A drum washing machine

Abstract

The application discloses a drum washing machine, which comprises an inner drum, a driving shaft, a spraying and stirring device, and a spraying channel. The spraying and stirring device is fixedly connected with the driving shaft or rotatably connected with the driving shaft. The flexible and diverse connection forms of the spraying and stirring device provide multiple possibilities for the movement of the spraying and stirring device, meet the spraying requirement, provide more diverse water flow disturbance effects, and avoid the clothes winding around the spraying and stirring device due to insufficient driving force.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of washing machines, in particular, relates to a drum washing machine. BACKGROUND

[0002] The existing spray device of the drum washing machine is generally arranged at the inner drum door, and the water flow splashed on the inner drum door blocks the observation line of the user to the washing condition in the drum.

[0003] The Chinese patent with the application number 201710901069.5 discloses a drum washing machine, comprising: an outer drum; an inner drum rotatably arranged in the outer drum; a water supply device; and an agitator arranged in the inner drum and connected with the water supply device, the agitator is driven to rotate by the water supplied by the water supply device. According to the drum washing machine of the embodiment of the present application, the agitator is arranged in the inner drum, and the water supply device is used to supply water to the agitator, the agitator is driven to rotate by the water supplied by the water supply device, the belt pulley and the motor for driving the agitator to rotate in the related art are omitted, the structure is simplified, the control is more convenient, and the cost is reduced. In the invention, the water is sprayed into the drum by the agitator, which avoids the situation that the water flow splashed on the inner drum door blocks the observation line of the user. However, in the above-mentioned invention, the agitator is driven by the water supplied by the water supply device, the position of the clothes in the drum changes constantly, the driving force of the water pressure is relatively small, and the situation that the clothes block the rotation of the agitator exists.

[0004] Therefore, the present application is proposed. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art and provide a drum washing machine.

[0006] To solve the above-mentioned technical problems, the basic idea of the technical solution of the present application is as follows:

[0007] A drum washing machine, comprising

[0008] an inner drum;

[0009] a driving shaft, which is a hollow shaft and drives the inner drum to rotate;

[0010] a spray and agitation device arranged in the inner drum and having a spray channel connected with the driving shaft;

[0011] The spray and agitation device is fixedly connected with the driving shaft, or the spray and agitation device is rotatably connected with the driving shaft.

[0012] Further, the spray and agitation device is provided with a water inlet end, the water inlet end is provided with a clamping groove structure, and the side wall of the driving shaft is provided with a clamping jaw structure.

[0013] The position of the card slot structure corresponds to the position of the card claw structure, and the two are connected by clamping.

[0014] Further, the card slot structure is a groove provided on the end face of the water inlet end, and the bottom of the groove is provided with a radial fixed card slot.

[0015] The card claw structure is a radial protrusion provided on the side wall of the drive shaft.

[0016] The radial protrusion is an elastic element, or a radial mounting groove is provided on the drive shaft, and an elastic element is provided in the mounting groove, and the radial protrusion is fixedly connected with the elastic element.

[0017] The drive shaft extends into the groove, the end face of the drive shaft abuts against the bottom face of the groove, and the radial protrusion is clamped into the fixed card slot.

[0018] Further, the fixed card slot is annularly arranged on the bottom of the groove, and the radial protrusion is movably connected with the fixed card slot.

[0019] Alternatively, the fixed card slots are arranged at intervals on the bottom of the groove, and the positions of the radial protrusions correspond to the positions of the fixed card slots, and the two are fixedly connected.

[0020] Further, a lock sleeve and a ball are included, and the water inlet end of the spraying and stirring device is provided.

[0021] The lock sleeve is sleeved on the outside of the water inlet end, the wall surface of the water inlet end is provided with a through ball hole, and the side wall of the drive shaft is provided with a recess.

[0022] The diameter of the ball is greater than the thickness of the wall surface of the water inlet end, and when installed in place, the ball is located in the ball hole, one side abuts against the inner wall surface of the lock sleeve, and the other side abuts against the recess.

[0023] Further, the recesses are arranged at intervals on the side wall of the drive shaft, and the positions and numbers of the balls and ball holes correspond to the positions and numbers of the recesses.

[0024] Further, a self-locking spring is included and arranged between the inner wall surface of the lock sleeve and the outer wall surface of the water inlet end.

[0025] Further, a sealing structure is included.

