CN203596284U - DC speed regulation switch - Google Patents
DC speed regulation switch Download PDFInfo
- Publication number
- CN203596284U CN203596284U CN201320761217.5U CN201320761217U CN203596284U CN 203596284 U CN203596284 U CN 203596284U CN 201320761217 U CN201320761217 U CN 201320761217U CN 203596284 U CN203596284 U CN 203596284U
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- CN
- China
- Prior art keywords
- push rod
- contact
- direct current
- adjustment switch
- speed adjustment
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Abstract
The utility model relates to a DC speed regulation switch, and mainly solves a problem that a current DC speed regulation switch is of low current carrying capability and low working reliability. The DC speed regulation switch comprises a housing, a push rod, and a conductive mechanism, an electric shock mechanism and a speed regulation control circuit board which are disposed inside the housing. The conductive mechanism comprises a straight-through member. The electric shock mechanism comprises a first movable contact part, a second movable contact part, a first stationary contact sheet, a second stationary contact sheet and a speed regulation stationary contact sheet, and the first movable contact part and the second movable contact part are connected with the first stationary contact sheet respectively through a first support and a second support. A novel contact manner is employed in the utility model, and a linear contact manner between the movable contacts and the supports is replaced by a surface contact manner, so that the current carrying capability is greatly improved, and the DC speed regulation switch is safer and more reliable.
Description
Technical field
The utility model relates to a kind of switch, particularly a kind of direct current speed adjustment switch.
Background technology
Direct current speed adjustment switch is the very common a kind of electric elements of electric field, mainly by shell be placed in conductive mechanism, electric shock mechanism, the speed-regulating control circuit plate in shell, electric shock mechanism comprises moving contact and fixed contact, wherein between traditional moving contact calcaneus branches frame, the way of contact is linear contact, greatly lower current capacity, affected the fail safe of direct current speed adjustment switch.
Utility model content
Low in order to solve existing current capacity, the problem such as functional reliability is poor, the utility model provides a kind of safe and reliable direct current speed adjustment switch.
The technical scheme that the utility model adopts is: a kind of direct current speed adjustment switch, it comprises shell, push rod and is placed in conductive mechanism, electric shock mechanism, the speed-regulating control circuit plate in shell, described conductive mechanism comprises straight-through part, main spring, brake block, described electric shock mechanism comprises the first moving contact part, the second moving contact part, the first static contact, the second static contact and speed governing static contact, and described the first moving contact part, the second moving contact part are connected with the first static contact with the second support by the first support respectively;
Described the first moving contact part is integrated, comprises the first straightway, first fold curved segment, and is respectively bent to form a semicircular ring on the junction dual-side of the first straightway and first fold curved segment; Described the first support is made up of a metallic plate both sides bending 90 degree, and the bending part of described metallic plate has the semi-circular groove suitable with semicircular ring, and semicircular ring and semi-circular groove form rotation and coordinate.
In the middle of described metallic plate, have chamfering circular hole, described the first static contact is provided with the positioning boss suitable with chamfering circular hole.
Described push rod is provided with groove, between described groove and first fold curved segment, is provided with push rod component, and described push rod, push rod component form respectively slippage with first, second moving contact part and coordinate.
Described push rod component comprises steel ball, push rod spring and push rod and sleeve, described push rod and sleeve comprises cylinder and snap ring, described snap ring is trumpet type, its larger one end is fixed on cylinder, and both are integrally formed formula connection, and it is interior, suitable with snap ring that described steel ball is placed in push rod and sleeve, described push rod spring is built in push rod and sleeve, and one end and steel ball fit, the other end contacts with groove walls, and described push rod and sleeve is shorter than push rod spring.
Described the first straightway downside has a circular hole, is connected with the first contact, and described speed governing static contact is provided with the fixing hole for fixing the 3rd contact, and described the 3rd contact is parallel to the first contact.
Described the first contact and the 3rd contact, its electroplate.
Described main spring upper end connects brake block, and lower end is fixed on straight-through part, and described brake block contacts with the second static contact in the time of emergency brake.
The beneficial effects of the utility model are: the utility model adopts the new way of contact, and moving contact contacts from original linearity with support, changes into the contact of face, and contact area reaches 5-6mm
2current capacity increases to 20 ~ 25A by original 15A, greatly improves current capacity, makes direct current speed adjustment switch more safe and reliable; Change push rod component summit structure, greatly reduce the friction of push rod component and moving contact, increase the service life.
Accompanying drawing explanation
Fig. 1, Fig. 2 are the structural representation of the utility model inside.
Fig. 3, Fig. 4 are the explosive view of the utility model primary structure.
Fig. 5, Fig. 6, Fig. 7 are the partial structurtes installation diagram of Fig. 3 and Fig. 4.
