Protective cover, circuit breaker assembly and storage equipment

Abstract

The invention discloses a protective cover, a circuit breaker assembly and storage equipment, and belongs to the field of circuit breakers. The protection cover is applied to the circuit breaker, and the circuit breaker is used for being electrically connected with a wire harness. The protective cover forms an accommodating cavity for accommodating at least one part of the circuit breaker, the protective cover is provided with a threading groove for threading, and the width of the threading groove is smaller than the outer diameter of the wire harness. The protection cover is arranged on the outer side of the circuit breaker, the protection cover is provided with the wire penetrating groove with the width smaller than the outer diameter of the wire harness, the protection cover covers at least one part of the circuit breaker, the end of the wire harness is fastened by the fastening screw on the circuit breaker, the rear part of the end of the wire harness is clamped and fixed by the wire penetrating groove, and even if the wire harness on the circuit breaker falls off, the wire harness cannot be damaged. Due to the restraining effect of the threading groove of the protective cover, the end of the wiring harness cannot be separated from the threading groove, the electrified wiring harness cannot make contact with the cabin, the risk of electric leakage and electric conduction is reduced, and safety is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of circuit breakers, and particularly relates to a protective cover, a circuit breaker assembly and a storage device. BACKGROUND

[0002] A circuit breaker is a mechanical switching device, which can close, carry and break the current under normal circuit conditions, and can carry a specified overcurrent within a specified time, and can close and break the current under abnormal circuit conditions (such as various short circuit conditions). In a commercial refrigerator, the circuit breaker is first clamped on a metal guide rail, and then the metal guide rail is fixed to the press machine bottom plate through screws, so as to realize the installation and fixation of the circuit breaker. Before the commercial refrigerator is shipped, it is necessary to ensure the normal connection of the wire harness and the circuit breaker. First, the wire harness is inserted into the wire slot of the circuit breaker, and then the fastening screw above the circuit breaker is screwed, so as to realize the tight connection of the wire harness and the circuit breaker.

[0003] However, the above wiring method has the risk of wire harness falling off, and the commercial refrigerator cabinet shell, the press machine bottom plate, the engine room cover and the engine room side plate in the related art are all made of aluminum alloy material. Therefore, whether the circuit breaker is installed at any position of the engine room, the wire harness falling off will fall on the metal conductor, which has the risk of electric leakage conduction, and needs to be improved. SUMMARY

[0004] The application aims to at least solve one of the technical problems existing in the prior art. To this end, the application provides a protective cover, a circuit breaker assembly and a storage device, which can reduce the risk of electric leakage conduction of the circuit breaker and improve safety.

[0005] In a first aspect, the application provides a protective cover applied to a circuit breaker, the circuit breaker being used to be electrically connected with a wire harness; the protective cover forms an accommodation cavity for accommodating at least a part of the circuit breaker, and is provided with a threading slot for threading; and the width of the threading slot is smaller than the outer diameter of the wire harness.

[0006] According to the protective cover of the application, the protective cover is arranged on the outside of the circuit breaker, the protective cover is provided with a threading slot with a width smaller than the outer diameter of the wire harness, the protective cover covers at least a part of the circuit breaker, the end of the wire harness is fastened by the fastening screw on the circuit breaker, and the rear part of the end of the wire harness is clamped and fixed by the threading slot. Even if the wire harness on the circuit breaker falls off, the end of the wire harness cannot be separated from the threading slot due to the constraint of the threading slot of the protective cover, the live wire harness cannot contact the engine room, the risk of electric leakage conduction is reduced, and safety is improved.

[0007] According to one embodiment of the application, the protective cover has an open end, the protective cover is adapted to cover the circuit breaker from the open end, the threading slot is arranged on the side surface adjacent to the open end, and the threading slot is in communication with the open end.

[0008] According to one embodiment of the present application, the side wall of the threading groove is provided with at least one limiting protrusion.

[0009] In the embodiment, the width of the threading groove can be shortened by arranging the limiting protrusion, and the limiting protrusion can limit the up-and-down movement of the wiring harness along the extension direction of the threading groove.

