Dual sealing structure and sealing method for switch housing

Abstract

The application relates to the technical field of switch housings, in particular to a double-sealing structure and sealing method for a switch housing. The double-sealing structure for the switch housing comprises an upper housing and a housing assembly. The housing assembly comprises a lower housing, a plurality of threaded hole columns, a plurality of connecting bolts and two first sealing components. The lower housing is provided with wire passing openings on both sides. The first sealing component comprises a lower sponge strip, a guide column, a pressing plate and an upper sponge strip. A circuit board is mounted on the inner side of the lower housing, and a connecting cable is connected with the circuit board through the wire passing openings. The upper housing is mounted on the lower housing. In this process, the lower housing pushes the pressing plate to move downwards, so that the upper sponge strip and the lower sponge strip are butted and deformed to tightly abut, thereby sealing the wire passing openings, preventing foreign matters from entering the switch housing, avoiding pollution of electrical elements in the switch housing, and improving the service life and operation reliability of the switch.

Description

Technical Field

[0001] This invention relates to the field of switch housing technology, and in particular to a double-sealing structure and sealing method for switch housings. Background Technology

[0002] As a critical component protecting internal electrical components from external environmental influences, the structural design of the switch housing is of paramount importance. Currently, most commercially available switch housings employ a split structure, consisting of an upper and lower housing that interlock or are connected by fasteners, facilitating the installation and maintenance of internal components. To enable electrical connections between the switch and external components, the housing typically includes cable routing channels, such as outlet or inlet holes, for connecting cables. This modular housing design is widely used in industrial control and household appliances.

[0003] However, the existing switch housing structure described above presents significant safety hazards during use. After the cable passes through, gaps inevitably exist between the inner wall of the cable channel and the cable sheath. In humid, dusty environments, or environments containing small insects or other foreign objects, moisture, dust, or rodents can easily enter the switch housing through these gaps. This intrusion can severely contaminate internal electrical components, potentially leading to short circuits, poor contact, decreased insulation performance, or even fires, thereby significantly reducing the switch's lifespan and operational reliability. Summary of the Invention

[0004] The purpose of this invention is to provide a double-sealing structure and sealing method for switch housings, which can prevent foreign objects from entering the switch housing, avoid foreign objects from contaminating the electrical components inside the switch housing, and improve the service life and operational reliability of the switch.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a double-sealing structure for a switch housing, comprising an upper housing and a housing assembly, wherein the housing assembly comprises a lower housing, a plurality of threaded studs, a plurality of connecting bolts, and two first sealing components; The lower housing has wire-passing openings on both sides; the lower housing is located at the bottom of the upper housing; multiple screw-hole studs are fixedly connected to the lower housing and are located inside the lower housing; multiple connecting bolts pass through the upper housing and are threadedly connected to the multiple screw-hole studs; two first sealing components are respectively disposed at the two wire-passing openings, and the first sealing component includes a lower sponge strip, a guide post, a pressure plate, and an upper sponge strip; the lower sponge strip is fixedly connected to the lower housing and is located inside the wire-passing opening; the guide post is slidably connected to the lower housing and is located inside the lower housing; the pressure plate is fixedly connected to the guide post and is located at the top of the guide post; the upper sponge strip is fixedly connected to the pressure plate and is located at the bottom of the pressure plate.

[0006] The first sealing component further includes a first spring; one end of the first spring is fixedly connected to the lower housing, and the other end is fixedly connected to the guide post, and is located inside the lower housing.

[0007] The lower sponge strip has multiple grooves, which are evenly distributed on the surface of the lower sponge strip.

[0008] The housing assembly further includes an intermediate shaft and two second sealing components; the intermediate shaft is fixedly connected to the upper housing and is located inside the upper housing; the two second sealing components are mirror images of each other at both ends of the intermediate shaft.

