CN212783291U

CN212783291U - Coil box for switching electric appliance and switching electric appliance

Info

Publication number: CN212783291U
Application number: CN202021866538.8U
Authority: CN
Inventors: 林长青; 郭奇顺; 涂占炜
Original assignee: Schneider Electric Xiamen Switch Equipment Co ltd
Current assignee: Schneider Electric Xiamen Switch Equipment Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-03-23
Anticipated expiration: 2030-08-31

Abstract

Provided are a coil box for a switching apparatus and a switching apparatus. The coil box includes: a plurality of coil arrangements, each coil arrangement comprising a thimble; a mounting housing member including a first outer surface and a plurality of cavities formed in the first outer surface of the mounting housing member, each cavity having a shape complementary to a corresponding coil arrangement; wherein each coil assembly is configured to be removably mounted within a respective cavity, the prongs of the plurality of coil assemblies projecting outwardly from the first outer surface of the mounting housing member in a coil assembly mounting position, wherein the coil box is adapted to be removably mounted to the switching apparatus. The switching device includes: the device comprises a frame, a first guide wheel and a second guide wheel, wherein the frame comprises the first guide wheel and the second guide wheel; a mechanical actuation mechanism mounted in the frame; a coil box for a switching apparatus, the coil box being detachably mounted to a frame, wherein the coil box is mounted in a position in which a thimble of a coil device is operatively engaged with a mechanical actuating mechanism, and a first guide wheel and a second guide wheel are fitted in a first guide groove and a second guide groove of a rail member, respectively.

Description

Coil box for switching electric appliance and switching electric appliance

Technical Field

The utility model relates to a switching apparatus that is used for switching apparatus's coil box and includes coil box. And more particularly, to a coil box for a circuit breaker and a circuit breaker including the same.

Background

In the current switching electrical appliance products, such as circuit breakers, a closing trip coil device, an opening trip coil device, a closing locking coil device and a microswitch are all independently installed. Due to the small installation space, the assembly wiring and maintenance of these coil devices and micro switches are inconvenient and time-consuming. In addition, in current circuit breaker products, the coil device and its circuit board are usually integrated together. Therefore, when the coil device with the wiring board needs to be replaced, the coil device body needs to be replaced together with the wiring board, which is costly.

Therefore, there is a need for a switching electrical appliance that can reduce the assembly time of the trip coil device, the opening trip coil device, the closing latching coil device and the microswitch, improve the wiring efficiency and reduce the cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a coil box for switching apparatus and switching apparatus including coil box, it can overcome at least some in the above-mentioned defect among the prior art.

According to the utility model discloses an aspect provides a coil box for switching apparatus, include:

a plurality of coil units, each coil unit including a thimble projecting outwardly;

a mounting housing member including a first outer surface and a plurality of pockets formed in the first outer surface corresponding to the plurality of coil arrangements, each pocket of the plurality of pockets having a shape complementary to a respective coil arrangement;

wherein each coil assembly of the plurality of coil assemblies is configured to be removably mounted within a respective cavity of the plurality of cavities, the thimble of the coil assembly projecting outwardly from the first outer surface of the mounting housing member in a coil assembly mounting position in which the coil assembly is mounted within the respective cavity,

wherein the coil box is adapted to be detachably mounted to the switching apparatus.

Optionally, the coil box for a switching appliance further comprises one or more micro-switches, wherein the mounting housing part further comprises one or more recesses corresponding to the one or more micro-switches, wherein the one or more micro-switches are configured to be detachably mounted in the one or more recesses.

Optionally, the coil box for switching electrical appliances further includes one or more circuit boards electrically connected to the plurality of coil devices, the one or more circuit boards being configured to be detachably mounted to the mounting housing member and separated from the plurality of coil devices.

Optionally, in the coil device mounting position, the plurality of coil devices are parallel to each other, and the thimble of the plurality of coil devices is perpendicular to the first outer surface.

Alternatively, each of the plurality of coil devices has a cylindrical body and a top plate provided at a top of the cylindrical body, the thimble of the coil device protrudes from the top plate, the top plate has a protrusion extending beyond an outer contour of the cylindrical body, the protrusion has a through hole, and the coil device is detachably fixed to the mounting housing member by a bolt extending through the through hole of the protrusion.

