Door body sealing ring of a clothes dryer

Abstract

The application discloses a door sealing ring of a clothes dryer, which comprises a ring-shaped body and a fixing part, and the fixing part is a bending structure formed by bending outward from the ring-shaped body. The fixing part of the sealing ring can be installed on the inner side of the door body or the front plate by arranging the fixing part with the bending structure on the ring-shaped body of the door sealing ring. When the door of the clothes dryer is closed, the sealing ring is prevented from being turned inside the clothes-throwing opening due to the extrusion of the door body, and the problem of poor sealing of the sealing ring is solved, and the sealing performance of the door body of the clothes dryer is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of clothes drying machine, in particular, relates to a door sealing ring of clothes drying machine. BACKGROUND

[0002] In the prior art, the sealing way between the door body of clothes drying machine and the drum of clothes drying machine is to install a hollow sealing strip in the installation groove of the front support of clothes drying machine. When the door body of clothes drying machine is closed, the inner frame plane of the door body extrudes the hollow sealing strip, and the contact surface of the hollow sealing strip is always in close contact to form a seal. Since the hollow sealing strip is filled with air, in the process of closing the door, as the closing angle gradually decreases, the hollow sealing strip is extruded and deformed more and more, and the air in the hollow sealing strip is extruded out. When the door body is closed to the final position, the hollow sealing strip is extruded to the maximum deformation, and the closing angle at this time is called 0 degree angle.

[0003] However, when the clothes drying machine is closed, especially when the door lock that can be pushed to pop open the door is used, the door body closing angle is required to exceed 0 degree angle when the door is closed, so as to overcome the spring force inside the door lock and make the door lock bolt reach the rotation angle of locking the door. Then the user removes the closing force, and the door body is pushed back to 0 degree angle under the action of the spring force of the door lock. Since the periphery of the sealing strip cannot be fixed on the front plate, the sealing strip will turn inward when the door is closed, which will affect the sealing performance of the sealing strip and cause the problem of poor sealing of the door body.

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

[0005] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art, provide a sealing ring with good sealing performance, and the installation structure of the sealing ring is stable, which prevents the outer peripheral part of the sealing ring from turning inward when the door is closed, thereby preventing the problem of poor sealing of the door body.

[0006] To solve the above technical problems, the basic idea of the technical scheme of the present application is to provide a door sealing ring of clothes drying machine, which comprises an annular body and a fixed part, and the fixed part is a bent structure extending outward from the annular body.

[0007] Further, the fixed part comprises,

[0008] a first folded edge extending outward from the annular body;

[0009] a second folded edge, which is a reverse bending extending along the rear wall from the first folded edge, extends toward the outer peripheral wall of the annular body, and forms an installation groove between the first folded edge and the second folded edge;

[0010] The third flange is formed by extending outward from the second flange towards the outside of the mounting groove.

[0011] Further, the first flange is formed by extending outward from the outer circumferential wall of the annular body near the front end.

[0012] Further, the second flange is formed by extending from the first flange towards the rear end of the annular body, and the rear wall of the first flange and the front wall of the second flange form the mounting groove.

[0013] Further, the third flange is formed by extending from the second flange along the radial direction of the annular body towards the outer circumference.

[0014] Further, the fixing portion further comprises a fourth flange formed by extending from the third flange towards the front end of the annular body, and a fixing groove is formed between the second flange, the third flange and the fourth flange.

[0015] Further, the first flange comprises a first flange segment and a second flange segment, the first flange segment is curved and extends from the annular body towards the front end, and cooperates with the front end surface of the annular body to form an arc surface, and the second flange segment extends from the first flange segment along the radial direction of the annular body towards the outside.

[0016] Further, the plug-in portion is formed by extending from the rear end surface of the annular body towards the rear side of the annular body.

[0017] The included angle between the extension direction of the bottom of the mounting groove towards the extension line of the slot and the extension direction of the plug-in portion is obtuse.

[0018] Further, the plug-in portion is formed by extending from the rear end surface of the annular body towards the rear side of the annular body.

[0019] The lip is formed by extending from the front end of the annular body towards the inside thereof.

