CN2579926Y - Washing machine clutch of screw knob spring clutch structure - Google Patents
Washing machine clutch of screw knob spring clutch structure Download PDFInfo
- Publication number
- CN2579926Y CN2579926Y CN 02225272 CN02225272U CN2579926Y CN 2579926 Y CN2579926 Y CN 2579926Y CN 02225272 CN02225272 CN 02225272 CN 02225272 U CN02225272 U CN 02225272U CN 2579926 Y CN2579926 Y CN 2579926Y
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- clutch
- ratchet
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Abstract
The utility model relates to a clutch with a screw torsional spring clutch structure for washers, which is used in full automatic washers and has the functions of a mechanical braking function and a move stopping function. The utility model uses a screw torsional spring clutch structure to transmit dewatering rotation. The utility model is characterized in that both end parts of a clutch spring of the clutch are respectively connected to parts which can make the end parts loosened and expanded, for example, the end parts are arranged on a pawl structure with two ratchets in a reverse direction. Because both end parts of the clutch spring are controlled, the clutch spring is fully loosened and expanded when a control mechanism of the clutch is in a non-drive state, and thus, friction between an input sleeve and a connecting shaft sleeve is fully eliminated, the input sleeve and the connecting shaft sleeve can be reliably disconnected, the utility model can effectively eliminate abrasion of a move stopping mechanism by friction which makes rotation from an input shaft transmitted into a dewatering shaft in the prior art, even mistake amplexus actions, etc., and the service life of the clutch structure and a move stopping structure can be obviously extended.
Description
Technical field
The utility model relate to a kind of with helical torsion spring clutch structure transmission dehydration rotatory force and have mechanical braking and the dynamic resistance function be used for full auto washing machine clutch.
Background technology
With helical torsion spring clutch structure transmission dehydration rotatory force and have mechanical braking and the clutch of dynamic resistance function, be used for the existing very long history of automatic washing machine.Its typical structure is found in " home appliance repair handbook (People's Education Publishing House September in 1993 the 2nd edition, 283 pages).As shown in Figure 1, this clutch comprises: wash shaft (1), be placed in the outer hollow dehydrating shaft (2) of wash shaft, the input cover (12) of dehydrating shaft (2), power shaft (16), connecting shaft cover (15) on the power shaft (16), clutch spring (14), the ratchet (18) that links to each other and to make it to unscrew with the bottom of clutch spring (14), the ratchet (19) of control ratchet (18), the control lever (20) of driving click (19), be attached to the brake drum and the brake band (9) thereof of dehydrating shaft (2), the actuating arm (21) of brake band (9), be placed in the check spring (24) on the dehydrating shaft (2).In automatic washing machine, under dynamic Control such as electromagnet or tractor, the action of control lever (20) and actuating arm (21) can make clutch appliance that two kinds of states are arranged: when control lever (20) and actuating arm (21) are in non-driven state (being that automatic washing machine is in non-dewatering state), ratchet (19) is stirred ratchet (18), make clutch spring (14) begin to be the distending state that unscrews from the bottom that ratchet (18) links to each other, make it and import cover (12) and connecting shaft cover (15) all loses coupling, also lose coupling between input cover (12) and the connecting shaft cover (15), make from the rotatory force of power shaft (16) and can not import dehydrating shaft (2) into, dehydrating shaft (2) also is subjected to the reverse braking of brake band (9) of non-action status and the forward dynamic resistance of check spring (24) simultaneously, prevention drives the rotation of following of dehydrating shaft (2) generation because of wash shaft (1) rotation, and avoid rotating by the reverse drive of transmission mechanism to dehydrating shaft (2) coupling because of wash shaft (1), to guarantee the washing running effect; When being driven (being that automatic washing machine is in the dewatering state) at control lever (20) and actuating arm (21), actuating arm (21) opens brake band (9), make it withdraw from reverse on-position to dehydrating shaft (2), the forward dynamic resistance effect of check spring (24) then allows dehydrating shaft (2) backwards rotation; Simultaneously, control lever (20) makes ratchet (19) leave ratchet (18), clutch spring (14) recovers the rolling-in state of nature, promptly all form coupling with input cover (12) and connecting shaft cover (15), input is overlapped between (12) and the connecting shaft cover (15) thereby coupling, makes from the backwards rotation of power shaft (16) and imports dehydrating shaft (2) effectively into.
