Table type water purifying and drinking machine

Abstract

The utility model discloses a table type water purifying and drinking machine which comprises a machine shell and a filter element support used for installing a filter element, the machine shell is provided with a containing cavity, the filter element support is arranged in the containing cavity, a main control box is further arranged in the containing cavity, an installation groove used for installing a circuit board is formed in the main control box, and the two sides of the main control box are fixed to the inner side wall of the filter element support and the inner side wall of the machine shell respectively. And an opening of the mounting groove faces a gap between the filter element bracket and the shell. According to the utility model, the mounting groove of the main control box adopts an open structure, so that the heat dissipation effect of the circuit board can be enhanced, and when the table-type water purifying and drinking machine breaks down and needs to overhaul the circuit board, a worker can directly check and overhaul the circuit board in the mounting groove through a gap between the filter element bracket and the machine shell, so that the overhaul difficulty is greatly reduced, and the overhaul efficiency is improved. Maintenance time is saved, and maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the field of drinking water equipment, and in particular relates to a desktop drinking water purifier. Background Art

[0002] At present, the main control box of the existing desktop water purifier usually adopts the assembly method of the upper and lower covers. The circuit board is arranged in the cavity formed by the upper and lower covers. There are many structural assemblies. When the circuit board needs to be repaired, the staff must first remove the main control box from the inside of the desktop water purifier, and then open the upper and lower covers that are fastened together before they can repair the circuit board. The operation is very inconvenient, and the closed electric control box structure makes the heat dissipation effect of the circuit board arranged inside it poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a desktop water purifier to solve at least one of the above problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a desktop water purifier, comprising a casing and a filter cartridge holder for installing a filter cartridge, the casing having a accommodating cavity, the filter cartridge holder being arranged in the accommodating cavity, a main control box being also arranged in the accommodating cavity, the main control box being provided with a mounting groove for installing a circuit board, two sides of the main control box being respectively fixed on the filter cartridge holder and the inner side wall of the casing, so that the opening of the mounting groove is arranged toward the gap between the filter cartridge holder and the casing.

[0005] In the above-mentioned desktop water purifier, the main control box includes a partition and an annular baffle. The partition is vertically arranged, and the annular baffle surrounds the edge of the partition and extends to both sides of the partition to form two installation grooves with opposite openings on both sides of the partition.

[0006] In the above-mentioned desktop water purifier, a positioning protrusion is provided on the filter element bracket, and a positioning groove is provided on the top of the main control box. The positioning protrusion is inserted into the positioning groove and locked with the positioning groove through a locking member.

[0007] In the above-mentioned desktop water purifier, a first guide rail extending longitudinally is provided on the side of the filter element bracket, and a second guide rail is provided on the side of the main control box. The second guide rail is slidably connected to the first guide rail to guide the installation of the main control box when the main control box and the filter element bracket are assembled.

[0008] In the above-mentioned desktop water purifier, the first guide rail includes two guide ribs extending longitudinally along the surface of the filter element bracket, and the second guide rail includes two limit ribs extending longitudinally along the surface of the main control box, and the opposite surfaces of the two guide ribs are respectively against the two limit ribs.

[0009] In the above-mentioned desktop water purifier, the first guide rail is a slide groove arranged on the side of the filter element bracket, and the second guide rail is a guide protrusion arranged on the side of the main control box. The guide protrusion is inserted into the slide groove and abuts against the two inner walls opposite to the slide groove.

[0010] In the above-mentioned desktop water purifier, the casing includes a back plate for mounting the main control box, the back plate is provided with a limiting groove, the side of the main control box is embedded in the limiting groove and abuts against the inner side wall of the limiting groove.

[0011] In the above-mentioned desktop water purifier, a ring-shaped positioning rib is provided on the back plate, and the positioning rib protrudes toward the accommodating cavity to form a limiting groove; or the back plate is recessed toward a side away from the accommodating cavity to form a limiting groove.

[0012] In the above-mentioned desktop water purifier, two mounting columns are arranged on the back plate, and the two mounting columns are respectively located at two diagonally opposite corners of the limiting groove, and the main control box is locked on the mounting columns by screws.

[0013] In the above-mentioned desktop water purifier, strip ribs are provided on the top and / or bottom of the main control box, and both ends of the strip ribs are connected to the main control box to form a threading hole for threading the wires together with the main control box.

