Automatic change-over switch and dual-power supply system

Abstract

The utility model provides an automatic change-over switch and a dual-power supply system, and belongs to the technical field of electrical equipment. Comprising a shell, a power switching assembly, a handle, a switching button and a connecting rod. The power switching assembly is located in the shell. The handle is installed on the shell and provided with a first lock hole. The switching button is installed on the shell and comprises an automatic gear and a manual gear. When the handle is located at the neutral position, one end of the connecting rod penetrates through the first lock hole so as to lock the handle at the neutral position. The other end of the connecting rod is provided with an abutting portion which abuts against the manual gear so that the handle can be in a manual operation state. The connecting rod is arranged to limit the handle, it can be guaranteed that when the automatic change-over switch is in a power-off state, the automatic change-over switch cannot be powered on again due to the fact that the handle is touched by mistake, the abutting part is arranged on the connecting rod, and the switching button is limited through the abutting part while the handle is locked; and the motor of the automatic change-over switch is protected.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to an automatic transfer switch and a dual power supply system. Background Art

[0002] Automatic transfer switch is a kind of power switch equipment, which is used to switch the power system when the power fails or the power is switched, so as to ensure the continuity and reliability of power supply. Automatic transfer switch is widely used in hospitals, banks, power plants, chemical industry, metallurgy and other occasions.

[0003] Since the automatic transfer switch is mainly used in the emergency power supply system, in order to ensure the safe and reliable operation of the load, maintenance personnel need to regularly or irregularly inspect, maintain and repair the load and electrical equipment, so the automatic transfer switch needs to be able to reliably cut off the power. In addition, since the operating handle of the automatic transfer switch is exposed, once the operating handle is accidentally touched when the automatic transfer switch is powered off, the automatic transfer switch will be powered on again, which will bring the risk of electric shock to the maintenance personnel. Utility Model Content

[0004] The present application provides an automatic transfer switch and a dual power supply system to solve the problem that during the inspection, maintenance and repair of loads and electrical equipment, the operating handle is easily touched by mistake, causing the loads and electrical equipment to be energized, thereby improving the safety during the inspection and maintenance process.

[0005] In a first aspect, the present application provides an automatic transfer switch, comprising: a housing, a power switching assembly, a handle, a transfer button, and a connecting rod. The power switching assembly is located in the housing. The handle is mounted on the housing, and at least part of the handle is exposed outside the housing, and the part of the handle located in the housing is connected to the power switching assembly. When the handle is in a neutral position, the normal power supply end and the backup power supply end of the automatic transfer switch are both disconnected from the load end. The handle is provided with a first lock hole. The transfer button is mounted on the housing, and the transfer button includes an automatic gear and a manual gear.

[0006] When the conversion button is in the automatic gear position, the handle is driven by the motor to drive the power switching component to operate, so that the power switching component controls one of the normal power supply terminal and the backup power supply terminal to be electrically connected to the load terminal. When the conversion button is in the manual gear position, the handle is manually driven to drive the power switching component to operate, so that the power switching component controls one of the normal power supply terminal and the backup power supply terminal to be electrically connected to the load terminal. When the connecting rod is in the neutral position, one end of the connecting rod passes through the first lock hole to lock the handle in the neutral position. The other end of the connecting rod is provided with a pressing portion, which presses against the manual gear position to put the handle in a manual operation state.

[0007] Through the above scheme, when the handle is in the neutral position, one end of the connecting rod passes through the first lock hole, and the other end of the connecting rod is provided with a pressing part, and the pressing part presses the manual gear of the conversion button, so that the connecting rod can not only lock the handle, but also lock the conversion button. In this way, when the maintenance personnel regularly or irregularly inspect, maintain and repair the load and electrical equipment, there will be no problem of accidentally touching the handle and causing the automatic conversion switch to be powered on again, which will bring the risk of electric shock to the maintenance personnel. In addition, the setting of the pressing part can also make the conversion button in the manual gear while the connecting rod locks the handle, ensuring that the motor will not be started due to the conversion button being accidentally touched, thereby protecting the motor of the automatic conversion switch.

[0008] In a possible design, a side of the pressing portion away from the connecting rod is connected to a limiting portion, and the limiting portion is used to contact the first side wall of the shell to limit the movement of the connecting rod.