The shortcoming of prior art is: clutch spring (14) only links to each other with a ratchet (18) that can make it to unscrew with the bottom, and the upper end is a free end.The action of ratchet (18) is to make clutch spring (14) begin to unscrew or rolling-in from the bottom.The upper end then need rely on pivoting friction to follow to enter and unscrew or the state of rolling-in.Thereby between clutch spring and input cover and the connecting shaft cover more relative motion wearing and tearing are arranged; Brake band and check spring also are subjected to repeated stock and wearing and tearing in the dynamic resistance when laundry.The result is that the power that imports dehydrating shaft from power shaft into is not enough gradually, so that dehydration is weak; The dynamic resistance effect reduces gradually, and the dehydration barrel transfer influences laundry effect during down to laundry.Serious situation can cause clutch input cover to drive clutch spring one end with generation relative motion of clutch spring or input cover and rotate, so that produce the common automatic washing machine fault of two classes: the one, the input cover produces wearing and tearing with the long-term relative motion friction of clutch spring, the clutch spring can not be held clutch input cover tightly, causes the fault of the running of can not dewatering; The 2nd, input cover drives clutch spring one end and rotates, and the connecting shaft cover is held in the easy misoperation of clutch spring tightly, cause can only unidirectional laundry fault.
The utility model content
Technical problem to be solved in the utility model is: proposed a kind of structure comparatively simple, make and install all more convenient, the clutch spring can be opened fully reliably, wear and tear and miss the full auto washing machine clutch that obvolvent is moved avoiding.
The technical solution of the utility model is: a kind of clutch coupling of washing machine of helical torsion spring clutch structure comprises:
---be placed in the outer hollow dehydrating shaft of wash shaft and with the input cover of its coupling:
---power shaft reaches the connecting shaft cover with its coupling;
---unscrewed distending separating, or natural rolling-in with coupling from the clutch spring of connecting shaft cover to the transmission of input cover;
---be connected with the clutch spring, by its natural rolling-in, make the ratchet of its loose distending in the state of stirring in the non-state of stirring;
---make described ratchet be in the non-state of stirring in operating state, make described ratchet be in the ratchet and the control lever thereof of the state of stirring in non-action status;
---be attached on the dehydrating shaft under non-driven state its braking, remove the forward dynamic resistance mechanism and the reverse brake band of its braking down and make them and actuating arm that ratchet moves simultaneously in driving condition;
It is characterized in that: two ends of described clutch spring are connected on the described ratchet respectively.
One of further design of described technical scheme is: described clutch is characterised in that: the described click that makes the clutch spring unscrew distending is two clicks of oppositely installing.
Two of the further design of described technical scheme is: described clutch is characterised in that described reverse arrestment mechanism is single brake band, and described forward dynamic resistance mechanism is a check spring; When control lever and actuating arm were in non-driven state (being that automatic washing machine is in non-dewatering state), single brake band and check spring all produced braking to the rotation of suitable, contrary two directions; When control lever and actuating arm are driven, allow dehydrating shaft to rotate along the dehydration direction.
Three of the further design of described technical scheme is: described clutch is characterised in that described forward dynamic resistance mechanism and reverse brake band also are brake bands for the former, and two brake bands of action when combining with latter institute; When control lever and actuating arm were in non-driven state (being that automatic washing machine is in non-dewatering state), two brake bands all produced braking to the rotation of suitable, contrary both direction; When control lever and actuating arm are driven, allow dehydrating shaft to rotate along the dehydration direction.
Clutch of the present utility model, because two ends up and down of its clutch spring all are controlled, when controlling organization and driving mechanism are in non-driven state, actuating mechanism and coupling part make it fully to unscrew distending from two ends of clutch spring, thereby and import between cover and the connecting shaft cover and eliminate friction fully, also take off idol more reliably between input cover and the connecting shaft cover, eliminate prior art fully and import dehydrating shaft into to faults such as the wearing and tearing of its dynamic resistance mechanism even mistake obvolvent actions, can obviously prolong the service life of clutch structure and dynamic resistance structure because friction makes from the rotation of power shaft.
