A controller

Abstract

The utility model discloses a kind of controllers, including: shell, its inside formation accommodating space, the main control board of controller is located in the accommodating space, the front of the shell is formed with: maintenance opening;Accommodation portion, first hooking portion is formed in it;Card set portion, including insertion portion and limiting portion who communicate with each other;Maintenance cover, it is detachably installed to the front of shell to expose or shield the maintenance opening, maintenance cover has second hooking portion in the front end of its installation direction, maintenance cover further includes: hooking portion, by insertion portion insertion and when maintenance cover is installed in place, hooking portion is clamped on the inner side wall of the limiting portion, for preventing maintenance cover from separating from the front. The utility model can simplify controller maintenance operation by disassembling and assembling maintenance cover, and maintenance cover meets the needs of firm and convenient disassembly and assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of controller, especially a kind of controller. BACKGROUND

[0002] In new generation intelligent device control system, controller is usually installed on wall surface, for user operation, therefore, when controller has problem or needs maintenance, maintenance personnel needs to disassemble shell to open controller, and after completion, install fixed shell, this dismounting process is tedious, and each time dismounting shell, task amount is large. SUMMARY

[0003] For the problems pointed out in the background art, some embodiments of the present application relate to a kind of controller, can be exposed or shielded by setting detachable maintenance cover to maintenance opening, maintenance personnel can complete maintenance task through maintenance opening, and the maintenance cover is connected by front end hooking and rear end clamping in its installation direction, realize the problems of firm installation and easy dismounting, reduce the task amount of maintenance personnel dismounting.

[0004] To achieve the above-mentioned utility model purposes, the utility model adopts the following technical solutions:

[0005] An embodiment of the present application provides a kind of controller, comprising:

[0006] Shell, its inside forms containing space, the main control board of the controller is located in the containing space, the front of the shell is formed with:

[0007] Maintenance opening, which is communicated with the containing space;

[0008] Accommodation portion, which is formed with a first hooking portion inside;

[0009] Clamping portion, which is communicated with the containing space and includes an insertion portion and a limiting portion;

[0010] Maintenance cover, which is detachably mounted to the front of the shell to expose or shield the maintenance opening, the maintenance cover has a second hooking portion at the front end in its installation direction, for when the maintenance cover is installed in place, the second hooking portion extends into the containing portion and hooks the first hooking portion, the maintenance cover further includes:

[0011] Hooking portion, which is inserted through the insertion portion and clamped on the inner side wall of the limiting portion when the maintenance cover is installed in place, for preventing the maintenance cover from separating from the front;

[0012] Wherein, the opening width of the insertion portion perpendicular to the installation direction is greater than the opening width of the limiting portion perpendicular to the installation direction.

[0013] The embodiments involved in the application have the following advantages and beneficial effects:

[0014] By arranging the maintenance opening on the front surface of the shell and the maintenance cover which can be detached to expose / cover the maintenance opening, the maintenance personnel can perform maintenance through the maintenance opening without detaching the shell when the controller is maintained, only the maintenance cover is detached, the operation is simple and the task is not heavy.

[0015] The hooking of the second hooking part of the maintenance cover and the first hooking part in the shell ensures the stability of the front end, and the clamping of the hanging part and the clamping part ensures the anti-uplift of the rear end of the maintenance cover, so that the maintenance cover is stably installed; when disassembling, the hooking of the first hooking part and the second hooking part is overcome by force, the hanging part is pushed out of the insertion part, and the maintenance plate can be disassembled, so that the disassembly process is convenient and fast.

[0016] In some embodiments of the application, the first hooking part is arranged on the inner side wall of the accommodating part facing the front surface of the shell, and the first hooking part has:

[0017] a first side surface inclined towards the installation direction of the maintenance cover;

[0018] a second side surface opposite to the first side surface, the second side surface is inclined to extend so that the free end of the second side surface is close to the free end of the first side surface;

[0019] the second hooking part has an inner side surface matched with the second side surface;

[0020] When the maintenance cover is installed in place, the second hooking part hooks the second side surface and the second side surface is in close contact with the inner side surface.

[0021] The embodiments involved in the application have the following advantages and beneficial effects:

[0022] By arranging the two inclined side surfaces of the first hooking part opposite to each other, the convenient hooking is realized by the guiding effect of the first side surface when the maintenance cover is installed, and the convenient disengagement from the hooking is realized by the guiding effect of the second side surface when the maintenance cover is disassembled, so that the disassembly convenience of the maintenance cover is improved.

[0023] In some embodiments of the application, the maintenance cover includes a front panel and a side panel butt-jointed with the front panel;

[0024] the free end of the front panel is provided with the second hooking part, and the inner side wall at the free end of the side panel is provided with an embedding part, and when the maintenance cover is installed in place, the embedding part is embedded in the receiving part of the shell.

[0025] The embodiments involved in the application have the following advantages and beneficial effects:

[0026] By setting the embedding part and the receiving part, the installation stability of the side panel of the maintenance plate is ensured, and the installation strength of the whole maintenance plate is improved.

[0027] In some embodiments of the present application, a plurality of first heat dissipation holes are arranged on the shell and communicate with the accommodation space.

[0028] A plurality of second heat dissipation holes are arranged on the side panel, and the plurality of second heat dissipation holes correspond one-to-one to the plurality of first heat dissipation holes when the maintenance cover is installed in place.

[0029] The embodiments involved in the present application have the following advantages and beneficial effects:

[0030] By arranging the heat dissipation holes, the electrical devices in the controller can work normally, and damage to the electrical devices caused by excessive temperature in the accommodation space is avoided, thereby affecting the normal use of the controller.

[0031] In some embodiments of the present application, the number of accommodation parts, the number of clamping parts, and the number of hanging parts are two respectively, and are arranged oppositely in a direction perpendicular to the detachable direction of the maintenance cover.

[0032] The embodiments involved in the present application have the following advantages and beneficial effects:

[0033] The opposite arrangement structure is helpful to uniform stress of the maintenance cover during disassembly and assembly, and the two same structures ensure the installation reliability.

[0034] In some embodiments of the present application, the maintenance cover further comprises:

[0035] A guide rib plate is formed on the back surface of the maintenance cover and extends away from the back surface of the maintenance cover, and the hanging part is formed on the guide rib plate.

[0036] The clamping part further comprises an extension part which communicates with the insertion part and the limiting part respectively, and the limiting part is located between the extension part and the insertion part.

