A waterproof device for a sandwich - type silicone gasket

Abstract

The present invention provides a waterproof device for a sandwich - type silicone gasket, including a rigid material housing with a notch. The rigid material housing with a notch has a first groove surface, a second groove surface, a third groove surface, a fourth groove surface, and a fifth groove surface; an E - type silicone gasket, which is composed of two pairs of quarter - round - corner grooves and a semi - round - corner column. Its left cut surface is matched with the right groove surface of the rigid material housing with a notch, and the right cut surface is matched with the right groove surface of the rigid window panel; a rigid window panel, which is a concave square groove with rounded corners and a countersunk drilling position at the bottom. The concave square groove of the rigid window panel assembles the left fitting surface of the rigid window panel to the right side of the assembly of the gasket and the rigid material housing with a notch, and locks the rigid window panel to the rigid material housing with a notch through the bottom countersunk holes. The present invention adopts the form of a three - layer E - type silicone ring, so that there will be no voids resulting in non - sealing situations.

Description

Technical Field

[0001] The present invention relates to the technical field of electric control boxes, and more specifically, to a waterproof device with a sandwich-type silicone gasket. Background Art

[0002] The existing non-welded and non-integrally formed waterproof connection designs with externally added silicone rings are mainly as follows:

[0003] 1. Waterproofing is achieved through the interference fit between silicone and plastics, silicone and TPU, and silicone and PC hard rubber, such as I-shaped plugs and button waterproof rings. However, for the interference fit waterproofing of I-shaped plugs, since part of the outer side of the plug is exposed, it will inevitably lead to incomplete sealing due to gaps or aging and water seepage due to the exposure of silicone.

[0004] 2. Waterproofing is achieved through the combination of an O-shaped silicone ring and a gasket, and a positive pressure is applied above it, such as the waterproof design of screw holes. However, most O-shaped rubber rings have a small contact surface and are prone to squeezing deformation, resulting in unsealed spaces, leading to poor waterproofing effects or insufficient waterproof levels. In addition, the method of fixing with screw holes will cause large stress at the locked place of the screw holes and small stress at other places, resulting in uneven gaskets or local warping.

[0005] 3. Waterproofing is achieved through the combination of a designed side waterproof convex edge or groove and a silicone ring, and pressure is applied to the side or the silicone ring is locked with screws to ensure the fit between the shells, such as the waterproof design of some snap-on back covers.

[0006] Reference Figure 1 , for the side-pressure or screw-lock type silicone ring waterproofing scheme, usually the side-pressure waterproofing scheme is to design a side-pressure convex edge, place a silicone ring in the groove formed by the side-pressure convex edge, and then clamp the outer cover to form a waterproof ring.

[0007] Reference Figure 2 , the screw-lock type silicone ring waterproofing scheme stipulates the shape of the waterproof silicone ring, that is, on the silicone ring and the shell that needs to be waterproofed, screw holes are drilled at a certain distance to form a sandwich structure of a rigid material outer shell / silicone ring / rigid window panel with notches, and finally screws are locked to form a waterproof ring.

[0008] The background description provided in this article is for the purpose of presenting the context of the present disclosure generally. Unless otherwise indicated herein, the materials described in this section are not prior art to the claims of this application and should not be admitted as prior art by including them in this section. Summary of the Invention

[0009] In view of the above technical problems in the related art, the present invention provides a sandwich-type silicone gasket waterproof device, which includes:

[0010] A housing made of rigid material with notches, the housing made of rigid material with notches having a first notch surface, a second notch surface, a third notch surface, a fourth notch surface, and a fifth notch surface; wherein the first notch surface and the fifth notch surface are the mating surfaces of the housing made of rigid material with notches and the rigid window panel, and the second notch surface, the third notch surface, and the fourth notch surface are the mating surfaces of the housing made of rigid material with notches and the E-shaped silicone gasket;

[0011] An E-shaped silicone gasket, the E-shaped silicone gasket being composed of two pairs of quarter-round notches and a semi-circular corner column, its left cut surface mating with the right notch surface of the housing made of rigid material with notches, and its right cut surface mating with the right notch surface of the rigid window panel;

[0012] A rigid window panel, the rigid window panel being a concave square groove with rounded corners and a countersunk drilling position at the bottom; the concave square groove of the rigid window panel fits the left mating surface of the rigid window panel to the right side of the assembly of the gasket and the housing made of rigid material with notches, and the rigid window panel is locked to the housing made of rigid material with notches through the bottom countersunk holes.

