CN208400724U - A kind of load switch - Google Patents
A kind of load switch Download PDFInfo
- Publication number
- CN208400724U CN208400724U CN201821173828.7U CN201821173828U CN208400724U CN 208400724 U CN208400724 U CN 208400724U CN 201821173828 U CN201821173828 U CN 201821173828U CN 208400724 U CN208400724 U CN 208400724U
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- movable contact
- flat part
- contact spring
- mounting portion
- load switch
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- 238000000926 separation method Methods 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims 1
- 230000035939 shock Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a kind of load switches, including moving conductive piece, quiet conductive sheet, movable contact spring and push card, the movable contact spring has first end and the second end, the first end of the movable contact spring is fixedly connected with the moving conductive piece, the second end of the movable contact spring is connect with the push card, the push card can drive the second end of the movable contact spring to the direction movement close to or far from the quiet conductive sheet so that movable contact and stationary contact point contact or separation, U-shaped portion is formed on the movable contact spring, the U-shaped portion is between the first end and movable contact；The U-shaped portion is made of the curved portion of the first flat part, the second flat part and connection first flat part and the second flat part；The length of first flat part and the second flat part is greater than twice of the spacing of first flat part and the second flat part.The load switch of the utility model improves the ability of shock resistance electric current, extends service life.
Description
Technical field
The utility model relates to a kind of load switches, in particular to a kind of to be applied to intelligent electric meter and industrial automation control
The load switch of system processed.
Background technique
Currently, load switch is widely used in intelligent electric meter and industrialization automatic control system, load switch is played pair
Circuit is switched on and off effect.
The contact that existing load switch generallys use movable contact and stationary contact realized with separating connection to circuit and
Cutting action, when load switch bears high-power load and the short-time current impact of superelevation, if movable contact and stationary contact
Between contact pressure it is inadequate, cause contact resistance to become larger, a large amount of heat can be generated when contacting between contact, make contacts welding viscous
It connects, influences the performance of load switch, or even damage load switch, the service life of load switch is made to shorten.
Utility model content
To solve the above problems, the utility model provides a kind of load switch, contact of the movable contact with stationary contact is reliable,
Extend the service life of load switch.
To achieve the above object, the load switch of the utility model, including moving conductive piece, quiet conductive sheet, movable contact spring and push away
Dynamic card, the movable contact spring have first end and the second end, and the quiet conductive sheet is equipped with stationary contact mounting portion, the stationary contact
Point mounting portion is equipped with stationary contact, and the second end of the movable contact spring is equipped with movable contact mounting portion, the movable contact mounting portion peace
Equipped with movable contact, the first end of the movable contact spring is fixedly connected with the moving conductive piece, the second end of the movable contact spring with
The push card connection, the push card can drive the second end of the movable contact spring to close to or far from the quiet conductive sheet
Direction it is mobile so that the movable contact and stationary contact point contact or separation, be formed with U-shaped portion, the U-shaped portion on the movable contact spring
Between the first end and movable contact；The U-shaped portion is by the first flat part, the second flat part and connection described first
The curved portion of flat part and the second flat part is constituted；It is flat that the length of first flat part and the second flat part is greater than described first
Twice of the spacing of plate portion and the second flat part.
Preferably, it when the movable contact spring has electric current to pass through, can be produced between first flat part and the second flat part
Raw repulsive force, the repulsive force can make the movable contact compress the stationary contact.
Preferably, relatively described second flat part of the movable contact mounting portion is inclined to set, the movable contact mounting portion
Far from second flat part one end to far from the quiet conductive sheet direction tilt, the movable contact mounting portion with it is described quiet
Contact mounting portion is arranged in parallel.
Preferably, the U-shaped portion is by being bent to form the movable contact spring.
Preferably, U-shaped hole is offered around the movable contact on the movable contact spring, the opening of the U-shaped hole is described in
First end.
Preferably, card slot is provided in the push card, the second end is equipped with the prominent knot cooperated with the card slot
Structure, the prominent structure are placed in the card slot.
Using the load switch of the utility model, movable contact and stationary contact point contact are more stable and reliable, and pressure increases between contact,
Contact resistance reduces, and improves the ability of shock resistance electric current, extends service life.