[0020] The protection portion is protrudingly arranged on the inner circumferential wall of the annular body, and the front end surface of the protection portion is connected with the lip for protecting the lip.

[0021] The inner diameter of the protection portion is greater than the minimum inner diameter of the plug-in portion.

[0022] Further, a concave transition groove is arranged at the connection between the inner circumferential wall of the protection portion and the rear side wall of the lip, and the included angle between the extension direction of the bottom of the transition groove towards the extension line of the slot and the extension direction of the lip is acute.

[0023] Further, the lip is arranged obliquely from the front end of the annular body towards the rear end of the annular body.

[0024] Further, the sealing ring is of an integral structure.

[0025] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0026] (1) The present invention provides a fixing part with a bent structure on the annular body of the door sealing ring, which can be installed on the inner side of the door or the front panel to prevent the sealing ring from being over-compressed and flipped inside the clothing inlet when the dryer is closed, thus preventing the sealing ring from failing to seal properly.

[0027] (2) After installation, when the dryer closes its door, the observation window glass inside the door presses against the lip to seal the door. Since the lip does not have a hollow structure, there is no need to compress the air inside the sealing ring, making it easier for the user to close the door. This ensures both door sealing and a better user experience. The sealing ring also covers the exposed front end of the front support, improving the dryer's appearance when the door is open and preventing wear and tear on the front support surface when clothes are being taken out or put in.

[0028] (3) The protective part of the sealing ring of the present invention abuts against the front end face of the insertion groove of the front support, which can prevent the lip from flipping and deforming and contacting the front end face of the front support when the door is closed due to compression, thus avoiding wear on the lip. The transition groove can reduce the resistance when the lip is squeezed and flipped.

[0029] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0030] 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:

[0031] Figure 1 This is a schematic diagram of the door sealing ring of the present invention;

[0032] Figure 2 This is a cross-sectional schematic diagram of the door sealing ring of the present invention;

[0033] Figure 3 This is the present invention. Figure 2 Enlarged view of point A in the middle;

[0034] Figure 4 This is an assembly diagram of the door sealing ring of the present invention;

[0035] Figure 5 This is the present invention. Figure 4 Enlarged view of point B in the middle.

[0036] In the figure: 1, sealing ring; 11, annular body; 12, fixed part; 121, first folded edge; 122, second folded edge; 123, third folded edge; 124, fourth folded edge; 125, mounting groove; 126, fixed groove; 13, plug-in part; 14, lip; 15, protection part; 16, transition groove; 2, front plate; 21, first opening; 22, first flange; 3, front support; 31, second opening; 32, connecting part; 321, plug-in groove; 4, observation window glass; 41, second flange; 5, steel wire ring.

[0037] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, 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 not to limit the scope of the present application.

[0039] 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 based on 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 a limitation on the present application.

[0040] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can 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.

[0041] As Figures 1 to 5 shown, the door sealing ring 1 of the clothes dryer according to the present application comprises an annular body 11 and a fixed part 12, the fixed part 12 is a bent structure formed by bending outwardly from the annular body 11. The door sealing ring 1 can be arranged between the inner side of the door of the clothes dryer and the front plate 2 for mounting the door.

[0042] By arranging the fixed part 12 with the bending structure on the annular body 11 of the door body sealing ring 1, the fixed part 12 can be installed on the inner side of the door body or the front plate 2, preventing the sealing ring 1 from being turned inside to the inside of the clothes throwing opening when the clothes dryer door is closed, causing poor sealing of the sealing ring 1, improving the sealing of the clothes dryer door body.

[0043] As shown in Figures 2 to 3 The front end and the rear end of the door body sealing ring 1 are shown in the figure, the fixed part 12 includes a first flange 121 extending from the outer periphery of the annular body 11, a second flange 122 extending from the first flange 121 in the reverse direction of the rear wall of the first flange 121, a third flange 123 extending from the outer periphery of the annular body 11 in the direction of the second flange 122 to the outside of the mounting groove 125, and a mounting groove 125 formed between the rear wall of the first flange 121 and the front wall of the second flange 122 for fixing the sealing ring 1.

