Junction box assembly, temperature controller and air conditioner

Abstract

The utility model relates to a junction box assembly, a temperature controller and an air conditioner, and relates to the technical field of air conditioner temperature control equipment. The junction box assembly of the utility model comprises an electric appliance box; the wiring terminal is detachably connected with the electric appliance box in an inserted mode, can move in the bottom box to be electrically connected with a lead to be connected in the bottom box when the wiring terminal is detached from the electric appliance box, and is electrically communicated with the electric appliance box when the wiring terminal is connected with the electric appliance box in an inserted mode. The electric connection between the lead to be connected and the wiring terminal can be completed by overturning the wiring terminal in the bottom box, the connection between the wiring terminal and the electric appliance box is realized in a plugging manner, the lead in the bottom box does not need to be pulled far, and the requirement on the reserved length of the lead in the bottom box is smaller than the requirement on the reserved length of the lead by the electric appliance box in the conventional technology; and the application range is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioner temperature control equipment, and particularly relates to a junction box assembly, a thermostat and an air conditioner. Background Art

[0002] A temperature controller is a device for controlling the temperature of an air-conditioned room. It is generally at a relatively long distance from the device to be controlled, and long wires are required to connect the temperature controller to the device to be controlled. For aesthetic considerations during wiring, the wires and the bottom box containing the junction box assembly are buried in the wall. The electrical connection between the relevant wires and the control main board of the thermostat is completed in the bottom box.

[0003] In the related art, in order to better protect the control main board, the control main board is installed inside an electrical box. During wiring, various lead wires in the wall are connected to the terminal posts on the electrical box to achieve the electrical connection between the wires in the wall and the control main board.

[0004] However, due to the relatively large volume of the electrical box because it contains the control main board, the space in the bottom box is small when the electrical box extends into the bottom box, making it difficult for wiring tools to reach into the bottom box to complete the wiring work. Therefore, when wiring, the wiring personnel need to pull out the electrical box by a relatively long distance to facilitate the wiring tool (such as a screwdriver or a welding torch) to complete the wiring work for each terminal post outside the bottom box. That is to say, the current junction box assembly has relatively high requirements for the reserved length of the lead wire extending out of the bottom box and cannot meet the installation work of the thermostat in an environment with short lead wires. Summary of the Utility Model

[0005] The utility model provides a junction box assembly, a thermostat and an air conditioner, which are used to meet the lead wire arrangement when the reserved length of the lead wire is short.

[0006] In a first aspect, the utility model provides a junction box assembly, including: an electrical box for being installed in a bottom box; and a terminal, which is detachable from the electrical box and is configured to be movable in the bottom box and electrically connectable to the lead wire to be connected in the bottom box when detached from the electrical appliance, and is electrically connected to the electrical box when inserted into the electrical box.

[0007] In an embodiment, an installation slot is provided on the electrical box, and a first conductive member is provided at the installation slot; the terminal includes a plug-in connecting member and a second conductive member, the second conductive member is installed in the plug-in connecting member, the plug-in connecting member is detachably inserted into the installation slot, and the second conductive member is electrically connected to the first conductive member when the plug-in connecting member is inserted into the installation slot.

[0008] In one embodiment, the terminal block further includes a first limiting post; the electrical box is further provided with a first limiting groove, and the first limiting groove communicates with the installation slot; when the plugging connector is inserted into the installation slot, the first limiting post is inserted into the first limiting groove.

[0009] In one embodiment, the electrical box is further provided with a second limiting groove communicating with the installation slot, and the first limiting groove and the second limiting groove are arranged at intervals; the terminal block is provided with a second limiting post, and when the terminal block is plugged with the electrical box, the second limiting post is inserted into the second limiting groove.

[0010] In one embodiment, the first limiting groove communicates with the first side wall of the installation slot, and the second limiting groove communicates with the second side wall of the installation slot, wherein the first side wall and the second side wall are arranged at an angle.

[0011] In one embodiment, the plugging connector includes a plugging part and a limiting part that are perpendicular to each other; the installation slot is a stepped groove with a first limiting surface, and the terminal block is configured such that when the plugging part is inserted into the installation slot, the side surface of the limiting part abuts against the first limiting surface.

