Motor circuit breaker

Abstract

The utility model discloses a motor circuit breaker, which relates to the technical field of circuit breakers and comprises a shell and a cover plate. The shell comprises a first rotary connecting part and a first connecting part. And the cover plate comprises a second rotary connecting part and a second connecting part. The first rotary connecting part is rotatably connected with the second rotary connecting part, and when the cover plate is closed, the first connecting part can be connected with the second connecting part. The shell and / or the cover plate are / is provided with a hand buckling groove, and the hand buckling groove is located in the side, away from the second rotary connecting part, of the cover plate. According to the motor circuit breaker, the connection mode of the cover plate and the shell can be simplified, and rapid opening and closing of the cover plate are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of circuit breakers, and in particular to a motor circuit breaker. Background Art

[0002] A motor circuit breaker is an electrical device used to protect motors. A current adjustment knob is usually provided on the motor circuit breaker. By operating the current adjustment knob, the instantaneous tripping current value of the circuit breaker is adjusted to achieve overload protection for the motor.

[0003] In order to protect the current adjustment knob from damage or misoperation, a protective cover is usually provided on the existing motor circuit breaker, which is connected to the surface of the housing of the motor circuit breaker and can be opened or closed. However, the connection structure between the existing cover and the housing is relatively complex, inconvenient to manufacture and not conducive to rapid opening and closing, affecting the user experience. Utility Model Content

[0004] The purpose of the present application is to provide a motor circuit breaker, which can simplify the connection method between the cover plate and the housing and facilitate the rapid opening and closing of the cover plate.

[0005] In a first aspect, an embodiment of the present application provides a motor circuit breaker, comprising a housing and a cover plate. The housing comprises a first rotating connection portion and a first connection portion. The cover plate comprises a second rotating connection portion and a second connection portion. The first rotating connection portion is rotatably connected to the second rotating connection portion, and when the cover plate is closed, the first connection portion and the second connection portion can be connected. A hand grip groove is provided on the housing and / or the cover plate, and the hand grip groove is located on a side of the cover plate away from the second rotating connection portion.

[0006] Based on the above-mentioned embodiments of the present application, the rotational connection between the cover plate and the shell has the advantages of simple structure and convenient opening and closing of the cover plate relative to the shell. The finger groove is arranged close to the side of the cover plate away from the second rotational connection part, which is convenient for applying force to the cover plate from the side of the cover plate away from the second rotational connection part, which is conducive to quickly opening the cover plate. In addition, the first connection part provided on the shell and the second connection part provided on the cover plate are used to limit the movement of the cover plate when the cover plate is closed on the shell, and the cover plate is locked on the shell, which can reduce the risk of the cover plate being easily opened in the closed state, improve the connection stability of the cover plate, and thus reduce the risk of interference or misoperation of the adjustment knob.

[0007] In an optional embodiment, a first hand-grip groove is provided on the housing, the first hand-grip groove is provided on the wall surface of the housing close to the cover plate, and is located on a side away from the first rotating connection part, and the side of the cover plate away from the second rotating connection part can cover part of the first hand-grip groove. And / or, a second hand-grip groove is provided on the cover plate, the second hand-grip groove is provided on the wall surface of the cover plate close to the housing, and is located on a side of the cover plate away from the second rotating connection part.

[0008] Based on the above-mentioned embodiments of the present application, the first hand-grip groove and the second hand-grip groove are both provided to facilitate the operation of the cover plate so that the cover plate is opened relative to the housing. Only one of the first hand-grip groove and the second hand-grip groove can be provided, or both can be provided. When only one of them is provided, the requirement of convenient operation of opening the cover plate can be met, and the processing steps are less. When both the first hand-grip groove and the second hand-grip groove are provided, the cooperation between the two can provide a larger operating space at the changed position, facilitate the application of force to the cover plate, and be more conducive to the operation of opening the cover plate.

[0009] In an optional embodiment, the notch of the first hand-holding groove is opposite to the notch of the second hand-holding groove, and the size of the first hand-holding groove is matched with the size of the second hand-holding groove.

