CN204029621U - High capacity direct current electric power tools switch - Google Patents
High capacity direct current electric power tools switch Download PDFInfo
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- CN204029621U CN204029621U CN201420471360.5U CN201420471360U CN204029621U CN 204029621 U CN204029621 U CN 204029621U CN 201420471360 U CN201420471360 U CN 201420471360U CN 204029621 U CN204029621 U CN 204029621U
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000004020 conductor Substances 0.000 claims description 3
- 238000010891 electric arc Methods 0.000 abstract description 5
- 238000010791 quenching Methods 0.000 abstract description 5
- 230000000171 quenching effect Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model discloses a kind of high capacity direct current electric power tools switch, comprise pedestal, end cap, main spring, push rod, handle, positive terminal, negative terminal, two motor terminals, fixed contact support, main contacts support and two contact bridges; Main contacts support is equipped with two main contactss, one of them main contacts contacts with positive terminal or disconnects, and another main contacts contacts with fixed contact support or disconnects; A contact bridge is by fixed contact support and a motor terminal electrical connection, and another contact bridge is by negative terminal and the electrical connection of another motor terminal.The utility model, compared with single contact high capacity switch, can divide the voltage born each contact equally well, and the working strength of each contact and working temperature are reduced; Compared with parallel double-contact high capacity switch, effectively can shorten the quenching time, reduce the time that high-temperature electric arc is born in contact, substantially prolongs the useful life of contact.
Description
Technical field
The utility model relates to a kind of construction of switch, specifically belongs to a kind of high capacity direct current electric power tools switch adopting main contacts series system.
Background technology
Nowadays, the power of electric tool improves constantly, and the thing followed is that the requirement of user to direct current electric power tools switch (abbreviation switch) is also more and more higher.But high voltage, rated current were that the direct current electric power tools switch (hereinafter referred to as high capacity switch) of more than 20A mainly has the following disadvantages in the past:
1. the main contacts of high capacity switch is single contact, the contact of this form carry high voltage and big current by time can produce higher temperature, so the working life of contact greatly shortens;
2. the main contacts of high capacity switch is two contacts be connected in parallel, due to the joint effect of operating voltage and electric current, electric arc can be produced when switch disjunction, contact is caused damage, voltage and electric current higher, then larger to the infringement of contact, the quenching time of the large electric arc that switch produces when disconnecting cannot be shortened in the contact of parallel form, thus very easily cause contact by serious ablation, the useful life of contact and switch cannot be ensured.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of high capacity direct current electric power tools switch, can reduce the infringement of high-voltage large current to contact, shorten the quenching time simultaneously, extends the useful life of contact and switch.
For solving the problems of the technologies described above, the high capacity direct current electric power tools switch that the utility model provides, comprise pedestal, end cap, main spring, push rod, handle, positive terminal, negative terminal and two motor terminals, also comprise fixed contact support, main contacts support and two contact bridges, described fixed contact support, main contacts support, two contact bridges, positive terminal, negative terminal, two motor terminals are all electric-conductors; Described main contacts support is equipped with two main contactss, one of them main contacts contacts with positive terminal or disconnects, and another main contacts contacts with fixed contact support or disconnects; A contact bridge is by fixed contact support and a motor terminal electrical connection, and another contact bridge is by negative terminal and the electrical connection of another motor terminal.
Wherein, described motor terminal comprises the first motor terminal, the second motor terminal, two main contactss are the first main contacts and the second main contacts respectively, two contact bridges are respectively the first contact bridge and the second contact bridge, wherein the first main contacts coordinates with the contact of fixed contact support, second main contacts coordinates with the contact of positive terminal, and the first contact bridge is communicated with fixed contact support and the first motor terminal, and the second contact bridge is communicated with negative terminal and the second motor terminal.
Described first contact bridge is arranged on fixed contact support, and the second contact bridge is arranged on negative terminal.
Described push rod is formed with the briquetting coordinated with main contacts, and two main contactss are respectively provided with a back-moving spring, and one end of back-moving spring is fixedly connected with main contacts, and the other end is fixed on pedestal;
When handle in the raw time, briquetting props up the rear end of two main contactss, and back-moving spring is in extended state, and the front end of two main contactss is in released state with fixed contact support and positive terminal respectively;
When pressing handle, push rod extruding main spring, briquetting is separated with the rear end of two main contactss, and two back-moving springs drive two main contactss to contact with positive terminal with fixed contact support respectively;
When release lever, main spring makes push rod reset, and briquetting props up the rear end of main contacts again, and back-moving spring is stretched and main contacts front end is disconnected with fixed contact support and positive terminal respectively.