[0012] In one embodiment, a plurality of first wiring holes parallel to the first limiting surface are formed in the limiting part, and each first wiring hole is used for a lead to be connected to be inserted to be electrically connected to the terminal block. A plurality of wire relief grooves are further formed on the outer surface of the electrical box, and the wire relief grooves correspond to the first wiring holes one by one.

[0013] In one embodiment, it further includes a panel, and the panel is detachably connected to the electrical box. A first chamber is formed on one side of the electrical box facing the panel, and the electrical box includes a first conductive member extending into the first chamber. The first chamber is used to accommodate the control main board, and the first conductive member is used to be electrically connected to the control main board.

[0014] In one embodiment, the bottom box is provided with mounting posts; the junction box assembly further includes a first fastener and a seal; the electrical box is provided with a first mounting hole, and the diameter of the first mounting hole is smaller than the inner diameter of the seal. The seal is installed outside the electrical box and is coaxially arranged with the first mounting hole. The first fastener is used to pass through the first mounting hole and connect with the mounting post so that the electrical box is installed on the bottom box. The seal is configured such that when the first fastener is connected to the mounting post, one side of the seal abuts against the mounting post, and the other side of the seal abuts against the electrical box.

[0015] In a second aspect, the present invention further provides a thermostat, which includes: the above-mentioned junction box assembly, and a control main board; the control main board is installed in the electrical box of the junction box assembly.

[0016] In a second aspect, the present invention further provides an air conditioner, which includes the above-mentioned thermostat.

[0017] Compared with the prior art, the advantages of the present utility model are as follows. When the length of the lead wire reserved in the bottom box is short, the terminal can be separated from the electrical box, and the arrangement direction of the terminal can be adjusted in the bottom box so that the wiring personnel can extend the wiring tool into the bottom box to electrically connect the lead wire to be connected with the terminal. After each lead wire to be connected is connected to the terminal, the terminal can be inserted into the electrical box to electrically connect the terminal with the electrical box, thereby realizing the electrical connection between the lead wire to be connected and the electrical box. Since no special tool is required for insertion, as long as there is a space for fingers to reach, the electrical connection between the terminal and the electrical box can be realized, without the need to pull the lead wire too far, and the requirement for the reserved length of the lead wire in the bottom box is less than that of the electrical box in the conventional technology, so the applicable range is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Hereinafter, the present utility model will be described in more detail based on embodiments with reference to the drawings.

[0019] Figure 1 is a schematic perspective view of a wiring box assembly in the related art;

[0020] Figure 2 is an exploded structural schematic diagram of a wiring box assembly in an embodiment of the present utility model;

[0021] Figure 3 is an assembly schematic diagram of an electrical box and a terminal in an embodiment of the present utility model;

[0022] Figure 4 is an assembly schematic diagram of an electrical box and a control main board in an embodiment of the present utility model;

[0023] Figure 5 is a schematic perspective view of a terminal in an embodiment of the present utility model;

[0024] Figure 6 is Figure 3 a schematic perspective view of the components in another perspective;

[0025] Figure 7 is Figure 6 a schematic perspective view with the terminal hidden;

[0026] Figure 8 is a schematic perspective view when the control main board is separated from the electrical box in an embodiment of the present utility model;

[0027] Figure 9 is a schematic perspective view when the control main board is connected to the electrical box in an embodiment of the present utility model;

[0028] Figure 10 is a schematic perspective view of a terminal in an embodiment of the present utility model;

[0029] Figure 11 It is a schematic three - dimensional structure diagram of a terminal in an embodiment of the present utility model;

[0030] Figure 12 It is a schematic diagram of the end of the explosion in a sectional view of an embodiment of the present utility model;

[0031] Figure 13 It is a schematic three - dimensional structure diagram when the electrical box and the panel are connected in an embodiment of the present utility model;

[0032] Figure 14 It is a schematic three - dimensional structure diagram when the seal and the electrical box are separated in an embodiment of the present utility model.

