CN101901700A - Machinery safety switch - Google Patents
Machinery safety switch Download PDFInfo
- Publication number
- CN101901700A CN101901700A CN 201010188537 CN201010188537A CN101901700A CN 101901700 A CN101901700 A CN 101901700A CN 201010188537 CN201010188537 CN 201010188537 CN 201010188537 A CN201010188537 A CN 201010188537A CN 101901700 A CN101901700 A CN 101901700A
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- contact
- gear
- ing
- rest
- safety switch
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Abstract
The invention discloses a machinery safety switch which comprises a switch shell, stationary contacts, sliding contacts, a gear and a rack and is characterized in that the switch shell is provided with the gear and the stationary contacts, the gear is provided with the sliding contacts, the sliding contacts move through a transmission pair consisting of the gear and the rack, the stationary contacts are contacted with the sliding contacts to realize communication between every two stationary contacts, and disconnection between every two stationary contacts is realized through disconnection of the stationary contacts and the sliding contacts. The switch is a compulsive machinery safety switch and can efficiently ensure the safety of an operator by adopting the structure.
Description
Technical field
The present invention relates to the safety protection technique field of hand-held tool, particularly a kind of machinery safety switch.
Background technology
Blow in leaf, the phyllidium function through being everlasting when blowing Bothridium Machine and using and change, particularly when using the phyllidium function, need open the protective cover of machine, machine could normally use after the phyllidium pipe is installed.If open protective cover the time machine also the running, can have serious potential safety hazard to the operator.Therefore must adopt a kind of structure to make that machine shuts down immediately when protective cover is opened, avoid potential safety hazard.
At present, the general method that adopts is to solve the problems referred to above by safety switch is set, and this switch adopts flexible member to reset, yet flexible member uses increase in time very easily to lose efficacy, and in a single day flexible member lost efficacy, and may cause serious injury the operator.The present invention adopts machinery safety switch to switch on and off not to be by flexible member and realizes, but realizes by the positive motion of gear and tooth bar.
Summary of the invention
The object of the invention provides a kind of machinery safety switch; when the machine protective cover be opened or the people when removing; the transmission that the contact of machinery safety switch is formed by gear and tooth bar is forced to disconnect; thereby force machine to shut down; protection operator's safety; and only after protective cover resetted again or installs, machine just can restart.
The technical scheme that the present invention takes is, a kind of machinery safety switch, comprise switch case, rest(ing) contact, sliding contact, gear, tooth bar, it is characterized in that: switch case is provided with gear and rest(ing) contact, said gear is provided with sliding contact, and the motion of sliding contact is to realize by the transmission that gear and tooth bar constitute; Rest(ing) contact and sliding contact contact the connection that realizes between rest(ing) contact, the disconnection between the disconnection realization rest(ing) contact of rest(ing) contact and sliding contact.
At least be provided with two rest(ing) contacts on the switch case, rest(ing) contact links to each other with lead with control circuit; Gear can be made full-depth tooth as required or have only the part profile of tooth; On the switch case reduction torsion spring can be set as required.
The said structure that is had according to the present invention, its course of work is as follows: the machinery safety switch body fastens on volute of blower by screw, tooth bar in the machinery safety switch is embedded on the protective cover and phyllidium pipe that blows Bothridium Machine, the control circuit that blows Bothridium Machine links to each other with the rest(ing) contact of machinery safety switch, makes the control circuit that blows Bothridium Machine constitute a loop by machinery safety switch like this.The variation that is installed in protective cover or phyllidium pipe upper rack position comes driven gear to rotate, thereby relative variation takes place in the position of rest(ing) contact on making the sliding contact that is embedded on the gear and being embedded in switch case, and being switched on or switched off between rest(ing) contact and sliding contact controlled the running of blowing Bothridium Machine or stopped.Needs according to the function use, increase reduction torsion spring is installed, torsion spring one end is installed on the switch case, the other end is installed on the gear, when gear shaft imports the middle part of button spring into, gear in the machinery safety switch resets to certain position under the situation that is not subjected to the tooth bar constraint, make two rest(ing) contacts in the machinery safety switch be closure state under normal conditions, also can be off-state as required, guarantee that the machinery safety switch machine when gear is not subjected to tooth bar control that blows Bothridium Machine is in the state that shuts down; When machinery requirement uses the phyllidium function, open the protective cover that blows Bothridium Machine, be installed in the gear type control contact that the rack type manipulator on the protective cover is stirred Safe control switch, make two contactings in the flush switch housing, blow the control circuit short circuit of Bothridium Machine, machine shuts down by force.After the phyllidium pipe is in place, be embedded in the gear type control contact that the rack type manipulator in the phyllidium pipe is stirred Safe control switch once more, make two contacts disconnection in the flush switch housing, the control circuit that blows Bothridium Machine opens circuit, blowing Bothridium Machine can normally start, in case when protective cover or phyllidium pipe broke away from the safe handling position, machinery safety switch just made machine be in the state of shutting down.