[0026] The inner wall surface of the water inlet end is provided with an annular groove, and the sealing structure is arranged in the annular groove.

[0027] The inner ring of the sealing structure is stepped, and the shape of the outer wall of the top end of the drive shaft matches the inner ring structure of the sealing structure.

[0028] Furthermore, this includes a one-way clutch;

[0029] A groove is provided on the end face of the water inlet;

[0030] The one-way clutch is disposed in the groove and is fixedly connected to the inner wall of the groove and the outer wall of the drive shaft, respectively.

[0031] Furthermore, it also includes a sealing structure, which is disposed between the drive shaft and the bottom surface of the groove.

[0032] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0033] 1) By installing a spraying and stirring device at the bottom of the inner cylinder, this invention avoids spraying water splashing onto the machine door and affecting the user's observation line of sight;

[0034] 2) In this invention, the spraying and stirring device is fixedly connected to the drive shaft, or the spraying and stirring device can be rotatably connected relative to the drive shaft. The flexible and diverse movement forms provide multiple possibilities for the movement of the spraying and stirring device, which not only meets the spraying requirements, but also provides more diverse water flow disturbance effects, and avoids the situation where clothing gets tangled in the spraying and stirring device due to insufficient driving force.

[0035] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0036] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0037] Figure 1 This is a schematic diagram of the washing machine structure of the present invention;

[0038] Figure 2 This is the present invention. Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0039] Figure 3 This is the present invention. Figure 1 An enlarged diagram showing the structure at point A not yet fully installed;

[0040] Figure 4 This is the present invention.Figure 3 Enlarged schematic view of the structure at A in place;

[0041] Figure 5 is the present invention Figure 1 Enlarged schematic view of the structure at A.

[0042] In the figure: 100, machine body; 110, machine door; 120, detergent box; 130, controller; 140, drainage device; 141, drain pipe; 150, foot; 200, outer cylinder; 300, inner cylinder; 310, impeller body; 311, spraying chamber; 312, impeller cover plate; 313, spraying hole; 314, spraying water inlet hole; 315, water inlet end; 316, sealing structure; 317, annular groove; 318, ball hole; 319, groove; 320, lock sleeve; 321, ball; 322, circlip; 323, self-locking spring; 330, lifting rib; 400, drive shaft; 410, drive shaft water inlet hole; 420, claw structure; 421, pit; 422, mounting groove; 500, bearing; 600, dynamic sealing structure; 700, motor; 800, water inlet valve; 810, water inlet pipe / circulating water pipe; 820, water inlet retainer; 900, one-way clutch.

[0043] It should be noted that these drawings and written descriptions are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments will be described clearly and completely below with reference to the drawings in the embodiments of the present application. The following embodiments are used to illustrate the present application, but are not used to limit the scope of the present application.

[0045] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0046] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] Embodiment one

[0048] As Figure 1 shown, a drum washing machine, comprising a machine body 100, an outer drum 200 and an inner drum 300 arranged in the machine body 100, the outer drum 200 and the inner drum 300 are coaxially arranged. The outer drum 200 is fixedly arranged in the machine body 100, and the inner drum 300 is fixedly arranged on a driving shaft 400 and is driven to rotate by the driving shaft 400. The inner drum 300 is provided with a lifting rib 330, which can lift the clothes in the inner drum 300 to a certain height, and then the clothes fall down, through continuous lifting-falling, playing a beating role, thereby achieving the cleaning effect on the clothes. In order to enhance the wetting effect of the clothes in the inner drum 300, a spraying and stirring device is further arranged in the present application, which sprays water into the inner drum 300 through the spraying and stirring device, which can effectively improve the wetting effect of the clothes. At the same time, since the spraying and stirring device is arranged at the bottom of the inner drum 300, the spraying water is sprayed from back to front, which can control the spraying distance of the spraying water by controlling the water pressure, avoiding the spraying water from splashing on the inner drum door or the machine door 110, hindering the observation line of sight of the user. In addition, the spraying and stirring device can rotate with the driving shaft 400, or relative to the driving shaft 400, which plays a stirring disturbance role on the water flow in the inner drum 300, increases the diversity of water flow, enhances the contact force between water flow and clothes, and enhances the washing effect.

[0049] The spraying and stirring device is arranged in the inner drum 300 and has a spraying channel connected with the driving shaft 400. The driving shaft 400 is a hollow shaft, and the center of the driving shaft is provided with a driving shaft water inlet hole 410, through which water is supplied to the spraying channel, and the water flow is sprayed into the inner drum 300 after passing through the spraying and stirring device.

