Controller with display unit convenient to replace

Abstract

The low-voltage circuit breaker controller comprises the display unit and a controller frame, the display unit is installed on the front portion of the controller, the side face of the display unit extends to form a plurality of outward unit limiting ribs which are distributed in a balanced mode, and grooves are formed in the top ends of the limiting ribs. Front-back through fixing holes are formed in the opposite side portions of the side faces, provided with the unit limiting ribs, of the display unit, the controller frame is located on the outer side of the periphery of the display unit, frame bosses facing the grooves are arranged at the positions, corresponding to the unit limiting ribs, of the controller frame, and the frame bosses extend into the grooves. A screw fixing part extends from the rear side part of the fixing hole of the controller frame, an embedded nut coaxial with the fixing hole is mounted on the screw fixing part, and the display unit is fixed in the embedded nut of the controller frame through a fixing screw penetrating through the fixing hole; the problem that a controller display unit in the prior art cannot be independently replaced or is tedious to replace is solved, and the beneficial effects of improving the operation and maintenance efficiency and improving the customer experience are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a controller for facilitating replacement of a display unit of a low-voltage circuit breaker. Background Art

[0002] The controller is a key component of the circuit breaker. Its display unit plays an important role in the information exchange between the user and the circuit breaker, making it easier for the user to manage and use the circuit breaker. When the display unit fails, it needs to be replaced in time. However, when the display unit of the existing controller fails, due to the overall structural design, the entire controller can only be replaced, or replacing the display unit is very cumbersome, which affects the user's use of the product and reduces the customer experience. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present application provides a controller for a low-voltage circuit breaker with a display unit that is easy to replace, so as to solve the problem that the display unit of the controller in the prior art cannot be replaced individually or the replacement is cumbersome.

[0004] To achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A controller for convenient replacement of a display unit comprises a display unit and a controller frame, wherein the display unit is mounted on the front of the controller, a plurality of evenly distributed outward unit limiting ribs are extended from the side of the display unit, a groove is arranged at the top of the unit limiting rib, and fixing holes which pass through from front to back are arranged at the opposite sides of the side where the unit limiting rib is arranged on the display unit, the controller frame is located on the outside around the display unit, and a frame boss facing the groove is arranged at the position of the controller frame corresponding to the unit limiting rib. When the display unit is assembled on the controller, the frame boss extends into the groove, and a screw fixing portion is extended from the rear side of the fixing hole on the controller frame, and an embedded nut coaxial with the fixing hole is installed on the screw fixing portion, and the display unit is fixed in the embedded nut of the controller frame by a fixing screw passing through the fixing hole.

[0006] Preferably, the groove is semicircular, and the frame boss is also semicircular with corresponding size.

[0007] Preferably, it also includes a rubber plug, a plug post is provided on the back of the rubber plug, and an expansion feature is provided on the front end of the plug post. The display unit is provided with plug holes around the fixing hole at the same position and number as the plug post. The rubber plug is fixed to the front of the fixing hole by inserting the plug post into the plug hole using the expansion feature, and the rubber plug completely covers the fixing hole.

[0008] Preferably, a handle is also provided on the surface of the rubber stopper.

[0009] Preferably, the plug hole and the plug column are both circular.

[0010] Preferably, it also includes an outer shell, a bottom cover, and a buckle, wherein the outer shell, the bottom cover, the buckle and the display unit together constitute a cabinet door unit, and the cabinet door unit is installed on the front of the controller, the outer shell is a hollow frame, the inner wall size matches the side size of the display unit, and the front is surrounded by frames to hold the display unit, the bottom cover assembles the display unit on the outer shell from the back side, and a first outer shell boss corresponding to the shape of the fixing hole is provided at a position corresponding to the fixing hole on the inner side of the front frame of the outer shell, and a second outer shell boss facing the groove is provided at a position corresponding to the unit limiting rib on the side of the outer shell. When the display unit is assembled to the outer shell, the second outer shell boss extends into the groove, and the first outer shell boss extends into the fixing hole. The back edge of the bottom cover extends backward to form a wing portion that is relatively symmetrical to the center, the buckle is mounted on the wing portion and fixed to the bottom cover, and uses the front to press the display unit against the frame of the outer shell, and the bottom cover is provided with a connector hole.

[0011] Preferably, the groove is semicircular, and the second boss of the housing is also semicircular with corresponding size.

[0012] Preferably, teeth portions opposite to each other along the installation direction are arranged on the outer side of the wing portion of the bottom cover and the inner side of the corresponding buckle, and the buckle is fixed to the wing portion of the bottom cover through the teeth portions.