[0010] According to one embodiment of the present application, the side wall of the threading groove is provided with a plurality of groups of limiting protrusions distributed along the normal line of the open end, each group comprising at least one limiting protrusion, and the plurality of groups of limiting protrusions divide the threading groove into a plurality of threading hole positions.

[0011] In the embodiment, the vertical arrangement of the threading hole positions can be compatible with different specifications of circuit breakers due to different fixed positions of the wiring harnesses of different circuit breakers.

[0012] According to one embodiment of the present application, one end of the threading groove connected with the open end has a flared section.

[0013] In the embodiment, the wiring harness can smoothly enter the threading groove from the flared end, and the assembly of the wiring harness and the threading groove is facilitated by arranging the flared section.

[0014] According to one embodiment of the present application, the side wall of the flared section is arc-shaped.

[0015] In the embodiment, the movement of the wiring harness can be guided by arranging the side wall of the flared section to be arc-shaped, thereby further facilitating the assembly of the wiring harness and the threading groove.

[0016] According to one embodiment of the present application, the side surface of the protective cover adjacent to the open end and the side surface provided with the threading groove is provided with a heat dissipation hole.

[0017] In the embodiment, the heat dissipation hole can reduce the risk of danger of the circuit breaker due to insufficient heat dissipation in addition to meeting the basic protection function of the protective cover.

[0018] According to one embodiment of the present application, the side surface of the protective cover adjacent to the open end and the side surface provided with the threading groove is provided with a notch at the end adjacent to the open end.

[0019] In the embodiment, the deformation amount of the side surface can be increased by arranging the notch in the side surface, and the deformation amount of the side surface can be used to adapt to different specifications of circuit breakers when the width of the circuit breaker is slightly larger than the inner diameter of the protective cover, and the weight of the protective cover can be reduced to achieve lightweight.

[0020] According to one embodiment of the present application, the circuit breaker is provided with a fastener for fastening the wire harness, and the top surface of the protective cover opposite to the open end is adapted to cover the fastener.

[0021] In the present embodiment, the upper cover of the protective cover of the present application can fully cover the area of the fastener, has a large protection area, and can effectively reduce the risk of accidental human touch; and since the protective cover is integrally arranged outside the circuit breaker, the connection is reliable and simple to process; at the same time, since the protective cover has a large protection area, the contact between water and the fastener can be reduced to a certain extent, and the risk of electric connection is reduced.

[0022] According to one embodiment of the present application, the top surface of the protective cover opposite to the open end is provided with an avoiding hole for the circuit breaker to pass through.

[0023] In the present embodiment, by arranging the avoiding hole, the protruding part of the circuit breaker can pass through the avoiding hole and extend out of the protective cover, so that the area of the top surface of the protective cover outside the avoiding hole can be closely attached to the area of the fastener, thereby protecting the fastener and improving safety.

[0024] According to one embodiment of the present application, the length of the accommodating cavity in the direction of the side surface where the wire passing groove is arranged is greater than the length of the circuit breaker in the same direction.

[0025] In the present embodiment, in order to be compatible with circuit breakers of different specifications, the length of the accommodating cavity in the direction of the side surface where the wire passing groove is arranged should be greater than the length of the circuit breaker in the same direction, so as to reduce the risk that the circuit breaker will be hindered or damaged during installation and improve the application scenarios.

[0026] In a second aspect, the present application provides a circuit breaker assembly, which comprises: a circuit breaker and the protective cover of any one of the above embodiments, and at least a part of the circuit breaker is arranged in the accommodating cavity formed by the protective cover.

[0027] According to the circuit breaker assembly of the present application, by arranging the protective cover outside the circuit breaker, the protective cover is provided with a wire passing groove with a width smaller than the outer diameter of the wire harness, the protective cover covers at least a part of the circuit breaker, the end of the wire harness is fastened by the fastening screw on the circuit breaker, and the rear part of the end of the wire harness is clamped and fixed by the wire passing groove. Even if the wire harness on the circuit breaker falls off, the end of the wire harness will not be separated from the wire passing groove due to the constraint of the wire passing groove of the protective cover, the live wire harness cannot contact the cabin, the risk of electric leakage is reduced, and safety is improved.