Detailed description of the invention
Fig. 1 is the schematic diagram of the load switch of the utility model；
Fig. 2 is the schematic diagram of movable contact spring in Fig. 1；
Fig. 3 is the main view of Fig. 2；
Fig. 4 is the side view of Fig. 2.
Specific embodiment
In order to enable the purpose of this utility model, technical solution and advantage are clearer, below in conjunction with the utility model
Attached drawing, the technical solution of the utility model is clearly and completely described.
Unless otherwise defined, the technical term or scientific term that the utility model uses should be disclosure fields
The ordinary meaning that the interior personage with general technical ability is understood.It is " first " used in the utility model, " second " and similar
Word be not offered as any sequence, quantity or importance, and be used only to distinguish different component parts."upper", "lower",
"left", "right" etc. is only used for indicating relative positional relationship, and after the absolute position for being described object changes, then the relative position is closed
System may also correspondingly change.
In order to keep the following explanation of the utility model to understand and concise, be omitted in specific embodiment known function and
The detailed description of known elements.
As shown in figures 1-4, the load switch of the utility model, including moving conductive piece 1, quiet conductive sheet 2, movable contact spring 3 and push away
Dynamic card 4, the movable contact spring 3 have first end 31 and the second end 32, and the quiet conductive sheet 2 is equipped with stationary contact mounting portion
21, stationary contact 20 is installed, the second end 32 of the movable contact spring 3 is equipped with movable contact mounting portion on the stationary contact mounting portion 21
321, movable contact 30, the first end 31 of the movable contact spring 3 and the moving conductive piece are installed on the movable contact mounting portion 321
1 is fixedly connected, and the second end 32 of the movable contact spring 3 is connect with the push card 4, and the push card 4 can drive described dynamic
The second end 32 of reed 3 is to the direction movement close to or far from the quiet conductive sheet 2 so that the movable contact 30 and stationary contact
20 contacts or separation, the push card 4 do linear reciprocating motion under the driving of driving mechanism.It is provided in the push card 4
Card slot 41, the second end 32 of the movable contact spring 3 and the card slot 41 are cooperatively connected, and specifically, the second end 32 is equipped with
With the protrusion structure 322 of the card slot 41 cooperation, the prominent structure 322 is placed in the card slot 41.
Be formed with U-shaped portion 33 on the movable contact spring 3, the U-shaped portion 33 be located at the first end 31 and movable contact 30 it
Between.The U-shaped portion 33 is flat by the first flat part 331, the second flat part 332 and connection first flat part 331 and second
The curved portion 333 in plate portion 332 is constituted.First flat part 331 and the second flat part 332 are preferably arranged in parallel, the U-shaped
Portion 33 is by being bent to form the movable contact spring 3.The U-shaped portion 33 is towards being equipped with movable contact 30 on the movable contact spring 3
One side protrusion, i.e., protrude to the left as shown in Figure 4, that is, the opening of the U-shaped portion 33 is directed away from the movable contact 30
On one side, i.e., it is open as shown in the figure to the right.
Using the structure of the U-shaped portion 33, when the movable contact 30 and the contact of stationary contact 20, have on the movable contact spring 3
Electric current passes through, and the sense of current at this moment passed through on first flat part 331 and the second flat part 332 is conversely, because Lip river logical sequence
Magneticaction generates repulsive force between first flat part 331 and the second flat part 332, since first end 31 is led with dynamic
Electric piece is fixedly connected, and the effect of repulsive force makes the second flat part 332 that will generate torque with 333 fulcrum of curved portion, from
And the movable contact 30 is made to compress the stationary contact 20, when electric current is bigger, generated repulsive force is bigger, the movable contact 30
Contacted with the stationary contact 20 closer, mutual pressure is bigger, and at this moment contact resistance is smaller, the movable contact 30 and described
The heat that the contact of stationary contact 20 generates also is just not easy to generate heat to lead to contacts welding bonding with regard to small.Therefore, when the dynamic spring
When piece 3 has electric current to pass through, repulsive force can be generated between first flat part 331 and the second flat part 332, the repulsive force energy
So that the movable contact 30 is compressed the stationary contact 20, keeps the movable contact 30 more reliable more steady with the contact of the stationary contact 20
It is fixed.