[0037] During the sliding installation of the maintenance cover, the guide rib plate slides in the direction of the clamping part.

[0038] The embodiments involved in the present application have the following advantages and beneficial effects:

[0039] By setting the guide rib plate to move in the clamping part, the installation of the maintenance cover can be conveniently guided, and the installation efficiency of the maintenance cover is improved.

[0040] In some embodiments of the present application, an avoiding part of the avoiding guide rail is arranged on the back surface of the shell; and the controller comprises:

[0041] A plurality of connecting portions are arranged on the back surface of the housing and are located on both sides of the avoiding portion along the extending direction of the avoiding portion, and the connecting portions are provided with through portions and are switchable between a first position and a second position;

[0042] When the controller is mounted on the guide rail, the plurality of connecting portions are in the first position and the end portions of the plurality of connecting portions extend into the avoiding portion to clamp the first flange and the second flange of the guide rail;

[0043] When the plurality of connecting portions are in the second position, the end portions of the plurality of connecting portions extend away from the avoiding portion to release the guide rail.

[0044] The embodiments related in the present application have the following advantages and beneficial effects:

[0045] By arranging the plurality of connecting portions, and clamping the guide rail by the plurality of connecting portions respectively when the plurality of connecting portions are in the first position, the controller is mounted on the guide rail, and the guide rail is released when the plurality of connecting portions are in the second position, so that the controller can be used independently.

[0046] In some embodiments of the present application, the connecting portion is provided with a through portion;

[0047] When the connecting portion is in the first position, the through portion of the connecting portion is at least partially shielded by the housing;

[0048] When the connecting portion is in the second position, the through portion of the connecting portion extends out of the housing to expose the through portion, and the controller can be fixed via a fastener passing through the through portion.

[0049] The embodiments related in the present application have the following advantages and beneficial effects:

[0050] By arranging the through portion in the connecting portion, the guide rail is released when the plurality of connecting portions are in the second position, so that the controller can be used independently, and the independent installation of the controller can be realized by the cooperation of the through portion of the connecting portion in the second position and the fastener.

[0051] In this way, the installation and use environment of the controller can be expanded, and the installation and use flexibility can be improved.

[0052] In some embodiments of the present application, the back surface of the housing is provided with a wall hanging hole;

[0053] When the controller is mounted on the wall, the housing is hung and fixed on the first fastener on the wall surface through the wall hanging hole, or the housing is hung and fixed on the first fastener on the wall surface through the wall hanging hole, and at least one connecting portion is in the second position and is fixed on the wall surface via a second fastener passing through the through portion;

[0054] When the controller is fixedly installed on the wall, the at least one connecting part on one side of the avoiding part and the at least one connecting part on the other side of the avoiding part are both in the second position and are fixed to the wall via the third fasteners passing through the corresponding through parts.

[0055] The embodiments involved in the present application have the following advantages and beneficial effects:

[0056] When the controller is wall-mounted on the wall, the connecting part is switched to the second position to release the guide rail, the shell is fixed on the first fastener on the wall through the wall hole, and is fixed on the wall via the second fastener passing through the through part of the at least one connecting part, at this time, the remaining connecting parts not used can be in the first position; when the controller is fixedly installed on the wall, the connecting part is switched to the second position to release the guide rail, and is fixed on the wall via the third fastener passing through the through part of the at least one connecting part on one side of the avoiding part and the at least one connecting part on the other side of the avoiding part, at this time, the remaining connecting parts not used can be in the first position, so that the wall-mounted installation and the fixed installation of the controller can be realized, and the flexibility of the installation scene of the controller is improved.

[0057] In some embodiments of the present application, the controller further comprises:

[0058] A plurality of guide parts corresponding to the plurality of connecting parts are arranged on the back of the shell, the guide parts extend in a direction perpendicular to the extending direction of the avoiding part, one end of the guide part away from the avoiding part is in communication with the outside, and the other end of the guide part close to the avoiding part is in communication with the avoiding part.

[0059] When the connecting part slides in the guide part along the first direction, the connecting part is switched from the first position to the second position, and when the connecting part slides in the guide part along the second direction, the connecting part is switched from the second position to the first position.

[0060] The embodiments involved in the present application have the following advantages and beneficial effects:

[0061] By arranging a plurality of guide parts, a plurality of connecting parts can be slidably matched, and the switching between the first position and the second position of the connecting part is realized in a sliding switching mode.

[0062] Other features and advantages of the present application will become more apparent after reading the specific embodiments of the present application in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0063] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0064] Figure 1 Partial breakdown of the controller embodiments proposed in this application Figure 1 ;

[0065] Figure 2 This is a structural diagram of the maintenance cover in the controller embodiment proposed in this application;

[0066] Figure 3 This is a front view of a controller embodiment according to this application, wherein the connecting portion is located in a first position;

[0067] Figure 4 This is a front view of the controller embodiment according to this application after the maintenance cover has been removed;

[0068] Figure 5 For along Figure 4 A cross-sectional view along the HH direction;

[0069] Figure 6 Partial breakdown of the controller embodiments proposed in this application Figure 3 ;

[0070] Figure 7 For along Figure 3 A cross-sectional view shown in the DD direction;

[0071] Figure 8 For along Figure 3 A cross-sectional view shown in the CC direction;

[0072] Figure 9 This is an installation diagram of the controller according to the embodiment of this application mounted on the guide rail at a first angle;

[0073] Figure 10 This is an installation diagram of the controller according to the embodiment of this application mounted on the guide rail at a second angle;

[0074] Figure 11 This is a rear view of a controller embodiment according to this application, wherein the connecting portion is located in a first position;

[0075] Figure 12 This is a left view of an embodiment of the controller proposed in this application;

[0076] Figure 13 For along Figure 11a sectional view taken along the direction of arrow B-B;

[0077] Figure 14 partial exploded view of an embodiment of a controller according to the present application Figure 2 ;

[0078] Figure 15 partial exploded view of an embodiment of a controller according to the present application Figure 14

[0079] Figure 16 structure view of a connection portion in a first angle and a second angle of an embodiment of a controller according to the present application

[0080] Figure 17 rear view of an embodiment of a controller according to the present application, wherein the connection portion is in a second position

[0081] Figure 18 partial exploded view of an embodiment of a controller according to the present application Figure 17

[0082] Figure 19 front view of an embodiment of a controller according to the present application, wherein the connection portion is in a second position

