Fence type terminal block

Abstract

The utility model relates to the terminal block field, and discloses a fence type wiring terminal block, comprising an insulation housing, a screw assembly and a metal terminal, the insulation housing is provided with a plugging cavity along a plugging direction, the metal terminal comprises a connection portion and a cooperation end, a first side of the insulation housing is convexly provided with a fence portion corresponding to the periphery of the plugging cavity, and the first side of the insulation housing is provided with a screw assembly. A protection space is defined by the enclosure parts, and the metal terminals and the screw assemblies are located in the enclosure parts. The fence type wiring terminal block further comprises a dustproof part which is detachably connected to the fence part and is used for shielding the protection space. Through cooperative use of the enclosure part and the dustproof part, after the metal terminal and the screw assembly are installed in the protection space, the dustproof part is matched with the enclosure part to shield the periphery of the metal terminal, the metal terminal is prevented from being directly exposed in the air environment, and therefore the situation that dust makes contact with the metal terminal and is accumulated on the metal terminal is effectively reduced; therefore, the service life and the use safety of the metal terminal are improved.

Description

Technical Field

[0001] The utility model relates to the field of terminal blocks, and particularly to a fence-type terminal block. Background Art

[0002] As a kind of wiring terminal, the terminal block is an electronic component used for circuit connection. In recent years, with the increasing degree of industrial automation, the terminal block is used to connect various wires such as power lines and signal lines in electrical equipment such as automobiles and working machinery.

[0003] The fence-type terminal block is widely used in various intelligent electric energy meters and distribution terminals due to its reliability, safety and large current-carrying capacity, and its reliability directly relates to the safety performance of the product. The terminals of the traditional fence-type terminal block are connected to the wires through the cooperation of screw components. Therefore, the screw components and some terminals are directly exposed to the environment and are easily affected by pollutants such as dust: the dust accumulates on the surface and gaps of the fence-type terminal block, which will hinder heat dissipation, cause the temperature to rise, and affect the stability and life of electronic components; the tiny particles in the dust may enter the contact points of the terminal block, resulting in poor contact or short circuit, affecting the reliability and safety of electrical connections. Summary of the Utility Model

[0004] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the utility model is: to provide a fence-type terminal block to solve the problem that the screw components and the terminals cooperating with them are easily affected by dust when exposed to the environment.

[0005] To solve the above technical problem, a technical solution adopted by the utility model is: to provide a fence-type terminal block including an insulating housing, a screw component and a metal terminal. The insulating housing is provided with an insertion cavity penetrating through the first side and the second side of the insulating body along an insertion direction. The metal terminal includes a connecting portion and a cooperating end inserted into the insertion cavity from the first side and passing through the second side to be connected to a conductive element. A surrounding portion is convexly provided on the first side of the insulating housing corresponding to the periphery of the insertion cavity. A protection space is formed by surrounding between the surrounding portions. The metal terminal and the screw component are both located within the surrounding portion. The fence-type terminal block further includes a dust-proof portion detachably connected to the surrounding portion and used for shielding the protection space, so that the cooperation between the surrounding portion and the dust-proof portion can protect the metal terminal while shielding dust, thereby effectively reducing the entry of dust into the protection space, and at the same time, the protection portion is convenient for disassembly and installation.

[0006] Further, a screw-threaded portion penetrating through the connecting portion along the insertion direction is provided on the connecting portion. The screw component includes a pressing plate supported on the connecting portion and a screw screwed on the pressing plate and the screw-threaded portion, so that the screw can be fixed on the connecting portion without using a nut or a screw cap, effectively improving the assembly efficiency.

[0007] Furthermore, the mating end includes a first pin and a second pin integrally bent from opposite sides of the connection part respectively. The insertion cavity includes a first insertion cavity and a second insertion cavity that penetrate the first side along the insertion direction at positions corresponding to the first pin and the second pin respectively, and a first insertion opening and a second insertion opening that penetrate the second side along the insertion direction are respectively provided on the first insertion cavity and the second insertion cavity. The first pin is inserted into the first insertion cavity and extends to the outside of the second side through the first insertion opening, and the second pin is inserted into the second insertion cavity and extends to the outside of the second side through the second insertion opening, so as to realize a double-row terminal structure through integral molding, making the device more reliable and reducing the production process.