[0009] Through the above scheme, the connecting rod is limited by the limiting part, which can avoid the problem that the connecting rod slides on the shell during use due to the lack of limitation, thereby affecting the locking of the handle and the conversion button by the connecting rod, thereby ensuring that the connecting rod can better lock the handle and the conversion button.

[0010] In a possible design, the automatic transfer switch further includes a locking rod. One end of the connecting rod for passing through the first locking hole is provided with a through hole, one end of the locking rod passes through the through hole, and the locking rod is used to contact the second side wall of the housing to limit the movement of the connecting rod.

[0011] Through the above scheme, a locking rod is arranged at one end of the connecting rod for passing through the first locking hole, and the connecting rod can be limited in the direction of the connecting rod being pulled out of the locking hole, so that the connecting rod will not move arbitrarily on the shell, reducing the possibility of the connecting rod moving arbitrarily when the handle and the conversion button are locked, ensuring the locking effect of the connecting rod on the handle and the conversion button, and making the locking rod abut against the second side wall of the shell when limiting the connecting rod, so that there is no gap between the locking rod and the second side wall of the shell, thereby further reducing the possibility of movement of the connecting rod, so that the connecting rod can better lock the handle and the conversion button.

[0012] In a possible design, the automatic transfer switch further includes a limit plate, which is detachably connected to one end of the connecting rod for passing through the first lock hole, and the limit plate is used to contact the second side wall of the shell to limit the movement of the connecting rod.

[0013] Through the above scheme, the setting of the limit plate can limit the connecting rod in the direction of pulling the connecting rod out of the lock hole, so that the connecting rod will not move on the shell at will. The limit plate is set to be detachably connected to the connecting rod, so that the connecting rod can be limited without affecting the insertion of the connecting rod into the first lock hole, thereby ensuring that the connecting rod can be used normally.

[0014] In a possible design, an indicator is provided on the outer wall of the shell, and a second lock hole is provided on the indicator. The second lock hole is opposite to the first lock hole, and the second lock hole is connected to the first lock hole, and one end of the connecting rod also passes through the second lock hole.

[0015] Through the above solution, the indicator member arranged on the outer wall of the housing can increase the thickness of the locking part when the connecting rod locks the handle. When the connecting rod locks the handle, the second locking hole is arranged to increase the width of the first locking hole, which solves the problem that the width of the first locking hole is small due to the thin handle, and ensures that the connecting rod will not be too thin in the locking part due to the small width of the first locking hole, thereby causing the connecting rod to shake. The locking effect of the connecting rod on the handle and the conversion button is increased.

[0016] In a possible design, two indicators are provided, one indicator is located on one side of the handle, and the other indicator is located on the other side of the handle. Each indicator is provided with a second lock hole, and one end of the connecting rod passes through a second lock hole, a first lock hole and another second lock hole in sequence.

[0017] Through the above solution, the indicator pieces respectively arranged on both sides of the handle can further increase the thickness of the locking portion when the connecting rod locks the handle, thereby further increasing the stability of the connecting rod locking the handle and the conversion button. The two indicator pieces can also protect the portion of the handle exposed from the housing, reducing the occurrence of the problem that the handle is easily damaged when the automatic conversion switch is bumped, and increasing the service life of the automatic conversion switch.

[0018] In a possible design, the first locking hole and the second locking hole are polygonal holes.

[0019] Through the above solution, the polygonal hole can better limit the position of the connecting rod, so that the connecting rod can better lock the handle and the conversion button. And it can avoid the problem that when the first lock hole and the second lock hole are set as circular holes, the connecting rod rotates in the first lock hole and the second lock hole when locking the handle and the conversion button.

[0020] In a possible design, the handle is provided with an operating hole for inserting a tool.

[0021] The above solution solves the problem that the handle is difficult to rotate. A tool adapted to the operating hole is inserted into the operating hole, and then the handle is rotated, which saves the time of directly adjusting the handle by hand and can quickly adjust the handle to the required gear position.

[0022] In a possible design, the housing is provided with a mounting position, the automatic transfer switch further comprises an operating lever, the operating lever is detachably mounted on the mounting position, and the tool is configured as the operating lever.

