CN202230896U - Switch device with lever ratio - Google Patents
Switch device with lever ratio Download PDFInfo
- Publication number
- CN202230896U CN202230896U CN2011203523370U CN201120352337U CN202230896U CN 202230896 U CN202230896 U CN 202230896U CN 2011203523370 U CN2011203523370 U CN 2011203523370U CN 201120352337 U CN201120352337 U CN 201120352337U CN 202230896 U CN202230896 U CN 202230896U
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- CN
- China
- Prior art keywords
- rocking arm
- contact
- rotating shaft
- lever ratio
- partner
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- 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 - Lifetime
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
A switch device with a lever ratio comprises a shell, a rocking arm, a rotating shaft, a contact supporting, a movable contact bridge and a static contact. The rocking arm can be arranged on the rotating shaft rotationally, one end of the rocking arm is a drive end, and the other end is a driven end; the contact supporting is in contact connection with the driven end of the rocking arm driving the contact supporting to move, and is connected with the movable contact bridge at the side close to the static contact; the proportion of the level ratio b to a of a distance b between the driven end of the rocking arm and the rotating shaft center and the distance a between the drive end of the rocking arm and the rotating shaft center is greater than 1. The beneficial effects of the utility model are that the switch device with the lever ratio is strong in breaking capacity, long in service life, simple in structure, low in cost and convenient in mounting.
Description
Technical field
The utility model relates to a kind of switching device that has lever ratio.
Technical background
The conversion equipment of existing contactor is to move with main body when changing; Its stroke ratio is 1:1; Cause in the stroke of contactor adhesive phase transition device before conversion the needs accumulation just can make the contactor adhesive, make that the contactor energy consumption is big, correspondingly have power loss and thermal radiation than macro-energy.And there is complex structure in existing conversion equipment, the shortcoming that cost is high.
Summary of the invention
The utility model will solve that existing contactor exists that energy consumption is big, complex structure, problem that cost is high, and the switching device that has lever ratio that a kind of cost is low, simple in structure, breaking capacity is strong is provided.
The technical scheme of the utility model:
A kind of switching device that has lever ratio; Comprise shell, rocking arm, rotating shaft, contact support, movable contact bridge, fixed contact; Said rocking arm is rotatable to be installed in the rotating shaft; One end of said rocking arm is a drive end, and its other end is a Partner, and said contact support is connected with the Partner contact of the rocking arm that drives its motion; Said contact support is connected with the movable contact bridge near the fixed contact side, it is characterized in that: the Partner of said rocking arm to the drive end of the distance b at rotating shaft center and said rocking arm arrive the rotating shaft center apart from the ratio of the lever ratio b:a of a greater than 1.
Further, the proportion of the lever ratio b:a of said rocking arm is 1 <b:a≤5.
Further, said rocking arm has one and above drive end and one and above Partner.
Further, said contact support and rocking arm are resetted by back-moving spring, and the upper end of said back-moving spring is connected on the keeper that is fixed on the shell, and its lower end is connected on the end face of contact support.
Further, the Partner of said rocking arm is that tangent transmission contact is connected with the contact support.
Further, said movable contact bridge and said fixed contact are over against setting.
Further, said rotating shaft and shell are integrative-structures.
Perhaps, said rotating shaft is to be fixedly connected on the shell.
The utility model is different to the distance at rotating shaft center of Partner and drive end through rocking arm; Promptly the lever ratio through making rocking arm is greater than 1; The transmission ratios that realizes clearance between open contacts and stroke is greater than 1; Amplify the shift position that contact is supported with this, the ability that the increase of clearance between open contacts makes the switch disjunction start big electric current strengthens.And the transmission ratios of clearance between open contacts and stroke can be provided with as required.
The movable contact bridge of the utility model is when the rocking arm drive end is pressed with the contact of fixed contact, and its Partner drives the contact support and moves downward, and the movable contact bridge that contact is supported contacts with fixed contact; And the movable contact bridge is under the effect of its elastic force, to drive contact support and rocking arm through back-moving spring to reset and make movable contact bridge disengaging fixed contact with the disconnection of fixed contact, and this construction of switch is simple, cost is low, is convenient to installation.
The beneficial effect of the utility model: breaking capacity is strong, the life-span is long, simple in structure, cost is low, be convenient to install.
Description of drawings
Fig. 1 is the structural representation of the movable contact bridge of the utility model when contacting with fixed contact.
Fig. 2 is the structural representation of movable contact bridge and the fixed contact of the utility model when breaking away from.
Embodiment
With reference to accompanying drawing 1, Fig. 2; A kind of switching device that has lever ratio; Comprise shell 7, rocking arm 1, rotating shaft 6, contact support 2, movable contact bridge 4, fixed contact 5, said rocking arm 1 rotatable being installed in the rotating shaft 6, an end of said rocking arm 1 is a drive end 11; Its other end is a Partner 12; Said contact supports 2 to be connected with Partner 12 contacts of the rocking arm 1 that drives its motion, and said contact support 2 is connected with movable contact bridge 4 near fixed contact 5 sides, the drive end 11 that the Partner 12 of said rocking arm 1 arrives distance b and the said rocking arm 1 at rotating shaft 6 centers arrive rotating shaft 6 centers apart from the ratio of the lever ratio b:a of a greater than 1.