[0008] Furthermore, the first pin has a first insertion section extending along the insertion direction from the connection part to sequentially pass through the first insertion cavity and the first insertion opening, and a first mating section bent and extended from the first insertion section for connecting with a conductive element; the second pin has a second insertion section extending along the insertion direction from the connection part to sequentially pass through the second insertion cavity and the second insertion opening, and a second mating section bent and extended in the same direction as the first mating section from the second insertion section for connecting with a conductive element, thus facilitating the connection between the first pin, the second pin and the conductive element.

[0009] Furthermore, barbs for tightly fitting with the inner walls of the first insertion cavity and the second insertion cavity are respectively convexly provided on the side walls of the first insertion section and the second insertion section, so that the first insertion section and the second insertion section can be firmly connected to the insulating housing, improving the fastening property and stability and making the terminal conduct electricity more stably.

[0010] Furthermore, both the first mating section and the second mating section have narrow ends that facilitate connection with the conductive element, so as to facilitate connection with the conductive element.

[0011] Furthermore, the dust-proof part has a top plate covering the enclosure part and side plates bent and extended from opposite sides of the top plate to surround the side surface of the enclosure part. A sliding space is formed between the top plate and the two side plates. The dust-proof part is slidably covered on the enclosure part through the sliding space, which not only ensures the stable connection between the dust-proof part and the enclosure part, but also can block the enclosure part from three sides, effectively reducing the possibility of dust accumulation on the metal terminal and improving the use safety of the terminal.

[0012] Furthermore, an avoidance groove is concavely provided on the top plate toward the side away from the enclosure part, and support edges for contacting the enclosure part are provided on both sides of the top plate where the avoidance groove is located, so that the enclosure part and the top plate support each other, improving the stability of the dust-proof part and having a gap between the enclosure part and the dust-proof part for heat dissipation.

[0013] Further, a convex bump for tightly pressing against the enclosure part is convexly provided on the inner side wall of the side plate, so that after the dust-proof part is covered on the enclosure part, it tightly presses against the enclosure part, improving the connection firmness of the dust-proof part.

[0014] Further, a card slot for the convex bump to be clamped therein is provided at a position on the enclosure part corresponding to the convex bump, so that the convex bump is clamped into the card slot, effectively preventing the dust-proof part from falling off.

[0015] The fence-type terminal block of the present utility model has at least the following beneficial effects: by the combined use of the enclosure part and the dust-proof part, after the metal terminal and the screw assembly are installed in the protection space, the dust-proof part cooperates with the enclosure part to shield around the metal terminal, avoiding the metal terminal from being directly exposed to the air environment, thereby effectively reducing the contact and accumulation of dust on the metal terminal, and thus improving the service life and use safety of the metal terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application, and constitute a part of the present application. The illustrative embodiments and descriptions thereof of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0017] Figure 1 is a schematic structural diagram of the fence-type terminal block of the present utility model;

[0018] Figure 2 is a side cross-sectional view of the fence-type terminal block of the present utility model;

[0019] Figure 3 is an exploded view of the insulating housing and the dust-proof part of the present utility model;

[0020] Figure 4 is Figure 3 an enlarged view of part A shown;

[0021] Figure 5 is a schematic diagram of the mating structure of the metal terminal and the screw assembly of the present utility model.

[0022] The meanings of the reference numerals in the drawings are as follows:

[0023] Insulating housing - 1; First side - 11; Second side - 12; Insertion cavity - 13; First insertion cavity - 131; Second insertion cavity - 132; First insertion interface - 133; Second insertion interface - 134; Connection cavity - 14; Enclosure part - 15; Support surface - 16; Card slot - 17; Screw assembly - 2; Pressure plate - 21; Screw - 22; Metal terminal - 3; Connection part - 31; Threaded part - 311; Fitting end - 32; First pin - 321; First insertion section - 321a; First fitting section - 321b; Second pin - 322; Second insertion section - 322a; Second fitting section - 322b; Barbed hook - 323; Narrow end - 32a; Dust - proof part - 4; Top plate - 41; Side plate - 42; Avoidance groove - 43; Sliding space - 44; Convex hull - 45; Support edge - 46. Detailed implementation mode

[0024] The present utility model will be further described below with reference to the accompanying drawings.

