Sealing components, exhaust devices and dishwashers

Abstract

The present invention relates to a sealing component, an exhaust device and a dishwasher. The sealing component includes a hard support and a soft sealing component. The hard support is provided with a connecting through hole that passes through the inner side and the outer side. The soft sealing component includes a connecting portion located in the middle and a sealing portion located around. The connecting portion is stacked on the outer side of the hard support, and the sealing portion is stacked on the inner side of the hard support. The sealing portion can abut against a shell that forms an air inlet to seal the air inlet. The connecting portion and the sealing portion are integrally formed on the hard support through the connecting through hole. Thereby, the connection reliability between the two is better, the possibility of loosening is lower, and the service life is longer. In the washing stage, the hard support can provide sufficient supporting force for the sealing portion, so that the sealing portion has sufficient pressure to press against the shell. The soft sealing portion can better fit and seal with the shell according to its own soft characteristics, thereby improving the sealing reliability in the washing stage as a whole.

Description

Technical Field

[0001] The invention relates to the field of household electrical appliances, and in particular to a sealing component, an exhaust device and a dishwasher. Background Art

[0002] With the continuous updating of dishwashers, after completing the washing process, a drying process is also required to meet user needs and improve user experience. For this reason, the inner cavity of the dishwasher exists in two states: sealed and open. During the washing stage, in order to prevent water in the inner cavity from leaking out, the inner cavity of the dishwasher needs to be in a sealed state. During the drying stage, in order to discharge the water seal in the inner cavity, the inner cavity of the dishwasher needs to be in an open state. Based on this, an exhaust device is generally provided in the dishwasher to achieve the switching of the inner cavity between the two states when the dishwasher is in different stages. However, the service life of the general exhaust device is short and the sealing reliability is poor. Summary of the invention

[0003] Based on this, it is necessary to provide a sealing assembly, an exhaust device and a dishwasher to improve their sealing reliability and service life.

[0004] A sealing assembly includes a sealing stopper, which is arranged at the air inlet of a shell, and the sealing stopper includes a hard support member and a soft sealing member, the hardness of the hard support member is greater than the hardness of the soft sealing member, the hard support member is provided with a connecting through hole passing through the inner side surface and the outer side surface, the soft sealing member includes a connecting portion located in the middle and a sealing portion located around, the connecting portion is stacked on the outer side surface of the hard support member, the sealing portion is stacked on the inner side surface of the hard support member, the sealing portion can abut against the shell forming the air inlet to seal the air inlet, and the connecting portion and the sealing portion are integrally formed on the hard support member through the connecting through hole.

[0005] The above scheme provides a sealing assembly, wherein the sealing stopper arranged at the air inlet is composed of a hard support member and a soft seal member with different hardnesses. The connecting portion and the sealing portion of the soft seal member are integrally formed on the outer side and inner side of the hard support member through the connecting through hole arranged on the hard support member, so that the hard support member and the soft seal member are integrally formed, the connection reliability between the two is better, the possibility of loosening is lower, and the service life is longer. Therefore, in the washing stage, based on the high hardness of the hard support member, sufficient supporting force can be provided for the sealing portion located on the inner side of the hard support member, so that the sealing portion has sufficient pressure to press against the shell. The soft seal member can be well fitted and sealed with the shell according to its own soft characteristics. Thereby, the sealing reliability of the sealing stopper to the air inlet in the washing stage is improved as a whole. In the drying stage, the sealing stopper is spaced from the air inlet on the shell, so that the inner cavity of the dishwasher is connected to the outside world, thereby discharging the humid air in the inner cavity of the dishwasher.

[0006] In one of the embodiments, there are a plurality of connecting through holes, and the plurality of connecting through holes are spaced apart and distributed in the circumferential direction of the hard support member to form a circle of connecting positions, and the sealing parts are distributed on the outer periphery of the connecting positions.

[0007] In one embodiment, the hard support member is a disc-shaped structure, and an annular groove is provided on the inner side surface of the hard support member at a position for forming the sealing portion, the connecting through hole passes through the annular groove and the outer side surface of the hard support member, and the sealing portion is integrally formed in the annular groove.

[0008] In one embodiment, the sealing assembly also includes a driving member for driving the sealing stopper to move forward and backward, a mounting hole is provided on the connecting portion of the soft sealing member, a contact depression is provided at a position corresponding to the mounting hole on the hard supporting member, a push-pull rod of the driving member can pass through the mounting hole and contact the contact depression, a pull-back stop buckle is provided on the side wall of the mounting hole, a mating depression is provided at a position corresponding to the pull-back stop buckle on the push-pull rod, and the pull-back stop buckle protrudes from the mating depression.