[0023] By means of the above solution, the operating rod is arranged on the housing, so that the problem of needing to find a tool temporarily when operating the handle can be avoided, and the time required for adjusting the handle can be saved. In addition, the operating rod can be detachably connected to the mounting position on the housing, so that when the operating rod is damaged, the operating rod can be replaced in time.

[0024] In a second aspect, the present application provides a dual power supply system, comprising: the automatic transfer switch in the above-mentioned first aspect.

[0025] Through the above solution, when the maintenance personnel regularly or irregularly inspect, maintain and repair the load and electrical equipment, the automatic transfer switch can reliably cut off the power, thus avoiding the safety problem of the maintenance personnel being electrocuted due to the handle being accidentally touched and the automatic transfer switch being powered on again.

[0026] The beneficial effects provided in the above-mentioned second aspect and various possible designs of the above-mentioned second aspect can refer to the beneficial effects brought about by the above-mentioned first aspect and various possible implementation methods of the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of an automatic transfer switch in an unlocked state provided in an embodiment of the present application.

[0028] Figure 2 A schematic diagram of the structure of an automatic transfer switch in a locked state provided in an embodiment of the present application.

[0029] Figure 3 An exploded view of an automatic transfer switch provided in an embodiment of the present application.

[0030] Figure 4 A schematic diagram of the structure of a connecting rod provided in an embodiment of the present application.

[0031] Figure 5 A schematic diagram of the structure of a shell provided in an embodiment of the present application.

[0032] Figure 6 A schematic diagram of the structure of a handle provided in an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 100, housing; 110, indicator; 111, second lock hole; 120, operating rod; 130, handle;

[0035] 200, handle; 210, first lock hole; 220, operation hole;

[0036] 300, conversion button; 310, automatic gear position; 320, manual gear position;

[0037] 400, connecting rod; 410, pressing portion; 420, limiting portion; 430, through hole. DETAILED DESCRIPTION

[0038] 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, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0040] The terms "comprising" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover but not exclude other contents. The word "a" or "an" does not exclude the presence of a plurality.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0043] The directional words appearing in the following description are all directions shown in the drawings, and do not limit a specific structure of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present application.

[0044] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0045] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure may refer to a physical connection. For example, the physical connection may be a fixed connection, such as a fixed connection through a fixing member, such as a fixed connection through a screw, bolt or other fixing member; the physical connection may also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection may also be an integral connection, such as welding, bonding or integral molding to form a connection for connection. The "connection" or "connection" of a circuit structure may refer to an electrical connection or a signal connection in addition to a physical connection. For example, it may be a direct connection, that is, a physical connection, or it may be an indirect connection through at least one intermediate element, as long as the circuit is connected, or it may be the internal connection of two elements; the signal connection may refer to a signal connection through a media medium, such as a radio wave, in addition to a signal connection through a circuit. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] In order to enable those skilled in the art to better understand the present application, the automatic transfer switch in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0047] Figure 1 A schematic diagram of the structure of an automatic transfer switch in an unlocked state provided in an embodiment of the present application. Figure 2 A schematic diagram of the structure of an automatic transfer switch in a locked state provided in an embodiment of the present application. Figure 3 An exploded view of an automatic transfer switch provided in an embodiment of the present application.

[0048] The present application provides an automatic transfer switch, such as Figures 1 to 3 As shown, the automatic transfer switch includes a housing 100, a power switching assembly, a handle 200, a transfer button 300 and a connecting rod 400. The power switching assembly is located in the housing 100. The handle 200 is mounted on the housing 100, and at least part of the handle 200 is exposed outside the housing 100, and the part of the handle 200 located in the housing 100 is connected to the power switching assembly. When the handle 200 is in a neutral position, the normal power supply end and the standby power supply end of the automatic transfer switch are both disconnected from the load end. The handle 200 is provided with a first lock hole 210. The transfer button 300 is mounted on the housing 100, and the transfer button 300 includes an automatic gear position 310 and a manual gear position 320.

