WO2018227826A1

WO2018227826A1 - Door sealing rubber strip

Info

Publication number: WO2018227826A1
Application number: PCT/CN2017/105451
Authority: WO
Inventors: 董媛媛; 杨林; 徐伟
Original assignee: 青岛海尔洗碗机有限公司
Priority date: 2017-06-15
Filing date: 2017-10-10
Publication date: 2018-12-20
Also published as: CN109124527A

Abstract

A door sealing rubber strip, comprising a docking part (5) and a sealing part (7) that are integrally formed. Wing pieces (6) are provided on the sides of the docking part (5). The sealing part (7) is mostly L-shaped and comprises a vertical extremity (9), a horizontal extremity (8), and an air pocket (10). The vertical extremity (9) is connected at the bottom part thereof to the top extremity of the docking part (5) and at the top part to an extremity of the horizontal extremity (8). The top surface of the horizontal extremity (8) tilts upward. The door sealing rubber strip is structurally simple and solves the problem of inconsistent compressions brought forth by factors such as arced or flat door body distensions.

Description

Door sealing strip

Technical field

The invention relates to a sealing strip, in particular to a sealing strip which can improve the sealing effect.

Background technique

Dishwashers currently available on the market, for the sealing between the door and the inner liner, usually solve the problem of flat sealing, the compression is not large, and generally can be achieved by sealing through a single constant sealing area, but more and more The more companies have structural and appearance requirements and limitations, the door body usually has a certain degree of curvature. It is precisely because of the existence of the curved structure that the existing sealing structure between the door body and the inner tank is If the mass production consistency is not good, the sealing of the door body is too large, resulting in a tight seal. If the compression amount is too large, the sealing strip will lose its elasticity and cannot be reset, and there is a problem of water leakage and leakage. The washing and drying effect of the bowl machine.

Summary of the invention

The main object of the present invention is to solve the above problems and deficiencies, and to provide a door sealing strip which has a simple structure and can solve the problem of inconsistent compression amount caused by factors such as arc or plane door deformation.

To achieve the above object, the present invention provides a door seal strip, the technical solution of which is:

A door sealing strip comprising an integrally formed plug portion and a sealing portion, the side portion of the plug portion being provided with a fin, the sealing portion being substantially L-shaped, including a vertical end, a horizontal end and an air bag. The bottom of the vertical end is connected to the top end of the plug portion, the top portion is connected to one end of the horizontal end, and the top end of the horizontal end is inclined upward.

Further, a bottom of the first side wall of the sealing portion is connected to a top of the plug portion, and a top portion is inclined toward an outer side of the plug portion.

Further, an angle A between the outer side of the first side wall and the outer side of the insertion portion is an obtuse angle.

Further, a first avoidance area is disposed inside the joint of the first side wall and the second side wall of the sealing portion.

Further, a curved protrusion is disposed on a top surface of the second sidewall of the sealing portion.

Further, a top of the third sidewall of the sealing portion is connected to a second sidewall of the sealing portion, and a bottom of the third sidewall is inclined toward a first sidewall of the sealing portion.

Further, the fourth sidewall of the sealing portion is disposed obliquely, one end and the third sidewall of the sealing portion The bottom is connected, and the other end is connected downwardly and obliquely toward the first side wall of the sealing portion to be connected to the top of the fifth side wall of the sealing portion.

Further, a second avoidance zone is disposed inside the joint of the third side wall of the sealing portion and the fourth side wall of the sealing portion.

Further, a third avoidance zone is disposed on an outer side of the fourth side wall and the fifth side wall of the sealing portion.

Further, an inner side of the joint between the sealing portion and the plug portion is provided with a limiting protrusion.

Further, an angle F between an outer side of the first side wall of the sealing portion and an outer side of the second side wall of the sealing portion is an obtuse angle.

Further, an angle E between the fourth sidewall of the sealing portion and the fifth sidewall of the sealing portion is an obtuse angle.

Further, the angle of the angle F is greater than the angle of the angle E.

