CN203774105U - Bump switch of washing machine - Google Patents
Bump switch of washing machine Download PDFInfo
- Publication number
- CN203774105U CN203774105U CN201420140222.9U CN201420140222U CN203774105U CN 203774105 U CN203774105 U CN 203774105U CN 201420140222 U CN201420140222 U CN 201420140222U CN 203774105 U CN203774105 U CN 203774105U
- Authority
- CN
- China
- Prior art keywords
- switch
- fork
- contact spring
- reed
- washing machine
- Prior art date
- 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
Links
- 238000005406 washing Methods 0.000 title claims abstract description 30
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 32
- 229920003023 plastic Polymers 0.000 claims abstract description 32
- 239000004033 plastic Substances 0.000 claims abstract description 32
- 230000003068 static effect Effects 0.000 claims abstract description 22
- 238000001746 injection moulding Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 102000004315 Forkhead Transcription Factors Human genes 0.000 description 1
- 108090000852 Forkhead Transcription Factors Proteins 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The utility model relates to a bump switch of a washing machine, which comprises a switch box, a swing rod and a switch reed set. The upper part of the swing rod is rotatably connected with the lower part of the switch box. The upper end of the switch rod extends into the switch box for forming a touching end. The switch reed set comprises a dynamic reed and a static reed. The bump switch of the washing machine is characterized in that: a plastic block is fixed on the dynamic reed; the touching end of the swing rod is arranged at side part of the plastic block; and on condition that the swing rod swings, the touching end of the swing rod can touch the plastic block and furthermore the dynamic reed is pushed, thereby separating the dynamic contact and the static contact. The bump switch has advantages of small number of related components and simple structure. The plastic block is pushed through the touching end of the swing rod for forcing the dynamic reed to deflect. The touching end of the swing rod functions on the dynamic reed sideways. The dynamic reed does not easily deform under the function of the swing rod, thereby settling a technical problem of inferior electric contact caused by reed deformation.
Description
Technical field
The utility model relates to a kind of control safety switch of washing machine, relates in particular to a kind of bump switch of washing machine that allows washing machine drum stop operating fast when washing machine drum generation eccentric operating.
Background technology
Bump switch of washing machine is the safety protection switch of laundry machine dehydration while rocking, and in the washing machine drum motion that deflects, surpasses while setting limit, and open circuit forces shutdown.Existing bump switch of washing machine adopts the long fork of metal to swing the action of shock sensitive switch mostly, long fork adopts torsion spring to reset, this sensitive switch that hits barrel switch requires to clash into enough reset distances, conventionally be greater than 8 millimeters, and large stroke reduces fork and washing machine drum spacing, washing machine drum collides for a long time fork and easily causes fork distortion, causes producing noise.
A kind of structure as disclosed in the patent No. Chinese utility model patent < < bump switch of washing machine > > that is ZL201020666771.1 (notification number is CN201918269U), comprise plastic box type switch case, built-in relative switch spring, perception washing machine drum swings the plastics fork of ejection switch spring, on fork, swing fulcrum, and spring or reed that fork is resetted, it is characterized in that switch spring is up and down or left and right is opposed, switch spring is normally off; The normally closed reed folding of switch direction has at least an adjusting reed to open the adjustment screw of distance, for changing fork, backs down reed contact stroke; Fork head is long-short foot or single pin Y shape, and swinging fulcrum is that the short pin of Y or single pin crotch protrude two fulcrums to both sides, and switch case bottom surface has for fork backs down the long pin insertion of switch spring Y opening, the long pin of Y with back down the spacing bending place of normally closed reed and contact.
This switch is due to the power of fork with the end face perpendicular to reed, it is the direct touch switch reed of positive force, when the movement range of fork is excessive, very easily cause the distortion of switch spring, and this closure of hitting barrel switch relies on the precompression of upper reed plate to realize completely, therefore the distortion of upper reed plate, by badly influencing the closed contact force of switch spring, causes poor electric contact.As limited the back down amplitude of fork to upper reed plate, the movement range of fork will be restricted, and cause the security control ability of washing machine to weaken, the adjustment of the washing machine drum shaking amplitude that is difficult to close, as increase adjustment screw reed is regulated, make the structure display of this switch obtain complicated.