[0010] Based on the above-mentioned embodiments of the present application, this arrangement can be used to combine the first hand latch groove and the second hand latch groove into a groove with a larger space, thereby increasing the operating space at this position and further improving the convenience of rotating the operating cover.

[0011] In an optional embodiment, the first rotating connection part includes a rotating shaft arranged on the shell, and the second rotating connection part includes a buckle arranged on the cover plate, and the buckle is rotationally connected to the rotating shaft.

[0012] Based on the above-mentioned embodiments of the present application, the rotational connection between the cover and the shell is realized by the cooperation of the rotating shaft and the buckle, which has the characteristics of simple cooperation, easy assembly and easy opening and closing of the cover relative to the shell, and has high practicality.

[0013] In an optional embodiment, the buckle has a notch, and the rotating shaft can enter the buckle through the notch. In a direction perpendicular to the cover plate, the cross-section of the buckle is C-shaped.

[0014] Based on the above-mentioned embodiments of the present application, the buckle is set as a C-shaped buckle. On the one hand, the notch of the C-shaped buckle facilitates the buckle to be connected with the rotating shaft, so that the buckle can be smoothly installed on the rotating shaft. On the other hand, the rest of the C-shaped buckle can be wrapped on the rotating shaft to prevent the buckle from being separated from the rotating shaft. This setting form has a simple structure, is easy to assemble, and has a stable and reliable rotation connection, which is conducive to the cover plate being stably connected to the shell and being able to achieve stable opening and closing.

[0015] In an optional embodiment, a mounting groove is provided on the shell, the rotating shaft is provided in the mounting groove, an extension portion is provided on the cover plate, the buckle is provided on the wall surface of the extension portion close to the shell, the mounting groove is adapted to the extension portion, an avoidance hole is provided in the mounting groove, the buckle is connected to the rotating shaft and is partially located in the avoidance hole.

[0016] Based on the above-mentioned embodiments of the present application, the rotating shaft is arranged in the installation groove, and the buckle is arranged on the extension part, so that when the buckle is extended into the installation groove and connected with the rotating shaft, the extension part can cover the notch of the installation groove, thereby protecting the buckle and the rotating shaft, and preventing the rotating connection between the cover plate and the shell from being affected by the failure of the rotating connection between the buckle and the rotating shaft. In addition, the setting of the avoidance hole in the installation groove is used to avoid the buckle rotating on the rotating shaft, which can save the volume of the shell while playing the avoidance role, and reduce the impact on other components on the shell.

[0017] In an optional embodiment, two avoidance holes are arranged at intervals in the installation groove, and two buckles are arranged at intervals on the extension part. The two buckles are rotatably connected to the rotating shaft at the same time, and the two buckles correspond to the two avoidance holes.

[0018] Based on the above embodiment of the present application, two avoidance holes are provided to avoid the two buckles arranged at intervals, so that the two buckles can rotate relative to the shaft. The two buckles arranged at intervals are connected to the shaft at the same time, which can improve the rotational connection stability between the cover plate and the housing.

[0019] In an optional embodiment, a limiting platform is provided on the wall surface of the shell close to the cover plate, and the limiting platform is located close to the mounting groove. When the cover plate is rotated to open, the side wall of the extension portion of the cover plate can abut against the limiting platform.

[0020] Based on the above-mentioned embodiments of the present application, the setting of the limit platform can limit the opening angle of the cover plate, thereby preventing the cover plate from being damaged due to excessive opening angle.

[0021] In an optional embodiment, the first connecting portion includes a hanging hole provided on the shell, and the second connecting portion includes a hook provided on the cover plate, and when the cover plate is closed, the hook is hung to the hanging hole.

[0022] Based on the above-mentioned embodiments of the present application, the hook and the hanging hole are connected to each other. When the cover plate is closed on the shell, the hook can be directly extended into the hanging hole and hung in the hanging hole, which has the characteristics of simple structure, stable connection and simple connection method.

[0023] In an optional embodiment, a lead seal connection portion is provided on a wall surface of the shell close to the cover plate, and a through hole is provided on the cover plate, and the lead seal connection portion can partially pass through the through hole.

