CN114980630A

CN114980630A - Sealing adapter box, grating screen and sealing element forming method

Info

Publication number: CN114980630A
Application number: CN202210355983.5A
Authority: CN
Inventors: 吴柏春; 李洪峰; 何芳; 刘斌斌; 黄励彬
Original assignee: Shenzhen Zhoumingchuang Intelligent Technology Co ltd
Current assignee: Shenzhen Zhoumingchuang Intelligent Technology Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-08-30
Anticipated expiration: 2042-04-06
Also published as: CN114980630B

Abstract

The invention relates to a sealing adapter box, a grating screen and a sealing element forming method, which comprises a shell, a circuit board, an adapter piece, a fixed seat and a sealing element, wherein a containing cavity and a communicating hole are formed in the shell, the circuit board is arranged in the containing cavity, the fixed seat is used for bearing an electric appliance, the fixed seat is provided with the communicating hole, the containing cavity, the communicating groove and the communicating hole are sequentially communicated to form a forming space, the adapter piece is arranged in the communicating hole, one end of the adapter piece is used for being connected with the electric appliance, the other end of the adapter piece is connected with the circuit board, the sealing element is filled in the forming space, and the adapter piece and the circuit board are wrapped by the sealing element. So set up, can avoid liquid and adaptor and circuit board contact, improved the waterproof nature of sealed adaptor box. The grid screen includes above-mentioned sealed adapter box, has good waterproof nature. The sealing element forming method can obtain the sealing element applied to the sealing adapter box, and can improve the waterproofness of the sealing adapter box.

Description

Sealing adapter box, grating screen and sealing element forming method

Technical Field

The invention relates to the technical field of display, in particular to a sealing adapter box, a lamp and a sealing element forming method.

Background

An LED grid screen is a display screen for displaying various information such as characters, graphics, images, animation, quotations, videos, and video signals by controlling the display mode of a semiconductor light emitting diode.

The LED grille screen is mainly used for the brightening effect of outdoor advertisement screens of buildings or buildings at present. Since the working environment of the LED grid screen is usually outdoors, the waterproof property of the LED grid screen is one of the key factors affecting the performance and the lifetime of the LED grid screen.

In the prior art, a sealing ring is usually arranged at the joint of a plug or a sealing cover of a power control box of an LED and a shell. However, for some large power control boxes, the elastic deformation capability of the sealing ring is not enough, and a good sealing effect cannot be achieved.

Disclosure of Invention

In view of the above, it is desirable to provide a sealing adapter box, a grid screen and a method for forming a sealing member, which address the problem of water resistance of the grid screen.

The utility model provides a sealed switching box for use electrical apparatus and the sealed switching of power, sealed switching box includes casing, circuit board, adaptor, fixing base and sealing member, seted up on the casing and held chamber and intercommunicating pore, the circuit board is located hold the intracavity, the fixing base is used for bearing with electrical apparatus, the intercommunicating pore has been seted up on the fixing base, hold the chamber the intercommunication groove with the intercommunicating pore communicates in proper order and forms the shaping space, the adaptor is located in the intercommunicating pore, the one end of adaptor be used for with electrical apparatus is connected, the other end of adaptor with the circuit board is connected, the sealing member fill in the shaping space, the sealing member parcel adaptor and circuit board.

In one embodiment, the housing includes a bottom wall and a side wall connected to a periphery of the bottom wall, the communication groove is formed in the bottom wall, the circuit board is connected to the side wall, and one of the fixing base, the housing and the circuit board is provided with an introduction hole for communicating the communication groove with the outside.

In one embodiment, the sealing adapter box further comprises a connecting piece, the introduction hole is formed in the circuit board, the connecting piece penetrates through the introduction hole, one end of the connecting piece is connected with the circuit board, the other end of the connecting piece is connected with the bottom wall, and an injection hole penetrating through the connecting piece is formed in the connecting piece.

In one embodiment, the connecting member has at least two injection holes formed therein, and the at least two injection holes are all penetrating through the connecting member.