[0083] Reference Signs:

[0084] 1000, controller; 100, housing; 110, upper housing; 111, front face; 111A, maintenance opening; 111B / 111C, accommodating portion; 111B1, first hooking portion; 111B2, second side face; 111B3, first side face; 111D / 111E, clamping portion; 111D1, insertion portion; 111D2, limiting portion; 111D3, extension portion; 112, first heat dissipation hole; 112A / 112B, receiving groove; 120, lower housing; 121, avoiding portion; 1211, bottom wall; 1212, upper side wall; 1213, lower side wall; 122 / 122A / 122B, guiding portion; 1221, first back side wall; 1221A, second back side wall; 1222 / 1222A, limiting groove; 1223 / 1223A, first clamping portion; 1224 / 1224A, second clamping portion; 1225, first chamfer; 1226, second chamfer; 123 / 123A, wall hanging hole; 130, maintenance cover; 131, front panel; 132, side panel; 133 / 134, second hooking portion; 135 / 137, guiding rib plate; 136, protrusion; 138 / 138A, embedded column; 200 / 200A / 200B, connection portion; 210, clamping portion; 220, through portion; 230, second cantilever; 231, limiting sliding block; 232, second through hole; 240, first cantilever; 241, clamping protrusion; 2411, rounded corner; 242, first through hole;

[0085] ​​2000, rail; 2100, middle U-shaped part; 2200, first flange. DETAILED DESCRIPTION

[0086] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0087] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the present application.

[0088] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0089] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0090] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "above", "upper" and "upper surface" of the first feature to the second feature include the vertical direction of the first feature above and obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical direction of the first feature below and obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0091] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. For the sake of simplicity, the description below of a particular embodiment or example does not necessarily include all features that are characteristic of the present application. Of course, this application can be practiced with the inclusion of other features and / or the exclusion of some or all features described below. Additionally, many modifications and variations of the embodiments described herein are possible and will be appreciated by those of ordinary skill in the art in light of the teachings herein. Also, it is contemplated that embodiments can be practiced in different systems than the one described and / or in different environments than the one described. Further, it is contemplated that one or more features of the embodiments described can be implemented by hardware, software, firmware, middleware or any combination thereof and that the scope of the present application is not limited by the particular type of implementation used.

[0092] A controller is often equipped in a power distribution box of a new generation of intelligent device (for example, an intelligent building device), and the controller can be used to control the intelligent building device (for example, an air conditioner, an elevator). However, the controller also needs to be maintained frequently, and therefore, a flexible and convenient controller is needed.

[0093] In some embodiments of the present application, the controller can be a DDC controller (Direct Digital Controller) or a PLC controller (Programmable Logic Controller), and the controller can be used to control an air conditioning system, a hot water system, a fresh air system, a lighting system, an elevator system and the like.

[0094] Referring to Figures 1 to 18 In some embodiments of the present application, a controller 1000 is provided, which includes a housing 100 and a main control board (not shown).

[0095] The housing 100 forms the appearance of the controller 1000, and the housing 100 internally forms an accommodation space, and the main control board is arranged in the accommodation space.

[0096] In some embodiments of the present application, the housing 100 can include an upper housing 110, a lower housing 120 and a maintenance cover 130, the upper housing 110 and the lower housing 120 are connected and enclosed to form the accommodation space, a maintenance opening 111A is formed on the front surface 111 of the upper housing 110, and the maintenance cover 130 is detachably mounted on the upper housing 110 and covers / exposes the maintenance opening 111A.

[0097] When maintenance is performed, a maintenance personnel detaches the maintenance cover 130, and performs maintenance or maintenance operation (for example, resetting, copying data, maintenance and the like) on the electrical components in the accommodation space through the maintenance opening 111A.

[0098] In some embodiments of the present application, as described above, referring to Figure 1When the maintenance opening 111A is formed on the front face 111 of the upper shell 110, and in order to facilitate the maintenance of the controller 1000, a detachable maintenance cover 130 is arranged, which is detachably mounted to the front face 111 of the upper shell 110.

[0099] And since the maintenance cover 130 needs to be repeatedly disassembled, the fixing of the maintenance cover 130 needs to meet the requirements of both firm fixing and convenient disassembly.

[0100] In some embodiments of the present application, referring to Figure 1 The front face 111 of the shell 100 is also provided with a receiving portion 111B / 111C and a clamping portion 111D / 111E, both of which are formed on the front face 111 of the upper shell 110 and communicate with the receiving space of the shell 100.

[0101] In some embodiments of the present application, a first hooking portion is formed in the receiving portion, for example, referring to Figure 6 A first hooking portion 111B1 is formed in the receiving portion 111B, which is used to cooperate with the maintenance cover 130 to fix the front end of the maintenance cover 130 in the mounting direction (see the direction indicated by the arrow in Figure 1 and Figure 4 ).

[0102] In some embodiments of the present application, the length extension direction of the clamping portion 111D / 111E is along the mounting direction of the maintenance cover 130.

[0103] In some embodiments of the present application, taking the clamping portion 111D as an example, referring to Figure 6 The clamping portion 111D includes an insertion portion 111D1 and a limiting portion 111D2 which communicate with each other, and the opening width W1 of the insertion portion 111D1 in the direction perpendicular to the mounting direction is greater than the opening width W2 of the limiting portion 111D2 in the direction perpendicular to the mounting direction, so that through such different opening size arrangement, the hooking portion of the maintenance cover 130 is used to realize the anti-uplift fixing of the rear end of the maintenance cover 130 in the mounting direction.

[0104] In some embodiments of the present application, the maintenance cover 130 also includes a hooking portion.

[0105] When the maintenance cover 130 is installed, the hooking portion is inserted through the insertion portion 111D1, and when the maintenance cover 130 is installed in place, the hooking portion is clamped on the inner side wall of the limiting portion 111D2, which is used to prevent the maintenance cover 130 from being lifted up from the front face, so as to achieve the purpose of preventing the rear end of the maintenance cover 130 from being lifted up.

[0106] In some embodiments of the present application, the hooking portion can be a slider capable of being hooked, such as an L-shaped slider, which is formed on the back face of the maintenance cover 130.