Summary of the invention
Technical problem to be solved in the utility model is for above-mentioned prior art present situation, to provide a kind of fork lateral action in the bump switch of washing machine of a slice switch spring to force switch spring separation to be opened circuit wherein, the reed of this switch is not yielding under the ejection effect of fork yet, solves the technical problem that causes poor electric contact because of switch spring distortion.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of bump switch of washing machine, comprise switch enclosure, fork, in switch enclosure, be provided with switch spring group, the top of fork is rotatably connected on the bottom of switch enclosure, the upper end of fork is stretched in switch enclosure and is formed and touch end, and the shake-up end of fork can swing and coordinate with described switch spring group touching with fork; Described switch spring group comprises movable contact spring and static contact spring piece, and described movable contact spring is vertical with static contact spring piece and be listed in switch enclosure and each interval, and the moving contact on movable contact spring and the fixed contact on static contact spring piece are normally off; It is characterized in that: on described movable contact spring, be fixed with unit of plastic, the shake-up end of described fork is positioned at the sidepiece of unit of plastic, under the state swinging at fork, the shake-up end of described fork can be touched described unit of plastic and then promote movable contact spring, and moving contact and fixed contact are separated from each other.
Because the amplitude of the shake-up end swing of fork is less, as improvement, the shake-up end in contact end face of above-mentioned unit of plastic and fork is inclined-plane, and the end face that described shake-up end contacts with unit of plastic is cambered surface.This structure can not only make fork touch the more smooth and easy promotion unit of plastic of swing of end; under the effect of inclined-plane guiding, can make to touch end swing by a small margin and realize movable contact spring deflection by a relatively large margin, guarantee that moving contact is completely separated with fixed contact; reliable in action, the safeguard protection performance of use is better.
Above-mentioned movable contact spring is flat, and described movable contact spring forms integrative-structure together with unit of plastic integrated injection molding.Be applicable to like this this movable contact spring with unit of plastic of batch production, lower production cost, also can guarantee in addition unit of plastic be combined with movable contact spring firm.
The rear wall of above-mentioned switch enclosure is provided with two reed troughs, and the rear end of described movable contact spring and static contact spring piece is fastened on respectively in corresponding reed trough.Reed trough provides suitable and fixing installation position to movable contact spring and static contact spring piece, makes the installation of movable contact spring and static contact spring piece simpler and accurate.
Above-mentioned static contact spring piece has the first flat segments, tilting section and the second flat segments, and tilting section connects the first flat segments and the second flat segments, and described the first flat segments is fastened in a reed trough on switch enclosure rear wall, and described fixed contact is located in the second flat segments.Can make like this first flat segments of static contact spring piece and the spacing between movable contact spring increase, guarantee to have the space of the shake-up end of enough layout unit of plastics and fork between movable contact spring and static contact spring piece, the setting of tilting section also can make moving contact effectively contact with fixed contact in addition.
Above-mentioned switch enclosure has drain pan and upper cover is involutory fixedly forms.Convenient each parts of assembling in switch enclosure.
Compared with prior art, the utility model has the advantage of: originally hitting a barrel switch, to relate to parts few and simple in structure, shake-up end promotion unit of plastic by fork forces movable contact spring deflection, the shake-up of fork is distolateral to acting on movable contact spring, movable contact spring is not yielding under the effect of fork, solves the technical problem that causes poor electric contact because of switch spring distortion.
Accompanying drawing explanation
Fig. 1 is the perspective view of the utility model embodiment;
Fig. 2 is the partial sectional view of the utility model embodiment;
Fig. 3 is the perspective view of fork in the utility model embodiment;
Fig. 4 is the perspective view of movable contact spring in the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the utility model.
As shown in Fig. 1～4, it is a preferred embodiment of the present utility model.
A bump switch of washing machine, comprises switch enclosure 1, fork 2, is provided with switch spring group in switch enclosure 1, and switch enclosure 1 has drain pan 11 and upper cover 12 is involutory fixedly forms.The top of fork 2 is rotatably connected on the bottom of switch enclosure 1, between the shoulder of fork 2 and the bottom surface of switch enclosure, be supported with the spring 4 that fork is resetted, the upper end of fork 2 is stretched into the interior formation of switch enclosure 1 and is touched end 21, and the shake-up end 21 of fork can swing and coordinate with the touching of switch spring group with fork 2.It is more than the conventional design of bump switch of washing machine.
Switch spring group comprises movable contact spring 3 and static contact spring piece 5, movable contact spring 3 is vertical with static contact spring piece 5 and be listed in switch enclosure 1 and each interval, and the fixed contact 51 on the moving contact on movable contact spring 3 31 and static contact spring piece 5 is normally off, the rear wall of switch enclosure 1 is provided with two reed troughs 111, and the rear end of movable contact spring 3 and static contact spring piece 5 is fastened on respectively in corresponding reed trough 111.On movable contact spring 3, be fixed with unit of plastic 6, the shake-up end 21 of fork is positioned at the sidepiece of unit of plastic 6, and under the state swinging at fork 2, the shake-up end 21 of fork can be touched unit of plastic 6 and then promote movable contact spring 3, and moving contact 31 and fixed contact 51 are separated from each other.