[0049] When the conversion button 300 is in the automatic gear position 310, the handle 200, driven by the motor, drives the power switching component to operate so that the power switching component controls one of the normal power supply terminal and the backup power supply terminal to be electrically connected to the load terminal. When the conversion button 300 is in the manual gear position 320, the handle 200 is manually driven to drive the power switching component to operate so that the power switching component controls one of the normal power supply terminal and the backup power supply terminal to be electrically connected to the load terminal. When the handle 200 is in the neutral position, one end of the connecting rod 400 passes through the first lock hole 210 to lock the handle 200 in the neutral position. The other end of the connecting rod 400 is provided with a pressing portion 410, which presses against the manual gear position 320 so that the handle 200 is in a manual operation state.

[0050] The power switching component is used to switch the circuit connection state in the dual power supply system. The power switching component includes a gear, a rotating shaft, a normal power contact, and a backup power contact. The gear is linked to the handle 200, and the gear is sleeved on the rotating shaft. The normal power contact and the backup power contact are both linked to the rotating shaft. When the handle 200 rotates, the gear is driven to rotate, and then the gear drives the rotating shaft to rotate. When the rotating shaft rotates in one direction, it can drive the normal power contact to be electrically connected to the normal power end to conduct the normal power end with the load end. When the rotating shaft rotates in the other direction, it can drive the backup power contact to be electrically connected to the backup power end to electrically connect the backup power contact to the backup power end to conduct the backup power end with the load end.

[0051] Generally, the power switching assembly connects the common power supply to the load end. When the power supply fails or a power outage occurs due to other reasons during use, the power switching assembly can be driven by the handle 200 to switch the load end from a state of being connected to the common power supply end to a state of being connected to the standby power supply end in the above manner to ensure that the load end will not be powered off.

[0052] The handle 200 is roughly gear-shaped. The portion of the handle 200 exposed outside the housing 100 is not provided with transmission teeth, and the portion of the handle 200 located inside the housing 100 is provided with transmission teeth to mesh with the gears of the power switching assembly. A first locking hole 210 penetrating the handle 200 is provided on the side of the handle 200 where no transmission teeth are provided, so as to allow the end of the connecting rod 400 to pass through.

[0053] The handle 200 has three corresponding gear positions, and the middle gear position corresponds to the state where the handle 200 is in the neutral position. In this state, the first lock hole 210 is completely located outside the housing 100. When the handle 200 is in the neutral position, the normal power supply terminal and the backup power supply terminal of the automatic transfer switch are disconnected from the load terminal. After the handle 200 rotates one gear position in one direction from the neutral position, the handle 200 controls the normal power supply terminal to be disconnected from the load terminal through the power switching component, and controls the backup power supply terminal to be connected with the load terminal. After the handle 200 rotates one gear position in the other direction from the neutral position, the handle 200 controls the normal power supply terminal to be connected with the load terminal through the power switching component, and controls the backup power supply terminal to be disconnected from the load terminal.

[0054] The conversion button 300 is connected to the motor disposed in the housing 100, and the output shaft of the motor is fixedly connected to the center of the gear of the power switching assembly. Under normal conditions, the power supply is used normally, and the load end is connected to the common power end.

[0055] When the conversion button 300 is in the automatic gear position 310, the motor is powered on. A sensing device is provided in the housing 100. When the sensing device senses that the power supply fails during use or a power outage occurs due to other reasons, the motor drives the gear of the power switching component to rotate, thereby disconnecting the normal power supply end from the load end, and connecting the backup power supply end to the load end, so that the backup power supply supplies power to the load.

[0056] When the conversion button 300 is in the manual gear position 320, the motor is powered off. When the normal power fails or is powered off due to other reasons during use, the handle 200 can be manually rotated by one gear to put the handle 200 in a neutral position, so that the handle 200 controls the normal power end and the load end to be disconnected through the power switching component, and then controls the backup power end and the load end to be connected.

[0057] The connecting rod 400 is used to pass through the first locking hole 210 to limit the handle 200. When the handle 200 is in a neutral position, the first locking hole 210 is located outside the housing 100, and the connecting rod 400 passes through the first locking hole 210 to lock the handle 200. At this time, the handle 200 cannot be rotated, and the automatic transfer switch is in a power-off state.

[0058] When the connecting rod 400 locks the handle 200, the connecting rod 400 can also contact the surface of the shell 100. By using the shell 100 to abut against the connecting rod 400, the locking effect of the connecting rod 400 on the handle 200 can be increased, ensuring that the handle 200 is in a state where it cannot rotate.

