Handle for an industrial circuit breaker with multiple interlocks for improved safety

Abstract

The present invention relates to a handle of an industrial circuit breaker for operating the industrial circuit breaker, which improves safety using a multiple interlock, the handle including a fixed part formed on an outer surface of a case of the industrial circuit breaker, and a rotating part formed to be rotatable in a state of covering one side of the fixed part, connected to a shaft part extended from a switch part inside the case, and rotating the shaft part together to change an opening and closing state of the switch part as the rotating part is rotated, the handle being provided with a plurality of locking mechanisms, and in a case where the locking mechanisms are all unlocked, the rotating part is rotated in one direction to a limit of a rotating movable range, thereby being able to change the switch part to an open state.

Description

Technical Field

[0001] This invention relates to a handle for operating industrial circuit breakers. Background Technology

[0002] In industrial settings, various working devices such as electric motors are used. To supply or cut off current to these devices, industrial circuit breakers are typically installed nearby.

[0003] Even though industrial circuit breakers are installed to safely control the supplied current and prevent electric shock accidents in industrial sites, safety accidents continue to occur.

[0004] For example, industrial sites often generate various types of noise, frequently leading to communication difficulties among workers. In such situations, the power supply / break time caused by circuit breaker operation may deviate from the expected time, and safety accidents may also occur if unauthorized personnel operate the circuit breaker.

[0005] In order to solve the problems mentioned above, the inventors of this invention completed the development of this invention after long-term research and practical exploration. Summary of the Invention

[0006] Technical issues

[0007] In order to solve the problems mentioned above, the object of the present invention is to provide a handle for an industrial circuit breaker, which is provided with multiple locking mechanisms. When all the locking mechanisms are unlocked, the rotating part rotates in one direction to the limit of its rotational range, thereby enabling the switch part to be changed to the open state.

[0008] The technical objectives to be achieved by this invention are not limited to those described above. Those skilled in the art to which this invention pertains can clearly understand other technical objectives not mentioned through the following description.

[0009] Technical solution

[0010] To achieve the objectives described above, a handle according to one embodiment of the present invention is used to operate an industrial circuit breaker. The handle of the industrial circuit breaker includes: a fixing part formed on the outer surface of the casing of the industrial circuit breaker; and a rotating part formed to be able to rotate with one side covering the fixing part, connected to a shaft extending from the switch part inside the casing. As the handle rotates, the shaft rotates together to change the open or closed state of the switch part. The handle is provided with multiple locking mechanisms. When all the locking mechanisms are unlocked, the rotating part rotates in one direction to the limit of its rotational range, thereby changing the switch part to the open state.

[0011] According to a preferred embodiment of the present invention, whenever the locking of each locking mechanism is released, the rotating part can be gradually rotated within a predetermined range by external force so that the degree of release of the handle can be visually confirmed.

[0012] According to a preferred embodiment of the present invention, when all locking mechanisms are unlocked in accordance with the lock release sequence set for multiple locking mechanisms, the switch section can be changed to the open state.

[0013] According to a preferred embodiment of the present invention, the fixing part includes an inner locking ring and a plurality of first locking holes are horizontally arranged in accordance with the curvature. The rotating part includes an outer locking ring, which is formed to cover the inner locking ring and a second locking hole is horizontally arranged in accordance with the first locking holes. The first locking holes and the second locking holes corresponding to each other constitute a locking mechanism as a pair, which can provide the locking function of an interlocking device that is fastened by using a pair of first locking holes and second locking holes.

[0014] According to a preferred embodiment of the present invention, whenever the locking of each locking mechanism is released, the internal locking ring detects the release of the lock to allow the rotating part to rotate within a predetermined range in one direction. As the rotating part is allowed to rotate, whenever the rotating part rotates within a predetermined range in one direction, the first locking hole of the most recently released locking mechanism is closed. Whenever the rotating part rotates within a predetermined range in another direction, the first locking hole can be opened in the reverse order of closing the first locking hole.

