CN1396332A - Washing machine - Google Patents

Abstract

A washing machine with an intermeshing clutch mechanism that uses a control drive such as a geared motor or an electromagnetic coil as a transmission source eliminates the overload of the control drive due to poor meshing and realizes safe switching and transmission operations with a simple structure , Reliable clutch mechanism with high reliability. The washing machine includes: a sliding member that transmits the rotation of the driving motor to any one of the dehydration shaft and the washing shaft by sliding up and down, a clutch lever that slides the sliding member up and down, and a control drive device that manipulates the clutch lever. The clutch lever and the control drive are connected by an intermediary member with a spring structure. As a result, even if the sliding member does not move to the specified stroke, the control drive will not be overloaded due to the elongation of the spring structure. Thus, the control drive is not damaged.

Description

washing machine

technical field

The present invention relates to a washing machine for washing, rinsing, and dehydrating clothes.

Background technique

FIG. 7 illustrates the structure of a conventional washing machine. In the washing machine main body (frame) 1, a water tank 3 suspended by a suspension rod 2 is installed inside it to prevent dehydration vibration. In the water tank 3, a washing and dehydrating tank 4 is rotatably installed, and at the inner bottom of the washing and dehydrating tank 4, a pulsator 5 for agitating the laundry is rotatably installed. The dehydration shaft 7 is supported by the bearing 6 installed at the bottom of the water tank 3 . The installation of the washing and dehydration tank 4 is substantially coaxial with the dehydration shaft 7 and is fixed on the upper end of the dehydration shaft 7 . The pulsator 5 is installed in the hollow of the dehydration shaft 7 and is substantially coaxial with the dehydration shaft 7 , and is fixed on the upper end of the washing shaft 9 supported by the hollow bearing 8 of the dehydration shaft 7 . In addition, the lower end portion of the washing shaft 9 is connected to the output end of the reduction mechanism 10 . The lower end of the input shaft 13 is connected to the rotor 12 of the drive motor 11 , and the upper end of the input shaft 13 is connected to the input end of the reduction mechanism 10 .

Next, the structure of the clutch which transmits the rotation switching of the drive motor 11 to either the spin-drying shaft 7 or the input shaft 13 is demonstrated. On the lower part of the dehydration shaft 7, a slide member 14 having a feather key shape on its periphery is installed. On the sliding member 14, the sliding member 15 whose inner surface shape corresponds to the shape of the feather key is installed. When the rotation of the driving motor 11 was transmitted to the dehydration shaft 7, that is, when the washing and dehydration tank 4 rotated, the compression spring 16 pressed down the sliding member 15, so that the lower protrusion 15a provided on the lower part of the sliding member 15 and the lower protrusion 15a provided on the rotor 12 were connected. The rotor protrusions 12 a cooperate to transmit the rotation of the rotor 12 to the dehydration shaft 7 . In addition, when the rotation of the driving motor 11 is transmitted to the input shaft 13, that is, when the pulsator 5 rotates, it moves upwards in phase with the sliding member 15 through the control drive device 17 of the gear transmission motor (booster) or electromagnetic (coil). Cooperating with the clutch lever 18, the slide member 15 is moved upwards. Therefore, the lower protrusion 15 a of the slide member 15 is separated from the rotor protrusion 12 a of the rotor 12 , and the rotation of the rotor 12 is not transmitted to the dehydration shaft 7 but is transmitted only to the input shaft 13 . The rotation transmitted to the input shaft 13 is transmitted to the pulsator 5 via the speed reduction mechanism 10 and the washing shaft 9, and the pulsator 5 is rotated. The upper protrusion 15b on the top of the slide member 15 cooperates with the fixed side protrusion 19a provided on the housing portion 19 of the drive motor 11 to fix the washing and dehydration tank 4 to prevent the washing from being caused by the water flow when the pulsator 5 rotates. And the common rotation of the dehydration tank 4.

When the pulsator 5 rotates, even if the sliding member 15 moves upward, the upper protrusion 15b provided on the upper portion of the sliding member 15 and the fixed side protrusion 19a provided on the drive motor housing member 19 will not cooperate properly, and A phenomenon in which the front end surface of the upper protrusion 15b and the front end surface of the fixed side protrusion 19a overlap each other. At this time, within the predetermined stroke, because the slide member 15 cannot move, the control drive unit 17 is locked halfway, and the control drive unit 17 is overloaded, and the control drive unit 17 may be damaged.