In one embodiment, the connecting piece comprises a bottom plate, and a buckling part and a supporting part which are connected with the bottom plate and extend in the direction away from the bottom plate, the bottom plate is located in the accommodating cavity and abutted to the circuit board, the buckling part and the supporting part penetrate through the communicating groove, the buckling part and the supporting part are arranged to surround to form the injection hole, the supporting part can be abutted to two opposite groove walls of the communicating groove at the same time, and the buckling part is clamped with the bottom wall.

In one embodiment, the communication groove includes a first groove wall and a second groove wall that are disposed opposite to each other and can be abutted against the support portion at the same time, at least a partial region of the first groove wall extends to the second groove wall to form an extension portion, and the fastening portion can be fastened to the extension portion and the second groove wall at the same time.

In one embodiment, the extending portion is provided with a gas passing cavity, and the gas passing cavity, the communicating groove and the injection port are communicated with each other.

In one embodiment, the number of the connecting members is multiple, the circuit board is provided with a plurality of the lead-in holes, the connecting members penetrate through the lead-in holes in a one-to-one correspondence manner, and the connecting members are provided with injection holes which penetrate through the connecting members and are communicated with the molding space.

In one embodiment, the fixing seat is arranged on the bottom wall, a first enclosing baffle surrounding the communication hole is arranged on the fixing seat, and the first enclosing baffle is in full contact with the bottom wall.

In one embodiment, a second enclosure is arranged on the fixing seat, the second enclosure is arranged in the communicating groove in a penetrating mode, the second enclosure is in overall contact with the circuit board, the communicating groove is formed in the second enclosure, and the communicating hole penetrates through the second enclosure.

In one embodiment, a sealing ring surrounding the communication groove is arranged at one end, close to the circuit board, of the second enclosure, and the sealing ring is in full-face contact with the circuit board.

A grille screen, the grille screen comprising:

a sealed adapter box as described in any one of the embodiments above;

the lamp strip is arranged on the fixing seat and can cover the communication hole, one end of the adapter is connected with the lamp strip, and the other end of the adapter is connected with the circuit board.

A method for forming a seal for a grille screen according to the above embodiment, the method comprising:

the shell is placed upside down, so that an opening at one side of the accommodating cavity communicated with the outside faces upwards;

pouring sealant into the accommodating cavity, wherein the sealant can wrap the circuit board and can flow into the guide hole and fill the forming space;

and standing the sealant and cooling to form the sealing element.

Above-mentioned sealed adapter box, the both ends of adaptor are used for being connected with electrical apparatus respectively and are used for being connected with the circuit board. That is, ensuring the waterproof property of the sealed adapter box is mainly to ensure the tightness of the adapter. In this embodiment, the adaptor is disposed in the communicating hole, and the molding space includes the communicating hole. And the sealing member is filled in the molding space, so that the sealing member can reduce the liquid such as rainwater and the like from entering the molding space. Further, the seal member is capable of surrounding the interposer and the circuit board such that the interposer and the circuit board are further in a relatively isolated environment. Thereby further avoid external environment from the shaping space on inflow adaptor and the circuit board, guaranteed the waterproof nature of sealed adaptor box.

Drawings

FIG. 1 is an isometric view of a grille screen provided in one embodiment;

FIG. 2 is a cross-sectional view of the sealed adapter box of the grille screen of FIG. 1 taken along line A-A;

FIG. 3 is an isometric view of the housing, connectors, and circuit board of the grille screen of FIG. 2;

FIG. 4 is an isometric view of the connector in the grille screen of FIG. 3;

FIG. 5 is an exploded view of a portion of the structure of the grille screen of FIG. 1;

FIG. 6 is a schematic axial view of the mounting bracket of the grille screen of FIG. 2;

FIG. 7 is a bottom view of the fixing base shown in FIG. 6;

FIG. 8 is an exploded view of a portion of the structure of the grille screen of FIG. 1;

FIG. 9 is an isometric view of a seal in the grille screen of FIG. 2;

fig. 10 is a sectional view taken along line B-B of fig. 9.

