Drum washing machine

Abstract

A drum-type washing machine is provided. [Solution] The present invention discloses a drum-type washing machine, which includes a water receiving tub and a vent pipe connected to the interior of the water receiving tub, and further includes a heat dissipation structure, the exhaust port of the vent pipe connected to the outside air through the heat dissipation structure. By connecting the vent pipe to the outside air through the heat dissipation structure, the heat dissipation structure can dissipate and condense steam generated inside the water receiving tub, and discharge the condensed steam to the outside air. It can also ventilate the water receiving tub and the outside, thereby balancing the pressure between the water receiving tub and the outside air. In this way, the heat dissipation structure integrates the functions of heat dissipation, condensation, and ventilation, thereby simplifying the structure of the drum-type washing machine.

Description

[Technical Field]

[0001] The present invention belongs to the field of home appliance technology, and more particularly to a drum-type washing machine. [Background technology]

[0002] A washing machine is an electrical cleaning appliance that uses electrical energy to generate mechanical action to clean clothes. Current washing machines are primarily divided into whirlpool washing machines and drum washing machines. A conventional drum washing machine primarily comprises a housing, an outer tub, an inner tub, a drive unit, and a dosing module assembly installed within the housing. The inner tub is rotatably installed within the outer tub, and the drive unit can drive the inner tub to rotate within the outer tub. The dosing module assembly is equipped with a water inlet valve to supply water to the outer tub. A vent pipe is installed between the dosing module and the outer tub. The vent pipe's intake port is connected to the outer tub, and the vent pipe's exhaust port is connected to the outside air via the dosing module. This allows the outer tub to ventilate with the outside air via the vent pipe and the dosing module, achieving pressure equilibrium between the outer tub and the outside air. However, it is unable to dissipate heat and condense the steam generated in the water receiving tub.

[0003] In view of this, the present invention has been presented. Summary of the Invention [Problem to be solved by the invention]

[0004] The technical problem to be solved by the present invention is to provide a drum-type washing machine that overcomes the drawbacks of the prior art. By connecting the vent pipe to the outside air through the heat dissipation structure, the heat dissipation structure can condense the steam generated inside the water tub and discharge the condensed steam to the outside air. It can also ventilate the water tub and the outside, thereby balancing the pressure between the water tub and the outside. In this way, the heat dissipation structure integrates the functions of heat dissipation, condensation, and ventilation, thereby achieving the goal of simplifying the structure of the drum-type washing machine. [Means for solving the problem]

[0005] In order to solve the above technical problems, the basic concept of the technical idea adopted by the present invention is as follows.

[0006] The present invention provides a drum-type washing machine including a water receiving tub and a vent pipe communicating with the interior of the water receiving tub. The drum-type washing machine further includes a heat dissipation structure, and an exhaust port of the vent pipe communicates with the outside air via the heat dissipation structure.

[0007] Furthermore, a heat dissipation chamber is formed inside the heat dissipation structure. The heat dissipation chamber has an exhaust port communicating with the outside air, and the exhaust port of the ventilation pipe communicates with the interior of the heat dissipation chamber.

[0008] Furthermore, a bellows-shaped heat dissipation flow path is provided inside the heat dissipation chamber, and an air intake port communicating with the ventilation pipe and an air exhaust port communicating with the outside air are provided at both ends of the heat dissipation flow path. The air exhaust port of the heat dissipation chamber serves as the air exhaust port of the heat dissipation flow path, and the air intake port and the air exhaust port of the heat dissipation flow path are provided at the front and rear of the heat dissipation chamber, respectively.

[0009] Furthermore, several heat-dissipating partition walls are provided inside the heat-dissipating chamber. The several heat-dissipating partition walls divide the interior of the heat-dissipating chamber into several rectangular channels arranged in front-to-rear order, each extending in the left-to-right direction. The upstream and downstream ends of the several rectangular channels are interconnected to form heat-dissipating channels, and the intake and exhaust ports of the heat-dissipating channels are provided in front of the frontmost rectangular channel and behind the rearmost rectangular channel, respectively.

[0010] Furthermore, the heat dissipation chamber is rectangular, and the heat dissipation partition is rectangular. Of the two adjacent heat dissipation partitions, the left side wall of one heat dissipation partition forms a left main communication port surrounding the left side wall, top and bottom walls of the heat dissipation chamber, and the right side wall of the other heat dissipation partition forms a right main communication port surrounding the right side wall, top and bottom walls of the heat dissipation chamber. The left side main communication port and the right side main communication port each connect the upstream and downstream ends of the two adjacent rectangular flow paths.

[0011] Furthermore, auxiliary communication ports are provided to connect two adjacent rectangular flow paths to the front and rear heat dissipation partition walls among the three adjacent heat dissipation partition walls. The auxiliary communication port divides the heat dissipation partition wall into a left partial partition wall and a right partial partition wall, and the right wall of the right partial partition wall forms a right main communication port surrounding the right wall of the heat dissipation chamber and the top and bottom walls of the heat dissipation chamber, and the left-right dimension of the main communication port is larger than the left-right dimension of the auxiliary communication port.

[0012] The heat dissipation channel intake is located at the bottom of the front wall of the heat dissipation chamber, facing the auxiliary communication port in the front heat dissipation partition. The lower wall on the right side of the heat dissipation chamber slopes gradually from top to bottom into the heat dissipation chamber, forming a flow guide. The flow guide extends to the right of the auxiliary communication ports and below the heat dissipation channel intake, and the heat dissipation channel intake serves as a return port for condensed water.

[0013] Furthermore, the exhaust port of the heat dissipation chamber is a circular port, and vertically arranged air guide plates are provided on the inner peripheral wall of the exhaust port of the heat dissipation chamber. The air guide plates divide the exhaust port of the heat dissipation chamber into vertically arranged air guide ports, and the upper surface of each air guide plate extends gradually from top to bottom outward from the heat dissipation chamber, sloping gradually.

[0014] Furthermore, a housing is provided outside the water receiving tub, and the heat dissipation structure is provided in the left corner of the rear of the housing. The heat dissipation chamber exhaust port is provided on the rear wall of the housing, and a water receiving tub exhaust port is provided above the water receiving tub. The ventilation pipe has a horizontal portion extending from the heat dissipation flow path intake port forward beyond the water receiving tub exhaust port, a vertical portion extending upward from the water receiving tub exhaust port to be on the same plane as the end of the horizontal portion, and an inclined portion connecting the end of the horizontal portion and the end of the vertical portion.