Optionally, in the coil device mounting position, an outer surface of a top plate of the coil device is flush with the first outer surface of the mounting housing member, and a thimble of the coil device is perpendicular to the first outer surface.

Optionally, the mounting housing piece further comprises a second outer surface adjacent to the first outer surface, the coil box comprising a guide groove or guide wheel on the second outer surface.

Optionally, the mounting housing piece further comprises a second outer surface adjacent to the first outer surface,

the coil case further includes a rail member mounted on the second outer surface of the mounting case member, the rail member being formed with a first guide groove and a second guide groove,

the first guide slot has a first guide slot section, a second guide slot section and a third guide slot section, the first and third guide slot sections being parallel to the first outer surface and the second guide slot section extending in a direction inclined to the first outer surface and gradually away from the first outer surface,

the second guide groove is provided with a first guide groove section, a second guide groove section and a third guide groove section, and the first guide groove section, the second guide groove section and the third guide groove section of the second guide groove are respectively parallel to the first guide groove section, the second guide groove section and the third guide groove section of the first guide groove.

Optionally, the second outer surface is perpendicular to the first outer surface,

the first guide groove is further from the first outer surface than the second guide groove,

the lengths of the second and third guide groove sections of the first guide groove are respectively equal to those of the second and third guide groove sections of the second guide groove,

the length of the first guide groove section of the first guide groove is smaller than that of the first guide groove section of the second guide groove.

Optionally, the mounting housing piece further comprises a recess formed in the second outer surface, the recess having a shape corresponding to the rail piece for receiving the rail piece,

the recess is formed at a bottom thereof with a first guide groove and a second guide groove, the first guide groove and the second guide groove of the recess being aligned with the first guide groove and the second guide groove of the rail member, respectively, at a rail member mounting position where the rail member is mounted to the recess, and the first guide groove and the second guide groove of the recess having widths larger than the first guide groove and the second guide groove of the rail member, respectively.

Optionally, the coil box includes a rear cover mounted on the mounting housing piece, the rear cover including an opening and a plug mounted in the opening, the conductive and data cables inside the coil box each being connected to the plug.

According to the utility model discloses an on the other hand provides a switching device, include:

a frame;

a mechanical actuation mechanism mounted in the frame;

the coil box for the switching electric appliance as described above, the coil box being detachably mounted to the rack,

wherein the thimble of the coil assembly is operably engaged with the mechanical actuation mechanism in a coil-box-mounting position in which the coil box is mounted to the chassis.

a frame comprising a first guide wheel and a second guide wheel;

a mechanical actuation mechanism mounted in the frame;

wherein in a coil cassette mounting position where the coil cassette is mounted to the frame, the ejector pin of the coil arrangement is operatively engaged with the mechanical actuation mechanism, the first and second guide wheels fitting in the first and second guide grooves of the rail member, respectively.

Optionally, the mounting housing member includes a position-limiting portion extending outward from an outer surface of the mounting housing member, and the position-limiting portion of the mounting housing member is in contact with the rack in a coil cassette mounting position where the coil cassette is mounted to the rack.

Optionally, the mounting case member includes a connection portion and a hole provided in the connection portion, and the switching apparatus further includes a bolt penetrating the hole of the connection portion to mount the coil box to the rack.

Drawings

Fig. 1 illustrates an exploded view of a coil box for a circuit breaker according to some embodiments of the present invention;

FIGS. 2A-2G show enlarged views of the opening and closing coil assembly, closing and locking coil assembly, mounting housing member, micro-switch, circuit board, plug connector and guide member, respectively, of FIG. 1;

3A-3D illustrate the installation of the coil box 100 to the circuit breaker 200;

FIG. 3E shows a cross-sectional view taken along the A-A arrows in FIG. 3A;

fig. 4 shows an assembly diagram of the circuit breaker.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Fig. 1 illustrates an exploded view of a coil box 100 for a circuit breaker according to some embodiments of the present invention. The coil box 100 includes a mounting case member 110, a rail member 120, three opening and closing coil devices 130, a closing and locking coil device 140, two microswitches 150, a plurality of circuit boards 160, a rear cover 170, and a connector 172. The three switching-off and switching-on coil devices 130 include two switching-off coil devices and one switching-on coil device, wherein one of the two switching-off coil devices is a currently used switching-off coil device, and the other is a standby switching-off coil device.