Reference numerals: 10. a grid screen; 100. sealing the adapter box; 110. a housing; 111. an accommodating chamber; 1120. a communicating groove; 1121. a first slot wall; 1121a, an extension; 1121b, gas cavity; 1122. a second slot wall; 113. A bottom wall; 114. a side wall; 115. a plug; 120. a circuit board; 121. an introduction hole; 130. an adaptor; 131. arranging needles; 132. mother arrangement; 140. a fixed seat; 141. a communicating hole; 142. a first enclosure; 143. a second enclosure; 144. a seal ring; 150. a seal member; 160. a connecting member; 161. an injection hole; 162. a base plate; 163. a fastening part; 164. a support portion; 200. an electrical appliance; 210. a light bar.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to FIG. 1, FIG. 1 shows an isometric view of a grille screen in one embodiment of the invention; figure 2 is a cross-sectional view of the sealed adapter box of the grille screen of figure 1 taken along line a-a.

Referring to fig. 1 and 2, a grille screen 10 according to an embodiment of the present invention includes a sealing adapter box 100 and an electrical appliance 200. The sealed adapter box 100 is used to make a power supply (not shown, the same applies below) hermetically connected with the electrical appliance 200. The electrical appliance 200 includes a light bar 210. The light bar 210 is disposed on the sealing junction box 100. The power supply is connected to the light bar 210 through the sealed junction box 100 to provide power for the light bar 210 to display.

Referring to fig. 2, in one embodiment, the sealing adapter box 100 includes a housing 110, a circuit board 120, an adapter 130, a fixing base 140, and a sealing member 150. The housing 110 has an accommodating cavity 111 and a communicating groove 1120. The circuit board 120 is disposed in the accommodating cavity 111. The fixing base 140 is used for bearing the electrical appliance 200, and the fixing base 140 is provided with a communicating groove 1120. The accommodating chamber 111, the communication groove 1120 and the communication hole 141 are sequentially communicated to form a molding space. The adaptor 130 is disposed in the communication hole 141, one end of the adaptor 130 is used for connecting to the electrical appliance 200, and the other end of the adaptor 130 is connected to the circuit board 120. The sealing member 150 is filled in the molding space, and the sealing member 150 wraps the interposer 130 and the circuit board 120.

In the sealed adapter box 100, two ends of the adapter 130 are respectively used for connecting with the electrical appliance 200 and for connecting with the circuit board 120. That is, ensuring the waterproof property of the sealed adapter box 100 is mainly to ensure the sealing property of the adapter 130. In this embodiment, the adaptor 130 is disposed in the communication hole 141, and the molding space includes the communication hole 141. The sealing member 150 is filled in the molding space, so that liquid such as rainwater can be prevented from entering the molding space.

Further, the ability of the seal 150 to encapsulate the interposer 130 and the circuit board 120 further places the interposer 130 and the circuit board 120 in a relatively isolated environment. Thereby further preventing the external environment from flowing into the adaptor 130 and the circuit board 120 from the molding space, and ensuring the waterproof property of the sealing adaptor box 100.

With continued reference to fig. 2, in one embodiment, the adaptor 130 includes a pin array 131 and a female array 132 mating with the pin array 131. One end of the pin header 131 is connected with the PCB of the light bar 210, and the other end of the pin header 131 is connected with the pin header 132. One end of the row mother 132 is connected with the circuit board 120, and the other end of the row mother 132 is connected with the pin 131. In this way, the light bar 210 and the circuit board are connected to each other through the pin array 131 and the bus bar 132. Of course, the adaptor 130 may also connect the light bar 210 and the circuit board 120 through other methods, and may be configured according to actual requirements, which is not described herein again.

With reference to fig. 1 and fig. 2, it can be understood that the light bar 210 can cover the communication hole 141, so that the molding space can be kept relatively sealed, and rainwater can be prevented from entering the molding space through the communication hole 141. One end of the adaptor 130 is connected to the light bar 210, and the other end of the adaptor 130 is connected to the circuit board 120. In this way, the display content of the light bar 210 and the driving and stopping of the display of the light bar 210 can be controlled by the circuit board 120. It is understood that the power source is connected to the light bar 210 through the circuit board 120.

It should be understood that the adaptor 130, the connection between the adaptor 130 and the light bar 210, and the connection between the adaptor 130 and the circuit board 120 are all located in the molding space. I.e., all three are enclosed by the seal 150.

