Electrical equipment

Abstract

The utility model provides electrical equipment, which belongs to the technical field of electrified assembly and comprises a unit shell, an insulating terminal and a connecting electric bar. A mounting opening is formed in the unit shell; a circuit board is arranged in the unit shell; the insulating terminal penetrates through the mounting port and is fixedly connected with the unit shell; the front end of the insulating terminal is located in the unit shell, and an avoiding gap exists between the front end of the insulating terminal and the circuit board. The rear end of the insulating terminal is located outside the unit shell; the connecting electric bar is provided with a first end and a second end, and the first end is arranged at the front end of the insulating terminal and is electrically connected with the circuit board; and the second end is arranged at the rear end of the insulating terminal and is connected with an external cable through a second fastener. According to the electrical equipment provided by the utility model, the stress area of the edge of the circuit board can be reduced, and the circuit board is prevented from being damaged by mechanical stress.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electrical assembly technical field, more specifically, relate to an electrical equipment. BACKGROUND

[0002] Electrical equipment is an important part of modern power systems. Insulated terminal block is a key component for connecting and fixing external cables in electrical equipment. In the prior art, the insulated terminal block is generally fixed on the equipment shell, the inner end is connected with the circuit board inside the equipment, and the outer end is connected with the external cable through the fastener. However, this design has the following problems:

[0003] I. When operating the fastener, the fastening force exerted by the fastener on the insulated terminal block is directly transmitted to the circuit board, causing the circuit board to be subjected to mechanical stress, which may cause damage to the circuit board and affect the normal operation of the equipment.

[0004] II. Because the number of external cables is large and the weight is large, the external cables will exert a downward dragging force on the outer end of the insulated terminal block. This dragging force will be further transmitted to the inner end of the insulated terminal block, causing the edge of the circuit board to be raised upward, resulting in deformation or damage to the circuit board, and thus affecting the stability and reliability of the electrical equipment. SUMMARY

[0005] The utility model aims at providing an electrical equipment, which aims to solve the technical problem that the insulated terminal block in the prior art can damage the circuit board.

[0006] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of providing an electrical equipment, which comprises at least one unit module, the unit module comprising:

[0007] a unit housing having a mounting opening; the interior of the unit housing being provided with a circuit board;

[0008] an insulated terminal penetrating the mounting opening and fixedly connected with the unit housing; the front end of the insulated terminal being located inside the unit housing and having an avoidance gap with the circuit board; the rear end of the insulated terminal being located outside the unit housing; and

[0009] a connection terminal block placed on the insulated terminal and having a first end and a second end, the first end being arranged at the front end of the insulated terminal and electrically connected with the circuit board; the second end being arranged at the rear end of the insulated terminal and connected with the external cable through a second fastener.

[0010] In one possible implementation, the second end has a second lapping plane, and the end of the external cable is placed on the second lapping plane; one end of the second fastener passes through the external cable and the second end in sequence;

[0011] The second lapping plane is arranged to be inclined upward or downward relative to the horizontal direction and faces the outside of the unit module.

[0012] In some embodiments, the rear end of the insulating terminal is fixedly connected with a locking nut, and the second fastener is fastened with the locking nut.

[0013] In some embodiments, the circuit board is provided with a terminal post; the first end has a first lapping plane perpendicular to the up-down direction, a terminal end of the terminal post lapping with the first lapping plane, and the first end and the terminal post are connected through a first fastener.

[0014] In a possible implementation, the circuit board is provided with a relief hole having a notch penetrating the sidewall of the circuit board; the front end of the insulating terminal is inserted into the relief hole along the up-down direction, and the relief gap is formed between the front end of the insulating terminal and the hole wall of the relief hole.

[0015] In a possible implementation, the electrical device further comprises an insulating cover, the insulating cover covering the outside of the rear end of the insulating terminal; the insulating cover is provided with a wire outlet hole, and the external cable is arranged at the wire outlet hole.