As shown in fig. 2A, the opening and closing coil device 130 includes a cylindrical body 132, the cylindrical body 132 has a top plate 134, the top plate 134 has a protrusion 138 extending beyond an outer contour of the cylindrical body 132, and the protrusion 138 has a through hole 138 a. When the opening and closing coil device 130 is mounted to the mounting case member 110, a bolt may pass through the through hole 138a to fix the opening and closing coil device to the mounting case member 110. The top plate 134 further has a central hole, and the thimble 136 of the opening and closing coil device 130 protrudes from the central hole of the top plate 134. A lead (not shown) is further connected to the opening and closing coil device 130, and a thimble 136 of the opening and closing coil device 130 is extended or retracted outwardly or inwardly according to a signal received from the lead to actuate a corresponding mechanical actuating mechanism in the circuit breaker.

The closing and blocking coil device 140 shown in fig. 2B has a structure similar to that of the opening and closing coil device 130 shown in fig. 2A. The closing blocking coil device 140 comprises a cylindrical body 142, the cylindrical body 142 having a top plate 144, the top plate 144 having a protrusion 148 extending beyond an outer contour of the cylindrical body 142, the protrusion 148 having a through hole 148 a. When the closing blocking coil device 140 is mounted to the mounting housing member 110, a bolt may pass through the through hole 148a to fix the closing blocking coil device 140 to the mounting housing member 110. The top plate 144 also has a central aperture through which a needle 146 of the closing and blocking coil assembly 140 protrudes from the top plate 144. A lead (not shown) is also connected to the closing blocking coil device 140, and a thimble 146 of the closing blocking coil device 140 is extended outward or retracted inward according to a signal received from the lead to actuate a corresponding mechanical actuating mechanism in the circuit breaker.

As shown in fig. 1 and 2C, the mounting housing member 100 has a generally rectangular parallelepiped shape with a first outer surface 110a, a second outer surface 110b adjacent to the first outer surface 110a, and a third outer surface 110C adjacent to both the first outer surface 110a and the second outer surface 110 b. As shown, a plurality of cavities 112 corresponding to the opening and closing coil devices 130 and the closing and locking coil device 140 are formed in the first outer surface 110a of the mounting case member 100. Each cavity 112 corresponds to one of the opening and

closing coil devices

130 and 140, respectively, and has a shape substantially complementary to the corresponding coil device. In some embodiments, each cavity 112 extends from the first surface 110a in a direction perpendicular to the first surface 110 a. When the opening and closing coil device 130 and the closing and locking coil device 140 are located in the corresponding cavities 112 of the mounting housing member 110, the side walls of the cavities 112 cooperate with the side walls of the cylindrical body of the coil device, so that the cylindrical body of the coil device is accurately positioned with respect to the mounting housing member 110 in two degrees of freedom other than the axial direction of the coil device (i.e., in two directions perpendicular to the axial direction of the coil device). Mounting housing piece 110 also includes a step 112a at the exit of cavity 112 and a threaded bore 112b adjacent cavity 112. Due to the step 112a, when the opening and closing coil device 130 and the closing and locking coil device 140 are installed in the corresponding cavities 112, the top plate outer surface of the coil devices is flush with the first outer surface of the installation housing member 110. When the opening and closing coil devices 130 and the closing and locking coil devices 140 are mounted in the corresponding cavities 112, the through

holes

138a and 148a of the opening and closing coil devices 130 and the closing and locking coil devices 140 are aligned with the corresponding threaded holes in the mounting housing member 110. Bolts (not shown) are coupled to the screw holes 112b of the mounting case member 110 through the through

holes

138a and 148a of the opening and

closing coil devices

130 and 140. At this time, the

protrusions

138 and 148 of the opening and closing coil device 130 and the closing and locking coil device 140 abut against the step 112a of the mounting housing member 110, so that the opening and closing coil device 130 and the closing and locking coil device 140 are fixed and positioned in the axial direction thereof.