It is inclined-plane 61 that unit of plastic 6 contacts end face with the shake-up end 21 of fork, and touching end 21 end faces that contact with unit of plastic 6 is cambered surface 211.
Movable contact spring 3 is flat, and movable contact spring 3 forms integrative-structure together with unit of plastic 6 integrated injection moldings.
Static contact spring piece 5 has the first flat segments 52, tilting section 53 and the second flat segments 54, tilting section 53 connects the first flat segments 52 and the second flat segments 54, the first flat segments 52 is fastened in a reed trough 111 on switch enclosure 1 rear wall, and fixed contact 51 is located in the second flat segments 54.
Originally hit barrel switch under free state, fork 2 returns back to original position under the effect of spring 4, and the shake-up end 21 of fork does not contact with unit of plastic 6, and the moving contact 31 on movable contact spring 3 contacts conducting with the fixed contact 51 on static contact spring piece 5.
At washing machine drum, occur under the eccentric state rocking; washing machine drum promotes the bottom of fork 2; fork 2 is swung around the articulated position with switch enclosure 1; the shake-up end 21 of fork swings forward; until contact with unit of plastic 6, the shake-up of fork holds 21 side direction to promote unit of plastic 6, and then movable contact spring 3 is deformed; force moving contact 31 and fixed contact 51 to be separated from each other, washing machine power-off protection.
Claims (6)
1. a bump switch of washing machine, comprise switch enclosure (1), fork (2), switch enclosure is provided with switch spring group in (1), the top of fork (2) is rotatably connected on the bottom of switch enclosure (1), the upper end of fork (2) is stretched in switch enclosure (1) and is formed and touch end (21), and the shake-up end (21) of fork can swing and coordinate with described switch spring group touching with fork (2); Described switch spring group comprises movable contact spring (3) and static contact spring piece (5), described movable contact spring (3) is vertical with static contact spring piece (5) and be listed in switch enclosure (1) and each interval, and the moving contact (31) on movable contact spring (3) and the fixed contact (51) on static contact spring piece (5) are normally off; It is characterized in that: on described movable contact spring (3), be fixed with unit of plastic (6), the shake-up end (21) of described fork is positioned at the sidepiece of unit of plastic (6), under the state swinging at fork (2), the shake-up end (21) of described fork can be touched described unit of plastic (6) and then promote movable contact spring (3), and moving contact (31) and fixed contact (51) are separated from each other.
2. bump switch of washing machine according to claim 1, it is characterized in that: it is inclined-plane (61) that described unit of plastic (6) contacts end face with the shake-up end (21) of fork, and the end face that described shake-up end (21) contacts with unit of plastic (6) is cambered surface (211).
3. bump switch of washing machine according to claim 1 and 2, is characterized in that: described movable contact spring (3) is flat, and described movable contact spring (3) forms integrative-structure together with unit of plastic (6) integrated injection molding.
4. bump switch of washing machine according to claim 1, it is characterized in that: the rear wall of described switch enclosure (1) is provided with two reed troughs (111), the rear end of described movable contact spring (3) and static contact spring piece (5) is fastened on respectively in corresponding reed trough (111).
5. bump switch of washing machine according to claim 1, it is characterized in that: described static contact spring piece (5) has the first flat segments (52), tilting section (53) and the second flat segments (54), tilting section (53) connects the first flat segments (52) and the second flat segments (54), described the first flat segments (52) is fastened in the reed trough (111) on switch enclosure (1) rear wall, and described fixed contact (51) is located in the second flat segments (54).
6. bump switch of washing machine according to claim 1, is characterized in that: described switch enclosure (1) has drain pan (11) and upper cover (12) is involutory fixedly forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420140222.9U CN203774105U (en) | 2014-03-26 | 2014-03-26 | Bump switch of washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420140222.9U CN203774105U (en) | 2014-03-26 | 2014-03-26 | Bump switch of washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203774105U true CN203774105U (en) | 2014-08-13 |
Family
ID=51291263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420140222.9U Expired - Lifetime CN203774105U (en) | 2014-03-26 | 2014-03-26 | Bump switch of washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203774105U (en) |
-
2014
- 2014-03-26 CN CN201420140222.9U patent/CN203774105U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: 315181 Heng Jie Lin Cun, Haishu District, Ningbo City, Zhejiang Province Patentee after: NINGBO DONGHAI TIMER Co.,Ltd. Address before: 315181, Zhejiang, Ningbo province Yinzhou District Heng Lin Village Patentee before: NINGBO DONGHAI TIMER Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |
|
| CX01 | Expiry of patent term |