[0059] A pressing portion 410 is further provided at one end of the connecting rod 400 . The pressing portion 410 is a protruding structure provided on the side of the connecting rod 400 facing the housing 100 .

[0060] Furthermore, the portion of the pressing portion 410 used to press the manual gear position 320 may also be provided with a chamfer. The size of the chamfer may be set according to the degree of inclination of the conversion button 300 when the conversion button 300 is in the manual gear position 320. The setting of the chamfer facilitates the surface contact between the pressing portion 410 and the inclined conversion button 300, increases the pressing area between the pressing portion 410 and the conversion button 300, makes the pressing portion 410 and the surface of the conversion button 300 fit more closely, and increases the pressing effect of the pressing portion 410 on the conversion button 300.

[0061] In the present application, when the handle 200 is in the neutral position, one end of the connecting rod 400 passes through the first lock hole 210 to limit the handle 200, so that the handle 200 is maintained in the neutral position and cannot rotate. In this way, even if the handle 200 is accidentally touched when the automatic transfer switch is in the power-off state, the handle 200 will not rotate to re-energize the automatic transfer switch, reducing the possibility of electric shock to the maintenance personnel during maintenance and improving the safety of the automatic transfer switch. In addition, a pressing portion 410 is provided on the connecting rod 400, and the pressing portion 410 presses against the manual gear position 320, which can limit the manual gear position 320 of the conversion button 300, ensuring that the conversion button 300 is always in the manual state when the automatic transfer switch is in the power-off state, and will not automatically re-energize the conversion switch when the conversion button 300 is in the automatic gear position 310. In this way, not only the safety of the automatic transfer switch can be improved, but also the problem of the transfer button 300 being accidentally touched and causing the motor to start, thereby damaging the motor, can be avoided when the automatic transfer switch is in a power-off state. This can protect the motor of the automatic transfer switch and increase the service life of the automatic transfer switch.

[0062] In summary, when the handle 200 is in the neutral position, one end of the connecting rod 400 passes through the first lock hole 210, and the other end of the connecting rod 400 is provided with a pressing portion 410, and the pressing portion 410 presses the manual gear position 320 of the conversion button 300, so that the connecting rod 400 can not only lock the handle 200, but also lock the conversion button 300, so that when the maintenance personnel regularly or irregularly inspect, maintain and repair the load and electrical equipment, there will be no problem of accidentally touching the handle 200 and causing the automatic conversion switch to be powered on again, which will bring the risk of electric shock to the maintenance personnel. In addition, the setting of the pressing portion 410 can also make the conversion button 300 in the manual gear position 320 while the connecting rod 400 locks the handle 200, ensuring that the motor will not be started due to the conversion button 300 being accidentally touched, thereby protecting the motor of the automatic conversion switch.

[0063] Figure 4 This is a schematic diagram of the structure of the connecting rod provided in the embodiment of the present application. Figure 2 , Figure 3 as well as Figure 4 As shown, a side of the pressing portion 410 away from the connecting rod 400 is connected to a limiting portion 420 , and the limiting portion 420 is used to contact with the first side wall of the housing 100 to limit the movement of the connecting rod 400 .

[0064] The limiting portion 420 may be a limiting block provided on the side of the pressing portion 410 away from the connecting rod 400. The limiting portion 420 may be integrally formed with the connecting rod 400, or the limiting portion 420 may be separately formed from the connecting rod 400 and then connected by plugging, clamping or screw connection. The limiting portion 420 is used to limit the connecting rod 400 in the direction in which the connecting rod 400 is inserted into the lock hole. When the limiting portion 420 contacts the first side wall of the housing 100, the pressing portion 410 presses against the manual gear position 320 of the conversion button 300, and the position of the connecting rod 400 is fixed.

[0065] Through the above-mentioned arrangement, the limiting portion 420 is used to limit the connecting rod 400, so as to avoid the connecting rod 400 sliding on the shell 100 during use due to the lack of limiting, thereby affecting the locking of the handle 200 and the conversion button 300 by the connecting rod 400, thereby ensuring that the connecting rod 400 can better lock the handle 200 and the conversion button 300.