[0033] Reference numerals:

[0034] 100, junction box assembly;

[0035] 110, electrical box; 111, installation slot; 112, first conductive part; 113, first limiting groove; 114, second limiting groove; 115, first limiting surface; 116, first installation hole; 117, second installation hole; 1181, first clamping groove; 1182, first clamping protrusion; 119, wire relief groove;

[0036] 120, terminal; 121, plug - in connecting part; 1211, first limiting post; 1212, second limiting post; 1213, plug - in part; 12131, first wiring hole; 1214, limiting part; 12141, second wiring hole; 122, compression screw; 123, second conductive part;

[0037] 130, panel; 131, second clamping groove; 132, second clamping protrusion;

[0038] 140, bottom box;

[0039] 150, first fastener;

[0040] 160, seal; 161, positioning post;

[0041] 200, control main board; 210, plug - in hole. Detailed implementation manners

[0042] The present utility model will be further described below in conjunction with the accompanying drawings.

[0043] As Figure 1 shown, it is an electrical box of a junction box assembly in the related art. Among them, the lead wires to be connected (such as live wire, neutral wire and water valve wire, etc.) are directly connected to the terminal posts of the junction box. In order to firmly connect the lead wires to the terminal posts of the electrical box, it is necessary to use a screwdriver to screw the compression screw at the terminal post to lock the external lead wires.

[0044] Among them, in order to avoid exposing the terminal posts, the terminal posts are arranged on the side of the electrical box facing the bottom box. However, due to the large volume of the electrical box, it is impossible to complete a turn inside the bottom box to make the terminal posts of the electrical box face outward. This requires pulling out the lead to be connected a relatively long distance outside the bottom box, so that the electrical box can be rotated outside the bottom box to make the terminal posts face the wiring personnel, facilitating the wiring tool to adjust the terminal posts to complete the wiring work. That is to say, due to the current wiring box assembly having relatively high requirements for the reserved length of the lead and a small adaptation range.

[0045] Reference Figure 2 and Figure 3 As shown in the figure, a wiring box assembly 100 provided by an embodiment of the present application includes an electrical box 110 and a terminal block 120. The electrical box 110 is detachably installed on the bottom box 140, and the terminal block 120 is detachably installed on the electrical box 110.

[0046] The inner side of the electrical box 110 is used to install the control main board 200. A mounting slot 111 is recessed on the outer surface of the electrical box 110, and a plurality of first conductive members 112 are arranged at the mounting slot 111. One end of the first conductive member 112 extends into the electrical box 110 and is electrically connected to the control main board 200.

[0047] The terminal block 120 can be detachably inserted into the mounting slot 111. When the terminal block 120 is inserted into the mounting slot 111, the terminal block 120 is electrically connected to the plurality of first conductive members 112, and the terminal block 120 is also used to electrically connect a plurality of leads to be connected, thereby realizing the electrical connection between the leads to be connected and the corresponding first conductive members 112.

[0048] When using the wiring box assembly 100 provided by the present application, when the reserved length of the lead to be connected is short, the terminal block 120 can be pulled out of the mounting slot 111, and the terminal block 120 can be flipped inside the bottom box 140 to adjust the orientation of the second conductive member 123 in the terminal block 120, facilitating the wiring personnel to electrically connect the lead to be connected inside the bottom box 140 to the second conductive member 123. Since it is not necessary to move the terminal block 120 out of the bottom box 140, the requirement for the reserved length of the lead to be connected in this step is less than the requirement for the reserved length of the lead to be connected by the conventional wiring box assembly 100.

[0049] After securely connecting the lead to be connected to the corresponding second conductive member, the electrical box 110 can be inserted into the bottom box 140 and plugged into the terminal 120. During the plugging process, the second conductive member can be electrically connected to the corresponding first conductive member simply by manual operation, enabling the lead to be connected to be in electrical communication with the pin circuit of the control main board 200. Throughout the wiring process, it is not necessary to pull out the lead to be connected in the bottom box 140 over a long distance, which can adapt to the wiring work of leads with a short reserved length.

