CN100585052C - A vibration-damping support structure for an inclined-horizontal drum washing machine - Google Patents

Abstract

The invention discloses a vibration damping support structure of an inclined horizontal drum washing machine, which comprises a washing machine bottom plate, a vertical inclined vibration damper and a fixing piece of a washing device, wherein the central axis of the fixing piece is in an inclined horizontal state, and the vertical inclined vibration damper is supported between the fixing piece and the bottom plate; and a 3 rd vibration reduction support, namely a rear support piece, is arranged in the middle of the rear part of the fixing piece, the upper end of the rear support piece is connected with the fixing piece, and the lower end of the rear support piece is fixed on the bottom plate. The vibration-damping support structure adopts a 3-point support structure, and the structure has the strength required by supporting the vibration-damping support structure on one hand, and on the other hand, the 3-point support structure can bear a certain swing amplitude and has a good vibration-damping effect.

Description

A vibration-damping support structure for an inclined-horizontal drum washing machine

technical field

The invention relates to a support structure of a drum washing machine, in particular to a vibration-damping support structure of an oblique drum washing machine which is beneficial to eliminating resonance generated when the drum rotates at high speed.

Background technique

In the prior art, the drum of the roller washing machine is generally a horizontal structure, that is, the central axis of the rotating drum is located at the horizontal position, and the supporting mechanism is suspended on the frame above the drum, and a buffer is installed below the drum to connect with the bottom plate. The disadvantage of the structural method is that when the drum is loaded, if the load is unevenly distributed in the drum, it is easy to cause the drum to resonate during dehydration, resulting in obvious amplitude and vibration displacement of the washing machine.

In recent years, another type of inclined-horizontal drum washing machine has been developed, that is, the central axis of the rotating drum and the horizontal line form a horizontal inclination angle α, and α is an acute angle, which constitutes a structural form in which the front end of the drum is higher than the rear end, and its supporting mechanism has a drum suspension structure , there is also a lower support method. Chinese invention patent application 200610000552.8 "Drum Washing Machine" discloses an inclined drum washing machine (referring to Fig. 1 ) that adopts a drum suspension support mechanism. Its disadvantage is that the supporting mechanism is relatively complicated, and the overall strength requirement of the water tank 12 is relatively high, so the production cost is relatively high; The gravity of the drum can be decomposed into two components perpendicular to or parallel to the central axis of the drum. Therefore, when the drum 11 is in a dynamic state, especially in the dehydration state, it is inevitable to shake back and forth. The control strength of rocking back and forth is not ideal, which means that a larger gap needs to be reserved between the outer frame 1 of the washing machine and the water tank 12 to ensure that the parts will not collide during operation.

Another kind of oblique drum adopting the lower support method mentioned above, its support mechanism adopts several vertical oblique shock absorbers to support the drum on the bottom plate of the washing machine, Chinese invention patent 200420072886.2 "front-loading drum washing machine" What is disclosed is an oblique drum washing machine that adopts this type of support mechanism. Referring to Fig. 2, the washing machine consists of a casing 5, a drum 4, a vertical oblique front shock absorber 1 and a rear shock absorber 2, and a cylinder parallel to the central axis of the drum. Longitudinal shock absorber 3, several drum axial struts 8 and the fixed support formed by the rear seat 14 connected thereto etc., wherein, the setting of longitudinal shock absorber 3 is to control the front and rear movement of the drum, it is composed of two The rear propulsion bearing composed of low-friction plates, one of which is set at the rear of the fixed water tank or the fixed bracket, and the other is set at the corresponding position of the shell through a compression spring, under the action of the spring, the two low-friction plates are always Press together. However, after trial production, it was found that this technical solution still has shortcomings: in a certain speed range of the drum (such as about 600 rpm), the washing machine will generate a large resonance, resulting in increased noise and vibration displacement of the whole machine , Frequent resonance will also affect the service life of the washing machine.

Contents of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a vibration-damping support structure of an inclined-horizontal drum washing machine that can effectively reduce vibration and reduce manufacturing costs.