[0024] Based on the above-mentioned embodiments of the present application, the lead seal connecting part is used to connect the lead seal. When the cover is closed on the shell, the lead seal connecting part can extend from the through hole opened on the cover so as to connect the lead seal on the lead seal connecting part from the side of the cover away from the shell, thereby locking the cover in the closed position. The cover can only be rotated and opened after the lead seal is released, thereby further preventing the adjustment knob protected by the cover from being misoperated, improving the protection performance and not affecting the rapid opening and closing of the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is a schematic diagram of the structure of the motor circuit breaker in the open state provided in an embodiment of the present application.

[0027] Figure 2 This is a schematic diagram of the structure of the motor circuit breaker in the closed state provided by an embodiment of the present application.

[0028] Figure 3 This is one of the views of the motor circuit breaker provided in the embodiment of the present application without the cover plate installed.

[0029] Figure 4 The second view of the motor circuit breaker provided in the embodiment of the present application without the cover plate installed.

[0030] Figure 5 A schematic diagram of the structure of the cover plate provided in an embodiment of the present application.

[0031] Figure 6 Another view of the upper cover of the motor circuit breaker provided in the embodiment of the present application in the closed state.

[0032] Description of reference numerals:

[0033] 100. Motor circuit breaker; 1. Housing; 11. First rotating connection; 111. Rotating shaft; 12. First connection; 13. First finger groove; 14. Mounting groove; 15. Avoidance hole; 16. Limiting platform; 17. Lead seal connection; 2. Cover plate; 21. Second rotating connection; 211. Buckle; 2111. Notch; 22. Second connection; 23. Second finger groove; 24. Extension; 25. Through hole. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution 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 part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] The rated current of a motor refers to the effective current when the motor runs for a long time under the rated voltage. The motor circuit breaker, as an electrical device for controlling and protecting the motor, should generally use 1.2-1.5 times the rated current of the motor as the rated current of the motor circuit breaker. In addition, the motor circuit breaker is usually provided with an adjustment mechanism for adjusting the rated current. The rated current of the motor circuit breaker is adjusted to achieve the adjustment of the motor protection effect.

[0040] The adjustment mechanism on the existing motor circuit breaker is usually set as an adjustment knob, and the adjustment knob is set on the housing of the motor circuit breaker. A cover plate is set on the housing to protect the adjustment knob to prevent the adjustment knob from being damaged or misoperated. However, due to the complex structure of the existing cover plate and the complex connection structure between the cover plate and the housing, the connection stability between the cover plate and the housing is low, which makes it inconvenient to quickly open the cover plate and operate the adjustment knob, affecting the user experience.

[0041] Based on this, an embodiment of the present application provides a motor circuit breaker that can simplify the connection method between the cover and the shell, facilitate the rapid opening and closing of the cover, and further facilitate the operation of the adjustment knob to optimize the user experience.

[0042] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0043] Please refer to Figure 1 and Figure 2 The present embodiment provides a motor circuit breaker 100, comprising a housing 1 and a cover plate 2. The housing 1 comprises a first rotating connection portion 11 and a first connection portion 12. The cover plate 2 comprises a second rotating connection portion 21 and a second connection portion 22. The first rotating connection portion 11 is rotatably connected to the second rotating connection portion 21, and when the cover plate 2 is closed, the first connection portion 12 and the second connection portion 22 can be connected. A hand grip groove is provided on the housing 1 and / or the cover plate 2, and the hand grip groove is located on a side of the cover plate 2 away from the second rotating connection portion 21.

[0044] Based on the above-mentioned embodiments of the present application, the cover plate 2 and the housing 1 are connected in a rotating manner, which has the advantages of simple structure and convenient opening and closing of the cover plate 2 relative to the housing 1. Specifically, the cover plate 2 is covered on the housing 1, the housing 1 is provided with a first rotating connection part 11, and the cover plate 2 is provided with a second rotating connection part 21. The cover plate 2 is rotatably connected to the first rotating connection part 11 on the housing 1 through the second rotating connection part 21, so that the cover plate 2 can rotate around the first rotating connection part 11.