Described two main contactss are L-type, handle in the raw time, the briquetting on push rod props up minor face one end of main contacts, and back-moving spring is stretched, and one end, long limit of main contacts is in upwarping state.
Described two main contactss are mounted obliquely within main contacts support, handle in the raw time, main contacts near one end of positive terminal and fixed contact support in upwarping state.
Described positive terminal, negative terminal, main contacts support, fixed contact support installing are between pedestal and end cap, wherein negative terminal be positioned at main contacts support side and near handle, positive terminal and fixed contact support be positioned at main contacts support opposite side and away from handle.
Described push rod and handle are plastic parts, and one end of push rod is fixedly connected with handle, and the other end is formed with cylindricality blind hole, and main spring is arranged in this cylindricality blind hole, and one end of main spring is positioned at cylindricality blind hole, and the other end is pressed on pedestal fixed contact support.
Usefulness of the present utility model is:
1) compared with existing single contact high capacity switch, switch of the present utility model adopts two main contactss of connecting, the voltage born each contact can be divided well equally, the working strength of each contact is reduced, the working temperature also corresponding step-down of contact;
2) compared with existing parallel double-contact high capacity switch, high capacity switch of the present utility model adopts series connection double-contact, effectively can shorten the quenching time, reduce the time that high-temperature electric arc is born in contact, experimental result also verifies the useful life that substantially prolongs contact.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of high capacity direct current electric power tools switch of the present utility model;
Fig. 2 is the current trend figure of high capacity direct current electric power tools switch of the present utility model;
Fig. 3 is the combination schematic diagram of high capacity direct current electric power tools switch of the present utility model.
Wherein description of reference numerals is as follows:
1 first motor terminal 2 end cap
3 commutation driving lever 4 first contact bridges
5 second contact bridge 6 fixed contact supports
7 negative terminal 8 positive terminals
9 main contacts support 10 first main contactss
11 second main contacts 12 main springs
13 pedestal 14 second motor terminals
15 push rod 16 handles
17 back-moving spring 18 briquettings
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
The high capacity direct current electric power tools switch that the utility model provides, as shown in Figure 1, comprise pedestal 13, end cap 2, main spring 12, push rod 15, handle 16, positive terminal 8, negative terminal 7, two motor terminals, fixed contact support 6, main contacts support 9 and two contact bridges, wherein fixed contact support 6, main contacts support 9, two contact bridges, positive terminal 8, negative terminal 7, two motor terminals are all electric-conductor (mostly being metalwork, as copper).Main contacts support 9 is equipped with two main contactss, one of them main contacts contacts with positive terminal 8 or disconnects, and another main contacts contacts with fixed contact support 6 or disconnects; A contact bridge is by fixed contact support 6 and a motor terminal electrical connection, and another contact bridge is by negative terminal 7 and the electrical connection of another motor terminal.
In the present embodiment, motor terminal comprises the first motor terminal 1, second motor terminal 14, two main contactss are the first main contacts 10 and the second main contacts 11 respectively, two contact bridges are respectively the first contact bridge 4 and the second contact bridge 5, wherein the first main contacts 10 coordinates with the contact of fixed contact support 6, second main contacts 11 coordinates with the contact of positive terminal 8, and the first contact bridge 4 is communicated with fixed contact support 6 and the first motor terminal 1, second contact bridge 5 is communicated with negative terminal 7 and the second motor terminal 14.Certainly, this is an embodiment of the present utility model, be not limited thereto, those skilled in the art can change this current circuit according to this embodiment, as exchanged the annexation of two main contactss 10,11 on main contacts support 9, namely the first main contacts 10 coordinates with the contact of positive terminal 8, and the second main contacts 11 coordinates with the contact of fixed contact support 6, or exchanges the annexation of two contact bridges.
In the present embodiment, the first contact bridge 4 to be arranged on fixed contact support 6 and to contact with the first motor terminal 1, and the second contact bridge 5 to be arranged on negative terminal 7 and to contact with the second motor terminal 14.
