WO2018188067A1 - Interlocking device between electrical switches - Google Patents

Abstract

Provided is an interlocking device (10) between electrical switches, capable of performing mechanical interlocking between two or more circuit breakers. The interlocking device (10) comprises: a lockset (13); a linkage mechanism that links when pivoting with the lockset (13); a brake device (26) for limiting or releasing the action of the linkage mechanism; a transmission device (24) for transmitting a brake signal to the brake device (26); and a housing for assembling the lockset (13), the linkage mechanism, the brake device (26) and the transmission device (24). The interlocking device (10) has a simple mechanical linkage structure, is convenient to install, can prevent malfunction of the electrical switches, and can improve the safety performance of the electrical device in use.

Description

Interlocking device between electrical switches Technical field

The present invention relates to an interlocking device between electrical switches, and more particularly to a switch-to-lock device that can improve electrical safety performance.

Background technique

The applicant of the present invention has a series of inventions and creations on motor switching and power supply management based on his enthusiasm for improving industrial safety and on-site experience. More than a dozen patents have been applied for and have been approved. In particular, the applicant of the present invention has provided a series of practical motor switch locking device designs, which can be used in combination with various brands and models of motor switches, and has achieved good results. The reason why the applicant of the present invention has such a series of inventions and creations on the safety of the motor switch is that in view of many electrical accidents in the past and the past, the electrical accidents occur in the maintenance events of the motor machinery, mainly lacking a practical motor switch locking device. However, there has not been a locking device that is applicable to various states.

The "Electrical Safety Technical Information" published by the Taiwan Labor Committee's Labor Safety and Health Research Institute in 1999 was pointed out by Su Wenyuan's research report: "Electrical accidents have always been one of the main causes of labor accidents and should be avoided as much as possible to protect workers' safety. The main cause of electric shock accidents is the lack of awareness of electrical safety by public institutions and labor, which causes potential dangers such as unsafe environment and unsafe behavior at the work site. There are two main types of common electrical safety hazards. The first is from the use of electrical machinery, and the second is the negligence in electrical work. In order to remedy the lack of awareness of electrical safety in public institutions and labor, and to prevent the use of electrical work, it is necessary to prevent the employer from using electrical machinery in Article 45 of the “Labor Safety and Sanitation Regulations” in Taiwan. Facilities, that is, for the use of power-operated machinery, are of significant danger. Emergency brakes with obvious signs should be placed at appropriate locations to immediately interrupt the power and interlock with the brake system to quickly stop the machine in an emergency. In addition, in terms of preventing the use of electrical work, in the case of power outages, Taiwan’s “Work Safety and Health Facilities Regulations” Article 254 stipulates that the employer engages in the circuit, the circuit support, or is close to the circuit after the circuit is opened. When laying, constructing, inspecting, repairing, painting, etc. of circuit work, after confirming that the circuit is open, take an open switch on the circuit during operation, and “lock” or mark “no power transmission” or “blackout” In the homework" or Set up facilities for monitoring personnel. In the first kind of disaster from the use of electrical machinery, the cause is that almost everyone has insufficient knowledge of the principle of electrical safety to interrupt the power. Although Taiwan’s “Work Safety and Health Facilities Regulations” Article 254 further stipulates that switches that take open circuits in circuits should be “locked” in operation, but so far, the “locking” regulations often flow in Empty talk, there is no real implementation.

According to the International Electrotechnical Regulations NEC.422.31.(430.102) (440.14), the shunt switch or circuit breaker used as the isolation device shall have a locking device; the position of the isolating device means that it can be locked in the visible range of the electric appliance or when it is open. ; and the locking device mechanism should be in place. The principles and uses of its regulations are to prevent accidental power transmission and reverse power transmission (without affecting public safety), and to regulate: 1. Private indoor distribution panels do not need to be locked; Lock; the motor centralized control panel can be locked with the switch handle; when there is a dangerous situation after the lock, it can not be locked.

Therefore, the locking device prevents accidental power transmission, reverse power transmission, etc., and since there is a visually invisible condition, a danger may occur, so that it is required to be locked during maintenance to ensure safety. In view of this, manufacturers of switches in the world have production-related products. These include external and internal keys. There are also mandatory regulations and penalties in OSHA (Occupational Safety and Health Standards), Fire Protection Laws, etc.