[0015] Furthermore, a water inlet valve is provided in the left corner of the rear of the housing, located to the right of the heat dissipation structure, and a water inlet pipe is connected to the water inlet valve's water outlet. An annular window packing is provided at the water receiving tub's opening, and the inner periphery of the annular window packing is formed to surround a water inlet chamber that communicates with the water receiving tub. The water inlet pipe is provided above the vent pipe and extends from the rear to the annular window packing, and the water inlet pipe's water outlet is provided above the annular window packing and communicates with the water inlet chamber.

[0016] Furthermore, a pipe clamp structure for the water inlet pipe is further provided, and the pipe clamp structure is With the base, a clamping portion formed by bending upward from a first side of the base and forming a clamping space for clamping the first side of the base and the water inlet pipe; The base includes a deadbolt formed to protrude from a second side opposite the first side, used to fix the base on another component, and fixed in a lock hole of the washing machine from the inside to the outside of the washing machine.

[0017] In addition, the deadbolt a fixing portion formed by protruding horizontally from the second side of the base; The fixing part is provided with a first guide part that is formed so as to gradually incline from top to bottom in a direction away from the base, from the side of the fixing part that is away from the base, and that is used to guide the fixing of the fixing part.

[0018] In addition, the deadbolt a second guide portion formed to protrude downward from the bottom of the fixing portion, with a gap between an end face adjacent to the base and a second side of the base, and gradually inclined from top to bottom in a direction approaching the base; The second guide portion further includes an engaging groove formed by an end face adjacent to the base, the bottom of the fixing portion, and the second side of the base.

[0019] In addition, the deadbolt The fixing portion is formed to protrude downward from the bottom thereof, the downward protruding dimension being greater than the downward protruding dimension of the second guide portion, and the bottom further includes an abutment portion that abuts against another component.

[0020] Furthermore, the pipe clamp structure is The base further includes an additional clamping portion that is bent upward from the second side of the base and that forms an additional clamping space between the base and the second side and that clamps another component.

[0021] Furthermore, the clamping portion is a horizontal clamping portion that is formed to protrude from the first side of the base, has an arc shape, and protrudes outside the clamping portion; a vertical clamping portion formed by bending upward from the extended end of the horizontal clamping portion; The clamping member has an inclined clamping portion formed by bending the extending end of the vertical clamping portion upward and into the clamping portion, the inclined clamping portion being arc-shaped and projecting outward from the clamping portion.

[0022] Furthermore, the clamping portion is The clamp further includes a gripping portion formed by bending the inclined clamping portion upward from the extended end thereof and outward from the clamping portion, the gripping portion being used to provide a biasing site for an external force that changes the size of the clamping space.

[0023] Furthermore, the lock hole is a horizontal fixing portion into which the fixing portion can be inserted and whose outer periphery abuts against the upper portion of the fixing portion; The vertical fixing portion is provided below the horizontal fixing portion, the second guide portion can pass through it, the lower wall is inserted into the locking groove and locked, and the outer periphery abuts against the second side of the base. The washing machine The reinforcing member includes a horizontal reinforcing portion provided with a horizontal fixing portion and a vertical reinforcing portion provided with a vertical fixing portion, and the vertical reinforcing portion further includes an L-shaped reinforcing plate clamped in the additional clamping space.

[0024] Furthermore, the lock hole is a vertical abutment portion that is coaxially disposed with the vertical fixing portion, is provided below the vertical fixing portion, and has a radial dimension smaller than the radial dimension of the vertical fixing portion; The contact portion penetrates the vertical contact portion from the inside to the outside of the washing machine, A suspension spring is provided on the outer tub, one end of the suspension spring passes through the vertical abutment portion and is suspended from the vertical abutment portion, and the suspension spring is clamped between the bottom of the abutment portion and the lower wall of the vertical abutment portion. [Effects of the Invention]

[0025] By adopting the above technical idea, the present invention has the following advantageous effects compared to the prior art.

[0026] By connecting the vent pipe to the outside air via the heat dissipation structure, the heat dissipation structure can condense the steam generated inside the water tub and discharge it to the outside air after condensing, and can also ventilate the water tub and the outside to balance the pressure between the water tub and the outside air. In this way, the heat dissipation structure integrates the functions of heat dissipation, condensation, and ventilation, thereby simplifying the structure of the drum-type washing machine.

[0027] Specific embodiments of the present invention will now be described in more detail with reference to the drawings. [Brief explanation of the drawings]

[0028] The drawings constituting a part of the present invention are intended to provide a further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are intended to interpret the present invention and are not intended to unduly limit the present invention. Needless to say, the drawings in the following description are merely some examples, and those skilled in the art can derive other drawings based on these drawings without requiring creative efforts. The drawings are as follows:

[0029] [Figure 1] 1 is a structural schematic diagram of a drum-type washing machine provided in a first embodiment of the present invention; [Figure 2] 1 is a first perspective view of the assembly of the ventilation pipe and the heat dissipation structure provided by the first embodiment of the present invention; FIG. [Figure 3] FIG. 2 is a second perspective view of the assembly of the ventilation pipe and the heat dissipation structure provided by the first embodiment of the present invention. [Figure 4] 1 is a partial enlarged view of a drum-type washing machine provided in a first embodiment of the present invention; [Figure 5] 1 is a structural schematic diagram of a heat dissipation structure provided by Example 1 of the present invention; [Figure 6] 1 is a structural schematic diagram of a drum-type washing machine provided in a second embodiment of the present invention; [Figure 7] FIG. 7 is an enlarged view of part A in FIG. 6. [Figure 8] FIG. 10 is an assembly diagram of a tension spring provided by Example 2 of the present invention. [Figure 9] FIG. 2 is a schematic diagram of a pipe clamp structure provided by Example 2 of the present invention. [Figure 10] 1 is a structural schematic diagram of a locking hole provided in a second embodiment of the present invention;

[0030] It should be explained that these drawings and written description are not intended to limit the scope of the inventive concept in any way, but rather to explain the inventive concept to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION OF THE INVENTION

[0031] In order to clarify the purpose, technical idea and advantages of the embodiments of the present invention, the technical idea of ​​the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. The following examples are for illustrating the present invention, but are not intended to limit the scope of the present invention.