[0044] Preferably, the connection between the rear wall of the first flange 121 and the front wall of the second flange 122 is a straight line transition connection, and the bottom of the mounting groove 125 is a plane. The connection between the second flange 122 and the third flange 123 is a circular arc transition connection. The rear wall of the first flange 121 and the front wall of the second flange 122 are linearly extended, and the side wall of the cross section of the mounting groove 125 is linearly extended.

[0045] Preferably, the mounting groove 125 can be clamped on the door body or the front plate 2 with a structure matched with the mounting groove 125 for fixing the sealing ring 1. The mounting groove 125 is an annular mounting groove 125, and the annular body 11 is a cylindrical structure.

[0046] Further, the first flange 121 is arranged to extend outwardly from the outer periphery of the annular body 11 near the front end. And / or, the second flange 122 is arranged to extend from the first flange 121 to the rear end of the annular body 11. And / or, the third flange 123 is arranged to extend outwardly from the second flange 122 along the radial direction of the annular body 11.

[0047] The front wall and the rear wall of the third flange 123 are linearly arranged. The extension direction of the third flange 123 is perpendicular to the axial direction of the annular body 11. Preferably, the extension direction of the third flange 123 is parallel to or in the same plane as the rear end surface of the annular body 11.

[0048] The fixed part 12 further comprises a fourth folding edge 124 extending from the third folding edge 123 towards the front end of the annular body 11, and a fixed groove 126 is formed between the second folding edge 122, the third folding edge 123 and the fourth folding edge 124.

[0049] The fourth folding edge 124 has an extension length smaller than the axial length of the annular body 11.

[0050] The front end surface of the annular body 11 is an arc surface concave towards the rear end, and the first folding edge 121 is transitionally connected to the front end surface of the annular body 11.

[0051] The first folding edge 121 comprises a first folding edge segment and a second folding edge segment, the first folding edge segment is curved and extends towards the front end of the annular body 11, and cooperates with the front end surface of the annular body 11 to form an arc surface, and the second folding edge segment extends outward along the radial direction of the annular body 11 from the first folding edge segment.

[0052] Further, the sealing ring 1 further comprises a plug-in part 13 extending from the rear end surface of the annular body 11 towards the rear side of the annular body 11. The included angle between the extension direction of the plug-in part 13 and the extension line of the groove bottom of the mounting groove 125 is obtuse.

[0053] Preferably, the outer diameter of the plug-in part 13 gradually decreases, and the inner diameter of the plug-in part 13 gradually increases. The cross section of the plug-in part 13 is a triangle-like or trapezoid-like shape.

[0054] The plug-in part 13 is an annular plug-in edge, and annular ribs are arranged on the inner and outer circumferential walls of the plug-in part 13.

[0055] The sealing ring 1 further comprises a lip 14 extending from the front end of the annular body 11 towards the inside of the annular body 11. The lip 14 can abut against the inner side of the door body to play a sealing role. Preferably, the annular body 11 is a solid structure.

[0056] Preferably, the lip 14 is arranged extending from the front end surface of the annular body 11 towards the inside of the annular body 11, or extending from the inner circumferential wall of the annular body 11 close to the front end of the annular body 11 towards the inside of the annular body 11.

[0057] The sealing ring 1 further comprises a protection part 15 protruding on the inner circumferential wall of the annular body 11, and the front end surface of the protection part 15 is connected to the root of the lip 14 for protecting the lip 14. The inner diameter of the protection part 15 is greater than the inner diameter of the plug-in part 13.

[0058] The protection part 15 is an annular sealing body, and the outer peripheral wall of the protection part 15 is arranged in close contact with the inner peripheral wall of the annular body 11. The protection part 15 is protruded on the inner peripheral wall of the annular body 11, and the front end is connected with the root of the lip 14 for protecting the lip 14. The protection part 15 is protruded inwardly from the insertion part 13.