In special places, there are different requirements for the switch. For example, in many dangerous places, such as chemical factories, gunpowders, gas, liquid factories, military facilities, etc., some electrical switches must be required in power transmission. When the switch is closed, it is not allowed to be accidentally touched or malfunctioned to open the switch, causing serious losses. For example, the heart of the furnace is melting high temperature and high pressure liquid, which may cause uncontrollable consequences. Therefore, in some special places, the switch must be locked in the state of being energized (closed) ON. Because of the above reasons, the manufacturer of the circuit breaker switch in the world has a lock on the device that is locked on the switch. (closed) the device in the ON state, and manufactures another product.

In special environment, some special functions are required. For example, in many unmanned computer rooms, the circuit breaker switch in some circuits must prevent the power from being interrupted by external forces, causing loss and even accidents. . However, in this circuit, in the event of an accident, whether it is overload, fault current, ground fault, etc., the circuit breaker must be tripped to avoid damage to the equipment and even cause a fire. Therefore, the requirements of the above-mentioned locking device are different from the above two states, one forcibly blocking in the energized (closed, ON) state, one for forcibly locking in the power-off state (OFF), and the fault must be able to make the circuit breaker open. The device acts as a trip to isolate the accident.

In many cases of actual power systems, there are many situations in which two circuit breakers must be locked to each other, that is, two circuit breakers interlock (Interlock), that is, only one of the two circuit breakers is energized, not two Simultaneously Electricity, otherwise it will cause a short circuit accident. In the above-mentioned state, most of the automatic switching switches (also known as ATS) are used in general, but the automatic switching switches are generally two side by side on the same casing, and the circuit breakers must have the same specifications. In the actual situation, all the elastic application modes are lost, and if the device can be improved by the switch safety lock locking method of the present invention, the above inconvenience can be solved for a long time. However, in order to be able to achieve the function of electrical and mechanical locks, it meets the requirements of its safety. In order to solve the above various conditions, it is necessary to have ON, OFF, and Trip requirements, and it is necessary to have an interlock function.

When the three circuit breakers must be in the lock state, that is, the three circuit breakers interlock the function of the interlock Tie, that is, the three circuit breakers can only allow at most two simultaneous closing (ON), if the electrical switch room of the present invention can be applied. Interlocking devices can solve long-standing problems. And because it can be mechanically locked, it can increase its absolute reliability. And by the mechanical action of the state, it can be used for identification and increase the convenience and safety of use. The invention also improves, for example, the inconvenience and shortcomings in the patent of the non-fuse switch locking device of the Taiwanese patent M318184 patent, which can only lock the position of the trip position, although it must be able to be powered off and locked when repairing The requirements of the locking device, but not capable of being used in conjunction with the conditions of the other different functional requirements described above, must be interlocked. The present invention also improves the improved patent of the switch safety interlocking method, which may cause problems in the lock function by electrically locking the lock portion. Such as power outages, etc. may cause trouble or no action. In the prior art, the countries in the world generally use traditional locks for interlocking. Different methods require different locks and components, and multiple safety lock implementations are derived, and there is no actual mechanical lock function. Discrimination, this will result in an increase in production costs, and increase the burden of product management and the troubles of the owners. In the prior art, in the world of interlocking devices, in the professional manufacturer, there is a lock for the lock, commonly known as Kirkey, which is the key to the lock in the lock. If there are two locks, only one key is placed on the top, and the other lock must be keyed. The key can be placed on the other lock and controlled by the key. In the same way, when three locks are used, two keys are attached, so that the lock function is achieved by the control of the key. Although it has versatility, simple structure, and easy installation, the potentially fatal disadvantage is that when improperly using the spare key to intervene in the control operation, it may cause malfunction and cause safety hazard. These problems have existed for a long time, and practitioners at home and abroad have not been able to properly solve these problems.

Summary of the invention

The main object of the present invention is to provide an interlocking device for use in an electrical switch, such as a circuit breaker and a circuit breaker, which is a mechanical interlocking device, which is particularly suitable for short-distance control and avoids Malfunction or non-operation due to electrical failure. In particular, the main purpose of the present invention is to perform mechanical interlocking between two circuit breakers, to prevent three simultaneous mechanical interlocks between two circuit breakers, and more than three circuit breakers. Interlocking applications, and providing a versatile mechanical switch safety lock device. The invention provides a switch locking device with simple structure and convenient installation, which can comprehensively use the solutions of the above various functional requirements, and prevent the occurrence of malfunction by the combination of reliable and reliable mechanical interaction. It can improve the safety performance of electrical equipment.