[0032] It should be explained in the description of the present invention that the orientations or positional relationships indicated by the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "inner," "outer," etc. are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate the description and simplification of the present invention, and do not indicate or imply that the devices or components shown necessarily have a specific orientation or are constructed and operated in a specific orientation, and should not be understood as limiting the present invention.

[0033] As should be explained in the description of the present invention, unless otherwise clearly specified or limited, the terms "attach," "connect to each other," and "connect" should be understood in a broad sense. For example, they may refer to a fixed connection, a detachable connection, or an integral connection. They may also refer to a mechanical connection or an electrical connection. They may also refer to a direct connection or an indirect connection via an intermediate medium. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention according to specific circumstances. [Example]

[0034] 1 and 4, the present invention provides a drum-type washing machine including a water receiving tub and a vent pipe 7 communicating with the interior of the water receiving tub. The drum-type washing machine further includes a heat dissipation structure 8, and an exhaust port of the vent pipe 7 communicates with the outside air via the heat dissipation structure 8.

[0035] In this embodiment of the present invention, by connecting vent pipe 7 to the outside air via heat dissipation structure 8, heat dissipation structure 8 can condense the steam generated inside the water tub and release the condensed steam to the outside air, and can also ventilate the water tub and the outside to balance the pressure between the water tub and the outside air. In this way, heat dissipation structure 8 integrates the functions of heat dissipation, condensation, and ventilation, thereby simplifying the structure of the drum-type washing machine.

[0036] Drum type washing machine structure 1: A drum type washing machine comprises a housing, an outer tub 1 provided within the housing, and an inner tub provided within the outer tub 1, the outer tub 1 being a water receiving tub. Drum type washing machine structure 2: A drum type washing machine comprises a housing and an inner tub provided within the housing, the inner tub being a water receiving tub, the inner tub being an inner tub without holes.

[0037] For example, when a drying program is run in a washing machine, steam is generated in the outer tub 1, causing the pressure inside the outer tub 1 to become relatively high. The outer tub 1 is connected to the outside air via the vent pipe 7 and the heat dissipation structure 8, allowing the outer tub 1 to ventilate with the outside air and achieve pressure equilibrium. At the same time, the heat dissipation structure 8 condenses the steam generated in the outer tub 1 with heat, and the steam is discharged to the outside air after condensation. The condensed water produced by the heat dissipation condensation can be returned to the outer tub 1 via the vent pipe 7.

[0038] Furthermore, for example, odors often occur inside a washing machine that has not been used for a long time. Therefore, by connecting the outer tub 1 to the outside air via the ventilation pipe 7 and the heat dissipation structure 8, the outer tub 1 can be ventilated with the outside air, thereby eliminating odors inside the outer tub 1.

[0039] 3 and 4, in the embodiment of the present invention, a heat dissipation chamber 83 is formed inside the heat dissipation structure 8. The heat dissipation chamber 83 has an exhaust port communicating with the outside air, and the exhaust port of the ventilation pipe 7 communicates with the inside of the heat dissipation chamber 83.

[0040] In this embodiment of the present invention, the exhaust port of the ventilation pipe 7 is in communication with the outside air via the heat dissipation chamber 83. The heat dissipation chamber 83 provides a space for heat dissipation condensation of steam, and by delaying the discharge of steam, the steam can be sufficiently heat dissipated and condensed within the heat dissipation chamber 83.

[0041] 4, a bellows-shaped heat dissipation flow path 831 is provided inside the heat dissipation chamber 83, and an intake port communicating with the ventilation pipe 7 and an exhaust port communicating with the outside air are provided at both ends of the heat dissipation flow path 831. The exhaust port of the heat dissipation chamber 83 serves as the exhaust port of the heat dissipation flow path 831, and the intake port and exhaust port of the heat dissipation flow path 831 are provided on the front and rear sides of the heat dissipation chamber 83, respectively.

[0042] The steam enters the bellows-shaped heat dissipation flow path 831 and is condensed with heat dissipation within the bellows-shaped heat dissipation flow path 831. The bellows-shaped heat dissipation flow path 831 increases the length of the heat dissipation flow path 831. This allows the steam to remain within the heat dissipation flow path 831, lengthening the time for the steam to condense with heat dissipation, and the steam can be condensed with heat sufficiently. The steam collides with and comes into contact with the side wall of the heat dissipation flow path 831, which is relatively low temperature, and the heat is dissipated from the heat dissipation flow path 831 to the outside of the heat dissipation chamber 83. The condensed water condenses on the side wall of the heat dissipation flow path 831, and eventually most of it flows onto the bottom wall of the heat dissipation flow path 831.

[0043] The front side of heat dissipation chamber 83 is the side of the washing machine where the tub opening of outer tub 1 is located. The intake and exhaust ports of heat dissipation channel 831 are provided at the front and rear sides of heat dissipation chamber 83, respectively, to increase the length of the condensation channel.

[0044] 5, in this embodiment of the present invention, several heat dissipation partition walls are provided inside the heat dissipation chamber 83. The several heat dissipation partition walls divide the inside of the heat dissipation chamber 83 into several rectangular channels arranged in front-to-back order, and each rectangular channel extends in the left-to-right direction. The upstream and downstream ends of the several rectangular channels are interconnected to form a heat dissipation channel 831, and the intake and exhaust ports of the heat dissipation channel 831 are located in front of the frontmost rectangular channel and behind the rearmost rectangular channel, respectively.

[0045] In an embodiment of the present invention, for example, a first heat-dissipating partition wall, a second heat-dissipating partition wall, and a third heat-dissipating partition wall are provided in the heat dissipation chamber 83 at the front end. In this case, four rectangular channels are formed in the heat dissipation chamber 83: a first rectangular channel at the front end, a second rectangular channel, a third rectangular channel, and a fourth rectangular channel at the rear end. The right downstream end of the first rectangular channel is connected to the right upstream end of the second rectangular channel, the left downstream end of the second rectangular channel is connected to the left upstream end of the third rectangular channel, and the right downstream end of the third rectangular channel is connected to the right upstream end of the fourth rectangular channel, so that each rectangular channel extends in the left-right direction. A heat dissipation channel intake port 8312 is provided on the front wall of the first rectangular channel and is located between the left upstream end and the right downstream end of the first rectangular channel. A heat dissipation channel exhaust port 8313 is provided on the rear wall of the fourth rectangular channel and is located between the right upstream end and the left downstream end of the fourth rectangular channel.