The invention has the beneficial effects as follows, first the transmission of rack-and-pinion is applied in the machinery safety switch that the positive mechanical safety switch is carried out action, guaranteed that the operator's is safe in utilization.
Description of drawings
Fig. 1 is the structural representation of machinery safety switch of the present invention
Fig. 2 is the cross section view of machinery safety switch of the present invention
Fig. 3 blows the cross section view that Bothridium Machine uses the phyllidium function
Sequence number explanation in the accompanying drawing: 1, switch case; 2, tapping screw; 3, torsion spring; 4, gear; 5, gear shaft; 6, control circuit; 7, rest(ing) contact; 8, sliding contact; 9, tooth bar; 10, protective cover; 11, phyllidium pipe; 12, machinery safety switch body; 13, screw; 14, volute of blower; 15, blow Bothridium Machine.
Embodiment
As Fig. 1, Fig. 2, Figure 3 shows that specific embodiments of the present invention, switch case 1 dimidiation is provided with rest(ing) contact 7, sliding contact 8 is embedded on the gear 4, gear 4 combines as a whole with gear shaft 5.The two halves switch housing connects as one by tapping screw 2, and gear 4 and gear shaft 5 are installed between the two halves switch housing.
Machinery safety switch body 12 is fastened on the volute of blower 14 by screw 13.Tooth bar 9 in the machinery safety switch be embedded on the protective cover 10 that blows Bothridium Machine 15 and phyllidium pipe 11 on.The control circuit 6 that blows Bothridium Machine 15 links to each other with the rest(ing) contact 7 of machinery safety switch, makes the control circuit 6 that blows Bothridium Machine 15 constitute a loop by safety switch.
Come driven gear 14 to rotate by the variation that is installed in protective cover 10 or phyllidium pipe 11 upper racks 9 positions, thus the relative variation of position generation of the rest(ing) contact 7 on making the sliding contact 8 that is embedded on the gear 4 and being embedded in switch case 1.Rest(ing) contact 7 and sliding contact 8 contact the connection that realizes 7 of rest(ing) contacts, the disconnection that the disconnection realization rest(ing) contact of rest(ing) contact 7 and sliding contact 8 is 7.Being switched on or switched off of 7 of rest(ing) contacts controlled the running of blowing Bothridium Machine 15 or stopped.
According to the needs that function is used, increase reduction torsion spring 3 is installed.Torsion spring 3 one ends are installed on the switch case 1, the other end is installed on the gear 4, when gear shaft 5 imports the middle part of button spring 3 into, gear 4 in the Safe control switch resets to certain position under the situation that is not subjected to tooth bar 9 constraints, make two rest(ing) contacts in the machinery safety switch be closure state under normal conditions, also can be off-state as required, guarantee that the machinery safety switch machine when gear 4 is not subjected to tooth bar 9 controls that blows Bothridium Machine 15 is in the state that shuts down.
When machinery requirement uses the phyllidium function, open the protective cover 10 that blows Bothridium Machine 15, install phyllidium pipe 11.Process control is as follows, when opening the protective cover 10 of machine, be installed in the gear type control contact that the rack type manipulator on the protective cover 10 is stirred safety switch, make two contactings in the flush switch housing 1, blow control circuit 6 short circuits of Bothridium Machine 15, machine shuts down by force.After phyllidium pipe 11 is in place, be embedded in the gear type control contact that the rack type manipulator in the phyllidium pipe 11 is stirred safety switch once more, make two contacts disconnection in the flush switch housing 1, the control circuit 6 that blows Bothridium Machine 15 opens circuit.Blowing Bothridium Machine 15 can normally start.In case when protective cover 10 or phyllidium pipe 11 broke away from the safe handling position, machinery safety switch just made machine be in the state of shutting down.
In the whole operation process, the contact of machinery safety switch is mechanical switching on and off, rather than realizes by flexible member, thereby reaches the object of the invention.