Referring to fig. 2 and 3, in one embodiment, the housing 110 includes a bottom wall 113 and a sidewall 114 connected to a periphery of the bottom wall 113. The communication groove 1120 is opened in the bottom wall 113. The fixing base 140 is disposed on the bottom wall 113. The circuit board 120 is connected to the side wall 114. One of the fixing base 140, the housing 110 and the circuit board 120 is provided with an introduction hole 121 for communicating the communication groove 1120 with the outside. In this way, the sealant can be poured into the communication groove 1120 through the introduction hole 121. The sealant can flow into the communication hole 141 through the communication groove 1120 and wrap the adaptor 130, so as to fill the whole molding space, and thus the adaptor 130, the connection between the adaptor 130 and the light bar 210, and the connection between the adaptor 130 and the circuit board 120 are relatively isolated from the outside.

Referring to fig. 3, in an embodiment, the circuit board 120 is located in the accommodating cavity 111, and the circuit board 120 is attached to the bottom wall 113. The introduction hole 121 is opened in the circuit board 120. The communication hole 141 and the communication groove 1120 can communicate with the accommodation chamber 111 through the introduction hole 121. In this way, the sealant can be directly filled into the accommodating cavity 111, so that the sealant can flow into the communication hole 141 and the communication groove 1120 from the introduction hole 121 to wrap the adaptor 130. Moreover, the sealing glue in the accommodating cavity 111 can wrap the circuit board 120 in the accommodating cavity 111, so that the circuit board 120 is also wrapped by the sealing element 150, and the waterproofness of the circuit board 120 is further ensured.

It should be noted that the circuit board 120 is attached to the bottom wall 113 of the housing 110, and divides the molding space into two parts. One part is the containing cavity 111, and the other part is the communication hole 141 plus the communication groove 1120. The lead-in hole 121 formed in the circuit board 120 can communicate with two parts of the molding space, so that the molding space can be filled with the sealant only by one-time sealant filling. Even though the seal member 150 is able to completely encapsulate the interposer 130 and the circuit board 120 within the receiving cavity 111.

It should be noted that the circuit board 120 is disposed in the accommodating chamber 111, and the adaptor 130 is disposed in the communication hole 141 and the communication groove 1120. If the introduction hole 121 is formed in the housing 110 or the fixing base 140, it is difficult to simultaneously wrap the circuit board 120 located in the accommodating cavity 111 and the adaptor 130 located in the communication hole 141 and the communication groove 1120 in the sealing member 150 only by filling the sealant once. In other words, at least one sealant filling process is required to be performed in the accommodating cavity 111, the communication hole 141 and the communication groove 1120, and the sealant filling process is performed for two times in total, so that the circuit board 120 and the adaptor 130 are both wrapped in the sealant. In the above embodiment, the introduction hole 121 is formed in the circuit board 120, so that the accommodating cavity 111, the communication hole 141 and the communication groove 1120 can be communicated, the adaptor 130 and the circuit board 120 can be wrapped in the sealing member 150 by only one-time glue filling, and the number of glue filling times is reduced. Thus, the efficiency of molding the sealing member 150 is improved. On the other hand, various errors caused by repeatedly moving the station of the grid screen 10 during multiple times of glue pouring are avoided.

It should be understood that, in the case of the housing 110 itself, the communication groove 1120 is in communication with the accommodation chamber 111. However, the circuit board 120 needs to be disposed on the bottom wall 113, so that the adaptor 130 can be connected to the circuit board 120 through the communication groove 1120 opened on the bottom wall 113. As such, the circuit board 120 will hinder the mutual communication of the accommodating cavity 111 and the communication groove 1120 to some extent.

Of course, in some embodiments, the introduction hole 121 may be further disposed on the housing 110 or the fixing base 140 according to requirements, so as to fill the molding space with glue through the introduction hole 121.

Continuing to refer to fig. 3, in one embodiment, the sealing adapter box 100 further includes a connector 160. The connecting member 160 is inserted through the introduction hole 121. One end of the connector 160 is connected to the circuit board 120, and the other end of the connector 160 is connected to the bottom wall 113. In this way, the circuit board 120 and the bottom wall 113 can be kept relatively fixed by the connecting member 160, even though the circuit board 120 and the housing 110 are kept relatively fixed.