Therefore, when one of the opening and closing coil device 130 and the closing and locking coil device 140 is mounted to the mounting housing member 110, the coil device is only required to be aligned with the corresponding cavity 112, and the coil device is placed in the cavity 112 and fixed by a bolt, so that the coil device can be firmly fixed in the mounting housing member. When it is desired to replace the coil assembly in the mounting housing member 110, the coil assembly to be replaced is simply unscrewed and removed from the corresponding cavity in the mounting housing member. Then, the new coil device is aligned with the corresponding cavity 112, and the new coil device is placed in the cavity 112 and fixed by bolts, thereby completing the replacement of the coil device. Therefore, in the present invention, the installation and replacement of the opening/closing coil device 130 and the closing/locking coil device 140 are very convenient.

Fig. 2D shows an enlarged view of microswitch 150. The microswitch 150 has a microswitch body and a movable arm 152 extending outwardly from the microswitch body. A recess 118 corresponding to the micro switch 150 is provided in the mounting housing part 110. Recess 118 has a shape complementary to microswitch 150. In mounting the micro-switch 150 to the mounting housing part 110, it is only necessary to place the micro-switch 150 into the corresponding recess 118 and bolt it. Likewise, the micro switch 150 is also easy to replace and will not be described in detail.

Fig. 2E and 2F show enlarged views of the wiring board 160 and the plug 172, respectively. The circuit board 160 may be conveniently mounted to the mounting housing member 110 by, for example, bolts. As shown in fig. 1, the circuit board 160 and the opening and closing coil device 130 and the closing and locking coil device 140 are separately mounted to the mounting case member 110. Therefore, when the opening and closing coil device 130, the closing and locking coil device 140 or the circuit board is replaced, only the coil device or the circuit board can be replaced without replacing the coil device and the circuit board together, and the cost is saved. A plug 172, as shown in fig. 2F, may be mounted in an opening 174 in the back cover 170. The conductive and data lines that mount the coil assembly, the micro-switch and the circuit board within the housing member 110 are all connected to the connector 172 and then to the outside (circuit breaker) via the connector 172.

Fig. 2G shows an enlarged view of the track member 120. As shown in fig. 2G, the rail member 120 includes a plate-like body 122. The plate-like body 122 defines a first guide channel 124 and a second guide channel 126. The first channel 124 begins at the first side 122a of the plate-like body and has a first channel section 124a, a second channel section 124b and a third channel section 124 c. The channel first section 124a begins at the first side 122a of the plate-like body 122 and extends parallel to the second side 122b of the plate-like body 122. The guide groove second section 124b starts at the end of the guide groove first section 124a and extends in a direction inclined to the second side 122b of the plate-shaped body 122 and gradually away from the second side 122 b. The third channel section 124c begins at the end of the second channel section and extends parallel to the second side 122b of the plate-like body.

Second channel 126 also has similar first channel section 126a, second channel section 126b and third channel section 126 c. The channel first section 126a also begins at the first side 122a of the plate body 122, the channel second section 126b begins at the end of the channel first section 126a, and the channel third section 126c begins at the end of the channel second section. Guide channel first section 126a, guide channel second section 126b, and guide channel third section 126c are parallel to guide channel first section 124a, second section 124b, and third section 124c, respectively. The second guide slot 126 is closer to the second side 122b than the first guide slot 124, and the first guide slot segment 126a of the second guide slot 126 is longer in length than the first guide slot segment 124a of the first guide slot 124. The second and

third channel sections

126b, 126c are of equal length to the second and

third channel sections

124b, 124 c.

The plate-like body 122 has an outer shape corresponding to the recess 114 on the second surface 110b of the mounting case member 110 for being mounted into the recess 114 of the mounting case member 110, as shown in fig. 1 and 2C. When the rail member is installed, the rail member 120 is installed in the correct orientation to be prevented from being received in the recess 114 of the installation case member 100, and then the bolt is fastened to the screw hole 114c of the installation case member 100 through the hole 128 of the rail member 120. The bottom of the recess 114 of the mounting case member 110 also has two guide grooves, i.e., a first guide groove 114a and a second guide groove 114 b. The first guide groove 114a and the second guide groove 114b correspond to the first guide groove 124 and the second guide groove 126, respectively. The first and

second guide grooves

114a and 114b have the same shape as the first and

second guide grooves

124 and 126, respectively. That is, first channel 114a also has a first channel section, a second channel section, and a third channel section, and the first channel section, the second channel section, and the third channel section of first channel 114a each have the same length and extend in the same direction as the first channel section, the second channel section, and the third channel section of first channel 124, respectively. Second channel 114b also has a first channel section, a second channel section, and a third channel section, and the first channel section, the second channel section, and the third channel section of second channel 114b are each the same length and extend in the same direction as the first channel section, the second channel section, and the third channel section of second channel 126, respectively. Except that first and