[0016] In a possible implementation, the insulating terminal has a boss, the boss is located in the unit shell and abuts with the sidewall of the unit shell along the front-rear direction; the insulating terminal and the unit shell are further fixedly connected along the up-down direction.

[0017] In a possible implementation, the insulating terminal has a support part, the support part is located between the bottom sidewall of the unit shell and the circuit board, and is used for supporting the circuit board.

[0018] In a possible implementation, the insulating terminal comprises:

[0019] A main seat body is fixedly arranged at the mounting port, the front end is located in the unit shell, and the rear end is located outside the unit shell;

[0020] A plurality of inner partition plates are arranged at the front end of the main seat body; a first terminal space is formed between each adjacent two inner partition plates; and

[0021] A plurality of outer partition plates are arranged at the rear end of the main seat body; a second terminal space is formed between each adjacent two outer partition plates, and a plurality of the second terminal spaces and a plurality of the first terminal spaces correspond to each other along the front-rear direction.

[0022] The insulation terminal is provided with a second wiring space, and the insulation terminal is further provided with a separation part.

[0023] In a possible implementation, the electrical equipment comprises at least two groups of unit modules connected in sequence in the up-down direction.

[0024] The insulation terminal is provided with a second wiring space, and the insulation terminal is further provided with a separation part.

[0025] The at least two groups of insulation terminals are arranged in the up-down direction in a spaced manner, and the separation part of one of the insulation terminals in each adjacent two groups of insulation terminals is in up-down alignment with the second wiring space of the other insulation terminal.

[0026] The electrical equipment has the advantages that, compared with the prior art, the electrical equipment of the utility model, since the insulation terminal is fixed on the unit shell and there is a clearance between the insulation terminal and the circuit board, the insulation terminal does not directly contact the circuit board, when the second fastener is tightened, the fastening force applied on the insulation terminal is all transmitted to the unit shell, so that the circuit board is prevented from being damaged due to mechanical stress; moreover, even if the drag force applied by the external cable is transmitted to the front end of the insulation terminal, since the insulation terminal does not contact the circuit board, the insulation terminal will not apply the drag force to the circuit board, the stress area of the edge of the circuit board is reduced, and fatigue damage of the circuit board is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0028] Figure 1 The structure diagram of the electrical equipment provided by the utility model embodiment Figure 1 (unit shell and insulation cover are not shown in the figure);

[0029] Figure 2 The structure diagram of another angle of Figure 1

[0030] Figure 3 The enlarged structure diagram of circle A in Figure 1

[0031] Figure 4 The structure diagram of the electrical equipment provided by the utility model embodiment Figure 2 ;​​

[0032] Figure 5 Structure diagram of electrical equipment provided by the embodiment of the utility model Figure 3 (not shown in the figure);

[0033] Figure 6 Structure diagram of insulating terminal of electrical equipment provided by the embodiment of the utility model;

[0034] Figure 7 Structure diagram of another angle of Figure 6

[0035] Figure 8 Structure diagram of connecting electric row of electrical equipment provided by the embodiment of the utility model.

[0036] In the figure:

[0037] 1, circuit board;11, avoiding gap;12, notch;

[0038] 2, terminal post;

[0039] 3, insulating terminal;31, boss;32, support column;33, support part;34, main seat body;35, inner partition plate;351, first wiring space;36, outer partition plate;361, second wiring space;37, isolation part;38, lightning protection grounding row;

[0040] 4, connecting electric row;41, first end;411, first lap plane;42, second end;421, second lap plane;

[0041] 5, first fastener;

[0042] 6, second fastener;

[0043] 7, locking nut;

[0044] 8, unit shell;81, mounting port;