Claims (4)
1. machinery safety switch, comprise switch case, rest(ing) contact, sliding contact, gear, tooth bar, it is characterized in that: switch case is provided with gear and rest(ing) contact, said gear is provided with sliding contact, and the motion of sliding contact is to realize by the transmission that gear and tooth bar constitute; Rest(ing) contact and sliding contact contact the connection that realizes between rest(ing) contact, the disconnection between the disconnection realization rest(ing) contact of rest(ing) contact and sliding contact.
2. a kind of machinery safety switch according to claim 1 is characterized in that: be provided with 2 rest(ing) contacts on the said switch case at least, rest(ing) contact links to each other with lead with control circuit.
3. a kind of machinery safety switch according to claim 1 is characterized in that: said gear can be made full-depth tooth as required or have only the part profile of tooth.
4. a kind of machinery safety switch according to claim 1 and 2 is characterized in that: on the said switch case reduction torsion spring can be set as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188537 CN101901700A (en) | 2010-05-20 | 2010-05-20 | Machinery safety switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010188537 CN101901700A (en) | 2010-05-20 | 2010-05-20 | Machinery safety switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101901700A true CN101901700A (en) | 2010-12-01 |
Family
ID=43227156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010188537 Pending CN101901700A (en) | 2010-05-20 | 2010-05-20 | Machinery safety switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101901700A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217632A (en) * | 2017-06-06 | 2017-09-29 | 浙江亚特电器有限公司 | A kind of blower of safe operation |
| CN108758501A (en) * | 2018-05-06 | 2018-11-06 | 蒋培 | One kind being convenient for fixed LED illumination lamp device |
| CN111351993A (en) * | 2020-03-13 | 2020-06-30 | 青海省药品检验检测院 | Electrostatic attenuation tester |
| CN111579027A (en) * | 2020-05-25 | 2020-08-25 | 安徽华希电力科技有限公司 | Cable tunnel environment water level monitoring system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597559A (en) * | 1968-10-02 | 1971-08-03 | Smit Nijemgen Electrotechnisch | Geneva gear sectors mounted on a common shaft for the stepwise rotation of the switching contacts of rotary switches |
| CN1955379A (en) * | 2005-05-30 | 2007-05-02 | 苏州利维科电器有限公司 | Garden tool |
| CN200949221Y (en) * | 2006-06-03 | 2007-09-19 | 黄源 | Leaf suction machine air duct connecting equipment with safety switch |
| CN200971480Y (en) * | 2006-09-08 | 2007-11-07 | 慈溪市贝士达电动工具有限公司 | Hand four-wheel induced-draft apparatus |
| CN201758084U (en) * | 2010-05-20 | 2011-03-09 | 山东华盛农业药械股份有限公司 | Mechanical safety switch |
-
2010
- 2010-05-20 CN CN 201010188537 patent/CN101901700A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3597559A (en) * | 1968-10-02 | 1971-08-03 | Smit Nijemgen Electrotechnisch | Geneva gear sectors mounted on a common shaft for the stepwise rotation of the switching contacts of rotary switches |
| CN1955379A (en) * | 2005-05-30 | 2007-05-02 | 苏州利维科电器有限公司 | Garden tool |
| CN200949221Y (en) * | 2006-06-03 | 2007-09-19 | 黄源 | Leaf suction machine air duct connecting equipment with safety switch |
| CN200971480Y (en) * | 2006-09-08 | 2007-11-07 | 慈溪市贝士达电动工具有限公司 | Hand four-wheel induced-draft apparatus |
| CN201758084U (en) * | 2010-05-20 | 2011-03-09 | 山东华盛农业药械股份有限公司 | Mechanical safety switch |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107217632A (en) * | 2017-06-06 | 2017-09-29 | 浙江亚特电器有限公司 | A kind of blower of safe operation |
| CN108758501A (en) * | 2018-05-06 | 2018-11-06 | 蒋培 | One kind being convenient for fixed LED illumination lamp device |
| CN108758501B (en) * | 2018-05-06 | 2020-08-28 | 江苏般若电子工业有限公司 | LED lighting lamp device convenient to fix |
| CN111351993A (en) * | 2020-03-13 | 2020-06-30 | 青海省药品检验检测院 | Electrostatic attenuation tester |
| CN111579027A (en) * | 2020-05-25 | 2020-08-25 | 安徽华希电力科技有限公司 | Cable tunnel environment water level monitoring system |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101201 |