[0015] According to a preferred embodiment of the present invention, when the door of the enclosure is closed, the industrial circuit breaker is connected to an external power source. When the door is open, the industrial circuit breaker cuts off the external power source. The industrial circuit breaker includes a stop device that will open the door during operation, keeping the door open. When the rotating part rotates to the limit of its rotational range in another direction, the stop device can be activated to open the door and cut off the external power source.

[0016] The effects of the invention

[0017] The present invention has the following effect: because multiple locking mechanisms are provided, when all the locking mechanisms are unlocked, the rotating part rotates in one direction to the limit of its rotational range, thereby changing the switch part to the open state. Therefore, by designating the managers of each locking mechanism, the industrial circuit breaker can be precisely activated only when power is needed or power is cut off.

[0018] The present invention also has the following effect: it can prevent safety accidents by preventing industrial circuit breakers from malfunctioning due to communication errors between workers in the industrial field.

[0019] The present invention also has the following effect: in the event of leakage in the housing of an industrial circuit breaker, the door can be opened by operating the handle in another direction and leakage can be prevented.

[0020] On the other hand, even if there are effects not explicitly mentioned, the expected effects achieved by the technical features of the present invention, the effects described in the following specification, and their potential effects should be regarded as the same as those described in the specification of the present invention. Attached Figure Description

[0021] Figures 1 to 3 This is a reference diagram illustrating the configuration of the handle of the industrial circuit breaker of the present invention.

[0022] Figure 4 This is a reference diagram illustrating the specific form of the handle of the industrial circuit breaker of the present invention.

[0023] Figures 5 to 7 This is a reference diagram illustrating the leakage prevention structure of a blocking device according to an embodiment of the present invention. Detailed Implementation

[0024] In describing this invention, detailed descriptions will be omitted when it is determined that relevant well-known functions that are obvious to those skilled in the art may unnecessarily obscure the spirit of the invention.

[0025] The system and execution device of the present invention can be implemented by a computer including one or more processors, memory, etc. As an example, the computer may include various devices such as personal computers, server computers, smartphones, tablet computers, and wearable devices. In this case, the computer may manifest as a user terminal, a service terminal, a service server, etc., depending on the user.

[0026] In this specification, terms such as “department,” “module,” “component,” and “interface” refer to computer-related entities, which are hardware, software, or combinations of hardware or software. For example, “communication department” or “communication module” refers to hardware, software, or combinations of hardware or software that perform communication functions.

[0027] Figures 1 to 3 This is a reference diagram illustrating the configuration of the handle 3000 of the industrial circuit breaker 1000 of the present invention.

[0028] Specifically, Figure 1 This diagram shows the shape of the circuit breaker 1000 as viewed from the front. Figure 2 A diagram showing the internal structure of the circuit breaker 1000.

[0029] Reference Figure 1 and Figure 2 The circuit breaker 1000 of the present invention includes a housing 1100, a handle 3000, and a switch part 1300, including a bearing 1220 that connects the handle and the switch part and transmits rotational force from the handle.

[0030] A handle 3000 is used to control the switch 1300 inside the housing and can be installed on the outer side of the housing 1100. The handle 3000 has a shape that extends in one direction, allowing the user to easily grip it. The handle 3000 is connected to the housing 1100 so that it can rotate around a point attached to the outer side of the housing 1100. The handle 3000 opens and closes the switch 1300 at a predetermined rotation position, and the user can easily identify the open or closed state of the switch 1300.

[0031] The switch 1300 is located inside the housing 1100 and is connected to the handle 3000. The external power supply can be adjusted by operating the handle 3000 located on the outer side of the housing 1100. For example, the shaft 1220 transmits the rotational energy of the handle 3000 to the switch 1300, thereby adjusting the open and closed state of the switch 1300.

[0032] and, Figure 3 This diagram shows the shape of the circuit breaker 1000 as viewed from the side.

[0033] Reference Figure 3 The handle 3000 can change the switch 1300 to the on or off state at a set position.