[0045] 9, insulating cover;91, wire hole. DETAILED DESCRIPTION

[0046] In order to make the technical problems, technical schemes and beneficial effects to be solved by the utility model more clearly and clearly, the utility model is further described in detail below by combining with the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0047] Please see Figures 1 to 4 ​The utility model provides electrical equipment, and the electrical equipment comprises at least one unit module, the unit module comprises a unit shell 8, an insulating terminal 3 and a connecting power strip 4. The unit shell 8 is provided with a mounting port 81; the inside of the unit shell 8 is provided with a circuit board 1; the insulating terminal 3 penetrates the mounting port 81 and is fixedly connected with the unit shell 8; the front end of the insulating terminal 3 is located in the inside of the unit shell 8 and is provided with an avoiding gap 11 between the circuit board 1; the rear end of the insulating terminal 3 is located outside the unit shell 8; the connecting power strip 4 has a first end 41 and a second end 42, the first end 41 is arranged at the front end of the insulating terminal 3 and is electrically connected with the circuit board 1; the second end 42 is arranged at the rear end of the insulating terminal 3 and is connected with an external cable through a second fastener 6.

[0048] It should be noted that the "front" and "rear" defined in the embodiment are in the direction of the normal application of the electrical equipment, specifically, the electrical equipment is placed in the inside of a cabinet, and the front is the direction towards the front of the cabinet, and the rear is the direction towards the back of the cabinet. In addition, the inside of the electrical equipment is provided with a fan assembly for ventilating and cooling the internal elements of the electrical equipment, and the fan assembly is located at the front end of the electrical equipment, therefore, the front-rear direction can also be regarded as the airflow direction.

[0049] The electrical equipment adopts the design of unit module, and each unit module can be independently installed and maintained. The modular design not only facilitates the assembly and disassembly of the equipment, but also improves the expansibility and flexibility of the equipment.

[0050] Specifically, the rear side wall of the unit shell 8 is provided with the mounting port 81, and the external cable is connected to the rear of the unit shell 8. The insulating terminal 3 is fixed at the mounting port 81. The insulating terminal 3 is used to ensure the insulation performance of electrical connection, to avoid the risk of short circuit or electric leakage caused by the direct contact between the external cable and the circuit board 1, so as to ensure the safety of the electrical equipment.

[0051] The connecting power strip 4 is placed on the insulating terminal 3, and the second end 42 is fastened and connected with the external cable through the second fastener 6. The first end 41 is connected with the circuit board 1. The electrical connection between the external cable and the circuit board 1 is realized through the connecting power strip 4. Specifically, the board surface of the circuit board 1 is arranged perpendicular to the up-down direction, and the circuit board 1 can be connected with the first end 41 through a wire or through a terminal post 2. The wire or the terminal post 2 is generally connected to the rear side edge of the circuit board 1.

[0052] In existing technologies, to meet safety regulations and achieve modular installation, the insulating terminal 3 is integrally connected to the circuit board 1. The inventors discovered that during installation or maintenance, the locking force applied by the second fastener 6 is directly transmitted to the circuit board 1 through the insulating terminal 3. Because the circuit board 1 is brittle and has weak resistance to mechanical stress, repeated or excessive tightening forces can easily lead to solder joint cracking, copper foil peeling, or even substrate breakage, severely affecting the reliability of the electrical connection. Furthermore, when multiple external cables are connected to the electrical equipment, the weight of the external cables and the external forces create a continuous downward dragging torque at the rear end of the insulating terminal 3. This torque, transmitted through the rigidly connected insulating terminal 3, causes upward warping deformation at the edge of the circuit board 1. Over time, this not only leads to fatigue damage at the connection between the circuit board 1 and the insulating terminal 3 but may also trigger a chain reaction of failures such as component pin desoldering and PCB delamination.