Technical means to solve the problem:

In order to achieve the above object, an interlocking device for a switch safety lock provided by the present invention includes: a lock; an interlocking mechanism interlocking with the lock when pivoting; and a brake device for limiting or releasing the linkage The action of the mechanism; and a transmission to transmit a brake signal to the brake device; and a housing for assembling the lock, the linkage mechanism, the brake device, and the transmission. The interlocking device of the present invention has an auxiliary transmission device that can provide a distance transmission function by using, for example, a wire control module. Preferably, the one-wire control module has two ends, one end is a force end, and one end has a movable medium in the stress end, or an equivalent function actuating device. And it must have a brake mechanism that makes the switch safety lock internal lever action or not, and then combine with the switch safety lock body lock, so that the interlock function can be achieved, and the malfunction can be prevented, and the mechanical pair The lock is more secure, ensuring compliance with public safety regulations and preventing accidents.

In order to achieve the mechanical locking function, the locked lock is in a locked state in which multiple positions can be achieved. The lock must have a special function and can be changed in various combinations, for example, the key rotation has three positions or two positions. It can be pulled out or unplugged at various locations to meet the requirements of various state functions.

In order to meet the requirements of the mechanical locking function, it is necessary to manufacture a braking mechanism. One end of the braking mechanism is coupled with an auxiliary transmission device such as a wire control module, and at least one other (group) switch safety lock is braked. The action state of the mechanism is that when at least one (group) auxiliary transmission is actuated, the brake mechanism is released, so that the shift lever inside the lock can move freely.

In order to achieve the mechanical interlock function between the two circuit breakers, it can be behind the switch safety lock or at the appropriate position (including the inside of the switch safety lock). When the switch safety lock is actuated, the internal gear lever is linked to move. When the auxiliary transmission device, such as the line control module, is linked, the internal lever of the other switch safety lock will not operate, so that the mutual action between the two switch safety locks can achieve that the two circuit breakers will not be simultaneously put into operation. The accident caused an accident.

In order to prevent three mechanical interlocking functions between the three circuit breakers, at least two auxiliary transmissions such as remote control can be placed above or in the appropriate position of the switch safety lock (including the inside of the switch safety lock). When the module is linked, the case that can be implemented at this time is to place the upper part of the switch safety lock, and reserve a movable groove. There is a piece in the groove, and the piece is fixed with the internal gear lever, so that when the switch safety lock is actuated , interlocking the internal gear lever action, promoting auxiliary The transmission device is interlocked with the line control module, and the shift lever inside the other two switch safety locks is actuated or not acted, so that at least one of the three switches can be locked only, so that the desired function can be achieved.

As in the above two cases, the requirements of the switch safety lock of the present invention for the interlocking condition can be changed by using a key in addition to the mechanical mechanism inside the switch safety lock. An additional auxiliary drive, as well as a brake mechanism, can be used in conjunction with the crossbar in the lock and the relative logic of the position of the brake stud to achieve interlocking applications between multiple circuit breakers.

As described above, in the interlocking application between a plurality of circuit breakers, an interlocking device for a switch safety lock that can be used universally can be obtained, and can be applied to most places, using the mutual The lock device can get the maximum economic benefit and become a standard equipment. It can reduce the troubles in equipment maintenance in the future, and solve the problem when someone accidentally gets the spare key and does not use the spare key. Malfunctions occur to prevent accidents or accidents from happening in order to meet safety requirements.

In order to solve the existing problems, the present invention not only has novelty and progress, but also considers market problems in the design process. In addition to the functionality of the solution, whether the market-oriented problem is appropriate or can comply with world regulations such as NEC, IEC, JIS, BS, CCC, CNS, etc., as described above, the solution and means can be achieved. The purpose of the functionality can meet the requirements of various current specifications.

DRAWINGS

1 is a schematic view showing the appearance of an interlocking device between electrical switches of the present invention.

2 is a schematic view showing the operating states of two interlocking devices of the interlocking device between the electrical switches of the present invention.

3 is a schematic view showing the action state of another embodiment of the two interlocking devices of the interlocking device between the electrical switches of the present invention.

Fig. 4 is a schematic view showing the operation state of the two interlocking devices of the interlocking device between the electrical switches of the present invention.

Fig. 5 is a schematic view showing the operation state of three interlocking devices of the interlocking device between the electrical switches of the present invention.

Figure 6 is a schematic view showing the appearance of the internal key of the interlocking device between the electrical switches of the present invention in the casing.