[0034] For example, when the handle 3000 is perpendicular to the ground, the switch 1300 can be in the closed state. By rotating it in one direction, when the handle 3000 is perpendicular to the ground, the switch 1300 can be in the open state. However, the method of changing the state of the switch based on the position of the handle 3000 is not limited to this, and various methods can be applied depending on the environment in which the industrial circuit breaker is installed.

[0035] Figure 4 This is a reference drawing illustrating the specific form of the handle 3000 of the industrial circuit breaker 1000 of the present invention.

[0036] Reference Figure 4 The handle 3000 includes a fixing part 3100, which is formed on the outer surface of the housing 1100 of the industrial circuit breaker.

[0037] Furthermore, the handle 3000 includes a rotating part 3200, which is configured to rotate while covering one side of the fixed part 3100. It is connected to a shaft part 1220 extending from the switch part 1300 inside the housing 1100. As it rotates, the shaft part 1220 rotates together to change the open and closed state of the switch part 1300.

[0038] Furthermore, the handle 3000 is equipped with multiple locking mechanisms 3250. When all the locking mechanisms 3250 are unlocked, the rotating part 3200 rotates in one direction to the limit of its rotational range, thereby changing the switch part 1300 to the open state.

[0039] According to one embodiment of the present invention, whenever the locking mechanism 3250 provided on the handle is released, the rotating part 3200 can be gradually rotated within a specified range by external force, and the degree of release of the lock on the handle 3000 can be visually confirmed.

[0040] For example, such as Figure 3 As shown, when the grip portion of the handle 3000 is perpendicular to the ground and pointing downwards, the switch portion 1300 is in the closed state; when the grip portion of the handle 3000 is perpendicular to the ground and pointing upwards, the switch portion 1300 is in the open state. With this configuration, the total rotational range of the rotating portion 3200 is 180 degrees. If three locking mechanisms are provided, they can be configured to rotate 60 degrees gradually each time the locking mechanism 3250 is released.

[0041] Furthermore, when all locking mechanisms are unlocked in accordance with the lock release sequence set for the multiple locking mechanisms 3250 installed on the handle 3000, the switch section 1300 can be changed to the open state.

[0042] For example, when the handle has three locking mechanisms, an inherent locking and unlocking sequence for each locking mechanism can be set. Specifically, if the locking mechanism set as the first priority is not unlocked first, the rotating part 3200 of the handle will be completely unable to rotate. In this case, after all locking mechanisms are reset to the locked state, the unlocking will begin from the locking mechanism set as the first priority. The inherent locking and unlocking sequence can be detected by a sensor located inside at least one of the first and second locking holes described later.

[0043] Furthermore, the fixing part 3100 includes an inner locking ring with a plurality of first locking holes 3251 horizontally arranged corresponding to the curvature. The rotating part 3200 may include an outer locking ring 3210, which is formed to cover the inner rotating locking ring, and has a second locking hole 3252 horizontally arranged corresponding to the first locking holes 3251. In this case, each locking ring is fixed in its original position, and only the holding part 3220 of the rotating part 3200 can be rotated by external force. The locking ring and the holding part 3220 can also rotate together.

[0044] The first locking hole 3251 and the second locking hole 3252, which correspond to each other, form a locking mechanism 3250 as a pair, which can provide the locking function of the interlocking device that is fastened by the first locking hole 3251 and the second locking hole 3252 as a pair.

[0045] Furthermore, whenever the locking mechanisms 3250 are released, the internal locking ring detects the release and allows the rotating part 3200 to rotate within a predetermined range in one direction. As the rotating part 3200 rotates, it closes the first locking hole 3251 of the most recently released locking mechanism 3250 whenever it rotates within a predetermined range in one direction. Conversely, it opens the first locking hole 3251 in the reverse order of closing it whenever it rotates within a predetermined range in another direction. In this case, preferably, each locking ring remains fixed in its original position, allowing the operator to easily confirm the locking hole status, with only the gripping part 3220 of the rotating part 3200 being rotated by external force.

[0046] Therefore, after completing their work on the industrial site, multiple users of the 3250 handle locking mechanism fastening interlock device can avoid confusing the position of their own locking mechanism.