[0025] As Figures 1 to 5 shown, the fence - type wiring terminal block of the present utility model includes an insulating housing 1 having a first side 11 and a second side 12, a screw assembly 2, a metal terminal 3, and a dust - proof part 4 detachably connected to the insulating housing 1. The metal terminal 3 is inserted into the insulating housing 1 and one end extends out of the insulating housing 1. The screw assembly 2 is screwed on the metal terminal 3 and cooperates with the metal terminal 3 to fix conductive elements such as wires. The end of the metal terminal 3 extending out of the insulating housing 1 is connected to other conductive elements such as a docking electrical connector or a circuit board, and conduction is achieved after power - on. The dust - proof part 4 encloses and protects the protection space to block the metal terminal 3 and reduce the possibility of dust entering the protection space, thereby improving the service life of the terminal.

[0026] In the content defined by this embodiment, the insulating housing 1 is made of an insulating material such as plastic, and the insulating housing 1 is integrally square in structure. In this embodiment, the height direction of the insulating housing 1 is defined as the insertion direction, and the two opposite sides of the insulating housing 1 along the length direction are respectively defined as the first side 11 and the second side 12. An insertion cavity 13 is formed in the insulating housing 1 along the insertion direction, penetrating through the first side 11 and the second side 12 of the insulating housing 1, so as to facilitate the insertion of the metal terminal 3 therein. Among them, the insertion cavity 13 includes a first insertion cavity 131 and a second insertion cavity 132 that are spaced apart and parallel to each other. The first insertion cavity 131 and the second insertion cavity 132 are both arranged according to the structure of the metal terminal 3, and both the first insertion cavity 131 and the second insertion cavity 132 penetrate through the first side 11 of the insulating housing 1 along the insertion direction. A first insertion opening 133 that penetrates through the second side 12 along the insertion direction is provided on the first insertion cavity 131, and a second insertion opening 134 that penetrates through the second side 12 along the insertion direction is provided on the second insertion cavity 132. One side of the metal terminal 3 passes through the first insertion cavity 131 and the first insertion opening 133 in sequence from the first side 11 to penetrate out of the second side 12, and the other side of the metal terminal 3 passes through the second insertion cavity 132 and the second insertion opening 134 in sequence from the first side 11 to penetrate out of the second side 12, thereby completing the installation of the metal terminal 3 and enabling the metal terminal 3 to be connected to the conductive element. A connection cavity 14 is formed in the insulating housing 1, penetrating through the first side 11 and located between the first insertion cavity 131 and the second insertion cavity 132. The connection cavity 14 communicates with the first insertion cavity 131 and the second insertion cavity 132 respectively, so that when the screw assembly 2 is installed on the metal terminal 3 and the metal terminal 3 is installed on the insulating housing 1, it penetrates into the connection cavity 14 to prevent the screw assembly 2 from affecting the installation of the metal terminal 3. In this embodiment, a surrounding portion 15 is convexly provided at the peripheral position of the insertion cavity 13 on the first side 11 of the insulating housing 1. A protective space is formed by enclosing between the surrounding portions 15. The insertion cavity 13 and the connection cavity 14 are both located in the protective space. When the metal terminal 3 is installed on the insulating housing 1, both the metal terminal 3 and the screw assembly 2 are located within the surrounding portion 15. In this embodiment, a supporting surface 16 for supporting the metal terminal 3 when the metal terminal 3 is installed on the insulating housing 1 is provided within the protective space and on the first side 11 of the insulating housing 1, so as to improve the stability between the metal terminal 3 and the insulating housing 1. In this embodiment, the surrounding portion 15 includes two surrounding pieces that are respectively arranged on both sides of the insertion cavity 13 along the length direction of the insulating housing 1 relative to the insertion cavity 13, and a through hole is formed between the two surrounding pieces along the width direction of the insulating housing 1, so as to facilitate the disassembly of the screw assembly 2 for installing the wire and facilitate heat dissipation. It should be noted that the insertion cavities 13 can be arranged at intervals along the length direction of the insulating housing 1 in multiple numbers, and the number of corresponding metal terminals 3 is the same as that, and surrounding portions 15 are provided on both sides of each insertion cavity 13, and there is only one surrounding portion 15 between two adjacent insertion cavities 13.

