CN217691003U

CN217691003U - Terminal protection casing and switching device

Info

Publication number: CN217691003U
Application number: CN202220721763.5U
Authority: CN
Inventors: 胡慧宇; 方益; 郭德鑫; 黎佳财; 黄儒泽; 陈士军; 尹桂玲; 夏苗苗
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-10-28
Anticipated expiration: 2032-03-30

Abstract

The utility model relates to the field of low-voltage electrical appliances, in particular to a terminal protective cover, which comprises a protective cover first part and a protective cover second part, wherein the protective cover first part and the protective cover second part are integrally in L-shaped structures; the first part of the protective cover comprises a wiring panel opposite to the end part of the shell of the switching electric appliance; the wiring panel comprises at least one first knock-off plate, and the first knock-off plate is provided with a wiring port which is oppositely matched with a wiring terminal of the switching device and through which a lead passes; the terminal protection cover can be suitable for the passing of wires with different diameters. The utility model also provides an include the switching apparatus of terminal protection casing, terminal protection casing make switching apparatus satisfy the wiring demand of different diameter wires.

Description

Terminal protection casing and switching device

Technical Field

The utility model relates to a low voltage apparatus field, concretely relates to terminal protection casing and one kind include the switching apparatus of terminal protection casing.

Background

A molded case circuit breaker, which is a type of circuit breaker commonly used, has a case made of a plastic insulator to separate conductors of respective phases and to separate the conductors from a ground metal. The terminal protection cover is installed at the wiring end (wire inlet end and wire outlet end) of the molded case circuit breaker so as to prevent the reliability of the performance of the whole power supply system from being influenced by the overflow of electric arcs generated in the working process of the circuit breaker, and the terminal protection cover can also improve the product protection, the phase insulation performance, the assembly efficiency and the integral harmony of the appearance.

The prior terminal protective cover has the following problems:

1. the wiring of wires with various diameters cannot be compatible;

2. the terminal shield is cumbersome to assemble with the housing of the circuit breaker.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a terminal protective cover which is suitable for the passing of wires with different diameters; the terminal protection cover enables the switching electric appliance to meet wiring requirements of wires with different diameters.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a terminal protective cover comprises a protective cover first part and a protective cover second part, wherein the protective cover first part and the protective cover second part are integrally in an L-shaped structure; the first part of the protective cover comprises a wiring panel opposite to the end part of the shell of the switching electric appliance; the wiring panel comprises at least one first knocking-down plate, and the first knocking-down plate is provided with a wiring port for a lead to pass through.

Preferably, the second portion of the protective cover comprises at least one second knock-out plate, the second knock-out plate cooperating opposite a binding screw of the binding post.

Preferably, the first part of the protective cover further comprises protective cover side plates, and the two groups of protective cover side plates and the second part of the protective cover are positioned on the same side of the wiring panel and are respectively connected with three continuously arranged side edges of the wiring panel in a bending way; the wiring panel comprises a plurality of first knocking-down plates, partition plates are arranged between every two adjacent first knocking-down plates, one end of each partition plate is connected with the second portion of the protective cover, the partition plates are matched with the shell through sliding fit structures, each sliding fit structure comprises a sliding rail and a sliding groove, one of the sliding rails is arranged on the partition plate, the other one of the sliding rails is arranged on the shell, and the sliding rails can only be inserted into or pulled out of one end of the sliding grooves.

Preferably, the terminal protective cover is further connected with the shell through at least one group of buckle structures, each buckle structure comprises a clamping table and a clamping hook, one buckle structure is arranged on the terminal protective cover, and the other buckle structure is arranged on the shell; the protection casing second portion prevents the terminal protection casing along the direction that the slide rail inserted the spout with the spacing cooperation of casing, and buckle structure prevents that the slide rail from extracting from the spout.

Preferably, the pothook is the protection casing pothook that sets up in protection casing second portion, and the ka tai is the casing ka tai that sets up on the casing, and the casing is including the terminal chamber that is used for holding binding post, and the casing ka tai sets up on the lateral wall of terminal chamber one end.