[0045] Reference Figure 1 and Figure 2 The setting position of the hand-grip groove is close to the side of the cover plate 2 away from the second rotating connection part 21, so that it is convenient to apply force to the cover plate 2 from the side of the cover plate 2 away from the second rotating connection part 21, which is conducive to quickly opening the cover plate 2. The setting of the hand-grip groove has a simple structure, and the setting position is convenient for operation and labor-saving. While protecting the adjustment knob, it effectively improves the connection stability and convenience of the cover plate 2 on the shell 1, and enhances the user experience. Among them, the hand-grip groove can be set on the shell 1, and can also be set on the cover plate 2. Of course, it can also be set on both the shell 1 and the cover plate 2. The cooperation between the two is more conducive to quickly opening the cover plate 2, and the operation is more convenient.

[0046] In addition, refer to Figure 1 The first connection portion 12 provided on the housing 1 and the second connection portion 22 provided on the cover plate 2 are used to limit the movement of the cover plate 2 when the cover plate 2 is covered on the housing 1, and lock the cover plate 2 on the housing 1, which can reduce the risk of the cover plate 2 being easily opened in the covered state, improve the connection stability of the cover plate 2, and thus reduce the risk of interference or misoperation of the adjustment knob. Among them, the first connection portion 12 and the second connection portion 22 are usually configured to be connected to each other and easy to open when the cover plate 2 needs to be opened, such as a snap-on structure, or an adhesive structure or other matching forms.

[0047] Reference Figure 1 and Figure 2 In some examples, the housing 1 is provided with a first hand-grip groove 13, which is provided on the wall surface of the housing 1 close to the cover plate 2 and is located on a side away from the first rotating connection portion 11, and the side of the cover plate 2 away from the second rotating connection portion 21 can cover part of the first hand-grip groove 13. And / or, the cover plate 2 is provided with a second hand-grip groove 23, which is provided on the wall surface of the cover plate 2 close to the housing 1 and is located on a side of the cover plate 2 away from the second rotating connection portion 21.

[0048] Based on the above-mentioned embodiments of the present application, the first hand-grip groove 13 and the second hand-grip groove 23 are both provided to facilitate the operation of the cover plate 2 so that the cover plate 2 is opened relative to the housing 1. Only one of the first hand-grip groove 13 and the second hand-grip groove 23 can be provided, or both can be provided. When only one of them is provided, the requirement of facilitating the operation of opening the cover plate 2 can be met, and the processing steps are less. When both the first hand-grip groove 13 and the second hand-grip groove 23 are provided, the cooperation between the two can provide a larger operating space at the changed position, facilitate the application of force to the cover plate 2, and be more conducive to the operation of opening the cover plate 2.

[0049] Specifically, refer to Figure 1 and Figure 2 The first hand groove 13 is opened on the wall surface of the shell 1 close to the cover plate 2, and is located on the side away from the first rotating connection part 11. The opening of the first hand groove 13 faces the cover plate 2, and the second rotating connection part 21 on the cover plate 2 is connected to the first rotating connection part 11 on the shell 1, that is, the side of the cover plate 2 away from the second rotating connection part 21 is opposite to the first hand groove 13. When operating the cover plate 2 to open, you only need to put your hand into the first hand groove 13 and apply force from the first hand groove 13 to the wall surface of the cover plate 2 toward the shell 1, so that the cover plate 2 can be rotated around the first rotating connection part 11.

[0050] The second hand groove 23 is formed on the wall surface of the cover plate 2 facing the shell body 1 and is located on the side away from the second rotating connection portion 21. The second hand groove 23 faces the shell body 1. When operating the cover plate 2 to open, one only needs to put his hand into the second hand groove 23 and apply force to the bottom of the groove in the second hand groove 23, that is, apply force to the wall surface of the cover plate 2 facing the shell body 1, so that the cover plate 2 rotates around the first rotating connection portion 11.

[0051] When the first hand groove 13 and the second hand groove 23 are provided at the same time, the first hand groove 13 is provided on a side of the shell 1 away from the first rotating connection part 11, and the second hand groove 23 is provided on a side of the cover plate 2 away from the second rotating connection part 21. The positions of the first hand groove 13 and the second hand groove 23 correspond, that is, when opening the cover plate 2, extending the hand into the first hand groove 13 is also in the second hand groove 23 at the same time, so that the hand can be easily touched by the wall of the cover plate 2 facing the shell 1, and the opening operation is more convenient.