[0009] The second sealing component includes a second spring, a slider, a slide rod, and a baffle; the second spring is fixedly connected to the upper housing and located outside the intermediate shaft; the slider is fixedly connected to the second spring and slidably connected to the intermediate shaft, and located outside the intermediate shaft; the slide rod is fixedly connected to the slider and slidably connected to the upper housing, and passes through the upper housing; the baffle is fixedly connected to the slide rod and located on the side of the slide rod.

[0010] The second sealing component further includes a sealing strip; the sealing strip is fixedly connected to the baffle and is located inside the baffle.

[0011] Secondly, the present invention also provides a double sealing method for a switch housing, comprising: Install the circuit board inside the lower housing, and connect the connecting cable through the wire passage opening to the circuit board; Place the upper housing over the lower housing, and the lower housing pushes the pressure plate down, causing the upper and lower sponge strips to align and seal the wire opening. Tighten the connecting bolts onto the threaded post to connect the upper and lower housings, completing the installation of the switch housing.

[0012] This invention discloses a double-sealing structure and sealing method for a switch housing. A circuit board is installed inside the lower housing, and a connecting cable passes through the cable passage opening and connects to the circuit board. The connecting cable is positioned between the lower and upper sponge strips. The upper housing is then placed on top of the lower housing. During this process, the lower housing pushes the pressure plate downwards, causing the upper and lower sponge strips to align and deform, thereby sealing the cable passage opening and clamping the connecting cable. Then, the connecting bolts are tightened onto the screw holes, connecting the upper and lower housings and completing the installation of the switch housing. The upper and lower sponge strips effectively seal the cable passage opening, preventing damage to the connecting cable and preventing foreign objects from entering the switch housing, thus avoiding contamination of the internal electrical components and improving the switch's service life and operational reliability. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0014] Figure 1 This is a schematic diagram of the overall structure of a first embodiment of a double-sealing structure for a switch housing according to the present invention.

[0015] Figure 2 This is an overall cross-sectional view of a first embodiment of a double-sealing structure for a switch housing according to the present invention.

[0016] Figure 3 This is another cross-sectional view of the first embodiment of a double-sealing structure for a switch housing according to the present invention.

[0017] Figure 4 This is another cross-sectional view of the first embodiment of a double-sealing structure for a switch housing according to the present invention.

[0018] Figure 5 This is a schematic diagram of the overall structure of a second embodiment of a double-sealing structure for a switch housing according to the present invention.

[0019] Figure 6 This is a flowchart of a double sealing method for a switch housing according to the present invention.

[0020] 101-Upper housing, 102-Lower housing, 103-Screw hole post, 104-Connecting bolt, 105-First sealing component, 106-Wire passage opening, 107-Lower sponge strip, 108-Guide post, 109-Pressure plate, 110-Upper sponge strip, 111-First spring, 112-Wire groove, 113-Intermediate shaft, 114-Second sealing component, 115-Second spring, 116-Slider, 117-Sliding rod, 118-Baffle, 119-Sealing strip, 201-Mounting assembly, 202-Mounting base, 203-Mounting bolt. Detailed Implementation

[0021] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0022] In a first aspect, the present invention provides a double-sealing structure for a switch housing. A first embodiment of the double-sealing structure for a switch housing of this application is as follows: Please see Figures 1-4 ,in, Figure 1 This is a schematic diagram of the overall structure of a first embodiment of a double-sealing structure for a switch housing according to the present invention; Figure 2 This is an overall cross-sectional view of a first embodiment of a double-sealing structure for a switch housing according to the present invention; Figure 3 This is another cross-sectional view of the first embodiment of a double sealing structure for a switch housing according to the present invention; Figure 4 This is another cross-sectional view of the first embodiment of a double-sealing structure for a switch housing according to the present invention.

