Kneading type drum washing machine

Abstract

The utility model discloses a kneading type drum washing machine, comprising a water tub and a washing tub arranged in the inner cavity of the water tub, a hollow shaft is fixedly connected at the middle position of the left side of the washing tub, and the left end of the hollow shaft extends to the left side of the water tub. When the utility model is in use, the reverse kneading wheel is arranged to effectively change the movement trajectory of the washed material in the drum, eliminate the inherent blind spot of washing in the traditional drum washing machine, so that the washing effect is significantly improved, because the kneading wheel is perpendicular to the drum axis, in the process of reverse rotation to implement scrubbing, the friction force generated by the gravity of the material and the surface of the convex ridge is avoided, so that the friction between the material and the convex ridge of the kneading wheel is greatly reduced, so that the mechanical wear of the washed material can be effectively avoided, while improving the washing effect, the advantage of the drum type washing machine of low wear on the material can be maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of drum washing machines, in particular to a kneading type drum washing machine. Background Art

[0002] At present, washing machines on the market are mainly divided into pulsator washing machines and drum washing machines. Among them: pulsator washing machines have the defects of easy tangling and deformation of clothes, high wear of clothes, and high water consumption during the washing process; drum washing machines have overcome the shortcomings of the former to a certain extent, but the washing effect is inferior to that of pulsator washing machines.

[0003] The drum washing machine relies on the centrifugal force generated by the forward and reverse rotation of the washing drum to collide the washed materials with multiple ridges provided on the inner wall of the washing drum to achieve washing by imitating manual hammering. Under this working mode, the effective washing area is the circumferential part where the clothes are in contact with the inner wall of the washing drum, while there are a large number of blind spots for the washed materials to collide and hammer in other spaces in the drum, which is particularly obvious when there are a lot of washed materials, thus affecting the washing effect. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the utility model aims to provide a kneading drum washing machine by driving the kneading wheel of the washing tub through a reverse rotating device.

[0005] One of the purposes of the utility model is achieved by the following technical solution:

[0006] A kneading drum washing machine comprises a water tub and a washing tub arranged in the inner cavity of the water tub, a hollow shaft is fixedly connected at the middle position on the left side of the washing tub, and the left end of the hollow shaft extends to the left side of the water tub and is sleeved and fixed with a rotating wheel, a first gear is sleeved and fixed on the hollow shaft, and a clutch gear is engaged at the bottom of the first gear, an automatic clutch is arranged at the bottom of the clutch gear, a bracket is installed on the rear side of the water tub, and a gear box is installed on the left side of the bracket, the automatic clutch is arranged in the inner cavity of the gear box, a spindle is rotatably connected to the inner cavity of the hollow shaft, and a kneading wheel is fixedly connected to the right end of the spindle, a spindle gear is sleeved and fixed near the left end of the spindle, and a second gear is engaged at the bottom of the spindle gear, a third gear is arranged on the right side of the second gear, and a fourth gear is engaged at the bottom of the third gear, and the hollow shaft, the first gear, the clutch gear, the spindle, the spindle gear, the fourth gear, the third gear, and the second gear constitute a reversing device.

[0007] Furthermore, the reverse device is composed of three groups of small-module gears and corresponding gear shafts, wherein the first gear is fixed on the hollow shaft and is the main driving gear for driving the spindle to rotate in reverse. It shares kinetic energy with the roller and rotates simultaneously. The spindle gear is fixed at the left end of the spindle, and the second gear on the reverse rotating device drives the spindle gear to drive the rubbing wheel at the right end of the spindle.

[0008] Furthermore, a plurality of ridges are fixedly connected to the surface of the kneading wheel, and the front cross section of the kneading wheel is conical.

[0009] Furthermore, the clutch gear, the fourth gear, the third gear and the second gear are fixed in a sector gear box, the third gear is coaxial with the second gear, and the clutch gear is pulled out of the first gear by a controlled electromagnetic switch, and is automatically reset to engage with the first gear by a pressure spring.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. The reverse rubbing wheel is set to effectively change the movement trajectory of the washed material in the drum, eliminate the inherent blind spot of the traditional drum washing machine, and significantly improve the washing effect. Since the rubbing wheel is perpendicular to the drum axis, the friction generated by the gravity of the material and the convex surface is avoided during the reverse rotation and washing process, so that the friction between the material and the convex edge of the rubbing wheel is greatly reduced, thereby effectively avoiding the mechanical wear of the washed material. While improving the washing effect, it can also maintain the advantage of low wear of the drum washing machine on the material. Since the device adopts small modulus and high-precision gears, and all groups of gears, gear shafts and other components are highly integrated in the gear box, it is not only easy to install, but also occupies a small space, so that after the use of the utility model, the original machine appearance is basically unchanged. When different models are upgraded and renovated using this utility model, it is only necessary to slightly change the convex platform of the rear cover of the washing machine according to the installation requirements of the gear box. In summary, the utility model has the unique advantages of not only good washing effect, but also low development cost, high commercial value, and easy transformation to mass production due to the small number of components involved in the new or changed design.

