A soft and hard co-extruded door seal structure

Abstract

The utility model belongs to the technical field of shoe washing machine, specifically disclose a kind of soft and hard co-extrusion door seal structure, is located on shoe washing machine door frame, including top door seal strip and the side door seal strip being located in top door seal strip both ends, the top door seal strip and two side door seal strip connection form inverted U type structure;The top door seal strip includes first hard PVC edge and first soft PVC sealing element being located on first hard PVC edge.The utility model provides a kind of soft and hard co-extrusion door seal structure, compared with the prior art need in soft door seal bottom punch and with metal pressing plate forced locking mode, this soft and hard co-extrusion door seal structure, using independently hard PVC edge design, can be directly, stably installed on shoe washing machine door frame, greatly simplifies the installation process, reduces the operation difficulty, and fundamentally ensures the long-term installation firmness of door seal structure whole.

Description

Technical Field

[0001] This utility model relates to the field of shoe washing machine technology, and in particular to a soft and hard co-extruded door seal structure. Background Technology

[0002] With the increasing popularity of household shoe washing machines, drawer-type shoe washing machines have gained market favor due to their ease of operation. However, these machines generally lack an effective sealing structure between the drawer door and the main body, leading to significant issues such as water leakage, noise, and energy consumption during the washing process. Unlike traditional drum washing machines, drawer-type shoe washing machines do not have a dedicated door seal mounting groove designed for the main body and door. Existing technology uses soft door seals, which are primarily fixed in the following ways:

[0003] This involves drilling holes at the bottom of the flexible door seal for fixing. This method requires drilling holes at the bottom of the door seal and using a metal pressure plate and screws to forcibly lock the flexible door seal to the shoe washing machine door. This method not only damages the integrity of the door seal, leading to the risk of leakage, but also has a cumbersome installation process, poor installation positioning effect, and is prone to surface tearing due to material fatigue after long-term use.

[0004] In summary, the existing shoe washing machine door seals suffer from poor installation and fixation, and are prone to surface tearing after long-term use. Utility Model Content

[0005] This invention provides a soft and hard co-extruded door seal structure, which can solve the problems of poor installation and fixing effect and easy surface tearing caused by long-term use of the door seal of the shoe washing machine in the prior art.

[0006] A soft and hard co-extruded door seal structure is provided on the door frame of a shoe washing machine, including a top door seal and side door seals at both ends of the top door seal, wherein the top door seal and the two side door seals are connected to form an inverted U-shaped structure;

[0007] The top door seal includes a first rigid PVC edge strip and a first soft PVC sealing element disposed on the first rigid PVC edge strip;

[0008] The side door seal includes a second rigid PVC edge strip and a second soft PVC seal provided on the second rigid PVC edge strip;

[0009] Both the first rigid PVC edge strip and the second rigid PVC edge strip can be detachably installed on the door frame of the shoe washing machine.

[0010] Furthermore, the first rigid PVC edge strip is detachably mounted on the door frame of the shoe washing machine via a snap-fit ​​structure or screw connection.

[0011] Furthermore, the second rigid PVC edge strip is detachably mounted on the door frame of the shoe washing machine via a snap-fit ​​structure or screw connection.

[0012] Furthermore, the first soft PVC seal includes a first sealing airbag and a first connecting strip, wherein the first sealing airbag and the first rigid PVC strip are connected and fixed by the first connecting strip;

[0013] The second soft PVC seal includes a second sealing airbag and a second connecting strip, and the second sealing airbag and the second rigid PVC strip are connected and fixed by the second connecting strip.

[0014] Furthermore, both the first and second connecting strips are provided with sealing outer flanges.

[0015] Furthermore, the first sealing airbag has a first inner flange at the end away from the first connecting strip;

[0016] The second sealing airbag has a second inner flange at the end away from the second connecting strip.

[0017] Furthermore, the cross-section of the second inner edge has a multi-step structure.