In the picture:

Interlocking device 10; body 11; key 12; lock 13;

Blocking position 14; blocking position display 15; normal position 16;

Normal position display 17; shift lever 18; strip opening 19;

Linking the positioning plate 20; the front fixing seat 21; the rear fixing seat 22; fixing the screw hole 23;

Transmission device 24; auxiliary transmission device 24A; brake mechanism 26; brake stud 27;

Fixing hole 28; rear fixing hole 29; case 30; fixing plate 31.

detailed description

The present invention will be further described in conjunction with the accompanying drawings and specific embodiments, which are to be understood by those skilled in the art.

According to the interlocking device 10 of the electrical switch of the present invention, a preferred embodiment of the device is implemented. As shown in FIG. 1, the locking device has a box-shaped body 11 as shown in the figure. The key 12 is inserted into the lock 13 and rotated counterclockwise to the latched position 14 when the internal transmission mechanism is actuated to move the shift lever 18 to the latched position 14 and displayed or indicated to the latched position display 15 whose normal position display 17 is not displayed. . Conversely, when the clockwise rotation to the normal position 16, the internal transmission mechanism is actuated, the shift lever 18 is moved to the normal position 16, and displayed or marked in the normal position display 17, at which time the lock position display 15 is not displayed. As shown in FIG. 1 , there is a type of opening 19 above the interlocking device 10 , and an internal interlocking positioning plate 20 is arranged in the middle, and the shift lever 18 inside the lock 13 can be moved in front and rear of the interlocking positioning plate 20 . A fixing base, a front fixing seat 21 and a rear fixing seat 22 are fixed to the box-shaped body 11. The fixing seat has a fixing screw hole 23, and an auxiliary transmission device 24 can be disposed thereon, which can be provided between the electric switch and the electric switch. The interlocking mechanism of the interlocking device 10. Of course, the installation assisting transmission device 24 can also be fixed at the rear of the body 11 with a fixing hole 29 to achieve the function of interlocking with the interlocking device 10 between his electrical switches. A device brake mechanism 26 may be disposed below the body 11 and has a brake stud 27 therein. When only the auxiliary transmission device 24A of the interlock device 10 is fixed, the fixing hole 28 can be fixed on the fixing hole 28, and the auxiliary transmission device 24A Actuation to control the brake mechanism 26 causes the shift lever 18 in the lock 13 to be controlled to achieve a mechanical lock function.

According to the interlocking device 10 between the electrical switches of the present invention, the first embodiment is implemented as shown in FIG. The main body 11 of the interlocking device 10 has a rear fixing hole 29 for connecting an auxiliary transmission device 24, and the transmission device 24 is coupled to the shift lever 18 inside the lock 13. When the document post 18 is actuated to the normal position 16, the transmission 24 is also actuated and linked to the brake mechanism 26 of his interlock only device 10, which acts (as shown in Figure 1). He only has the internal document bar 18 of the interlock device 10 unable to transmit and lock in the latched position 14. Thus, when he only interlocks the device 10, if the spare key 12 is not actuated in the lock 13, the function of the lock can be achieved. As shown in FIG. 2, when the interlock 10 is in the latched position 14, the internal lever 18 of the lock 13 is in front and the transmission 24 associated with the lock 13 is inactive. At the same time, the brake mechanism 26 of the interlocking device 10 with him does not operate, and at this time, only the interlocking device 10 can move freely, and the function of fully interlocking can be achieved without causing malfunction.

According to the interlocking device 10 between the electrical switches of the present invention, the second embodiment is implemented as shown in FIG. Interlocking There is a linkage positioning plate 20 above the body 11 of the body 10. The linkage positioning plate 20 is fixedly coupled with the internal gear lever 18 of the lock 13. A rear fixing seat 22 is arranged above the body 11, and the auxiliary transmission device 24 is fixed and fixed. A fixing screw hole 23 on the seat 22. When the document post 18 is actuated to the normal position 16, the transmission 24 is also actuated and linked to the brake mechanism 26 of his interlock only device 10, which acts (as shown in Figure 3). He only locks the internal document bar 18 of the interlock device 10 in a latching position 14 . Thus, when he only interlocks the device 10, if there is a spare key 12, it will not operate, so that the function of the lock can be achieved. As shown in FIG. 3, when the interlocking device 10 is in the blocking position 14, the internal lever 18 of the lock 13 is in front, the transmission 24 linked to the lock 13 is inactive, and the brake mechanism of the interlocking device 10 is interlocked with him. 26 does not operate, at this time his interlocking device 10 can move freely, and the function of the logic can be completely sequenced without causing a malfunction.