[0028] In a third aspect, the present application provides a storage device, which comprises: an inner container, an outer shell and a circuit breaker assembly; the inner container forms a storage chamber; the inner container is located in the outer shell, and the outer shell forms a cabin; and the circuit breaker assembly is arranged in the cabin.

[0029] According to the storage device of the present application, by arranging the protective cover outside the circuit breaker, the protective cover is arranged with a threading groove with a width smaller than the outer diameter of the wire harness, the protective cover covers at least part of the circuit breaker, the end of the wire harness is fastened by the fastening screw on the circuit breaker, and the rear part of the wire harness end is clamped and fixed by the threading groove. Even if the wire harness on the circuit breaker falls off, due to the constraint of the threading groove of the protective cover, the end of the wire harness cannot be separated from the threading groove, the live wire harness cannot contact the cabin, the risk of electric leakage conduction is reduced, and the safety is improved.

[0030] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0032] Figure 1 is one of the structural schematic diagrams of the storage device provided by the embodiments of the present application;

[0033] Figure 2 is another structural schematic diagram of the storage device provided by the embodiments of the present application;

[0034] Figure 3 is one of the structural schematic diagrams of the protective cover provided by the embodiments of the present application;

[0035] Figure 4 is a side view of the protective cover provided by the embodiments of the present application;

[0036] Figure 5 is another structural schematic diagram of the protective cover provided by the embodiments of the present application;

[0037] Figure 6 is a front view of the protective cover provided by the embodiments of the present application;

[0038] Figure 7 is a top view of the protective cover provided by the embodiments of the present application;

[0039] Figure 8 is a structural schematic diagram of the circuit breaker provided by the embodiments of the present application.

[0040] LIST OF REFERENCE NUMERALS:

[0041] circuit breaker assembly 1, circuit breaker 11, fastener 111, wire harness 12;

[0042] protective cover 13, threading groove 131, limiting protrusion 1311, threading hole 1312, flared section 1313, open end 132, heat dissipation hole 133, notch 134, avoiding hole 135;

[0043] Box 2, guide rail 21. Detailed Implementation

[0044] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0045] The following is for reference. Figures 1-8 The present application describes a protective cover 13, a circuit breaker assembly 1, and a storage device according to embodiments thereof.

[0046] The storage device in this embodiment can be understood as a refrigeration storage device in a broad sense, including but not limited to refrigerators, freezers, commercial freezers, display cases, beverage cabinets, wine cabinets, refrigerated display cases, and refrigerated vending machines. The storage devices have diverse structural forms and a wide range of applications.

[0047] The storage equipment includes a box and a door. The box includes an outer shell, an inner liner, and an insulation layer located between the outer shell and the inner liner. The outer shell covers the inner liner and provides protection. The insulation layer can be a foam layer, which provides insulation and cushioning. The space between the outer shell and the inner liner forms a compartment for housing machines such as compressors and circuit breakers.

[0048] A circuit breaker is a mechanical switching device that can close, carry, and interrupt current under normal circuit conditions; it can carry a specified overcurrent for a specified time; and it can close and interrupt current under abnormal circuit conditions (such as various short-circuit conditions).

[0049] like Figure 2 and Figure 3 As shown, the protective cover 13 provided in this application embodiment is applied to the circuit breaker 11, the circuit breaker 11 is used to electrically connect with the wire harness 12, the protective cover 13 forms a receiving cavity for accommodating at least a portion of the circuit breaker 11, and the protective cover 13 is provided with a wire-passing groove 131 for threading wires, the width of the wire-passing groove 131 being smaller than the outer diameter of the wire harness 12.

[0050] The protective cover 13 can cover at least a part of the circuit breaker 11, which can not only provide a certain degree of protection for the circuit breaker 11, but also connect the protective cover 13 to the circuit breaker 11 so that the protective cover 13 can move with the circuit breaker 11, which is more flexible and has less impact on the applicable application scenarios of the circuit breaker 11. Compared with the protective device that places the circuit breaker 11 in the protective cabinet, the cabinet is larger in size because it needs to house other electronic devices. The circuit breaker 11 can only achieve protection and limit the wire harness 12 when placed in the cabinet. The cabinet has poor flexibility and greatly limits the application scenarios of the circuit breaker 11, and cannot achieve protection for the circuit breaker 11 in a variety of scenarios.