[0050] In the present application, the spraying stirring device is arranged on the driving shaft 400, the spraying stirring device is provided with a water inlet end 315, the center of the water inlet end is provided with a spraying water inlet hole 314, the spraying water inlet hole 314 constitutes part of a spraying channel, and the driving shaft water inlet hole 410 and the spraying water inlet hole 314 are communicated. The spraying stirring device is fixedly connected with the driving shaft 400, or the spraying stirring device is rotatably connected with the driving shaft 400. When the spraying stirring device is fixedly connected with the driving shaft 400, the driving shaft can drive the spraying stirring device to rotate, under the driving of the driving shaft 400, the driving force is less affected by the clothes, and the water flow in the inner drum 300 can be continuously disturbed; when the spraying stirring device is rotatably connected with the driving shaft 400, the spraying stirring device is relatively more free, and can be freely rotated under the driving of the water flow in the inner drum and the impact of the spraying water, so that the water flow in the inner drum 300 can be continuously disturbed.

[0051] As shown in Figure 1 , the spraying stirring device further comprises a stirrer connected with or integrally formed with the water inlet end 315. In the present embodiment, the stirrer adopts a pulsator structure, comprising a pulsator body 310 and a pulsator cover plate 312. The pulsator body 310 and the pulsator cover plate 312 have a spraying cavity 311 therebetween, which is communicated with the spraying water inlet hole 314 and constitutes another part of the spraying channel. In the present embodiment, the pulsator cover plate 312 covers the outer surface of the pulsator body 310 and has a shape matching that of the pulsator body 310, so as to enhance the disturbance to the water flow in the inner drum 300. The surface of the pulsator cover plate 312 is provided with spraying holes 313. The washing water or the circulating water enters the driving shaft water inlet hole 410 through the water inlet pipe 810, then enters the spraying water inlet hole 314, is distributed into the spraying cavity 311 through the spraying water inlet hole 314, and finally is sprayed into the inner drum 300 through the spraying holes 313.

[0052] As another scheme of the present embodiment, the pulsator cover plate 312 can also be arranged inside the pulsator body 310, and the spraying holes 313 are arranged on the wall surface of the pulsator body 310. The present application adopts the pulsator cover plate and the pulsator body to constitute the spraying cavity 311, instead of directly utilizing the internal structure of the pulsator body, which is beneficial to the regulation of the size of the spraying cavity 311 and has a certain adjusting effect on the spraying pressure of the spraying water.

[0053] In combination with Figure 1 and Figure 2 , the spraying stirring device comprises a water inlet end 315, the water inlet end 315 is provided with a clamping groove structure, the side wall of the driving shaft 400 is provided with a clamping claw structure 420, the clamping groove structure and the clamping claw structure 420 are correspondingly arranged, and the two are clamped and connected.

[0054] As shown in Figure 2As shown, the card slot structure is a groove 319 arranged on the end face of the water inlet end 315, the bottom of the groove 319 is provided with a radial fixed card slot, the pawl structure 420 is a radial protrusion arranged on the side wall of the drive shaft, when installed in place, the pawl structure 420 is connected with the fixed card slot.

[0055] In order to improve the assembly efficiency between the drive shaft 400 and the water inlet end 315, the radial protrusion 420 in the embodiment is an elastic element, or as shown Figure 2 The drive shaft 400 is provided with a radial mounting groove 422, the elastic element such as compression spring is arranged in the mounting groove 422, and the radial protrusion 420 is fixedly connected with the elastic element. When installed, the radial protrusion 420 is pressed into the mounting groove 422, the drive shaft 400 is inserted into the groove 319, and when installed in place, the end face of the drive shaft 400 abuts against the bottom face of the groove 319. The radial protrusion 420 is automatically popped out and clamped into the fixed card slot under the elastic force of the compressed elastic element, and the assembly of the drive shaft 400 and the water inlet end 315 is completed.

[0056] In order to avoid water entering the connection gap between the water inlet end 315 and the drive shaft 400, the sealing structure 316 is arranged between the water inlet end 315 and the drive shaft 400. The bottom face of the groove 319 is provided with an axial annular groove 317, and the sealing structure 316 is arranged in the annular groove 317, which plays a sealing role between the end face of the drive shaft 400 and the bottom face of the groove 319.