[0046] Furthermore, the heat dissipation chamber 83 is rectangular, and the heat dissipation partition walls are rectangular. Of the two adjacent heat dissipation partition walls, the left side wall of one heat dissipation partition wall is surrounded by the left side wall of the heat dissipation chamber 83 and the top and bottom walls of the heat dissipation chamber 83 to form a left side main communication port 832, and the right side wall of the other heat dissipation partition wall is surrounded by the right side wall of the heat dissipation chamber 83 and the top and bottom walls of the heat dissipation chamber 83 to form a right side main communication port 833, and the left side main communication port 832 and the right side main communication port 833 each communicate the upstream and downstream ends of the two adjacent rectangular flow channels.

[0047] Specifically, the front wall of the first heat dissipation partition, the left and right side walls of the heat dissipation chamber 83, and the front wall of the heat dissipation chamber 83 form a first rectangular flow path in a surrounding manner. The rear wall of the first heat dissipation partition, the left and right side walls of the heat dissipation chamber 83, and the front wall of the second heat dissipation partition form a second rectangular flow path in a surrounding manner. The rear wall of the second heat dissipation partition, the left and right side walls of the heat dissipation chamber 83, and the front wall of the third heat dissipation partition form a third rectangular flow path in a surrounding manner. The rear wall of the third heat dissipation partition, the left and right side walls of the heat dissipation chamber 83, and the rear wall of the heat dissipation chamber 83 form a fourth rectangular flow path in a surrounding manner.

[0048] 2 and 3, the heat dissipation chamber 83 includes a case 82 with an opening at the top and an upper cover 81 that covers the opening. The hollow inside the case 82 forms the heat dissipation chamber 83, and the upper cover 81 and the case 82 are connected by an insert. A gap is provided between the right side wall of the first heat dissipation partition and the right side wall of the case 82, and the other side walls of the first heat dissipation partition are connected to the bottom wall of the case 82, the left side wall of the case 82, and the upper cover 81, respectively, so that a right main communication port 833 is formed between the right side wall of the first heat dissipation partition, the right side wall of the heat dissipation chamber 83, the upper cover 81, and the bottom wall of the case 82. A gap is provided between the left side wall of the second heat dissipation partition and the left side wall of the case 82, and the other side walls of the second heat dissipation partition are connected to the bottom wall of the case 82, the right side wall of the case 82, and the upper cover 81, respectively. A left main communication port 832 is formed between the left side wall of the second heat dissipation partition, the left side wall of the heat dissipation chamber 83, the upper cover 81, and the bottom wall of the case 82. The formation of the left main communication port 832 and the right main communication port 833 increases the vertical length of the left main communication port 832 and the right main communication port 833, preventing gas from filling up and preventing it from entering the next rectangular channel. The right main communication port 833 communicates with the first and second rectangular channels, and the left main communication port 832 communicates with the second and third rectangular channels.

[0049] In this embodiment of the present invention, an auxiliary communication port 841 is provided to communicate two adjacent rectangular flow paths in each of the front and rear heat dissipation partition walls among the three adjacent heat dissipation partition walls. The auxiliary communication port 841 divides the heat dissipation partition wall 84 into a left partial partition wall 842 and a right partial partition wall 843. The right wall of the right partial partition wall 843 forms a right main communication port 833 so as to surround the right wall of the heat dissipation chamber 83 and the top and bottom walls of the heat dissipation chamber 83. The left-right dimension of the main communication port is larger than the left-right dimension of the auxiliary communication port 841.

[0050] 3, in this embodiment of the present invention, the heat dissipation channel intake port 8312 is provided at the bottom of the front wall of the heat dissipation chamber 83, facing the auxiliary communication port 841 of the front heat dissipation partition wall. The lower wall on the right side of the heat dissipation chamber 83 gradually slopes from top to bottom into the heat dissipation chamber 83 from the right wall of the heat dissipation chamber 83, forming a flow guide portion 8341. The flow guide portion 8341 extends to the right of the auxiliary communication ports 841 and below the heat dissipation channel intake port 8312, and the heat dissipation channel intake port 8312 serves as a return port for condensed water.

[0051] In this embodiment of the present invention, the exhaust port of heat dissipation chamber 83 is a circular port, and vertically arranged air guide plates 8314 are provided on the inner peripheral wall of the exhaust port of heat dissipation chamber 83. The air guide plates 8314 divide the exhaust port of heat dissipation chamber 83 into vertically arranged air guide ports 8515, and the upper surface of each air guide plate 8314 extends outward from heat dissipation chamber 83, gradually sloping from top to bottom.

[0052] 1, in this embodiment of the present invention, a housing is provided outside the water receiving tub, and heat dissipation structure 8 is provided in the left corner of the rear of the housing. An exhaust port for heat dissipation chamber 83 is provided on the rear wall of the housing, and a water receiving tub exhaust port is provided above the water receiving tub. Vent pipe 7 includes horizontal portion 71 extending from heat dissipation flow path intake port 8312 forward beyond the water receiving tub exhaust port, vertical portion 72 extending upward from the water receiving tub exhaust port to the same plane as the end of horizontal portion 71, and inclined portion 73 connecting the end of horizontal portion 71 and the end of vertical portion 72.

[0053] A water inlet valve 9 is further provided in the left corner of the rear of the housing, located to the right of the heat dissipation structure 8, and a water inlet pipe 3 is provided at the water outlet of the water inlet valve 9. An annular window packing 2 is provided at the tank opening of the water receiving tank, and the inner circumference of the annular window packing 2 is formed to surround a water inlet chamber that communicates with the water receiving tank. The water inlet pipe 3 is provided above the vent pipe 7 and extends from the rear to the annular window packing 2, and the water outlet of the water inlet pipe 3 is provided above the annular window packing 2 and communicates with the water inlet chamber. [Example]

[0054] As shown in Figures 6 and 7, the present invention provides a drum-type washing machine, which comprises: An annular window packing 2 whose inner periphery surrounds the water inlet chamber; The water outlet is provided on the annular window packing 2, and the water inlet pipe 3 communicates with the water inlet chamber. The washing machine further includes a pipe clamping structure 4 that is provided on the washing machine and is used to clamp the water inlet pipe 3.