Fig. 8 is the structural representation of the utility model part.
1-the first moving contact part, 11-the first straightway, 111-circular hole, 12-first fold curved segment, 13-semicircular ring, 2-the second moving contact part, 21-the second straightway, 22-the second bending section, 3-the first support, 31-metallic plate, 311-chamfering circular hole, 32-bending part, the semi-circular groove of 321-, 4-the first static contact, 41-positioning boss, 5-the first contact, 6-the second contact, 7-the 3rd contact, 8-the 4th contact, 9-leads directly to part, 91-fixing hole, 10-speed governing static contact, 101-location hole, 14-steel ball, 15-push rod spring, 16-push rod and sleeve, 161-cylinder, 162-snap ring, 17-the second support, 18-push rod, 19-groove, 20-main spring, 23-brake block, 24-the second static contact.
Embodiment
Below in conjunction with accompanying drawing, the utility model embodiment is described further:
As Figure 1-Figure 8, a kind of direct current speed adjustment switch, it comprises shell, push rod and is placed in conductive mechanism, electric shock mechanism, the speed-regulating control circuit plate in shell, described conductive mechanism comprises straight-through part 9, main spring 20, brake block 23, described electric shock mechanism comprises the first moving contact part 1, the second moving contact part 2, the first static contact 4, the second static contact 24 and speed governing static contact 10, and described the first moving contact part 1, the second moving contact part 2 are connected with the first static contact 4 with the second support 17 by the first support 3 respectively;
Described the first moving contact part 1 is integrated, comprises the first straightway 11, first fold curved segment 12, and is respectively bent to form a semicircular ring 13 on the junction dual-side of the first straightway 11 and first fold curved segment 12; Described the first support 3 is made up of a metallic plate 31 both sides bending 90 degree, and the bending part 32 of described metallic plate 31 has the semi-circular groove 321 suitable with semicircular ring 13, and semicircular ring 13 and semi-circular groove 321 form rotation and coordinate.Described the second moving contact part 2 is identical with the first moving contact part 1, therefore all do not repeat general introduction, described support can be parts independently, as the first support 3; Also can be to be directly made on the first static contact 4, as the second support 17.The utility model adopts two cover moving contact parts, moving contact and the Mechanical Contact structure of support is contacted to the contact of the face of being improved to by linearity simultaneously, and its contact area reaches 5.3mm
2, make current capacity increase to 20 ~ 25A by original 15A, improve the fail safe of direct current speed adjustment switch work.
In the middle of described metallic plate 31, have chamfering circular hole 311, described the first static contact 4 is provided with the positioning boss 41 suitable with chamfering circular hole 311, by positioning boss 41, by fixing the first static contact 4.
Described push rod 18 is provided with groove 19, between described groove 19 and first fold curved segment 12, be provided with push rod component, described push rod 18, push rod component and first, the second moving contact part forms respectively slippage and coordinates, described push rod component comprises steel ball 14, push rod spring 15 and push rod and sleeve 16, described push rod and sleeve 16 comprises cylinder 161 and snap ring 162, described snap ring 162 is trumpet type, its larger one end is fixed on cylinder 161, both are integrally formed formula and connect, described steel ball 14 is placed in push rod and sleeve 16, suitable with snap ring 162, described push rod spring 15 is built in 16 li of push rod and sleeve, and one end and steel ball 14 fit, the other end contacts with groove 19 inwalls, described push rod and sleeve 16 is shorter than push rod spring 15, when action, the salient point of steel ball 14 is first, in the section of fractureing of the second moving contact part, move up and down, original way of contact is changed into a little and the coordinating of face, greatly reduce the friction of push rod component and moving contact, extend the useful life of device.
Described the first straightway 11 downsides have a circular hole 111, be connected with the first contact 5, speed governing static contact 10 is provided with the location hole 101 for fixing the 3rd contact 7, described the 3rd contact 7 is parallel to the first contact 5, described the second straightway 21 downsides are provided with and identical the second contact 6, the first contact 5, described straight-through part 9 is provided with the fixing hole 91 for fixing the 4th contact 8, described the second contact 6 is parallel to and identical the 4th contact 8, the 3rd contact 7, the first contact 5 and the 3rd contact 7, the second contact 6 and the 4th contact 8, in the time that working, direct current speed adjustment switch contacts conducting, the multiple silver in its surface, each contact, resistance to wear is good, extend the useful life of device.
Described main spring 20 upper ends are socketed push rods 18, connect brake block 23 on top, and lower end is fixed on straight-through part 9, has certain decrement, described brake block 23 is through push rod 18, in the time of emergency brake, contact with the second static contact 24, form short circuit current with external motor, realize emergency brake.