[0052] Among them, refer to Figure 1 and Figure 2 The first hand groove 13 is located on the side of the shell 1 away from the first rotating connection part 11, and the second hand groove 23 is located on the side of the cover 2 away from the second rotating connection part 21. The setting positions of the first hand groove 13 and the second hand groove 23 are opposite to the rotating connection position of the cover 2. In the operation of opening the cover 2, the side of the cover 2 away from the second rotating part is subjected to force, and the force direction of the cover 2 is the rotation direction of the cover 2. Compared with the situation of being set at other positions, the force direction of this embodiment is single, the operation is simple, and the cover 2 opens more smoothly.

[0053] Reference Figure 1 and Figure 2 In some examples, the notch of the first hand-grip groove 13 is opposite to the notch of the second hand-grip groove 23 , and the size of the first hand-grip groove 13 is adapted to the size of the second hand-grip groove 23 .

[0054] Based on the above-mentioned embodiments of the present application, this arrangement can be used to combine the first hand groove 13 and the second hand groove 23 into a groove with a larger space, thereby increasing the operating space at this position and further improving the convenience of rotating the operating cover 2.

[0055] Specifically, the first hand groove 13 is arranged on the wall surface of the shell 1 facing the cover plate 2, and the notch of the first hand groove 13 faces the cover plate 2. The second hand groove 23 is arranged on the wall surface of the cover plate 2 facing the shell 1, and the notch of the second hand groove 23 faces the shell 1. The notches of the first hand groove 13 and the second hand groove 23 are opposite to each other, so as to form a larger operating space between the side of the cover body away from the second rotating connection part 21 and the shell 1, so as to facilitate the hand to reach in to apply force to the cover plate 2 to rotate the cover plate 2.

[0056] The shapes of the first hand-grip groove 13 and the second hand-grip groove 23 can be set to circular, square or polygonal shapes. In the embodiment of the present application, the first hand-grip groove 13 is set to a circular groove, and the second hand-grip groove 23 is set to a semicircular groove. The radius of the first hand-grip groove 13 and the second hand-grip groove 23 are the same. This setting form is convenient for processing on the one hand, and fits the shape of the finger on the other hand, which is convenient for manual operation.

[0057] Reference Figures 3 to 5 In some examples, the first rotating connection portion 11 includes a rotating shaft 111 disposed on the housing 1 , and the second rotating connection portion 21 includes a buckle 211 disposed on the cover plate 2 , and the buckle 211 is rotatably connected to the rotating shaft 111 .

[0058] Based on the above-mentioned embodiments of the present application, the rotational connection between the cover 2 and the shell 1 is realized by the matching form of the rotating shaft 111 and the buckle 211, which has the characteristics of simple matching form, easy assembly and easy opening and closing of the cover 2 relative to the shell 1, and has high practicality.

[0059] There are also various forms of cooperation between the rotating shaft 111 and the buckle 211. For example, the rotating shaft 111 and the buckle 211 are relatively fixed, and when the cover plate 2 is subjected to force, the cover plate 2 is opened relative to the housing 1 only by the rotation of the rotating shaft 111. Another example is that the rotating shaft 111 is fixed, and the buckle 211 rotates relative to the rotating shaft 111. When the cover plate 2 is subjected to force, the cover plate 2 is opened relative to the housing 1 by the rotation of the buckle 211 on the rotating shaft 111.

[0060] In the embodiment of the present application, the second matching form mentioned above is adopted between the rotating shaft 111 and the buckle 211. In this matching form, the rotating shaft 111 only needs to be fixedly set on the shell 1, and the cover 2 is rotatably connected to the rotating shaft 111 through the buckle 211. Compared with the first matching form mentioned above, the second one does not need to set a rotating connection structure between the rotating shaft 111 and the shell 1, simplifies the structural design of the shell 1, and reduces the impact of installing the cover 2 on the structure and volume of the shell 1.