[0066] Please continue to refer to Figure 2 , Figure 3 as well as Figure 4 In a possible design, the automatic transfer switch further includes a locking rod. One end of the connecting rod 400 for passing through the first locking hole 210 is provided with a through hole 430, one end of the locking rod passes through the through hole 430, and the locking rod is used to contact the second side wall of the housing 100 to limit the movement of the connecting rod 400.

[0067] The locking rod may be cylindrical, triangular prism or quadrangular prism, etc. The through hole 430 may also be cylindrical, triangular prism or quadrangular prism, etc. The shape of the locking rod may be compatible with the shape of the through hole 430, or may not be compatible with the shape of the through hole 430. It is only necessary to ensure that the locking rod can be inserted into the through hole 430 and will not fall out of the through hole 430. When the shape of the locking rod is compatible with the shape of the through hole 430, for example, when the locking rod is cylindrical, the through hole 430 is circular. At this time, the locking rod has the highest degree of compatibility with the through hole 430, and the locking rod has the best limiting effect on the connecting rod 400.

[0068] When the locking rod passes through the through hole 430 to limit the connecting rod 400 , the locking rod abuts against the second side wall of the housing 100 , and the second side wall is opposite to the first side wall.

[0069] In another possible design, the automatic transfer switch further includes a limit plate, which is detachably connected to one end of the connecting rod 400 for passing through the first lock hole 210 , and the limit plate is used to contact the second side wall of the shell 100 to limit the movement of the connecting rod 400 .

[0070] The above only illustrates two ways of limiting the movement of the connecting rod 400, namely, by a locking rod or a limiting plate. In fact, the movement of the connecting rod 400 can also be limited by structures such as a lock. The present application does not limit the limiting method of one end of the connecting rod 400 passing through the first locking hole 210.

[0071] In summary, the present application sets a locking rod or a limiting plate at one end of the connecting rod 400 for passing through the first locking hole 210, so that the connecting rod 400 can be limited in the direction in which the connecting rod 400 is pulled out of the first locking hole 210, so that the connecting rod 400 will not move along the first locking hole 210 at will, and the possibility of the connecting rod 400 sliding at will when locking the handle 200 and the conversion button 300 is reduced, thereby ensuring the locking effect of the connecting rod 400 on the handle 200 and the conversion button 300. In addition, the limiting portion 420 abuts against the second side wall of the housing 100 when limiting the connecting rod 400, so that there is no gap between the locking rod and the second side wall of the housing 100, thereby further reducing the possibility of movement of the connecting rod 400, so that the connecting rod 400 can better lock the handle 200 and the conversion button 300.

[0072] Figure 5 This is a schematic diagram of the structure of the housing provided in the embodiment of the present application. Figure 5 As shown, an indicator 110 is provided on the outer wall of the shell 100, and the indicator 110 is provided with a second locking hole 111. The second locking hole 111 is opposite to the first locking hole 210, and the second locking hole 111 is connected to the first locking hole 210, and one end of the connecting rod 400 also passes through the second locking hole 111.

[0073] The indicating member 110 may be a convex structure provided on the housing 100. The indicating member 110 is semi-cylindrical, and the indicating member 110 is slightly larger than the part of the handle 200 exposed from the housing 100. The indicating member 110 is in sliding contact with the reference plane of the handle 200. The second locking hole 111 is a through hole penetrating the indicating member 110. The size and shape of the second locking hole 111 and the first locking hole 210 may be the same respectively.

[0074] Gear marks may be provided on the indicating member 110. Correspondingly, indicating marks may also be provided on the handle 200. Exemplarily, marks of "0", "丨", and "‖" may be provided on the indicating member 110, where "0" is located between "丨" and "‖". Assuming that the indicating mark on the handle 200 is opposite to "0", it may indicate that the handle 200 is in the neutral position. Assuming that the indicating mark on the handle 200 is opposite to "丨", the common power supply terminal and the load terminal in the automatic transfer switch are conducted. Assuming that the indicating mark on the handle 200 is opposite to "‖", the standby power supply terminal and the load terminal in the automatic transfer switch are conducted.