[0023] This invention provides a double-sealing structure for a switch housing, comprising an upper housing 101 and a housing assembly. The housing assembly includes a lower housing 102, multiple screw-hole posts 103, multiple connecting bolts 104, two first sealing components 105, an intermediate shaft 113, and two second sealing components 114. The first sealing component 105 includes a lower sponge strip 107, a guide post 108, a pressure plate 109, an upper sponge strip 110, and a first spring 111. The second sealing component 114 includes a second spring 115, a slider 116, a slide rod 117, a baffle 118, and a sealing strip 119. This design prevents foreign objects from entering the switch housing, avoids contamination of the electrical components inside the switch housing, and improves the service life and operational reliability of the switch.

[0024] In this specific embodiment, the lower housing 102 has wire-passing openings 106 on both sides; the lower housing 102 is located at the bottom of the upper housing 101; a plurality of screw-hole studs 103 are respectively fixedly connected to the lower housing 102 and are respectively located inside the lower housing 102; a plurality of connecting bolts 104 pass through the upper housing 101 and are respectively threadedly connected to the plurality of screw-hole studs 103; two first sealing components 105 are respectively disposed at the two wire-passing openings 106, the first sealing components 105... 05 includes a lower sponge strip 107, a guide post 108, a pressure plate 109, and an upper sponge strip 110; the lower sponge strip 107 is fixedly connected to the lower housing 102 and is located within the wire passage opening 106; the guide post 108 is slidably connected to the lower housing 102 and is located inside the lower housing 102; the pressure plate 109 is fixedly connected to the guide post 108 and is located at the top of the guide post 108; the upper sponge strip 110 is fixedly connected to the pressure plate 109 and is located at the bottom of the pressure plate 109. The circuit board is installed inside the lower housing 102. The connecting cable passes through the wire passage opening 106 and connects to the circuit board. The connecting cable is located between the lower sponge strip 107 and the upper sponge strip 110. Then, the upper housing 101 is placed on top of the lower housing 102. During this process, the lower housing 102 pushes the pressure plate 109 downward, causing the upper sponge strip 110 and the lower sponge strip 107 to align and deform, thereby sealing the wire passage opening 106 and clamping and fixing the connecting cable. Then, the connecting bolt 104 is tightened on the screw hole post 103 to connect the upper housing 101 and the lower housing 102, completing the installation of the switch housing. The upper sponge strip 110 and the lower sponge strip 107 can seal the wire passage opening 106, while avoiding damage to the connecting cable, preventing foreign objects from entering the switch housing, avoiding contamination of the electrical components inside the switch housing, and improving the service life and operational reliability of the switch.

[0025] The first spring 111 is fixedly connected at one end to the lower housing 102 and at the other end to the guide post 108, and is located inside the lower housing 102. After the upper housing 101 is connected to the lower housing 102, the first spring 111 is in a compressed state. After the upper housing 101 is separated from the lower housing 102, the first spring 111 returns to its original state and pushes the guide post 108 and the pressure plate 109 upward, so that the upper sponge strip 110 is separated from the lower sponge strip 107, so as to facilitate the maintenance of the connecting cable.

[0026] Secondly, the lower sponge strip 107 has multiple wire grooves 112, which are evenly distributed on the surface of the lower sponge strip 107. The size of the wire grooves 112 is adapted to the size of the connecting cable. Placing the connecting cable in the wire grooves 112 can improve the sealing effect of the upper sponge strip 110 and the lower sponge strip 107 on the wire passage opening 106.

[0027] Meanwhile, the intermediate shaft 113 is fixedly connected to the upper housing 101 and is located inside the upper housing 101; two second sealing components 114 are mirror-arranged at both ends of the intermediate shaft 113. The intermediate shaft 113 is used to provide support and guidance for the second sealing components 114, and the second sealing components 114 are used to seal the connection between the upper housing 101 and the lower housing 102.