[0055] The pipe clamp structure 4 is Base 41 and a clamping portion 42 formed by bending upward from a first side of the base 41 and forming a clamping space for clamping the first side of the base 41 and the water inlet pipe 3; A deadbolt 44 is formed to protrude from a second side of the base 41 opposite to the first side, and is used to fix the base 41 onto another component.

[0056] In this embodiment of the present invention, other components clamp water inlet pipe 3 in the washing machine using a clamping space formed by the inside of clamp portion 42 and the first side of base 41, and base 41 is fixed to the washing machine with deadbolt 44. This allows water inlet pipe 3 to be firmly attached to the washing machine, reduces vibration of water inlet pipe 3 during operation, improves the stability of water inlet pipe 3, and allows the water outlet of water inlet pipe 3 to stably enter the water inlet chamber of the window gasket. This improves the accuracy with which water enters the washing machine through the water inlet chamber of the window gasket and extends the service life of the water inlet pipe.

[0057] A drum-type washing machine comprises a housing, an outer tub 1 disposed within the housing, and an inner tub disposed within the outer tub 1, with the outer tub 1 serving as a water receiving tub. A water inlet valve is disposed on the housing, and a water inlet pipe 3 is disposed on the water inlet valve. The water inlet valve controls the entry of external wash water into the water inlet pipe 3. An annular window packing 2 is disposed between the clothes inlet on the housing and the tub opening of the outer tub 1, and the inner circumference of the annular window packing 2 forms a surrounding water inlet chamber. The water inlet pipe 3 has a water outlet disposed on the peripheral wall of the window packing, which communicates with the water inlet chamber, and one end of the water inlet chamber has an end port communicating with the outer tub 1. When water is being added, wash water enters the water inlet chamber from the water inlet pipe 3 and then enters the outer tub 1 from an end port at one end of the water inlet chamber. Water enters the outer tub 1 from the water inlet chamber, but in reality, it communicates with the gap between the outer tub 1 and the inner tub.

[0058] The washing machine has a rectangular housing with a left and right side panel opposite each other, and is provided with a water inlet pipe 3 and a pipe clamping structure 4 inside the housing. Taking Fig. 6 as an example, the pipe clamping structure 4 of the present application is provided on the left side panel of the washing machine, the water inlet pipe 3 has a horizontal water inlet section extending in the front-to-rear direction, and the pipe clamping structure 4 is used to clamp the horizontal water inlet section, which is made of a hard material.

[0059] As shown in FIG. 7, in the embodiment of the present application, the pipe clamp structure 4 is Base 41 and It projects from the first side of the base 41 into the washing machine and is formed by bending it upward, and the inside is provided with the first side of the base 41 and a clamp part 42 that clamps the water inlet pipe 3 and forms a clamp space 43 whose size is adjustable.

[0060] In this embodiment, the interior of the washing machine is the interior of outer tub 1, base 41 is rectangular, and the first side of base 41 is the right side of base 41. Clamping portion 42 is located on the right side of base 41, and the right side of base 41 is flat. The right side of base 41 protrudes and is bent upward to form clamping portion 42. The hook opening of clamping portion 42 faces upward, and both the front and rear sides have openings. Water inlet pipe 3 enters clamping portion 42 through the hook opening, and passes through clamping portion 42 through the front and rear openings, thereby being clamped within clamping space 43.

[0061] As shown in FIG. 9, specifically, the clamping portion 42 is a horizontal clamp portion 421 formed in an arc shape and protruding from the first side of the base 41 into the washing machine and protruding outside the clamp portion 42; a vertical clamping portion 422 formed by bending upward from the extended end of the horizontal clamping portion 421; The vertical clamp portion 422 has an inclined clamp portion 423 formed by bending the vertical clamp portion 422 upward from its extended end and into the clamp portion, and the inclined clamp portion 423 has an arc shape and protrudes outward from the clamp portion 42 .

[0062] Since the water inlet pipe 3 is circular, the horizontal clamping portion 421 and the inclined clamping portion 423 are arc-shaped, which allows them to better fit with the outer wall of the circular water inlet pipe 3. This increases the strength with which the clamping space 43 clamps the water inlet pipe 3.

[0063] The horizontal clamping portion 421 has a first arc portion, a second arc portion, and a third arc portion. The first arc portion is a transition portion between the right side of the base 41 and the second arc portion, and the first and third arc portions are symmetrical about the second arc portion. The inside of the horizontal clamping portion 421 is in close contact with the arc-shaped outer wall of the bottom of the circular water inlet pipe 3, the second arc portion provides upward support for the circular water inlet pipe 3, and the first and third arc portions work together to clamp the circular water inlet pipe 3 on the left and right.

[0064] The vertical clamp portion 422 is installed opposite the right side of the base 41, and the inside of the vertical clamp portion 422 and the right side of the base 41 are in close contact with the vertical outer walls on both the left and right sides of the circular water inlet pipe 3, and the vertical clamp portion 422 and the right side of the base 41 work together to perform left and right clamping functions on the circular water inlet pipe 3.

[0065] The inside of the inclined clamping portion 423 is in close contact with the arc-shaped outer peripheral wall at the top of the circular water inlet pipe 3. The inclined clamping portion 423 acts to press downward on the circular water inlet pipe 3. On the one hand, the inclined clamping portion 423 acts in cooperation with the right side of the base 41 to clamp the water inlet pipe 3, and on the other hand, the inclined clamping portion 423 acts in cooperation with the second arc portion to clamp the circular water inlet pipe 3 from above and below.

[0066] The pipe clamping structure 4 is a plastic part, which allows the size of the clamping space 43 formed by the inside of the clamping portion 42 and the right side of the base 41 to be adjusted. Therefore, the clamping space 43 can clamp water inlet pipes 3 of different pipe diameters.

[0067] When clamping the water inlet pipe 3, applying a tensile force to the right on the vertical clamping portion 422 or the inclined clamping portion 423 of the clamping portion 42 increases the clamping space 43. The water inlet pipe 3 passes through the hook opening of the clamping portion 42 and enters the clamping space 43. When the tensile force is released, the vertical clamping portion, the inclined clamping portion, and the third arc portion elastically return to their original position and come into contact with the outer wall of the water inlet pipe 3. This achieves clamping of the water inlet pipe 3.