[0050] In some implementation manners, an installation slot 111 is provided on the electrical box 110. The installation slot 111 can be formed, for example, by making the outer surface of the electrical box 110 concave, or by directly opening a slot. And the first conductive member 112 is disposed at the installation slot 111, and the plugging connector 121 is detachably inserted into the installation slot 111. By installing the terminal 120 at the concave portion of the electrical box 110, the overall volume of the two is smaller when the plugging connector 121 is plugged into the electrical box 110. In other implementation manners, a protrusion can also be provided on the outer surface of the electrical box 110, and a corresponding concave portion can be provided at the plugging connector 121. The plugging connector 121 is plugged into the electrical box 110 by inserting the protrusion on the outside of the electrical box 110 into the concave portion of the plugging connector 121.

[0051] It can be understood that the depth of the installation slot 111 can be set deeper so that when the terminal 120 is inserted into the installation slot 111, the terminal 120 is completely received in the installation slot 111, avoiding scratching due to the terminal 120 protruding from the outer surface of the electrical box 110. In addition, the depth of the installation slot 111 can also be set shallower so that when the terminal 120 is inserted into the installation slot 111, the terminal 120 can partially protrude from the installation slot 111, so that the lead to be connected connected to the terminal 120 can maintain a gap with the outer surface of the electrical box 110, reducing the friction between the lead to be connected and the outer surface of the electrical box 110.

[0052] As Figure 3 and Figure 4 shown, in some implementation manners, three adjacent outer sides (the back side, the top side, and the left side) of the electrical box 110 are simultaneously recessed inward to form the installation slot 111. In other implementation manners, the installation slot 111 can also be formed by only a single side (such as one of the back side, the top side, and the left side) or two adjacent sides (such as any two adjacent sides among the back side, the top side, and the left side) being recessed inward. That is to say, there is no special limitation on the opening position of the installation slot 111, and the area of the installation slot 111 can be adjusted according to the structure of the electrical box 110.

[0053] See Figure 3 、 Figure 4 and Figure 5As shown, in some implementations, a first limiting groove 113 is further formed on the outer surface of the electrical appliance box 110. The extending direction of the first limiting groove 113 is the same as that of the first conductive member 112. The wiring terminal 120 is provided with a first limiting post 1211. The wiring terminal 120 is configured such that when it is inserted into the installation slot 111, the first limiting post 1211 is inserted into the first limiting groove 113. Through the cooperation of the first limiting groove 113 and the first limiting post 1211, the wiring terminal 120 can be positioned to prevent the second conductive member 123 in the wiring terminal 120 from failing to be electrically connected to the corresponding first conductive member 112 when the wiring terminal 120 is installed.

[0054] Since the extending direction of the first limiting groove 113 is the same as that of the first conductive member 112, when the first limiting post 1211 is inserted into the first limiting groove 113 along the extending direction of the first limiting groove 113, the wiring terminal 120 can be gradually covered on each first conductive member 112, completing the electrical connection between the first conductive member 112 and the second conductive member 123. That is to say, through the first limiting groove 113, not only can the wiring terminal 120 be prevented from shaking after the installation is completed, but also the installation direction of the wiring terminal 120 can be restricted during the installation process, avoiding damage to the first conductive member 112 or the second conductive member 123 during the installation process.

[0055] As Figure 6 and Figure 7 shown, the first limiting groove 113 is communicated with the installation slot 111. When manufacturing the mold of the junction box, the first limiting groove 113 and the installation slot 111 can be regarded as the same groove-shaped structure, making the positioning of the first limiting groove 113 simpler. Compared with the spaced groove-shaped structure, the cost of the mold is lower. In other implementations, the first limiting groove 113 can also be arranged at intervals. When the plug-in connecting member 121 is connected to the electrical appliance box 110, the plug-in connecting member 121 straddles the installation slot 111 and the first limiting groove 113, reducing the risk of the plug-in connecting member 121 deviating from the installation position.