[0013] In a second aspect, another embodiment of the present invention discloses an electric control box, the electric control box being composed of a housing made of rigid material with notches, the housing made of rigid material with notches having a first notch surface, a second notch surface, a third notch surface, a fourth notch surface, and a fifth notch surface; wherein the first notch surface and the fifth notch surface are the mating surfaces of the housing made of rigid material with notches and the rigid window panel, and the second notch surface, the third notch surface, and the fourth notch surface are the mating surfaces of the housing made of rigid material with notches and the E-shaped silicone gasket.

[0014] Specifically, the depth of the first notch surface of the housing made of rigid material with notches is less than the depth of the fifth notch surface and greater than the depths of the second notch surface, the third notch surface, and the fourth notch surface.

[0015] Specifically, the width of the first notch surface of the housing made of rigid material with notches is less than the width of the fifth notch surface.

[0016] In a third aspect, another embodiment of the present invention discloses an E-shaped silicone gasket, the E-shaped silicone gasket being composed of two pairs of quarter-round notches and a semi-circular corner column, its left cut surface mating with the right notch surface of the housing made of rigid material with notches, and its right cut surface mating with the right notch surface of the rigid window panel.

[0017] Specifically, the width of the semi-circular corner column of the E-shaped silicone gasket is greater than the widths of the two pairs of quarter-round notches.

[0018] Fourth aspect, another embodiment of the present invention discloses a rigid window panel, which is a concave square groove with rounded corners and a countersunk drilling position at the bottom; the concave square groove of the rigid window panel assembles the left fitting surface of the rigid window panel to the right side of the assembly of the washer and the rigid material housing with a notch, and locks the rigid window panel to the rigid material housing with a notch through the bottom countersunk holes.

[0019] Specifically, the concave square groove of the rigid window panel has a first rounded corner groove and a first square groove, wherein the first rounded corner groove cooperates with the first groove surface of the rigid material housing with a notch, and the first square groove cooperates with the fifth groove surface of the rigid material housing with a notch.

[0020] Specifically, the rigid window panel is a rigid window panel made of a light-transmitting material.

[0021] Specifically, the width of the first square groove of the concave square groove of the rigid window panel is greater than the width of the first rounded corner groove of the concave square groove of the rigid window panel.

[0022] Fifth aspect, another embodiment of the present invention discloses an assembly method for a waterproof device of a sandwich-type silicone washer, which includes the following steps:

[0023] S1, the rigid material housing with a notch is the part to be assembled, and the E-type silicone washer is placed into the corresponding cut surface groove of the rigid material housing with a notch and tightened.

[0024] S2, the left side surface of the rigid window panel is placed on the right side of the silicone washer. After a reliable fitting surface is formed, the silicone washer is extruded. Screws are used to lock the screw holes of the rigid material housing with a notch and the rigid window panel to form a fixation, and the transverse shear stress is maintained in the rigid material housing with a notch, the silicone washer, and the rigid window panel to form an extruded interference fit.

[0025] The waterproof device of the sandwich-type silicone washer of the present invention has the following advantages: 1. Adopting the form of three-layer E-type silicone rings, increasing the contact area at the fitting part, and at the same time, rounding the stress concentration points during extrusion deformation to increase the stress-bearing area under extrusion, so that there will be no gaps resulting in unsealing;

[0026] 2. Using the inner clamping and embedding method, while adopting the sandwich structure of housing 1 / silicone washer / housing 2, avoiding the design of screw holes for the silicone ring, thus avoiding the uneven stress of the silicone layer caused by the screw locking fixation form, ensuring the integrity of the waterproof line and reducing the deformation of the washer;

[0027] 3. In the form of an internally built silicone ring, the gap caused by the exposure of the silicone is solved. At the same time, due to the extrusion of the housing 1 and the housing 2, the silicone washer itself is extruded and expanded, achieving a waterproof effect similar to an interference fit. At the same time, due to the limitation of the rigid material of the outer ring housing 1 on the shape of the E-shaped washer, the deformation space of the silicone washer itself is reduced and it cannot be deformed, increasing the waterproof reliability. Brief Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a schematic diagram of side pressure waterproofing;