second guide grooves

114a and 114b have a greater width than first and

second guide grooves

124 and 126. When the rail member 120 is installed in the recess 114 of the mounting housing member 110, the first guide groove 124 (narrower) is aligned with the first guide groove 114a (wider) to form an inverted T-shaped guide groove having a cross section that is narrow at the top and wide at the bottom, and the second guide groove 126 (narrower) is aligned with the second guide groove 114b (wider) to form an inverted T-shaped guide groove having a cross section that is narrow at the top and wide at the bottom (in the orientation of fig. 1 and 2C). When the rail member 120 is installed into the recess 114 of the mounting housing member 110, the guide channel first and

third sections

124a, 124c of the guide channel 124 are parallel to the first outer surface 110a, and the guide channel first and

third sections

126a, 126c of the guide channel 126 are parallel to the first outer surface 110 a.

Fig. 3A to 3D show a process of mounting the coil cassette 100 to the circuit breaker 200, and fig. 3E shows a sectional view taken along an a-a arrow in fig. 3A. Fig. 4 shows an assembled view of the circuit breaker 200. The circuit breaker 200 includes a chassis 202, a coil box 100 mounted on the chassis, and a mechanical actuation mechanism 210 below the coil box 100. As shown in fig. 4, the frame 202 includes a lower plate 204 and a side plate 206, and the lower plate 204 and the side plate 206 define a space for accommodating the coil box 100. The frame 202 is provided with

guide wheels

214, 216, the

guide wheels

214, 216 being connected to the side plates 206 by connecting columns. The guide pulleys 214, 216 are provided at positions corresponding to the

first guide grooves

124, 114a and the

second guide grooves

126, 114b of the coil box 100.

When the coil box 100 is mounted to the circuit breaker 200, the first and

second guide grooves

124, 114a, 126, 114b of the coil box 100 are first aligned with the guide pulleys 214, 216, respectively. The coil box 100 is then advanced in the rightward direction of fig. 3A. Guide wheel 216 first enters

second guide channels

126, 114b, and guide wheel 216 is now in a mating relationship with

second guide channels

126, 114b as shown in fig. 3E. As shown, the wider guide pulley 216 is located in the wider guide slot 114b, and the narrower guide pulley connection post is located in the narrower guide slot 126. Such a guide wheel and guide groove structure can securely hold the coil box 100 to the circuit breaker 200. In fig. 3E, there is a large gap from part to part for clarity. Those skilled in the art will appreciate that in actual mating relationships, the gap may be small or no gap. In fig. 3A, the first outer surface 110a of the mounting housing member 110 faces downward, and the ejector pins 136 and 146 of the opening and closing coil device 130 and the closing and locking coil device 140 protrude downward from the lower surface of the coil box 100.

The coil box 100 is further pushed in the rightward direction shown in fig. 3A so that the guide wheel 214 enters the

first guide grooves

124, 114 a. The engaging relationship between the guide wheel 214 and the

first guide grooves

124 and 114a is similar to that between the guide wheel 216 and the

second guide grooves

126 and 114b, and will not be described in detail herein. The coil box 100 continues to be advanced in the rightward direction such that the

guide wheels

214, 216 travel in the guide groove first segments of the first and

second guide grooves

124, 114a, 126, 114B, respectively, up to the position shown in fig. 3B. In the position shown in fig. 3B, guide

wheels

214, 216 reach the junction of the first and second sections of

guide channels

124, 114a, 126, 114B at the same time.

The

guide wheels

214, 216 then run in the inclined second section of the guide channel, during which the coil box 100 moves to the right while descending, as the second section of the guide channel is inclined, up to the position shown in fig. 3C. In the position shown in fig. 3C, guide

wheels

214, 216 reach the junction of the second and third channel segments of first and

second channels

124, 114a, 126, 114b simultaneously. The coil box 100 is then pushed further in the right direction, during which the

guide wheels

214, 216 travel in the third sections of the guide grooves of the

first guide grooves

124, 114a and the

second guide grooves

126, 114b, respectively, until the position shown in fig. 3D is reached. Those skilled in the art will appreciate that in this position, in the up and down direction of fig. 3A-3D and in and out of the page. The chassis of the circuit breaker 200 and the