[0018] Furthermore, both the first and second sealing airbags have several toothed grooves on their inner sidewalls.

[0019] Furthermore, both the first connecting strip and the second connecting strip are L-shaped.

[0020] Furthermore, both side door seals are fixed to the top door seal by welding.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model provides a soft-hard co-extruded door seal structure, which is installed on the door frame of a shoe washing machine. It consists of a top door seal strip and two side door seal strips. This structure can closely fit the contour of the edge area of ​​the shoe washing machine door frame. Both the top door seal strip and the side door seal strips are composed of rigid PVC edge strips and soft PVC sealing elements. The first rigid PVC edge strip and the second rigid PVC edge strip can be detachably installed on the shoe washing machine door frame. Compared with the existing technology that requires drilling holes at the bottom of the soft door seal and forcibly locking it with a metal pressure plate, this soft-hard co-extruded door seal structure adopts an independent rigid PVC edge strip design, which can be directly and stably installed on the shoe washing machine door frame, greatly simplifying the installation process, reducing the difficulty of operation, and fundamentally ensuring the long-term installation stability of the entire door seal structure.

[0023] 2. This utility model provides a soft-hard co-extruded door seal structure. Both the first and second rigid PVC edge strips are detachably mounted on the shoe washing machine door frame. Compared to existing technologies, where the forced locking of metal pressure plates and screws generates continuous concentrated stress and mechanical damage at the fixing points of the soft door seal (especially at the perforated areas), this design easily leads to surface tearing of the door seal during long-term use, vibration, and material fatigue. This solution, through an integrated soft-hard co-extruded structure of "rigid PVC edge strip + soft PVC seal," completely transfers the fixing stress point to the dedicated rigid PVC edge strip. The soft seal no longer bears direct mechanical locking force, avoiding localized stress concentration and physical damage caused by perforation and pressure plates. This completely eliminates the risk of tearing of the door seal due to the installation method, significantly extending the service life of the door seal.

[0024] 3. This utility model provides a soft and hard co-extruded door seal structure, with an integrated molding design of rigid PVC edge strip and soft PVC seal, which completely separates the stress-bearing functions. That is, the rigid PVC edge strip is used to bear the installation stress, while the soft PVC seal is responsible for flexible sealing, completely avoiding the local stress concentration caused by drilling and pressure plate, thereby solving the tearing risk caused by forced locking of traditional soft door seals and greatly extending their service life. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 A schematic diagram of a soft and hard co-extruded door seal structure provided by this utility model;

[0027] Figure 2 A cross-sectional view of the top door seal strip of a soft-hard co-extruded door seal structure provided by this utility model;

[0028] Figure 3 A cross-sectional view of a side door seal strip of a soft-hard co-extruded door seal structure provided by this utility model.

[0029] Explanation of reference numerals in the attached drawings: 101, top door seal; 102, side door seal; 1, first rigid PVC edge strip; 2, first soft PVC seal; 3, second rigid PVC edge strip; 4, second soft PVC seal; 5, outer sealing flash; 6, first inner flash; 7, second inner flash; 21, first sealing airbag; 22, first connecting edge strip; 41, second sealing airbag; 42, second connecting edge strip. Detailed Implementation

[0030] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.

[0031] like Figures 1 to 3 As shown, the present invention provides a soft and hard co-extruded door seal structure, which is provided on the door frame of a shoe washing machine. Specifically, the door seal structure is provided on the door frame of a drawer-type shoe washing machine, including a top door seal 101 and side door seals 102 provided at both ends of the top door seal 101. The top door seal 101 and the two side door seals 102 are connected to form an inverted U-shaped structure.

[0032] Specifically, the top door seal 101 and the two side door seals 102 are connected to form an inverted U-shaped structure. This inverted U-shaped door seal structure can closely fit the contour of the edge area of ​​the shoe washing machine door frame, that is, it can fit the entire edge area contour of the shoe washing machine door frame without dead angles, eliminating corner leakage points.