[0057] The radial fixed card slot arranged at the bottom of the groove 319 in the embodiment can be arranged in a ring shape, that is, the movable connection between the radial protrusion 420 and the fixed card slot can be realized. In order to improve the stability of the installation and operation, the radial protrusion 420 is preferably uniformly distributed along the wall face of the drive shaft 400.

[0058] Alternatively, the fixed card slots are uniformly distributed at the bottom of the groove 319, the position of the radial protrusion 420 corresponds to the position of the fixed card slot, and the two are fixedly connected. Further, the fixed connection between the spray stirring device and the drive shaft 400 is realized, the drive shaft can drive the spray stirring device to rotate, and under the drive of the drive shaft 400, the driving force is less affected by the clothes, and can provide continuous disturbance to the water flow in the inner cylinder 300.

[0059] Embodiment two

[0060] As shown Figure 1As shown, a drum washing machine, including a body 100, an outer drum 200 and an inner drum 300 arranged in the body 100, the outer drum 200 and the inner drum 300 are coaxially arranged. The outer drum 200 is fixedly arranged in the body 100, and the inner drum 300 is fixedly arranged on the driving shaft 400 and is driven to rotate by the driving shaft 400. The inner drum 300 is provided with a lifting rib 330, which can lift the clothes in the inner drum 300 to a certain height, and then the clothes fall down, through continuous lifting-falling, play the role of beating, so as to achieve the cleaning effect of the clothes. In order to enhance the wetting effect of the clothes in the inner drum 300, a spraying and stirring device is further arranged in the present application, which sprays water into the inner drum 300, which can effectively improve the wetting effect of the clothes. At the same time, since the spraying and stirring device is arranged at the bottom of the inner drum 300, the spraying water is sprayed from back to front, which can control the spraying distance of the spraying water by controlling the water pressure, avoiding the spraying water from splashing on the inner drum door or the machine door 110, hindering the observation line of the user. In addition, the spraying and stirring device can rotate with the driving shaft 400, or relatively rotate with the driving shaft 400, which can stir and disturb the water flow in the inner drum 300, increase the diversity of water flow, enhance the contact degree between water flow and clothes, and enhance the washing effect.

[0061] The spraying and stirring device is arranged in the inner drum 300 and has a spraying channel communicated with the driving shaft 400. The driving shaft 400 is a hollow shaft, and the center of the driving shaft is provided with a driving shaft water inlet hole 410 for water to enter the spraying channel, and the water flow is sprayed into the inner drum 300 after passing through the spraying and stirring device.

[0062] In the present application, the spraying and stirring device is arranged on the driving shaft 400, and the spraying and stirring device is provided with a water inlet end 315, and the center of the water inlet end is provided with a spraying water inlet hole 314, which constitutes part of the spraying channel, and the driving shaft water inlet hole 410 and the spraying water inlet hole 314 are communicated. The spraying and stirring device is fixedly connected with the driving shaft 400, or the spraying and stirring device is rotatably connected with the driving shaft 400. When the spraying and stirring device is fixedly connected with the driving shaft 400, the driving shaft can drive the spraying and stirring device to rotate, and under the driving of the driving shaft 400, the driving force is less affected by the clothes, which can provide continuous disturbance to the water flow in the inner drum 300. When the spraying and stirring device is rotatably connected with the driving shaft 400, the spraying and stirring device is relatively more free, which can rotate freely under the driving of the water flow in the inner drum and the impact of the spraying water, and can provide continuous disturbance to the water flow in the inner drum 300.

[0063] As shown in the drawings, Figure 1As shown, the spray stirring device further comprises a stirrer connected with or integrally formed with the water inlet end 315. In this embodiment, the stirrer adopts a pulsator structure, comprising a pulsator body 310 and a pulsator cover plate 312. The pulsator body 310 and the pulsator cover plate 312 have a spray chamber 311 therebetween, which is in communication with the spray water inlet hole 314 and constitutes another part of the spray channel. In this embodiment, the pulsator cover plate 312 covers the outer surface of the pulsator body 310 and has a shape matching that of the pulsator body 310, so as to enhance the disturbance to the water flow in the inner cylinder 300. The surface of the pulsator cover plate 312 is provided with spray holes 313. The washing water or circulating water enters the drive shaft water inlet hole 410 through the water inlet pipe 810, then enters the spray water inlet hole 314, is distributed into the spray chamber 311 through the spray water inlet hole 314, and is finally sprayed into the inner cylinder 300 through the spray holes 313.