guide wheels

214, 216 enable the position of the coil box relative to the circuit breaker 200 to be accurately determined. In the position shown in fig. 3D, the

guide wheels

214, 216 reach the end points of the first and

second guide grooves

124, 114a, 126, 114b, and the stopper portion 115 on the mounting case member 110 of the coil box 100 engages with the lower plate 204 of the circuit breaker 200 to accurately determine the position of the coil box 100 with respect to the circuit breaker 200 in the left-right direction of fig. 3A-3D. At this time, the coil box 100 is securely connected to the circuit breaker 200 by screwing bolts through the holes 116a on the connection portions 116 of the mounting case members 110 of the coil box 100 to the frame 202 of the circuit breaker 200.

As described above, when the coil box 100 is mounted to the circuit breaker 200, it is only necessary to align the first and

second guide grooves

124, 114a, 126, 114b of the coil box 100 with the

guide wheels

214, 216 of the circuit breaker, then push the coil box 100 until the position-limiting portion 115 of the mounting case member 110 of the coil box 100 is engaged with the lower plate 204 of the circuit breaker 200, and then pass bolts through the holes 116a of the connecting portion 116 of the mounting case member 110 of the coil box 100 and screw-connect to the housing 202 of the circuit breaker 200, so that the coil box 100 can be securely connected to the circuit breaker 200 while achieving accurate positioning of the coil box 100 (the mounting case member 110) with respect to the circuit breaker 200.

As described above, in the process of mounting the opening and closing coil device 130, the closing and locking coil device 140, and the micro switch to the mounting case member 110, the opening and closing coil device 130, the closing and locking coil device 140, and the micro switch can be precisely positioned with respect to the mounting case member 110. In the pull-in of the coil box 100 to the circuit breaker 200, the mounting housing member 110 is precisely positioned with respect to the circuit breaker 200. Therefore, after the coil box 100 is installed in the circuit breaker, the opening and closing coil device 130, the ejector pins 136 and 146 of the closing and closing coil device 140 and the corresponding mechanical actuating mechanisms in the circuit breaker 200 can be accurately positioned, and the movable arm 152 of the micro switch 150 and the corresponding rod shafts of the mechanical actuating mechanisms can be accurately positioned, so that the assembled circuit breaker 200 can work well.

As shown in fig. 2G, the second guide channel 126 of the mounting housing piece 110 has a longer guide channel first section 126a, while the guide channel third section 126c is relatively shorter. Only when the guide wheel travels in the third section of the guide groove, the movable arm of the micro switch descends to the working height of the ejector pins of the opening and closing coil device 130 and the closing and locking coil device 140 of the coil box 100. Because the third section of the guide groove is short, the interference which may occur between the thimbles of the opening and closing coil device 130 and the closing and locking coil device 140, and the movable arm of the micro switch and the mechanical actuating mechanism in the circuit breaker 200 in the installation process is effectively avoided.

It has been described above that the opening and closing coil device 130, the closing and closing coil device 140, and the micro switch can be conveniently and rapidly mounted to the mounting case member 110, and the coil box 100 can be conveniently and rapidly mounted to the circuit breaker 200. Similarly, it is also very convenient and fast to detach the coil box 100 from the circuit breaker 200 and to detach the opening and closing coil device 130, the closing and closing coil device 140, and the micro switch from the mounting case member 100.

In some embodiments as shown, the coil box 100 includes two opening coil devices, one closing coil device, one closing latching coil device 140, two micro switches 150. However, the utility model discloses be not limited to this, the utility model discloses can adopt the separating brake coil device, the combined floodgate coil device, combined floodgate shutting coil device, undervoltage coil device and the micro-gap switch of any suitable quantity.

In some embodiments as shown, after each coil assembly is placed in a respective cavity, a bolt is used to secure the coil assembly to the mounting housing member. However, the present invention is not limited thereto, and a plurality of bolts may be used to fix the coil device to the mounting case member, or other fastening means may be used to fix the coil device to the mounting case member.