[0061] Of course, the settings of the rotating shaft 111 and the buckle 211 can be interchanged, that is, the first rotating connection part 11 is set as the buckle 211, and the second rotating connection part 21 is set as the rotating shaft 111. The rotational connection between the cover 2 and the shell 1 can also be achieved, which has the same technical effect as the aforementioned setting method and will not be repeated here.

[0062] Reference Figure 5 In some examples, the buckle 211 has a notch 2111, and the shaft 111 can enter the buckle 211 through the notch 2111. In a direction perpendicular to the cover plate 2, the cross-section of the buckle 211 is C-shaped.

[0063] Based on the above-mentioned embodiment of the present application, the buckle 211 is set as a C-shaped buckle 211. On the one hand, the notch 2111 of the C-shaped buckle 211 facilitates the buckle 211 to be connected with the rotating shaft 111, so that the buckle 211 can be smoothly installed on the rotating shaft 111. On the other hand, the rest of the C-shaped buckle 211 can be wrapped on the rotating shaft 111 to prevent the buckle 211 from being separated from the rotating shaft 111. This setting form has a simple structure, is easy to assemble, and has a stable and reliable rotation connection, which is conducive to the cover plate 2 being stably connected to the housing 1 and being able to achieve stable opening and closing.

[0064] Reference Figures 4 to 6 In some examples, a mounting groove 14 is provided on the shell 1, the rotating shaft 111 is provided in the mounting groove 14, an extension portion 24 is provided on the cover plate 2, a buckle 211 is provided on the wall surface of the extension portion 24 close to the shell 1, the mounting groove 14 is adapted to the extension portion 24, an avoidance hole 15 is provided in the mounting groove 14, the buckle 211 is connected to the rotating shaft 111 and is partially located in the avoidance hole 15.

[0065] Based on the above-mentioned embodiments of the present application, the rotating shaft 111 is arranged in the mounting groove 14, and the buckle 211 is arranged on the extension portion 24. In this way, when the buckle 211 extends into the mounting groove 14 and is connected with the rotating shaft 111, the extension portion 24 can cover the notch of the mounting groove 14 to protect the buckle 211 and the rotating shaft 111, thereby preventing the rotating connection between the cover plate 2 and the shell 1 from being affected by the failure of the rotating connection between the buckle 211 and the rotating shaft 111.

[0066] Reference Figure 4 The mounting groove 14 is provided on the wall of the housing 1 facing the cover plate 2, the rotating shaft 111 is provided in the mounting groove 14, and the two ends of the rotating shaft 111 are correspondingly fixed on two opposite groove walls in the mounting groove 14. The extension portion 24 is provided on the side of the cover plate 2 away from the second hand-grip groove 23, referring to Figure 5 The buckle 211 is arranged on the extension part 24 and is located on the wall of the extension part 24 facing the mounting groove 14. During the assembly process of the cover plate 2 and the housing 1, the buckle 211 extends into the mounting groove 14 and is connected to the rotating shaft 111, and the extension part 24 covers the notch of the mounting groove 14, which can prevent foreign matter from affecting the rotating connection.

[0067] In addition, refer to Figure 6 The avoidance hole 15 in the mounting groove 14 is used to avoid the buckle 211 rotating on the rotating shaft 111. While playing the avoidance role, it can also save the volume of the housing 1 and reduce the impact on other components on the housing 1.

[0068] The avoidance hole 15 is opened on the groove wall of the installation groove 14, which can play an avoidance role for part of the buckle 211 connected to the rotating shaft 111. When the buckle 211 is connected to the rotating shaft 111 and rotates relative to the rotating shaft 111, part of the buckle 211 can enter the avoidance hole 15. This arrangement is conducive to reducing the volume of the shell 1, and there is no need to protrude the rotating shaft 111 outside the shell 1, which effectively improves the utilization rate of the space on the shell 1 without affecting other components in the shell 1.

[0069] Reference Figure 6 In some examples, two avoidance holes 15 are spaced apart in the mounting groove 14 , and two buckles 211 are spaced apart on the extension portion 24 . The two buckles 211 are simultaneously rotatably connected to the rotating shaft 111 , and the two buckles 211 correspond to the two avoidance holes 15 .