[0053] Compared with the prior art, the electrical equipment provided by this utility model has the following advantages: since the insulating terminal 3 is fixed on the unit housing 8 and there is a clearance gap 11 between the insulating terminal 3 and the circuit board 1, the insulating terminal 3 and the circuit board 1 do not have direct contact. When the second fastener 6 is tightened, the tightening force applied to the insulating terminal 3 will be transferred to the unit housing 8, thereby avoiding damage to the circuit board 1 due to mechanical stress. Moreover, even if the dragging force applied by the external cable is transferred to the front end of the insulating terminal 3, since the insulating terminal 3 does not contact the circuit board 1, the insulating terminal 3 will not apply dragging force to the circuit board 1, reducing the force-bearing area of ​​the edge of the circuit board 1 and avoiding fatigue damage to the circuit board 1.

[0054] In some embodiments, the second end 42 described above may be as follows: Figure 2 , Figure 6 and Figure 8 The structure shown is described in the following document. Figure 2 , Figure 6 and Figure 8 The second end 42 has a second overlapping plane 421, and the end of the external cable is placed on the second overlapping plane 421; one end of the second fastener 6 passes through the external cable and the second end 42 in sequence; wherein, the second overlapping plane 421 is inclined upward or downward relative to the horizontal direction and faces the outside of the unit module.

[0055] The second overlapping plane 421 is inclined relative to the horizontal direction. Therefore, the fastening direction of the second fastener 6 is not the vertical direction, but has an angle with the vertical direction. That is, the fastening direction of the fastening force is inclined. Then the fastening force on the rear end of the insulating terminal 3 can be decomposed into a horizontal component and a vertical component. The vertical component ensures that the cable is in close contact with the second overlapping plane 421, increasing the friction. The horizontal component pushes the external cable toward the unit housing 8, counteracting the slippage tendency caused by external dragging.

[0056] In addition, the second lap plane 421 is arranged obliquely relative to the horizontal direction, and relative to the vertical direction, on the one hand, it is easier for the operator to perform the fastening operation, and on the other hand, the oblique angle can guide the external cable to naturally sag, reducing the bending stress.

[0057] In some embodiments, the above-mentioned insulating terminal 3 can also adopt the structure as shown in Figure 6 Figure 6 The rear end of the insulating terminal 3 is fixedly connected with a locking nut 7, and the second fastener 6 is fastened with the locking nut 7.

[0058] Specifically, the locking nut 7 is welded and fixed at the rear end of the insulating terminal 3, that is, it is an integrated structure with the insulating terminal 3. The locking nut 7 is integrally welded with the insulating terminal 3 to form a rigid whole, and the second fastener 6 (such as a bolt) is directly screwed with the locking nut 7, and the fastening force transmission path is: external cable compression force→second lap plane 421→insulating terminal 3→locking nut 7→unit shell 8. Since the locking nut 7 itself cannot move, the fastening force of the second fastener 6 on the second end 42 and the external cable is all transmitted to the insulating terminal 3 and the unit shell 8, further improving the mechanical stability and operation convenience of the external cable connection.

[0059] In addition, the locking nut 7 cooperates with the second lap plane 421, and the rigid fixation of the locking nut 7 can resist the horizontal component of the external cable drag to prevent displacement of the rear end of the insulating terminal 3. The locking nut 7 also bears the vertical component of the cable pressure to avoid bending of the insulating terminal 3. Therefore, the second lap plane 421 and the locking nut 7 form a two-way constraint, further dispersing stress and protecting the circuit board 1.

[0060] In some embodiments, the above-mentioned connecting electric row 4 can also adopt the structure as shown in Figure 1 Figure 3 Figure 7 Figure 8 In some embodiments, the above-mentioned connecting electric row 4 can also adopt the structure as shown in Figure 1 Figure 3 Figure 7 Figure 8 The circuit board 1 is provided with a terminal post 2; the first end 41 has a first lap plane 411 perpendicular to the up-down direction, and the terminal end of the terminal post 2 is lapped with the first lap plane 411, and the first end 41 is connected with the terminal post 2 through the first fastener 5.