[0014] The beneficial effects of the utility model are:

[0015] A desktop water purifier includes a housing and a filter element holder for installing a filter element, the housing has a receiving cavity, the filter element holder is arranged in the receiving cavity, a main control box is also arranged in the receiving cavity, the main control box is provided with a mounting groove for installing a circuit board, and two sides of the main control box are respectively fixed to the filter element holder and the inner side wall of the housing, so that the opening of the mounting groove is arranged toward the gap between the filter element holder and the housing. The technical solution has the following technical effects:

[0016] The utility model sets an open installation slot on the main control box for installing the circuit board, and connects the two sides of the main control box to the filter element bracket and the inner wall of the casing respectively, so that the opening of the installation slot is set toward the gap between the filter element bracket and the casing. The installation slot of the main control box adopts an open structure, which can enhance the heat dissipation effect of the circuit board under the premise of complying with safety regulations. The structure of the main control box is simple and there is no special structural design, which can reduce the production cost of the main control box. When the desktop water purifier fails and the circuit board needs to be repaired, the staff does not need to remove the main control box from the casing and the filter element bracket, nor does it need to open the main control box. The circuit board in the installation slot can be directly checked and repaired through the gap between the filter element bracket and the casing, which greatly reduces the difficulty of maintenance, saves maintenance time, and improves maintenance efficiency. By setting the opening of the installation slot toward the side, the top of the installation slot can also protect the circuit board to prevent water entering the casing from dripping onto the circuit board and causing damage to the circuit board, thereby extending the service life of the circuit board.

[0017] The main control box includes a partition and an annular baffle. The partition is arranged vertically. The annular baffle surrounds the edge of the partition and extends to both sides of the partition to form two installation slots with opposite openings on both sides of the partition. The setting of the double installation slots allows the staff to install a single circuit board in any installation slot as needed during assembly if there is only one circuit board. If there are more than one circuit board, the staff can install the extra circuit board in another installation slot, thus achieving optimal assembly with multiple direction options.

[0018] The filter element bracket is provided with a positioning protrusion, and the top of the main control box is provided with a positioning groove. The positioning protrusion is inserted into the positioning groove and locked with the positioning groove through a locking member. The arrangement of the positioning protrusion and the positioning groove enables the main control box and the filter element bracket to be quickly installed and positioned through the inserted positioning protrusion and the positioning groove when assembling, thereby improving assembly efficiency.

[0019] A first guide rail extending longitudinally is provided on the side of the filter element bracket, and a second guide rail is provided on the side of the main control box. The second guide rail is slidably connected to the first guide rail to guide the main control box when the main control box and the filter element bracket are assembled. When the main control box and the filter element bracket are assembled, the first guide rail and the second guide rail can be slidably connected to align the main control box and the filter element bracket, thereby reducing the difficulty of assembling the main control box and the filter element bracket.

[0020] The first guide rail includes two guide ribs extending longitudinally along the surface of the filter element support, and the second guide rail includes two limit ribs extending longitudinally along the surface of the main control box, and the opposite surfaces of the two guide ribs are respectively against the two limit ribs. When installing the main control box, the main control box can slide along the guide ribs, which greatly reduces the difficulty of installation, and the filter element support can limit the main control box in the horizontal direction through the guide ribs, so that the installation between the main control box and the filter element support is more stable and prevents the two from being freely disengaged.

[0021] The housing includes a back plate for mounting the main control box, and a limit groove is provided on the back plate. The side of the main control box is embedded in the limit groove and abuts against the inner side wall of the limit groove. The setting of the limit groove can realize the rapid installation and positioning of the main control box on the back plate during installation, and can also limit the main control box on the back plate to prevent the main control box from sliding along the surface of the back plate, thereby ensuring the stability of the installation between the main control box and the back plate.

[0022] There are two mounting posts on the back panel, which are located at two diagonally opposite corners of the limit slot. The main control box is locked on the mounting posts by screws. The mounting posts lock the back panel and the main control box to prevent the main control box from being freely separated from the back panel under the influence of factors such as vibration. The two mounting posts are located at two diagonally opposite corners of the limit slot, which can enhance the installation stability of the main control box as much as possible while reducing the number of mounting posts to reduce assembly steps.

[0023] The top and / or bottom of the main control box is provided with a strip rib, and both ends of the strip rib are connected to the main control box to form a threading hole for passing the wires together with the main control box. The threading hole is used to pass the wires extending from the circuit board, which has the effect of arranging and centralizing the wires, reducing safety risks, optimizing wiring, and making the inside of the housing tidier.