[0009] In one embodiment, the front end of the push-pull rod is a tapered guide structure, and the radius of the front end gradually decreases in a direction away from the rear end of the push-pull rod.

[0010] In one embodiment, the sealing assembly further includes a reinforcement auxiliary part, which is sleeved on one end of the push-pull rod provided on the driving part, and the relative position of the reinforcement auxiliary part and the push-pull rod in the axial direction is fixed, and the push-pull rod passes through the reinforcement auxiliary part and is installed in cooperation with the sealing stopper, and an abutment protrusion is provided on the connecting part, and the abutment protrusion abuts against the reinforcement auxiliary part.

[0011] In one embodiment, the width of the matching recess in the axial direction of the push-pull rod is greater than the width of the pull-back stop buckle in the axial direction of the push-pull rod.

[0012] An exhaust device comprises a shell and the above-mentioned sealing assembly, wherein the shell is provided with an air inlet, and the sealing baffle is arranged corresponding to the air inlet.

[0013] The above scheme provides an exhaust device, which provides a sealing baffle as described in any of the above embodiments at the air inlet, so that the sealing reliability of the air inlet during the washing stage is higher, and the connection reliability between the soft seal and the hard support component connected in one piece is better, the possibility of loosening is lower, and the service life is longer.

[0014] In one of the embodiments, the shell includes a front shell, a rear shell and a conducting shell forming an exhaust passage, the air inlet is arranged on the front shell, the rear shell is arranged opposite to the front shell to form an installation space connected to the exhaust passage, and the sealing assembly is installed in the installation space.

[0015] In one of the embodiments, a soft abutment portion is provided on the front shell at a position for abutting against the sealing portion, and the sealing portion can abut against the soft abutment portion.

[0016] A dishwasher comprises a dishwasher inner tank and the above-mentioned exhaust device, wherein the dishwasher inner tank forms an inner cavity which is communicated with the air inlet.

[0017] The above scheme provides a dishwasher, which is connected to the inner cavity by arranging the exhaust device described in any of the above embodiments, and uses the sealing block in the exhaust device to switch the inner cavity between the sealed and open states, so as to meet the needs of the washing and drying stages respectively. The sealing block makes the sealing reliability of the inner cavity better during the washing stage, and the connection reliability between the integrally formed soft seal and the hard support is better, the possibility of loosening is lower, and the service life is longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a sealing stopper in the sealing assembly described in this embodiment;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the sealing stopper after the soft sealing member is hidden;

[0020] Figure 3 is a cross-sectional view of the sealing assembly of this embodiment in a washing state;

[0021] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0022] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0023] Figure 6 It is a schematic diagram of the structure of the exhaust device described in this embodiment.

[0024] Description of reference numerals:

[0025] 10. Sealing assembly; 11. Sealing stopper; 111. Hard supporting member; 1111. Connecting through hole; 1112. Annular groove; 112. Soft sealing member; 1121. Connecting portion; 1122. Sealing portion; 1123. Pull-back stopper; 1124. Abutting protrusion; 12. Driving member; 121. Push-pull rod; 1211. Matching depression; 13. Reinforcement auxiliary member; 20. Exhaust device; 21. Front shell; 211. Air inlet; 212. Soft abutting portion; 22. Rear shell; 23. Conductive shell. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific implementation disclosed below.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The various technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-described embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] like Figure 1 and Figure 2 As shown, in one embodiment, a sealing assembly 10 is provided, comprising a sealing stopper 11, the sealing stopper 11 being arranged at the air inlet 211 of the housing, the sealing stopper 11 comprising a hard support member 111 and a soft sealing member 112, the hardness of the hard support member 111 being greater than the hardness of the soft sealing member 112. Figures 2 to 4As shown, the hard support member 111 is provided with a connecting through hole 1111 penetrating the inner side and the outer side, and the soft sealing member 112 includes a connecting portion 1121 located in the middle and sealing portions 1122 located around, the connecting portion 1121 is stacked on the outer side of the hard support member 111, and the sealing portion 1122 is stacked on the inner side of the hard support member 111. Here, the inner side of the hard support member 111 refers to the side of the hard support member 111 that is opposite to the air inlet 211, and the outer side refers to the side opposite to the inner side.

[0030] The sealing portion 1122 can abut against the shell forming the air inlet 211 to seal the air inlet 211 , and the connecting portion 1121 and the sealing portion 1122 are integrally formed on the hard support member 111 through the connecting through hole 1111 .