Preferably, the protection cover second part further comprises a protection cover positioning rib, and the protection cover positioning rib is inserted into the terminal cavity and is in limit fit with the side wall of the terminal cavity.

Preferably, the slide rail is a protective cover slide rail arranged on the partition plate, the slide groove is a shell slide groove arranged on the shell, and the shell slide groove is arranged on a shell partition plate of the shell, which is positioned between adjacent wiring terminals.

Preferably, the wiring panel is further provided with exhaust grids, the exhaust grids and the wiring terminals are arranged in a one-to-one mode, and each exhaust grid and one first knocking-off plate are arranged in parallel correspondingly.

Preferably, the wiring panel is provided with a U-shaped second wiring port, the first knocking-down plate is arranged in the second wiring port, and the side edge of the first knocking-down plate is connected with the side wall of the second wiring port through a plurality of connecting ribs distributed at intervals to block the second wiring port.

The utility model also provides a switching device, it includes the foretell terminal protection casing of arbitrary one item.

The utility model discloses terminal protection casing, its wiring panel's first knockout plate has preset the wiring mouth, allows the wire of certain diameter (for example 8 square wires) to pass, and when needing to insert the wire of bigger diameter, the accessible knocks the mode expansion wiring mouth of first knockout plate to the application scene that makes the terminal protection casing is more extensive.

In addition, the terminal protection cover and the shell are assembled and limited through the sliding fit structure, the buckle structure and the matching of the second part of the protection cover and the shell, and the assembly is simple, convenient, rapid and reliable.

The utility model discloses switching device, it includes terminal protection casing, terminal protection casing make switching device satisfy the wiring demand of different diameter wires.

Drawings

Fig. 1 is a schematic perspective view of the switching device of the present invention, showing the assembly relationship between the housing and the terminal protection cover;

fig. 2 is a schematic side projection view of the switching device of the present invention;

fig. 3 is a schematic perspective view of the terminal protection cover of the present invention at a viewing angle;

fig. 4 is a schematic perspective view of the terminal protection cover according to another view angle;

fig. 5 is a schematic view of a partial structure of the switching device with the terminal protection cover removed;

fig. 6 is a schematic view of the assembly structure of the terminal protection cover and the housing of the present invention, showing the structure of the buckle structure.

Detailed Description

The following describes the embodiments of the terminal protection cover and the switching device according to the present invention with reference to the embodiments shown in fig. 1 to 6. The utility model discloses a terminal protection casing and switching device are not limited to the description of following embodiment.

The utility model discloses a terminal protective cover, which comprises a protective cover first part 2-1 and a protective cover second part 2-0, wherein the protective cover first part 2-1 and the protective cover second part 2-0 are integrally in L-shaped structures; the first protective cover part 2-1 comprises a wiring panel 2-10 opposite to the end part of the shell 1 of the switching electric appliance; the wiring panel 2-10 comprises at least one first knock-out plate 2-21, and the first knock-out plate 2-21 is provided with a wiring port 2-20 which is oppositely matched with the wiring terminal 3 of the switching device and through which a wire passes.

The utility model discloses terminal protection casing, wiring mouth 2-20 has been preset to its wiring panel 2-10's first knockout plate 2-21, allows the wire of certain diameter (for example 8 square wires) to pass, and when needing to insert the wire of bigger diameter, the wiring mouth is enlarged to the mode that the accessible knocked down first knockout plate 2-21 to make the application scene of terminal protection casing more extensive.

As shown in fig. 1-4 and 6, it is an embodiment of the terminal protection cover of the present invention.

In the switching apparatus is preferably applied to this embodiment terminal protection casing, switching apparatus include with terminal protection casing complex casing 1, all be equipped with binding post 3 at casing 1's both ends, the binding post 3 at both ends can regard as inlet wire binding post and the binding post of being qualified for the next round of competitions respectively, respectively is equipped with a terminal protection casing at casing 1's both ends, the terminal protection casing covers binding post 3, and with casing 1 fixed connection. Further, the switching device is a molded case circuit breaker.