[0056] See Figure 3 and Figure 4 shown, in some implementations, a second limiting groove 114 communicated with the installation slot 111 is further formed on the outer surface of the electrical appliance box 110. The wiring terminal 120 is provided with a second limiting post 1212 corresponding to the second limiting groove 114. The first limiting groove 113 and the second limiting groove 114 are spaced apart. Through the two spaced groove-shaped structures on the electrical appliance box 110 and the two limiting posts of the wiring terminal 120, the misalignment of the wiring terminal 120 during installation is avoided, improving the accuracy of positioning the wiring terminal 120.

[0057] See Figure 4 、 Figure 5 and Figure 7As shown, in some implementations, the first limiting groove 113 communicates with the first side wall of the installation slot 111, and the second limiting groove 114 communicates with the second side wall of the installation slot 111. The first side wall and the second side wall form an angle. Since the first limiting groove 113 and the second limiting groove 114 are provided on two side walls with an angle of the installation slot 111, the wiring terminal 120 can be limited in two directions, improving the accuracy of the installation of the wiring terminal 120. In this embodiment, the first side wall and the second side wall are perpendicular to each other. In other implementations, the angle between the first side wall and the second side wall can be set to an acute angle or an obtuse angle.

[0058] As Figure 4 shown, the first limiting groove 113 is provided on the lower side wall of the installation slot 111, and the first limiting groove 113 and the first limiting post 1211 can be used to prevent the plug-in connecting member 121 from being misaligned relative to the electrical box 110 in the left-right direction (the arrangement direction of the first conductive member 112). The second limiting groove 114 is provided on the right side wall of the installation slot 111, and the second limiting groove 114 and the second limiting post 1212 inserted into the second limiting groove 114 can be used to prevent the wiring terminal 120 from being misaligned in the up-down direction ( Figure 4 the extending direction of the wire relief groove 119 in).

[0059] As Figure 5 shown, in some implementations, the cross-section of the first limiting post 1211 is V-shaped, while the cross-section of the first limiting groove 113 is rectangular, and the outer contour cross-sectional area of the first limiting post 1211 is larger than the cross-sectional area of the first limiting groove 113. When the first limiting post 1211 is inserted into the first limiting groove 113, the two long ribs of the first limiting post 1211 will approach each other under the extrusion of the first limiting groove 113. Through the above structure, a tight combination of the first limiting post 1211 and the first limiting groove 113 is achieved. The separation of the wiring terminal 120 and the electrical box 110 is avoided.

[0060] In another implementation, a plurality of convex points can also be provided on the side wall of the first limiting post 1211, so that the first limiting post 1211 is inserted into the first limiting groove 113 with interference, improving the contact force between the first limiting post 1211 and the first limiting groove 113.

[0061] As Figure 5 shown, in some implementations, the second limiting post 1212 can also be set to have a V-shaped cross-section to improve the bonding force between the wiring terminal 120 and the electrical box 110 at the second limiting groove 114. It can be understood that the structure for improving the bonding force (V-shaped cross-section or adding convex points, etc.) can be adopted only at one of the first limiting post 1211 and the second limiting post 1212, or the structure for improving the bonding force can be adopted at both the first limiting post 1211 and the second limiting post 1212.

[0062] In some implementations, the first conductive member 112 is a pin, wherein one end of the first conductive member 112 passes through the electrical box 110 and extends to the outside of the electrical box 110, and the other end of the first conductive member 112 passes through the electrical box 110 and extends to the inside of the electrical box 110. Figure 8 as well as Figure 9 As shown, the control main board 200 is installed inside the electrical box 110, and one end of the first conductive member 112 extending into the electrical box 110 is connected to the plug hole 210 (see FIG. Figure 4 ) electrical connections.

[0063] In some implementations, the first conductive member 112 may be placed in the mold when the electrical box 110 is injection molded, so that the first conductive member 112 is connected to the electrical box in an integrated manner, thereby preventing the first conductive member 112 from shaking relative to the electrical box 110. In another implementation, a through hole for the first conductive member 112 to pass through may be provided at the electrical box 110, and the first conductive member 112 may be welded or bonded into the corresponding hole to achieve connection between the first conductive member 112 and the electrical box 110.