[0061] Specifically, the terminal post 2 has a pin, which penetrates through the circuit board 1 and is welded and fixed on the circuit board 1. The circuit board 1 is fastened and connected with the first end 41 through the terminal post 2, and relative to the connection mode using a traditional wire harness (such as a flying wire or a flexible cable), the rigid connection can avoid poor contact caused by vibration or thermal expansion and cold contraction, and avoid the distribution of internal wire harness of the equipment being messy.

[0062] ​​​​​​​The terminal 2 is welded and fixed on the circuit board 1, the terminal 2 is connected with the first end 41 through the first fastener 5, the locking force of the first fastener 5 is borne by the terminal 2, the circuit board 1 only bears the vertical pressure and no shear stress, the circuit board 1 not only obtains the reliability of the rigid connection, but also is free from the interference of external mechanical stress.

[0063] In some embodiments, the structure shown in Figure 1 、 Figure 2 and Figure 3 may be adopted between the circuit board 1 and the insulating terminal 3, see Figure 1 、 Figure 2 and Figure 3 , the circuit board 1 is provided with a relief hole, the relief hole has a gap 12 penetrating through the side wall of the circuit board 1; the front end of the insulating terminal 3 is inserted into the relief hole in the up-down direction, and the gap 11 is formed between the front end of the insulating terminal 3 and the hole wall of the relief hole.

[0064] The insulating terminal 3 penetrates through the circuit board 1, that is, the volume occupied by the front end of the insulating terminal 3 in the up-down direction is large, and the weight of the front end is large, so that the deformation of the rear end caused by the "lever effect" of the dragging stress of the external cable on the insulating terminal 3 can be eliminated.

[0065] The relief hole has a gap 12 penetrating through the side wall of the circuit board 1, on the one hand, when the insulating terminal 3 is assembled, the front end of the insulating terminal 3 extends into the relief hole from the gap 12, so that the assembly can be quickly completed without precise alignment, thereby facilitating the installation of the insulating terminal 3. On the other hand, the design of the gap 12 allows the front end of the insulating terminal 3 to produce a small deformation displacement when stressed, thereby further absorbing stress energy.

[0066] The cooperation of the gap 12 of the side wall of the relief hole and the gap 11 eliminates the rigid constraint between the edge of the circuit board 1 and the insulating terminal 3. When the rear end of the insulating terminal 3 is pressed down by the dragging force of the external cable, the front end can float a little in the direction of the gap 12, thereby eliminating the warping effect of the "lever effect" in the traditional structure on the circuit board 1, and effectively preventing the circuit board 1 from delaminating or the solder joint from cracking.

[0067] In some embodiments, the electrical equipment can also adopt the structure shown in Figure 4 , see Figure 4 , the electrical equipment further comprises an insulating cover 9, the insulating cover 9 covers the outside of the rear end of the insulating terminal 3; the insulating cover 9 is provided with a wire outlet hole 91, and the external cable is arranged at the wire outlet hole 91.

[0068] When the electrical equipment is used normally, the connection strip 4 is live, if the protection of the connection strip 4 is not in place, there is a risk of being touched by mistake and short-circuiting, and the electrical equipment has a safety hazard. In this embodiment, the insulating cover 9 is arranged at the rear end of the insulating terminal 3, which effectively protects the connection strip 4 and prevents it from being exposed and touched by mistake, thereby eliminating the safety hazard.

[0069] In addition, the insulation cover 9 is provided with a wire outlet hole 91 for facilitating the introduction and fixation of the external cable, which not only ensures the protection effect, but also takes into account the flexibility of the external cable wiring. In addition, the wire outlet hole 91 also plays a supporting role for the external cable, which is lapped on the bottom wall of the wire outlet hole 91, and can further reduce the drag force of the external cable on the insulation terminal 3.

[0070] It should be noted that the insulation cover 9 is detachably connected with the unit shell 8. When wiring operation is needed, the insulation cover 9 is detached from the unit shell 8, so that the second end 42 of the connection power strip 4 and the rear end of the insulation terminal 3 are exposed, thereby facilitating wiring. When the electrical equipment is in normal use, the insulation cover 9 is fixed on the unit shell 8.