[0012] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the structure of the present embodiment;

[0014] Figure 2This is a schematic diagram of the roller rolling forward in this embodiment;

[0015] Figure 3 This is a schematic diagram of the reverse rolling of the roller in this embodiment.

[0016] In the figure: 1. water tub; 2. washing tub; 3. rubbing wheel; 4. bracket; 5. gear box; 6. hollow shaft; 7. rotating wheel; 8. first gear; 9. clutch gear; 10. automatic clutch; 11. spindle; 12. spindle gear; 13. third gear; 14. second gear; 15. fourth gear. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0018] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0020] See also Figures 1 to 3 , the utility model provides the following technical solutions:

[0021] A kneading drum washing machine comprises a water tub 1 and a washing tub 2 arranged in the inner cavity of the water tub 1. A hollow shaft 6 is fixedly connected to the middle position on the left side of the washing tub 2, and the left end of the hollow shaft 6 extends to the left side of the water tub 1 and is sleeved and fixed with a rotating wheel 7. The hollow design of the hollow shaft 6 is the key to the entire reverse rotation device. Its structural shape, processing accuracy and material application are all very important. Waterproof and anti-corrosion, long-term lubrication are necessary conditions. When the drum is directly driven by an electric motor, the rotating wheel 7 on the hollow shaft 6 in the figure is the rotor of the direct drive motor. When the drum is directly driven by an electric motor, the rotating wheel 7 on the hollow shaft 6 is the rotor of the direct drive motor. When the drum is driven by a motor and a belt, the connecting component is the pulley on the original drum shaft. The first gear 8 is fixed on the rear end shaft diameter of the drum. The outer wall of the hollow shaft 6 is sleeved with the first gear 8, and the bottom of the first gear 8 is engaged with a clutch gear 9. The bottom of the clutch gear 9 is provided with an automatic clutch 10. The rear side of the water tank 1 is provided with a bracket 4, and the left side of the bracket 4 is provided with a gear box 5. The semi-enclosed circular plane bracket 4 is fixed on the rear wall of the water tank 1 and is an important component for installing the gear box 5. Its function is that the design and assembly of the gear box 5 are The pitch circle of the first gear 8 of the hollow shaft 6 and the spindle gear 12 is used as a reference. Its processing accuracy and strength will determine the quality of the positioning and installation of the gear box 5. This bracket 4 can be reasonably set according to the actual situation of the motor directly driving the drum or the belt drive, that is, it has universality for drum washing machines of different brands and equivalent volumes. The automatic clutch 10 is installed in the inner cavity of the gear box 5, and the inner cavity of the hollow shaft 6 is rotatably connected with the spindle 11, and the right end of the spindle 11 is fixedly connected with the rubbing wheel 3. The rear end of the spindle 11 is provided with and fixed with the spindle gear 12, and the front end is connected with a fixed belt cam. The tapered rubbing wheel 3 with ridges is an important component for implementing reverse rotation washing. The coaxiality and matching accuracy with the inner hole bearing position of the hollow shaft 6 are particularly important. The use of closed waterproof lubrication is a necessary condition. The surface of the rubbing wheel 3 is fixedly connected with a plurality of ridges, and the front cross-section of the rubbing wheel 3 is conical. A spindle gear 12 is sleeved and fixed on the outer wall of the spindle 11 near the left end shaft diameter, and a second gear 14 is engaged with the bottom of the spindle gear 12, a third gear 13 is provided on the right side of the second gear 14, and a fourth gear 15 is engaged with the bottom of the third gear 13.