Contents of the invention

In view of the foregoing, the object of the present invention is to provide a washing machine with a clutch mechanism, that is, a clutch structure that has a control drive such as a geared motor or an electromagnetic coil as a transmission source for intermeshing clutches to eliminate the control drive caused by poor meshing. It is a washing machine with a clutch mechanism that is safe, reliable, and reliable in operation, and realizes cutting and transmission with a simple structure.

The washing machine of the present invention includes: a washing and dehydrating tank, a pulsator installed in the above washing and dehydrating tank, a hollow dehydrating shaft for rotating the above washing and dehydrating tank, and a hollow dehydrating shaft that is substantially coaxial with the dehydrating shaft and rotates the pulsator. The washing shaft of the wheel, the drive motor that rotates the above-mentioned dehydration shaft and the above-mentioned washing shaft, through the sliding along the direction of the rotation axis of the above-mentioned dehydration shaft, the rotation switching of the above-mentioned drive motor is transmitted to any one of the above-mentioned dehydration shaft or the above-mentioned washing shaft. a sliding member, a clutch lever for sliding the sliding member in the direction of the rotation axis of the dehydration shaft, a control drive device for driving the clutch lever, a medium that connects the clutch lever and the control drive device and has an elastic member parts etc.

In this washing machine, when the rotation of the drive motor is switched from the dehydration shaft to the washing shaft, even if the sliding part does not slide normally and gets caught halfway, the elastic part provided on the media part can absorb and control the driving device and the clutch lever. difference in motion. Therefore, it is possible to realize a clutch mechanism with high reliability in which switching transmission operation is safe and reliable with a simple structure.

Description of drawings

Fig. 1 is a sectional view of a washing machine according to Embodiment 1 of the present invention.

Fig. 2 is a sectional view of main parts of the washing machine of the first embodiment.

Fig. 3 is a sectional view of main parts of the washing machine of the first embodiment.

Fig. 4 is a sectional view of main parts of the washing machine of the first embodiment.

Fig. 5 is a front view of a media member according to Embodiment 2 of the present invention.

FIG. 6 is a front view of the vicinity of a media member in Embodiment 2. FIG.

Fig. 7 is a sectional view of a conventional washing machine.

The specific embodiment (embodiment 1)

FIG. 1 shows the overall structure of a washing machine according to Embodiment 1. Referring to FIG. 2 to 4 show the driving part of the washing machine according to Embodiment 1. Referring to FIG.

In FIG. 1 , the main body 20 of the washing machine has a water tank 22 suspended from a suspension rod 21 inside it to prevent vibration during dehydration. In the water tank 22, a rotatable washing and dewatering tank 23 as a laundry container is installed, and at the inner bottom of the washing and dehydrating tank 23, a rotatable pulsator 24 for agitating the laundry is installed. A driving part 25 is provided at the bottom of the water tank 22 .

In Fig. 1 and Fig. 2, the driving part 25 has a hollow dehydration shaft 26, and the dehydration shaft 26 is supported by a dehydration upper bearing 27 installed on the upper central part of the driving part 25 and a dehydration lower bearing 28 installed near the central part . One side of the upper end of the dehydration shaft 26 is fixed on the bottom of the washing and dehydrating tank 23 , and is connected with the washing and dehydrating tank 23 . On the top side hollow portion 26a of the dehydration shaft 26, the washing shaft 29 substantially coaxial with the dehydration shaft 26 is installed, and it is supported by the washing bearing 30 installed on the top side hollow portion 26a of the dehydration shaft 26. One side of the upper end of the washing shaft 29 is fixed on the bottom of the pulsator 24 and links to each other with the pulsator 24 . The lower end side of the washing shaft 29 is connected to the output end of the deceleration mechanism 31 , and the output end of the deceleration mechanism 31 is arranged at the middle hollow portion 26 b inside the dehydration shaft 26 .

The input end of the reduction mechanism 31 is connected to the upper end of the input shaft 32 , and the input shaft 32 is supported by the input bearing 33 installed in the lower hollow portion 26 c of the dehydration shaft 26 .

The dehydration shaft 26, the dehydration upper bearing 27 and the dehydration lower bearing 28 including the washing shaft 29, the input shaft 32 and the speed reduction mechanism 31, etc. are built in the housing 34, and the housing 34 is fixed on the bottom of the water tank 22.

The rotor 35a of the drive motor 35 of the spin-drying shaft 27 and the input shaft 32 is connected to the lower part of the input shaft 32 . A stator 35c is provided inside the driving motor 35 so as to face a magnet 35b provided on the periphery of the rotor 35a.