Further, the connection member 160 is provided with an injection hole 161 penetrating the connection member 160. Thus, the accommodating chamber 111 can communicate with the communication groove 1120 and the communication hole 141 through the injection hole 161, so as to realize disposable glue filling. That is, the connection member 160 can fix the circuit board 120 and realize one-time potting. In this manner, the seal adapter 100 is more compact.

Referring to fig. 4, in one embodiment, the connecting member 160 has at least two injection holes 161. At least two injection holes 161 each penetrate the connection member 160. It is understood that, since the communication groove 1120 and the communication hole 141 are sealed with respect to the outside, when the sealant flows into the communication groove 1120 and the communication hole 141 through one of the injection holes 161, the gas in the communication groove 1120 and the communication hole 141 can flow to the outside through the other injection hole 161. Thus, the air in the communication groove 1120 and the communication hole 141 is prevented from flowing out and blocking the sealant filling molding space. In other words, the air trapping during the glue filling process is prevented from affecting the sealing performance of the sealing element 150.

Referring to fig. 4 in conjunction with fig. 3, in one embodiment, the connecting member 160 includes a bottom plate 162, and a locking portion 163 and a supporting portion 164 connected to the bottom plate 162 and extending away from the bottom plate 162. The base plate 162 is located in the accommodating cavity 111 and abuts against the circuit board 120. The locking portion 163 and the supporting portion 164 are disposed through the communication groove 1120. The locking portion 163 is locked to the bottom wall 113. The locking portion 163 and the supporting portion 164 surround to form an injection hole 161. The support portion 164 can simultaneously abut on the opposite groove walls of the communication groove 1120.

In the above embodiment, since the fastening portion 163 is connected to the bottom plate 162, the bottom plate 162 is located in the accommodating cavity 111 and abuts against the circuit board 120; the fastening portion 163 is disposed through the communication groove 1120 and fastened to the bottom wall 113. The circuit board 120 can be connected to the housing 110 by the connection member 160. Also, the connection of the circuit board 120 and the housing 110 by the connector 160 is more convenient than the connection by a screw or the like.

In the above embodiment, the locking portion 163 and the supporting portion 164 surround to form one of the injection holes 161. Other injection holes 161 may be opened in the base plate 162. It is understood that the size of the bottom plate 162 in the radial direction of the introduction hole 121 is larger than the radial size of the introduction hole 121. Thus, on the one hand, a space for opening the injection holes 161 can be ensured on the plurality of bottom plates 162, and on the other hand, the bottom plates 162 can be kept in contact with the circuit board 120, so that the circuit board 120 is prevented from being relatively fixed to the housing 110 due to the fact that the bottom plates 162 slide into the introduction holes 121.

Referring to fig. 3 to fig. 5, in an embodiment, the communication groove 1120 includes a first groove wall 1121 and a second groove wall 1122 that are disposed opposite to each other and can be abutted against the supporting portion 164 at the same time. That is, the supporting portion 164 can simultaneously abut against the first groove wall 1121 and the second groove wall 1122, so that the connecting member 160 can be prevented from shaking relative to the housing 110. It will be appreciated that the connecting member 160 is held in engagement with the bottom wall 113 by the engagement portion, and the engagement portion 163 has a certain elastic deformation. Therefore, the support portion 164 can prevent the locking portion 163 from shaking between the connecting member 160 and the housing 110 due to the elastic deformation, and prevent the relative fixation between the circuit board 120 and the housing 110 from being unstable.

An extension portion 1121a is provided on at least a portion of the first slot wall 1121 extending toward the second slot wall 1122. The fastening portion 163 can be simultaneously fastened to the extending portion 1121a and the second groove wall 1122. Thus, the clamping portion 163 can be ensured to be clamped with the two opposite groove walls of the communication groove 1120 at the same time. In a reverse example, if the first groove wall 1121 is not provided with the extending portion 1121a, in order to ensure that the fastening portion 163 can be simultaneously engaged with the two opposite groove walls of the communication groove 1120, the size of the fastening portion 163, that is, the size of the connecting member 160, that is, the radial size of the introduction hole 121, needs to be increased. It is understood that the circuit board 120 is a relatively precise electronic component, and various dimensional changes on the circuit board 120 will have a large impact on the performance thereof. Thus, by providing the extension portion 1121a, it is possible to avoid the performance of the circuit board 120 from being affected by an excessively large size of the introduction hole 121.