The proportion of the lever ratio b:a of said rocking arm 1 is 1 <b:a≤5.
Said rocking arm 1 has one and above drive end and one and above Partner.
Said contact support 2 is resetted by back-moving spring 3 with rocking arm 1, and the upper end of said back-moving spring 3 is connected on the keeper 8 that is fixed on the shell 7, and its lower end is connected on the end face of contact support 2.
The Partner 12 of said rocking arm 1 is that tangent transmission contact is connected with contact support 2.
Said movable contact bridge 4 is over against setting with said fixed contact 5.
Said rotating shaft 6 is integrative-structures with shell 7.Also can be that said rotating shaft 6 is to be fixedly connected on the shell 7.
The utility model is different to the distance at rotating shaft 6 centers of Partner 12 and drive end 11 through rocking arm 1; Promptly the lever ratio through making rocking arm 1 is greater than 1; The transmission ratios that realizes clearance between open contacts and stroke is greater than 1; Amplify contact with this and support 2 shift position, the ability that the increase of clearance between open contacts makes the switch disjunction start big electric current strengthens.And the transmission ratios of clearance between open contacts and stroke can be provided with as required.
The movable contact bridge 4 of the utility model is when rocking arm 1 drive end 11 is pressed with the contact of fixed contact 5, and its Partner 12 drives contact support 2 and moves downward, and makes contact support the movable contact bridge 4 on 2 to contact with fixed contact 5; And movable contact bridge 4 is under the effect of its elastic force, to drive contact support 2 through back-moving spring 3 to reset with rocking arm 1 and make movable contact bridge 4 disengaging fixed contacts 5 with the disconnection of fixed contact 5, and this construction of switch is simple, cost is low, is convenient to installation.
The lever ratio b:a apart from a of the Partner 12 of the said rocking arm 1 in the present embodiment to the drive end 11 of the distance b at rotating shaft center and said rocking arm 1 to the rotating shaft center approximates 2.5 times.When rocking arm 1 drive end 11 was pressed, the distance that Partner 12 vertically moves was about 2.5 times of drive end 11 distance of vertically moving.
The described content of this specification embodiment only is enumerating the way of realization of utility model design; The protection range of the utility model should not be regarded as and only limit to the concrete form that embodiment states, the protection range of the utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (8)
1. switching device that has lever ratio; Comprise shell, rocking arm, rotating shaft, contact support, movable contact bridge, fixed contact; Said rocking arm is rotatable to be installed in the rotating shaft; One end of said rocking arm is a drive end, and its other end is a Partner, and said contact support is connected with the Partner contact of the rocking arm that drives its motion; Said contact support is connected with the movable contact bridge near the fixed contact side, it is characterized in that: the Partner of said rocking arm to the drive end of the distance b at rotating shaft center and said rocking arm arrive the rotating shaft center apart from the ratio of the lever ratio b:a of a greater than 1.
2. a kind of switching device that has lever ratio according to claim 1 is characterized in that: the proportion of the lever ratio b:a of said rocking arm is 1 <b:a≤5.
3. a kind of switching device that has lever ratio according to claim 1 and 2 is characterized in that: said rocking arm has one and above drive end and one and above Partner.
4. a kind of switching device that has lever ratio according to claim 3; It is characterized in that: said contact support and rocking arm are resetted by back-moving spring; The upper end of said back-moving spring is connected on the keeper that is fixed on the shell, and its lower end is connected on the end face of contact support.
5. a kind of switching device that has lever ratio according to claim 4 is characterized in that: the Partner of said rocking arm is that tangent transmission contact is connected with the contact support.
6. a kind of switching device that has lever ratio according to claim 5 is characterized in that: said movable contact bridge and said fixed contact are over against setting.
7. a kind of switching device that has lever ratio according to claim 6, it is characterized in that: said rotating shaft and shell are integrative-structures.
8. a kind of switching device that has lever ratio according to claim 6, it is characterized in that: said rotating shaft is to be fixedly connected on the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203523370U CN202230896U (en) | 2011-09-20 | 2011-09-20 | Switch device with lever ratio |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203523370U CN202230896U (en) | 2011-09-20 | 2011-09-20 | Switch device with lever ratio |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202230896U true CN202230896U (en) | 2012-05-23 |
Family
ID=46081474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203523370U Expired - Lifetime CN202230896U (en) | 2011-09-20 | 2011-09-20 | Switch device with lever ratio |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202230896U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426945A (en) * | 2011-09-20 | 2012-04-25 | 上海诺雅克电气有限公司 | Switching device with lever ratio |
| CN103762100A (en) * | 2014-01-18 | 2014-04-30 | 叶春林 | Switch capable of being triggered in multiple forms |
-
2011
- 2011-09-20 CN CN2011203523370U patent/CN202230896U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102426945A (en) * | 2011-09-20 | 2012-04-25 | 上海诺雅克电气有限公司 | Switching device with lever ratio |
| CN103762100A (en) * | 2014-01-18 | 2014-04-30 | 叶春林 | Switch capable of being triggered in multiple forms |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
|
| CX01 | Expiry of patent term |