[0030] Figure 2 It is a schematic diagram of the waterproofing of the silicone ring by screw locking;

[0031] Figure 3 It is a schematic diagram of the cross-sectional shape of the housing with a notched rigid material provided by an embodiment of the present invention;

[0032] Figure 4 It is a schematic diagram of the interface structure of the rigid window panel provided by an embodiment of the present invention;

[0033] Figure 5 It is a schematic diagram of the cross-sectional structure of the E-shaped silicone washer provided by an embodiment of the present invention Figure 1 ;

[0034] Figure 6 It is a schematic diagram of the cross-sectional structure of the E-shaped silicone washer provided by an embodiment of the present invention Figure 2 ;

[0035] Figure 7 It is a schematic diagram of the cross-sectional structure of the sandwich-type silicone washer waterproof device provided by an embodiment of the present invention Figure 1 ;

[0036] Figure 8 It is a schematic diagram of the cross-sectional structure of the sandwich-type silicone washer waterproof device provided by an embodiment of the present invention Figure 2 . Detailed Embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0038] Reference Figure 3-8 , this embodiment discloses a sandwich - type silicone gasket waterproof device, which includes:

[0039] A housing made of rigid material with a notch, the housing made of rigid material with a notch has a first groove surface, a second groove surface, a third groove surface, a fourth groove surface, and a fifth groove surface; wherein the first groove surface and the fifth groove surface are the mating surfaces of the housing made of rigid material with a notch and the rigid window panel, and the second groove surface, the third groove surface, and the fourth groove surface are the mating surfaces of the housing made of rigid material with a notch and the E - type silicone gasket;

[0040] Taking the two grooves that form the third groove surface as the reference lines, and measuring the depth of each groove surface to the left of the housing made of rigid material with a notch with these reference lines.

[0041] The depth of the first groove surface of the housing made of rigid material with a notch is less than the depth of the fifth groove surface and greater than the depths of the second groove surface, the third groove surface, and the fourth groove surface.

[0042] The width of the first groove surface of the housing made of rigid material with a notch is less than the width of the fifth groove surface.

[0043] The first groove surface, the second groove surface, the third groove surface, and the fourth groove surface of the housing made of rigid material with a notch are all rounded corners, and the fifth groove surface is square.

[0044] An E - type silicone gasket, the E - type silicone gasket is composed of two pairs of quarter - round - corner grooves and a semi - round - corner column, its left - hand side section mates with the right - hand side groove surface of the housing made of rigid material with a notch, and the right - hand side section mates with the right - hand side groove surface of the rigid window panel;

[0045] The width of the semi - round - corner column of the E - type silicone gasket is greater than the widths of the two pairs of quarter - round - corner grooves.

[0046] A rigid window panel, the rigid window panel is a concave square groove with rounded corners and a countersunk drilling position at the bottom; the concave square groove of the rigid window panel assembles the left - hand side fitting surface of the rigid window panel to the right - hand side of the assembly of the gasket and the housing made of rigid material with a notch, and locks the rigid window panel and the housing made of rigid material with a notch through the bottom countersunk holes;

[0047] The concave square groove of the rigid window panel has a first rounded - corner groove and a first square groove, wherein the first rounded - corner groove mates with the first groove surface of the housing made of rigid material with a notch, and the first square groove mates with the fifth groove surface of the housing made of rigid material with a notch.

[0048] The width of the first square groove of the concave square groove of the rigid window panel is greater than the width of the first rounded - corner groove of the concave square groove of the rigid window panel.

[0049] Specifically, the rigid window panel may be a rigid window panel made of a light-transmitting material, which can facilitate observation of the interior of the electric control box.