[0031] The sealing stopper 11 provided at the air inlet 211 is composed of a hard support member 111 with different hardness and a soft seal 112. The connecting portion 1121 and the sealing portion 1122 of the soft seal 112 are integrally formed on the outer side and the inner side of the hard support member 111 through the connecting through hole 1111 provided on the hard support member 111, so that the hard support member 111 and the soft seal 112 are integrally formed, the connection reliability between the two is better, the possibility of loosening is lower, and the service life is longer.

[0032] During the washing stage, Figure 3 and Figure 4 As shown, based on the high hardness of the hard support member 111, sufficient support force can be provided to the sealing portion 1122 located on the inner side of the hard support member 111, so that the sealing portion 1122 has sufficient pressure to press against the housing. Figure 3 and Figure 4 As shown, the soft seal 112 can better fit and seal with the shell due to its relatively soft characteristics. This improves the overall sealing reliability of the seal baffle 11 to the air inlet 211 during the washing stage. During the drying stage, the seal baffle 11 is spaced from the air inlet 211 on the shell, so that the inner cavity of the dishwasher is connected to the outside, thereby discharging the humid air in the inner cavity of the dishwasher. Specifically, during the drying stage, the seal baffle 11 is as follows Figure 3 In the state shown, it moves to the right and is spaced apart from the air inlet 211 on the shell, so that the inner cavity of the dishwasher is connected to the outside.

[0033] Further, in one embodiment, if Figure 2As shown, there are multiple connecting through holes 1111, and the multiple connecting through holes 1111 are spaced apart and distributed in the circumferential direction of the hard support member 111 to form a circle of connecting positions, and the sealing parts 1122 are distributed on the periphery of the connecting positions.

[0034] During the production process, the material used to form the soft seal 112 is connected to the inner side and outer side of the hard support 111 through the connecting through hole 1111. The provision of multiple connecting through holes 1111 makes the soft seal 112 more evenly formed and the molding speed faster during the production process, and the sealing performance of the surface of the sealing part 1122 that is used to abut against the shell is better.

[0035] Optionally, when the shape of the air inlet 211 changes, the shape of the sealing stopper 11 changes accordingly, and the distribution of the connecting through holes 1111 also changes according to the deformation of the sealing stopper 11. Of course, preferably, a plurality of connecting through holes 1111 are spaced apart in the circumferential direction of the hard support member 111 to form a circle of connecting positions corresponding to the air inlet 211, and the sealing portion 1122 is formed on the periphery of the connecting positions.

[0036] Specifically, Figures 2 to 4 As shown, in one embodiment, the hard support member 111 is a disc-shaped structure, and an annular groove 1112 is provided on the inner side surface of the hard support member 111 at a position for forming the sealing portion 1122, the connecting through hole 1111 passes through the annular groove 1112 and the outer side surface of the hard support member 111, and the sealing portion 1122 is integrally formed in the annular groove 1112.

[0037] The provision of the annular groove 1112 not only provides a shaping basis for the molding of the sealing portion 1122, but also during low-pressure sealing, the annular groove 1112 provided on the hard support member 111 enhances the ability of the sealing portion 1122 to resist deformation, thereby further enhancing the reliability of the low-pressure sealing.

[0038] When switching between the washing state and the drying state, the sealing stopper 11 can be driven to move forward and backward by the driving member 12. The structure of the driving member 12 is not specifically limited here, as long as it can drive the sealing stopper 11 to move to achieve the switching between the above two states.

[0039] Furthermore, if Figure 3 and Figure 5As shown, in one embodiment, a mounting hole is provided on the connecting portion 1121 of the soft seal 112, and a contact recess is provided at a position corresponding to the mounting hole on the hard support 111, and the push-pull rod 121 of the drive member 12 can pass through the mounting hole and contact the contact recess. A pull-back stop buckle 1123 is provided on the side wall of the mounting hole, and a matching recess 1211 is provided at a position corresponding to the pull-back stop buckle 1123 on the push-pull rod 121, and the pull-back stop buckle 1123 protrudes from the matching recess 1211.

[0040] Since the soft seal 112 is made of a relatively soft material, the installation hole is set here by taking advantage of its soft characteristics, and the pull-back stop buckle 1123 is set on the side wall of the installation hole, so that the push-pull rod 121 provided with the matching recess 1211 can be installed in the installation hole under the action of external force until the front end of the push-pull rod 121 abuts against the abutting recess and is installed in place. After being installed in place, the previously squeezed pull-back stop buckle 1123 is just aligned with the matching recess 1211, and the pull-back stop buckle 1123 protrudes from the matching recess 1211, thereby realizing the installation between the push-pull rod 121 and the sealing stop 11.