[0107] When installed in place, the second hooking portion 133 / 134 of the maintenance cover 130 is inserted into the accommodating portion 111B / 111C and hooks the corresponding first hooking portion (see Figure 8 ), achieving the front end fixation of the maintenance cover 130, and at the same time, since the hooking portion is hooked on the inner side wall of the limiting portion 111D2, when the hooking portion does not disengage from the limiting portion 111D2, the rear end of the maintenance cover 130 will be tightly clamped on the front face 111 of the upper shell 110, so that the rear end of the maintenance cover 130 will not be raised.

[0108] At this time, the maintenance cover 130 is stably installed on the front face 111 of the upper shell 110 and shields the maintenance opening 111A.

[0109] When disassembling the maintenance cover 130, the maintenance cover 130 is pushed in the disassembly direction (i.e., the direction opposite to the installation direction) with force, so that the first hooking portion 111B1 and the second hooking portion 133 are disengaged, and after the hooking portion exits through the insertion portion 111D1, the maintenance cover 130 is rotated, and the disassembly of the maintenance cover 130 is completed.

[0110] It should be noted that, in order to ensure that the maintenance cover 130 is firmly installed and needs to be pushed with relatively large force when disassembled, a pattern (not shown) for increasing friction with fingers can be designed on the front face of the maintenance cover 130.

[0111] In some embodiments of the present application, in order to ensure the stability when the maintenance cover 130 is installed on the shell 100 and the convenience when disassembled, referring to Figures 5 to 8 , the first hooking portion 111B1 is arranged on the inner side wall of the accommodating portion 111B facing the front face 111 of the shell 100.

[0112] Referring to Figure 5 , the first hooking portion 111B1 has an inclined first side surface 111B3 and a second side surface 111B2, and the free end of the first side surface 111B3 and the free end of the second side surface 111B2 are close due to the inclination, so that the first hooking portion 111B1 forms a wedge-shaped portion.

[0113] Correspondingly, referring to Figure 8 , the second hooking portion 133 has an inner side surface matching the second side surface 111B2, that is, the inner side surface is consistent with the inclination direction of the second side surface 111B2, and such matching inclined side surfaces ensure stable assembly.

[0114] When the maintenance cover 130 is installed, the inclined first side surface 111B3 can guide the second hooking portion 133 to pass from the lower side of the first hooking portion 111B1 and be hooked on the second side surface 111B2.

[0115] The inclined second side surface 111B2 not only increases the hooking area with the second hooking part 133 after the maintenance cover 130 is installed in place, but also facilitates the disengagement of the first hooking part 111B1 and the second hooking part 133 when force is applied in the disassembly direction.

[0116] In some embodiments of the present application, referring to Figure 1 and Figure 2 , the maintenance cover 130 further comprises a guide rib plate 135 formed on the back surface of the maintenance cover 130 and extending away from the back surface of the maintenance cover 130.

[0117] A hooking part is formed on the guide rib plate 135, referring to Figure 1 and Figure 2 , a protrusion 136 is provided on one side surface of the guide rib plate 135, which is arranged on the side wall of the guide rib plate 135 to form the hooking part as described above.

[0118] In some embodiments of the present application, other forms of protrusions 136 can also be provided, such as semicircular.

[0119] Correspondingly, in order to accommodate the guide rib plate 135, referring to Figure 6 , the clamping part 111D further comprises an extension part 111D3 which communicates with the insertion part 111D1 and the limiting part 111D2 respectively, and the limiting part 111D2 is located between the extension part 111D3 and the insertion part 111D1.

[0120] During the sliding installation of the maintenance cover 130, the guide rib plate 135 slides in the clamping part 111D, and at the same time the protrusion 136 can be hooked on the inner side wall of the limiting part 111D2.

[0121] In some embodiments of the present application, in order to ensure stable disassembly and assembly of the maintenance cover 130, referring to Figure 6 , the number of accommodating parts 111B / 111C, the number of first hooking parts 111B1, the number of second hooking parts 133 / 134, the number of clamping parts 111D / 111E, and the number of hooking parts are all two, and are arranged opposite to each other in a direction perpendicular to the disassembly and assembly direction of the maintenance cover 130, facilitating uniform force application and reliable disassembly and assembly when disassembling and assembling the maintenance cover 130.

[0122] In some embodiments of the present application, referring to Figure 1 , the maintenance cover 130 comprises a front panel 131 and a side panel 132 which is in abutment with the front panel 131.

[0123] Since many electrical devices are placed in the accommodating space in the shell 100, it is necessary to open heat dissipation holes on the shell 100 to ensure heat dissipation when the electrical devices are working.

[0124] Referring toFigure 1 A plurality of first heat dissipation holes 112 are formed on the side wall of the upper shell 110, and a plurality of second heat dissipation holes are also formed on the side panel 132 of the maintenance cover 130.

[0125] When the maintenance cover 130 is installed in place, the plurality of second heat dissipation holes correspond one-to-one with the plurality of first heat dissipation holes 112.

[0126] In some embodiments of the present application, in order to ensure the installation stability of the side panel 132 of the maintenance cover 130, see Figure 13 A receiving groove 112A / 112B is also formed on the upper shell 110, and see Figure 2 A corresponding embedding column 138 / 138A is formed on the side panel 132 of the maintenance cover 130.

[0127] When the maintenance cover 130 is installed in place, see FIG. 7 and Figure 8 The embedding column 138 / 138A is embedded in the receiving groove 112A / 112B, ensuring the stability of the side panel 132 of the maintenance cover 130, and when the maintenance cover 130 is disassembled, the embedding column 138 / 138A is separated from the receiving groove 112A / 112B.

[0128] In some embodiments of the present application, in order to facilitate the wall-mounted installation and rail installation of the controller 1000, see Figure 10 And Figure 11 The back of the shell 100 is provided with a wall-mounted hole 123 / 123A and a avoiding part 121 that avoids the rail 2000, and the rail 2000 is accommodated at the avoiding part 121 through the avoiding part 121.

[0129] When the shell 100 includes an upper shell 110 and a lower shell 120, the back of the shell 100 refers to the back of the lower shell 120.

[0130] It should be noted that after the controller 1000 is installed, the surface facing the user is the front face 111 of the shell 100, and the back face of the shell 100 opposite to the front face 111.

[0131] In some embodiments of the present application, the controller 1000 further includes a plurality of connecting parts 200 / 200A / 200B, and the plurality of connecting parts 200 / 200A / 200B are also respectively installed on the back of the shell 100 and can be switched between a first position and a second position.

[0132] The connecting parts 200 / 200A / 200B are the same structure, and the mechanism of the connecting part 200 is taken as an example for description.