[0068] As shown in FIG. 9, more specifically, the clamping portion 42 is The inclined clamping portion 423 is bent upward from the extended end thereof and outward from the clamping portion, and is used to provide a biasing point for an external force that changes the size of the clamping space. The inclination of the gripping portion 424 allows the user's hand to easily apply a pulling force in the right direction to the first bent portion.

[0069] As shown in FIG. 7, in the embodiment of the present invention, the pipe clamp structure 4 includes: The washing machine further includes a deadbolt 44 formed to protrude from a second side of the base 41 opposite to the first side of the base 41 to the outside of the washing machine and fixed in a lock hole 53 of the washing machine from the inside of the washing machine to the outside.

[0070] In this embodiment of the present invention, the second side of base 41 is the left side of base 41, and deadbolt 44 is formed to protrude from the left side of base 41. Deadbolt 44 is fixed into locking hole 53 of the washing machine, thereby securing base 41 to the washing machine, and thereby securing water inlet pipe 3 firmly to the washing machine. Specifically, locking hole 53 is provided on the left side panel of the washing machine, and deadbolt 44 is fixed into locking hole 53 from right to left.

[0071] As shown in FIGS. 8 and 9, the deadbolt 44 further includes: a fixing portion 441 for fixing the washing machine in a lock hole 53; The fixing part 441 is provided at one end thereof away from the inside of the washing machine, and is gradually inclined from top to bottom toward the outside of the washing machine, and is provided with a first guide part 442 for guiding the fixing part 441 to enter the lock hole 53.

[0072] The fixed portion 441 is rectangular, the bottom of the fixed portion 441 is flat, and the bottom surface of the first guide portion 442 is on the same plane as the bottom surface of the fixed portion 441.

[0073] In the process of fixing the fixing portion 441 into the lock hole 53, the first guide portion 442 first guides the fixing portion 441 into the lock hole 53, and then the fixing portion 441 is fixed to the lock hole 43. The first guide portion 442 increases the accuracy of fixing the deadbolt 44 to the lock hole 53. The first guide portion 442 is provided at the left end of the fixing portion 441.

[0074] More specifically, as shown in FIGS. 8 and 9, the deadbolt 44 includes: a second guide part (443) that is formed by protruding downward from the bottom of the fixing part (441), has a gap between one end thereof that is close to the inside of the washing machine and a second side of the base (41), and is gradually inclined from top to bottom toward the inside of the washing machine; a second guide portion 443 that is elongated and extends from the center of the bottom of the fixing portion 441 to the right side and has a gap between it and the left side of the base 41; The second guide portion 443 is formed by an end surface of one end thereof adjacent to the inside of the washing machine, the bottom of the fixing portion 441, and the second side of the base 41, and the formed groove is a locking groove 444 that is installed downward, There are two locking grooves 444 provided on both the left and right sides of the bottom of the fixing portion 441, respectively.

[0075] As shown in FIG. 10, the lock hole 53 is The fixing portion 441 can be inserted into the horizontal fixing portion 531, and the outer periphery of the horizontal fixing portion 531 abuts against the upper part of the fixing portion 441. The vertical fixing portion 532 is provided below the horizontal fixing portion 531, through which the second guide portion 443 can pass, and has a lower wall inserted and locked into the locking groove 444, and an outer periphery abutting the second side of the base 41.

[0076] The deadbolt 44 further includes a position limiting portion 447. The fixing portion 441 protrudes upward to form the position limiting portion 447, which extends in the left-right direction. There are multiple position limiting portions 447, arranged from front to rear. The position limiting portion 447 prevents the fixing portion 441 from moving too far to the left, causing the locking groove 444 and the vertical fixing portion 532 to come loose. When the fixing portion 441 moves left to a predetermined position and the locking groove 444 and the lower wall of the vertical fixing portion 532 lock together, the left end of the position limiting portion 447 abuts against the left wall of the horizontal fixing portion 531.

[0077] The left portion of the position limiting portion 447 is arc-shaped, which reduces the impact force caused by contact between the position limiting portion 447 and the left wall of the horizontal fixing portion 531.

[0078] When a leftward thrust is applied to the pipe clamp structure 4 during fastening, the first guide part 442 guides the fastening part 441 into the horizontal fastening part 531. Because the second guide part is installed at an angle, the left part of the second guide part penetrates the vertical fastening part 532, but the right part of the second guide part does not. By continuing to apply a leftward thrust to the pipe clamp structure 4, the right part of the second guide part penetrates the vertical fastening part 532, and at the same time, the locking groove 444 abuts against the bottom wall of the vertical fastening part 532. This secures the deadbolt 44 in the locking hole 53.

[0079] More specifically, as shown in Figure 9, the deadbolt: The washing machine further includes an additional clamping portion 445 that protrudes from the second side of the base 41 to the outside and is bent upward, forming an additional clamping space 45 between the inside and the second side of the base 41.

[0080] The hook opening of the additional clamping part 445 is installed facing upward, and the additional clamping part 445 has a first clamping part extending horizontally to the left and a second clamping part extending vertically upward. The inside of the first clamping part, the inside of the second clamping part, and the left side of the base 41 form an additional clamping space 45, with the first clamping part performing a supporting function and the second clamping part and the left side of the base 41 performing a clamping function.

[0081] As shown in Figure 6, the washing machine It comprises a horizontal reinforcing part 51 provided with a horizontal fixing part 531 and a vertical reinforcing part 52 provided with a vertical fixing part 532, and the vertical reinforcing part 52 comprises an L-shaped reinforcing plate 5 clamped in the additional clamping space 45.

[0082] The left side plate of the washing machine has a horizontally extending upper wall and a vertically extending right side wall, and the horizontal reinforcing part 51 is in close contact with the upper wall of the left side plate, and the vertical reinforcing part 52 is installed parallel to the right side wall at an interval.

[0083] The first clamping portion supports the bottom of the vertical reinforcing portion 52, and both sides of the vertical reinforcing portion 52 are in close contact with the second clamping portion and the left side of the base 41, respectively.

[0084] When installing the pipe clamping structure 4 , the vertical reinforcing portion 52 is first clamped in the additional clamping space 45 before the deadbolt 44 is inserted into the locking hole 53 .

[0085] In this embodiment of the present invention, a suspension spring 6 is provided on the washing machine drum, extending upward. The upper portion of the suspension spring 6 is bent and passes through the lock hole 53 from the inside to the outside of the washing machine, and is suspended above the lock hole 53. The suspension spring 6 is clamped between the deadbolt 44 and the lock hole 53.