The technical scheme adopted by the present invention to solve the technical problem is: a vibration-damping support structure of an inclined-horizontal drum washing machine, which includes a washing machine bottom plate, a vertical oblique shock absorber and a fixing piece of a washing device, wherein the The central axis of the fixing part is oblique and horizontal, and the vertical oblique shock absorber is supported between the fixing part and the bottom plate. It is characterized in that the vibration-damping support structure is composed of 3 The shock absorbers adopt vertical oblique shock absorbers, their lower ends are fixed on the bottom plate, and their upper ends are set on the left and right sides of the front part of the fixing part: a third shock-absorbing support is set in the middle of the rear part of the fixing part, called It is a rear supporting part, the upper end of which is connected with the fixing part, and the lower end is fixed on the base plate.

The vibration-damping support structure of the present invention adopts a 3-point support structure, and the 3 vibration-damping supports are located on the three vertices of the triangle. It can withstand a certain swing range, has a good damping effect, and can eliminate the resonance phenomenon of the drum at a certain speed range.

The rear support member described in the present invention is a vibration-damping elastic structure, which includes an upper support block, a vibration-damping elastic block and a lower support block, wherein the vibration-damping elastic block is located in the middle of the upper and lower support blocks, and is connected with the upper and lower support blocks. Blocks are fixedly connected, wherein, the upper supporting block is connected with the rear portion of the roller fixing part, and the lower supporting block is the supporting foot of the rear supporting part, and its lower end is fixed on the base plate.

The present invention can be improved as follows: the rear supporting part is fixed on the bottom plate below the rear part of the fixing part, and its upper part has a connection structure adapted to the connection part of the rear part of the roller fixing part. The connection structure corresponding to the upper part of the rear support is provided with a support block, and the rear part of the fixing part is supported on the rear support through the support block.

The present invention can be further improved as follows: the rear support is composed of upper and lower parts, wherein the lower part is the elastic support foot of the rear support, made of elastic members, and connected with the bottom plate, the upper part of the rear support is The rigid support block, its lower end is fixedly connected with the elastic support foot, and the upper end has a connection structure adapted to the support block on the fixing piece.

The elastic support feet of the rear support in the present invention can use one or more combinations of damping rubber, damping springs or plate springs.

The connection structure of the supporting block on the rear supporting part of the present invention that is adapted to the supporting block on the fixing part of the washing device can be an arc-shaped groove, and the corresponding supporting block on the fixing part is a The arc-shaped bump protruding from the bottom is joined together; the grooves and bumps of the two can be exchanged.

The connecting structure adapted to the supporting block on the fixing part of the washing device at the upper end of the rear supporting part according to the present invention can also be a right-angled column whose end face is L-shaped, and the supporting block on the corresponding fixing part is rectangular The columnar body, the two are joined; the L-shaped right-angled column and columnar body of the two can also be exchanged.

The fixing part of the washing device according to the present invention may be a fixed bracket, or a fixed outer tub of the drum, and the drum is located in the fixed bracket or the fixed outer tub and arranged coaxially with it, and the rotating shaft driving the drum is positioned by the bearing On the rear end face of the fixed bracket or the fixed outer tub.

In the present invention, the lower surface of the bottom plate corresponds to the supporting feet of the rear support member, and a reinforcing support is provided for supporting the bottom plate. During the working process of the washing machine, the rear support member is subjected to a relatively large force, and the setting of the reinforced support can prevent the base at the supporting foot from being deformed due to the fact that the base at the supporting foot is always subjected to a large force.

The front shock absorber of the present invention is mainly composed of a hollow main body, a strut, a compression spring and a connecting end block, wherein the lower part of the strut is inserted into the main body and connected with the compression spring installed in the middle and lower part of the inner cavity of the main body, It constitutes an elastic supporting body, and the connecting end blocks are arranged at both ends of the elastic supporting body. The end block and the damping rubber block are set on the connecting shaft at the lower end of the main body, or the upper part of the pillar, and the shock absorbing rubber block is located between the lower end surface of the main body and the end block, or between the pillar positioning piece and the end block. Between them, the wear-resistant sheets are respectively fixed on the corresponding end faces of the end block and the rubber block.

Compared with the prior art, the beneficial effect of the present invention is: the present invention adopts 3-point vibration-damping support roller components, which not only simplifies the support structure, but also makes the manufacture and installation of the vibration-damping support structure easier and simpler, thereby facilitating Reduce the manufacturing cost of the washing machine; and because the longitudinal shock absorber in the prior art is removed, the resonance phenomenon of the washing machine at a certain speed range is avoided, thereby eliminating the noise caused by the resonance and solving the problem of the resonance on the service life of the washing machine. adverse effects.