[0133] See Figure 11The connecting portion 200 is provided with a through portion 220 (for example, a mounting hole). When the connecting portion 200 is located at the first position (see Figure 3 ), the through portion 220 is at least partially shielded by the housing 100 (see Figure 2 ), that is, the through portion 220 is not completely exposed, and at this time, the through portion 220 cannot be used; when the connecting portion 200 is located at the second position (see Figure 4 ), the through portion 220 protrudes beyond the housing 100 to completely expose the through portion 220, and at this time, the through portion 220 can be used.

[0134] In some embodiments of the present application, the plurality of connecting portions are two portions: a first portion and a second portion, each of which includes at least one connecting portion.

[0135] The first portion and the second portion are located on two sides of the avoiding portion 121, respectively, that is, the first portion is located on a first side of the avoiding portion 121 and the second portion is located on a second side of the avoiding portion 121.

[0136] When the first portion includes a plurality of connecting portions, the plurality of connecting portions in the first portion are arranged at intervals on the first side of the avoiding portion 121, and when the second portion includes a plurality of connecting portions, the plurality of connecting portions in the second portion are arranged at intervals on the second side of the avoiding portion 121.

[0137] When the first portion and the second portion each include only one connecting portion, the connecting portion of the first portion and the connecting portion of the second portion are arranged opposite to the avoiding portion 121 to ensure the stability of the installation of the controller 1000 when the connecting portion is fixedly installed.

[0138] When one of the first portion and the second portion has one connecting portion and the other has a plurality of connecting portions, all the connecting portions form a triangular arrangement to ensure the stability of the controller 1000 when the connecting portion is fixedly installed.

[0139] Referring to Figure 9 and Figure 10 , in some embodiments of the present application, there are two connecting portions 200 and 200A on the first side of the avoiding portion 121 and one connecting portion 200B on the second side of the avoiding portion 121, and the three connecting portions 200 / 200A / 200B form a triangular arrangement.

[0140] In some embodiments of the present application, the controller 1000 can be installed on any one of the guide rail 2000 and the wall surface.

[0141] It should be noted that the wall surface can be a vertical wall surface or an inclined wall surface, and the guide rail 2000 can be pasted to the wall surface or fixed to the wall surface by a threaded member.

[0142] In some embodiments of the present application, for the convenience of description, the avoiding portion 121 extends along Figure 11 The solid arrow direction shown is the length extension direction of the avoiding portion 121, denoted as left-right extension, the first side of the avoiding portion 121 is the upper side and the second side of the avoiding portion 121 is the lower side.

[0143] Referring to Figure 14 The avoiding portion 121 has a bottom wall 1211, an upper side wall 1212 abutting the first edge of the bottom wall 1211, and a lower side wall 1213 abutting the second edge of the bottom wall 1211.

[0144] Referring back to Figure 12 The corresponding guide rail 2000 has a middle U-shaped portion 2100 and a first flange 2200 and a second flange (not shown) abutting the two sides of the middle U-shaped portion 2100, both the first flange 2200 and the second flange extend away from the middle U-shaped portion 2100.

[0145] Referring to Figure 10 and Figure 12 In some embodiments of the present application, when the connecting portion 200 is installed on the back of the shell 100, the end of the connecting portion 200 close to the avoiding portion 121 forms a clamping portion 210, and the end away from the avoiding portion 121 forms a through portion 220.

[0146] In some embodiments of the present application, the connecting portion 200 can be switched between a first position and a second position, denoted as the sliding direction of the connecting portion 200 is a first direction (the dotted arrow shown in Figure 11 ) when switching from the first position to the second position, and the sliding direction of the connecting portion 200 is a second direction (the dashed arrow shown in Figure 11 ) when switching from the second position to the first position.

[0147] Referring to Figure 12 When the connecting portion 200 is in the first position, the clamping portion 210 extends into the avoiding portion 121, and the clamping portion 210 of the connecting portion 200 clamps the first flange 2200 of the guide rail 2000.

[0148] Similarly, for the lower side connecting portion, the corresponding clamping portion clamps the second flange of the guide rail 2000, at this time, the through portion 220 is at least partially shielded by the shell 100, that is, the through portion 220 is not completely exposed, referring to Figure 3 and Figure 11 .

[0149] In some embodiments of the present application, when the clamping portion 210 extends into the avoiding portion 121, a first gap (not labeled) is formed between the clamping portion 210 of the connecting portion 200, the bottom wall 1211 of the avoiding portion 121, and the upper side wall 1212 thereof, for clamping the first flange 2200 of the guide rail 2000.

[0150] Similarly, the second gap is formed between the engaging portion of the lower connecting portion, the bottom wall 1211 of the avoiding portion 121 and the lower side wall 1213 thereof, for engaging the second flange of the guide rail 2000, to realize the installation of the controller 1000 on the guide rail 2000 (the installation is shown in Figure 10 ).

[0151] When the controller 1000 is installed on the guide rail 2000, the through portion 220 of the connecting portion 200 / 200A / 200B is not completely exposed, that is, referring to Figure 3 , the connecting portion 200 / 200A / 200B cannot be completely seen from the front face 111 of the housing 100, to ensure the appearance of the controller 1000.

[0152] When the connecting portion 200 / 200A / 200B is switched from the first position to the second position, the engaging portion 210 is away from the avoiding portion 121 along the first direction, the engaging portion 210 of the upper connecting portion 200 / 200A releases the first flange 2200 of the guide rail 2000 and the engaging portion of the lower connecting portion 200B releases the second flange of the guide rail 2000, so that the guide rail 2000 can be taken out of the avoiding portion 121, and at this time, the through portion 220 exceeds the housing 100 to expose the through portion 220, that is, the through portion 220 can be completely seen from the front face 111 of the housing 100 (see Figure 17 and Figure 19 ).

[0153] In some embodiments of the present application, when the guide rail 2000 is taken out of the avoiding portion 121, the controller 1000 can be fixedly installed on the wall surface.

[0154] As described above, after the guide rail 2000 can be taken out of the avoiding portion 121 when all the connecting portions 200 / 200A / 200B are in the second position, at least one of the upper connecting portions 200 / 200A can be kept in the second position and at least one of the lower connecting portions 200B can be kept in the second position, so that a plurality of third fasteners are respectively passed through the through portion 220 of the at least one upper connecting portion and the through portion 220 of the at least one lower connecting portion and are fixed to the wall surface, and the remaining connecting portions which are not used can be switched from the second position to the first position to ensure the appearance of the controller 1000, or in order to simplify the operation, the remaining connecting portions which are not used can also be kept in the second position.