Referring to fig. 5 in combination with fig. 3, the extending portion 1121a is provided with a gas distribution cavity 1121 b. The air-moving cavity 1121b, the communication groove 1120 and the injection port are communicated with each other. With this arrangement, when the sealant flows into the communication groove 1120 from the injection port, the air in the communication hole 141 communicated with the communication groove 1120 and the communication groove 1120 can flow into the gas release chamber 1121 b. And since the air-leaking cavity 1121b is communicated with the injection hole 161, the air in the air-leaking cavity 1121b can flow from the injection hole 161 to the outside, thereby preventing the air trapping phenomenon of the sealing member 150 during the molding process.

Referring to fig. 5 to 7, in an embodiment, the fixing base 140 is provided with a first surrounding barrier 142 surrounding the communication hole 141. The first rail 142 is in full face contact with the bottom wall 113. Therefore, the relative sealing of the forming space can be ensured. Thus, on the one hand, leakage of the sealant is avoided when the sealing member 150 is not molded; on the other hand, liquid such as rainwater in the outside is prevented from entering the communication hole 141. The above-described overall contact means that the first rail 142 can be in contact with the bottom wall 113 at any position in the circumferential extension direction thereof. In other words, the full contact between the first surrounding barrier 142 and the bottom wall 113 means that there is no gap between the first surrounding barrier 142 and the bottom wall 113.

It should be understood that, in the present embodiment, the molding space includes not only the accommodating chamber 111, the communication groove 1120, and the communication hole 141, but also a space surrounded by the first enclosure 142 and the bottom wall 113.

Referring to fig. 6 and 7, in an embodiment, the fixing base 140 is provided with a second enclosure 143. The second enclosure 143 is disposed through the communication groove 1120. The second rail 143 is in full face contact with the circuit board 120. The communication hole 141 is opened on the second enclosure 143, that is, the enclosure is disposed around the second enclosure 143. And the communication hole 141 penetrates the second enclosure 143, that is, the adaptor 130 is disposed in the second enclosure 143. Similarly, the fact that the second surrounding barrier 143 is in full-face contact with the circuit board 120 means that the second surrounding barrier 143 can be in contact with the circuit board 120 at any position in the circumferential extending direction of the second surrounding barrier 143. In other words, the full contact of the second enclosure 143 with the circuit board 120 means that there is no gap between the second enclosure 143 and the circuit board 120.

In the above embodiment, the second enclosure 143 is disposed in the communication groove 1120, the second enclosure 143 is in full contact with the circuit board 120, and the adaptor 130 is disposed in the second enclosure 143. In this way, the second enclosure 143 can further separate the connecting piece 160 from the molding space. In this way, a hermetic protection of the second layer is formed. With the above embodiment, the sealing member 150 can be filled between the first surrounding barrier 142 and the second surrounding barrier 143, so as to prevent liquid such as rain water from entering the forming space. And, the adaptor 130 is further sealed in the molding space by the second enclosure 143. Thereby, the waterproof property of the seal adapter 100 can be further improved.

It can be understood that, in combination with the above embodiments, the space surrounded by the first enclosure 142, the second enclosure 143, and the bottom wall 113 is a part of the forming space. Therefore, the accommodating chamber 111, the communicating groove 1120 and the communicating hole 141 in the above embodiment are sequentially communicated to form the forming space, which is not contradictory.

For example, when the second enclosure 143 is not disposed on the base, the molding space can be understood as being composed of the accommodating cavity 111, the communication groove 1120 and the communication hole 141, and the sealing member 150 is filled in the accommodating cavity 111, the communication groove 1120 and the communication hole 141. Alternatively, when the first enclosure 142 is provided on the base and the second enclosure 143 is not provided, the molding space may be understood as a space defined by the first enclosure 142 and the bottom wall 113, the accommodating chamber 111, the communication groove 1120, and the communication hole 141. At this time, the sealing member 150 is still filled in the entire molding space, and thus the description thereof is omitted.