[0059] The transition groove 16 recessed inwardly from the sealing ring is arranged at the joint of the inner peripheral wall of the protection part 15 and the rear side wall of the lip 14. The angle between the extension line of the groove bottom of the transition groove 16 and the extension direction of the lip 14 is an acute angle α1. Preferably, the angle α2 between the extension line of the groove bottom of the transition groove 16 and the axis of the protection part 15 is the same as the acute angle α1. The cross section of the transition groove 16 is U-shaped or symmetrically arc-shaped.

[0060] When the door body extrudes the lip 14, the transition groove 16 facilitates the bending of the lip 14 towards the rear end.

[0061] The lip 14 is arranged obliquely from the front end of the annular body 11 to the rear end of the annular body 11.

[0062] The sealing ring 1 is of an integral structure, which facilitates the assembly of the sealing ring 1 on the drying machine and improves the sealing performance of the door body.

[0063] As shown in Figures 4 to 5 The present application also provides a drying machine with the door body sealing ring 1 as described above. The drying machine is a drying machine or a washing-drying integrated machine, and the drying machine in the washing-drying machine body can be arranged at the upper part or the lower part of the washing-drying machine body.

[0064] The drying machine further comprises a front plate 2 with a first opening 21 arranged opposite to the clothes feeding opening (not shown in the figure) of the drying drum, a door body installed on the first opening 21, and a sealing ring 1 located between the inner side of the door body and the first opening 21. The front end surface of the front plate 2 at the outer periphery of the first opening 21 is provided with a clamping part, and the mounting groove 125 of the sealing ring 1 is clamped on the clamping part.

[0065] The sealing ring 1 of the present application is arranged between the first opening 21 of the front plate 2 and the inner side of the door body. The clamping part is arranged at the outer periphery of the first opening 21 on the front end surface of the front plate 2, and the bending structure of the fixing part 12 of the sealing ring 1 is clamped on the clamping part. The sealing ring 1 is installed on the front end surface of the front plate 2, and the outer peripheral part of the sealing ring 1 is fixed. The inner side of the door body extruding the sealing ring when the door of the drying machine is opened can be prevented, and the outer peripheral part of the sealing ring is prevented from turning inside the clothes feeding opening to cause poor sealing of the door body. The sealing performance of the door body of the drying machine is improved.

[0066] As shown in Figure 5As shown, the clamping part is a first flange 22 extending outward from a first opening 21 on the front end face of the front plate 2; the fixing part 12 of the sealing ring 1 is located on the front end face of the outer periphery of the first opening 21 of the front plate 2, and is arranged extending from the first opening 21 to the outer periphery of the front plate 2, and the bending structure of the fixing part 12 matches the first flange 22. The mounting groove 125 of the fixing part 12 is clamped on the first flange 22.

[0067] The present application improves the stability of the sealing ring 1 installed on the front plate 2 by providing the first flange 22 on the first opening 21 of the front end of the front plate 2, and clamping the mounting groove 125 of the sealing ring 1 on the first flange 22. Since the first flange 22 extends to the outer periphery of the first opening 21, it can prevent the sealing ring on the front plate from being turned inside out when the door of the clothes dryer is closed, which can cause the door to be not tightly sealed.

[0068] Preferably, the rear wall of the first flange 22, the front wall of the second flange 122, and the two side walls of the first flange 22 match to form a mounting groove 125 that matches the first flange 22; the third flange 123 matches and is arranged on the front plate 2 of the outer periphery of the first flange 22, and the fourth flange 124 is arranged as a front end flange of the clothes dryer.

[0069] The first flange 22 is arranged obliquely near the front plate 2 of the outer periphery of the first opening 21, and the flange is arranged at an acute angle with the front plate 2 of the outer periphery of the first opening 21, which can prevent the fixing part from being turned inside out towards the clothes throwing opening.

[0070] Preferably, the first flange 22 is a ring-shaped flange.

[0071] The clothes dryer further comprises a front support 3 located on the rear side of the front plate 2 for supporting the front end of the drying drum, and the front support 3 has a second opening 31 opposite to the first opening 21.