In summary, the invention provides a door sealing strip which has the following characteristics compared with the prior art:

1. The horizontal end of the sealing portion is inclined upward, the compression stroke is increased, and the problem of inconsistent compression caused by factors such as deformation of the curved door body is solved;

2. During the stressing process, the rubber strip ensures a sealing problem after the deviation of the position of the door body through a plurality of sealing areas on the strip;

3. Reduce the flash seam between the seal and the liner to reduce the accumulation of residue;

4. Through the structure of the rubber strip, the problem of large closing force after the deviation of the position of the door body is solved.

BRIEF DESCRIPTION OF THE DRAWINGS:

Figure 1: Schematic cross-sectional view of a door seal strip of the present invention;

2 is a schematic structural view of a door sealing strip after installation according to the present invention;

Wherein: the door sealing strip 1, the slot 2, the inner tank 3, the door body 4, the plug portion 5, the fin 6, the sealing portion 7, the horizontal end 8, the vertical end 9, the airbag 10, the first side wall 11 , the second side wall 12, the third side wall 13, the fourth side wall 14, the fifth side wall 15, the first evasion area 16, the second escaping area 17, the third escaping area 18, the limiting protrusion 19, the arc Shaped protrusions 20.

detailed description

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

A door sealing strip 1 comprises an integrally formed plug portion 5 and a sealing portion 7, and the side portion of the plug portion 5 is provided with a fin 6 which is substantially L-shaped, including a vertical end 9 and a horizontal end 8 And the airbag 10, the bottom of the vertical end 9 is connected to the top end of the insertion portion 5, the top is connected to one end of the horizontal end 8, and the top end of the horizontal end 8 is inclined upward.

As shown in Fig. 1, the overall structure of the door sealing strip 1 is integrally formed, as shown in Fig. 1 (all the orientations mentioned later, that is, the orientation shown in Fig. 1), can be divided into the upper parts connected to each other. As shown in FIG. 2, the sealing portion 7 and the lower insertion portion 5 are provided with a slot 2 at a position where the door body 4 is fitted to the inner casing 3, and the insertion portion 5 is disposed in the slot 2, The body width of the plug portion 5 is smaller than the width of the slot 2. The two sides of the plug portion 5 (the orientation shown in FIG. 1 and the same as the same) are respectively provided with the fins 6, which can be one row or more. In the embodiment provided by the present invention, the fins 6 are two rows on each side for filling the gap between the plug portion 5 and the slot 2, and the fins 6 are inclined and the ends are high. At the root, it is easy to install, and at the same time, the installation is tighter, and the socket 2 is prevented from being mishandled. As shown in FIG. 2, the fin 6 and the slot 2 are interference fit, and the plug strength is increased. On the right side of the plug portion 5, on the upper surface of the fin 6, a limiting protrusion 19 is provided. During the installation process of the door sealing strip 1, when the bottom surface of the limiting protrusion 19 is opposite to the top surface of the right side of the slot 2. After the contact, it indicates that the door sealing strip 1 is installed in position, and the limiting protrusion 19 serves as a limiting function on the one hand. On the other hand, after being mounted in position, the limiting protrusion 19 rests on the top surface of the side of the slot 2. Further, it can function to seal the gap between the plug portion 5 and the slot 2, thereby preventing food residue from entering the slot and reducing residue accumulation.

At the top of the insertion portion 5, a sealing portion 7 is integrally formed. As shown in FIG. 1, the sealing portion 7 includes a horizontal end 8 and a vertical end 9, which form a substantially L-shaped structure, and the inside thereof is hollow and formed. The airbag 10 facilitates compression deformation of the sealing portion 7, and the shape of the airbag 10 is substantially similar to the overall shape of the sealing portion 7.

As shown in FIG. 1, the sealing portion 7 includes five sequentially connected side walls, wherein the bottoms of the first side wall 11 and the fifth side wall 15 are connected to the top of the insertion portion 5 to form a vertical end 9, the second side The wall 12, the third side wall 13 and the fourth side wall 14 are sequentially connected to form a horizontal end 8, wherein the other end of the second side wall 12 is connected to the top of the first side wall 11, and the other end of the fourth side wall 14 is The tops of the five side walls 15 are joined such that the five side walls are sequentially joined to form the entire seal portion 7. The top surface of the second side wall 12 is the top surface portion of the horizontal end 8, and the outer side surface of the third side wall 13 is the side portion of the horizontal end 8. When compressed by the door body 4, the top surface of the second side wall 12 is The door body 4 is directly attached, and the outer side of the third side wall 13 is adhered to the door body 4 or the water retaining rib provided on the door body 4 to achieve double sealing.