Description of drawings

The present invention will be described in further detail below in conjunction with embodiment and accompanying drawing:

Fig. 1 is a front sectional view of an oblique drum washing machine adopting a drum suspension support mechanism in the prior art (the numbers in the figure follow the numbers in the original patent document, and only the corresponding content in the background technology is applicable);

Fig. 2 is a front cross-sectional view of an oblique drum washing machine adopting a support method under the drum in the prior art (the numbers in the figure follow the numbers in the original patent document, and only the corresponding content in the background technology is applicable);

Fig. 3 is a side sectional view of the first embodiment of the present invention;

Fig. 4 is the rear view sectional view of the 1st embodiment of the present invention;

Fig. 5 is the structural front sectional view of the front shock absorber in the 1st embodiment of the present invention;

Figure 6 is a rear view sectional view of the second embodiment of the present invention;

Figure 7 is a partial enlarged view of Figure 6;

Fig. 8 is the rear view sectional view of the 3rd embodiment of the present invention;

Fig. 9 is a partial enlarged view of Fig. 8;

Fig. 10 is the rear view sectional view of the 4th embodiment of the present invention;

Figure 11 is a partial enlarged view of Figure 10;

Fig. 12 is the rear view sectional view of the 5th embodiment of the present invention;

Figure 13 is a partial enlarged view of Figure 12;

Fig. 14 is the rear view sectional view of the 6th embodiment of the present invention;

Figure 15 is a partial enlarged view of Figure 14;

Fig. 16 is a rear view sectional view of the seventh embodiment of the present invention;

Figure 17 is a partial enlarged view of Figure 14;

The parts and components in all the embodiments in the figures of the present invention are labeled uniformly, and are not related to the components with the same labels in the background art.

Detailed ways

Embodiment one

The damping support structure of a kind of oblique drum washing machine as shown in Figure 3～5 is the first embodiment of the present invention, and the washing device of washing machine is installed in the washing machine casing 1, and this damping support structure is formed by washing machine bottom plate 5.3 The shock-absorbing support is composed of the fixing part 2 of the washing device, wherein the fixing part 2 of the washing device is to fix the outer barrel, its central axis is oblique and horizontal, and two of the three shock-absorbing supports are front shock-absorbing Device 4 adopts vertical oblique shock absorbers, their lower ends are respectively fixed on the left and right sides of the front part of the bottom plate, and their upper ends are respectively connected to the left and right sides of the front part of the fixed outer barrel 2; the third vibration damping support supports In the middle of the rear part of the fixed outer barrel 2, it is called the rear support 3, the upper end of the rear support 3 is connected with the fixed outer barrel 2, and the lower end is fixed on the bottom plate 5. On a vertex, wherein the support foot of the rear support 3 is located on the center line of the line connecting the other two support feet, the rear support 3 is vertically fixed on the bottom plate 5.

As shown in Fig. 3 and Fig. 4, the rear support member 3 in the present invention is a damping elastic structure, which is a cylindrical structure as a whole, and it includes an upper supporting block 31, a damping elastic block 32 and a lower supporting block 33, wherein the damping elastic The vibration elastic block 32 is made of damping rubber, it is located in the middle of the upper and lower support blocks 31,33, and is fixedly connected with the upper and lower support blocks 31,33, wherein the upper support block 31 is connected to the rear of the fixed outer barrel 2 The support blocks arranged correspondingly at the bottom are connected in plane, and the lower support block 33 is the support foot of the rear support member 3, which is fixed on the bottom plate 5. The damping elastic block 32 can also be made of other elastic materials.

The drum in this embodiment is located in the fixed outer tub 2 and arranged coaxially therewith, and the rotating shaft driving the drum is positioned on the rear end surface of the fixed outer tub 2 through bearings.

The lower surface of the bottom plate 5 of the present invention is also provided with a reinforcement support 6 at a position corresponding to the rear support 3 , and the outer edge size of the reinforcement support 6 is preferably larger than the outer edge size of the rear support 3 .