[0027] In this embodiment, the screw assembly 2 includes a pressing plate 21 for being disposed in contact with the metal terminal 3 and a screw 22 screwed on the pressing plate 21. The pressing plate 21 has a square sheet-like structure and is disposed in contact with the metal terminal 3 parallel to the supporting surface 16. The screw 22 movably passes through the center of the pressing plate 21 along the insertion direction to be screwed on the metal terminal 3, thereby connecting to the metal terminal 3. In use, the wire is wound or placed on the screw 22 and is located between the pressing plate 21 and the metal terminal 3. Then, the screw 22 is rotated to press the pressing plate 21 against the metal terminal 3, thereby clamping the wire and completing the connection between the metal terminal 3 and the wire.

[0028] In this embodiment, the metal terminal 3 includes a connecting portion 31 and a mating end 32 that is inserted into the insertion cavity 13 from the first side 11 and passes out of the second side 12 to connect to the conductive element. The pressing plate 21 is disposed in contact with the connecting portion 31. The screw 22 is screwed on the connecting portion 31 to cooperate with the pressing plate 21 and the connecting portion 31 to clamp the wire. The mating end 32 is respectively disposed in the first insertion cavity 131 and the second insertion cavity 132, so as to facilitate the connection between the metal terminal 3 and the insulating housing 1.

[0029] Among the contents defined in this embodiment, the connecting portion 31 has a square sheet-like structure and is arranged parallel to the pressing plate 21. Both the connecting portion 31 and the pressing plate 21 can movably pass through the protection space. The length of the connecting portion 31 is greater than the length of the connecting cavity 14, so that the connecting portion 31 can be supported on the supporting surface 16, enabling mutual support between the connecting portion 31 and the insulating housing 1 and improving stability. At the center position of one side surface of the connecting portion 31 facing the second side 12, a screwing portion 311 is convexly formed. A screw hole penetrating through the screwing portion 311 itself and the connecting portion 31 itself along the insertion direction is formed on the screwing portion 311 by stamping. The screw 22 is screwed in the screw hole, so that the connection between the screw 22 and the connecting portion 31 can be realized without using a nut, which can save time to a certain extent during assembly and improve the assembly efficiency.

[0030] In the content defined by this embodiment, the mating end 32 includes a first pin 321 and a second pin 322 integrally bent from opposite sides of the self-connection part 31 respectively. The separating directions of the first pin 321 and the second pin 322 are the same as and correspond to the separating directions of the first insertion cavity 131 and the second insertion cavity 132, and can be separated along the length direction of the insulating housing 1. They can also be separated along the width direction. The first pin 321 is inserted into the first insertion cavity 131 and passes through the first insertion opening 133 to extend out to the second side 12 outside, and the second pin 322 is inserted into the second insertion cavity 132 and passes through the second insertion opening 134 to extend out to the second side 12 outside, so as to realize the connection between the metal terminal 3 and the insulating housing 1. At the same time, the parts of the first pin 321 and the second pin 322 extending outside the second side 12 are used to connect with conductive elements such as docking terminals or circuit boards to achieve conduction. Compared with the traditional metal terminal 3, the first pin 321 and the second pin 322 of the present utility model are equivalent to two terminals, which are more reliable through integral molding and reduce the processing procedures at the same time.

[0031] In this embodiment, the first pin 321 has a first insertion section 321a that extends toward the second side 12 along the insertion direction after being bent from the self-connection part 31 to sequentially pass through the first insertion cavity 131 and the first insertion opening 133, and a first mating section 321b that extends after being bent from the first insertion section 321a and is used to connect with the conductive element. The first insertion section 321a realizes the connection with the insulating housing 1, and the first mating section 321b realizes the connection with the conductive element. Among them, barbs 323 are symmetrically protruded on both sides of the first insertion section 321a along its width direction. The barbs 323 are arranged corresponding to the first insertion cavity 13 so as to be located in the first insertion cavity 13 and abut against the inner wall of the first insertion cavity 13 after the first pin 321 is installed in place, thereby preventing the first pin 321 from shaking in the first insertion cavity 13 and improving the stability and the use safety of the metal terminal 3. The width of the first mating section 321b can be the same as the width of the first insertion section 321a or smaller than the width of the first insertion section 321a. A narrow end 32a with a width smaller than that of the first mating section 321b is provided at one end of the first mating section 321b far from the first insertion section 321a, so as to facilitate the soldering of conductive elements such as circuit boards.