[0075] Through the above settings, the indicating member 110 provided on the outer wall of the housing 100 can increase the thickness of the locking part when the connecting rod 400 locks the handle 200. When the connecting rod 400 locks the handle 200, the width of the first locking hole 210 is increased by the setting of the second locking hole 111, solving the problem that the width of the first locking hole 210 is small due to the thin handle 200, and ensuring that the connecting rod 400 will not have the problem that the locking part is too thin due to the too small width of the first locking hole 210, resulting in the shaking of the connecting rod 400. The locking effect of the connecting rod 400 on the handle 200 and the conversion button 300 is increased.

[0076] Please continue to refer to Figure 5 As shown, there are two indicating members 110. One indicating member 110 is located on one side of the handle 200, and the other indicating member 110 is located on the other side of the handle 200. Each indicating member 110 is provided with a second locking hole 111. One end of the connecting rod 400 sequentially passes through a second locking hole 111, the first locking hole 210, and the other second locking hole 111.

[0077] Second locking holes 111 are provided on both indicating members 110. The sizes and shapes of the two second locking holes 111 are the same as those of the first locking hole 210. The two indicating members 110 are arranged oppositely, and the part of the handle 200 exposed from the housing 100 is located between the two indicating members 110.

[0078] Through the above configuration, the indicator pieces 110 respectively arranged on both sides of the handle 200 can not only further increase the thickness of the locking portion when the connecting rod 400 locks the handle 200, thereby further increasing the stability of the connecting rod 400 locking the handle 200 and the conversion button 300. The two indicator pieces 110 can also protect the portion of the handle 200 exposed from the housing 100, reduce the occurrence of the problem that the handle 200 is easily damaged when the automatic conversion switch is bumped, and increase the service life of the automatic conversion switch.

[0079] Figure 6 This is a schematic diagram of the structure of the handle provided in the embodiment of the present application. Figure 5 as well as Figure 6 As shown, the first locking hole 210 and the second locking hole 111 are polygonal holes.

[0080] For example, the cross-sectional shapes of the first locking hole 210 and the second locking hole 111 may be rectangular, square, or diamond, etc. The shape of the first locking hole 210 may be the same as the shape of the second locking hole 111 .

[0081] Through the above arrangement, the polygonal hole can better limit the connecting rod 400, so that the connecting rod 400 can better lock the handle 200 and the conversion button 300. In addition, when the first locking hole 210 and the second locking hole 111 are set as circular holes, the connecting rod 400 can be prevented from rotating in the first locking hole 210 and the second locking hole 111 when the handle 200 and the conversion button 300 are locked.

[0082] Please continue to refer to Figure 6 As shown, the handle 200 is provided with an operation hole 220, and the operation hole 220 is used for a tool to be inserted.

[0083] The operation hole 220 may be a blind hole provided in the portion of the handle 200 that is exposed from the housing 100, and the cross-sectional shape of the operation hole 220 may be circular, cross-shaped, or straight-shaped. It should be noted that the operation hole 220 here can not only be used for inserting a tool so that the tool can drive the handle 200 to rotate. The operation hole 220 can also serve as an indicator mark on the aforementioned handle 200 to cooperate with the gear mark on the indicator 110 to indicate the state of the handle 200.

[0084] During the manual adjustment of the handle 200 , a tool adapted to the operating hole 220 is inserted into the operating hole 220 , and the handle 200 can be rotated.

[0085] Through the above arrangement, a tool adapted to the operating hole 220 is inserted into the operating hole 220, and then force is applied to the handle 200 through the tool, so that the handle 200 can be rotated to adjust the on and off of the automatic conversion switch, and the handle 200 can be adjusted to the required gear quickly and labor-savingly.

[0086] like Figure 1 , Figure 2 , Figure 3 as well as Figure 5 As shown, the housing 100 is provided with a mounting position, and the automatic transfer switch further comprises an operating rod 120 , which is detachably mounted on the mounting position, and the tool is configured as the operating rod 120 .

[0087] The installation position may be a notch provided on one side of the housing 100 close to the conversion button 300 .

[0088] The operating rod 120 is provided with a handle 130, and the handle 130 is installed in the installation position provided in the housing 100. The shape of the operating rod 120 is adapted to the shape of the operating hole 220 on the handle 200.