Push rod 15 is formed with the briquetting 18 coordinated with main contacts, and two main contactss 10,11 are respectively provided with a back-moving spring 17, and one end of back-moving spring 17 is fixedly connected with main contacts, and the other end is fixed on pedestal 13.
When handle 16 in the raw time, briquetting 18 props up the rear end of two main contactss, and back-moving spring 17 is in extended state, and the front end of two main contactss is in released state with fixed contact support 6 and positive terminal 8 respectively, as shown in Figure 3.When pressing handle 16, push rod 15 extrudes main spring 12, and briquetting 18 is separated with the rear end of two main contactss, and two back-moving springs 17 drive two main contactss to contact with positive terminal 8 with fixed contact support 6 respectively.When release lever 16, main spring 12 makes push rod 15 reset, and briquetting 18 props up the rear end of main contacts again, and back-moving spring 17 is stretched and main contacts front end is disconnected with fixed contact support 6 and positive terminal 8 respectively.
Two main contactss are L-type, and rotate centered by back-moving spring 17 with the fixing point of pedestal 13.Handle 16 in the raw time, the briquetting 18 on push rod 15 props up minor face one end of main contacts, and back-moving spring 17 is stretched, one end, long limit of main contacts in upwarping state, as shown in Figure 3; During pressing handle 16, push rod 15 slowly extrudes main spring 12, and briquetting 18 discharges minor face one end of main contacts, and two back-moving springs 17 recover reset condition, drives two main contactss rotate and contact with positive terminal 8 with fixed contact support 6.
As shown in Figure 3, positive terminal 8, negative terminal 7, main contacts support 9, fixed contact support 6 are arranged in the cavity between pedestal 13 and end cap 2, wherein negative terminal 7 be positioned at main contacts support 9 side and near handle 16, positive terminal 8 and fixed contact support 6 be positioned at main contacts support 9 opposite side and away from handle 16.Push rod 15 and handle 16 are plastic parts, one end of push rod 15 is fixedly connected with handle 16, the other end is formed with cylindricality blind hole, main spring 12 is arranged in this cylindricality blind hole, one end of main spring 12 is positioned at cylindricality blind hole, the other end is pressed on pedestal fixed contact support 6, and the effect of main spring 12 provides advance resistance or restoring force in push rod 15 motion process.In addition, the pedestal of this high capacity direct current electric power tools switch also has commutation driving lever 3.
When plant-grid connection switch and contact all closed after, electric current flows through switch in the following way, as shown in Figure 2, electric current, through positive terminal 8 → the second main contacts 11 → main contacts support 9 → the first main contacts 10 → fixed contact support 6 → the first contact bridge 4 → the first motor terminal 1 → external motor → the second motor terminal 14 → the second contact bridge 5 → negative terminal 7, forms a complete loop thus.
Compared with existing single contact high capacity switch, switch of the present utility model adopts two main contactss of connecting, and can divide the voltage born each contact well equally, and the working strength of each contact is reduced, the working temperature also corresponding step-down of contact; Compared with existing parallel double-contact high capacity switch, high capacity switch of the present utility model adopts series connection double-contact, effectively can shorten the quenching time, reduce the time that high-temperature electric arc is born in contact, experimental result also verifies the useful life that substantially prolongs contact.
By specific embodiment, the utility model has been described in detail above, but these are not formed restriction of the present utility model.When not departing from the utility model principle, those skilled in the art can make many distortion and equivalent replacement to annexation etc., and these also should be considered as protection range of the present utility model.
Claims (7)
1. a high capacity direct current electric power tools switch, comprise pedestal (13), end cap (2), main spring (12), push rod (15), handle (16), positive terminal (8), negative terminal (7) and two motor terminals, it is characterized in that, also comprise fixed contact support (6), main contacts support (9) and two contact bridges, described fixed contact support (6), main contacts support (9), two contact bridges, positive terminal (8), negative terminal (7), two motor terminals are all electric-conductors; Described main contacts support (9) is equipped with two main contactss, and one of them main contacts contacts with positive terminal (8) or disconnects, and another main contacts contacts with fixed contact support (6) or disconnects; A contact bridge is by fixed contact support (6) and a motor terminal electrical connection, and another contact bridge is by negative terminal (7) and the electrical connection of another motor terminal.