[0064] As a further scheme of this embodiment, the pulsator cover plate 312 can also be arranged inside the pulsator body 310, and the spray holes 313 are arranged on the wall surface of the pulsator body 310. The present application uses the pulsator cover plate and the pulsator body to constitute the spray chamber 311, instead of directly using the internal structure of the pulsator body, which is conducive to regulating the size of the spray chamber 311 and has a certain adjusting effect on the spray pressure of the spray water.

[0065] In combination with Figure 1 , Figure 3 and Figure 4 , the water inlet end 315 and the drive shaft 400 are fixedly connected through the lock sleeve 320.

[0066] The lock sleeve 320 is arranged outside the water inlet end 315, and the inner wall surface of the lock sleeve 320 is provided with an annular protrusion. The wall surface of the water inlet end 315 is provided with a through ball hole 318, and the side wall of the drive shaft 400 is provided with a recess 421. Before installation, the lock sleeve 320 is pressed towards the pulsator body 310, then the drive shaft 400 is inserted into the spray water inlet hole 314 of the water inlet end 315, the ball 321 is placed into the ball hole 318, the outer wall surface of the water inlet end 315 is provided with an annular protrusion, and the annular protrusion on the inner wall surface of the lock sleeve 320 and the annular protrusion on the outer wall surface of the water inlet end 315 are provided with a self-locking spring 323. Under the elastic force of the self-locking spring 323, the lock sleeve 320 moves towards the drive shaft 400, the annular protrusion on the inner wall surface of the lock sleeve 320 exerts a radial pushing force on the ball 321, and the ball 321 is pressed into the recess 421, and the installation is completed.

[0067] In this embodiment, the diameter of the ball 321 is greater than the thickness of the wall surface of the water inlet end 315. When installed in place, the ball 321 is located in the ball hole 318, one side abuts against the annular protrusion on the inner wall surface of the lock sleeve 320, and the other side abuts against the recess 421.

[0068] The recesses 421 are circumferentially arranged on the side wall of the drive shaft 400 at intervals, and the positions and number of the balls 321 and ball holes 318 correspond to the positions and number of the recesses 421.

[0069] This embodiment also includes a sealing structure 316. An annular groove 317 is provided on the inner wall surface of the water inlet end 315, and the sealing structure 316 is disposed in the annular groove 317, which plays a sealing role between the end face of the drive shaft 400 and the bottom surface of the groove 319.

[0070] The inner ring of the sealing structure 316 is stepped, and the shape of the outer wall of the top end of the drive shaft 400 matches the inner ring structure of the sealing structure 316, also being stepped. When the drive shaft 400 and the water inlet end 315 are installed in place, the step on the outer wall of the drive shaft 400 engages with the inner ring structure of the sealing structure 316, thus achieving a seal.

[0071] Example 3

[0072] like Figure 1 As shown, a drum washing machine includes a body 100, an outer drum 200 and an inner drum 300 disposed within the body 100, the outer drum 200 and the inner drum 300 being coaxially arranged. The outer drum 200 is fixed inside the body 100, and the inner drum 300 is fixed on a drive shaft 400 and driven to rotate by the drive shaft 400. The inner drum 300 is provided with lifting ribs 330, which can lift the clothes in the inner drum 300 to a certain height, and then the clothes fall down. Through continuous lifting and falling, a tumbling effect is achieved, thereby achieving a washing effect on the clothes. To enhance the wetting effect on clothes in the inner drum 300, this invention also includes a spray agitator. This spray agitator sprays water into the inner drum 300, effectively improving the wetting effect. Furthermore, since the spray agitator is located at the bottom of the inner drum 300, the water sprays from back to front. The spray distance can be controlled by adjusting the water pressure, preventing water from splashing onto the inner drum door or machine door 110 and obstructing the user's view. In addition, the spray agitator can rotate with or relative to the drive shaft 400, agitating and disturbing the water flow in the inner drum 300. This increases the diversity of water flow, enhances the contact between the water and the clothes, and improves the washing effect.

[0073] A spray mixing device is installed inside the inner cylinder 300 and has a spray channel connected to the drive shaft 400. The drive shaft 400 is a hollow shaft, and a drive shaft water inlet 410 is provided at the center of the drive shaft. Water enters the spray channel through the drive shaft water inlet 410, and the water flows through the spray mixing device and is sprayed into the inner cylinder 300.