[0086] As shown in Figures 6 and 8, in this embodiment of the present invention, the outer tub 1 is suspended above the washing machine by a suspension spring 6, which dampens vibrations of the outer tub 1 and improves the stability of the outer tub 1. The suspension spring 6 is bent and suspended within the locking hole 53, and after the deadbolt 44 is secured within the locking hole 53, it is clamped between the deadbolt 44 and the locking hole 53. This secures the suspension spring 6 and prevents it from falling off during operation of the washing machine. This further improves the stability of the outer tub 1, and the water inlet pipe 3 and suspension spring 6 are stabilized by the same deadbolt 44 and locking hole 53, simplifying the structure.

[0087] As shown in FIGS. 9 and 10, the lock hole 53 is The vertical fixing portion 532 further includes a vertical abutment portion 533 that is disposed coaxially with the vertical fixing portion 532, is provided below the vertical fixing portion 532, and has a radial dimension smaller than that of the vertical fixing portion 532.

[0088] Deadbolt 44 is The fixing part 441 is formed to protrude downward from the bottom thereof, and the downward protruding dimension is greater than the downward protruding dimension of the second guide part 443. The fixing part 441 further includes an abutment part 446 that penetrates the vertical abutment part 533 from the inside to the outside of the washing machine.

[0089] As shown in FIG. 8, the suspension spring 6 is suspended on the vertical abutment portion 533 , and the suspension spring 6 is clamped between the bottom of the abutment portion 446 and the lower wall of the vertical abutment portion 533 .

[0090] The abutting portion 446 is elongated and extends from the left end to the right end of the fixed portion 441, with a portion of the abutting portion 446 penetrating the vertical fixed portion 532 and the vertical abutting portion 533. There are multiple abutting portions 446, and the multiple abutting portions 446 are arranged from front to rear with intervals between them.

[0091] The clamp spring includes a spiral portion 61 and connecting portions 62 provided on both ends of the spiral portion 61. The connecting portion 62 at one end of the spiral portion 61 is bent to pass through the vertical abutment portion 533, and the bottoms of the multiple abutment portions 446 abut against the outer peripheral wall of the connecting portion 62, and the multiple abutment portions 446 increase the strength of the abutment with the connecting portion 62.

[0092] The above description is merely a preferred embodiment of the present invention and does not limit the present invention in any way. The present invention has been disclosed above through preferred embodiments, but is not intended to limit the present invention. Those skilled in the art can make slight changes or modifications using the technical content shown above to create equivalent embodiments that are equivalently changed within the scope of the technical solutions of the present invention, and can also combine or replace the embodiments in the above embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention still fall within the scope of the present invention. [Explanation of symbols]

[0093] Figure: 1 - outer tank, 2 - annular window packing, 3 - water inlet pipe, 4 - pipe clamp structure, 41 - base, 42 - first hook part, 421 - horizontal clamp part, 422 - vertical clamp part, 423 - inclined clamp part, 424 - grip part, 43 - first clamp space, 44 - deadbolt, 441 - fixing part, 442 - first guide part, 443 - second guide part, 444 - locking groove, 445 - second hook part, 446 - abutment part, 447 - position limiting part, 45 - second clamp space, 5 - L-shaped reinforcing plate, 51 - horizontal reinforcing part, 52 - vertical reinforcing part, 53 - locking hole, 531 - horizontal fixing part, 53 2 - vertical fixing part, 533 - vertical abutment part, 6 - hanging spring, 61 - spiral part, 62 - connection part, 7 - ventilation pipe, 71 - horizontal part, 72 - vertical part, 73 - inclined part, 8 - heat dissipation structure, 81 - upper cover, 82 - case, 83 - heat dissipation chamber, 831 - heat dissipation flow path, 8311 - rectangular flow path, 8312 - heat dissipation flow path intake port, 8313 - heat dissipation flow path exhaust port, 8314 - air guide plate, 8315 - air guide port, 832 - left side main communication port, 833 - right side main communication port, 834 - lower wall of heat dissipation chamber, 8341 - flow guide part, 84 - heat dissipation partition wall, 841 - auxiliary communication port, 842 - left partial partition wall, 843 - right partial partition wall, 9 - water inlet valve.

Claims

1. This drum type washing machine is provided with a water receiving tub and a vent pipe communicating with the inside of the water receiving tub, and further includes a heat dissipation structure, and an exhaust port of the vent pipe communicates with the outside air via the heat dissipation structure.

2. 2. The drum-type washing machine according to claim 1, wherein a heat dissipation chamber is formed inside the heat dissipation structure, the heat dissipation chamber has an exhaust port communicating with the outside air, and the exhaust port of the vent pipe communicates with the inside of the heat dissipation chamber.

3. 3. The drum-type washing machine according to claim 2, wherein a bellows-shaped heat dissipation flow path is provided inside the heat dissipation chamber, and an intake port communicating with the air vent pipe and an exhaust port communicating with outside air are provided at both ends of the heat dissipation flow path, the exhaust port of the heat dissipation chamber serves as the exhaust port of the heat dissipation flow path, and the intake port and the exhaust port of the heat dissipation flow path are provided at the front and rear of the heat dissipation chamber, respectively.

4. 4. The drum-type washing machine according to claim 3, wherein the heat dissipation chamber is provided with a number of heat dissipation partitions, the heat dissipation partitions divide the heat dissipation chamber into a number of rectangular channels arranged in front-to-rear order, each rectangular channel extending in the left-to-right direction, the upstream and downstream ends of the rectangular channels interconnecting to form a heat dissipation channel, and the intake and exhaust ports of the heat dissipation channel are respectively provided in front of the frontmost rectangular channel and behind the rearmost rectangular channel.

5. 5. The drum-type washing machine according to claim 4, wherein the heat dissipation chamber is rectangular, the heat dissipation partition is rectangular, and of two adjacent heat dissipation partitions, a left side wall of one heat dissipation partition is surrounded by the left side wall of the heat dissipation chamber and the upper and lower walls thereof to form a left main communication port, and a right side wall of the other heat dissipation partition is surrounded by the right side wall of the heat dissipation chamber and the upper and lower walls thereof to form a right main communication port, and the left side main communication port and the right side main communication port respectively communicate the upstream and downstream ends of the two adjacent rectangular flow channels.