On the lower portion of the dehydration shaft 27, a sliding member 36 whose periphery is in the shape of a feather key is attached. The slide member 36 is slidably mounted with a slide member 37 whose inner surface shape corresponds to the shape of the feather key. Sliding part 37 is pressed down by compression spring 38, and the lower protrusion 37a that is located at the bottom of sliding part 37 cooperates with the opening 35d that is located at rotor 35a, and the rotation of rotor 35a is transmitted to dehydration shaft 27. Also, when the power of the washing machine is turned off, it will remain in this state.

At the bottom of the water tank 22, a control drive device 39 such as a geared motor (booster) or an electromagnetic is installed.

One end of the intermediary member 41 , one end of which is connected to the clutch lever connection portion 40 a of the clutch lever 40 , is connected to the drive unit connection portion 39 a of the control drive unit 39 .

One end of the clutch lever 40 has a U-shaped slide support member 40b supported from below the slide member 37, and the other end has the above-mentioned clutch lever connection portion 40a, and the support member 42 supporting the drive motor 35 stator 35c On the hole portion 43b of the fixing side fitting member 43, there is a shaft (pin) portion 40c rotatably supported.

When the rotation of the drive motor 35 is transmitted to the input shaft 32, the drive unit connecting portion 39a of the control drive unit 39 rotates, and the clutch lever 40 moves from the position shown in FIG. 2 to the position shown in FIG. Accordingly, the clutch lever 40 rotates clockwise around the shaft portion 40c via the intermediary member 41 . Due to this rotation, the support portion 40b of the slide member moves upward, against the downward elastic force of the compression spring 38, and lifts the slide member 37 upward. Thus, as shown in Figure 3, the lower protrusion 37a provided at the bottom of the slide member 37 is disengaged from the engagement of the opening 35d provided at the rotor 35a, so that the rotation of the rotor 35a is not transmitted to the dehydration shaft 27, but only to the input shaft 32. At the same time, the upper protrusion 37b on the top of the sliding part 37 cooperates with the fixed side protrusion 43a on the fixed side matching part 43 to fix the dehydration shaft and prevent the common rotation of the washing and dehydration tank 23 .

In addition, the clutch lever connecting portion 40a protrudes outwards from the drive motor 35. As shown in Figure 2, when the clutch lever 40 rotates counterclockwise, it will touch the side wall of the housing 34 and rotate at this position. Restricted.

The media member 41 is composed of a wire (spring steel wire, piano wire, etc.), and has a spring structure 41a as an elastic member near the end of the clutch lever 40 on the clutch lever connecting portion 40a side. The two ends of the media member 41 respectively form a hook portion 41b on one side of the clutch lever that is matched with the clutch lever connecting protrusion 40d provided on the clutch lever connecting portion 40a, and a hook portion 41b on the clutch lever connecting portion 39a that is arranged on the driving device connecting portion 40a. The driving device connecting protruding part 39b matches the driving device connecting side hook part 41c.

When the dehydration shaft 26 is in a rotatable state, the length of the intermediary member 41 is longer than the distance between the clutch lever connecting portion 40d and the driving device connecting boss 39b, and has a free length.

Describe the operation of this washing machine.

First, when the washing and rinsing strokes are carried out due to the rotation of the pulsator 24, that is, when the rotation of the driving motor 35 is transmitted to the input shaft 32, the driving device connection part 39a of the control driving device 39 rotates, and moves from the position in FIG. 2 to the position in FIG. s position. Accordingly, the clutch lever 40 rotates clockwise around the shaft pin 40c via the intermediary member 41 . Due to this rotation, the slider support portion 40b moves upward, against the downward elastic force of the compression spring 38, and lifts the slider 37 upward. Thereby, as shown in Figure 3, the lower protrusion 37a that is located at the bottom of the sliding member 37 is disengaged from the engagement that is located at the opening 35d of the rotor 35a, and the rotation of the rotor 35a is not transmitted to the dehydration shaft 27, but only to the dehydration shaft 27. To the input shaft 32, the pulsator 24 is rotated. Simultaneously, be located at the upper protrusion 37b of slide member 37 tops and be located at the fixed one side protrusion 43a of fixed side mating member 43 cooperate, to prevent washing and dehydration tank 23 from co-rotating.