[0089] The handle 130 is provided with a positioning groove, and the position of the positioning groove is opposite to the position of the limiting portion 420. By providing the positioning groove, not only is it solved that when the connecting rod 400 is used to limit the handle 200 and the conversion button 300, the operating rod 120 needs to be removed to make room for the connecting rod 400, but the positioning groove can also indicate the installation position of the connecting rod 400.

[0090] In summary, the operating rod 120 is provided on the housing 100, so that the problem of temporarily finding a tool when operating the handle 200 can be avoided, and the time required to turn the handle 200 can be saved. In addition, the operating rod 120 is detachably connected to the mounting position on the housing 100, and when the operating rod 120 is damaged or the like, the operating rod 120 can be replaced in time.

[0091] like Figures 1 to 3 As shown, the present application also provides a dual power supply system, including the automatic transfer switch in the above embodiment. The structure and effect of the automatic transfer switch have been described in detail in the above embodiment, so the present application will not repeat them here.

[0092] Through the above arrangement, when the maintenance personnel regularly or irregularly inspect, maintain and repair the load and electrical equipment, the automatic transfer switch can reliably cut off the power, thus avoiding the safety problem of the maintenance personnel being electrocuted due to the handle 200 being accidentally touched and the automatic transfer switch being re-energized.

Claims

1. An automatic transfer switch, characterized in that: include: case; A power switching assembly is located in the housing; A handle is mounted on the housing, and at least a portion of the handle is exposed outside the housing, and a portion of the handle located inside the housing is connected to the power switching assembly; when the handle is in a neutral position, both the normal power supply end and the standby power supply end of the automatic transfer switch are disconnected from the load end; the handle is provided with a first lock hole; A conversion button, mounted on the housing, the conversion button including an automatic gear position and a manual gear position; When the conversion button is in the automatic gear position, the handle is driven by the motor to drive the power switching component to operate, so that the power switching component controls one of the normal power supply terminal and the backup power supply terminal to be electrically connected to the load terminal; when the conversion button is in the manual gear position, the handle is manually driven to drive the power switching component to operate, so that the power switching component controls one of the normal power supply terminal and the backup power supply terminal to be electrically connected to the load terminal; A connecting rod, when the handle is in the neutral position, one end of the connecting rod passes through the first locking hole to lock the handle in the neutral position; the other end of the connecting rod is provided with a pressing portion, and the pressing portion presses against the manual gear position to put the handle in a manual operation state.

2. The automatic transfer switch according to claim 1, characterized in that: A side of the pressing portion away from the connecting rod is connected to a limiting portion, and the limiting portion is used to contact the first side wall of the shell to limit the movement of the connecting rod.

3. The automatic transfer switch according to claim 1 or 2, characterized in that: Also included is a locking bar; One end of the connecting rod for passing through the first locking hole is provided with a through hole, one end of the locking rod passes through the through hole, and the locking rod is used to contact the second side wall of the shell to limit the movement of the connecting rod.

4. The automatic transfer switch according to claim 1 or 2, characterized in that: It also includes a limiting plate, which is detachably connected to one end of the connecting rod for passing through the first locking hole, and is used to contact the second side wall of the shell to limit the movement of the connecting rod.

5. The automatic transfer switch according to claim 1, characterized in that: The outer wall of the shell is provided with an indicator, and the indicator is provided with a second lock hole. The second lock hole is opposite to the first lock hole, and the second lock hole is connected to the first lock hole. One end of the connecting rod also passes through the second lock hole.

6. The automatic transfer switch according to claim 5, characterized in that: There are two indicator members, one of which is located on one side of the handle and the other is located on the other side of the handle. Each of the indicator members is provided with the second locking hole, and one end of the connecting rod passes through one of the second locking holes, the first locking hole and the other second locking hole in sequence.

7. The automatic transfer switch according to claim 5 or 6, characterized in that: The first locking hole and the second locking hole are polygonal holes.

8. The automatic transfer switch according to claim 1, characterized in that: The handle is provided with an operating hole, and the operating hole is used for a tool to be inserted into.

9. The automatic transfer switch according to claim 8, characterized in that: The housing is provided with a mounting position, the automatic transfer switch further comprises an operating rod, the operating rod is detachably mounted on the mounting position, and the tool is configured as the operating rod.

10. A dual power supply system, characterized in that: Comprising the automatic transfer switch according to any one of claims 1 to 9.

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