[0028] Additionally, the second spring 115 is fixedly connected to the upper housing 101 and located outside the intermediate shaft 113; the slider 116 is fixedly connected to the second spring 115 and slidably connected to the intermediate shaft 113, and located outside the intermediate shaft 113; the slide rod 117 is fixedly connected to the slider 116 and slidably connected to the upper housing 101, and passes through the upper housing 101; the baffle 118 is fixedly connected to the slide rod 117 and located on the side of the slide rod 117. After the upper housing 101 is connected to the lower housing 102, the second spring 115 is in a compressed state. The second spring 115 will always apply a pushing force to the slider 116, causing the baffle 118 to abut against the connection between the upper housing 101 and the lower housing 102, sealing the connection between the upper housing 101 and the lower housing 102, and preventing foreign objects from entering the switch housing.

[0029] Furthermore, the sealing strip 119 is fixedly connected to the baffle 118 and is located inside the baffle 118. Under the force of the second spring 115, the sealing strip 119 abuts against the connection between the upper housing 101 and the lower housing 102, sealing the connection between the upper housing 101 and the lower housing 102.

[0030] When using this invention, the circuit board is installed inside the lower housing 102, and the connecting cable passes through the wire groove 112 and the wire passage opening 106 to connect to the circuit board. The connecting cable is located between the lower sponge strip 107 and the upper sponge strip 110. First, pull the slide rod 117 to move the baffle 118 away from the upper housing 101, and then cover the lower housing 102 with the upper housing 101. During this process, the lower housing 102 pushes the pressure plate 109 down, causing the upper sponge strip 110 and the lower sponge strip 107 to align and deform to press against each other, thereby sealing the wire passage opening 106 and clamping and fixing the connecting cable. Then, tighten the connecting bolt 104 on the screw hole post 103 to secure the circuit board. The upper housing 101 and the lower housing 102 are connected to complete the installation of the switch housing. At this time, the second spring 115 is in a compressed state. The second spring 115 will always apply a pushing force to the slider 116, so that the sealing strip 119 abuts against the connection between the upper housing 101 and the lower housing 102, sealing the connection between the upper housing 101 and the lower housing 102. The upper sponge strip 110 and the lower sponge strip 107 can close the wire opening 106, while avoiding damage to the connecting cable, preventing foreign objects from entering the switch housing, avoiding foreign objects from contaminating the electrical components inside the switch housing, and improving the service life and operational reliability of the switch.

[0031] A second embodiment of the double-sealing structure for a switch housing according to this application is as follows: Based on the first embodiment, please refer to Figure 5 ,in, Figure 5 This is a schematic diagram of the overall structure of a second embodiment of a double-sealing structure for a switch housing according to the present invention.

[0032] The present invention provides a double sealing structure for a switch housing, which further includes multiple mounting components 201; the mounting components 201 include mounting bases 202 and mounting bolts 203.

[0033] In this specific embodiment, multiple mounting components 201 are respectively disposed on the side of the lower housing 102. The lower housing 102 can be mounted at the desired location using the mounting components 201.

[0034] The mounting base 202 is fixedly connected to the lower housing 102 and is located on the side of the lower housing 102; the mounting bolt 203 is threadedly connected to the mounting base 202 and is located on the side of the mounting base 202. The mounting base 202 supports the mounting bolt 203, which allows the lower housing 102 to be installed at the desired position.

[0035] When using this invention, if it is necessary to install the switch housing, a screw hole is made at the installation position, and the lower housing 102 can be installed at the required position using the mounting bolt 203.

[0036] Secondly, please refer to Figure 6 , Figure 6 This is a flowchart of a double sealing method for a switch housing according to the present invention.

[0037] The present invention also provides a double sealing method for a switch housing, comprising: S1 installs the circuit board inside the lower housing 102, and the connecting cable passes through the wire passage opening 106 to connect to the circuit board; S2 covers the upper housing 101 on the lower housing 102, and the lower housing 102 pushes the pressure plate 109 to move down, so that the upper sponge strip 110 and the lower sponge strip 107 are connected, sealing the wire passage opening 106. S3 tightens the connecting bolt 104 onto the threaded post 103, connecting the upper housing 101 and the lower housing 102 to complete the installation of the switch housing.