[0051] The protective cover 13 is provided with a wire-passing groove 131 for threading wires. The wire-passing groove 131 is a through groove and can be elongated or round. The width of the wire-passing groove 131 is smaller than the outer diameter of the wire harness 12. The side wall of the wire-passing groove 131 squeezes and clamps the rubber of the wire harness 12. The rubber is elastic, which allows the wire harness 12 to be smoothly inserted into the wire-passing groove 131 and the wire harness 12 and the wire-passing groove 131 to form an interference fit. This can provide secondary constraint on the wire harness 12 and play a role in fixing and guiding the wire harness 12. For the wire harness 12 used with the circuit breaker 11, the outer diameter of the connector part of the wire harness 12 is much larger than the outer diameter of other areas of the wire harness 12. Therefore, when the wire harness 12 is stuck in the wire-passing groove 131, it cannot be taken out from the outside of the protective cover 13. Therefore, the lateral movement of the wire harness 12 along the axial direction is limited, which effectively reduces the displacement and detachment of the wire harness 12.

[0052] During installation, the wire harness 12 can be passed through the cable tray 131 first, and then the protective cover 13 can be placed over the circuit breaker 11. After the cover is placed, the wire harness 12 can be connected to the circuit breaker 11. Alternatively, the wire harness 12 can be connected to the circuit breaker 11 first, and then the protective cover 13 can be placed over the circuit breaker 11. After the cover is placed, the wire harness 12 can be snapped into the cable tray 131.

[0053] The wire duct 131 can be installed on the side of the protective cover 13 facing the wiring side of the circuit breaker 11, or on the top surface or other surfaces of the protective cover 13, all of which can achieve the constraint effect on the wire harness 12.

[0054] In related technologies, such as Figure 1 and Figure 2As shown, in a commercial freezer, the circuit breaker 11 is first clamped onto the sheet metal guide rail 21, and then the sheet metal guide rail 21 is fixed to the press base plate with screws, thus realizing the installation and fixation of the circuit breaker 11. Before the commercial freezer leaves the factory, it is necessary to ensure that the wiring harness 12 and the circuit breaker 11 are properly connected. First, the wiring harness 12 needs to be inserted into the wire groove of the circuit breaker 11. Then, by tightening the fastening screws on the top of the circuit breaker 11, the live wiring harness 12 is fixed in the hole groove on the side of the circuit breaker 11. The connector of the wiring harness 12 is a flat-headed iron plate, and the wiring harness 12 is constrained by increasing the friction force by the squeezing of the fastening screws. If the screws of some circuit breakers 11 are not tightened enough, or if there is vibration during use, there is a risk that the wiring harness 12 will fall off. The risk of the wiring harness 12 falling off will increase, especially if the worker does not tighten the fastening screws properly. Furthermore, the commercial freezer shell, compressor base plate, cabin cover, and cabin side plate in the relevant technology are all made of aluminum alloy. Therefore, no matter where the circuit breaker 11 is installed in the cabin, if the wire harness 12 falls off and lands on a metal conductor, there is a risk of leakage and conduction, which may cause the entire commercial freezer to become electrified, resulting in greater risks for operation and maintenance, and personnel may also be in danger when using the commercial freezer.

[0055] According to the protective cover 13 provided in the embodiments of this application, by providing a protective cover 13 on the outside of the circuit breaker 11, the protective cover 13 is provided with a wire-passing groove 131 with a width smaller than the outer diameter of the wire harness 12. The protective cover 13 covers at least a part of the circuit breaker 11. The end of the wire harness 12 is fastened by the fastening screw on the circuit breaker 11, and the rear part of the end of the wire harness 12 is clamped and fixed by the wire-passing groove 131. Even if the wire harness 12 on the circuit breaker 11 falls off, due to the constraint of the wire-passing groove 131 of the protective cover 13, the end of the wire harness 12 will not separate from the wire-passing groove 131, and the live wire harness 12 cannot contact the cabin, reducing the risk of leakage and improving safety.

[0056] In some embodiments, the protective cover 13 is made of insulating material. For example, the protective cover 13 can be a plastic shell, a rubber shell, a glass shell, a ceramic shell, or a metal shell coated with insulating varnish.