[0024] The features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0026] Figure 1 It is a three-dimensional diagram of a desktop water purifier in Example 1;

[0027] Figure 2 is a three-dimensional diagram of the filter element support in Example 1;

[0028] Figure 3 This is a schematic diagram of the assembly of the back plate, the main control box and the filter element bracket in the first embodiment;

[0029] Figure 4 This is an exploded view of the back panel, main control box and filter element bracket in Example 1;

[0030] Figure 5 It is a three-dimensional diagram of the main control box in the first embodiment;

[0031] Figure 6 It is a cross-sectional view of the main control box in the first embodiment.

[0032] Reference numerals:

[0033] 100, housing; 110, back plate; 111, limiting groove; 112, positioning rib; 113, mounting column;

[0034] 200. Circuit board;

[0035] 300, filter element bracket; 310, cylinder; 311, positioning protrusion; 312, guide rib;

[0036] 400, main control box; 410, partition; 420, annular baffle; 430, mounting groove; 440, positioning groove; 450, limiting convex rib; 460, strip rib; 461, threading hole;

[0037] 500. Filter element. DETAILED DESCRIPTION

[0038] The utility model proposes a desktop water purifier, including a casing and a filter holder for installing a filter, the casing has a receiving chamber, the filter holder is arranged in the receiving chamber, a main control box is also arranged in the receiving chamber, the main control box is provided with a mounting groove for installing a circuit board, and the two sides of the main control box are respectively fixed on the filter holder and the inner side wall of the casing, so that the opening of the mounting groove is arranged toward the gap between the filter holder and the casing. The utility model sets an open mounting groove on the main control box for installing the circuit board, and connects the two sides of the main control box to the filter holder and the inner side wall of the casing, so that the opening of the mounting groove is arranged toward the gap between the filter holder and the casing. The mounting groove of the main control box adopts an open structure, which can enhance the heat dissipation effect of the circuit board under the premise of complying with safety regulations, and the structure of the main control box is simple, without special structural design, which can reduce the production cost of the main control box. When a desktop water purifier breaks down and the circuit board needs to be repaired, the staff does not need to remove the main control box from the casing and the filter element bracket, nor does they need to open the main control box. They can directly view and repair the circuit board in the installation slot through the gap between the filter element bracket and the casing, which greatly reduces the difficulty of maintenance, saves maintenance time, and improves maintenance efficiency. By setting the opening of the installation slot to the side, the top of the installation slot can also protect the circuit board to prevent water entering the casing from dripping onto the circuit board and causing damage to the circuit board, thereby extending the service life of the circuit board.

[0039] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] Embodiment 1:

[0045] A desktop water purifier, such as Figures 1 to 6 As shown, it includes a housing 100, a filter element 500 and a filter element bracket 300. The housing 100 has a receiving cavity, the filter element bracket 300 is arranged in the receiving cavity, the filter element 500 is installed on the filter element bracket 300, and a main control box 400 is also arranged in the receiving cavity. The main control box 400 is provided with a mounting groove 430, and the circuit board 200 is installed in the mounting groove 430 of the main control box 400. There is a gap between the filter element bracket 300 and the inner side wall of the housing 100, and the main control box 400 is arranged in the gap. One side of the main control box 400 is fixed to the filter element bracket 300, and the other side is fixed to the inner side wall of the housing 100, so that the opening of the mounting groove 430 is open and arranged toward the gap between the filter element bracket 300 and the housing 100.

[0046] The utility model sets an open installation groove 430 on the main control box 400 for installing the circuit board 200, and connects the two sides of the main control box 400 to the inner wall of the filter element bracket 300 and the housing 100 respectively, so that the opening of the installation groove 430 is set toward the gap between the filter element bracket 300 and the housing 100. The installation groove 430 of the main control box 400 adopts an open structure. Under the premise of complying with safety regulations, the heat dissipation effect of the circuit board 200 can be enhanced. The structure of the main control box 400 is simple, without special structural design, and the production cost of the main control box 400 can be reduced. When a malfunction occurs in the desktop water purifier and the circuit board 200 needs to be repaired, the staff does not need to remove the main control box 400 from the casing 100 and the filter element holder 300, nor does they need to open the main control box 400. They can directly view and repair the circuit board 200 in the installation slot 430 through the gap between the filter element holder 300 and the casing 100, which greatly reduces the difficulty of maintenance, saves maintenance time, and improves maintenance efficiency. By setting the opening of the installation slot 430 toward the side, the top of the installation slot 430 can also protect the circuit board 200, thereby preventing water entering the casing 100 from dripping onto the circuit board 200 and causing damage to the circuit board 200, thereby extending the service life of the circuit board 200.