As shown in FIGS. 1 and 2, the bottom of the first side wall 11 is connected to the top of the insertion portion 5, and is inclined outward from the bottom to the top (the left side shown in FIG. 1), and the top of the first side wall 11 is abutted. Leaning on the left side wall of slot 2, And the highest end of the first side wall 11 is flush with the side wall of the inner tank 3 to prevent food residue from accumulating in the angle between the second side wall 12 and the side wall of the slot 2. As shown in FIG. 2, an angle A is formed between the outer side of the first side wall 11 and the outer side of the left side wall of the insertion portion 5, so that the sealing portion 7 is slightly deformed to the left side, and the sealing portion 7 and the inner liner 3 are tightly closed. The sealing seals the gap between the slot 2 and the insertion portion 5, reduces the flash seam between the door seal strip 1 and the inner liner 3, and reduces the accumulation of residue at the flash joint. In the embodiment provided by the present invention, the angle A is an obtuse angle, and if the angle A is taken between 150° and 179°, in the embodiment provided by the present invention, the range of the angle A is taken. From 160° to 175°, the specific angle value of the angle A is finally determined according to the gap size between the body of the plug portion 5 and the slot 2 and the height difference between the top of the plug portion 5 and the side wall of the liner 3. . As shown in FIG. 1, the thickness of the first side wall 11 gradually increases from top to bottom, and is in a thin and thick state. The upper thin wall is easily compressed and deformed, and the lower thick side wall enables the airbag to be maintained and restored. The shape of 10 ensures that the seal does not deform during long-term use.

On the inner side of the junction of the first side wall 11 and the second side wall 12, a first escaping zone 16 is provided, that is, the first escaping zone 16 is disposed on the side of the airbag 10, as shown in FIG. 2, the first side wall 11 The inner side of the joint with the second side wall 12, that is, the side facing the airbag 10, is subjected to a rounding process to form a first escaping zone 16, and the wall thickness of the side wall strip at the first escaping zone 16 is smaller than other parts. In the embodiment provided by the present invention, the circular or elliptical portion after the rounding process is disposed at the junction of the second side wall 12 and the first side wall 11, or the circular shape after the rounding process. Or the center of the elliptical portion is offset to the right and is located on the second side wall 12. When the door body 4 is pressed against the inner liner 3, when the inner side of the door body 4 presses the top surface of the second side wall 12, the second side wall 12 moves downward, and the first avoidance area 16 can provide no for the second side wall. The disturbed movement space reduces the resilience of the second side wall 12 and increases the compression stroke.

On the outer side of the second side wall 12, that is, the top surface of the horizontal end 8, an arcuate protrusion 20 is provided, and the center point of the arcuate protrusion 20, that is, the highest point is biased toward the second side wall 12 and the third side wall 13 The joint, of course, in actual production, the center point of the curved projection 20 may be disposed near the center point of the second side wall 12, or may be designed as needed. When the door seal strip 1 is compressed, the area C on the door body 4 in Fig. 2 is fitted to the curved projection 20 on the door sealant 1 to form a first sealing area.

The second side wall 12 is inclined upward, gradually rising upward from the joint with the first side wall 11, and the outer side of the joint of the second side wall 12 and the third side wall 13 is rounded and hollowed out to avoid the door sealant. The flying side wall of the strip 1 during extrusion affects the sealing effect of the side wall 1 of the door sealant, and the curved protrusion 20 and the other straight portions of the second side wall 12 smoothly transition, thereby avoiding the accumulation of food residue or dirt. The junction of the shaped protrusion 20 with the other straight portions of the second side wall 12.