2. high capacity direct current electric power tools switch according to claim 1, it is characterized in that, described motor terminal comprises the first motor terminal (1), second motor terminal (14), two main contactss are the first main contacts (10) and the second main contacts (11) respectively, two contact bridges are respectively the first contact bridge (4) and the second contact bridge (5), wherein the first main contacts (10) coordinates with fixed contact support (6), second main contacts (11) coordinates with positive terminal (8), first contact bridge (4) is communicated with fixed contact support (6) and the first motor terminal (1), second contact bridge (5) is communicated with negative terminal (7) and the second motor terminal (14).
3. high capacity direct current electric power tools switch according to claim 2, it is characterized in that, described first contact bridge (4) is arranged on fixed contact support (6), and the second contact bridge (5) is arranged on negative terminal (7).
4. high capacity direct current electric power tools switch according to claim 1, it is characterized in that, described push rod (15) is formed with the briquetting (18) coordinated with main contacts, and two main contactss are respectively provided with a back-moving spring (17), one end of back-moving spring (17) is fixedly connected with main contacts, and the other end is fixed on pedestal (13);
When handle (16) in the raw time, briquetting (18) props up the rear end of two main contactss, and back-moving spring (17) is in extended state, the front end of two main contactss is in released state with fixed contact support (6) and positive terminal (8) respectively;
When pressing handle (16), push rod (15) extruding main spring (12), briquetting (18) is separated with the rear end of two main contactss, and two back-moving springs (17) drive two main contactss to contact with positive terminal (8) with fixed contact support (6) respectively;
When release lever (16), main spring (12) makes push rod (15) reset, briquetting (18) props up the rear end of main contacts again, and back-moving spring (17) is stretched and main contacts front end is disconnected with fixed contact support (6) and positive terminal (8) respectively.
5. high capacity direct current electric power tools switch according to claim 4, it is characterized in that, described two main contactss are L-type, handle (16) in the raw time, briquetting (18) on push rod (15) props up minor face one end of main contacts, back-moving spring (17) is stretched, and one end, long limit of main contacts is in upwarping state.
6. high capacity direct current electric power tools switch according to claim 1, it is characterized in that, described positive terminal (8), negative terminal (7), main contacts support (9), fixed contact support (6) are arranged between pedestal (13) and end cap (2), wherein negative terminal (7) be positioned at main contacts support (9) side and near handle (16), positive terminal (8) and fixed contact support (6) be positioned at main contacts support (9) opposite side and away from handle (16).
7. high capacity direct current electric power tools switch according to claim 1, it is characterized in that, described push rod (15) and handle (16) are plastic parts, one end of push rod (15) is fixedly connected with handle (16), the other end is formed with cylindricality blind hole, main spring (12) is arranged in this cylindricality blind hole, and one end of main spring (12) is positioned at cylindricality blind hole, and the other end is pressed on pedestal fixed contact support (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420471360.5U CN204029621U (en) | 2014-08-20 | 2014-08-20 | High capacity direct current electric power tools switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420471360.5U CN204029621U (en) | 2014-08-20 | 2014-08-20 | High capacity direct current electric power tools switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204029621U true CN204029621U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420471360.5U Active CN204029621U (en) | 2014-08-20 | 2014-08-20 | High capacity direct current electric power tools switch |
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| Country | Link |
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| CN (1) | CN204029621U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016106984A1 (en) * | 2014-12-31 | 2016-07-07 | 徐新生 | Armature circuit in electric tool and battery pack socket |
| WO2022199249A1 (en) * | 2021-03-25 | 2022-09-29 | 南京泉峰科技有限公司 | Electric tool |
-
2014
- 2014-08-20 CN CN201420471360.5U patent/CN204029621U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016106984A1 (en) * | 2014-12-31 | 2016-07-07 | 徐新生 | Armature circuit in electric tool and battery pack socket |
| WO2022199249A1 (en) * | 2021-03-25 | 2022-09-29 | 南京泉峰科技有限公司 | Electric tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 650, Qingda Road, Heqing Industrial Zone, Pudong New Area, Shanghai 201201 Patentee after: Marquardt Electronic Technology (Shanghai) Co.,Ltd. Country or region after: China Address before: No. 650, Qingda Road, Heqing Industrial Zone, Pudong New Area, Shanghai 201201 Patentee before: MARQUARDT SWITCHES (SHANGHAI) Co.,Ltd. Country or region before: China |