[0050] The shell of the rigid material with notches in this embodiment is mainly the assembled surface, and its side surface is composed of a gasket matching groove, a rigid window panel matching groove and a bottom screw hole. It is matched with the waterproof silicone gasket through a three-layer arc structure. When there is lateral shear stress, the left-side fitting surface of the silicone gasket and the right-side fitting surface of the shell of the rigid material with notches are pressed together. The slightly expanded force of the silicone gasket can squeeze the fitting surface of the shell of the rigid material with notches to form an interference fit; the first groove surface at the entrance and the bottom square groove are the matching surfaces of the shell of the rigid material with notches and the rigid window panel. It is locked with screws inside the waterproof structure to avoid drilling holes in the silicone gasket, thereby ensuring the integrity of the silicone gasket waterproof line.

[0051] The rigid window panel is an active assembly surface, and its cross-sectional structure only requires simple cutting and drilling. It consists of a concave square groove with rounded corners and a countersunk drilling position at the bottom. The square cutting structure facilitates the assembly of the left mating surface of the rigid window panel to the right side of the assembly of the gasket and the rigid material shell with the slot, and the rigid window panel and the rigid material shell with the slot are locked through the bottom countersunk hole, and the rounded corners at the upper and lower ends of the square groove facilitate the formation of an interference fit with the right side of the gasket under the action of shear stress.

[0052] The silicone gasket consists of two pairs of quarter-round grooves and a semi-round column. Its left side section cooperates with the right side groove surface of the rigid material shell with the slot, and the right side section cooperates with the right side groove surface of the rigid window panel. Under the action of the lateral shear stress generated by the extrusion of the rigid material shell with the slot and the rigid window panel, the silicone gasket forms an interference fit with the rigid material shell with the slot and the rigid window panel respectively. At the same time, the screw locking of the rigid material shell with the slot and the rigid window panel can allow the silicone gasket to be continuously stressed, filling the middle area of the rigid material shell with the slot and the rigid window panel to form a reliable waterproof line.

[0053] The waterproof device of the sandwich silicone gasket of this embodiment is assembled as follows: the outer shell of the rigid material with the notch is the assembled part, and the outer shell of the rigid material with the notch can be regarded as a fixed part. The silicone gasket is first placed in the corresponding cut surface groove of the outer shell of the rigid material with the notch and tightened, and then the left side of the rigid window panel is placed into the right side of the silicone gasket. After a reliable fitting surface is formed, the silicone gasket is squeezed. At this time, screws are used to lock the screw holes of the outer shell of the rigid material with the notch and the rigid window panel to form a reliable fixation, and the lateral shear stress is maintained in the outer shell of the rigid material with the notch, the silicone gasket, and the rigid window panel to form an extruded interference fit.

[0054] The waterproof device of the sandwich - type silicone gasket in this embodiment has the following advantages: 1. It adopts the form of three - layer E - type silicone rings, increasing the contact area at the fitting part. At the same time, fillet treatment is carried out at the stress concentration points of extrusion deformation to increase the stress - bearing area under extrusion, so as to prevent gaps from occurring and causing unsealing;

[0055] 2. By using the inner - clip embedding method, while adopting the sandwich structure of housing 1 / silicone gasket / housing 2, the design of screw holes for the silicone ring is avoided, thus avoiding the uneven stress on the silicone layer caused by the screw - locking fixing form, ensuring the integrity of the waterproof line and reducing the deformation of the gasket;

[0056] 3. Through the form of an internal silicone ring, the gap caused by the exposure of the silicone is solved. At the same time, due to the extrusion of housing 1 and housing 2, the silicone gasket itself is extruded and expanded, achieving a waterproof effect similar to interference fit. At the same time, due to the limitation of the rigid material of the outer - ring housing 1 on the shape of the E - type gasket, the deformation space of the silicone gasket itself is reduced and it cannot deform, increasing the waterproof reliability.