The third side wall 13 is inclined to the left from top to bottom, that is, the third side wall 13 is leftward (toward the first side wall 11) from the connection with the second side wall 12 to the connection with the fourth side wall Tilting, at the same time, the thickness of the third side wall 13 is gradually reduced from top to bottom, and the inner side of the joint between the third side wall 13 and the fourth side wall 14 is provided with the same result obtained by the rounding process. The center of the circular area obtained by the rounding process of the second evacuation zone 17 and the second evacuation zone 17 is located substantially at the junction of the third side wall 13 and the fourth side wall 14, or the extension of the joint, third The thickness variation of the side wall 13 and the arrangement of the second relief zone 17 also facilitate compression deformation at the horizontal end, increasing the compression stroke. When the door sealing strip 1 is compressed by the door body 4, the connection between the second side wall 12 and the third side wall 13 will directly abut against the area B on the door body 4 to achieve a seal to form a second sealing area. And when the connection between the second side wall 12 and the third side wall 13 is compressed, the lower end of the third side wall 13 has a tendency to move to the outside, and the corresponding water retaining rib on the door body 4 (in the figure) Not shown), that is, the phase D is compressed and fitted to form a third sealing area.

The fourth side wall 14 and the second side wall 12 are substantially parallel, or the angle between the fourth side wall 14 and the horizontal plane is slightly larger than the angle between the second side wall 12 and the horizontal plane. The rounding process is performed on the outer side of the joint of the fourth side wall 14 and the fifth side wall to form a third avoiding area 18, when the horizontal end 8 of the door sealing strip 1 is pressed by the door body 4, the second side The wall 12, the third side wall 13 and the fourth side wall 14 move downwardly, and the third escape zone 18 provides sufficient movement space for the overall downward movement and reduces the resilience of the sealing strip. One end of the fifth side wall 15 is connected to the fourth side wall 14 and the other end is connected to the top of the insertion portion 5. The fifth side wall 15 is substantially parallel to the first side wall 11 or slightly at an angle to the first side wall 11.

In the embodiment provided by the present invention, the airbag 10 is disposed only in the sealing portion 7, so that the sealing portion 7 has sufficient elasticity, is easily compressed and deformed, and also functions as a heat retaining, the first escaping zone 16 and the second escaping zone. 17 is disposed on the side of the airbag 10 of the respective interconnected side walls, the first escaping zone 16 facilitates downward movement of the second side wall 12, and the second escaping zone 17 facilitates the second side wall 12 and the third side wall 13 When the joint is compressed, the left and downward movement of the third side wall 13 is driven, and at the same time, the downward movement of the fourth side wall 14 is facilitated, and the third escape area is disposed outside the sealing portion 7, which further facilitates Movement of the fourth side wall 14. In practical applications, the position and orientation of the avoidance zone can be set according to the actual structure and the running direction of the different side walls in the compressed state. The airbag is not provided in the insertion portion 5, and the elasticity of the insertion portion 5 is ensured, and the insertion portion 5 is also ensured to have sufficient strength. When the socket 2 is inserted and mounted, it is not deformed, and is not very In the case of a small force, it falls off from the slot 2.

In the embodiment of the present invention, regarding the up, down, left, and right, based on the directions shown in the drawings, In practical applications, depending on the orientation in which the door seal strip is placed, the orientation in the present invention is for reference only and is not specifically limited.

In the embodiment provided by the present invention, each side wall of the sealing portion 7 has different degrees of inclination, which are not in a normal horizontal or vertical state, and the angle between the side walls of each side and the rounding of the avoidance area are hollowed out. The diameter of the treatment and the setting of the center of the circle are not unique. In practical applications, different parameters can be set as needed.

As shown in FIG. 2, the angle F between the first side wall 11 and the second side wall 12, and the angle E between the fourth side wall 14 and the fifth side wall 15 are both obtuse angles to form a horizontal end. In the embodiment provided by the present invention, the angles E and F are in the range of 95°--115°, but the angle F is slightly larger than the angle of the angle E, and the difference is 10 ° or so.

In the embodiment provided by the present invention, the sealing portion 7 includes five sequentially connected side walls, and the rounding or hollowing treatment is performed at the corresponding joints, as shown in FIG. 1 and FIG. 2, the sides can be clearly distinguished. The connection relationship and the connection position of the wall and the side walls. In practical applications, the five side walls can be connected in a plurality of curved lines, and the function points listed in the embodiments of the present invention can be realized, and the angles are not necessarily required. Distinguishing the connection relationship and the connection position of each side wall and each side wall, since each arc has the same function as each side wall in the embodiment provided by the present invention, it is still in the invention Within the scope of protection.