[0041] During the washing stage, Figure 3 and Figure 5 As shown, the push-pull rod 121 of the driving member 12 moves toward the direction close to the air inlet 211, so that the sealing member 11 presses against the housing forming the air inlet 211, completing the sealing process. At this time, the front end of the push-pull rod 121 is tightly pressed against the abutment recess.

[0042] In the drying stage, the push-pull rod 121 moves away from the air inlet 211, and under the cooperation of the pull-back stop buckle 1123 and the matching recess 1211, the sealing stopper 1123 is driven to move toward the air inlet 211. Figure 3 The rightward movement in the viewing angle shown makes the air inlet 211 communicate with the outside.

[0043] Furthermore, if Figure 5 As shown, in one embodiment, the front end of the push-pull rod 121 is a conical guide structure, and the radius of the front end gradually decreases in the direction away from the rear end of the push-pull rod 121.

[0044] The tapered guide structure at the front end can provide a guide for the installation process, because the softer nature of the connecting portion 1121 is required for installation, and the tapered guide structure can make the installation process faster and also make it easier to squeeze the pullback buckle 1123.

[0045] Furthermore, if Figure 3 and Figure 5As shown, in one embodiment, the sealing assembly 10 further includes a reinforcement auxiliary member 13, which is sleeved on one end of the driving member 12 provided with the push-pull rod 121, and the relative positions of the reinforcement auxiliary member 13 and the push-pull rod 121 in the axial direction are fixed. The push-pull rod 121 passes through the reinforcement auxiliary member 13 and is installed in cooperation with the sealing stopper 11, and the connecting portion 1121 is provided with an abutting protrusion 1124, and the abutting protrusion 1124 abuts against the reinforcement auxiliary member 13.

[0046] The abutment between the reinforcement auxiliary member 13 and the abutment protrusion 1124 makes the fixation between the push-pull rod 121 and the sealing block 11 more reliable, thereby making the switching process between the washing stage and the drying stage more agile. That is, the reaction speed of the sealing block 11 moving with the push-pull rod 121 is faster.

[0047] Furthermore, in one embodiment, the width of the matching recess 1211 in the axial direction of the push-pull rod 121 is greater than the width of the pull-back stop buckle 1123 in the axial direction of the push-pull rod 121. Thus, the pull-back stop buckle 1123 can reliably protrude into the matching recess 1211, achieving the effect of installation and positioning. At the same time, the abutment between the reinforcement auxiliary member 13 and the abutment protrusion 1124 can ensure the synchronization of the movement of the push-pull rod 121 and the sealing stopper 11.

[0048] Further, in another embodiment, if Figure 6 As shown, an exhaust device 20 is provided, comprising a housing and the above-mentioned sealing assembly 10, as shown in FIG. Figure 3 As shown, an air inlet 211 is provided on the shell, and the sealing block 11 is arranged corresponding to the air inlet 211 .

[0049] The exhaust device 20 provided by the above scheme, by setting the sealing baffle 11 described in any of the above embodiments at the air inlet 211, makes the sealing reliability of the air inlet 211 higher during the washing stage, and the connection reliability between the soft sealing component 112 and the hard support component 111 connected in one piece is better, the possibility of loosening is lower, and the service life is longer.

[0050] Specifically, in one embodiment, Figure 3 and Figure 6 As shown, the shell includes a front shell 21, a rear shell 22 and a conducting shell 23 forming an exhaust passage, the air inlet 211 is arranged on the front shell 21, the rear shell 22 is arranged opposite to the front shell 21 to form an installation space connected to the exhaust passage, and the sealing assembly 10 is installed in the installation space.

[0051] The movement process of the sealing stopper 11 is relative to the front shell 21. Figure 3 As shown, the driving member 12 is fixed on the rear shell 22, and the push-pull rod 121 of the driving member 12 pushes the sealing member 11 to move forward and backward relative to the front shell 21. In the drying stage, the push-pull rod 121 pulls the sealing member 11 backward, so that the sealing member 11 is spaced apart from the front shell 21, and the air inlet 211 is connected to the exhaust passage, and the exhaust passage discharges various humid air in the inner cavity to help complete the drying process.