[0022] Working principle: When the utility model is in use, the solid shaft of the washing tub 2 (hereinafter referred to as the drum) of the traditional drum washing machine is replaced with a hollow shaft 6, one end of the hollow shaft 6 is fixedly connected to the washing tub 2 and is directly driven by the rotating wheel 7, and the other end of the hollow shaft 6 (i.e., the left side of the rotating wheel 7) is provided with a first gear 8, which is engaged with a clutch gear 9 on a gear box 5 installed on a bracket 4, and the spindle gear 12 is driven by the second gear 14 to drive the rubbing wheel on the right end of the spindle, and the relative movement of the drum and the rubbing wheel causes a vortex circle to be generated in the space inside the washing tub 2, and when the washed objects are in the outer circle of the vortex, the centrifugal force is used to cause the materials to collide with the convex edges provided on the inner circle of the drum to achieve artificial hammering;At the same time, the materials in the inner circle of the eddy current (i.e., the periphery of the rubbing wheel 3) form an effect of artificial scrubbing through the positive and negative mechanical friction between the convex edges of the rubbing wheel 3 and the mutual friction generated by the reversal of the materials under the action of the eddy current. The reverse rotation drive device realizes the automatic clutch of the reversing device through the orderly control of the electromagnetic switch according to the different requirements of each washing link, completes the process of pre-washing, scrubbing and rinsing in the bite state, and then automatically disengages to make the rubbing wheel 3 stationary and enter the spin-drying and drainage link. After the spin-drying and drainage are completed, the bite is automatically restored to enter the standby state. After the above improvements, the drum The washing machine realizes an organic combination of scrubbing and beating. The reversing device is composed of 3 groups of small-module gears and corresponding gear shafts, wherein the first gear 8 is fixed on the hollow shaft 6, and is the main driving gear that drives the spindle 11 to rotate in the reverse direction, and rotates simultaneously with the drum by sharing kinetic energy, and the spindle gear 12 is fixed on the left end of the spindle 11, and the spindle gear 12 is driven by the second gear 14 on the reverse rotating device to drive the rubbing wheel on the right end of the spindle, so that the spindle 11 and the rubbing wheel 3 are driven in the process of pre-washing → rinsing → washing, no matter whether the drum is rotating forward or reverse, the rubbing wheel 3 can always keep the corresponding reverse rotation with the drum, and the clutch gear 9, the fourth gear 15, the third gear 13, and the second gear 14 are fixed in the sector gear box 5, which is convenient for the effective lubrication of each group of gears. The clutch gear 9 is coaxial with the fourth gear 15, and the third gear 13 is coaxial with the second gear 14. The clutch gear 9 is pulled away from the first gear 8 by the controlled electromagnetic switch, and is automatically reset and engaged with the first gear 8 by the pressure spring, thereby completing the automatic control of the reversing device. The product of the three groups of gear ratios determines the speed ratio of the reverse rotation of the spindle 11 and the rotation of the drum. The gear module is determined according to the load of the washing machine rubbing wheel. On the premise of meeting the strength Small modulus gears are used as much as possible to reduce the volume and integrate the installation. Bearings or bearing sleeves are configured at both ends of each gear shaft according to its maximum speed. Oil-resistant sealing rings are set on the outside of the bearings or bearing sleeves. The housing blank of the gear box 5 is formed by aluminum alloy die-casting. The gear shaft hole and the clutch fork shaft hole are processed by precision machinery, so that the gear transmission in the box can not only meet the requirements of mechanical strength and precision, but also effectively reduce the volume and reduce the weight. Due to the use of closed lubrication, the reverse rotation device is not only small in size and easy to install, but also can meet the requirements of low wear, low noise, one-time oil injection lubrication, and long-term use. ;

[0023] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A kneading drum washing machine, comprising a water tub (1) and a washing tub (2) arranged in the inner cavity of the water tub (1), characterized in that: A hollow shaft (6) is fixedly connected to the middle position on the left side of the washing tub (2), and the left end of the hollow shaft (6) extends to the left side of the water tub (1) and is sleeved and fixed with a rotating wheel (7). A first gear (8) is sleeved and fixed to the outer wall of the hollow shaft (6), and a clutch gear (9) is engaged at the bottom of the first gear (8), and an automatic clutch (10) is arranged at the bottom of the clutch gear (9). A bracket (4) is installed on the rear side of the water tub (1), and a gear box (5) is installed on the left side of the bracket (4). The automatic clutch (10) is installed in the inner cavity of the gear box (5). The inner cavity of the hollow shaft (6) is rotatably connected to a spindle (11), and the right end of the spindle (11) is A rubbing wheel (3) is fixedly connected thereto; a spindle gear (12) is sleeved and fixedly mounted near the left end of the spindle (11); a second gear (14) is engaged at the bottom of the spindle gear (12); the second gear (14) drives the spindle gear (12) to rotate in the reverse direction; the relative movement between the drum and the rubbing wheel generates an eddy current in the space inside the washing tub; a third gear (13) is arranged on the right side of the second gear (14); a fourth gear (15) is engaged at the bottom of the third gear (13); the hollow shaft (6), the first gear (8), the clutch gear (9), the spindle (11), the spindle gear (12), the fourth gear (15), the third gear (13) and the second gear (14) form a reverse device.

2. A kneading drum washing machine as claimed in claim 1, characterized in that: The reverse device is composed of three groups of small-module gears and corresponding gear shafts, wherein the first gear (8) is fixed on the hollow shaft (6) and is the main driving gear for driving the spindle (11) to rotate in the reverse direction, and shares kinetic energy with the drum to rotate simultaneously, and the spindle gear (12) is fixed on the left end of the spindle (11) and is driven by the second gear (14) on the reverse rotation device.

3. A kneading drum washing machine as claimed in claim 1, characterized in that: A plurality of ridges are fixedly connected to the surface of the kneading wheel (3), and the front view cross section of the kneading wheel (3) is conical.

4. A kneading drum washing machine as claimed in claim 1, characterized in that: The clutch gear (9), the fourth gear (15), the third gear (13) and the second gear (14) are fixed in the sector gear box (5). The clutch gear (9) is coaxial with the fourth gear (15). The clutch gear (9) is pulled out of the first gear (8) by a controlled electromagnetic switch and automatically resets to mesh with the first gear (8) by a pressure spring.

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