[0033] The inverted U-shaped structure design allows the top door seal 101 and the two side door seals 102 to tightly wrap around the top edge of the shoe washing machine door frame. During the repeated pulling in and out movement of the drawer-type shoe washing machine door frame, it can better follow the movement of the shoe washing machine door frame and maintain a continuous fit with the contact surface of the cabinet.

[0034] In addition, good sealing performance can play a certain role in buffering and noise reduction when the door frame of the shoe washing machine is closed, reducing collision noise and improving the user experience;

[0035] The top door seal 101 includes a first rigid PVC edge strip 1 and a first soft PVC seal 2 integrally formed on the first rigid PVC edge strip 1;

[0036] The side door seal 102 includes a second rigid PVC edge strip 3 and a second soft PVC seal 4 integrally formed on the second rigid PVC edge strip 3;

[0037] Both the first rigid PVC edge strip 1 and the second rigid PVC edge strip 3 can be detachably installed on the door frame of the shoe washing machine;

[0038] The first rigid PVC edge strip 1 and the first soft PVC seal 2, the second rigid PVC edge strip 3 and the second soft PVC seal 4 are all integrally molded. Specifically, they are all made by co-extrusion of PVC. This significantly improves the integrity and durability of the top door seal 101 and the side door seal 102, and avoids the soft PVC seal from peeling or deforming due to long-term use.

[0039] Furthermore, in actual production, the width of the second rigid PVC edge strip 3 on the side door seal 102 is greater than the width of the first rigid PVC edge strip 1 on the top door seal 101, and the width of the second soft PVC seal 4 on the side door seal 102 is greater than the width of the first soft PVC seal 2 on the top door seal 101. This arrangement ensures that the top door seal 101 and the side door seal 102 are precisely matched with the top edge area of ​​the shoe washing machine door frame, ensuring that the door seal structure is subjected to uniform force and preventing local sealing failure due to dimensional deviations.

[0040] Both the first rigid PVC edge strip 1 and the second rigid PVC edge strip 3 can be detachably installed on the door frame of the shoe washing machine; the detachable connection method includes, but is not limited to, screw connection. The design of this detachable connection method avoids misalignment during installation and improves assembly efficiency.

[0041] The top door seal 101 and the side door seal 102 are both composed of two types of materials, one hard and one soft. The hard material parts of the first hard PVC edge strip 1 and the second hard PVC edge strip 3 are combined with the soft material parts of the first soft PVC seal 2 and the second soft PVC seal 4. The top door seal 101 and the side door seal 102 have different widths, so they can still be positioned and installed even when there is no door seal installation groove on the door frame of the shoe washing machine. The top door seal 101 and the side door seal 102 can also be welded together to make the door seal structure more integrated. This can meet the specific use scenario of drawer-type shoe washing machines and can also be extended to other scenarios where there is no door seal slot.

[0042] like Figures 1 to 3 As shown, in some embodiments of this utility model, the first rigid PVC edge strip 1 is detachably mounted on the door frame of the shoe washing machine by means of a snap-fit ​​structure or screw connection.

[0043] The second rigid PVC edge strip 3 is detachably installed on the door frame of the shoe washing machine by means of a snap-fit ​​structure or screw connection;

[0044] Specifically, both the first rigid PVC edge strip 1 and the second rigid PVC edge strip 3 can be fixed to the door frame of the shoe washing machine by means of screw connection;

[0045] The rigid material part of this door seal structure (i.e., the first rigid PVC edge strip 1 and the second rigid PVC edge strip 3) can be punched with a special punching tool, and its position can be adjusted so that it can be fixed to the door frame of the shoe washing machine with screws.

[0046] The soft material portion (i.e., the first soft PVC seal 2 and the second soft PVC seal 4) is used for sealing.