At this time, if the upper protrusion 37b provided on the upper portion of the sliding member 37 cooperates with the fixed side protrusion 43a provided on the fixed side fitting member 43, as shown in FIG. 3, due to their mutual engagement, the The dehydration shaft 27 is fixed. As shown in FIG. 4, if they are not engaged with each other, there will be a state where the fixed side protrusion 43a rides on the upper protrusion 37b. Thus, the rotation of the clutch operating lever 40 is not very sufficient, but by the extension of the spring structure part 41a of the intermediary member 41, the insufficient rotation of the clutch operating lever 40 can be absorbed, so the driving device connection part 39a of the control driving device 39 , will not be damaged due to its unrestricted rotation itself.

Then, due to the rotation of the rotor 35 a, the pulsator 24 is rotated through the input shaft 32 , the reduction mechanism 31 and the washing shaft 29 . Thus, the washing and rinsing strokes are carried out, but in the initial state, even if it is the state where the above-mentioned upper protrusion 37b and the fixed side protrusion 43a are not engaged and are caught, due to the water flow when the pulsator rotates Co-rotation of the washing and dehydrating tank 23 is caused to rotate the dehydrating shaft 26 . Therefore, the sliding member 37 rotating together with this (dehydrating shaft) will reach the position (relationship) meshed with the fixed side fitting member 43, thereby, the elastic force and the clutch operation of the spring structure part 41a of the intermediary member 41 The lever 40 moves the slide member 37 upward, and the upper protrusion 37b engages with the fixed side protrusion 43a. In this way, the dehydration shaft 26 is fixed, and the washing and dehydration tank 23 no longer rotate together in the future, and the washing and rinsing strokes are implemented.

After finishing the washing and rinsing process, it enters the dehydration process. In the dehydration stroke, when the water in the washing and dehydrating tank 23 is discharged, the driving device connection part 39a of the control driving device 39 is turned to the position shown in Figure 2, and the clutch lever 40 is turned counterclockwise by the intermediary member 41. direction turn. Thus, the sliding part 37 supported from the bottom by the support part 40b of the sliding part moves downward by its own weight and the downward elastic force of the compression spring 38, so that the lower protrusion 37a provided on the lower part of the sliding part 37 and the lower protrusion 37a provided on the rotor The opening 35d of 35a is engaged. When the clutch lever 40 is further turned counterclockwise, the support portion 40b of the sliding member is separated from the sliding member 37 . The rotation of the clutch lever 40 is stopped by the contact of the clutch lever connecting portion 40 a with the side wall of the housing 36 . At this time, when the dehydration shaft 26 is in a state where rotation is possible, because the media member 41 has a free length longer than the distance between the protrusion 40d connected to the clutch lever and the protrusion 39b connected to the driving device, the drive is controlled. The device 39 compresses the spring structure part 41a of the media member 41 and stops at a predetermined stop position.

Then, the washing and dehydrating tank 23 fixed to the dehydrating shaft 26 is rotated by the sliding member 37 due to the rotation of the rotor 35a. Initially, even though the lower protrusion 37a of the slide member 37 is not engaged with the opening 35d of the rotor 35a, they reach the engaged position (relationship) due to the rotation of the rotor 35a when the drive motor 35 is activated. Thereby, rely on self-weight and the downward elastic force of compression spring 38, slide member 37 moves to the position of mutual engagement, and lower projection 37a and opening portion 35d reliably engage, and the washing and dehydration tank 23 of rotating.

With the help of the centrifugal force generated by the rotation of the washing and dehydrating tank 24, the moisture of the laundry that has been washed and rinsed is thrown out (twist out) from a plurality of holes (not shown) that are arranged on the side of the washing and dehydrating tank 24. out) water tank 22, and the washings are automatically dehydrated. At this time, dehydration vibration accompanied by unbalance may occur in water tank 22 due to unevenness of the laundry or the like. Even then, the intermediary member 41 is compressed and controlled between the clutch lever connecting portion 40a and the control driving device 39, further pushing the clutch lever connecting portion 40a to the side wall of the housing 36, suppressing its shaking (shaking), Therefore, occurrence of breakage of the clutch lever 40 and the media member 41 or abnormal sound due to a vibration phenomenon or the like is avoided. The media member 41 has a spring structure portion 41 a as an elastic member in the vicinity of the end portion of the clutch lever 40 on the clutch lever connecting portion 40 a side. Therefore, the media member 41 can forcefully support and fix the clutch lever connecting portion 40a on the entire end surface of the spring structure portion 41a, so that the clutch lever 40 can be stabilized by suppressing shaking (vibration), vibration, and the like.