[0013] Preferably, the bottom cover is further provided with a bottom cover limiting rib at the rear of the unit limiting rib, and the bottom cover uses the bottom cover limiting rib to support the unit limiting rib to push the display unit into the front frame of the housing.

[0014] Preferably, it further comprises a communication line, one end of which is connected to the inside of the controller, and the other end of which is connected to the connector of the display unit through the connector hole of the bottom cover of the cabinet door unit.

[0015] Compared with the prior art, the present invention has the following beneficial effects: by separating the display unit into a separate module, the present invention facilitates replacement of the display unit when a failure occurs, thereby improving operation and maintenance efficiency, reducing operation and maintenance costs, and improving customer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of a controller assembled in the present application;

[0017] Figure 2 A schematic diagram of a three-dimensional structure of a display unit assembly of an embodiment of a controller of the present application;

[0018] Figure 3a A front view of an embodiment of a controller assembled in accordance with the present application;

[0019] Figure 3b This is a cross-sectional view of an embodiment AA of a controller assembled in this application;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the side and back of an embodiment of the display unit of the present application;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the back side of the rubber plug installed in this application;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the side and back of an embodiment of the rubber stopper of the present application;

[0023] Figure 7 This is a schematic diagram of the three-dimensional structure of the side and back of an embodiment of the cabinet door unit of the present application;

[0024] Figure 8 This is an exploded schematic diagram of an embodiment of a cabinet door unit of the present application;

[0025] Figure 9a This is a front view of an embodiment of a cabinet door unit of the present application;

[0026] Figure 9b This is a cross-sectional view of an embodiment of a cabinet door unit of the present application taken along line AA;

[0027] Fig.10 It is a longitudinal cross-sectional schematic diagram of a prior art mechanism device;

[0028] Among them, 1-controller, 11-cabinet door unit, 111-display unit, 1111-groove, 1112-fixing hole, 112-housing, 1121-first boss of the housing, 1122-second boss of the housing, 113-bottom cover, 1131-bottom cover limiting rib, 114-buckle, 12-fixing screw, 13-rubber plug, 131-expansion feature, 14-controller frame, 141-frame boss, 15-communication line. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with 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 of the embodiments.

[0030] The present embodiment provides a controller 1 for conveniently replacing a display unit, comprising a display unit 111 and a controller frame 14. The display unit 111 is mounted on the upper front side of the controller 1. Three upward unit limiting ribs are evenly distributed extending from the upper side of the display unit 111. A groove 1111 is arranged at the top of each unit limiting rib. A fixing hole 1112 is arranged at the lower part of the side opposite to the side where the unit limiting rib of the display unit 111 is arranged. The controller frame 14 is located outside the periphery of the display unit 111. The position of the unit limiting rib of the controller frame 14 corresponding to the unit limiting rib is provided with three frame bosses 141 facing the groove 1111 on the inner side of the upper part in this embodiment. When the display unit 111 is assembled on the controller 1, the frame boss 141 extends into the groove 1111. The controller frame 14 has a screw fixing portion extending from the rear side of the fixing hole 1112. The screw fixing portion is equipped with an embedded nut coaxial with the fixing hole 1112. The display unit 111 is fixed in the embedded nut of the controller frame 14 by the fixing screw 12 passing through the fixing hole 1112. The installation position of the display unit 111 can be either on the upper side of the front of the controller 1 or on the lower side of the front. According to the height and convenience of the installation operation surface of the staff, the position of the unit limit rib and the fixing hole 1112 can be appropriately adjusted. For example, when the display unit 111 is installed on the lower side of the front of the controller 1, the unit limit rib is set to the lower side of the display unit 111, and the fixing hole 1112 is set to the upper side of the display unit 111, or set on the left and right sides, which are all feasible solutions. That is, the upper end groove 1111 of the display unit 111 is matched and fixed with the frame boss 141 of the controller 1, and the lower end is fixed by the fixing screw 12.

[0031] In this embodiment, the groove 1111 is set to be semicircular, and the frame boss 141 is also a semicircular shape of corresponding size, which has a relatively high smoothness in installation. Of course, it can also be set to be rectangular or sloping trapezoidal, which can be considered as equivalent solutions.