Preferably, as shown in fig. 1 and 5, the housing 1 includes a housing cover 1-0 and a base 1-1 that are fastened together, one end of the card cover 1-0 and one end of the base 1-1 are engaged with one shield 2, and the other end thereof is engaged with the other shield 2.

As shown in fig. 2-4, the terminal protection cover of the present embodiment includes a first protection cover portion 2-1 and a second protection cover portion 2-0, and the first protection cover portion 2-1 and the second protection cover portion 2-0 are integrally L-shaped; the first part 2-1 of the protective cover is arranged corresponding to the side wall of the end part of the shell 1, the first part 2-1 of the protective cover is provided with a wiring port 2-20 for a lead to pass through, and the second part 2-0 of the protective cover is arranged corresponding to the top wall of the shell 1. The first part 2-1 of the protective cover comprises a wiring panel 2-10 opposite to the end part of the shell 1, the wiring panel 2-10 comprises at least one first knock-off plate 2-21, and the first knock-off plate 2-21 is provided with a wiring port 2-20 which is oppositely matched with a wiring terminal 3 of the switching device and is used for a lead to pass through.

Preferably, as shown in fig. 2 to 4, the wire connection ports 2 to 10 are U-shaped openings.

Preferably, as shown in fig. 2 to 4, the first knock-out plate 2 to 21 is a U-shaped structure, and a dotted line type gap 2 to 22 is formed between the first knock-out plate and the rest of the terminal board 2 to 10, the dotted line type gap 2 to 22 is a U-shaped structure as a whole, and the first knock-out plate 2 to 21 is connected with the rest of the terminal board 2 to 10 through a plurality of connecting ribs distributed at intervals. Specifically, a U-shaped second wire connecting port is formed in the wiring panel 2-10, the first knockout plate 2-21 is arranged in the second wire connecting port, the side edge of the first knockout plate 2-21 is connected with the side wall of the second wire connecting port through a plurality of connecting ribs distributed at intervals to plug the second wire connecting port, the side wall of the second wire connecting port and the side edge of the first knockout plate 2-21 form the virtual gap 2-22, so that the second wire connecting port can be knocked off, and after the first knockout plate 2-21 is knocked off, the second wire connecting port forms a new larger wire connecting port which can be connected with a wire with a larger diameter.

As shown in fig. 3-4, the second part 2-0 of the shield comprises at least one second knock-out plate 2-3, the second knock-out plate 2-3 being fitted against a binding screw of the binding post 3. The top wall of the shell 1 is provided with a screw hole for screwing a wiring screw, the second knock-down plate 2-3 corresponds to the screw hole, and the screw hole can be enlarged by knocking down the second knock-down plate 2-3. As shown in fig. 1, the plurality of second knockout plates 2-3 are disposed on the sides of the corresponding screw holes of the second portion 2-0 of the shield.

Specifically, as shown in fig. 2 to 4, the switching device of this embodiment is a three-phase switching device, the incoming line end or the outgoing line end of the switching device includes three sets of wiring terminals 3 arranged side by side at intervals, the wiring panel 2 to 10 includes three first knock-off plates 2 to 21 arranged side by side at intervals to be respectively matched with the three wiring terminals 3 of the incoming line end or the outgoing line end of the switching device relatively, and the second portion 2 to 0 of the protective cover includes three second knock-off plates 2 to 3 arranged side by side at intervals to be respectively matched with the wiring screws of the three wiring terminals 3 of the incoming line end or the outgoing line end of the switching device relatively.