[0071] In some embodiments, the above-mentioned insulation terminal 3 can also adopt the structure as shown in Figure 1 , Figure 2 , Figure 6 and Figure 7 , see Figure 1 , Figure 2 , Figure 6 and Figure 7 . The insulation terminal 3 has a boss 31, which is located in the unit shell 8 and abuts the side wall of the unit shell 8 in the front-rear direction. The insulation terminal 3 is also fixedly connected with the unit shell 8 in the up-down direction.

[0072] Specifically, the boss 31 is located on the left and right sides of the insulation terminal 3 and the periphery of the mounting port 81. The boss 31 abuts the side wall of the unit shell 8, forming a front-rear direction stop. On the one hand, it prevents the insulation terminal 3 from being displaced outward due to the drag or vibration of the external cable. On the other hand, the boss 31 structure directly transmits the drag force exerted by the external cable to the unit shell 8 rather than the circuit board 1, further isolating the circuit board 1 from stress.

[0073] In addition, the insulation terminal 3 is rigidly connected with the unit shell 8 in the up-down direction, ensuring that the insulation terminal 3 will not sway up and down due to the weight or operating torque of the external cable, further reducing the risk of warping of the circuit board 1.

[0074] Preferably, the boss 31 can also be connected with the lightning protection grounding strip 38, one end of which is fixed on the boss 31 and the other end is fixed on the circuit board 1. The insulation terminal 3 isolates the lightning protection grounding strip 38 from the unit shell 8 to ensure sufficient safety distance.

[0075] In some embodiments, the above-mentioned insulation terminal 3 can also adopt the structure as shown in Figure 7 , see Figure 7 . The insulation terminal 3 has a support portion 33, which is located between the bottom side wall of the unit shell 8 and the circuit board 1, and is used to support the circuit board 1.

[0076] The support part 33 can be regarded as a front end base of the insulating terminal 3, which is located between the bottom side wall of the unit shell 8 and the circuit board 1, the unit shell 8 supports the support part 33, and the support part 33 supports the circuit board 1, forming an additional mechanical fulcrum, which can effectively resist the edge warping of the circuit board 1 caused by external cable dragging or equipment vibration, avoiding the cracking or delamination of the welding point; on the other hand, it can also withstand the fastening force of the terminal post 2 and the first end 41.

[0077] The support part 33 can also be made of elastic material (such as engineering plastic) or designed as a buffer structure to absorb high-frequency vibration energy during equipment operation and reduce the impact on the precision components on the circuit board 1.

[0078] It should be noted that the support part 33 is determined according to the electrical connection performance of the insulating terminal 3 and the pad position of the circuit board 1. The support part 33 should avoid the pads of the circuit board 1, if it cannot be avoided, the support part 33 can not be set, only a smaller support column 32 can be placed below the circuit board 1, which is located directly below the terminal post 2, and also plays a role in supporting the circuit board 1.

[0079] In some embodiments, the above-mentioned insulating terminal 3 can adopt the structure as shown in Figure 6 and Figure 7 , which will be described below. Figure 6 and Figure 7 The insulating terminal 3 includes a main body 34, a plurality of inner partitions 35 and a plurality of outer partitions 36. The main body 34 is fixedly arranged at the mounting port 81, the front end is located in the unit shell 8, and the rear end is located outside the unit shell 8; the plurality of inner partitions 35 are arranged at the front end of the main body 34; each two adjacent inner partitions 35 form a first wiring space 351; the plurality of outer partitions 36 are arranged at the rear end of the main body 34; each two adjacent outer partitions 36 form a second wiring space 361, and the plurality of second wiring spaces 361 and the plurality of first wiring spaces 351 correspond one by one in the front-rear direction.