[0064] It is understandable that, in another implementation, the first conductive member 112 may also be configured to have a needle-like structure at one end and a cylindrical structure at the other end, wherein the needle-like structure of the first conductive member 112 is inserted into the plug hole 210 of the control mainboard 200, and the cylindrical structure of the first conductive member 112 is inserted into the second conductive member 123 for electrical connection. Alternatively, the cylindrical structure of the first conductive member 112 is extended into the interior of the electrical box 110 for the needle-like pin of the control mainboard 200 to be inserted, and the needle-like structure of the first conductive member 112 is extended out of the electrical box 110 so that the second conductive member 123 with a cylindrical structure is sleeved outside the first conductive member 112, thereby completing the electrical connection between the first conductive member 112 and the second conductive member 123.

[0065] See also Figure 5 , Figure 10 as well as Figure 11 As shown, in some implementations, the plug connector 121 includes a plug portion 1213 and a limiting portion 1214, the limiting portion 1214 is connected to the plug portion 1213, and extends in a direction perpendicular to the plug portion 1213 to protrude from the side of the plug portion 1213; the installation slot 111 is a stepped groove having a first limiting surface 115, the first limiting surface 115 is parallel to the installation surface of the first conductive member 112, and the wiring terminal 120 is configured such that when the plug portion 1213 is plugged into the installation slot 111, the side of the limiting portion 1214 contacts the first limiting surface 115. By using the limiting portion 1214 to contact the first limiting surface 115, it is avoided that the wiring terminal 120 presses the first conductive member 112 too much downward and damages the first conductive member 112 during the plugging process.

[0066] In some implementations, a first wiring hole 12131 parallel to the first limiting surface 115 is provided at the limiting portion 1214. The first wiring hole 12131 is used for inserting a lead to be connected to be electrically connected to the second conductive member 123. A plurality of wire relief grooves 119 are also formed on the outer surface of the electrical box 110, and the wire relief grooves 119 correspond to the first wiring holes 12131 one by one. By providing the wire relief grooves 119 on the electrical box 110, the wires can be neatly arranged outside the electrical box 110, facilitating subsequent repairs.

[0067] Figure 10 In it, 6 first wiring holes 12131 are provided at the limiting portion 1214 so that 6 leads to be connected can be inserted into the corresponding first wiring holes 12131 to be electrically connected to the second conductive member 123 in the first wiring holes 12131.

[0068] See Figure 10 and Figure 11 As shown, the plug-in connection member 121 is further provided with a second wiring hole 12141 perpendicular to the first wiring hole 12131. When the plug-in connection member 121 is inserted into the mounting slot 111, the first conductive member 112 is inserted into the corresponding second wiring hole 12141. See Figure 5 As shown, a second conductive member 123 is installed in the plug-in connection member 121. One end of the second conductive member 123 extends into the first wiring hole 12131, and the other end extends into the second wiring hole 12141. Although the second conductive member 123 is a solid cylindrical structure in the figure, in practice, the second conductive member 123 can also be set as a needle-like structure, a sheet-like structure or a tubular structure to better electrically connect with the first conductive member 112 or the lead to be connected.

[0069] It can be understood that the structures at both ends of the second conductive member 123 can be the same or different. For example, one end of the second conductive member 123 extending into the first wiring hole 12131 can be set as a sheet-like structure, while the end of the second conductive member 123 extending into the second wiring hole 12141 can be set as a tubular structure. Or it can also be that one end of the second conductive member 123 extending into the first wiring hole 12131 is set as a tubular structure, while the end of the second conductive member 123 extending into the second wiring hole 12141 is set as a sheet-like structure. The present application does not particularly limit the structure of the second conductive member 123, and the second conductive member 123 can be set as a more suitable structure according to the specific wiring method and wiring object.

[0070] Such as Figure 10 and Figure 11As shown, in some implementations, the terminal 120 also includes a clamping screw 122, which is installed at the limiting portion 1214, and the axis of the clamping screw 122 is perpendicular to the axis of the first wiring hole 12131. When the lead to be connected is inserted into the first wiring hole 12131, the length of the clamping screw 122 extending into the first wiring hole 12131 can be adjusted by screwing the clamping screw 122, so that the lead to be connected is crimped onto the second conductive member 123 extending into the first wiring hole 12131, thereby realizing electrical connection between the lead to be connected and the second conductive member 123.