As shown in fig. 3-4, the first portion 2-1 of the shield further includes shield side plates 2-11, and the two sets of shield side plates 2-11 and the second portion 2-0 of the shield are located on the same side of the terminal board 2-10 and are respectively connected with three continuously arranged side edges of the terminal board 2-10 in a bent manner; the wiring panel 2-10 comprises a plurality of first knocking-down plates 2-21, partition plates 2-6 are arranged between the adjacent first knocking-down plates 2-21, one ends of the partition plates 2-6 are connected with the second part 2-0 of the protective cover, the partition plates 2-6 are matched with the shell 1 through a sliding matching structure, the sliding matching structure comprises sliding rails and sliding grooves, one sliding rail is arranged on the partition plates 2-6, the other sliding rail is arranged on the shell 1, and the sliding rails can be inserted into or pulled out of one ends of the sliding grooves.

Preferably, the slide rails are shield slide rails provided on the partition plates 2 to 6, as shown in fig. 4, and the slide grooves are housing slide grooves provided on the housing 1, as shown in fig. 5. Further, as shown in fig. 5, the sliding grooves are provided on housing sliding grooves 1-12 of the housing 1, and the housing sliding grooves 1-12 are provided on housing partitions 1-11 of the housing 1 between adjacent terminal blocks 3. The partition plates 2-6 are matched with the shell partition plates 1-11 to separate adjacent phase poles of the switch electric appliance, so that the insulating property of the switch electric appliance is improved.

Preferably, as shown in fig. 4 and 6, the slide rail of the shield is a cylindrical slide rail, and the outer diameter of the cylindrical slide rail is greater than the width of the partition plate 2-6; as shown in fig. 5-6, the casing chutes 1-12 are cylindrical chutes, the inner diameters of the cylindrical chutes are matched with the cylindrical slide rails, openings matched with the partition plates 2-6 and communicated with the cylindrical chutes are formed in the side walls of the cylindrical chutes, and the inner diameters of the cylindrical chutes are larger than the widths of the openings.

As shown in fig. 4-6, the terminal protection cover is further connected to the housing 1 through at least one set of fastening structures, each fastening structure includes a fastening platform and a fastening hook, one is disposed on the terminal protection cover, and the other is disposed on the housing 1; the second part 2-0 of the protective cover is in limit fit with the shell 1, the terminal protective cover is prevented from sliding along the direction that the sliding rail is inserted into the sliding groove, and the sliding rail is prevented from being pulled out of the sliding groove through the buckling structure. The buckle structure is located inside the terminal protective cover and the shell 1, and is favorable for improving the attractiveness of the switching device.

Preferably, as shown in fig. 4 and 6, the hooks are shield hooks 2-5 arranged on the second portion 2-0 of the shield, the latch is a housing latch 1-13 arranged on the housing 1, the housing 1 comprises a terminal cavity 1-10 for accommodating the terminal 3, and the housing latch 1-13 is arranged on the side wall of one end of the terminal cavity 1-10.

Preferably, the hook is a half arrow-shaped hook.

Specifically, as shown in fig. 4-6, when the terminal protection cover of this embodiment is assembled, the protection cover slide rail of the terminal protection cover is inserted into the casing slide groove 1-12 from one end thereof, and slides to the case hook 2-5 to be in snap fit with the case catch 1-13, and the two are collided to generate a click sound to prompt an operator that the terminal protection cover is installed in place, and at this time, the second portion 2-0 of the protection cover is also in limit fit with the case 1.

As shown in fig. 2-4, the connection panel 2-10 is further provided with vent grills 2-4, the vent grills 2-4 and the connection terminals 3 are arranged in a one-to-one manner, and each vent grill 2-4 is arranged side by side corresponding to one first knock-off plate 2-21.

As shown in fig. 2-3, the connection panel 2-10 is further provided with a partition board slot, and the partition board is inserted into the partition board slot to separate the adjacent first knockout plate 2-21 and the adjacent exhaust grill 2-4.