[0032] In this embodiment, the second pin 322 has a second insertion section 322a that extends from the self-connection section 31 along the insertion direction toward the second side 12 and sequentially passes through the second insertion cavity 132 and the second insertion opening 134, and a second mating section 322b that extends in the same direction as the first mating section 321b after being bent from the second insertion section 322a and is used to connect with the conductive element. The second insertion section 322a realizes the connection with the insulating housing 1, and the second mating section 322b realizes the connection with the conductive element. Wherein, barbs 323 are symmetrically protruded on both sides of the second insertion section 322a along its width direction. The barbs 323 are arranged corresponding to the second insertion cavity 13 and are located in the second insertion cavity 13 and abut against the inner wall of the second insertion cavity 13 after the second pin 322 is installed in place, so as to prevent the second pin 322 from shaking in the second insertion cavity 13 and improve the stability and the use safety of the metal terminal 3. The width of the second mating section 322b can be the same as that of the second insertion section 322a or smaller than that of the second insertion section 322a. A narrow end 32a with a width smaller than that of the second mating section 322b is also provided at one end of the second mating section 322b away from the second insertion section 322a, so as to facilitate the soldering of conductive elements such as circuit boards.

[0033] In this embodiment, the dust-proof part 4 is used to surround the outside of the protection space and is detachably connected to the enclosure part 15. Among the contents defined in this embodiment, the dust-proof part 4 has a top plate 41 covering the enclosure part 15 and side plates 42 bent and extended from the opposite sides of the top plate 41 respectively to surround the sides of the enclosure part 15. Among them, the enclosure part 15 is arranged on both sides of the protection space along the length direction, and the side plates 42 are arranged on both sides of the protection space along the width direction to surround the outside of the protection space from four directions, so as to shield and protect the metal terminals 3. In this embodiment, the length and width of the top plate 41 are both adapted to the length and width of the insulating housing 1. The side plates 42 extend from the top plate 41 along the insertion direction towards the second side 12 so as to just cover the insulating housing 1. The top plate 41 shields the side of the protection space away from the support surface 16, and the two side plates 42 shield the two through side surfaces of the enclosure part 15, realizing a relatively comprehensive shielding. The dust-proof part 4 can be connected to the enclosure part 15 by a snap connection. In this embodiment, the dust-proof part 4 is slidably arranged on the enclosure part 15 to achieve detachable connection. Specifically, a sliding space 44 is formed by surrounding between the top plate 41 and the two side plates 42, and the dust-proof part 4 is slidably covered on the enclosure part 15 through the sliding space 44. Among them, the top plate 41 and the two side plates 42 are in a U shape so as to form the sliding space 44 inside, and the width of the sliding space 44 is slightly larger than that of the enclosure part 15, that is, the gap is about 1 mm. And the sliding space 44 penetrates in the length direction, so that the dust-proof part 4 can slide on the enclosure part 15 along the length direction to realize the shielding or opening of the protection space. In order to avoid forming a sealed environment and being inconvenient for heat dissipation, after the side plates 42 are installed on the enclosure part 15, they do not completely shield the protection space and are spaced apart from the first side 11 of the insulating housing 1, which is convenient for heat dissipation and for observing the situation of the metal terminals 3, and at the same time is convenient for wires to pass through. In order to increase heat dissipation while ensuring dust prevention, on the side surface of the top plate 41 facing the enclosure part 15, an avoidance groove 43 penetrating the top plate 41 along the length direction is recessed towards the side away from the enclosure part 15. On both sides of the top plate 41 where the avoidance groove 43 is located, there are support edges 46 for facing the two side edges of the enclosure part 15 along the insertion direction, so as to reduce the contact between the top plate 41 and the enclosure part 15 while ensuring the mutual support between the top plate 41 and the enclosure part 15. In another embodiment, in order to prevent the dust-proof part 4 from falling off or continuing to slide after being installed on the enclosure part 15, convex bumps 45 for tightly pressing the enclosure part 15 after the dust-proof part 4 covers the enclosure part 15 are recessed on the inner side walls of the side plates 42, and on the enclosure part 15, a card slot 17 for the convex bumps 45 to be clamped therein is recessed. The minimum distance between the diameters of the convex bumps 45 on the two side plates 42 is less than the length of the enclosure part 15 in the width direction of the insulating housing 1, and the dust-proof part 4 can be made of plastic.After the dust-proof part 4 faces the enclosure part 15 along the insertion direction, the convex bumps 45 are aligned with the respective card slots 17. Move the dust-proof part 4 towards the enclosure part 15. After the convex bumps 45 contact the enclosure part 15, they are squeezed, causing the two side plates 42 to deform outwards until the convex bumps 45 are snapped into the card slots 17 to restrict the movement of the dust-proof part 4, thereby positioning the dust-proof part 4, improving the fastening degree, and preventing the dust-proof part 4 from falling off.