[0047] The main control box 400 of this embodiment may be provided with only one mounting slot 430, or may be provided with two mounting slots 430 with opposite openings, such as Figure 5 and Figure 6 As shown, the main control box 400 includes a partition 410 and an annular baffle 420. The partition 410 is arranged vertically, the annular baffle 420 is perpendicular to the partition 410 and surrounds the edge of the partition 410, and the annular baffle 420 extends to both sides of the partition 410 to form two mounting grooves 430. The two mounting grooves 430 are respectively located on both sides of the partition 410 and have opposite openings. The setting of the double mounting grooves 430 allows the staff to install the single circuit board 200 in any mounting groove 430 as needed during assembly if there is only one circuit board 200, and if there is more than one circuit board 200, the staff can install the extra circuit board 200 in another mounting groove 430, so as to achieve the optimal assembly with multi-directional selection.

[0048] The top and bottom of the main control box 400 are provided with strip ribs 460, respectively. The two ends of the strip ribs 460 at the top of the main control box 400 are connected to the top surface of the annular baffle 420 to form a threading hole 461 together with the annular baffle 420. The two ends of the strip ribs 460 at the bottom of the main control box 400 are connected to the bottom surface of the annular baffle 420 to form a threading hole 461 together with the annular baffle 420. The threading hole 461 is used to pass the wires extending from the circuit board 200, which has the effect of arranging and centrally storing the wires, reducing safety risks, optimizing wiring, and making the inside of the housing 100 tidier. Of course, it is understandable that the strip ribs 460 can also be provided only at the top or bottom of the main control box 400.

[0049] The filter element holder 300 in this embodiment includes a cylinder 310 with a vertically arranged central axis, and the filter bottle is vertically inserted in the cylinder 310. A positioning protrusion 311 is provided on the outer wall of the top of the cylinder 310, and a positioning groove 440 is provided on one side of the top of the main control box 400. The positioning groove 440 is provided on the annular baffle 420. When the main control box 400 and the filter element holder 300 are in an assembled state, the positioning protrusion 311 is inserted into the positioning groove 440, and locking members such as screws pass through the positioning protrusion 311 and extend into the inner wall of the positioning groove 440 to lock the main control box 400 and the filter element holder 300. The setting of the positioning protrusion 311 and the positioning groove 440 enables the main control box 400 and the filter element holder 300 to be quickly installed and positioned through the plugged positioning protrusion 311 and the positioning groove 440 when assembling the main control box 400 and the filter element holder 300, thereby improving the assembly efficiency.

[0050] A first guide rail extending longitudinally is also provided on the outer side wall of the cylinder 310, and a second guide rail is provided on the side of the main control box 400. The second guide rail is located on the outer side wall of the annular baffle 420 away from the mounting groove 430. When assembling the main control box 400 and the filter element bracket 300, the first guide rail and the second guide rail can be slidably connected to each other to align the main control box 400 and the filter element bracket 300, thereby reducing the difficulty of assembling the main control box 400 and the filter element bracket 300. In this embodiment, preferably, Figure 3 and Figure 4As shown, the first guide rail includes two guide ribs 312 protruding from the outer wall of the cylinder 310, the two guide ribs 312 are arranged in parallel and extend longitudinally along the outer wall of the cylinder 310, and the second guide rail includes two limiting ribs 450 protruding from the outer surface of the main control box 400, the two limiting ribs 450 extend longitudinally along the surface of the annular baffle 420, the two limiting ribs 450 are located between the two guide ribs 312, and the two limiting ribs 450 are respectively connected to the two guide ribs 312. The opposing surfaces abut against each other, and the positioning protrusion 311 is located at the top of the gap between the two guide ribs 312. When installing the main control box 400, the main control box 400 can slide along the guide rib 312 until the positioning protrusion 311 is plugged into the positioning groove 440, which greatly reduces the difficulty of installation. The filter element bracket 300 can limit the main control box 400 in the horizontal direction through the guide rib 312, so that the installation between the main control box 400 and the filter element bracket 300 is more stable, preventing the two from being freely detached.

[0051] like Figure 4 As shown, the casing 100 includes a plurality of vertically arranged side panels, wherein the side panel for installing the main control box 400 is the back panel 110, and a limiting groove 111 is provided on the side of the back panel 110 facing the main control box 400. When the main control box 400 and the back panel 110 are in an assembled state, the annular baffle 420 on the side of the main control box 400 is embedded in the limiting groove 111 and abuts against the inner side wall of the limiting groove 111. The setting of the limiting groove 111 can realize the rapid installation and positioning of the main control box 400 on the back panel 110 during installation, and can also limit the main control box 400 on the back panel 110 to prevent the main control box 400 from sliding along the surface of the back panel 110, thereby ensuring the stability of the installation between the main control box 400 and the back panel 110. The limiting groove 111 in this embodiment can be surrounded by positioning ribs 112 protruding from the surface of the back plate 110, or can be formed by the back plate 110 being recessed toward the side away from the accommodating cavity. Preferably, a positioning rib 112 is provided on the back plate 110, and the positioning rib 112 protrudes from the surface of the back plate 110 toward the accommodating cavity to surround the limiting groove 111, thereby reducing the thickness requirement for the back plate 110 and reducing the difficulty of processing the back plate 110.