[0155] The third fastener can be a screw or a non-threaded nail body.

[0156] In some embodiments of the present application, when the controller 1000 is fixedly installed, one upper connecting portion can be selected to be used and one lower connecting portion opposite to the upper connecting portion can be used, to ensure the stable installation of the controller 1000 by using a small number of fasteners.

[0157] In some embodiments of the present application, when the controller 1000 is fixedly installed, one upper connecting portion and two lower connecting portions can be selected to be used, which form a triangular shape, thereby ensuring the triangular stable installation of the controller 1000.

[0158] In some embodiments of the present application, referring to Figure 11 The back of the shell 100 is further provided with wall hanging holes 123 / 123A, which are arranged on the same side of the avoiding portion 121 (for example, on the first side of the avoiding portion 121) and are used for being hung on the first fastener.

[0159] In some embodiments of the present application, when the guide rail 2000 is removed from the avoiding portion 121, the controller 1000 can be hung on the wall surface through the wall hanging holes 123 / 123A or the through portion 220 of the connecting portion 200 / 200A / 200B.

[0160] In some embodiments of the present application, the wall hanging holes 123 / 123A can be closed holes or holes open on the lower side.

[0161] In some embodiments of the present application, in order to facilitate hanging, the wall hanging holes 123 / 123A are arranged as holes open on the lower side, referring to Figure 11 The wall hanging holes 123 / 123A extend upward from the upper side wall 1212 of the avoiding portion 121 and are in communication with the avoiding portion 121. When the controller 1000 is hung, the first fastener is more easily inserted into the wall hanging holes 123 / 123A through the lower part in communication with the avoiding portion 121.

[0162] In some embodiments of the present application, the number of wall hanging holes 123 / 123A is two, and the two wall hanging holes 123 / 123A are arranged in a spaced manner along the left-right extension direction of the avoiding portion 121.

[0163] In some embodiments of the present application, after the guide rail 2000 is removed from the avoiding portion 121 when all the connecting portions 200 / 200A / 200B are in the second position, all the connecting portions 200 / 200A / 200B can be switched to the first position, so that the first fastener fixed to the wall surface is hung through the wall hanging holes 123 / 123A.

[0164] In the above embodiments, the controller 1000 is hung on the first fastener through the cooperation of the two wall hanging holes 123 / 123A and the first fastener, which can avoid the left-right shaking of the controller 1000, thereby stably hanging the controller 1000 on the wall surface.

[0165] In some embodiments of the present application, after the rail 2000 is removed from the avoiding portion 121, at least one connecting portion (for example, the connecting portion 200A) is in the second position and the remaining connecting portions are switched to the first position, so that the controller 1000 is fixed to the wall surface by hanging on the first fastener fixed to the wall surface through the hanging holes 123 / 123A, and at the same time, at least one second fastener is respectively passed through the through hole of the selected at least one connecting portion 200A, and the controller 1000 is fixed to the wall surface by combining hanging and fixing.

[0166] The selected one connecting portion 200A and the two hanging holes 123 / 123A form a triangle shape to realize stable fixing of the controller 1000.

[0167] The selected two connecting portions can be two lower connecting portions (not shown) located in the lower connecting portions, so as to avoid left and right shaking of the controller 1000.

[0168] In some embodiments of the present application, the number of hanging holes 123 / 123A and connecting portions 200 / 200A / 200B can be flexibly set to adapt to different installation environments, for example, the hanging holes 123 / 123A are provided with one, and the connecting portions 200 / 200A / 200B are provided with two (one upper connecting portion 200 / 200A and one lower connecting portion 200B).

[0169] In some embodiments of the present application, in order to realize the switching of the connecting portion 200 / 200A / 200B between the first position and the second position, referring to Figure 14 The controller 1000 further comprises a plurality of guide portions 122 / 122A / 122B, the number of which is consistent with the number of the plurality of connecting portions 200 / 200A / 200B, that is, one connecting portion 200 / 200A / 200B is guided and slid in one guide portion 122 / 122A / 122B to realize switching from the first position to the second position along the first direction and switching from the second position to the first position along the second direction.

[0170] Referring to Figure 14 The plurality of guide portions 122 / 122A / 122B are also arranged on the back of the housing 100, specifically on the back of the lower housing 120, and the extension direction of the guide portions 122 / 122A / 122B is perpendicular to the extension direction of the avoiding portion 121, that is, the extension direction of the guide portions 122 / 122A / 122B is upward and downward.

[0171] The guide portion 122 / 122A / 122B penetrates up and down and communicates with the avoiding portion 121, so that the connecting portion 200 / 200A / 200B facilitates the approach of the avoiding portion 121 or the retraction of the avoiding portion 121 by the open lower portion of the guide portion 122 / 122A / 122B when the connecting portion 200 / 200A / 200B slides in the guide portion 122 / 122A / 122B.

[0172] In some embodiments of the present application, the structure of the guide portion 122 / 122A / 122B is also the same, which is described below taking the structure of the guide portion 122 as an example.

[0173] In some embodiments of the present application, referring to Figure 15 , the sidewall of the guide portion 122 is formed with a first clamping portion 1223 / 1223A and a second clamping portion 1224 / 1224A, both of which penetrate the sidewall where they are located, that is, both the first clamping portion 1223 / 1223A and the second clamping portion 1224 / 1224A are clamping grooves.

[0174] In some embodiments of the present application, corresponding to the first clamping portion 1223 / 1223A and the second clamping portion 1224 / 1224A, referring to Figure 16 , the connecting portion 200 is provided with a clamping protrusion 241, which switches the clamping of the first clamping portion 1223 / 1223A and the second clamping portion 1224 / 1224A to switch the connecting portion 200 between the first position and the second position.

[0175] In some embodiments of the present application, referring to Figure 14 and Figure 15 , the first clamping portion 1223 / 1223A is closer to the avoiding portion 121 than the second clamping portion 1224 / 1224A, so that when the connecting portion 200 is in the first position, the clamping protrusion 241 is clamped and matched with the first clamping portion 1223 / 1223A.