[0070] Based on the above-mentioned embodiment of the present application, two avoidance holes 15 are provided to avoid the two buckles 211 arranged at intervals, so that the two buckles 211 can rotate relative to the rotating shaft 111. The two buckles 211 arranged at intervals are connected to the rotating shaft 111 at the same time, which can improve the rotational connection stability between the cover plate 2 and the housing 1.

[0071] The buckle 211 can be provided as one or more. When one buckle 211 is provided, the width of the buckle 211 can be the same as the length of the shaft 111. One buckle 211 is rotatably connected to the entire shaft 111, and the width of the corresponding avoidance hole 15 is the same as the width of the buckle 211, so as to accurately avoid the buckle 211. Alternatively, multiple buckles 211 are provided, and the multiple buckles 211 are spaced apart from each other. The multiple buckles 211 are spaced apart and connected to the shaft 111, which has the same function as the aforementioned provision of a wider buckle 211.

[0072] Reference Figure 1 and Figure 3 In some examples, a limiting platform 16 is provided on the wall surface of the shell 1 close to the cover 2 , and the limiting platform 16 is located close to the mounting groove 14 . When the cover 2 is rotated to open, the side wall of the extension portion 24 of the cover 2 can abut against the limiting platform 16 .

[0073] Based on the above-mentioned embodiments of the present application, the setting of the limit platform 16 can limit the opening angle of the cover plate 2, thereby preventing the cover plate 2 from being damaged due to an excessively large opening angle.

[0074] Specifically, the limit platform 16 is arranged on the wall surface of the housing 1 facing the cover plate 2, and the limit platform 16 is located on both sides of the mounting groove 14. The extension portion 24 is arranged in the middle of the side of the cover plate 2 away from the second hand-grip groove 23. When the cover plate 2 is rotating, the side of the extension portion 24 on the cover plate 2 abuts against the limit platform 16, thus limiting the cover plate 2 from rotating further. This position is the maximum rotation position of the cover plate 2.

[0075] Reference Figure 4 and Figure 5 In some examples, the first connection portion 12 includes a hanging hole provided on the housing 1, and the second connection portion 22 includes a hook provided on the cover plate 2. When the cover plate 2 is closed, the hook is hung to the hanging hole.

[0076] Based on the above-mentioned embodiments of the present application, the hook and the hanging hole are connected to each other. When the cover plate 2 is closed on the shell 1, the hook can be directly extended into the hanging hole and hung in the hanging hole, which has the characteristics of simple structure, stable connection and simple connection method.

[0077] The hook hole is formed on the wall of the housing 1 facing the cover plate 2, and the hook is arranged on the wall of the cover plate 2 facing the housing 1. When the cover plate 2 is covered on the housing 1, the hook is correspondingly inserted into the hook hole and hooked in the hook hole to lock the cover plate 2 and prevent the cover plate 2 from being easily opened. When the cover plate 2 needs to be opened, it is only necessary to apply force to the cover plate 2 at the first hand-grip groove 13 or the second hand-grip groove 23 to pull the hook out of the hook hole, thereby completing the opening of the cover plate 2. This arrangement can not only play a locking role but also not affect the rapid opening of the cover plate 2, and is convenient for operating the cover plate 2 to open and close.

[0078] In an optional embodiment, the positions of the hanging hole and the hook can be interchanged, that is, the first connecting portion 12 is set as a hook, and the second connecting portion 22 is set as a hanging hole, which can also achieve the effect of the aforementioned setting form and will not be repeated here.

[0079] In addition, the first connecting portion 12 and the second connecting portion 22 may also adopt other connection forms, such as a magnetic connection, that is, a first magnetic component is arranged on the shell 1, and a second magnetic component is arranged on the cover 2. When the cover 2 is closed, the first magnetic component and the second magnetic component are adsorbed to achieve locking of the cover 2. To open the cover 2, it is only necessary to overcome the magnetic attraction force.

[0080] Reference Figure 6 In some examples, a lead seal connection portion 17 is provided on the wall surface of the housing 1 close to the cover plate 2 , and a through hole 25 is provided on the cover plate 2 , and the lead seal connection portion 17 can partially pass through the through hole 25 .