One of further design of described technical scheme has utilized prior art to make the clutch spring unscrew the click structure of distending, but is improved to two click structures of reverse installation, and is simple and reliable and cost is low.Two dynamic resistance mechanism of the further design of described technical scheme utilizes prior art, and is simple in structure, makes and installs all very convenient.Design three in dynamic resistance mechanism be with a brake body replace design two in check spring, help reducing cost.
Description of drawings
The following drawings is used to illustrate embodiment of the present utility model.
Fig. 1 be the prior art clutch cutaway view.
Fig. 2 is the cutaway view of the utility model the 1st embodiment clutch.
Fig. 3 is the ratchet mechanism cutaway view of the utility model the 1st embodiment clutch under non-driven state.
Fig. 4 is the ratchet mechanism cutaway view of the utility model the 1st embodiment clutch under driving condition.
Fig. 5 is the schematic diagram of the dynamic resistance mechanism take-off the brake body of the utility model the 1st embodiment clutch.
Fig. 6 is the cutaway view of the utility model the 2nd embodiment clutch.
The specific embodiment
Cutaway view such as Fig. 2 of the utility model the 1st embodiment clutch comprise wash shaft 1 and are enclosed within the outer hollow dehydrating shaft 2 of wash shaft, and an oiliness bearing 3 and 6 supportings are respectively arranged up and down between them.There are a loam cake 7 and lower house 10 to connect together in its periphery.One sealing device 4 is arranged between loam cake and the dehydrating shaft.Lower house 10 surrounds the brake drum 8 that links together with dehydrating shaft 2.The brake body 9 of banded (also can be bulk) is subjected to actuating arm 21 controls between lower house 10 and brake drum 8.The lower end of brake drum 8 is overlapped 12 with the input outside being enclosed within power shaft 16 and is linked to each other.Oiliness bearing 11 and 13 supportings are arranged between this input cover 12 and the power shaft 16.There is connecting shaft cover 15 to be inserted in power shaft 16 under the input cover 12.Connecting shaft cover 15 rotates with power shaft 16.What be placed in that input cover 12 and connecting shaft overlap 15 peripheries is the two ratchets 18 that link to each other with the both ends of clutch spring 14 and can make it to unscrew, and two ratchets 18 are that two sour jujubes are to opposite ratchet 18a and 18b; At the two ratchets 19 of the peripheral disposition of two ratchets 18, promptly two are in the ratchet 19b that staggered positions is controlled the ratchet 19a of ratchet 18a respectively and controlled ratchet 18b, see Fig. 3 and Fig. 4 (parts 22 and parts 23 are used to the command range of adjusting among the figure).Two ratchet 19 controlled bar 20 controls.The end of the upper end of clutch spring 14 snaps in the ratchet 18a, and the end of bottom snaps in the ratchet 18b.When two ratchets 18, promptly two sour jujubes to opposite ratchet 18a and 18b by ratchet 19, the ratchet 19b that promptly controls the ratchet 19a of ratchet 18a and control ratchet 18b stirs or when resetting simultaneously, clutch spring 14 is correspondingly unscrewed distending or is recovered the rolling-in state of nature, thereby unclamp or hold input cover 12 and connecting shaft cover 15 tightly, reach the function of clutch.Also be with in dehydrating shaft 2 peripheries as its check spring 24 of dynamic resistance mechanism forward.In the present embodiment, all the structure with the single ratchet of prior art is identical for the layout of each end of clutch spring method, ratchet of snapping in ratchet and ratchet etc.
The course of work of the 1st embodiment clutch configuration is as follows: when non-driven state (being that automatic washing machine is in non-dewatering state), two ratchet 19-19a and 19b stir two ratchet 18-18a and 18b respectively, impose rightabout torque, ratchet 18a and 18b backward rotation, make the clutch spring 14 that is connected unscrew distending, thereby unclamp input cover 12 and connecting shaft cover 15, make it to lose coupling.Dehydrating shaft 2 also is subjected to the reverse braking of brake band 9 of non-action status and the forward dynamic resistance of check spring 24 simultaneously, avoids driving because of wash shaft 1 rotation the rotation of following of dehydrating shaft 2 generations.At this moment, automatic washing machine can enter normal washing or rinsing state.When control lever 20 and actuating arm 21 are entered driving condition by certain strokes of traction such as the electromagnet to discharge water of automatic washing machine or tractors, when (being that automatic washing machine is in the dewatering state), two ratchet 19-19a and 19b break away from two ratchet 18-18a and 18b respectively, the clutch spring 14 that ratchet 18a is connected with 18b recovers the rolling-in state of nature, promptly all form coupling with input cover 12 and connecting shaft cover 15, import between cover 12 and the connecting shaft cover 15 thereby coupling, make from the rotation of power shaft 16 and imported into dehydrating shaft 2; Actuating arm 21 opens brake body 9 (see figure 5)s, makes it to withdrawing from the moving state of dehydrating shaft 2 brakings; The forward dynamic resistance effect of check spring 24 allows dehydrating shaft 2 backwards rotation; At this moment, automatic washing machine can enter normal dewatering state.