[0074] In the present application, the spraying stirring device is arranged on the driving shaft 400, the spraying stirring device is provided with a water inlet end 315, the center of the water inlet end is provided with a spraying water inlet hole 314, the spraying water inlet hole 314 constitutes part of a spraying channel, and the driving shaft water inlet hole 410 and the spraying water inlet hole 314 are communicated. The spraying stirring device is fixedly connected with the driving shaft 400, or the spraying stirring device is rotatably connected with the driving shaft 400. When the spraying stirring device is fixedly connected with the driving shaft 400, the driving shaft can drive the spraying stirring device to rotate, under the driving of the driving shaft 400, the driving force is less affected by the clothes, and the water flow in the inner drum 300 can be continuously disturbed; when the spraying stirring device is rotatably connected with the driving shaft 400, the spraying stirring device is relatively more free, and can rotate freely under the driving of the water flow in the inner drum and the impact of the spraying water, so that the water flow in the inner drum 300 can be continuously disturbed.

[0075] As shown in Figure 1 The spraying stirring device also includes a stirrer connected with or integrally formed with the water inlet end 315. In the present embodiment, the stirrer adopts a pulsator structure, including a pulsator body 310 and a pulsator cover plate 312. The pulsator body 310 and the pulsator cover plate 312 have a spraying cavity 311 therebetween, which is communicated with the spraying water inlet hole 314 and constitutes another part of the spraying channel. In the present embodiment, the pulsator cover plate 312 covers the outer surface of the pulsator body 310 and has a shape matching that of the pulsator body 310, so as to enhance the disturbance to the water flow in the inner drum 300. The surface of the pulsator cover plate 312 is provided with spraying holes 313. The washing water or the circulating water enters the driving shaft water inlet hole 410 through the water inlet pipe 810, then enters the spraying water inlet hole 314, is distributed into the spraying cavity 311 through the spraying water inlet hole 314, and finally is sprayed into the inner drum 300 through the spraying holes 313.

[0076] As another scheme of the present embodiment, the pulsator cover plate 312 can also be arranged inside the pulsator body 310, and the spraying holes 313 are arranged on the wall surface of the pulsator body 310. The present application adopts the pulsator cover plate and the pulsator body to constitute the spraying cavity 311, instead of directly utilizing the internal structure of the pulsator body, which is beneficial to the regulation of the size of the spraying cavity 311 and has a certain adjusting effect on the spraying pressure of the spraying water.

[0077] As shown in Figure 1 and Figure 5 In the present embodiment, a one-way clutch 900 is included, which is used to realize the fixed connection of the driving shaft 400 and the water inlet end 315. However, after the connection, the spraying stirring device can freely rotate around the driving shaft 400 or integrally rotate with the driving shaft 400.

[0078] The end face of the water inlet end 315 is provided with a groove 319, the one-way clutch 900 is arranged in the groove 319 and is fixedly connected with the inner wall face of the groove 319 and the outer wall face of the driving shaft 400 respectively. The one-way clutch 900 comprises an inner ring, an outer ring and balls, the inner ring is fixedly connected with the outer wall face of the driving shaft 400, the outer ring is fixedly connected with the inner wall face of the groove 319, and the inner ring and the outer ring are slidingly connected through the balls.

[0079] Due to the one-way motion attribute in the one-way clutch 900, for example, only clockwise rotation or counterclockwise rotation is allowed. In this embodiment, the one-way clutch 900 is taken as an example of free clockwise rotation, when the rotation direction of the driving shaft 400 is clockwise, the spraying and stirring device freely rotates under the action of the one-way clutch 900; when the rotation direction of the driving shaft 400 is counterclockwise, the spraying and stirring device rotates integrally with the driving shaft 400 under the action of the one-way clutch 900. Flexible and diverse motion forms provide multiple possibilities for the motion of the spraying and stirring device. During washing, since the driving shaft 400 drives the inner cylinder 300 to reciprocate clockwise and counterclockwise, the spraying and stirring device rotates freely under the combined action of the one-way clutch 900 and the driving shaft 400, and rotates under the driving of the driving shaft 400 at times, which not only meets the spraying requirement, but also provides more diverse water flow disturbance effect, and avoids the situation that the clothes are entangled with the spraying and stirring device due to insufficient driving force. During dehydration, the driving shaft 400 can be arranged to rotate counterclockwise, thereby driving the spraying and stirring device to rotate together, which can avoid the entanglement and block of the clothes by the spraying and stirring device when the spraying and stirring device rotates freely during dehydration, so that the dehydration process is more efficient and fast.