[0047] like Figures 1 to 3As shown, in some embodiments of this utility model, the first soft PVC seal 2 includes a first sealing airbag 21 and a first connecting strip 22, and the first sealing airbag 21 and the first hard PVC strip 1 are connected and fixed by the first connecting strip 22.

[0048] The second soft PVC seal 4 includes a second sealing airbag 41 and a second connecting strip 42, wherein the second sealing airbag 41 and the second hard PVC strip 3 are connected and fixed by the second connecting strip 42.

[0049] Both the first soft PVC seal 2 and the second soft PVC seal 4 are composed of a sealing airbag and a connecting strip.

[0050] like Figures 1 to 3 As shown, in some embodiments of this utility model, both the first connecting strip 22 and the second connecting strip 42 are provided with sealing outer flanges 5;

[0051] Specifically, the sealing outer flange 5 on the first connecting strip 22 and the sealing outer flange 5 on the second connecting strip 42 come into contact with the door frame of the shoe washing machine during actual installation, thereby improving the tightness of the connection between the door seal structure and the door frame of the shoe washing machine and enhancing its sealing performance.

[0052] like Figures 1 to 3 As shown, in some embodiments of this utility model, the first sealing airbag 21 has a first inner flange 6 at the end away from the first connecting strip 22;

[0053] The second sealing airbag 41 has a second inner flange 7 at the end away from the second connecting strip 42;

[0054] The cross-section of the second inner flange 7 is a multi-step structure;

[0055] The cross-section of the second inner flange 7 is a multi-step structure, which makes the width of the second inner flange 7 wider, suitable for actual installation and use.

[0056] like Figures 1 to 3 As shown, in some embodiments of this utility model, the inner sidewalls of the first sealing airbag 21 and the second sealing airbag 41 are provided with a plurality of toothed grooves.

[0057] Multiple grooves are provided on the inner wall of the sealed airbag, which has the following advantages:

[0058] First, it enhances anti-slip properties: the toothed groove provides a mechanical interlocking effect similar to "ratchet", which significantly enhances the anti-slip ability inside the airbag, prevents the airbag from moving due to vibration, pressure fluctuation or installation deviation, and ensures the long-term stability and reliability of the seal.

[0059] Second, optimize the contact stress distribution: avoid stress concentration weak points caused by excessive local stretching or deformation of the airbag material, which helps to extend the service life of the airbag.

[0060] like Figures 1 to 3 As shown, in some embodiments of this utility model, both the first connecting strip 22 and the second connecting strip 42 are L-shaped;

[0061] The connecting strip is L-shaped to achieve corner connection, which can both expand the width of the door seal and connect the airbag and the rigid PVC strip.

[0062] Specifically as follows:

[0063] For the first connecting strip 22: the first connecting strip 22 includes a 1# horizontal strip and a 1# vertical strip, the 1# horizontal strip and the 1# vertical strip are perpendicular to each other and form an L-shape, the end of the 1# horizontal strip away from the 1# vertical strip is connected to the first rigid PVC strip 1, and the end of the 1# vertical strip away from the 1# horizontal strip is connected to the first sealing airbag 21;

[0064] For the second connecting strip 42: the second connecting strip 42 includes a 2# horizontal strip and a 2# vertical strip, the 2# horizontal strip and the 2# vertical strip are perpendicular to each other and form an L-shape, the end of the 2# horizontal strip away from the 2# vertical strip is connected to the second rigid PVC strip 3, and the end of the 2# vertical strip away from the 2# horizontal strip is connected to the second sealing airbag 41.

[0065] like Figures 1 to 3 As shown, in some embodiments of this utility model, both side door seals 102 are fixed to the top door seal 101 by welding.

[0066] Specifically, both side door seals 102 are fixed to the top door seal 101 by corner welding;

[0067] That is, the connection between the two side door seals 102 and the top door seal 101 is provided with a 45° beveled surface, and the connection between the top door seal 101 and the two side door seals 102 is also provided with a 45° beveled surface. The two 45° beveled surfaces on the top door seal 101 are welded to the 45° beveled surfaces on the two side door seals 102 respectively, and after welding, a U-shaped door seal structure is formed.