[0081] Based on the above-mentioned embodiments of the present application, the lead seal connecting portion 17 is used to connect the lead seal. When the cover plate 2 is closed on the shell body 1, the lead seal connecting portion 17 can extend from the through hole 25 opened on the cover plate 2, so as to connect the lead seal on the lead seal connecting portion 17 from the side of the cover plate 2 away from the shell body 1, thereby locking the cover plate 2 in the closed position. Only when the lead seal is released can the cover plate 2 be operated to rotate and open, further preventing the adjustment knob protected by the cover plate 2 from being misoperated, thereby improving the protection performance and not affecting the rapid opening and closing of the cover plate 2.

[0082] Among them, the lead seal connection part 17 is arranged on the wall surface of the shell 1 facing the cover plate 2, and is located near the first hand groove 13. The through hole 25 is arranged at a position of the cover plate 2 close to the second hand groove 23. When the cover plate 2 is in the closed position, the lead seal connection part 17 is correspondingly penetrated in the through hole 25, which is convenient for locking the cover plate 2 from the side of the cover plate 2 away from the shell 1.

[0083] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A motor circuit breaker, characterized in that: include: The housing comprises a first rotating connection portion and a first connection portion; The cover plate includes a second rotating connection portion and a second connection portion; The first rotating connection part is rotatably connected to the second rotating connection part, and when the cover plate is closed, the first connection part and the second connection part can be connected; The shell and / or the cover plate are provided with a hand latch groove, and the hand latch groove is located on a side of the cover plate away from the second rotating connection portion.

2. The motor circuit breaker according to claim 1, characterized in that The shell is provided with a first hand-grip groove, which is provided on a wall surface of the shell close to the cover plate and is located at a side away from the first rotating connection part, and a side of the cover plate away from the second rotating connection part can cover a part of the first hand-grip groove; And / or, a second hand latch groove is provided on the cover plate, and the second hand latch groove is provided on the wall surface of the cover plate close to the shell and is located on the side of the cover plate away from the second rotating connection part.

3. The motor circuit breaker according to claim 2, characterized in that The notch of the first hand buckle groove is opposite to the notch of the second hand buckle groove, and the size of the first hand buckle groove is adapted to the size of the second hand buckle groove.

4. The motor circuit breaker according to claim 1, characterized in that The first rotating connection part includes a rotating shaft arranged on the shell, and the second rotating connection part includes a buckle arranged on the cover plate, and the buckle is rotatably connected to the rotating shaft.

5. The motor circuit breaker according to claim 4, characterized in that The buckle has a notch, and the rotating shaft can enter the buckle through the notch. In a direction perpendicular to the cover plate, the cross-section of the buckle is C-shaped.

6. The motor circuit breaker according to claim 4, characterized in that The shell is provided with a mounting groove, the rotating shaft is arranged in the mounting groove, the cover plate is provided with an extension portion, the buckle is arranged on the wall surface of the extension portion close to the shell, the mounting groove is adapted to the extension portion, an avoidance hole is provided in the mounting groove, the buckle is connected to the rotating shaft and is partially located in the avoidance hole.

7. The motor circuit breaker according to claim 6, characterized in that Two avoidance holes are arranged at intervals in the installation groove, and two buckles are arranged at intervals on the extension part. The two buckles are rotatably connected to the rotating shaft at the same time, and the two buckles correspond to the two avoidance holes.

8. The motor circuit breaker according to claim 6, characterized in that A limiting platform is arranged on the wall surface of the shell close to the cover plate, and the limiting platform is located close to the mounting groove. When the cover plate is rotated to open, the side wall of the cover plate where the extension part is arranged can abut against the limiting platform.

9. The motor circuit breaker according to claim 1, characterized in that The first connection portion includes a hanging hole arranged on the shell, and the second connection portion includes a hook arranged on the cover plate. When the cover plate is closed, the hook is hung to the hanging hole.

10. The motor circuit breaker according to claim 1, characterized in that A lead seal connection portion is arranged on a wall surface of the shell body close to the cover plate, and a through hole is arranged on the cover plate, and the lead seal connection portion can partially pass through the through hole.

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