[0072] After the sealing ring 1 is installed on the first flange 22 of the front plate 2, a steel wire ring 5 can be installed at the fixing groove 126 of the sealing ring 1, and the fixing part 12 of the sealing ring 1 is installed on the first flange 22 of the front plate 2, which can further fix the sealing ring and prevent the sealing ring from being turned inside out towards the clothes throwing opening. Preferably, the steel wire ring 5 has a certain allowance with the sealing ring 1.

[0073] The front end face of the front plate 2 is provided with a decorative plate, and the inner diameter of the decorative plate is greater than the inner diameter of the first opening 21. The fourth flange 124 abuts against the inner circumferential wall of the decorative plate, which can make the front side of the clothes dryer look beautiful.

[0074] Further, the inner peripheral wall of the second opening 31 of the front support 3 has a connecting portion 32 protruding inwardly from the first opening 21, and the front end surface of the connecting portion 32 is provided with a plug-in groove 321. The plug-in portion 13 of the sealing ring 1 is installed in the plug-in groove 321. Preferably, the connecting portion 32 is an annular boss.

[0075] The plug-in portion 13 of the sealing ring 1 is interference connected with the plug-in groove 321 of the front support 3, which can prevent the sealing ring from falling off the front support, and the door sealing ring can also shield the exposed front end surface of the connecting portion of the front support, which can prevent the end surface of the plastic front support from being abraded by the clothes when the clothes are taken out or put in.

[0076] Annular ribs are arranged on the inner and outer peripheral walls of the plug-in portion 13 of the sealing ring 1, which can improve the installation strength of the plug-in portion 13 and the plug-in groove 321, and can prevent the plug-in portion 13 of the sealing ring 1 from falling off the plug-in groove 321 of the front support 3.

[0077] One part of the sealing ring 1 is clamped on the first flange 22 of the front support 3, another part of the sealing ring 1 is plugged into the plug-in groove 321 of the front support 3, and the inner side of the door body abuts against the front end surface of the sealing ring 1. The sealing ring 1 is arranged between the door body, the first opening 21 of the front plate 2, and the second opening 31 of the front support 3.

[0078] Further, the lip 14 of the sealing ring 1 extends inwardly from the annular body 11 beyond the connecting portion 32. The door body includes an observation window glass 4 protruding inwardly into the drying drum, and the inner side of the observation window glass 4 abuts against the lip 14 to seal the door body.

[0079] The lip 14 is at least partially suspended in the second opening 31, and the lip 14 is located between the connecting portion 32 of the front support 3 and the inner side of the door body. The lip 14 of the present application can not have a hollow structure, and the sealing ring 1 does not have a hollow structure.

[0080] The lip 14 of the sealing ring 1 extends inwardly from the annular body 11 beyond the connecting portion 32, and is suspended in the second opening 31 of the front support 3. When the door of the drying machine is closed, the observation window glass 4 of the inner side of the door body abuts against the lip 14 to seal the door body, and the lip 14 does not have a hollow structure, so it is not necessary to squeeze the air in the sealing ring. The user saves labor when closing the door, which not only ensures the sealing property of the door body, but also improves the user experience.

[0081] Specifically, the observation window glass 4 is a bowl-shaped structure protruding inward, and the opening of the bowl is provided with a second flange 41 extending outward. The second flange 41 abuts on the front end of the sealing ring 1. The edge of the second flange 41 matches and abuts on the arc surface on the front end surface of the sealing ring 1.

[0082] The inclination angle of the lip 14 matches the inclination angle of the second flange 41, and when the door is closed, the second flange 41 presses against the lip 14.

[0083] During the closing of the door, especially when a push-bolt type door lock is used, the door body does not need to squeeze the hollow sealing ring 1 for exhaust, and only needs to overcome the spring force in the door lock. When the user closes the door, only a small force is needed, which improves the user's closing experience. And by providing the first flange 22 on the first opening 21 of the front plate 2, the sealing ring 1 is clamped on the first flange 22, which can prevent the inside of the door body from squeezing the lip during closing, causing the outer periphery of the sealing ring to turn inward, thereby causing displacement of the sealing ring and poor sealing.

[0084] The clothes dryer using the sealing ring 1 of the present application can use a push-bolt type door lock, which has the advantages of small opening force, good appearance of the machine body after opening, and good user experience.