Referring to fig. 8 in conjunction with fig. 6 and 7, when the first surrounding barrier 142 and the second surrounding barrier 143 are disposed on the base, the forming space can still be understood as the space formed by the first surrounding barrier 142 and the bottom wall 113, the accommodating cavity 111, the communicating groove 1120 and the communicating hole 141. In this case, the sealing body is filled in the space defined by the first surrounding wall 142 and the bottom wall 113, the communication groove 1120, and the accommodating chamber 111.

Referring to fig. 7, a sealing ring 144 surrounding the communication groove 1120 is disposed at an end of the second enclosure 143 near the circuit board 120. The seal ring 144 is in full face contact with the circuit board 120. By providing the sealing ring 144, a gap between the second enclosure 143 and the circuit board 120 due to an installation error between the circuit board 120 and the fixing base 140 is avoided. The sealing ring 144 can be used for dispensing glue to the second enclosure 143 when the fixing base 140 is mounted on the bottom wall 113. After the glue cools, the sealing ring 144 is formed. That is, the fitting gap between the second enclosure 143 and the circuit board 12 can be reduced by applying primer on the second enclosure 143 to form the sealing ring 144, so as to prevent the potting adhesive from penetrating into the communication groove 1120.

It should be noted that the seal ring 144 according to the above embodiment is not a conventional seal ring with interchangeability. Conventional sealing rings, due to their shape and limited elastic deformability, often do not adapt well to the above-mentioned clearances of engagement, i.e. do not have a good sealing action. In the above embodiment, the sealing ring 144 is formed by applying primer, so that the sealing ring 144 can be formed in a self-adaptive manner, and the sealing performance of the sealing position of the sealing ring 144 is improved. Specifically, a groove (not shown, the same applies below) surrounding the communication groove 1120 is formed at one end of the second enclosure 143 close to the circuit board 120. That is, the groove extends in the axial direction of the second enclosure 143. The groove is adapted to receive a sealing ring 144. When the fixing base 140 is mounted on the bottom wall 113, primer can be applied to the groove of the second enclosure 143 to form the sealing ring 144.

It should be understood that, referring to fig. 9 and 10, the space indicated by the arrow K in fig. 10 is a space where the sealing member 150 is used to wrap the adaptor member 130 or the second enclosure 143. The space indicated by the arrow M in fig. 10 is a space where the sealing member 150 is used to wrap the circuit board 120.

In one embodiment, the number of the connection members 160 is plural. The circuit board 120 has a plurality of inlet holes 121. The connecting members 160 are inserted into the introduction holes 121 in a one-to-one correspondence, and the connecting members 160 are provided with injection holes 161 that penetrate through the connecting members 160 and communicate with the molding space. The circuit board 120 can be stably connected to the housing 110 by the plurality of connection members 160. The rapid entry of the sealing member 150 into the communication hole 141 can be facilitated by the injection holes 161 of the plurality of connection members 160.

In one embodiment, the number of the light bars 210 in the grille screen 10 may be plural. The number of the fixing seats 140, the number of the communication holes 141, and the number of the adapters 130 in the seal adapter 100 are correspondingly plural. The bottom wall 113 is provided with a plurality of communication grooves 1120, and the number of the communication grooves 1120 corresponds to the number of the fixing seats 140. Each of the holders 140 is used for supporting one or more light bars 210.

Referring to fig. 5 to 8, for convenience of description, one fixing base 140 for supporting two light bars 210 is described as an example. At this time, two communication holes 141 are formed on the base. The two adapters 130 are respectively inserted into the two communication holes 141. The two adapters 130 are used to connect the two light bars 210 to the circuit board 120. It can be understood that the number of the communication grooves 1120 is the same as that of the fixing base 140, that is, two adapters 130 are disposed in the same communication hole 141. Thus, two adapters 130 can be included simultaneously by pouring the sealant into the molding space.

In one embodiment, a method of forming a seal 150 includes:

the housing 110 is placed upside down, so that the side of the accommodating cavity 111 communicated with the outside is opened upwards;

pouring sealant into the accommodating cavity 111, wherein the sealant can wrap the circuit board 120 and can flow into the guide hole 121 and fill the forming space;

the sealant cools upon standing to form the seal 150.