[0032] In order to make the front surface of the controller beautiful, this embodiment also includes a rubber plug 13, which is used to cover the fixing screw 12 and the fixing hole 1112. The back of the rubber plug 13 is provided with two plugs, and the front end of the plug is provided with an expansion feature 131. The display unit 111 is provided with two plug holes at the same position as the plug on both sides of the fixing hole 1112. The rubber plug 13 is fixed to the front of the fixing hole 1112 by plugging the plug into the plug hole using the expansion feature, so that the rubber plug 13 completely covers the fixing hole 1112. The back of the rubber plug can also hide other interfaces of the controller 1 that need to be exposed to achieve the purpose of dust prevention. In order to facilitate the removal of the rubber plug 13, the surface of the rubber plug 13 of this embodiment is also provided with a small horizontal handle. The rubber plug 13 is removed and the fixing screw 12 is unscrewed, and the display unit 111 can be removed from the controller 1. There is no special limitation on the shape of the plug and the plug hole. This embodiment uses the most convenient design of a circle, that is, the expansion feature 131 on the rubber plug 13 is embedded in the plug hole on the display unit 111 and fixed to the display unit 111.

[0033] When the circuit breaker is installed in the controller 1, since the cabinet door is generally fixed to the controller frame 14 by door hinges, the display unit 111 is led to the cabinet door to form the cabinet door unit 11, which can facilitate users to view and operate outside the cabinet. In this structural form, the display unit 111 can be installed on the cabinet door after adding the shell 112, which is the cabinet door unit 11. In this embodiment, the cabinet door unit 11 includes a shell 112, a bottom cover 113 and a buckle 114. The cabinet door unit 11 is installed at the front of the controller 1 like the display unit 111. The shell 112 is a hollow frame, and the inner wall size matches the side size of the display unit 111. The front is surrounded by a frame to hold the display unit 111. The bottom cover 113 assembles the display unit 111 on the shell 112 from the back. The inner side of the front frame of the shell 112 corresponds to the position of the fixing hole 1112. In this embodiment, a circular first convex shell corresponding to the shape of the fixing hole 1112 is provided at the lower part of the front frame. Platform 1121, the position of the unit limiting rib corresponding to the side of the shell 112, that is, the inner side of the upper side of the shell 112 is provided with three shell second bosses 1122 facing the groove 1111. When the display unit 111 is assembled to the shell 112, the shell second boss 1122 extends into the groove 1111, and the shell first boss 1121 extends into the fixing hole, which is the same as that on the aforementioned controller frame 14. In this embodiment, the groove 1111 is semicircular, and the shell second boss 1122 is also a semicircular of corresponding size, which can actually be equivalently transformed into a rectangle or trapezoid, etc.

[0034] The back edge of the bottom cover 113 extends backward to form wing portions that are relatively symmetrical to the center. In this embodiment, the wing portions are located on both sides of the bottom cover 113. The buckle 114 is mounted on the wing portions and fixed to the bottom cover 113 and uses the front portion to support the display unit 111 on the frame of the housing 112. A square connector hole is provided on the bottom cover 113. The fixing method of the bottom cover 113 and the buckle 114 can be any suitable method, such as using screw holes on the side of the wing portion of the bottom cover 113 and the corresponding position of the buckle to fix with fasteners. The method adopted in this embodiment can be installed without tools and is more convenient, that is, the outer side of the wing portion of the bottom cover 113 and the corresponding inner side of the buckle 114 are provided with relative teeth along the installation direction. When the buckle 114 is mounted on the wing portion, it is fixed to the wing portion of the bottom cover 113 through the teeth.

[0035] In order to better support the display unit 111 in the front frame of the housing 112, the bottom cover 113 is located at the rear of the unit limiting ribs. In this embodiment, four vertical bottom cover limiting ribs 1131 are also arranged on the upper part of the housing 112, and a horizontal bottom cover limiting rib 1131 is connected to the lower part of the four bottom cover limiting ribs 1131. The bottom cover 113 uses the horizontal bottom cover limiting ribs 1131 to support the unit limiting ribs to support the display unit 111 in the front frame of the housing 112. This arrangement of the bottom cover limiting ribs 1131 has a relatively good strength. Of course, if the injection molding error is not considered, three vertical bottom cover limiting ribs 1131 can also be directly arranged to support the unit limiting ribs of the display unit 111. The top can also be provided with a limiting block running through the left and right to support the display unit 111, which is not limited to supporting the upper unit limiting ribs, and can also support the solid part of the lower part of the unit limiting ribs, which can be regarded as equivalent technical solutions.

[0036] For the connection method between the cabinet door unit 11 and the controller 1 body, an appropriate method can be used, such as a connector plug-in method. When the connector of the controller 1 body is not below the connector of the cabinet door unit 11, a cable connection can also be used to improve the installation flexibility of the cabinet door unit 11 and different controllers 1. In this embodiment, the controller 1 also includes a communication line 15, one end of which is connected to the inside of the controller 1, and the other end is connected to the connector of the display unit through the connector hole of the bottom cover 113 of the cabinet door unit 11.