[0047] For example, during the process of changing the switch 1300 from the open state to the closed state, a specific first locking hole (one of 3151-1 to 3151-3) can be opened within a predetermined rotation range. Specifically, as... Figure 4 As shown, there are three locking mechanisms 3250. During the process of changing the switch part 1300 of the circuit breaker to the closed state, if the first locking hole 3151-1 of the locking mechanism 3250, which consists of the first locking hole 3151-1 and the second locking hole 3152-1, is opened first, then the person who last unlocks the device can tighten the interlocking device that passes through the first locking hole 3151-1 and the second locking hole 3152-1 after confirming that the locking mechanism 3250 with the first locking hole 3151-1 is open. Subsequently, the person who performs the lock release in the middle sequence confirms the opening of the first locking hole (3251-2 or 5251-3) and tightens the interlocking device.

[0048] Figures 5 to 7This is a reference diagram illustrating the leakage prevention structure of the blocking device 1250 according to an embodiment of the present invention.

[0049] The industrial circuit breaker 1000 of the present invention may include a stop device 1250 for preventing electric shock accidents caused by leakage.

[0050] When the door 1120 of the enclosure 1100 is closed, the industrial circuit breaker 1000 is connected to an external power source. When the door 1120 is open, the industrial circuit breaker 1000 can cut off the external power source.

[0051] Reference Figure 5 The blocking device 1250 is located adjacent to the end of the body 1110 and the door 1120 on the side where they are not hinged. In operation, a portion of it protrudes outward from the housing 1100, allowing the door 1120 to remain open. Although the external power supply can be cut off the moment the door 1120 is opened to prevent the risk of electric shock, the door 1120 may be exposed to the risk of electric shock if it is closed again during operation. Therefore, the blocking device 1250 needs to maintain the door 1120 in the open state to continuously cut off the external power supply during operation.

[0052] If the rotating part 3200 of the handle 3000 rotates to the limit of its rotational range in another direction due to external pressure applied to the gripping part 3220, the blocking device 1250 can be activated to open the door and cut off the external power supply.

[0053] Furthermore, the handle 3000 minimizes the risk of electric shock to users and can be supported by materials such as rubber to provide a frictional force above a specified level. As a result, users can easily apply pressure to rotate the handle 3000 by kicking or using a bar-shaped tool.

[0054] Figure 6 and Figure 7 To view the cross-sectional view of the body 1110 and door 1120 from above on the side where the hinge connection is not achieved, refer to... Figure 6 and Figure 7 The blocking device 1250 may include a blocking unit 1270, which, when the blocking device 1250 is in operation, moves along the contact surface T between the body 1110 and the door 1120 on the other side, thereby separating the body 1110 and the door 1120 to maintain the open state of the door 1120. (Refer to...) Figure 5 In order to stably maintain the open state of the door 1120, multiple blocking units 1270 may be provided, which can be arranged vertically along the contact surface T between the body 1110 and the door 1120 on the other side.

[0055] Furthermore, the blocking device 1250 may include a blocking drive unit 1260, which, when the trigger is activated by the rotation of the rotating unit 3200, uses an internal elastic device to launch a plurality of blocking units 1270, causing the plurality of blocking units 1270 to move along the contact surface T between the body 1110 and the door 1120 on the other side.

[0056] Furthermore, the body 1110 and the door 1120 may each include a guide portion 1111 and a fixed shoulder 1113 at the ends of the other side where the hinge connection is not achieved, for assisting the operation of the blocking device 1250.

[0057] Specifically, the blocking unit 1270 may include an entry part 1271, an anti-contact part 1272, a support part 1273, and a braking part 1274.

[0058] As the blocking unit 1270 moves, the entry part 1271 enters between the contact surfaces T of the body 1110 and the door 1120, forming a shape in which the two contact surfaces T are separated from each other. For example, a conical shape with an inclined surface can be formed.

[0059] If the entry of the blocking unit 1270 is completed through the entry part 1271, the anti-contact part 1272 prevents the two contact surfaces T from contacting each other, thus maintaining the door 1120 in an open state.