[0057] In some embodiments, such as Figure 3 As shown, the wiring trough 131 can be installed on the opposite side of the protective cover 13 to constrain the wire harnesses 12 on both sides of the circuit breaker 11 and increase the reliability of the equipment.

[0058] In some embodiments, the wire troughs 131 can be symmetrically arranged on opposite sides of the protective cover 13. The opposite sides of the protective cover 13 with the wire troughs 131 are respectively located on both sides of the wiring side of the circuit breaker 11, so as to further constrain the wire harnesses 12 on both sides of the circuit breaker 11 and increase the reliability of the equipment.

[0059] In some embodiments, the wire channel 131 is provided with a chamfer to provide a certain degree of protection for the wire harness 12 and reduce damage to the wire harness 12.

[0060] In some embodiments, such as Figure 3 As shown, the protective cover 13 has an open end 132, and the protective cover 13 is adapted to cover the circuit breaker 11 from the open end 132. The wire groove 131 is provided on the side adjacent to the open end 132, and the wire groove 131 is connected to the open end 132.

[0061] In this embodiment, the end of the wire harness 12 is securely connected to the circuit breaker 11. The protective cover 13 can be close to the circuit breaker 11 to cover the circuit breaker 11 from the open end 132. Since the wire groove 131 is provided on the side adjacent to the open end 132 and the wire groove 131 communicates with the open end 132, the wire harness 12 can pass through the wire groove 131 from the open end 132 part that communicates with the open end 132, which facilitates the assembly of the protective cover 13 and the circuit breaker 11, and also facilitates the assembly of the wire groove 131 and the wire harness 12.

[0062] In some embodiments, such as Figure 4 and Figure 5 As shown, the side wall of the wire threading groove 131 is provided with at least one limiting protrusion 1311. The limiting protrusion 1311 protrudes toward the opposite side wall of the wire threading groove 131 to shorten the width of the wire threading groove 131. Due to the function of the limiting protrusion 1311, the wire harness 12 moves up and down along the extension direction of the wire threading groove 131 and plays a good limiting role.

[0063] The limiting protrusion 1311 can be a semi-circular protrusion or a trapezoidal protrusion.

[0064] For example, multiple limiting protrusions 1311 can be provided along the normal direction of the open end 132 to accommodate circuit breakers 11 with different wiring positions and increase the number of usage scenarios.

[0065] For example, along the width direction of the wire threading groove 131, the opposite sidewalls of the wire threading groove 131 can be provided with limiting protrusions 1311, that is, the limiting protrusions 1311 are provided in pairs; along the width direction of the wire threading groove 131, one of the opposite sidewalls of the wire threading groove 131 can be provided with a limiting protrusion 1311, which can all achieve the effect of shortening the width of the wire threading groove 131 to limit the up and down movement of the wire harness 12 along the extension direction of the wire threading groove 131.

[0066] In some embodiments, such as Figure 4 and Figure 5As shown, the side wall of the wire trough 131 is provided with multiple sets of limiting protrusions 1311 spaced apart along the normal of the open end 132. Each set includes at least one limiting protrusion 1311. The multiple sets of limiting protrusions 1311 divide the wire trough 131 into multiple wire hole positions 1312. The multiple vertically arranged wire hole positions 1312 can be compatible with circuit breakers 11 of different specifications.

[0067] Among them, multiple sets of limiting protrusions 1311 are spaced apart along the extension direction of the wire passage 131. During the assembly of the protective cover 13 and the circuit breaker 11, the wire harness 12 can enter the wire passage 131 from the open end of the wire passage 131 and pass through the multiple sets of vertically arranged limiting protrusions 1311 in sequence to enter the appropriate wire passage hole 1312.

[0068] Each set of limiting protrusions 1311 may include one limiting protrusion 1311 that is arranged opposite to each other, or it may be a single limiting protrusion 1311.

[0069] It is understandable that, since the fixing positions of the wiring harness 12 of different circuit breakers 11 are different, the vertical design of a row of wire holes 1312 can be compatible with circuit breakers 11 of different specifications.