[0071] In other implementations, an elastic clamping member may also be provided in the first wiring hole 12131 and / or the second wiring hole 12141, so that when the wire or the first conductive member 112 is inserted into the corresponding wiring hole, the elastic force of the elastic clamping member can be used to clamp the wire and electrically connect it to the second conductive member 123, or to clamp the first conductive member 112 and electrically connect it to the second conductive member 123.

[0072] See also Figure 13 as well as Figure 14 As shown, in some implementations, the junction box assembly 100 further includes a panel 130, the panel 130 is detachably connected to the electrical box 110, a first chamber is formed on the side of the electrical box 110 facing the panel 130, the first chamber is used to accommodate the control mainboard 200, and the mounting slot 111 is formed on the side of the electrical box 110 away from the panel 130. When in use, the electrical box 110 and the panel 130 can be separated, and then the control mainboard 200 is installed in the first chamber, and the first conductive member 112 fixed on the electrical box 110 is electrically connected to the pin of the control mainboard 200. Then the panel 130 is connected to the electrical box 110, and the first chamber is closed to reduce the risk of the control mainboard 200 contacting with external dust.

[0073] The panel 130 may be an intelligent panel 130 having a display screen or control buttons. Before connecting the panel 130 to the electrical box 110, the control mainboard 200 may be electrically connected to the operating screen or control buttons on the panel 130 so that the user can operate the control mainboard 200 through the screen or buttons on the panel 130, thereby achieving control over various devices connected to the control mainboard 200.

[0074] like Figure 2 and Figure 13As shown, in some implementations, the electrical box 110 is provided with a first clamping groove 1181 and a first clamping protrusion 1182. Correspondingly, the panel 130 is provided with a second clamping groove 131 and a second clamping protrusion 132. When connecting the panel 130 to the electrical box 110, the first clamping protrusion 1182 is inserted into the second clamping groove 131, and then the second clamping protrusion 132 is toggled to engage the second clamping protrusion 132 with the first clamping groove 1181, completing the tight connection between the electrical box 110 and the panel 130. In other implementations, the connection method between the panel 130 and the electrical box 110 is not limited to clamping, and can also be connected by bonding or threaded connection.

[0075] See Figure 12 、 Figure 14 As shown, in some implementations, the electrical box 110 is provided with a first mounting hole 116. The junction box assembly 100 further includes a first fastener 150. The first fastener 150 passes through the first mounting hole 116 to connect the bottom box 140 to the electrical box 110. A seal 160 is also clamped between the electrical box 110 and the bottom box 140. The seal 160 is disposed around the first mounting hole 116 to seal the first mounting hole 116. Among them, the first fastener 150 can be a screw, or a bolt or a pin or a locking pin.

[0076] Sealing the first mounting hole 116 through the seal 160 can prevent dust from entering the first chamber inside the electrical box 110 through the first mounting hole 116 and contaminating the control main board 200. Specifically, the seal 160 has two positioning posts 161. The electrical box 110 is provided with a second mounting hole 117 on each side of each first mounting hole 116.

[0077] Before installing the electrical box 110 on the bottom box 140, first insert the two positioning posts 161 of the seal 160 into the corresponding second mounting holes 117 so that the through hole of the seal 160 is coaxially arranged with the first mounting hole 116. When the first fastener 150 passes through the first mounting hole 116, the first fastener 150 also passes through the through hole of the seal 160. As the first fastener 150 is tightened, the seal 160 will be gradually compressed. Since the inner diameter of the seal 160 is larger than the inner diameter of the first mounting hole 116, the seal 160 can seal the first mounting hole 116. One side of the seal 160 is pressed against the outside of the mounting post of the bottom box, and the other side of the seal 160 is pressed against the outside of the bottom box 140, preventing external dust from entering the electrical box 110 through the first mounting hole 116 and contaminating the control main board 200.