Referring to fig. 3 and 5, the above-mentioned turning over of the housing 110 means turning over the housing 110 from the state shown in fig. 3 to a state where the Z-axis is in the same direction as the gravity direction. Therefore, the sealant can be directly poured into the accommodating cavity 111 and can flow into all corners in the forming space under the action of gravity. It can be understood that plugs 115 are disposed at two ends of the housing 110, and the sealant in the accommodating cavity 111 can be prevented from leaking through the plugs 115, so that the sealant in the accommodating cavity 111 can flow into the forming spaces such as the communication groove 1120 and the communication hole 141 through the injection hole 161.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a sealed switching box for use electrical apparatus and the sealed switching of power, a serial communication port, sealed switching box includes casing, circuit board, adaptor, fixing base and sealing member, seted up on the casing and held chamber and intercommunicating pore, the circuit board is located hold the intracavity, the fixing base is used for bearing with electrical apparatus, the intercommunicating pore has been seted up on the fixing base, hold the chamber the intercommunication groove with the intercommunicating pore communicates in proper order and forms the shaping space, the adaptor is located in the intercommunicating pore, the one end of adaptor be used for with be connected with electrical apparatus, the other end of adaptor with the circuit board is connected, the sealing member fill in the shaping space, the sealing member parcel adaptor and circuit board.

2. The seal adapter box according to claim 1, wherein the housing includes a bottom wall and a side wall connected to a periphery of the bottom wall, the communication groove is formed in the bottom wall, the circuit board is connected to the side wall, and one of the fixing base, the housing, and the circuit board is provided with an introduction hole for communicating the communication groove with the outside.

3. The sealing adapter box of claim 2, further comprising a connector, wherein the introduction hole is formed in the circuit board, the connector penetrates through the introduction hole, one end of the connector is connected with the circuit board, the other end of the connector is connected with the bottom wall, and an injection hole penetrating through the connector is formed in the connector.

4. The sealing adapter box of claim 3, wherein the connector has at least two injection holes formed therein, the at least two injection holes both extending through the connector.

5. The sealing adapter box according to claim 3, wherein the connecting member includes a bottom plate, and a locking portion and a supporting portion connected to the bottom plate and extending in a direction away from the bottom plate, the bottom plate is located in the accommodating cavity and abuts against the circuit board, the locking portion and the supporting portion are inserted into the communicating groove, the locking portion and the supporting portion surround to form the injection hole, the supporting portion can be simultaneously abutted against two opposite groove walls of the communicating groove, and the locking portion is clamped with the bottom wall.

6. The seal adapter according to claim 5, wherein the communication groove includes a first groove wall and a second groove wall that are opposite to each other and can be abutted against the support portion at the same time, at least a portion of the first groove wall extends to the second groove wall to form an extension portion, and the fastening portion can be fastened to the extension portion and the second groove wall at the same time.

7. The sealing adapter box of claim 6, wherein the extension portion is provided with an air-passing cavity, and the air-passing cavity, the communicating groove and the injection port are communicated with each other.

8. The seal adapter box according to claim 3, wherein the number of the connecting members is plural, the circuit board is provided with a plurality of the introducing holes, the connecting members penetrate the introducing holes in a one-to-one correspondence manner, and the connecting members are provided with injecting holes which penetrate through the connecting members and are communicated with the molding space.

9. The seal adapter box according to claim 2, wherein the fixing seat is disposed on the bottom wall, and a first surrounding barrier disposed around the communication hole is disposed on the fixing seat and in full contact with the bottom wall.

10. The seal adapter box according to claim 2, wherein a second enclosure is disposed on the fixing base, the second enclosure is disposed in the communicating groove in a penetrating manner, the second enclosure is in full contact with the circuit board, the communicating groove is disposed on the second enclosure, and the communicating hole penetrates through the second enclosure.

11. The seal adapter of claim 10 wherein said second enclosure has a seal ring disposed around said channel at an end thereof adjacent said circuit board, said seal ring being in full face contact with said circuit board.

12. A grille screen, the grille screen comprising:

the sealing adapter of any one of claims 2 to 11;

13. A method of forming a seal for a grille screen as claimed in claim 12 wherein the method of forming the seal comprises:

and standing the sealant and cooling to form the sealing element.