Operation principle:
1) conducting
Press switch key, make push rod 18 to bottom offset, drive 2 cover push rod component servo-actuated, the salient point of steel ball 14 moves downward at the bending section of first, second moving contact part respectively, because bending section has the elastic force of certain angle of inclination and push rod spring 15, along with moving downward, the power that push rod component acts on bending section slowly reduces, first, second moving contact part straightway is replied nature plumbness, its first, second contact the respectively with three, the 4th contact contact, direct current speed adjustment switch conducting.
2) disconnect
Recover switch key, make push rod 18 to top offset, drive 2 cover push rod component servo-actuated, the salient point of steel ball 14 moves upward at the bending section of first, second moving contact part respectively, because bending section has the elastic force of certain angle of inclination and push rod spring 15, along with moving upward, the power that push rod component acts on bending section slowly increases, first, second moving contact part bending section moves to plumbness, straightway perk, its first, second contact the respectively with three, the 4th contact separation, direct current speed adjustment switch power-off.
Below described embodiment is only preferred implementation of the present utility model by reference to the accompanying drawings, and the not restriction to protection range of the present utility model, any improvement of doing based on the utility model spirit all ought to be within the utility model protection range.
Claims (7)
1. a direct current speed adjustment switch, it comprises shell, push rod (18) and be placed in the conductive mechanism in shell, electric shock mechanism, speed-regulating control circuit plate, it is characterized in that: described conductive mechanism comprises straight-through part (9), main spring (20), brake block (23), described electric shock mechanism comprises the first moving contact part (1), the second moving contact part (2), the first static contact (4), the second static contact (24) and speed governing static contact (10), described the first moving contact part, the second moving contact part (2) is connected with the first static contact (4) with the second support (17) by the first support (3) respectively,
Described the first moving contact part (1) is integrated, comprises the first straightway (11), first fold curved segment (12), and is respectively bent to form a semicircular ring (13) on the junction dual-side of the first straightway (11) and first fold curved segment (12); Described the first support (3) is made up of a metallic plate (31) both sides bending 90 degree, the bending part (32) of described metallic plate (31) has the semi-circular groove (321) suitable with semicircular ring (13), and semicircular ring (13) and semi-circular groove (321) form rotation and coordinate.
2. direct current speed adjustment switch according to claim 1, is characterized in that: in the middle of described metallic plate (31), have chamfering circular hole (311), described the first static contact (4) is provided with the positioning boss (41) suitable with chamfering circular hole (311).
3. direct current speed adjustment switch according to claim 1, it is characterized in that: described push rod (18) is provided with groove (19), between described groove (19) and first fold curved segment (12), be provided with push rod component, described push rod (18), push rod component form respectively slippage with first, second moving contact part and coordinate.
4. direct current speed adjustment switch according to claim 3, it is characterized in that: described push rod component comprises steel ball (14), push rod spring (15) and push rod and sleeve (16), described push rod and sleeve (16) comprises cylinder (161) and snap ring (162), described snap ring (162) is trumpet type, its larger one end is fixed on cylinder (161), both are integrally formed formula and connect, described steel ball (14) is placed in push rod and sleeve (16), suitable with snap ring (162), it is inner that described push rod spring (15) is built in push rod and sleeve (16), and one end and steel ball (14) fit, the other end contacts with groove (19) wall, described push rod and sleeve (16) is than push rod spring short (15).
5. direct current speed adjustment switch according to claim 1, it is characterized in that: described the first straightway (11) downside has a circular hole (111), be connected with the first contact (5), described speed governing static contact (10) is provided with the fixing hole (101) for fixing the 3rd contact (7), and described the 3rd contact (7) is parallel to the first contact (5).
6. direct current speed adjustment switch according to claim 5, is characterized in that: described the first contact (5) and the 3rd contact (7), its electroplate.
7. direct current speed adjustment switch according to claim 1, it is characterized in that: described main spring (20) upper end connects brake block (23), it is upper that lower end is fixed on straight-through part (9), and described brake block (23) contacts with the second static contact (24) in the time of emergency brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320761217.5U CN203596284U (en) | 2013-11-27 | 2013-11-27 | DC speed regulation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320761217.5U CN203596284U (en) | 2013-11-27 | 2013-11-27 | DC speed regulation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596284U true CN203596284U (en) | 2014-05-14 |
Family
ID=50677149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320761217.5U Expired - Fee Related CN203596284U (en) | 2013-11-27 | 2013-11-27 | DC speed regulation switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596284U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489413A (en) * | 2015-12-04 | 2016-04-13 | 张家港华捷电子有限公司 | Shockproof direct current switch of motor |
-
2013
- 2013-11-27 CN CN201320761217.5U patent/CN203596284U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105489413A (en) * | 2015-12-04 | 2016-04-13 | 张家港华捷电子有限公司 | Shockproof direct current switch of motor |
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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: 20140514 Termination date: 20211127 |