[0068] This utility model provides a soft-hard co-extruded door seal structure, which is installed on the door frame of a shoe washing machine. It consists of a top door seal 101 and two side door seals 102. This structure can closely fit the contour of the edge area of ​​the shoe washing machine door frame. The top door seal 101 and the side door seals 102 are both composed of rigid PVC edge strips and soft PVC seals. The first rigid PVC edge strip 1 and the second rigid PVC edge strip 3 can be detachably installed on the shoe washing machine door frame. Compared with the prior art, which requires drilling holes at the bottom of the soft door seal and forcibly locking it with a metal pressure plate, this soft-hard co-extruded door seal structure adopts an independent rigid PVC edge strip design, which can be directly and stably installed on the shoe washing machine door frame, greatly simplifying the installation process, reducing the difficulty of operation, and fundamentally ensuring the long-term installation stability of the door seal structure.

[0069] The above-disclosed embodiments are only a few specific examples of the present utility model. However, the embodiments of the present utility model are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present utility model.

[0070] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0071] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0072] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A soft-hard co-extruded door seal structure, disposed on the door frame of a shoe washing machine, characterized in that, It includes a top door seal (101) and side door seals (102) located at both ends of the top door seal (101), wherein the top door seal (101) and the two side door seals (102) are connected to form an inverted U-shaped structure; The top door seal (101) includes a first rigid PVC edge strip (1) and a first soft PVC seal (2) integrally formed on the first rigid PVC edge strip (1); The side door seal (102) includes a second rigid PVC edge strip (3) and a second soft PVC seal (4) integrally formed on the second rigid PVC edge strip (3); Both the first rigid PVC edge strip (1) and the second rigid PVC edge strip (3) can be detachably installed on the door frame of the shoe washing machine.

2. The soft and hard co-extruded door seal structure according to claim 1, characterized in that, The first rigid PVC edge strip (1) is detachably mounted on the door frame of the shoe washing machine by means of a snap-fit ​​structure or screw connection.

3. The soft and hard co-extruded door seal structure according to claim 1, characterized in that, The second rigid PVC edge strip (3) is detachably mounted on the door frame of the shoe washing machine by means of a snap-fit ​​structure or screw connection.

4. The soft and hard co-extruded door seal structure according to claim 1, characterized in that, The first soft PVC seal (2) includes a first sealing airbag (21) and a first connecting strip (22), and the first sealing airbag (21) and the first hard PVC strip (1) are connected and fixed by the first connecting strip (22); The second soft PVC seal (4) includes a second sealing airbag (41) and a second connecting strip (42), and the second sealing airbag (41) and the second hard PVC strip (3) are connected and fixed by the second connecting strip (42).

5. The soft and hard co-extruded door seal structure according to claim 4, characterized in that, Both the first connecting strip (22) and the second connecting strip (42) are provided with sealing outer flanges (5).

6. The soft and hard co-extruded door seal structure according to claim 4, characterized in that, The first sealing airbag (21) has a first inner flange (6) at one end away from the first connecting strip (22); The second sealing airbag (41) has a second inner flange (7) at one end away from the second connecting strip (42).

7. A soft and hard co-extruded door seal structure according to claim 6, characterized in that, The cross-section of the second inner edge (7) is a multi-step structure.

8. A soft and hard co-extruded door seal structure according to claim 4, characterized in that, The inner walls of the first sealing airbag (21) and the second sealing airbag (41) are provided with several toothed grooves.

9. A soft and hard co-extruded door seal structure according to claim 4, characterized in that, Both the first connecting strip (22) and the second connecting strip (42) are L-shaped.

10. A soft and hard co-extruded door seal structure according to claim 1, characterized in that, Both side door seals (102) are fixed to the top door seal (101) by welding.

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