As shown in Figure 5, the front shock absorber of this embodiment is mainly composed of a hollow main body part 41, a strut 42, a compression spring 43 and a connecting end block 44, wherein the lower part of the strut 42 is inserted into the upper part of the main body part 41 and installed in the The compression spring 43 in the middle and lower part of the inner chamber of the main body part 41 is connected to form an elastic supporting body, and the connecting end blocks 44 are arranged at the two ends of the elastic supporting body, which are the fixed outer tub 2 and the base 5 of the front shock absorber and the washing device. The flexible connection structure of the connection is composed of an end block, a vibration-damping rubber block and a wear-resistant sheet, wherein the end block and the vibration-damping rubber block are sleeved on the connecting shaft at the lower end of the main body 41, or the upper part of the pillar 42, and the vibration-damping rubber The block is located between the lower end surface of the main body part 41 and the end block, or between the positioning part of the pillar 42 and the end block, and the wear-resistant sheet is respectively fixed on the corresponding end surfaces of the end block and the rubber block.

Embodiment two

The vibration-damping support structure of an inclined drum washing machine shown in Fig. 6 and Fig. 7 is the second embodiment of the present invention. The difference from the first embodiment is that the rear support 3 is composed of upper and lower parts , wherein the lower part is the elastic supporting foot of the rear support 3, which is made of shock-absorbing rubber. It has a connection structure adapted to the rear of the fixed outer tub 2, the rear of the fixed outer tub 2 is provided with a support block 21 corresponding to the rear support 3, and the rear of the fixed outer tub 2 is supported on the rear support 3 by the support block 21, Correspondingly, the upper support block of the rear support member 3 has a connection structure adapted to the support block on the fixed outer tub 2, and the upper support block of the rear support member 3 is a protruding semicircular bump. The corresponding support block 21 on the fixed outer barrel 2 is a semicircular groove opening downwards, and the two are engaged with each other.

Embodiment Three

The vibration-damping support structure of an inclined drum washing machine shown in Fig. 8 and Fig. 9 is the third embodiment of the present invention. The difference from the second embodiment is that the rear support 3 and the fixed outer tub in this embodiment The connection structure of the support block 21 of the tub 2 is a semicircular groove, and the corresponding support block 21 on the fixed outer barrel 2 is a semicircular protrusion protruding downward, and the two are mutually engaged.

Embodiment Four

The damping support structure of a kind of oblique drum washing machine shown in Fig. 10 and Fig. 11 is the fourth embodiment of the present invention. The difference from the second embodiment is that the elastic support of the rear support member 3 in this embodiment is formed by Damping spring 7 is made, and this damping spring 7 is two, and is symmetrically arranged below the upper supporting block.

Embodiment five

Figure 12 and Figure 13 show a vibration-damping support structure for an inclined drum washing machine, which is the fifth embodiment of the present invention. The difference from the above-mentioned embodiment is that the rear support 3 is a single piece, which is Spring plate 8, which is fixed on the bottom plate 5, and the support block 21 on the fixed outer barrel 2 has an arched top that is compatible with the rear support 3, and the rear support 3 is a protruding semicircular bump, corresponding to it The support block 21 on the fixed outer tub 2 is a downward semicircular groove, and the two cooperate with each other.

Embodiment six

The vibration-damping support structure of an inclined drum washing machine shown in Fig. 14 and Fig. 15 is the sixth embodiment of the present invention. The difference from Embodiment 2 is that the connection structure of the support block on the rear support 3 in this embodiment and the support block 21 on the fixed outer tub 2 is a rectangular columnar body, and the corresponding fixing member The supporting block 21 on the 2 is a right-angled column whose end face is "L" shape, and the right-angled parts where the two are in contact all adopt circular arc transitions. The L-shaped right-angled column opens inward.

Embodiment seven

The vibration-absorbing support structure of an inclined drum washing machine shown in Fig. 16 and Fig. 17 is the seventh embodiment of the present invention. The difference from Embodiment 6 is that the connection structure of the support block on the rear support 3 in this embodiment that is compatible with the support block 21 on the fixed outer tub 2 is an L-shaped right-angle column, and the corresponding fixed The support block 21 on the part 2 is a rectangular column, and the two are connected.