[0070] In some embodiments, such as Figure 4 and Figure 5 As shown, the sidewall of the wire-passing groove 131 can be provided with multiple semi-circular grooves. The multiple semi-circles are provided one-to-one with multiple wire-passing hole positions 1312 to form multiple circular wire-passing holes. The circular wire-passing holes are similar in shape to the wire harness 12, which not only limit the wire harness 12, but also reduce stress concentration and reduce damage to the wire harness 12.

[0071] In some embodiments, such as Figure 4 and Figure 5 As shown, on the same side wall of the wire groove 131, a semi-circular groove and a limiting protrusion 1311 are alternately arranged. The semi-circular groove and the limiting protrusion 1311 cooperate to further limit the wire harness 12.

[0072] In some embodiments, such as Figure 4 and Figure 5 As shown, the limiting protrusion 1311 is provided with a guide surface. The guide surface forms an obtuse angle with the side wall of the wire-passing groove 131 where the limiting protrusion 1311 is located. The guide surface is inclined so that the wire harness 12 can smoothly enter the appropriate wire-passing hole 1312 by passing through multiple sets of vertically arranged limiting protrusions 1311 in sequence, while also constraining the wire harness 12.

[0073] In some embodiments, the limiting protrusion 1311 is provided with guide surfaces on opposite sides of the normal of the open end 132 to facilitate the insertion and removal of the wire harness 12, while also constraining the wire harness 12.

[0074] In some embodiments, such as Figure 4 and Figure 5 As shown, the end of the wire trough 131 connected to the open end 132 has a flared section 1313. The width of the flared section 1313 decreases monotonically from near the open end 132 to away from the open end 132. The wire harness 12 can smoothly enter the wire trough 131 from the flared end, which facilitates the assembly of the wire harness 12 with the wire trough 131.

[0075] In some embodiments, such as Figure 4 and Figure 5 As shown, the sidewall of the flared section 1313 is arc-shaped. The arc shape can guide the movement of the wire harness 12, thereby further facilitating the assembly of the wire harness 12 with the wire groove 131.

[0076] The flared section 1313 has oppositely arranged sidewalls, and both oppositely arranged sidewalls can be arc-shaped.

[0077] In some embodiments, such as Figure 3 and Figure 6 As shown, the protective cover 13 has heat dissipation holes 133 on the side adjacent to the open end 132 and the side with the wire groove 131.

[0078] The heat dissipation holes 133 can be provided only on the open end 132 and the side adjacent to the side with the wire groove 131, or they can be provided on the side with the wire groove 131 and other side walls. In order to not only meet the basic protection function of the protective cover 13, the risk of the circuit breaker 11 being dangerous due to insufficient heat dissipation can also be reduced.

[0079] The heat dissipation holes 133 are made as large as possible to increase the heat dissipation effect.

[0080] In some embodiments, such as Figure 3 and Figure 6 As shown, the heat dissipation hole 133 is provided on the side adjacent to the open end 132 and the side with the wire groove 131. The side with the heat dissipation hole 133 is opposite to the side of the circuit breaker 11 that is not connected to the wire harness 12.

[0081] It should be noted that during normal operation, the main heat-generating part of the circuit breaker 11 is on its side. By placing the heat dissipation hole 133 on the side of the circuit breaker 11, the heat dissipation effect of the circuit breaker 11 can be achieved, reducing the risk of the circuit breaker 11 malfunctioning, failing or even catching fire. At the same time, the weight of the protective cover 13 can be reduced, thus reducing costs and achieving lightweight design.

[0082] For example, the heat dissipation hole 133 can be multiple through holes, and the shape of the through holes can be circular, oblong, or other shapes, all of which can achieve the heat dissipation effect.

[0083] In some embodiments, such as Figure 3 and Figure 6 As shown, the protective cover 13 has a notch 134 on the side adjacent to the open end 132 and the side with the wire groove 131.

[0084] The notch 134 is located on the protective cover 13, adjacent to the open end 132 and the side with the wire groove 131, and the open section of the notch 134 is connected to the open end 132.

[0085] Because the side has a notch 134, the deformation of the side can be increased. When the width of the circuit breaker 11 is slightly larger than the inner diameter of the protective cover 13, the deformation of the side can be used to adapt to different specifications of circuit breakers 11, and the weight of the protective cover 13 can be reduced to achieve lightweighting.