[0037] In the description of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, if the terms "first", "second", etc. appear, they are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0038] The above is only a preferred specific implementation method of the present scheme, but the protection scope required by the present scheme is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed in the present scheme according to the technical scheme and the inventive concept of the present application, which should be covered by the protection scope of the present application.

Claims

1. A controller with a display unit that can be easily replaced, comprising a display unit (111) and a controller frame (14), wherein the display unit (111) is mounted on the front of the controller (1), and wherein: The side of the display unit (111) is provided with a plurality of evenly distributed outward unit limiting ribs, the top of the unit limiting rib is provided with a groove (1111), the side opposite to the side of the display unit (111) where the unit limiting rib is provided is provided with a fixing hole (1112) that passes through from front to back, the controller frame (14) is located outside the periphery of the display unit (111), the controller frame (14) is provided with a frame boss (141) facing the groove (1111) at a position corresponding to the unit limiting rib, when the display unit (111) is assembled on the controller (1), the frame boss (141) extends into the groove (1111), the controller frame (14) is further provided with a screw fixing portion at the rear side of the fixing hole (1112), the screw fixing portion is provided with an embedded nut coaxial with the fixing hole (1112), and the display unit (111) is fixed in the embedded nut of the controller frame (14) by means of a fixing screw (12) passing through the fixing hole (1112).

2. The controller for conveniently replacing a display unit according to claim 1, characterized in that: The groove (1111) is semicircular in shape, and the frame boss (141) is also semicircular in shape with corresponding size.

3. The controller according to claim 1, characterized in that: It also includes a rubber plug (13), the back of the rubber plug (13) is provided with a plug post, the front end of the plug post is provided with an expansion feature (131), the display unit (111) is provided with plug holes around the fixing hole (1112) in the same position and number as the plug post, the rubber plug (13) is fixed to the front of the fixing hole (1112) by inserting the plug post into the plug hole using the expansion feature, and the rubber plug (13) completely covers the fixing hole (1112).

4. The controller for conveniently replacing a display unit according to claim 3, characterized in that: A handle is also provided on the surface of the rubber stopper (13).

5. The controller for conveniently replacing a display unit according to claim 3, characterized in that: The plug hole and the plug column are both circular.

6. The controller for conveniently replacing a display unit according to claim 1, characterized in that: The controller (1) further comprises a housing (112), a bottom cover (113), and a buckle (114); the housing (112), the bottom cover (113), the buckle (114), and the display unit (111) together constitute a cabinet door unit (11); the cabinet door unit (111) is installed at the front of the controller (1); the housing (112) is in the shape of a hollow frame, the inner wall size of which matches the side size of the display unit (111); a frame is provided around the front to hold the display unit (111); the bottom cover (113) assembles the display unit (111) on the housing (112 from the rear; a position on the inner side of the front frame of the housing (112) corresponding to the fixing hole (1112) is provided with a shape corresponding to the fixing hole (1112) A first housing protrusion (1121); a second housing protrusion (1122) facing the groove (1111) is arranged on the side of the housing (112) at a position corresponding to the unit limiting rib; when the display unit (111) is assembled on the housing (112), the second housing protrusion (1122) extends into the groove (1111); the first housing protrusion (1121) extends into the fixing hole; a wing portion symmetrical to the center is extended backward from the edge of the back side of the bottom cover (113); the buckle (114) is mounted on the wing portion and fixed with the bottom cover (113); and the display unit (111) is supported on the frame of the housing (112) with the front portion; and a connector hole is provided on the bottom cover (113).

7. The controller for conveniently replacing a display unit according to claim 6, characterized in that: The groove (1111) is semicircular in shape, and the second boss (1122) of the housing is also semicircular in shape with corresponding size.

8. The controller for conveniently replacing a display unit according to claim 6, characterized in that: The outer side of the wing of the bottom cover (113) and the inner side of the corresponding buckle (114) are provided with teeth opposite to each other along the installation direction, and the buckle (114) is fixed on the wing of the bottom cover (113) through the teeth.

9. The controller for conveniently replacing a display unit according to claim 6, characterized in that: The bottom cover (113) is also provided with a bottom cover limiting rib (1131) at the rear of the unit limiting rib, and the bottom cover (113) uses the bottom cover limiting rib (1131) to press against the unit limiting rib to push the display unit (111) into the front frame of the housing (112).

10. The controller for conveniently replacing a display unit according to claim 6, characterized in that: It also includes a communication line (15), one end of which is connected to the inside of the controller (1), and the other end of which is connected to the connector of the display unit through the connector hole of the bottom cover (113) on the cabinet door unit (11).

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