[0078] An embodiment of the present utility model further provides a thermostat, which includes the above-mentioned junction box assembly 100 and a control main board 200, wherein the control main board 200 is installed in the electrical box 110 of the junction box assembly 100. Since the thermostat adopts the above-mentioned junction box assembly 100, when the reserved lead length in the bottom box 140 is short, the wiring terminal 120 can be flipped to facilitate the wiring tool to extend into the bottom box 140 to complete the wiring work. That is to say, the present application provides a thermostat with a small requirement for the reserved lead length and has a wider scope of application.

[0079] An embodiment of the present utility model further provides an air conditioner, which includes the above-mentioned thermostat. Since the thermostat has a smaller requirement for the reserved lead length, the installation of the thermostat can be completed when the lead length is short, and it has a wider scope of application. The air conditioner here can be a central air conditioner.

[0080] Although the present utility model has been described with reference to the preferred embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A junction box assembly, characterized in that, It includes: An electrical box for being installed in a bottom box; And A terminal, which is detachably connected to the electrical box. The terminal is configured to be movable in the bottom box and capable of being electrically connected to a lead wire to be connected in the bottom box when detached from the electrical appliance, and is electrically connected to the electrical box when plugged into the electrical box.

2. The terminal box assembly according to claim 1, wherein An installation slot is provided on the electrical box, and a first conductive member is provided at the installation slot; The terminal includes a plugging connector and a second conductive member. The second conductive member is installed in the plugging connector. The plugging connector is detachably inserted into the installation slot, and the second conductive member is electrically connected to the first conductive member when the plugging connector is inserted into the installation slot.

3. The terminal box assembly according to claim 2, wherein The terminal further includes a first limiting post; The electrical box is further provided with a first limiting groove, and the first limiting groove communicates with the installation slot; When the plugging connector is inserted into the installation slot, the first limiting post is inserted into the first limiting groove.

4. The terminal box assembly according to claim 3, wherein The electrical box is further provided with a second limiting groove communicating with the installation slot, and the first limiting groove and the second limiting groove are spaced apart; The terminal is provided with a second limiting post, and the second limiting post is inserted into the second limiting groove when the terminal is plugged into the electrical box.

5. The terminal box assembly according to claim 4, wherein The first limiting groove communicates with the first side wall of the installation slot, and the second limiting groove communicates with the second side wall of the installation slot, wherein the first side wall and the second side wall are arranged at an angle.

6. The terminal box assembly according to any one of claims 2-5, wherein The plugging connector includes a plugging portion and a limiting portion that are perpendicular to each other; The installation slot is a stepped slot having a first limiting surface, and the terminal is configured such that when the plugging portion is inserted into the installation slot, the side surface of the limiting portion abuts against the first limiting surface.

7. The terminal box assembly according to claim 6, wherein A plurality of first wiring holes parallel to the first limiting surface are formed in the limiting portion, and each of the first wiring holes is for a lead wire to be connected to be inserted therein to be electrically connected to the terminal. A plurality of wire relief grooves are further formed on the outer surface of the electrical box, and the wire relief grooves correspond to the first wiring holes one by one.

8. The terminal box assembly according to claim 1, wherein It further includes a panel, which is detachably connected to the electrical box. A first chamber is formed on one side of the electrical box facing the panel, and the electrical box includes a first conductive member extending into the first chamber. The first chamber is for accommodating a control main board, and the first conductive member is for electrically connecting to the control main board.

9. The terminal box assembly according to claim 1, wherein The bottom box is provided with installation posts; The junction box assembly further includes a first fastener and a seal; The electrical box is provided with a first mounting hole, the aperture of the first mounting hole is smaller than the inner diameter of the seal, the seal is installed outside the electrical box, the seal is coaxially arranged with the first mounting hole, the first fastener is used to pass through the first mounting hole and connect with the mounting post so that the electrical box is installed on the bottom box, and the seal is configured such that when the first fastener is connected with the mounting post, one side of the seal abuts against the mounting post and the other side of the seal abuts against the electrical box.

10. A thermostat, characterized in that, It includes: The junction box assembly according to any one of claims 1-9, and a control main board; The control main board is installed inside the electrical box of the junction box assembly.

11. An air conditioner, characterized in that, It includes: The thermostat according to claim 10.

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