[0038] This invention discloses a double-sealing method for a switch housing. A circuit board is installed inside the lower housing 102, and a connecting cable passes through the wire passage opening 106 and connects to the circuit board. The connecting cable is positioned between the lower sponge strip 107 and the upper sponge strip 110. Then, the upper housing 101 is placed on top of the lower housing 102. During this process, the lower housing 102 pushes the pressure plate 109 downwards, causing the upper sponge strip 110 and the lower sponge strip 107 to align and deform, thereby sealing the wire passage opening 106 and clamping the connecting cable. Then, the connecting bolt 104 is tightened onto the screw hole post 103, connecting the upper housing 101 and the lower housing 102, completing the installation of the switch housing. The upper sponge strip 110 and the lower sponge strip 107 can seal the wire passage opening 106, preventing damage to the connecting cable, preventing foreign objects from entering the switch housing, avoiding contamination of the electrical components inside the switch housing, and improving the service life and operational reliability of the switch.

[0039] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A double-sealing structure for a switch housing, comprising an upper housing, characterized in that, It also includes housing components; The housing assembly includes a lower housing, multiple threaded posts, multiple connecting bolts, and two first sealing components; The lower housing has wire-passing openings on both sides; the lower housing is located at the bottom of the upper housing; multiple screw-hole studs are fixedly connected to the lower housing and are located inside the lower housing; multiple connecting bolts pass through the upper housing and are threadedly connected to the multiple screw-hole studs; two first sealing components are respectively disposed at the two wire-passing openings, and the first sealing component includes a lower sponge strip, a guide post, a pressure plate, and an upper sponge strip; the lower sponge strip is fixedly connected to the lower housing and is located inside the wire-passing opening; the guide post is slidably connected to the lower housing and is located inside the lower housing; the pressure plate is fixedly connected to the guide post and is located at the top of the guide post; the upper sponge strip is fixedly connected to the pressure plate and is located at the bottom of the pressure plate.

2. The double-sealing structure for the switch housing as described in claim 1, characterized in that, The first sealing component further includes a first spring; one end of the first spring is fixedly connected to the lower housing, and the other end is fixedly connected to the guide post, and is located inside the lower housing.

3. The double-sealing structure for the switch housing as described in claim 2, characterized in that, The lower sponge strip has multiple grooves, which are evenly distributed on the surface of the lower sponge strip.

4. The double-sealing structure for the switch housing as described in claim 3, characterized in that, The housing assembly further includes an intermediate shaft and two second sealing components; the intermediate shaft is fixedly connected to the upper housing and is located inside the upper housing; the two second sealing components are mirror images of each other at both ends of the intermediate shaft.

5. The double-sealing structure for the switch housing as described in claim 4, characterized in that, The second sealing component includes a second spring, a slider, a slide rod, and a baffle; the second spring is fixedly connected to the upper housing and located outside the intermediate shaft; the slider is fixedly connected to the second spring and slidably connected to the intermediate shaft, and located outside the intermediate shaft; the slide rod is fixedly connected to the slider and slidably connected to the upper housing, and passes through the upper housing; the baffle is fixedly connected to the slide rod and located on the side of the slide rod.

6. The double-sealing structure for the switch housing as described in claim 5, characterized in that, The second sealing component further includes a sealing strip; the sealing strip is fixedly connected to the baffle and is located inside the baffle.

7. A double-sealing method for a switch housing, applied to the double-sealing structure for a switch housing as described in any one of claims 1-6, characterized in that, include: Install the circuit board inside the lower housing, and connect the connecting cable through the wire passage opening to the circuit board; Place the upper housing over the lower housing, and the lower housing pushes the pressure plate down, causing the upper and lower sponge strips to align and seal the wire opening. Tighten the connecting bolts onto the threaded post to connect the upper and lower housings, completing the installation of the switch housing.

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