In some embodiments as shown, the rail member has two narrower guide slots and the bottom of the recess of the mounting housing member has a corresponding two wider guide slots. When the rail member is mounted to the recess of the mounting case member, two inverted T-shaped guide grooves are formed for receiving guide wheels on a frame of the circuit breaker. However, the present invention is not limited thereto, and in some embodiments, the coil box may not have a guide groove. In some embodiments, the coil box may have only one guide slot, or more than two guide slots. In some embodiments, there may be no rail member, but only a channel formed in the mounting housing member. In some embodiments, the guide slot may have a different shape than the guide slot illustrated.

In some embodiments as shown, the coil box is secured to the frame of the circuit breaker with a bolt after the coil box is placed on the frame. However, the present invention is not limited thereto, and a plurality of bolts may be used to fix the coil box to the frame, or other fastening means may be used to fix the coil box to the frame.

In some embodiments shown in the drawings, the invention has been described in connection with circuit breakers, however the invention is not limited thereto, and the coil box of the invention may be used with any suitable other switching circuit, such as contactors, combined circuits.

The above description is only for the purpose of illustrating exemplary embodiments of the principles of the present invention, and is not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also within the scope of the invention.

Claims

1. A coil box for a switching appliance, characterized by comprising:

2. The coil box for a switching apparatus according to claim 1, further comprising one or more micro switches, wherein the mounting housing member further comprises one or more recesses corresponding to the one or more micro switches, wherein the one or more micro switches are configured to be removably mounted in the one or more recesses.

3. The coil box for switching electrical apparatus according to claim 1, further comprising one or more circuit boards electrically connected to the plurality of coil devices, the one or more circuit boards being configured to be detachably mounted to the mounting housing member and separated from the plurality of coil devices.

4. The coil box for switching electric appliances according to claim 1, wherein in the coil device mounting position, the plurality of coil devices are parallel to each other, and the thimble of the plurality of coil devices is perpendicular to the first outer surface.

5. The coil box for switching electric appliances according to claim 1, wherein each of the plurality of coil devices has a cylindrical body and a top plate provided at a top of the cylindrical body, the thimble of the coil device protrudes from the top plate, the top plate has a protrusion extending beyond an outer contour of the cylindrical body, the protrusion has a through hole, and the coil device is detachably fixed to the mounting housing member by a bolt extending through the through hole of the protrusion.

6. The coil box for switching electric appliances according to claim 5, wherein in the coil device mounting position, an outer surface of a top plate of the coil device is flush with the first outer surface of the mounting housing member, and a thimble of the coil device is perpendicular to the first outer surface.

7. A coil box for a switching apparatus according to any one of claims 1 to 6, wherein the mounting housing member further comprises a second outer surface adjacent to the first outer surface, the coil box comprising a guide groove or guide wheel on the second outer surface.

8. Coil box for switching electrical appliances according to any one of claims 1 to 6,

the mounting housing piece further includes a second outer surface adjacent the first outer surface,

9. Coil box for switching electrical appliances, according to claim 8,

the second outer surface is perpendicular to the first outer surface,

10. Coil box for switching electrical appliances, according to claim 9,

the mounting housing piece further comprising a recess formed in the second outer surface, the recess having a shape corresponding to the rail piece for receiving the rail piece,

11. Coil box for switching electrical appliances according to any one of claims 1 to 6,

the coil box includes a rear cover mounted on the mounting housing member, the rear cover including an opening and a plug mounted in the opening, the conductive and data cables inside the coil box both being connected to the plug.

12. A switching device, characterized by comprising:

a frame;

a mechanical actuation mechanism mounted in the frame;

coil box for a switching appliance according to any one of claims 1 to 11, which is detachably mounted to the rack,

13. A switching device, characterized by comprising:

a frame comprising a first guide wheel and a second guide wheel;

a mechanical actuation mechanism mounted in the frame;

coil box for a switching appliance according to any one of claims 8 to 10, which is detachably mounted to the rack,

14. The switching apparatus according to claim 13, wherein the mounting housing member includes a position-restricting portion extending outwardly from an outer surface of the mounting housing member, the position-restricting portion of the mounting housing member being in contact with the frame in a coil-box mounting position in which the coil box is mounted to the frame.

15. The switching apparatus according to claim 13, wherein the mounting housing member includes a connection portion and a hole provided in the connection portion, the switching apparatus further comprising a bolt passing through the hole of the connection portion to mount the coil box to the frame.

16. Switching device according to claim 13, characterized in that the switching device is a circuit breaker.