In the foregoing, regarding the structural arrangement of the horizontal end 8, when the door body 4 is closed, the door body 4 compresses the door sealing strip 1, at different positions of the adjacent two side walls of the horizontal end 8, respectively, realizing the area C The sealing of the three areas of the area B, the area D and the door body 4 enables the door body to be sealed at different positions to ensure the sealing effect after the deviation of the position of the door body, wherein the area B, the second side The rounding treatment at the junction of the wall 12 and the third side wall 13 can ensure a line seal between the junction of the second side wall 12 and the third side wall 13 and the door body 4, the area C, the arc convex The central curvature at the highest point of 20 can ensure a line seal between the top of the second side wall 12 and the door body 4. In the area D, after the door seal strip 1 is compressed, the second side wall 12 is compressed, so that the door The inner side of the body 4 is in contact with the outer side of the third side wall 13. After the door is closed, the water retaining rib and the middle and lower ends of the third side wall are compressed and fitted to achieve sealing; the three avoiding areas, that is, three rounded holes are treated. The rearward formed deformation area is avoided, and the shape of the cutout avoidance area is circular or elliptical, and the side The thickness variation setting provides the necessary position and space for the compression movement of the door sealing strip, and reduces the resilience of the sealing strip; the overall structure also solves the problem that the closing force of the door body 4 is large after the deviation of the position of the door body 4; The angle F increases the sealing area of the door sealing strip 1, increases the compression stroke, and solves the problem of inconsistent compression caused by factors such as deformation of the curved door body; when the door sealing strip 1 is installed, the clamp is used Angle A, so that the sealing portion 7 is slightly deformed to the left side, the door sealing strip 1 and the inside The gallbladder 3 is closely fitted to reduce the flash seam between the door seal strip 1 and the liner 3 to prevent the residue from accumulating at the flash joint.

As described above, a similar technical solution can be derived in combination with the presented scheme contents. Any simple modifications, equivalent changes and modifications to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of the technical solutions of the present invention.

Claims

A door sealing strip comprising an integrally formed plug portion and a sealing portion, the side portion of the plug portion being provided with a fin, wherein the sealing portion is substantially L-shaped, including a vertical end and a horizontal end And an air bag, the bottom of the vertical end is connected to the top end of the plug portion, the top portion is connected to one end of the horizontal end, and the top end of the horizontal end is inclined upward.
A door sealing strip according to claim 1, wherein a bottom portion of the first side wall of the sealing portion is connected to a top portion of the insertion portion, and a top portion is inclined toward an outer side of the insertion portion.
A door sealing strip according to claim 2, wherein an angle A between the outer side of the first side wall and the outer side of the insertion portion is an obtuse angle.
A door sealing strip according to claim 1, wherein a first escape zone is provided in the interior of the junction of the first side wall and the second side wall of the sealing portion.
A door sealing strip according to any one of claims 1 to 4, characterized in that the top surface of the second side wall of the sealing portion is provided with an arcuate projection.
A door sealing strip according to claim 5, wherein a top portion of the third side wall of the sealing portion is connected to a second side wall of the sealing portion, and a bottom portion of the third side wall is The first side wall direction of the sealing portion is inclined.
A door sealing strip according to claim 5, wherein the fourth side wall of the sealing portion is inclined, one end is connected to the bottom of the third side wall of the sealing portion, and the other end is downward. After being inclined toward the first side wall of the sealing portion, it is connected to the top of the fifth side wall of the sealing portion.
A door sealing strip according to claim 5, wherein a second escape zone is provided inside the junction of the third side wall of the sealing portion and the fourth side wall of the sealing portion.
A door sealing strip according to claim 8, wherein a third escape zone is provided on an outer side of the fourth side wall and the fifth side wall of the sealing portion.
A door sealing strip according to claim 5, wherein the inner side of the joint between the sealing portion and the plug portion is provided with a limiting protrusion.
A door sealing strip according to claim 5, wherein an angle F between an outer side of the first side wall of the sealing portion and an outer side of the second side wall of the sealing portion is an obtuse angle.
A door sealing strip according to claim 11, wherein an angle E between the fourth side wall of the sealing portion and the fifth side wall of the sealing portion is an obtuse angle.
A door sealing strip according to claim 12, wherein the angle of the angle F is greater than the angle of the angle E.