According to the interlocking device 10 between the electrical switches of the present invention, the third embodiment is implemented as shown in FIG. Above the interlocking device 10, there is a linkage positioning plate 20, and the linkage positioning plate 20 is interlocked with the internal gear lever 18 of the lock 13. A locking bracket 13 has a front fixing seat 21, and the auxiliary transmission device 24 is fixed to the front fixing seat. The fixing screw hole 23 on the 21, when the shift lever 18 is actuated to the blocking position 14, the transmission 24 is also actuated and linked to the brake mechanism 26 of the interlocking device 10 only, the brake mechanism 26 does not operate. (As shown in Fig. 4), so that his interlocking device 10 can move freely, and the functions of the logic can be completely sequenced without causing malfunction. As shown in Figure 4, when the interlock 10 is in the normal position 16, the internal lever 18 of the lock 13 is behind, the transmission 24 linked to the lock 13 is inactive, and the brake mechanism of the interlocking device 10 is only interlocked with it. 26 action, his internal interlocking device 10 internal file lever 18 can not be locked in the locked position 14, so that when his only interlocking device 10 in the lock 13 if the spare key 12 does not act, so can achieve The function of the lock.

According to the interlocking device 10 between the electrical switches of the present invention, the fourth embodiment is implemented as shown in FIG. The implementation of this case is an extended application of the third embodiment. When three pairs of lock functions are used, there must be two in the auxiliary transmission 24. Similarly, the brake mechanism 26 below the interlocking device 10 must also be controlled by the transmissions 24 of the other two interlocking devices 10, such that when the interlocking device 10 is braked therein, in its brake mechanism 26, As long as he only locks the interlocking device 10 to the blocking position 14, the function of limiting the movement of the shift lever 18 is released at this time, so that when the three switches are engaged in the interlocking function, three effects of not simultaneously turning ON can be achieved, and It is done in a mechanical way. Similarly, the interlocking function of the three interlocking devices 10 can also be achieved by the extended application of the second embodiment, as described above.

According to another embodiment of the interlocking device 10 between the electrical switches of the present invention, as shown in FIG. 6, the specification function shown in FIG. 1 is used to interact the brake mechanism 26 with the shift lever 18. Linking mechanism, placed in the box In 30, the fixing plate 31 of the auxiliary transmission 24 is externally provided, which is another solution.

In summary, the device for interlocking the safety lock of the switch can solve the application of various special requirements through the internal mechanical structure and the interconnection of the transmission mechanism and the brake mechanism, and the mechanical locking mechanism is adopted. The invention solves the accident that electrical locks may occur, and the invention is particularly suitable for the application of the lock function between switches of a short distance, and has practical industrial applicability. The embodiments described above are merely preferred embodiments for the purpose of fully illustrating the invention, and the scope of the invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of the present invention. The scope of the invention is defined by the claims.

Claims (6)

An interlocking device between electrical switches, characterized in that it comprises: a lock a linkage mechanism that interlocks with the lock when pivoting; a braking device for limiting or releasing the action of the linkage mechanism; a transmission to transmit a brake signal to the brake device; a housing for assembling the lock, the linkage mechanism, the brake device and the transmission. The interlocking device between the electrical switches according to claim 1, wherein the housing is provided with a fixing seat, and the transmission device can be directly locked to the corresponding position of the housing or the fixing base. The interlocking device between the electrical switches according to claim 1, wherein the linkage mechanism is a blocking lever, and the blocking lever is provided with a linkage positioning plate and a braking member at an appropriate position, and the locking member The linkage stops at a default position; when the lever stays in the default position, the bottom of the lever or the linkage positioning plate resists the transmission to transmit a signal to the brake device of the interlocking device only The moving device limits or releases the linking mechanism. The interlocking device between the electrical switches according to claim 3, wherein the braking member is a stud, and the card is located at the stud when the braking device limits or releases the linking mechanism The action of the limit bar. The interlocking device between the electrical switches according to claim 3, wherein the braking member is a hole, and when the braking device limits or releases the linkage mechanism, the card is located in the hole to limit the position. The action of the lever. The interlocking device between the electrical switches according to claim 1, wherein the housing surface is provided with a display device to display an operating state of the switch security lock.

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