[0060] The support portion 1273 performs a supporting function to prevent deformation of the structure formed at the end of the body 1110 and the door 1120 on the other side where the hinge connection is not achieved.

[0061] Specifically, the support portion 1273 may have an inclined surface with the same inclination angle as the entry portion 1271. Thus, in the event of a collision between the guide portion 1111 and the stop unit 1270 due to rotation along the closing direction of the door 1120, the guide portion 1111 can be stably supported, preventing deformation of the end product shape, such as deviation of the inclination angle of the guide portion 1111.

[0062] When the braking unit 1274 collides with the end structure such as the fixed shoulder 1113 (described later), it can prevent the stopping unit 1270 from moving further. The rear of the braking unit 1274 is directly or indirectly connected to the elastic device of the stopping drive unit 1260, and pressure can be applied to launch the stopping unit 1270.

[0063] As a structural element at the end, the guide portion 1111 has an inclined surface corresponding to the entry portion 1271 of the movable stop unit 1270, which can reduce friction with the entry portion 1271 and guide the tip of the entry portion 1271 to move between the body 1110 and the door 1120.

[0064] As a structural element at the end, the fixed shoulder 1113 collides with the braking part 1274 of the moving stop unit 1270, limiting the movable range of the stop unit 1270 to a specified range, so that the anti-contact part 1272 of the working stop unit 1270 is positioned between the contact surfaces T at the end on the other side.

[0065] It will be apparent to those skilled in the art that the present invention can be implemented through other specific embodiments without departing from the characteristics of the invention. Therefore, the detailed description described above is merely illustrative at all levels and should not be construed as limiting. The scope of the invention should be determined based on a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are within the scope of the invention.

Claims

1. A handle for an industrial circuit breaker that utilizes multiple interlocks to enhance safety, used for operating the industrial circuit breaker, characterized in that, include: A fixing part is formed on the outer surface of the enclosure of the industrial circuit breaker; and The rotating part is configured to rotate while covering one side of the fixed part. It is connected to a shaft extending from the switch part inside the housing. As the switch part rotates, the shaft rotates together to change the open or closed state of the switch part. The handle is equipped with multiple locking mechanisms. When all the locking mechanisms are unlocked, the rotating part rotates in one direction to the limit of its rotational range, thereby changing the switch to the open state. Each time the locking mechanism is released, the rotating part is gradually rotated within a specified range by external force, so that the degree of release of the handle can be visually confirmed. The fixing part includes an internal locking ring, and multiple first locking holes are horizontally arranged corresponding to the curvature. The rotating part includes an outer locking ring, which is formed to cover the inner locking ring, and a second locking hole is horizontally provided corresponding to the first locking hole. The first locking hole and the second locking hole, which correspond to each other, form a locking mechanism as a pair, providing the locking function of the interlocking device that is fastened by the state of the pair of first locking holes and the second locking holes.

2. The handle of the industrial circuit breaker with enhanced safety through multiple interlocking as described in claim 1, characterized in that, When all locking mechanisms are unlocked in the order set for unlocking multiple locking mechanisms, the switch can be changed to the open state.

3. The handle of the industrial circuit breaker with enhanced safety using multiple interlocking as described in claim 1, characterized in that, Each time the locking mechanism is released, the internal locking ring detects the release and allows the rotating part to rotate within a specified range in one direction. As the rotating part rotates, whenever the rotating part rotates within a predetermined range in one direction, the first locking hole of the recently unlocked locking mechanism is closed; whenever the rotating part rotates within a predetermined range in another direction, the first locking hole is opened in the reverse order of closing the first locking hole.

4. The handle of the industrial circuit breaker with enhanced safety using multiple interlocking as described in claim 1, characterized in that, With the enclosure door closed, the industrial circuit breaker is connected to the external power supply; with the door open, the industrial circuit breaker disconnects the external power supply. Industrial circuit breakers include a stopping device that, when in operation, opens a door to keep it open. When the rotating part rotates to the limit of its rotational range in another direction, the door is opened and the external power is cut off by activating the stop device.

Images