[0057] The above - mentioned are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sandwich - type silicone gasket waterproof device, comprising: A rigid - material housing with a notch, the rigid - material housing with a notch having a first groove surface, a second groove surface, a third groove surface, a fourth groove surface, and a fifth groove surface; Wherein the first groove surface and the fifth groove surface are the mating surfaces of the rigid - material housing with a notch and the rigid window panel, and the second groove surface, the third groove surface, and the fourth groove surface are the mating surfaces of the rigid - material housing with a notch and the E - type silicone gasket, and the depth of the first groove surface is less than the depth of the fifth groove surface and greater than the depths of the second groove surface, the third groove surface, and the fourth groove surface; An E - type silicone gasket, the E - type silicone gasket being composed of two pairs of quarter - round - corner grooves and a semi - round - corner column, the width of the semi - round - corner column being greater than the widths of the two pairs of quarter - round - corner grooves; Its left - hand cut surface mates with the right - hand groove surface of the rigid - material housing with a notch, and its right - hand cut surface mates with the right - hand groove surface of the rigid window panel; A rigid window panel, the rigid window panel being a concave square groove with rounded corners and a countersunk drilling position at the bottom, the width of the first square groove of the concave square groove being greater than the width of the first rounded - corner groove; the concave square groove of the rigid window panel assembles the left - hand fitting surface of the rigid window panel to the right - hand side of the assembly of the gasket and the rigid - material housing with a notch, and locks the rigid window panel and the rigid - material housing with a notch through the bottom countersunk holes; When the rigid window panel locks the rigid window panel and the rigid - material housing with a notch through the bottom countersunk holes, the E - type silicone ring forms an interference fit with the rigid - material housing with a notch and the rigid window panel respectively under the action of the transverse shear stress generated by the extrusion of the E - type silicone ring between the rigid - material housing with a notch and the rigid window panel.

2. An electric control box, comprising the sandwich-type silicone gasket waterproof device described in claim 1, characterized in that, The electric control box is composed of a rigid - material housing with a notch, the rigid - material housing with a notch having a first groove surface, a second groove surface, a third groove surface, a fourth groove surface, and a fifth groove surface; Wherein the first groove surface and the fifth groove surface are the mating surfaces of the rigid - material housing with a notch and the rigid window panel, and the second groove surface, the third groove surface, and the fourth groove surface are the mating surfaces of the rigid - material housing with a notch and the E - type silicone gasket, and the depth of the first groove surface is less than the depth of the fifth groove surface and greater than the depths of the second groove surface, the third groove surface, and the fourth groove surface.

3. The electric control box according to claim 2, wherein the width of the first groove surface of the housing of the notched rigid material is less than the width of the fifth groove surface.

4. An E-shaped silicone gasket is applied to the sandwich-type silicone gasket waterproof device described in claim 1, and is characterized in that, The E - type silicone gasket is composed of two pairs of quarter - round - corner grooves and a semi - round - corner column, its left - hand cut surface mates with the right - hand groove surface of the rigid - material housing with a notch, and its right - hand cut surface mates with the right - hand groove surface of the rigid window panel, and the width of the semi - round - corner column of the E - type silicone gasket is greater than the widths of the two pairs of quarter - round - corner grooves.

5. A rigid window panel, applied to the sandwich silicone gasket waterproof device described in claim 1, characterized in that, The rigid window panel is a concave square groove with rounded corners and a countersunk drilling position at the bottom; the concave square groove of the rigid window panel assembles the left fitting surface of the rigid window panel to the right side of the assembly of the gasket and the rigid material housing with a notch, and locks the rigid window panel to the rigid material housing with a notch through the bottom countersunk holes. The width of the first square groove of the concave square groove of the rigid window panel is greater than the width of the first rounded corner groove of the concave square groove of the rigid window panel.

6. The rigid window panel according to claim 5, wherein the concave square groove of the rigid window panel has a first rounded corner groove and a first square groove, wherein the first rounded corner groove cooperates with the first groove surface of the rigid material housing with a notch, and the first square groove cooperates with the fifth groove surface of the rigid material housing with a notch.

7. The rigid window panel according to claim 5, wherein the rigid window panel is a rigid window panel made of a light-transmitting material.

8. An assembly method of a waterproof device with a sandwich - type silicone gasket, applied to the sandwich - type silicone gasket waterproof device described in claim 1, characterized in that, It includes the following steps: S1. The rigid material housing with a notch is the part to be assembled. The E-type silicone gasket is placed into the corresponding section groove of the rigid material housing with a notch and tightened. S2. The left side of the rigid window panel is placed on the right side of the silicone gasket. After a reliable fitting surface is formed, the silicone gasket is extruded. Screws are used to lock the screw holes of the rigid material housing with a notch and the rigid window panel to form a fixation, and the transverse shear stress is maintained in the rigid material housing with a notch, the silicone gasket, and the rigid window panel to form an extruded interference fit.

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