[0086] In some embodiments, such as Figure 8 As shown, the circuit breaker 11 is provided with fasteners 111 for securing the wiring harness 12, and the top surface of the protective cover 13 opposite to the open end 132 is adapted to cover the fasteners 111.

[0087] The top surface of the protective cover 13 has a larger area than the fastener 111, so as to fully cover the area of ​​the fastener 111. The fastener 111 can be a fastening screw or fastening bolt, etc.

[0088] Because fasteners such as screws 111 maintain electrical connection during the tightening of wiring harness 12, they themselves become energized when the circuit breaker 11 is powered on. However, these screws on top of the circuit breaker 11 lack any protective devices and are directly exposed to the external environment. During commercial refrigerator maintenance, accidental contact with these screws could result in electric shock. Furthermore, the operating environment of commercial refrigerators is highly unpredictable. If the refrigerator is placed in high-humidity conditions or if water enters the compressor compartment, the circuit breaker 11, being directly exposed to the environment, may become waterlogged, thus reducing its lifespan.

[0089] In related technologies, a cover structure has emerged that only covers the fastening screws. Although it can also cover the fastening screws, this structure needs to be installed on the circuit breaker 11 or the structure connected to the fastening screws. The structure is complex, difficult to process, and its small size makes it easy to separate from the circuit breaker 11, resulting in poor reliability.

[0090] In this embodiment, the protective cover 13 covers the fastener 111 to prevent the fastener 111 from being exposed to the environment, which can reduce the accidental contact between the human body and the fastener 111, reduce the entry of moisture, and reduce the risk of electric shock.

[0091] The protective cover 13 of this application can fully cover the area of ​​the fastener 111, providing a large protective area and effectively reducing the risk of accidental contact by the human body. Furthermore, since the protective cover 13 is installed on the outside of the circuit breaker 11, the connection reliability is strong and the processing is simple. At the same time, due to the large protective area of ​​the protective cover 13, the contact between water and the fastener 111 can be reduced to a certain extent, thus reducing the risk of short circuit.

[0092] In some embodiments, such as Figure 3 and Figure 7 As shown, the top surface of the protective cover 13 opposite to the open end 132 is provided with a clearance hole 135. The clearance hole 135 is used for a part of the circuit breaker 11 to pass through. The switch of the circuit breaker 11 can be set in the part of the circuit breaker 11 located outside the protective cover 13, so as to facilitate the opening and closing of the circuit breaker 11.

[0093] By providing a clearance hole 135, the protruding part of the circuit breaker 11 can extend out of the protective cover 13 through the clearance hole 135, so that the area of ​​the top surface of the protective cover 13 outside the clearance hole 135 can be in close contact with the area of ​​the fastener 111, thereby providing protection for the fastener 111 and improving safety.

[0094] In some embodiments, the length of the receiving cavity in the direction of the side with the wire groove 131 is greater than the length of the circuit breaker 11 in the same direction.

[0095] In this embodiment, in order to be compatible with circuit breakers 11 of different specifications, the length of the receiving cavity in the direction of the side with the wire groove 131 should be greater than the length of the circuit breaker 11 in the same direction, so as to reduce the risk of the circuit breaker 11 being obstructed or damaged during installation and improve the application scenarios.

[0096] like Figure 2 As shown, this application embodiment also provides a circuit breaker assembly 1, including: a circuit breaker 11 and a protective cover 13 as described in any of the above embodiments, wherein at least a portion of the circuit breaker 11 is disposed within a receiving cavity formed by the protective cover 13.

[0097] According to the circuit breaker assembly 1 provided in the embodiments of this application, a protective cover 13 is provided on the outside of the circuit breaker 11. The protective cover 13 is provided with a wire-passing groove 131 with a width smaller than the outer diameter of the wire harness 12. The protective cover 13 covers at least a part of the circuit breaker 11. The end of the wire harness 12 is fastened by the fastening screw on the circuit breaker 11. The rear part of the end of the wire harness 12 is clamped and fixed by the wire-passing groove 131. Even if the wire harness 12 on the circuit breaker 11 falls off, the end of the wire harness 12 will not separate from the wire-passing groove 131 due to the constraint of the wire-passing groove 131 of the protective cover 13. The live wire harness 12 cannot come into contact with the cabin, reducing the risk of leakage current conduction and improving safety.