Claims (8)

1. A damping support structure of an inclined-horizontal drum washing machine, which comprises a washing machine base plate, a vertical oblique shock absorber and a fixing piece of a washing device, wherein the central axis of the fixing piece is an oblique-horizontal type, vertical The oblique shock absorber is supported between the fixing part and the bottom plate, and it is characterized in that: the shock absorbing support structure is composed of three shock absorbers, and the two front shock absorbers adopt vertical oblique shock absorbers. Shockers, their lower ends are fixed on the bottom plate, and their upper ends are arranged on the left and right sides of the front part of the fixing part; a third damping support is arranged in the middle of the rear part of the fixing part, which is called a rear support part, and the rear support part The part is a vibration-damping elastic structure, which includes an upper support block, a vibration-damping elastic block and a lower support block, wherein the vibration-damping elastic block is located in the middle of the upper and lower support blocks, and is fixedly connected with the upper and lower support blocks, wherein the upper support The block is connected with the rear portion of the fixture, and the lower support block is the supporting foot of the rear support, and its lower end is fixed on the base plate. 2. A damping support structure for an inclined-horizontal drum washing machine, which comprises a washing machine bottom plate, a vertical oblique shock absorber and a fixing piece of a washing device, wherein the central axis of the fixing piece is inclined horizontally, vertical The oblique shock absorber is supported between the fixing part and the bottom plate, and it is characterized in that: the shock absorbing support structure is composed of three shock absorbers, and the two front shock absorbers adopt vertical oblique shock absorbers. Shockers, their lower ends are fixed on the bottom plate, and their upper ends are arranged on the left and right sides of the front part of the fixing part; a third damping support is arranged in the middle of the rear part of the fixing part, which is called a rear support part, and the rear support part The part is fixed on the base plate below the rear part of the fixing part. The rear support part is composed of upper and lower parts, wherein the lower part is the elastic support foot of the rear support part, which is made of an elastic member and connected with the base plate. The upper part of the support is a rigid support block, the lower end of which is fixedly connected with the elastic support feet, and the upper end has a connection structure adapted to the support block on the fixed part. Correspondingly, the connection at the rear of the fixed part corresponds to the connection structure of the upper part of the rear support A support block is provided, and the rear part of the fixing part is supported on the rear support part through the support block. 3. The vibration-damping support structure of an inclined-horizontal drum washing machine according to claim 2, characterized in that: the elastic support feet are made of one or more of vibration-damping rubber or plate springs combination. 4. The vibration-damping support structure of an oblique drum washing machine according to claim 2, characterized in that: the support block on the upper part of the rear support member is in the same position as the support block on the fixing member of the washing device. The adaptable connection structure is an arc-shaped groove, and the corresponding support block on the fixing piece is an arc-shaped protrusion protruding downward, and the two are engaged; or the support on the upper part of the rear support The connecting structure that the block has and the supporting block on the fixing part of the washing device is an arc-shaped protrusion, and the corresponding supporting block on the fixing part is a circular-arc groove protruding downwards. The two join together. 5. The vibration-damping support structure of an inclined drum washing machine according to claim 2, characterized in that: the upper end of the rear support member has a connection that is adapted to the support block on the fixing member of the washing device The structure is a right-angled column with an L-shaped end face, and the supporting block on the corresponding fixing piece is a rectangular columnar body, and the two are connected; or the upper end of the rear supporting piece is connected to the fixing piece of the washing device. The connection structure suitable for the support block is a columnar body with a rectangular end face, and the support block on the corresponding fixing piece is an L-shaped right-angle column, and the two are connected. 6. The vibration-damping support structure of an inclined-horizontal drum washing machine according to any one of claims 1 to 5, characterized in that: the fixing part of the washing device is a fixed outer tub, and the drum is located in the fixed outer tub Inside and coaxially arranged with it, the rotating shaft that drives the drum to rotate is positioned on the rear end face of the fixed outer barrel through the bearing. 7. The vibration-damping support structure of an inclined-horizontal drum washing machine according to any one of claims 1 to 5, characterized in that: the lower surface of the bottom plate corresponds to the supporting foot of the rear support member There are also reinforced supports. 8. The vibration-damping support structure of an inclined drum washing machine according to claim 7, wherein the front shock absorber comprises a hollow main body, a strut, a compression spring and a connecting end block, wherein the lower part of the strut It is inserted into the main body and connected with the compression spring installed in the middle and lower part of the inner cavity of the main body to form an elastic support body. The flexible connection structure connecting the fixing part and the base is composed of an end block, a vibration-damping rubber block and a wear-resistant sheet. Between the lower end surface of the part and the end block, the wear plate is fixed on the end surface corresponding to the end block and the rubber block.

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