6. 6. The drum-type washing machine according to claim 5, wherein among the three adjacent heat-dissipating partition walls, the front and rear heat-dissipating partition walls are each provided with an auxiliary communication port communicating two adjacent rectangular flow paths, the auxiliary communication port divides the heat-dissipating partition wall into a left partial partition wall and a right partial partition wall, the right wall of the right partial partition wall is surrounded by the right wall of the heat-dissipating chamber and the upper and lower walls of the heat-dissipating chamber to form a right-side main communication port, and the left-right dimension of the main communication port is larger than the left-right dimension of the auxiliary communication port.

7. 7. The drum-type washing machine according to claim 6, wherein the heat dissipation channel intake port is provided at the bottom of the front wall of the heat dissipation chamber and directly faces the auxiliary connecting port of the front heat dissipation partition wall, the lower wall on the right side of the heat dissipation chamber gradually slopes from the right side wall of the heat dissipation chamber to form a guiding section, the guiding section extends to the right of each auxiliary connecting port and below the heat dissipation channel intake port, and the heat dissipation channel intake port serves as a return port for condensed water.

8. 8. The drum type washing machine according to claim 1, wherein the exhaust port of the heat dissipation chamber is a circular port, and upper and lower air guide plates are provided on an inner peripheral wall of the exhaust port of the heat dissipation chamber, the several air guide plates divide the exhaust port of the heat dissipation chamber into several air guide ports arranged one above the other, and an upper surface of each air guide plate extends outward from the heat dissipation chamber, gradually sloping from top to bottom.

9. 9. The drum-type washing machine according to claim 1, wherein a housing is provided outside the water receiving tub, the heat dissipation structure is provided in the left corner of the rear of the housing, the exhaust port of the heat dissipation chamber is provided on the rear wall of the housing, and the water receiving tub exhaust port is provided above the water receiving tub, and the vent pipe has a horizontal portion extending from the heat dissipation path intake port forward beyond the water receiving tub exhaust port, a vertical portion extending from the water receiving tub exhaust port upward to be on the same plane as the end of the horizontal portion, and an inclined portion connecting the end of the horizontal portion and the end of the vertical portion.

10. 10. The drum-type washing machine of claim 9, further comprising: a water inlet valve located at the left corner of the rear of the housing and positioned to the right of the heat dissipation structure; a water inlet pipe connected to the water outlet of the water inlet valve; an annular window packing at the tub opening of the water receiving tub, the inner periphery of which is formed to surround a water inlet chamber communicating with the water receiving tub; the water inlet pipe located above the vent pipe and extending from the rear to the annular window packing; and a water outlet of the water inlet pipe located on the annular window packing and communicating with the water inlet chamber.

11. The water inlet pipe further includes a pipe clamp structure, the pipe clamp structure comprising: With the base, a clamping portion formed by bending upward from a first side of the base and forming a clamping space for clamping the first side of the base and the water inlet pipe; The drum-type washing machine according to any one of claims 1 to 10, further comprising: a deadbolt formed to protrude from a second side of the base opposite to the first side, used to fix the base on another component, and fixed in a lock hole of the washing machine from the inside to the outside of the washing machine.

12. The deadbolt is a fixing portion formed by protruding horizontally from the second side of the base; 12. The drum-type washing machine according to claim 11, further comprising a first guide portion formed on a side of the fixing portion away from the base, the first guide portion being gradually inclined from top to bottom in a direction away from the base, and used to guide the fixing of the fixing portion.

13. The deadbolt is a second guide portion formed to protrude downward from a bottom portion of the fixing portion, with a gap between an end surface adjacent to the base and a second side of the base, and gradually inclined from top to bottom in a direction approaching the base; 13. The drum-type washing machine according to claim 12, further comprising a locking groove formed by an end surface of the second guide portion adjacent to the base, a bottom portion of the fixing portion, and the second side of the base.

14. The deadbolt is 14. The drum-type washing machine according to claim 13, further comprising a contact portion formed to protrude downward from the bottom of the fixing portion, the contact portion having a dimension greater than the dimension of the second guide portion, and the bottom of the fixing portion further comprising a contact portion that contacts another component.

15. The pipe clamp structure is 15. The drum-type washing machine according to claim 14, further comprising an additional clamping portion formed by bending upward from the second side of the base to form an additional clamping space between the second side of the base and the additional clamping portion for clamping other components.

16. The clamp part is a horizontal clamping portion that is formed to protrude from the first side of the base, has an arc shape, and protrudes outside the clamping portion; a vertical clamping portion formed by bending upward from the extended end of the horizontal clamping portion; The drum type washing machine according to any one of claims 11 to 15, further comprising an inclined clamp portion formed by bending the extended end of the vertical clamp portion upward and into the clamp portion, the inclined clamp portion being arc-shaped and protruding outside the clamp portion.

17. The clamp part is 17. The drum-type washing machine according to claim 16, further comprising a gripping portion formed by bending the inclined clamping portion upward from the extended end thereof and outward from the clamping portion, the gripping portion being used to provide a biasing portion for applying an external force to change the size of the clamping space.

18. The lock hole is a horizontal fixing portion into which the fixing portion can be inserted and whose outer periphery abuts against the upper portion of the fixing portion; a vertical fixing portion provided below the horizontal fixing portion, the vertical fixing portion being capable of receiving the second guide portion, the vertical fixing portion having a lower wall inserted into the locking groove and locked therein, and an outer periphery of the vertical fixing portion abutting against the second side of the base; The washing machine The drum type washing machine according to any one of claims 11 to 17, further comprising: a horizontal reinforcing portion provided with a horizontal fixing portion; and a vertical reinforcing portion provided with a vertical fixing portion, wherein the vertical reinforcing portion further comprises an L-shaped reinforcing plate clamped in the additional clamping space.

19. The lock hole is a vertical abutment portion that is coaxially disposed with the vertical fixing portion, is provided below the vertical fixing portion, and has a radial dimension smaller than the radial dimension of the vertical fixing portion; The contact portion penetrates the vertical contact portion from the inside to the outside of the washing machine, 19. The drum-type washing machine according to claim 18, wherein a suspension spring is provided on the outer tub, one end of the suspension spring passes through the vertical abutment portion and is suspended from the vertical abutment portion, and the suspension spring is clamped between the bottom of the abutment portion and the lower wall of the vertical abutment portion.

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