[0080] In order to avoid water entering the connection gap between the water inlet end 315 and the driving shaft 400, a sealing structure 316 is arranged between the water inlet end 315 and the driving shaft 400. The bottom face of the groove 319 is provided with an axial annular groove 317, and the sealing structure 316 is arranged in the annular groove 317 and plays a sealing role between the end face of the driving shaft 400 and the bottom face of the groove 319.

[0081] Embodiment Four

[0082] As Figure 1As shown, a drum washing machine, including a body 100, an outer drum 200 and an inner drum 300 arranged in the body 100, the outer drum 200 and the inner drum 300 are coaxially arranged. The outer drum 200 is fixedly arranged in the body 100, and the inner drum 300 is fixedly arranged on the driving shaft 400 and is driven to rotate by the driving shaft 400. The inner drum 300 is provided with a lifting rib 330, which can lift the clothes in the inner drum 300 to a certain height, and then the clothes fall down, through continuous lifting-falling, play the role of beating, so as to achieve the cleaning effect of the clothes. In order to enhance the wetting effect of the clothes in the inner drum 300, a spraying and stirring device is further arranged in the present application, which sprays water into the inner drum 300, which can effectively improve the wetting effect of the clothes. At the same time, since the spraying and stirring device is arranged at the bottom of the inner drum 300, the spraying water is sprayed from back to front, which can control the spraying distance of the spraying water by controlling the water pressure, avoiding the spraying water from splashing on the inner drum door or the machine door 110, hindering the observation line of the user. In addition, the spraying and stirring device can rotate with the driving shaft 400, or relatively rotate with the driving shaft 400, which can stir and disturb the water flow in the inner drum 300, increase the diversity of water flow, enhance the contact degree between water flow and clothes, and enhance the washing effect.

[0083] The spraying and stirring device is arranged in the inner drum 300 and has a spraying channel communicated with the driving shaft 400. The driving shaft 400 is a hollow shaft, and the center of the driving shaft is provided with a driving shaft water inlet hole 410 for water to enter the spraying channel, and the water flow is sprayed into the inner drum 300 after passing through the spraying and stirring device.

[0084] In the present application, the spraying and stirring device is arranged on the driving shaft 400, and the spraying and stirring device is provided with a water inlet end 315, and the center of the water inlet end is provided with a spraying water inlet hole 314, which constitutes part of the spraying channel, and the driving shaft water inlet hole 410 and the spraying water inlet hole 314 are communicated. The spraying and stirring device is fixedly connected with the driving shaft 400, or the spraying and stirring device is rotatably connected with the driving shaft 400. When the spraying and stirring device is fixedly connected with the driving shaft 400, the driving shaft can drive the spraying and stirring device to rotate, and under the driving of the driving shaft 400, the driving force is less affected by the clothes, which can provide continuous disturbance to the water flow in the inner drum 300; when the spraying and stirring device is rotatably connected with the driving shaft 400, the spraying and stirring device is relatively more free, which can rotate freely under the driving of the water flow in the inner drum and the impact of the spraying water, and can provide continuous disturbance to the water flow in the inner drum 300.

[0085] As shown in the drawings, Figure 1As shown, the spraying and stirring device further comprises a stirrer connected with or integrally formed with the water inlet end 315. In the embodiment, the stirrer adopts a pulsator structure, comprising a pulsator body 310 and a pulsator cover plate 312. The pulsator body 310 and the pulsator cover plate 312 have a spraying chamber 311 therebetween, which is in communication with the spraying water inlet hole 314 and constitutes another part of the spraying channel. In the embodiment, the pulsator cover plate 312 covers the outer surface of the pulsator body 310 and has a shape matching that of the pulsator body 310, so as to enhance the disturbance of the water flow in the inner drum 300. The surface of the pulsator cover plate 312 is provided with spraying holes 313. The washing water or the circulating water enters the driving shaft water inlet hole 410 through the water inlet pipe 810, then enters the spraying water inlet hole 314, is distributed into the spraying chamber 311 through the spraying water inlet hole 314, and is finally sprayed into the inner drum 300 through the spraying holes 313.