[0080] Among them, the insulating terminal 3 corresponds to a plurality of connection bays 4, and the first end 41 of each connection bay 4 corresponds to the first wiring space 351, and the second end 42 corresponds to the second wiring space 361.

[0081] The main body 34 is fixedly connected with the rear side wall of the unit shell 8 and blocks the mounting port 81. The main body 34 provides a stable support basis for the insulating terminal 3. Each two adjacent inner partitions 35 form an independent first wiring space 351, and each two adjacent outer partitions 36 form an independent second wiring space 361, which can meet the demand of multi-loop electrical connection, and is suitable for complex electrical systems, can connect multiple cables at the same time, and enhances the applicability and functional expandability of the equipment.

[0082] Specifically, the first wiring space 351 and the second wiring space 361 are formed by the inner partition plate 35 and the outer partition plate 36, respectively, so that each of the first end 41 and the second end 42 of the connecting busbar 4 is independently isolated, effectively preventing short circuit or accidental touch of the multi-cable during wiring, and significantly improving electrical safety.

[0083] In addition, the inner partition plate 35 provides lateral limiting for the first end 41 of the connecting busbar 4, and the outer partition plate 36 provides lateral limiting for the second end 42, so that the double constraints avoid displacement of the connecting busbar 4 under vibration or dragging force, and ensure long-term contact reliability.

[0084] The plurality of second wiring spaces 361 correspond to the plurality of first wiring spaces 351 one by one in the front-rear direction, forming a visual channel, so that the external cable can be directly aligned with the second end 42 of the connecting busbar 4 during installation, avoiding misconnection; and the target cable can be quickly positioned through the outer partition plate 36 during maintenance.

[0085] In some embodiments, the above-mentioned electrical device can also adopt the structure as shown in Figure 5 , referring to Figure 5 , the electrical device includes at least two groups of unit modules connected in sequence in the up-down direction; wherein the insulation terminal 3 has a second wiring space 361, and the insulation terminal 3 is further provided with an isolation part 37; the at least two groups of insulation terminals 3 are arranged in the up-down direction, and the isolation part 37 of one of the two adjacent groups of insulation terminals 3 is vertically aligned with the second wiring space 361 of the other group of insulation terminals 3.

[0086] The unit module is provided with at least two groups in the up-down direction, and the vertical layout optimizes the space utilization, so that the electrical device can realize high power density while maintaining small size, thereby meeting the dual demands of high performance and miniaturization of compact devices.

[0087] The isolation part 37 on the insulation terminal 3 is vertically aligned with the second wiring space 361 of the adjacent insulation terminal 3 in the up-down direction, ensuring reliable electrical isolation between the two groups of insulation terminals 3 in the up-down direction, preventing electrical interference or short circuit risk between the two adjacent insulation terminals 3 in the up-down direction, and improving the safety and reliability of the device operation.

[0088] In addition, the end of the external cable is installed in the second wiring space 361. The isolation part 37 on the insulating terminal 3 is aligned vertically with the second wiring space 361 of the adjacent insulating terminal 3. It can be understood that the two adjacent second wiring spaces 361 are staggered. That is to say, the two adjacent sets of external cables are staggered and are not aligned vertically. The upper row of external cables will not interfere with the lower row of external cables. This staggered layout makes the introduction and connection of external cables smoother, avoids the crossing or tangling of cables, and simplifies the installation and maintenance operations.

[0089] It should be noted that the outer partition 36 of the insulating terminal 3 can be regarded as the isolation part 37. The two outer partitions 36 form a wiring isolation space, which can effectively isolate the connecting busbar 4 in the adjacent wiring isolation space, prevent safety hazards caused by electrical interference or short circuit. Moreover, each wiring isolation space is set independently, which further improves the safety and reliability of the electrical equipment operation.

