | 2008-12-04 | 2009-04-15 | 天水长城开关厂有限公司 | Electrically-operated mechanism for middle-low-tension switch cabinet grounding switch |
| CN202423037U (en) * | 2011-12-19 | 2012-09-05 | 吴忠仪表有限责任公司 | Cam-type contact positioning device for travel switch |
-
2011
- 2011-12-19 CN CN2011104269865A patent/CN102522231A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4124594A1 (en) * | 1991-07-25 | 1993-01-28 | Kostal Leopold Gmbh & Co Kg | Electrical switch for operating vehicle lights, indicator, windscreen wiper etc. - has contact element on spring-loaded input actuator located with small clearance relative to switching arm |
| CN2309613Y (en) * | 1997-06-04 | 1999-03-03 | 于光 | End tooth engaged adjustable cam mechanism |
| CN201084564Y (en) * | 2007-09-21 | 2008-07-09 | 平高集团有限公司 | Novel assistant switch |
| CN101409172A (en) * | 2008-12-04 | 2009-04-15 | 天水长城开关厂有限公司 | Electrically-operated mechanism for middle-low-tension switch cabinet grounding switch |
| CN202423037U (en) * | 2011-12-19 | 2012-09-05 | 吴忠仪表有限责任公司 | Cam-type contact positioning device for travel switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120627 |