[0052] In order to further lock the back panel 110 and the main control box 400 and prevent the main control box 400 from freely detaching from the back panel 110 due to factors such as vibration, the present embodiment provides two mounting posts 113 on the back panel 110, and the main control box 400 is locked on the mounting posts 113 by screws. Preferably, the two mounting posts 113 are respectively located at two diagonally opposite corners of the limiting groove 111, so as to enhance the installation stability of the main control box 400 as much as possible and reduce the number of mounting posts 113, thereby reducing the number of assembly steps.

[0053] Embodiment 2:

[0054] The difference between this embodiment and embodiment one is that, in this embodiment, the first guide rail is a slide groove, which is arranged on the side of the filter element holder, and the second guide rail is a guide protrusion, which is arranged on the side of the main control box. When the main control box and the filter element holder are in an assembled state, the guide protrusion is inserted into the slide groove, and the side wall of the guide protrusion is abutted against the two inner walls opposite to the slide groove to limit the guide protrusion. The setting of the slide groove can reduce the volume of the filter element holder, thereby reducing the space occupied by the filter element holder in the accommodating cavity.

[0055] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A tabletop water purifier, comprising a housing and a filter element holder for mounting a filter element, wherein the housing has a receiving cavity, and the filter element holder is arranged in the receiving cavity, characterized in that: A main control box is also provided in the accommodating cavity, and a mounting groove for mounting a circuit board is provided on the main control box. Both sides of the main control box are respectively fixed to the filter element bracket and the inner side wall of the casing, so that the opening of the mounting groove is arranged toward the gap between the filter element bracket and the casing.

2. The tabletop water purifier according to claim 1, characterized in that: The main control box includes a partition and an annular baffle. The partition is vertically arranged. The annular baffle surrounds the edge of the partition and extends to both sides of the partition to form two installation grooves with opposite openings on both sides of the partition.

3. A desktop water purifier according to claim 1 or 2, characterized in that: The filter element bracket is provided with a positioning protrusion, and the top of the main control box is provided with a positioning groove. The positioning protrusion is inserted into the positioning groove and locked with the positioning groove through a locking member.

4. The tabletop water purifier according to claim 3, characterized in that: A first guide rail extending longitudinally is provided on the side of the filter element bracket, and a second guide rail is provided on the side of the main control box. The second guide rail is slidably connected to the first guide rail to guide the installation of the main control box when the main control box and the filter element bracket are assembled.

5. The tabletop water purifier according to claim 4, characterized in that: The first guide rail includes two guide ribs extending longitudinally along the surface of the filter element bracket, and the second guide rail includes two limit ribs extending longitudinally along the surface of the main control box, and the opposite surfaces of the two guide ribs are respectively against the two limit ribs.

6. The tabletop water purifier according to claim 4, characterized in that: The first guide rail is a slide groove provided on the side of the filter element bracket, and the second guide rail is a guide protrusion provided on the side of the main control box. The guide protrusion is inserted into the slide groove and abuts against two inner walls opposite to the slide groove.

7. The tabletop water purifier according to claim 1, characterized in that: The housing comprises a back plate for mounting the main control box, the back plate is provided with a limiting groove, the side portion of the main control box is embedded in the limiting groove and abuts against the inner side wall of the limiting groove.

8. The tabletop water purifier according to claim 7, characterized in that: The back plate is provided with an annular positioning convex rib, and the positioning convex rib protrudes toward the accommodating cavity to enclose the limiting groove; or the back plate is recessed toward a side away from the accommodating cavity to form the limiting groove.

9. The tabletop water purifier according to claim 7, characterized in that: The back plate is provided with two mounting posts, which are respectively located at two diagonally opposite corners of the limiting groove, and the main control box is fastened to the mounting posts by screws.

10. The tabletop water purifier according to claim 1, characterized in that: The top and / or bottom of the main control box is provided with a strip rib, and both ends of the strip rib are connected to the main control box to form a threading hole for threading a wire together with the main control box.

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