In addition, in Embodiment 1, the cycle of washing and rinsing in the rotary washing and dehydrating tank is not described, but the cycle can be realized by the same clutch operation as in the dehydration of Embodiment 1. Also, in Embodiment 1, although the washing machine having the deceleration mechanism has been described, it does not matter if the rotation of the motor is directly transmitted to the washing shaft without the deceleration mechanism.

In addition, according to Embodiment 1, the media member is constituted by a single metal wire (wire material), and the elastic portion is a structure of a spring. Therefore, it is possible to realize a safe and reliable switching operation at a low cost with a very simple structure. clutch mechanism.

(Example 2)

In Fig. 5 and Fig. 6, the intermediary member 41 is made up of a metal wire (wire) (spring steel wire, piano wire, etc.), and near the end of the clutch lever 40 on the clutch lever connection part 40a side, there is a The spring structure portion 41a of the elastic member. The two ends of the media member 41 are respectively formed with a clutch lever side hook 41b that fits with the clutch lever connection protrusion 40d provided at the clutch lever connection portion 40a and is connected with the drive mechanism at the drive mechanism connection portion 39a. The driving device matched with the protrusion 39b is connected to the hook 41c on one side. The hook 41c on the driving device connection side is rolled into a (substantially) annular linear shape, and the angle between the curled end surface 41d and the straight portion 41e forms a predetermined angle (for example, 0°<A<90°). Other structures are the same as the washing machine of Embodiment 1.

The operation of such a washing machine will be described.

Pinching the curling terminal 41d of the medium part 41 to the arrow X direction, the inner diameter of the hook (shaped part) 41c on one side of the driving device can be connected to be larger than the outer diameter of the driving device connecting boss 39b, so that it is easy to untie the driving device. The device connection side hook (shaped part) 41c and the cooperation between the drive device connection protrusion 39b. Thus, it is easy to untie the combination of the intermediary part 41 and the control driving device 39, so the driving part 25 and the control driving device 39 including the clutch lever 40 are separated, and the driving part 25 including the clutch lever 40 and the control device can be connected during assembly. The drive unit 39 is respectively installed in the washing machine, and in the event of failure, various parts can be easily exchanged.

Therefore, the operability at the time of product assembly can be improved, and also the operability at the time of parts replacement at the time of after-sales service can be improved.

Also, in Embodiment 2, the hook (shaped part) with the crimping terminal 41d is located on one side of the control drive device 39 of the media part 41, but is located on one side of the clutch lever 40, or is located on both sides. The same effect can be obtained on the side.

Claims (5)

1. washing machine, comprise: the washing and dewatering groove, the impeller of in above-mentioned washing and dewatering groove, installing, rotate the dehydrating shaft of the hollow of above-mentioned washing and dewatering groove, the wash shaft of installing and rotating above-mentioned impeller on coaxial substantially with above-mentioned dehydrating shaft, rotate the drive motors of above-mentioned dehydrating shaft and above-mentioned wash shaft, according to the slip on the rotating shaft direction of above-mentioned dehydrating shaft, the rotation of above-mentioned drive motors switched any one the slide unit pass to above-mentioned dehydrating shaft and above-mentioned wash shaft, the clutch operating lever that above-mentioned slide unit is slided on the above-mentioned rotating shaft direction of above-mentioned dehydrating shaft, drive the accessory drive of above-mentioned clutch operating lever, the media parts that connect above-mentioned clutch operating lever and accessory drive and flexible portion.

2. washing machine according to claim 1 is characterized in that: above-mentioned media parts are to be made of a wires material, and above-mentioned elastic portion has spring structure.

3. according to claim 1 and 2 described washing machines, it is characterized in that: when the rotation of above-mentioned drive motors passed to above-mentioned dehydrating shaft, the length of above-mentioned media parts was shorter than the drift of above-mentioned media parts.

4. washing machine according to claim 3 is characterized in that: above-mentioned elastic portion is arranged near the end of a side of above-mentioned clutch operating lever of above-mentioned media parts.

5. according to claim 1 and 2 described washing machines, it is characterized in that: above-mentioned clutch operating lever has first lug boss, and above-mentioned clutch operating lever has second lug boss; Above-mentioned media parts have metal wire rod in its two end portions, and first and second auxiliary sections of matching with first and second lug bosses are set respectively in above-mentioned two end portions; Above-mentioned first and second matching parts have at least one to be to have the shape of annulus substantially, and the leading section of above-mentioned metal wire rod is operated, and make the internal diameter of the above-mentioned cardinal principle toroidal in above-mentioned first and second auxiliary sections become big.

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