[0052] In order to further improve the sealing reliability between the sealing stopper 11 and the front shell 21, as shown in FIG. Figure 4 As shown, in one embodiment, a soft abutting portion 212 is provided on the front shell 21 at a position for abutting against the sealing portion 1122 , and the sealing portion 1122 can abut against the soft abutting portion 212 .

[0053] Furthermore, in another embodiment, a dishwasher is provided, including a dishwasher inner tank and the exhaust device 20 described above, wherein the dishwasher inner tank forms an inner cavity, and the inner cavity is communicated with the air inlet 211 .

[0054] The dishwasher provided by the above scheme is connected to the inner cavity by arranging the exhaust device 20 described in any of the above embodiments, and uses the sealing blocker 11 in the exhaust device 20 to switch the inner cavity between the sealed and open states, so as to meet the needs of the washing and drying stages respectively. The sealing blocker 11 makes the sealing reliability of the inner cavity better during the washing stage, and the connection reliability between the integrally molded soft seal 112 and the hard support 111 is better, the possibility of loosening is lower, and the service life is longer.

[0055] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A sealing assembly, characterized in that: It includes a sealing stopper, which is arranged at the air inlet of the shell, and the sealing stopper includes a hard support member and a soft sealing member. The hardness of the hard support member is greater than that of the soft sealing member. The hard support member is provided with a connecting through hole that passes through the inner side surface and the outer side surface. The soft sealing member includes a connecting part located in the middle and a sealing part located around. The connecting part is stacked on the outer side surface of the hard support member, and the sealing part is stacked on the inner side surface of the hard support member. The sealing part can abut against the shell forming the air inlet to seal the air inlet, and the connecting part and the sealing part are integrally formed on the hard support member through the connecting through hole.

2. The sealing assembly according to claim 1, characterized in that: There are a plurality of connecting through holes, and the plurality of connecting through holes are spaced apart and distributed in the circumferential direction of the hard support member to form a circle of connecting positions, and the sealing parts are distributed on the periphery of the connecting positions.

3. The sealing assembly according to claim 2, characterized in that: The hard support member is a disc-shaped structure, and an annular groove is provided on the inner side surface of the hard support member at a position for forming the sealing portion, the connecting through hole passes through the annular groove and the outer side surface of the hard support member, and the sealing portion is integrally formed in the annular groove.

4. The sealing assembly according to any one of claims 1 to 3, characterized in that: It also includes a driving member for driving the sealing stopper to move forward and backward, a mounting hole is provided on the connecting part of the soft sealing member, a contact depression is provided at a position corresponding to the mounting hole on the hard supporting member, a push-pull rod of the driving member can pass through the mounting hole and contact the contact depression, a pull-back stop buckle is provided on the side wall of the mounting hole, a matching depression is provided at a position corresponding to the pull-back stop buckle on the push-pull rod, and the pull-back stop buckle protrudes from the matching depression.

5. The sealing assembly according to claim 4, characterized in that: The front end of the push-pull rod is a tapered guide structure, and the radius of the front end gradually decreases in a direction away from the rear end of the push-pull rod.

6. The sealing assembly according to claim 4, characterized in that: It also includes a reinforcement auxiliary part, which is sleeved on one end of the push-pull rod provided on the driving part, and the relative position of the reinforcement auxiliary part and the push-pull rod in the axial direction is fixed, the push-pull rod passes through the reinforcement auxiliary part and is installed in cooperation with the sealing stopper, and an abutment protrusion is provided on the connecting part, and the abutment protrusion abuts against the reinforcement auxiliary part.

7. The sealing assembly according to claim 6, characterized in that The width of the matching recess in the axial direction of the push-pull rod is greater than the width of the pull-back stop buckle in the axial direction of the push-pull rod.

8. An exhaust device, characterized in that: It comprises a shell and a sealing assembly according to any one of claims 1 to 7, wherein the shell is provided with an air inlet, and the sealing baffle is arranged corresponding to the air inlet.

9. The exhaust device according to claim 8, characterized in that: The shell includes a front shell, a rear shell and a conducting shell forming an exhaust passage, the air inlet is arranged on the front shell, the rear shell is arranged opposite to the front shell to form an installation space connected to the exhaust passage, and the sealing assembly is installed in the installation space.

10. The exhaust device according to claim 9, characterized in that: A soft abutment portion is provided on the front shell at a position for abutting against the sealing portion, and the sealing portion can abut against the soft abutment portion.

11. A dishwasher, characterized in that: It comprises a dishwasher inner tank and the exhaust device according to any one of claims 8 to 10, wherein the dishwasher inner tank forms an inner cavity, and the inner cavity is communicated with the air inlet.

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