[0034] The working method of one embodiment of the fence-type terminal block of the present utility model is as follows: After the wire is crimped between the pressing plate 21 and the connecting part 31, the metal terminal 3 is installed on the insulating housing 1. It is also possible to install the metal terminal 3 first, then crimp the wire, and then cover the dust-proof part 4 on the enclosure part 15. After bending the first pin 321 and the second pin 322 and connecting them to the conductive element, the connection assembly and use of the present utility model are completed.

Claims

1. A fence-type terminal block, comprising an insulating housing, a screw assembly and a metal terminal, wherein the insulating housing is provided with an insertion cavity penetrating through a first side and a second side of an insulating body along a plugging direction, and the metal terminal comprises a connecting portion and a mating end inserted into the insertion cavity from the first side and passing through the second side to be connected to a conductive element, characterized in that: An enclosure portion is protruded on the first side of the insulating shell corresponding to the periphery of the insertion cavity, and a protective space is formed between the enclosure portions. The metal terminals and screw assemblies are both located within the enclosure portions. The fence-type terminal block also includes a dustproof portion that is detachably connected to the enclosure portion and is used to shield the protective space.

2. The barrier type terminal block according to claim 1, characterized in that: The connecting part is provided with a screw-mounted part which passes through the connecting part along the plugging direction, and the screw assembly comprises a pressing plate supported by the connecting part and a screw screwed on the pressing plate and the screw-mounted part.

3. The barrier type terminal block according to claim 1 or 2, characterized in that: The mating end includes a first pin and a second pin that are integrally bent from opposite sides of the connecting portion, and the insertion cavity includes a first insertion cavity and a second insertion cavity that pass through the first side along the insertion direction at positions corresponding to the first pin and the second pin, respectively, and the first insertion cavity and the second insertion cavity respectively have a first insertion interface and a second insertion interface that pass through the second side along the insertion direction, the first pin is inserted into the first insertion cavity and extends to the outside of the second side through the first insertion interface, and the second pin is inserted into the second insertion cavity and extends to the outside of the second side through the second insertion interface.

4. The barrier type terminal block according to claim 3, characterized in that: The first pin comprises a first insertion section extending from the connection portion along the insertion direction to sequentially pass through the first insertion cavity and the first insertion interface, and a first matching section extending from the first insertion section and bent to connect with the conductive element; The second pin comprises a second insertion section extending from the connection portion along the insertion direction to sequentially pass through the second insertion cavity and the second insertion interface, and a second mating section extending from the second insertion section and bending in the same direction as the first mating section for connecting with the conductive element.

5. The barrier type terminal block according to claim 4, characterized in that: The side walls of the first insertion section and the second insertion section are both provided with barbs for respectively tightly fitting with the inner walls of the first insertion cavity and the second insertion cavity.

6. The barrier type terminal block according to claim 4, characterized in that: The first mating section and the second mating section both have narrow ends that are convenient for connection with the conductive element.

7. The barrier type terminal block according to claim 1, characterized in that: The dustproof part comprises a top plate covering the enclosure part and side plates respectively bent and extended from opposite sides of the top plate to surround the sides of the enclosure part, a sliding space is formed between the top plate and the two side plates, and the dustproof part is slidably covered on the enclosure part through the sliding space.

8. The barrier type terminal block according to claim 7, characterized in that: The top plate is provided with an avoidance groove on the side away from the enclosure portion, and the top plate has support edges for contacting the enclosure portion on both sides of the avoidance groove.

9. The barrier type terminal block according to claim 8, characterized in that: The inner side wall of the side plate is provided with a convex bump for pressing against the enclosure portion.

10. The barrier type terminal block according to claim 9, characterized in that: A slot for the convex hump to be clamped therein is provided on the enclosure portion at a position corresponding to the convex hump.

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