[0176] When the connecting portion 200 switches to the second position along the first direction, the clamping protrusion 241 is disengaged from the first clamping portion 1223 / 1223A and clamped and matched with the second clamping portion 1224 / 1224A, and when the connecting portion 200 switches back to the first position along the second direction, the clamping protrusion 241 is disengaged from the second clamping portion 1224 / 1224A and clamped and matched with the first clamping portion 1223 / 1223A.

[0177] In some embodiments of the present application, in order to ensure the stability of the connecting portion 200 sliding in the guide portion 122, the number of the first clamping portion 1223 / 1223A, the number of the second clamping portion 1224 / 1224A and the number of the clamping protrusion 241 are all two, referring toFigure 15 and Figure 16 .

[0178] Two first clamping portions 1223 / 1223A are oppositely arranged along the extension direction of the avoiding portion 121, see Figure 15 .

[0179] In some embodiments of the present application, the back of the guide portion 122 is formed with an up-down through opening, which penetrates the inside of the guide portion, so that the back of the guide portion 122 forms left and right first back side walls 1221 and second back side walls 1221A.

[0180] Two first clamping portions 1223 / 1223A are oppositely arranged on the first back side wall 1221 and the second back side wall 1221A, and two second clamping portions 1224 / 1224A are oppositely arranged on the first back side wall 1221 and the second back side wall 1221A, and the two first clamping portions 1223 / 1223A are closer to the avoiding portion 121 than the two second clamping portions 1224 / 1224A.

[0181] Correspondingly, see Figure 16 , the connecting portion 200 is also provided with two oppositely arranged clamping protrusions 241 corresponding to the two first clamping portions 1223 / 1223A (or the two second clamping portions 1224 / 1224A), which are referred to as: first clamping protrusions (not marked) and second clamping protrusions (not marked).

[0182] The first clamping protrusions are switched to be clamped and matched with the left first clamping portion 1223 and the left second clamping portion 1224, and the second clamping protrusions are switched to be clamped and matched with the right first clamping portion 1223A and the right second clamping portion 1224A.

[0183] The oppositely arranged two first clamping portions 1223 / 1223A, two second clamping portions 1224 / 1224A and two clamping protrusions 241 facilitate uniform stress when the connecting portion 200 switches position, and when switching, the two clamping protrusions 241 and the two clamping portions need to be clamped and matched respectively to complete the switching, to ensure the switching reliability and improve the stability of the controller 1000 installation.

[0184] In some embodiments of the present application, in order to facilitate the position switching of the connecting portion 200, the structure of the clamping protrusion 241, the first clamping portion 1223 / 1223A and the second clamping portion 1224 / 1224A are designed.

[0185] See Figure 16 and Figure 18 , the clamping protrusion 241 is provided in a cylindrical shape, and a rounded corner 2411 is formed on the side close to the avoiding portion 121.

[0186] See Figure 13 andFigure 18 The first clamping portion 1223A is formed with a first chamfer 1225 on the side wall (i.e. the upper side wall) near the second clamping portion 1224A, which cooperates with the rounded corner 2411, and the first chamfer 1225 is inclined from the upper side wall towards the second clamping portion 1224A.

[0187] The second clamping portion 1224A is formed with a second chamfer 1226 on the side wall (i.e. the lower side wall) near the first clamping portion 1223A, which cooperates with the rounded corner 2411, and the second chamfer 1226 is inclined from the lower side wall towards the first clamping portion 1223A.

[0188] In some embodiments of the present application, referring to Figure 13 When the connecting portion 200 is in the first position, i.e. the clamping protrusion 241 is clamped and cooperated with the first clamping portion 1223A, if the connecting portion 200 is switched from the first position to the second position (i.e. from Figure 13 to Figure 18 ), the connecting portion 200 needs to slide in the first direction, at this time, the clamping protrusion 241 is deformed conveniently by the first chamfer 1225, so as to slide and switch to cooperation with the second clamping portion 1224A.

[0189] If the connecting portion 200 is switched from the second position to the first position (i.e. from Figure 18 to Figure 13 ), the connecting portion 200 needs to slide in the second direction, at this time, the rounded corner 2411 and the second chamfer 1226 of the clamping protrusion 241 are used together to make the clamping protrusion 241 produce a gradually increasing pressure and be easily deformed, so as to slide and switch to the first position.

[0190] In some embodiments of the present application, the clamping protrusion 241 is formed in a cantilever form to be easily deformed.

[0191] Referring to Figure 16 The connecting portion 200 has a first cantilever 240 and a first through hole 242 corresponding to the first cantilever 240 to provide a deformation space for the first cantilever 240, the length extension direction of the first cantilever 240 is along the sliding direction of the connecting portion 200, the end of the first cantilever 240 connected with the connecting portion 200 is a fixed portion, the free end is a free end, and the clamping protrusion 241 is arranged on the free end of the first cantilever 240.

[0192] Correspondingly, the first clamping protrusion and the second clamping protrusion are arranged correspondingly, and two first cantilevers 240 are arranged correspondingly.

[0193] In some embodiments of the present application, in order to better guide the sliding of the connecting portion 200 in the guide portion 122 and not to be easily separated from the guide portion 122, a limiting structure is arranged.

[0194] The limiting structure includes a first limiting part and a second limiting part that cooperates with the first limiting part.

[0195] In some embodiments of this application, one of the sidewalls of the guide portion 122 and the sidewall of the connecting portion 200 is provided with a first limiting portion and the other is provided with a second limiting portion. When the connecting portion 200 slides within the guide portion 122, the first limiting portion and the second limiting portion slide in cooperation.

[0196] In some embodiments of this application, in order to balance the sliding of the connecting part 200, two first limiting parts and two second limiting parts are also provided.

[0197] In some embodiments of this application, the first limiting portion is a travel groove formed on the side wall of the guide portion 122, see [link to relevant documentation]. Figure 15 A travel groove 1222 is formed on the first back sidewall 1221 of the guide portion 122, and a travel groove 1222A is formed on the second back sidewall 1221A of the guide portion 122. Figure 18 As shown in the diagram, the extension direction of the travel groove 1222 / 1222A is consistent with the sliding direction of the connecting part 200.

[0198] In some embodiments of this application, the second limiting part is a limiting slider 231 formed on the second cantilever 230.

[0199] Among them, see Figure 16 The connecting part 200 has a second cantilever 230 and a second through hole 232 that provides deformation space for the second cantilever 230. The length extension direction of the first cantilever 240 is along the sliding direction of the connecting part 200. The end of the second cantilever 230 that is connected to the connecting part 200 is a fixed part, and the suspended end is a free end. The limiting slider 231 is provided on the free end of the second cantilever 230.