[0090] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electrical device, characterized in that, It includes at least one unit module, the unit module comprising: The unit housing (8) has an installation port (81); the unit housing (8) has a circuit board (1) inside. An insulating terminal (3) passes through the mounting opening (81) and is fixedly connected to the unit housing (8); the front end of the insulating terminal (3) is located inside the unit housing (8) and has a clearance gap (11) between it and the circuit board (1); the rear end of the insulating terminal (3) is located outside the unit housing (8); and The connecting busbar (4) is placed on the insulating terminal (3) and has a first end (41) and a second end (42). The first end (41) is located at the front end of the insulating terminal (3) and is electrically connected to the circuit board (1). The second end (42) is located at the rear end of the insulating terminal (3) and is connected to an external cable through a second fastener (6).

2. The electrical equipment as described in claim 1, characterized in that, The second end (42) has a second overlapping plane (421), and the end of the external cable is placed on the second overlapping plane (421); one end of the second fastener (6) passes through the external cable and the second end (42) in sequence. The second overlapping plane (421) is inclined upward or downward relative to the horizontal direction and faces the outside of the unit module.

3. The electrical equipment as described in claim 2, characterized in that, The rear end of the insulating terminal (3) is fixedly connected to a locking nut (7), and the second fastener (6) is fastened to the locking nut (7).

4. The electrical equipment as described in claim 2, characterized in that, The circuit board (1) is provided with a terminal block (2); the first end (41) has a first overlapping plane (411) perpendicular to the up and down direction, the terminal of the terminal block (2) overlaps with the first overlapping plane (411), and the first end (41) and the terminal block (2) are connected by a first fastener (5).

5. The electrical equipment as described in claim 1, characterized in that, The circuit board (1) has a clearance hole with a notch (12) that penetrates the side wall of the circuit board (1); the front end of the insulating terminal (3) is inserted into the clearance hole in the vertical direction and forms the clearance gap (11) with the hole wall of the clearance hole.

6. The electrical equipment as claimed in claim 1, characterized in that, The electrical equipment also includes an insulating cover (9), which covers the rear end of the insulating terminal (3); the insulating cover (9) is provided with a cable outlet (91), and the external cable is laid at the cable outlet (91).

7. The electrical equipment as claimed in claim 1, characterized in that, The insulating terminal (3) has a boss (31) located inside the unit housing (8) and abutting against the side wall of the unit housing (8) in the front-back direction; the insulating terminal (3) is also fixedly connected to the unit housing (8) in the up-down direction.

8. The electrical equipment as claimed in claim 1, characterized in that, The insulating terminal (3) has a support portion (33) located between the bottom sidewall of the unit housing (8) and the circuit board (1) for supporting the circuit board (1).

9. The electrical equipment as claimed in claim 1, characterized in that, The insulating terminal (3) includes: The main body (34) is fixedly installed at the mounting port (81), with its front end located inside the unit housing (8) and its rear end located outside the unit housing (8); Multiple inner partitions (35) are spaced apart at the front end of the main body (34); a first wiring space (351) is formed between each pair of adjacent inner partitions (35); and Multiple outer partitions (36) are spaced apart at the rear end of the main body (34); a second wiring space (361) is formed between each two adjacent outer partitions (36), and the multiple second wiring spaces (361) correspond one-to-one with the multiple first wiring spaces (351) in the front-back direction; The insulating terminal (3) is arranged with a plurality of the connecting busbars (4), and the first end (41) of each connecting busbar (4) is located in the first wiring space (351), and the second end (42) is located in the second wiring space (361).

10. The electrical equipment as claimed in claim 1, characterized in that, The electrical equipment includes at least two sets of unit modules connected sequentially in the vertical direction; The insulating terminal (3) has a second wiring space (361), and the insulating terminal (3) is also provided with an isolation part (37). At least two sets of insulating terminals (3) are arranged at intervals in the vertical direction, and in each pair of adjacent sets of insulating terminals (3), the isolation portion (37) of one set of insulating terminals (3) is aligned vertically with the second wiring space (361) of the other set of insulating terminals (3).

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