The utility model discloses still relate to a switching apparatus, it includes the terminal protection casing, terminal protection casing make switching apparatus satisfy the wiring demand of different diameter wires.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A terminal protective cover comprises a protective cover first part (2-1) and a protective cover second part (2-0), wherein the protective cover first part (2-1) and the protective cover second part (2-0) are of an L-shaped structure as a whole; the protective cover first part (2-1) comprises a wiring panel (2-10) opposite to the end of the shell (1) of the switch electric appliance; the method is characterized in that: the wiring panel (2-10) comprises at least one first knock-out plate (2-21), and the first knock-out plate (2-21) is provided with a wiring port (2-20) for a lead to pass through.

2. The terminal shield of claim 1, wherein: the second part (2-0) of the protective cover comprises at least one second knock-off plate (2-3), and the second knock-off plate (2-3) is oppositely matched with a wiring screw of the wiring terminal (3).

3. The terminal shield of claim 1, wherein: the first protection cover part (2-1) further comprises protection cover side plates (2-11), and the two groups of protection cover side plates (2-11) and the second protection cover part (2-0) are positioned on the same side of the wiring panel (2-10) and are respectively connected with three continuously arranged side edges of the wiring panel (2-10) in a bending way; the wiring panel (2-10) comprises a plurality of first knockout plates (2-21), partition plates (2-6) are arranged between the adjacent first knockout plates (2-21), one ends of the partition plates (2-6) are connected with the second part (2-0) of the protective cover, the partition plates (2-6) are matched with the shell (1) through a sliding fit structure, the sliding fit structure comprises a sliding rail and a sliding groove, one of the sliding fit structure is arranged on the partition plates (2-6), the other one of the sliding fit structure is arranged on the shell (1), and the sliding rail can only be inserted into or pulled out of one end of the sliding groove.

4. The terminal shield of claim 3, wherein: the terminal protective cover is also connected with the shell (1) through at least one group of buckle structures, each buckle structure comprises a clamping table and a clamping hook, one buckle structure is arranged on the terminal protective cover, and the other buckle structure is arranged on the shell (1); the second part (2-0) of the protective cover is in limit fit with the shell (1) to prevent the terminal protective cover from sliding along the direction that the sliding rail is inserted into the sliding groove, and the clamping structure prevents the sliding rail from being pulled out of the sliding groove.

5. The terminal shield of claim 4, wherein: the protective cover clamping hook is characterized in that the clamping hook is a protective cover clamping hook (2-5) arranged on the second portion (2-0) of the protective cover, the clamping table is a shell clamping table (1-13) arranged on the shell (1), the shell (1) comprises a terminal cavity (1-10) used for containing the wiring terminal (3), and the shell clamping table (1-13) is arranged on the side wall of one end of the terminal cavity (1-10).

6. The terminal shield of claim 5, wherein: the protective cover second part (2-0) further comprises a protective cover positioning rib (2-7), and the protective cover positioning rib (2-7) is inserted into the end cavity (1-10) and is in limit fit with the side wall of the end cavity.

7. The terminal guard of claim 3, wherein: the sliding rails are protective cover sliding rails arranged on the partition plates (2-6), the sliding grooves are shell sliding grooves (1-12) arranged on the shell (1), and the shell sliding grooves (1-12) are arranged on shell partition plates (1-11) of the shell (1) between adjacent wiring terminals (3).

8. The terminal shield of claim 1, wherein: the wiring panel (2-10) is further provided with exhaust grids (2-4), the exhaust grids (2-4) and the wiring terminals (3) are arranged in a one-to-one mode, and each exhaust grid (2-4) corresponds to one first knock-off plate (2-21) and is arranged side by side.

9. The terminal shield of claim 1, wherein: the wiring panel (2-10) is provided with a U-shaped second wiring port, the first knocking-down plate (2-21) is arranged in the second wiring port, and the side edge of the first knocking-down plate (2-21) is connected with the side wall of the second wiring port through a plurality of connecting ribs distributed at intervals to block the second wiring port.

10. A switching apparatus comprising a terminal guard according to any one of claims 1 to 9.