[0200] Two stroke slots 1222 / 1222A are set accordingly, and two limit sliders 231 are also set accordingly.

[0201] The cantilevered design of the limiting slider 231 not only serves as a guide, but also allows the bottom wall of the stroke groove 1222A to deform the limiting slider 231 when it contacts the bottom wall. This causes the limiting slider 231 to reapply its restoring force to the bottom wall of the stroke groove 1222A, ensuring that the two can reliably slide together.

[0202] When the connecting part 200 slides along the first direction, and the limiting slider 231 slides along the stroke groove 1222A in the first direction and the connecting part 200 slides into place to switch to the second position, the upper edge of the limiting slider 231 is in close contact with the upper side wall of the stroke groove 1222A (see...). Figure 18The limiting block 231 is in close contact with the lower side wall of the stroke groove 1222A, thereby limiting the connection part 200 from being pulled out of the guide part 122.

[0203] When the connection part 200 slides along the second direction, the limiting block 231 slides along the stroke groove 1222A in the second direction, and the connection part 200 slides to the position, i.e., switches to the first position, the lower edge of the limiting block 231 is in close contact with the lower side wall of the stroke groove 1222A (see Figure 13 ), thereby limiting the connection part 200 from continuously sliding downward.

[0204] In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0205] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A controller characterized by comprising: The application relates to a controller, which comprises: a shell, an accommodating space is formed in the shell, a main control board of the controller is located in the accommodating space, and a front surface of the shell is formed with: a maintenance opening which is communicated with the accommodating space; an accommodating part in which a first hooking part is formed; a clamping part which is communicated with the accommodating space and comprises an insertion part and a limiting part which are communicated with each other; a maintenance cover which is detachably installed to the front surface of the shell to expose or shield the maintenance opening, the maintenance cover is provided with a second hooking part at a front end in an installation direction of the maintenance cover, the second hooking part is inserted into the accommodating part and hooks the first hooking part when the maintenance cover is installed in place, and the maintenance cover further comprises: a hanging part which is inserted through the insertion part and clamped on an inner side wall of the limiting part when the maintenance cover is installed in place, so as to prevent the maintenance cover from being separated from the front surface; wherein an opening width of the insertion part along a direction perpendicular to the installation direction is greater than an opening width of the limiting part along the direction perpendicular to the installation direction.

2. The controller of claim 1, wherein, The first hooking part is arranged on an inner side wall of the accommodating part which faces the front surface of the shell, and the first hooking part has: a first side surface which is inclined towards the installation direction of the maintenance cover; a second side surface which is opposite to the first side surface, the second side surface is inclined to extend so that a free end of the second side surface is close to a free end of the first side surface; the second hooking part has an inner side surface which matches the second side surface; when the maintenance cover is installed in place, the second hooking part hooks the second side surface and the second side surface is tightly attached to the inner side surface.

3. The controller of claim 1, wherein, The maintenance cover comprises a front surface plate and a side surface plate which is butted against the front surface plate; a free end of the front surface plate is provided with the second hooking part, and an inner side wall at a free end of the side surface plate is provided with an embedding part which is embedded into a receiving part of the shell when the maintenance cover is installed in place.

4. The controller of claim 3, wherein, A plurality of first heat dissipation holes are arranged on the shell and communicated with the accommodating space; a plurality of second heat dissipation holes are arranged on the side surface plate, and the plurality of second heat dissipation holes correspond to the plurality of first heat dissipation holes one by one when the maintenance cover is installed in place.

5. The controller of claim 1, wherein, The number of the accommodating parts, the number of the clamping parts and the number of the hanging parts are all two, and the accommodating parts, the clamping parts and the hanging parts are oppositely arranged along a direction perpendicular to the detachable direction of the maintenance cover.

6. The controller of claim 1, wherein, The maintenance cover further comprises: a guide rib plate which is formed on a back surface of the maintenance cover and extends away from the back surface of the maintenance cover, and the hanging part is formed on the guide rib plate; the clamping part further comprises an extension part which is communicated with the insertion part and the limiting part respectively, and the limiting part is located between the extension part and the insertion part; during sliding installation of the maintenance cover, the guide rib plate guides the clamping part to slide.

7. The controller of claim 1, wherein, A shell back surface is provided with an avoiding part of an avoiding guide rail, and the controller comprises: a plurality of connecting parts which are installed on the back surface of the shell and are located on both sides of the avoiding part along an extension direction of the avoiding part, the connecting parts are provided with through parts and can be switched between a first position and a second position. When the controller is mounted on the rail, the plurality of connecting portions are in the first position and the end portions of the plurality of connecting portions extending into the avoiding portion to clamp the first and second flanges of the rail; When the plurality of connecting portions are in the second position, the end portions of the plurality of connecting portions extending out of the avoiding portion to release the rail.

8. The controller according to claim 7, wherein: the connecting portion is provided with a through portion; when the connecting portion is in the first position, the through portion of the connecting portion is at least partially shielded by the shell; when the connecting portion is in the second position, the through portion of the connecting portion extends out of the shell to expose the through portion, and the controller can be fixed via a fastener passing through the through portion.

9. The controller according to claim 8, wherein: the back of the shell is provided with a wall-hanging hole; when the controller is wall-mounted on a wall, the shell is fixed on the wall via a first fastener hung through the wall-hanging hole, or the shell is fixed on the wall via a first fastener hung through the wall-hanging hole while at least one connecting portion is in the second position and is fixed on the wall via a second fastener passing through the through portion; when the controller is fixedly mounted on a wall, at least one connecting portion on one side of the avoiding portion and at least one connecting portion on the other side of the avoiding portion are both in the second position and are fixed on the wall via a third fastener passing through the corresponding through portion.

10. The controller of claim 7, wherein, The controller further comprises: a plurality of guiding portions corresponding to the plurality of connecting portions and provided on the back of the shell, the guiding portions extending in a direction perpendicular to the extending direction of the avoiding portion, one end of the guiding portion away from the avoiding portion being in communication with the outside and the other end of the guiding portion close to the avoiding portion being in communication with the avoiding portion; when the connecting portion slides in the guiding portion along a first direction, the connecting portion switches from the first position to the second position, and when the connecting portion slides in the guiding portion along a second direction, the connecting portion switches from the second position to the first position.

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