[0086] As another scheme of the embodiment, the pulsator cover plate 312 can also be arranged inside the pulsator body 310, and the spraying holes 313 are arranged on the wall surface of the pulsator body 310. The pulsator cover plate and the pulsator body are adopted to constitute the spraying chamber 311, instead of directly utilizing the internal structure of the pulsator body, which is advantageous to the regulation of the size of the spraying chamber 311 and has a certain adjusting effect on the spraying pressure of the spraying water.

[0087] In the embodiment, the driving shaft 400 has a double-power driving structure, comprising a hollow first driving shaft and a second driving shaft (not shown). The first driving shaft is coaxially sleeved outside the second driving shaft. The first driving shaft is fixedly connected with the inner drum 300, and the second driving shaft is fixedly connected with the spraying and stirring device.

[0088] The second driving shaft is provided with a driving shaft water inlet hole 410. The spraying channel of the water inlet end 315 is in communication with the driving shaft water inlet hole 410 of the second driving shaft. The spraying water enters the inner drum 300 through the driving shaft water inlet hole 410 and the spraying channel.

[0089] The rotation directions of the first driving shaft and the second driving shaft can be the same or different, and thus the movement directions of the spraying and stirring device and the inner drum 300 can be the same or different. The flexible and diverse movement forms provide multiple possibilities for the movement of the spraying and stirring device. During washing, the inner drum 300 and the spraying and stirring device can relatively rotate or rotate in the same direction, which meets the spraying requirement, provides more diverse water flow disturbance effects, and avoids the clothes winding around the spraying and stirring device due to insufficient driving force. During dehydration, the driving shaft 400 can be arranged to rotate together with the spraying and stirring device, which avoids the winding and blocking of the clothes by the spraying and stirring device during dehydration, so that the dehydration process is more efficient and fast.

[0090] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any skilled person in the art can make some changes or modifications to the above-mentioned technical content with the above-mentioned prompt without departing from the technical solution of the present application, and any simple modification, equivalent change and modification of the above-mentioned embodiments made according to the technical essence of the present application without departing from the technical solution of the present application still belong to the scope of the present application.

Claims

1.A drum washing machine, comprising a drum; a drive shaft, which is a hollow shaft, driving the drum to rotate; a spraying and stirring device arranged in the drum and having a spraying channel communicating with the drive shaft; characterized in that the spraying and stirring device is fixedly connected with the drive shaft; the spraying and stirring device is provided with a water inlet end connected with the drive shaft, a spraying water inlet hole is arranged at the center of the water inlet end, the spraying water inlet hole is part of the spraying channel, and the aperture of the spraying water inlet hole near the water outlet end side gradually increases in the water outlet direction; the spraying and stirring device further comprises a stirrer connected with or integrally formed with the water inlet end, the stirrer comprises a pulsator body and a pulsator cover plate matched with the shape of the pulsator body, and the pulsator cover plate and the pulsator body form a spraying chamber with adjustable size; the spraying chamber communicates with the downstream end of the spraying water inlet hole, the upstream end of the spraying water inlet hole communicates with the downstream end of the drive shaft, and the downstream end of the drive shaft is fixedly connected with the water inlet end through a lock sleeve; wherein the lock sleeve is sleeved on the outside of the water inlet end, the inner periphery of the lock sleeve is provided with a plurality of balls, the balls pass through the wall surface of the water inlet end and are pressed by the lock sleeve into the recesses arranged on the side wall of the downstream end of the drive shaft. 2.The drum washing machine according to claim 1, characterized in that a plurality of ball holes are arranged through the wall surface of the water inlet end; the diameter of the balls is greater than the thickness of the wall surface of the water inlet end, when installed in place, the balls are located in the ball holes, one side abuts against the inner wall surface of the lock sleeve, and the other side abuts against the recesses. 3.The drum washing machine according to claim 2, characterized in that the recesses are arranged on the side wall of the drive shaft in a circumferential direction, and the positions and number of the balls and the ball holes correspond to the positions and number of the recesses. 4.The drum washing machine according to claim 2, characterized in that a self-locking spring is arranged between the inner wall surface of the lock sleeve and the outer wall surface of the water inlet end. 5.The drum washing machine according to claim 2, characterized in that a sealing structure is arranged; an annular groove is arranged on the inner wall surface of the water inlet end, and the sealing structure is arranged in the annular groove; the inner ring of the sealing structure is in a stepped shape, and the shape of the top end outer wall surface of the drive shaft matches the structure of the inner ring of the sealing structure.

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