[0098] This application also provides a storage device, including: an inner liner, an outer shell, and a circuit breaker assembly 1 as described in the above embodiments; the inner liner forms a storage compartment; the inner liner is located inside the outer shell, and the outer shell forms a cabin; the circuit breaker assembly 1 is disposed in the cabin.

[0099] The storage equipment includes a box 2 and a door. The box 2 includes an outer shell, an inner liner, and an insulation layer located between the outer shell and the inner liner. The outer shell covers the inner liner and provides protection. The insulation layer can be a foam layer, which provides insulation and cushioning. A machine compartment is formed between the outer shell and the inner liner, which is used to house machines such as compressors and circuit breakers 11.

[0100] According to the storage device provided in the embodiments of this application, a protective cover 13 is provided on the outside of the circuit breaker 11. The protective cover 13 is provided with a wire-passing groove 131 with a width smaller than the outer diameter of the wire harness 12. The protective cover 13 covers at least a part of the circuit breaker 11. The end of the wire harness 12 is fastened by the fastening screw on the circuit breaker 11. The rear part of the end of the wire harness 12 is clamped and fixed by the wire-passing groove 131. Even if the wire harness 12 on the circuit breaker 11 falls off, the end of the wire harness 12 will not separate from the wire-passing groove 131 due to the constraint of the wire-passing groove 131 of the protective cover 13. The live wire harness 12 cannot come into contact with the cabin, reducing the risk of leakage and improving safety.

[0101] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0102] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0103] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0104] In the description of this application, "multiple" means two or more.

[0105] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0106] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0107] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0108] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A protective cover, characterized in that, The device is applied to a circuit breaker for electrical connection with a wire harness; the protective cover forms a receiving cavity for accommodating at least a portion of the circuit breaker, and the protective cover is provided with a wire-passing groove for threading wires, the width of which is smaller than the outer diameter of the wire harness.

2. The protective cover according to claim 1, characterized in that, The protective cover has an open end, the protective cover is adapted to cover the circuit breaker from the open end, the wire groove is provided on the side adjacent to the open end, and the wire groove is in communication with the open end.

3. The protective cover according to claim 2, characterized in that, The sidewall of the threading groove is provided with at least one limiting protrusion.

4. The protective cover according to claim 3, characterized in that, The sidewall of the threading groove is provided with multiple sets of limiting protrusions spaced apart along the normal of the open end. Each set includes at least one limiting protrusion, and the multiple sets of limiting protrusions divide the threading groove into multiple threading holes.

5. The protective cover according to claim 2, characterized in that, The end of the threading groove connected to the open end has a flared section.

6. The protective cover according to claim 5, characterized in that, The sidewall of the flared section is arc-shaped.

7. The protective cover according to claim 2, characterized in that, The protective cover has heat dissipation holes on the side adjacent to the open end and the side with the threading groove.

8. The protective cover according to claim 2, characterized in that, The protective cover has a notch at the end adjacent to the open end and the side with the threading groove.

9. The protective cover according to claim 2, characterized in that, The circuit breaker is provided with fasteners for securing the wiring harness, and the top surface of the protective cover opposite the open end is adapted to cover the fasteners.

10. The protective cover according to claim 9, characterized in that, The top surface of the protective cover opposite the open end is provided with a clearance hole, which is used for a portion of the circuit breaker to pass through.

11. The protective cover according to any one of claims 1-10, characterized in that, The length of the receiving cavity in the direction of the side where the wire groove is located is greater than the length of the circuit breaker in the same direction.

12. A circuit breaker assembly, characterized in that, include: The circuit breaker and the protective cover according to any one of claims 1-11, wherein at least a portion of the circuit breaker is disposed within a receiving cavity formed by the protective cover.

13. A storage device, characterized in that, include: Inner liner, which forms a storage compartment; An outer shell, wherein the inner liner is located within the outer shell, and the outer shell forms a cabin; The circuit breaker assembly of claim 12, wherein the circuit breaker assembly is disposed in the cabin.

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