The length of usual first flat part 331 and the second flat part 332 is bigger, and the torque that repulsive force generates is bigger,
In the embodiments of the present invention, the length L of first flat part 331 and the second flat part 332 is greater than described first
Twice of the spacing d of flat part 331 and the second flat part 332, that is, L > 2d.Make first flat part 331 and second
Guarantee there are enough repulsive forces while the length L of flat part 332 is unlikely to excessive.
Relatively described second flat part 332 of the movable contact mounting portion 321 is inclined to set, the movable contact mounting portion
321 one end far from second flat part 332 are tilted to the direction far from the quiet conductive sheet 2, the movable contact mounting portion
321 are arranged in parallel with the stationary contact mounting portion 21.As shown, the movable contact mounting portion 321 and second flat part
332 angle α is less than 90 degree.When generating repulsive force between first flat part 331 and the second flat part 332, by institute
It states movable contact mounting portion 321 to be obliquely installed with the stationary contact mounting portion 21, makes the movable contact 30 and the stationary contact 20
Contact pressure it is bigger.
U-shaped hole 301 is offered around the movable contact 30 on the movable contact spring 3, and the opening of the U-shaped hole 301 is towards institute
State first end 31, i.e., opening upwards as shown in Figures 2 and 3.The U-shaped hole 301 is opened up, the movable contact installation can be increased
The elasticity of the movable contact 30 in portion 321.
Above embodiments are only the exemplary embodiment of the utility model, are not used in limitation the utility model, this is practical new
The protection scope of type is defined by the claims.Those skilled in the art can be in the essence and protection scope of the utility model
It is interior, various modifications or equivalent replacements are made to the utility model, this modification or equivalent replacement also should be regarded as falling in originally practical new
In the protection scope of type.
Claims (6)
1. a kind of load switch, including moving conductive piece, quiet conductive sheet, movable contact spring and push card, the movable contact spring has first end
Portion and the second end, the quiet conductive sheet are equipped with stationary contact mounting portion, and the stationary contact mounting portion is equipped with stationary contact, described
The second end of movable contact spring is equipped with movable contact mounting portion, and the movable contact mounting portion is equipped with movable contact, and the of the movable contact spring
One end is fixedly connected with the moving conductive piece, and the second end of the movable contact spring is connect with the push card, the push card
The second end of the movable contact spring can be driven to the direction movement close to or far from the quiet conductive sheet so that the movable contact
With stationary contact point contact or separation, which is characterized in that
U-shaped portion is formed on the movable contact spring, the U-shaped portion is between the first end and movable contact；
The U-shaped portion is by the first flat part, the second flat part and the arc for connecting first flat part and the second flat part
Portion is constituted；
The length of first flat part and the second flat part is greater than the two of the spacing of first flat part and the second flat part
Times.
2. load switch as described in claim 1, which is characterized in that when the movable contact spring has electric current to pass through, described first
Repulsive force can be generated between flat part and the second flat part, which can make the movable contact compress the stationary contact.
3. load switch as described in claim 1, which is characterized in that relatively described second flat part of the movable contact mounting portion
It is inclined to set, the one end of the movable contact mounting portion far from second flat part is inclined to the direction far from the quiet conductive sheet
Tiltedly, the movable contact mounting portion is arranged in parallel with the stationary contact mounting portion.
4. load switch as described in claim 1, which is characterized in that the U-shaped portion is by bending the movable contact spring
It is formed.
5. load switch as described in claim 1, which is characterized in that offer U around the movable contact on the movable contact spring
Shape hole, the opening of the U-shaped hole is towards the first end.
6. load switch as described in claim 1, which is characterized in that be provided with card slot, the second end in the push card
Portion is equipped with the protrusion structure cooperated with the card slot, and the prominent structure is placed in the card slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173828.7U CN208400724U (en) | 2018-07-23 | 2018-07-23 | A kind of load switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821173828.7U CN208400724U (en) | 2018-07-23 | 2018-07-23 | A kind of load switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208400724U true CN208400724U (en) | 2019-01-18 |
Family
ID=65128586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821173828.7U Active CN208400724U (en) | 2018-07-23 | 2018-07-23 | A kind of load switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208400724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752100A (en) * | 2018-07-23 | 2020-02-04 | 时太工业科技（上海）有限公司 | a load switch |
-
2018
- 2018-07-23 CN CN201821173828.7U patent/CN208400724U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752100A (en) * | 2018-07-23 | 2020-02-04 | 时太工业科技（上海）有限公司 | a load switch |
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