[0085] The connecting portion 32 protrudes from the inner peripheral wall of the annular body 11, the front end of the protection portion 15 is connected to the root of the lip 14, and the rear end of the protection portion 15 abuts on the front end surface of the slot opening of the insertion slot 321 near the inner side. By providing the protection portion, the deformation of the lip during closing can be avoided, the lip contacts the front end surface of the front support, and the wear of the lip can be avoided.

[0086] When the observation window glass 4 presses the lip 14 backward, the transition groove 16 can reduce the resistance when the lip is turned over, facilitating the closing of the door body.

[0087] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above-mentioned technical content without departing from the scope of the technical solution of the present application, and equivalent embodiments with equivalent changes can be obtained. The embodiments in the above examples can be further combined or replaced, but as long as it does not deviate from the technical solution of the present application, any simple modification, equivalent change and modification of the above examples according to the technical essence of the present application are still within the scope of the present application.

Claims

1. A clothes dryer, characterized in that: include: The front panel has a first opening for being positioned opposite to the clothes loading port of the dryer. The front end face of the front panel is provided with a decorative panel, the inner diameter of which is larger than the inner diameter of the first opening. The door body is installed on the first opening; A front support, located on the rear side of the front plate, is used to support the front end of the clothes dryer, and the front support has a second opening opposite to the first opening; A sealing ring is located between the inner side of the door body and the first opening. The sealing ring includes an annular body, a lip, a protective part, a fixing part, and a plugging part. The fixing part includes a first folded edge, a second folded edge, a third folded edge, and a fourth folded edge. The first folded edge extends outward from the outer peripheral wall of the front end of the annular body. The second folded edge extends outward from the first folded edge toward the rear end of the annular body, and the rear wall of the first folded edge and the front wall of the second folded edge form a mounting groove. The third folded edge extends outward from the second folded edge along the radial direction of the annular body. The fourth folded edge extends towards the front end of the annular body, and a fixing groove is formed between the second folded edge, the third folded edge, and the fourth folded edge. A snap-fit ​​portion is provided on the front end face of the front plate around the first opening. The snap-fit ​​portion is a first flange extending outward from the first opening on the front end face of the front plate. The mounting groove of the fixing portion is snapped onto the first flange. The fourth fold edge abuts against the inner peripheral wall of the decorative panel; The inner peripheral wall of the second opening of the front support has a connecting portion that protrudes inward from the first opening. The front end face of the connector is provided with a plug-in groove, and the plug-in part is installed in the plug-in groove; The lip extends inward from the front end of the annular body; The protective part protrudes from the inner peripheral wall of the annular body and abuts against the front end face of the insertion groove of the front support; the front end face of the protective part is connected to the lip and is used to protect the lip.

2. A clothes dryer according to claim 1, characterized in that: The first folded edge includes a first folded edge segment and a second folded edge segment. The first folded edge segment bends and extends from the annular body toward the front end, and cooperates with the front end face of the annular body to form an arc-shaped surface. The second folded edge segment extends outward from the first folded edge segment along the radial direction of the annular body.

3. A clothes dryer according to claim 1 or 2, characterized in that: The angle between the extension line of the bottom of the mounting groove towards the groove opening and the extension direction of the insertion part is an obtuse angle.

4. A clothes dryer according to claim 3, characterized in that: The inner diameter of the protective part is larger than the inner diameter of the plug-in part.

5. A clothes dryer according to claim 4, characterized in that: A concave transition groove is provided at the connection between the inner peripheral wall of the protective part and the rear side wall of the lip. The angle between the extension line of the bottom of the transition groove toward the groove opening and the extension direction of the lip is an acute angle.

6. A clothes dryer according to claim 5, characterized in that: The lip is inclined from the front end of the annular body to the rear end of the annular body.

7. A clothes dryer according to claim 1 or 2, characterized in that: The sealing ring is a one-piece structure.

8. A clothes dryer according to claim 1, characterized in that: The insertion part is an annular insertion edge, and annular ribs are provided on the inner and outer circumferences of the insertion part.

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