The cutaway view of the utility model the 2nd embodiment clutch is seen Fig. 6.The difference of itself and the 1st embodiment mainly be its forward dynamic resistance mechanism and reverse arrestment mechanism are made up of two brake band 9a and 9b.Brake band 9a has replaced the check spring 24 among the 1st embodiment, and brake band 9b is equivalent to the brake band 9 among the 1st embodiment.(tow lugl is around the direction) dynamic resistance of two brake band 9a and 9b or opposite with braking direction, to be similar to the check spring 24 among the embodiment 1 and the principle work of brake band 9, actual effect is also roughly the same respectively for they.But the cost of brake band is lower than check spring.In this class clutch, also can replace check spring with unilateral bearing, reliability is also relatively good, but cost can be high.
Claims (4)
1. the clutch coupling of washing machine of a helical torsion spring clutch structure comprises:
---be placed in the outer hollow dehydrating shaft (2) of wash shaft (1) and with the input cover (12) of its coupling;
---power shaft (16) reaches the connecting shaft cover (15) with its coupling;
---it is outer and separate with it or the clutch spring (14) of coupling to be placed in connecting shaft cover (15) and input cover (12);
---the ratchet that is connected with clutch spring (14) (18,18a, 18b);
---with described ratchet (18,18a, 18b) ratchet of coupling (19,19a, 19b) and control lever (20);
---be attached to forward dynamic resistance mechanism (24) on the dehydrating shaft (2) and reverse brake band (9,9b) and actuating arm (21);
It is characterized in that: two ends of described clutch spring (14) be connected respectively described ratchet (18a, 18b) on.
2. according to the described clutch of claim 1, it is characterized in that: described ratchet and pawl be two clicks of oppositely installing (18a, 18b, 19a, 19b).
3. according to the described clutch of claim 1, it is characterized in that: described reverse brake band is single brake band (9), and described forward dynamic resistance mechanism is check spring (24).
4. according to the described clutch of claim 1, it is characterized in that: described forward dynamic resistance mechanism and reverse brake band for the former also be brake band (9a) two brake bands (9a, 9b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02225272 CN2579926Y (en) | 2002-01-22 | 2002-01-22 | Washing machine clutch of screw knob spring clutch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02225272 CN2579926Y (en) | 2002-01-22 | 2002-01-22 | Washing machine clutch of screw knob spring clutch structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2579926Y true CN2579926Y (en) | 2003-10-15 |
Family
ID=33702512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02225272 Expired - Fee Related CN2579926Y (en) | 2002-01-22 | 2002-01-22 | Washing machine clutch of screw knob spring clutch structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2579926Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312367A (en) * | 2011-08-19 | 2012-01-11 | 刘富春 | Washing and dewatering clutch for pulsator washing machine |
| CN107022874A (en) * | 2016-02-01 | 2017-08-08 | 浙江三星机电股份有限公司 | A kind of washing machine clutch for clutch control method and speed-reducing clutch |
-
2002
- 2002-01-22 CN CN 02225272 patent/CN2579926Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102312367A (en) * | 2011-08-19 | 2012-01-11 | 刘富春 | Washing and dewatering clutch for pulsator washing machine |
| CN107022874A (en) * | 2016-02-01 | 2017-08-08 | 浙江三星机电股份有限公司 | A kind of washing machine clutch for clutch control method and speed-reducing clutch |
| CN107022874B (en) * | 2016-02-01 | 2023-04-07 | 浙江三星机电股份有限公司 | Clutch control method for washing machine and speed reduction clutch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |