Electrical connection unit and electrical connection structure formed thereby

Abstract

The utility model discloses a kind of electric connection unit and the electric connection structure formed by it, it is related to low-voltage power distribution equipment technical field, electric connection unit includes wiring terminal, electric connection component and connecting row, electric connection component includes contact unit, mouth opening opening and closing limiting mechanism and heat dissipation structure, contact unit one end is electrically connected with wiring terminal, contact unit other end is provided with contact mouth opening, contact mouth opening is used for being pluggable with connecting row in, and in connecting state with connecting row electrical communication;Mouth opening opening and closing limiting mechanism is worn on contact unit, can make contact mouth opening clamp connecting row;Heat dissipation structure is set on mouth opening opening and closing limiting mechanism or contact unit, heat dissipation structure can be heat dissipation to contact unit, heat dissipation is good, improve the operation safety and reliability of equipment.Electric connection structure contains above-mentioned electric connection unit, can be used under the condition of large current, improve the operation safety and reliability of electric connection structure simultaneously.

Description

TECHNICAL FIELD

[0001] The utility model relates to low voltage distribution equipment technical field especially relates to an electric connection unit and the electric connection structure formed by it. BACKGROUND

[0002] In low voltage distribution equipment, in order to realize the quick connection deployment of breaker and other components and distribution line, or the quick disconnection isolation with distribution line when overhauling, electric connection unit is often used. Although the prior art designs the electric connection unit that can be used under the condition of large current with the gradually increasing current capacity of access component, the electric connection unit in the prior art has poor heat dissipation performance, a large amount of heat is generated in the long-term power-on operation process of the electric connection unit, which easily causes the overheat burnout of the electric connection unit, and seriously affects the operation safety and reliability of the equipment. SUMMARY

[0003] The utility model discloses a kind of electric connection unit and the electric connection structure formed by it, and the heat dissipation is good, improve the operation safety and reliability of equipment, solve the problem of above-mentioned prior art.

[0004] To achieve the above object, the utility model provides the following scheme:

[0005] The utility model provides an electric connection unit, including wiring terminal, electric connection component and connecting row, the electric connection component includes contact unit, open and close limit mechanism and heat dissipation structure, one end of the contact unit is electrically connected with the wiring terminal, the other end of the contact unit is provided with contact opening, the contact opening is used for being pluggable with the connecting row, and in the connected state, it is electrically communicated with the connecting row;The open and close limit mechanism is arranged on the contact unit, can make the contact opening clamp the connecting row;The heat dissipation structure is arranged on the open and close limit mechanism or the contact unit, and the heat dissipation structure can dissipate heat for the contact unit.

[0006] In some embodiments, the contact unit includes upper elastic sheet and lower elastic sheet, the upper elastic sheet includes first electric connection part and first contact part opposite to the first electric connection part and electrically connected with the wiring terminal;The lower elastic sheet includes second electric connection part and second contact part opposite to the second electric connection part and electrically connected with the wiring terminal;The upper elastic sheet and the lower elastic sheet are arranged in upper and lower intervals, and the first contact part and the second contact part form the contact opening;The open and close limit mechanism is arranged at the contact opening, so that the upper elastic sheet and the lower elastic sheet are pressed to the upper and lower surfaces of the connecting row respectively by the open and close limit mechanism.

[0007] In some embodiments, the mouth opening and closing limiting mechanism comprises a guide rod, a first limiting structure, a second limiting structure, a compression spring, an upper mounting plate and a lower mounting plate. The guide rod comprises a first limiting portion, a first supporting portion and a second limiting portion arranged in sequence from top to bottom. The upper elastic sheet is provided with a first through hole for the first limiting portion to pass through. The first limiting portion penetrates the first through hole. The lower elastic sheet is provided with a second through hole for the second limiting portion to pass through. The second limiting portion penetrates the second through hole. The first supporting portion is located between the first contact portion and the second contact portion. The top and bottom of the first supporting portion are respectively provided with limiting steps matched with the first through hole and the second through hole, so as to support the upper elastic sheet and the lower elastic sheet when the connecting row and the contact mouth opening are separated. The first limiting structure is arranged on the upper surface of the upper elastic sheet. The first limiting portion penetrates the first limiting structure. The first limiting portion is provided with a supporting step matched with the upper surface of the first limiting structure, so as to limit the relative displacement of the guide rod and the upper elastic sheet through the first limiting structure. The second limiting structure is arranged on the second limiting portion and protrudes outward from the second limiting portion. The compression spring is sleeved on the outer side of the second limiting portion. The compression spring is located between the second contact portion and the second limiting structure. The top of the compression spring is connected or abuts against the lower surface of the second contact portion. The bottom of the compression spring is connected or abuts against the second limiting structure. The compression spring is in a compressed state when the connecting row and the contact mouth opening are separated. The upper mounting plate is arranged above the upper elastic sheet. The upper mounting plate comprises a first connecting portion connected with the first electrical contact portion and a first guide portion opposite to the first connecting portion. The top end of the first limiting portion is in up-down sliding fit with the first guide portion. The lower mounting plate is arranged below the lower elastic sheet. The lower mounting plate comprises a second connecting portion connected with the second electrical contact portion and a second guide portion opposite to the second connecting portion. The bottom end of the second limiting portion is in up-down sliding fit with the second guide portion.

[0008] In some embodiments, the first limiting structure comprises a first limiting hole and a third through hole. The first limiting hole and the third through hole are communicated to form a T-shaped hole. After the supporting step passes through the third through hole, the supporting step can be clamped with the first limiting hole.

[0009] In some embodiments, the second limiting structure is a limiting shaft. The limiting shaft penetrates the second limiting portion vertically. Both ends of the limiting shaft protrude out of the second limiting portion. The protruding portions of both ends of the limiting shaft can support and limit the bottom end of the compression spring.

[0010] In some embodiments, the heat dissipation structure comprises heat dissipation holes. The lower mounting plate and the upper mounting plate are both provided with the heat dissipation holes.

[0011] In some embodiments, the heat dissipation structure further includes a heat sink; the upper mounting plate includes a main plate with heat dissipation holes, a first connecting portion at a first end of the main plate, and both sides of the first connecting portion partially protruding outward in the width direction to form the heat sink; the bottom of the first connecting portion partially protrudes downward along the thickness direction to form a first block-shaped connecting portion; the lower mounting plate includes a Z-shaped motherboard with heat dissipation holes, a second connecting portion at a first end of the Z-shaped motherboard, and both sides of the second connecting portion partially protruding outward in the width direction to form the heat sink; the bottom of the second connecting portion partially protrudes upward along the thickness direction to form a second block-shaped connecting portion.

[0012] In some embodiments, the first contact portion includes a plurality of first contact pieces arranged along the width direction of the main plate, and a dividing slit is provided between any two adjacent first contact pieces; the second contact portion includes a plurality of second contact pieces arranged along the width direction of the Z-shaped main plate, and a dividing slit is provided between any two adjacent second contact pieces; the first contact pieces and the second contact pieces are arranged in a one-to-one correspondence; multiple sets of opening and closing limiting mechanisms are provided, and a set of opening and closing limiting mechanisms is provided between any corresponding first contact piece and second contact piece in any set; the plug-in end of the connecting bar is comb-shaped, and a sliding groove is provided between any two adjacent comb teeth, the number of sliding grooves is not less than the number of guide rods, and when the connecting bar is plugged into the contact opening, the sliding grooves are plugged into the guide rods in a one-to-one correspondence.

[0013] In some embodiments, the heat dissipation holes on the main plate include a first heat dissipation hole and a second heat dissipation hole, the first heat dissipation hole being located in the first guide portion, and the second heat dissipation hole being parallel to and aligned with the dividing seam of the first contact portion; the heat dissipation holes on the Z-shaped motherboard include a third heat dissipation hole and a fourth heat dissipation hole, the third heat dissipation hole being located in the second guide portion, and the fourth heat dissipation hole being parallel to and aligned with the dividing seam of the second contact portion.

[0014] This utility model also discloses an electrical connection structure, including a plurality of the above-mentioned electrical connection units and an insulating housing; the plurality of electrical connection units are arranged in an array inside the insulating housing, and the end of the wiring terminal away from the electrical connection assembly passes through the insulating housing and is exposed on the outside of the insulating housing.

[0015] The present invention achieves the following technical advantages over the prior art:

[0016] The electrical connection unit provided by this utility model has a heat dissipation structure on the opening and closing limiting mechanism or the contact unit. This structure dissipates heat from the contact unit, improving its heat dissipation performance and preventing overheating and burnout during prolonged operation. Simultaneously, the opening and closing limiting mechanism clamps the contact opening to the connecting strip, ensuring stable contact between the electrical connection assembly and the connecting strip. This prevents localized heat buildup due to poor contact, improving the operational safety and reliability of the equipment.

[0017] The electrical connection structure provided by this utility model has multiple electrical connection units, which can be used under high current conditions, and at the same time improves the operational safety and reliability of the electrical connection structure and equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the electrical connection unit provided in Embodiment 1 of this utility model;

[0020] Figure 2 An exploded view of the electrical connection unit provided in Embodiment 1 of this utility model;

[0021] Figure 3 A cross-sectional view along the length of the guide rod of the electrical connection unit provided in Embodiment 1 of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the upper mounting plate provided in Embodiment 1 of this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the lower mounting plate provided in Embodiment 1 of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the guide rod provided in Embodiment 1 of this utility model;

[0025] Figure 7 This is a schematic diagram of the first limiting structure provided in Embodiment 1 of the present utility model;

[0026] Figure 8 This is a schematic diagram of the second limiting structure provided in Embodiment 1 of the present utility model;

[0027] Figure 9This is a schematic diagram of the structure of the upper elastic sheet provided in Embodiment 1 of this utility model;

[0028] Figure 10 This is a schematic diagram of the structure of the lower elastic sheet provided in Embodiment 1 of this utility model;

[0029] Figure 11 This is a schematic diagram of the wiring terminal provided in Embodiment 1 of this utility model;

[0030] Figure 12 This is a schematic diagram of the assembly structure of the electrical connection unit and the insulating housing provided in Embodiment 2 of this utility model;

[0031] Figure 13 This is a schematic diagram of the overall structure on the back of the electrical connection structure provided in Embodiment 2 of this utility model.

[0032] In the diagram: 100-Electrical connection unit; 1-Insulating housing; 2-Terminal; 3-Electrical connection assembly; 301-Contact unit; 3011-Upper elastic sheet; 3012-Lower elastic sheet; 3013-First contact part; 3014-Second contact part; 302-Compression spring; 303-Guide rod; 3031-First limiting part; 3032-First support part; 3033-Second limiting part; 3034-Support step; 304-First limiting structure; 3041-First limiting hole; 3042-Second limiting hole; Three through holes; 305-Second limiting structure; 306-Upper mounting plate; 3061-First guide part; 3062-First block connecting part; 3063-First heat dissipation hole; 3064-Second heat dissipation hole; 3065-Fifth heat dissipation hole; 307-Lower mounting plate; 3071-Second guide part; 3072-Second block connecting part; 3073-Third heat dissipation hole; 3074-Fourth heat dissipation hole; 3075-Sixth heat dissipation hole; 308-Heat dissipation block; 4-Connecting row; 200-Electrical connection structure. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] The purpose of this invention is to provide an electrical connection unit and the electrical connection structure thereof, which has good heat dissipation, improves the operational safety and reliability of the equipment, and solves the problems existing in the prior art.

[0035] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figures 1-13The present invention will be further described in detail below with reference to specific embodiments.

[0036] Example 1

[0037] This embodiment provides an electrical connection unit 100, referenced... Figure 1 and Figure 11 The device includes a terminal block 2, an electrical connection assembly 3, and a connecting strip 4. The electrical connection assembly 3 includes a contact unit 301, an opening and closing limiting mechanism, and a heat dissipation structure. One end of the contact unit 301 is electrically connected to the terminal block 2, and the other end of the contact unit 301 is provided with a contact opening. The contact opening is used for pluggable connection with the connecting strip 4 and is electrically connected to the connecting strip 4 when connected. The opening and closing limiting mechanism is installed on the contact unit 301 and can clamp the connecting strip 4 with the contact opening to ensure that the upper and lower sides of the contact opening are in close contact with the upper and lower surfaces of the connecting strip 4. The heat dissipation structure is provided on the opening and closing limiting mechanism or the contact unit 301 and can dissipate heat from the contact unit 301. The electrical connection unit 100 provided in this embodiment has a heat dissipation structure on the opening and closing limiting mechanism or the contact unit 301. The heat dissipation structure dissipates heat from the contact unit 301, thereby improving the heat dissipation performance of the electrical connection unit 100 and preventing overheating and burnout caused by excessive heat generated during long-term operation of the electrical connection structure 200. At the same time, by setting the opening and closing limiting mechanism, the contact opening is pressed against both sides of the connecting row 4, ensuring a stable connection between the electrical connection component 3 and the connecting row 4, avoiding local heat rise caused by poor contact, and improving the operational safety and reliability of the equipment.

[0038] In some implementations, reference Figures 1-3 and Figures 9-10The contact unit 301 includes an upper elastic sheet 3011 and a lower elastic sheet 3012. The upper elastic sheet 3011 includes a first contact portion electrically connected to the terminal 2 and a first contact portion 3013 opposite to the first contact portion. The lower elastic sheet 3012 includes a second contact portion electrically connected to the terminal 2 and a second contact portion 3014 opposite to the second contact portion. The upper elastic sheet 3011 and the lower elastic sheet 3012 are arranged vertically at intervals, and a contact opening is formed between the first contact portion 3013 and the second contact portion 3014. An opening and closing limiting mechanism is provided at the contact opening to press the upper elastic sheet 3011 and the lower elastic sheet 3012 onto the upper and lower surfaces of the connecting row 4, respectively. A contact opening is formed between the upper elastic piece 3011 and the lower elastic piece 3012. By setting an opening and closing limiting mechanism through the contact opening, the upper elastic piece 3011 and the lower elastic piece 3012 are pressed against the upper and lower surfaces of the connecting strip 4. This ensures that the upper elastic piece 3011 and the lower elastic piece 3012 always maintain good contact with the connecting strip 4, avoiding poor contact as the connecting strip 4 is repeatedly inserted and removed or as the continuous use time increases. This also avoids overheating and burnout of the electrical connection unit 100 due to local temperature rise caused by poor contact, thus improving the operational safety and reliability of the equipment.

[0039] In some implementations, reference Figures 1-3The opening and closing limiting mechanism includes a guide rod 303, a first limiting structure 304, a second limiting structure 305, a compression spring 302, an upper mounting plate 306, and a lower mounting plate 307. The guide rod 303 includes a first limiting part 3031, a first support part 3032, and a second limiting part 3033 arranged sequentially from top to bottom. The upper elastic plate 3011 has a first through hole through which the first limiting part 3031 passes. The lower elastic plate 3012 has a second through hole through which the second limiting part 3033 passes. The first support portion 3032 is located between the first contact portion 3013 and the second contact portion 3014. The top and bottom of the first support portion 3032 are respectively provided with limiting steps that cooperate with the first and second through holes, so as to provide spaced support for the upper elastic sheet 3011 and the lower elastic sheet 3012 when the connecting row 4 separates from the contact opening. A first limiting structure 304 is provided on the upper surface of the upper elastic sheet 3011, and a first limiting portion 3031 penetrates the first limiting structure 304. The first limiting portion 3031 is provided with a support step 30 that cooperates with the upper surface of the first limiting structure 304. 34. The relative displacement between the guide rod 303 and the upper elastic plate 3011 is limited by the first limiting structure 304; the second limiting structure 305 is disposed on the second limiting part 3033 and protrudes outward from the second limiting part 3033; the compression spring 302 is fitted on the outside of the second limiting part 3033, and the compression spring 302 is located between the second contact part 3014 and the second limiting structure 305. The top of the compression spring 302 is connected to or abuts against the lower surface of the second contact part 3014, and the bottom of the compression spring 302 is connected to or abuts against the second limiting structure 305. When the connecting row 4 separates from the contact opening, the compression spring 302... 2. The device is in a compressed state; the upper mounting plate 306 is disposed above the upper elastic sheet 3011, and the upper mounting plate 306 includes a first connecting part connected to the first electrical contact part and a first guide part 3061 opposite to the first connecting part, the top end of the first limiting part 3031 slides vertically with the first guide part 3061; the lower mounting plate 307 is disposed below the lower elastic sheet 3012, and the lower mounting plate 307 includes a second connecting part connected to the second electrical contact part and a second guide part 3071 opposite to the second connecting part, the bottom end of the second limiting part 3033 slides vertically with the second guide part 3071. In this embodiment, the limiting steps are all outwardly protruding steps.By setting a guide rod 303, which includes a first support portion 3032, and the top and bottom of the first support portion 3032 are respectively provided with limiting steps that cooperate with the first through hole and the second through hole, the upper elastic piece 3011 and the lower elastic piece 3012 can be separated, and the connecting strip 4 can be inserted into the electrical connection assembly 3 through the contact opening formed by the upper elastic piece 3011 and the lower elastic piece 3012, thereby improving the insertion convenience of the electrical connection unit 100. In addition, by setting a first limiting structure 304 and a second limiting structure, 305, the first limiting structure 304 cooperates with the supporting step 3034 to restrict the relative displacement of the upper elastic piece 3011 and the guide rod 303, the second limiting structure 305 abuts against the bottom of the compression spring 302, and the compression spring 302 abuts against the lower surface of the second contact part 3014. The compression spring 302 can press the lower elastic piece 3012 upward, thereby pressing the first contact part 3013 and the second contact part 3014 against the upper and lower surfaces of the connecting row 4, ensuring good contact between the connecting row 4 and the contact unit 301. Furthermore, by setting the upper mounting plate 306 and the lower mounting plate 307, the upper elastic piece 3011 and the lower elastic piece 3012 can open and close within the space surrounded by the upper mounting plate 306 and the lower mounting plate 307 under the guidance of the guide rod 303, which can avoid breakage caused by excessive deformation of the upper elastic piece 3011 and the lower elastic piece 3012. In this embodiment, the first guide portion 3061 has a first sliding hole on the side facing the contact unit 301, which slides and engages with the top end of the first limiting portion 3031. When the top end of the first limiting portion 3031 touches the bottom of the first sliding hole, the upward movement of the guide rod 303 reaches its maximum. The second guide portion 3071 has a second sliding hole on the side facing the contact unit 301, which slides and engages with the bottom end of the second limiting portion 3033. When the top end of the first limiting portion 3031 touches the bottom of the hole, it can limit the upward movement of the guide rod 303 along its length. When the bottom end of the second limiting portion 3033 touches the bottom of the second sliding hole, the downward movement of the guide rod 303 reaches its maximum. In other embodiments, both the first sliding hole and the second sliding hole can be configured as through holes.

[0040] In some implementations, reference Figure 7The first limiting structure 304 includes a first limiting hole 3041 and a third through hole 3042. The first limiting hole 3041 and the third through hole 3042 are connected to form a T-shaped hole. After the supporting step 3034 passes through the third through hole 3042, it can engage with the first limiting hole 3041. By setting the first limiting hole 3041 and the third through hole 3042, the first limiting part 3031 of the guide rod 303 can pass through the third through hole 3042, and the supporting step 3034 engages with the first limiting hole 3041 to limit the relative displacement between the guide rod 303 and the upper elastic piece 3011. The first limiting structure 304 is simple and easy to process. In this embodiment, the first limiting structure 304 is a U-shaped plate. The first limiting hole 3041 and the third through hole 3042 are both set at the bottom of the U-shaped plate. When the two vertical plates of the U-shaped plate move upward to abut against the upper mounting plate 306, the upward movement of the guide rod 303 reaches its maximum value, which can limit the movement of the guide rod 303 and avoid fatigue fracture of the upper elastic plate 3011 and the lower elastic plate 3012 caused by excessive vertical movement of the guide rod 303.

[0041] In some implementations, reference Figure 8 The second limiting structure 305 is a limiting shaft, which vertically penetrates the second limiting part 3033, and both ends of the limiting shaft extend out of the second limiting part 3033. The two protruding parts of the limiting shaft can support and limit the bottom end of the compression spring 302. By setting the limiting shaft to penetrate the second limiting part 3033 to limit the bottom end of the compression spring 302, the compression spring 302 can be pressed tightly against the lower elastic plate 3012, so that the upper elastic plate 3011 and the lower elastic plate 3012 always maintain good contact with the connecting row 4. In this embodiment, the limiting shaft is a square column, and the contact surface between the limiting shaft and the compression spring 302 is a plane, which can make the contact surface between the compression spring 302 and the limiting shaft larger. The pressure direction applied by the limiting shaft to the compression spring 302 is not easily deviated, which can make the force applied by the compression spring 302 to the lower elastic plate 3012 more balanced and extend the service life of the lower elastic plate 3012.

[0042] In some embodiments, the heat dissipation structure includes heat dissipation holes, and heat dissipation holes are provided on both the lower mounting plate 307 and the lower mounting plate 307. In this embodiment, by providing heat dissipation holes, the air inside the electrical connection unit 100 can be allowed to circulate with the outside atmosphere to remove the heat generated by the contact unit 301, thereby improving the heat dissipation performance of the electrical connection unit 100.

[0043] In some implementations, reference Figures 4-5The heat dissipation structure also includes a heat sink 308; the upper mounting plate 306 includes a main plate with heat dissipation holes, a first connecting part at the first end of the main plate, a first guide part 3061 at the second end of the main plate, both sides of the first connecting part protruding partially outward in the width direction to form the heat sink 308; the bottom of the first connecting part protruding partially outward downward in the thickness direction of the first connecting part to form a first block-shaped connecting part 3062; the lower mounting plate 307 includes a Z-shaped motherboard with heat dissipation holes, a second connecting part at the first end of the Z-shaped motherboard, a second guide part 3071 at the second end, both sides of the second connecting part protruding partially outward in the width direction to form the heat sink 308; the bottom of the second connecting part protruding partially outward upward in the thickness direction of the second connecting part to form a second block-shaped connecting part 3072. In this embodiment, the heat dissipation structure also includes heat sinks 308. By making both sides of the first connecting portion and the second connecting portion partially protrude outwards to form heat sinks 308, the heat exchange area between the upper mounting plate 306 and the lower mounting plate 307 and the air is increased, thereby improving the heat dissipation performance of the electrical connection unit 100. The heat sinks 308 on both sides of the second connecting portion are symmetrically arranged. The cross-section of each heat sink 308 is an isosceles trapezoid, with the larger end of the isosceles trapezoid connecting to the second connecting portion and the smaller end facing outwards from the second connecting portion. This design facilitates the rapid dissipation of heat from the larger end to the smaller end of the heat sink 308, further improving the heat dissipation effect. The size of the heat sink 308 is related to... Figure 2 The dimensions of the contact surfaces of the connecting strip 4 and the lower elastic piece 3012, as well as the terminal 2 and the lower elastic piece 3012, are related. Figure 4 The heat sink 308 shown has X≥B2 and Y*Z≥2.5%*W2*B2.

[0044] In addition, in this embodiment, as Figure 1 and Figure 3As shown, after the upper mounting plate 306 and the lower mounting plate 307 are assembled on the upper and lower sides of the electrical connection assembly 3, a V-shaped opening is formed between the upper mounting plate 306 and the lower mounting plate 307. The upper mounting plate 306 includes a main plate and a first block-shaped connecting portion 3062 formed locally downwards along its own thickness direction. By providing the thickened first block-shaped connecting portion 3062, the upper mounting plate 306 has a more stable structure and is less prone to deformation under stress, effectively avoiding poor contact caused by uneven pressure on the upper elastic piece 3011 and the terminal 2 due to deformation of the upper mounting plate 306. Similarly, the lower mounting plate 307 includes a Z-shaped main plate and a second connecting portion. The bottom of the second connecting portion protrudes locally upwards along its own thickness direction to form a second block-shaped connecting portion 3072, making the structure of the lower mounting plate 307 more stable and less prone to deformation under stress, effectively avoiding poor contact caused by uneven pressure on the lower elastic piece 3012 and the terminal 2 due to deformation of the lower mounting plate 307. Except for the first end, the main plate is close to a thick plate structure with uniform thickness, generally greater than or equal to the thickness of a single plate. Figure 2 The width W1 shown is 15%. Except for the first end, the Z-shaped motherboard is approximately a thick plate structure with uniform thickness, generally greater than or equal to [a certain thickness]. Figure 2 The width W1 shown is 15%, and the thickness of the first block-shaped connecting part 3062 is greater than or equal to 15%. Figure 2 The width W2 shown is 20%, and the thickness of the second block-shaped connecting part 3072 is greater than or equal to 20%. Figure 2 The width W2 shown is 20% of the standard thin-plate mounting plate, making it more reliable and durable than conventional thin-plate mounting plates.

[0045] In some implementations, reference Figures 1-3 and Figures 9-10The first contact portion 3013 includes multiple first contact pieces arranged along the width direction of the main plate, and a dividing slit is provided between any two adjacent first contact pieces; the second contact portion 3014 includes multiple second contact pieces arranged along the width direction of the Z-shaped main plate, and a dividing slit is provided between any two adjacent second contact pieces; the first contact pieces and the second contact pieces are arranged in a one-to-one correspondence; multiple sets of opening and closing limiting mechanisms are provided, and an opening and closing limiting mechanism is provided between any corresponding first contact piece and second contact piece in any set; the plug-in end of the connecting strip 4 is comb-shaped, and a sliding groove is provided between any two adjacent comb teeth. The number of sliding grooves is not less than the number of guide rods 303. When the connecting strip 4 is plugged into the contact opening, the sliding groove is plugged into the guide rod 303 in a one-to-one correspondence. The larger the current capacity, the more first and second contact pieces there are, which reduces resistance and heat generation, preventing overheating damage to the electrical connection unit 100. In this embodiment, two first and two second contact pieces are provided. Correspondingly, two sets of opening and closing limiting mechanisms are provided, namely, two each of the first limiting structure 304, guide rod 303, compression spring 302, and second limiting structure 305. In some other embodiments, the first limiting structure 304 can also be a limiting plate with two first limiting holes 3041 and two third through holes 3042, and the second limiting structure 305 can also be a limiting shaft passing through the two guide rods 303. In addition, by providing a sliding groove, the connecting strip 4 can be correctly inserted under the guidance of the guide rod 303 when inserted into the contact opening, ensuring the maximum contact area between the connecting strip 4 and the contact opening, ensuring good contact, and avoiding local overheating problems caused by reduced contact area.

[0046] In some implementations, reference Figures 4-5The heat dissipation holes on the main plate include a first heat dissipation hole 3063 and a second heat dissipation hole 3064. The first heat dissipation hole 3063 is located in the first guide portion 3061, and the second heat dissipation hole 3064 is parallel to and aligned with the dividing seam of the first contact portion 3013. The heat dissipation holes on the Z-shaped motherboard include a third heat dissipation hole 3073 and a fourth heat dissipation hole 3074. The third heat dissipation hole 3073 is located in the second guide portion 3071, and the fourth heat dissipation hole 3074 is parallel to and aligned with the dividing seam of the second contact portion 3014. In this embodiment, the main plate is provided with a first heat dissipation hole 3063 and a second heat dissipation hole 3064, wherein the second heat dissipation hole 3064 is parallel to the dividing seam of the first contact portion 3013, and the Z-shaped motherboard is provided with a third heat dissipation hole 3073 and a fourth heat dissipation hole 3074, wherein the fourth heat dissipation hole 3074 is parallel to the dividing seam of the second contact portion 3014. In this embodiment, a through hole is provided between the partition between the first contact portion 3013 and the second contact portion 3014, allowing air to enter the electrical connection unit 100 through the second heat dissipation hole 3064 or the fourth heat dissipation hole 3074, circulate through the contact unit 301 via the through hole, and exit through the fourth heat dissipation hole or the second heat dissipation hole 3064, thereby enhancing the airflow within the electrical connection unit 100 and improving its heat dissipation performance. Furthermore, a fifth heat dissipation hole 3065, which combines heat dissipation and weight reduction functions, is provided on the main plate, and a sixth heat dissipation hole 3075, which also combines heat dissipation and weight reduction functions, is provided on the Z-shaped motherboard, to reduce the material cost of the upper mounting plate 306 and the lower mounting plate 307 while simultaneously improving the heat dissipation performance of the electrical connection unit 100.

[0047] In some other embodiments, reference is made to Figure 6 The first support part 3032 is provided with a guide structure on the side facing the sliding groove so that the sliding groove can be smoothly inserted into the contact opening along the guide structure, which improves the plugging and unplugging convenience of the electrical connection unit 100.

[0048] Example 2

[0049] This embodiment discloses an electrical connection structure 200, referencing... Figures 12-13The structure includes multiple electrical connection units 100 as described above and an insulating housing 1. The multiple electrical connection units 100 are arranged in an array inside the insulating housing 1. The end of the terminal 2 furthest from the electrical connection assembly 3 passes through the insulating housing 1 and is exposed on the outside of the insulating housing 1. The terminal 2 is electrically connected to the electrical connection assembly 3. The terminal 2 passes through the insulating housing 1, and the end of the terminal 2 furthest from the electrical connection assembly 3 passes through the insulating housing 1 and is exposed on the outside of the insulating housing 1. The power distribution element connects and disconnects from the electrical connection assembly 3 through the connecting strip 4 on it, realizing the connection and disconnection of the power distribution element from the power distribution network. The electrical connection structure 200 provided in this embodiment can be used under high current conditions, has good heat dissipation, and improves the operational safety and reliability of the electrical connection structure 200 and the equipment. In this embodiment, threaded holes are provided on the side wall of the first block-shaped connecting part 3062 of the upper mounting plate 306 and the side wall of the second block-shaped connecting part 3072 of the lower mounting plate 307. A through hole is provided on the upper housing 1. The upper mounting plate 306, the lower mounting plate 307 and the insulating housing 1 are detachably connected by bolts, thereby fixing the electrical connection unit 100 on the insulating housing 1.

[0050] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An electrical connection unit, comprising terminals, electrical connection components, and a connection bar, characterized in that: The electrical connection component includes: A contact unit, one end of which is electrically connected to the terminal block, and the other end of which is provided with a contact opening, which is used for pluggable connection with the connection bar and is electrically connected to the connection bar when connected; An opening and closing limiting mechanism, which passes through the contact unit, enables the contact opening to clamp the connecting row; and A heat dissipation structure is provided on the opening and closing limiting mechanism or the contact unit, and the heat dissipation structure can dissipate heat from the contact unit.

2. The electrical connection unit according to claim 1, characterized in that: The contact unit includes: The upper elastic sheet includes a first contact portion electrically connected to the terminal and a first contact portion opposite to the first contact portion; and The lower elastic sheet includes a second contact portion electrically connected to the terminal and a second contact portion opposite to the second contact portion; the upper elastic sheet and the lower elastic sheet are arranged vertically at intervals, and the contact opening is formed between the first contact portion and the second contact portion; The opening and closing limiting mechanism is inserted at the contact opening to press the upper elastic sheet and the lower elastic sheet against the upper and lower surfaces of the connecting row, respectively.

3. The electrical connection unit according to claim 2, characterized in that: The opening and closing limiting mechanism includes: The guide rod includes a first limiting part, a first supporting part, and a second limiting part arranged sequentially from top to bottom. The upper elastic sheet has a first through hole through which the first limiting part passes, and the first limiting part passes through the first through hole. The lower elastic sheet has a second through hole through which the second limiting part passes, and the second limiting part passes through the second through hole. The first supporting part is located between the first contact part and the second contact part, and the top and bottom of the first supporting part are respectively provided with limiting steps that cooperate with the first through hole and the second through hole, so as to provide spaced support for the upper elastic sheet and the lower elastic sheet when the connecting strip separates from the contact opening. A first limiting structure is disposed on the upper surface of the upper elastic sheet. The first limiting part penetrates the first limiting structure, and the first limiting part is provided with a support step that cooperates with the upper surface of the first limiting structure, so as to limit the relative displacement between the guide rod and the upper elastic sheet through the first limiting structure. The second limiting structure is disposed on the second limiting portion and protrudes outward from the second limiting portion; A compression spring is fitted on the outside of the second limiting part, and the compression spring is located between the second contact part and the second limiting structure. The top of the compression spring is connected to or abuts against the lower surface of the second contact part, and the bottom of the compression spring is connected to or abuts against the second limiting structure. When the connecting row separates from the contact opening, the compression spring is in a compressed state. An upper mounting plate is disposed above the upper elastic sheet, and the upper mounting plate includes a first connecting portion connected to the first electrical contact portion and a first guide portion opposite to the first connecting portion; the top end of the first limiting portion slides vertically with the first guide portion; and A lower mounting plate is disposed below the lower elastic sheet, and the lower mounting plate includes a second connecting part connected to the second electrical connection part and a second guide part opposite to the second connecting part, and the bottom end of the second limiting part slides up and down with the second guide part.

4. The electrical connection unit according to claim 3, characterized in that: The first limiting structure includes a first limiting hole and a third through hole. The first limiting hole and the third through hole are connected to form a T-shaped hole. After the supporting step passes through the third through hole, it can engage with the first limiting hole.

5. The electrical connection unit according to claim 3, characterized in that: The second limiting structure is a limiting shaft, which vertically penetrates the second limiting part, and both ends of the limiting shaft extend out of the second limiting part. The two protruding parts of the limiting shaft can support and limit the bottom end of the compression spring.

6. The electrical connection unit according to any one of claims 3 to 5, characterized in that: The heat dissipation structure includes heat dissipation holes, and the heat dissipation holes are provided on both the lower mounting plate and the lower mounting plate.

7. The electrical connection unit according to claim 6, characterized in that: The heat dissipation structure also includes a heat sink; The upper mounting plate includes a main plate, on which the heat dissipation holes are formed. The first end of the main plate is provided with the first connecting part. Both sides of the first connecting part in the width direction are partially protruding outward to form the heat dissipation block. The bottom of the first connecting part protrudes downward and outward along the thickness direction of the first connecting part to form a first block-shaped connecting part. The lower mounting plate includes a Z-shaped motherboard with heat dissipation holes. The first end of the Z-shaped motherboard is provided with the second connecting part. Both sides of the second connecting part protrude outward in the width direction to form the heat dissipation block. The bottom of the second connecting part protrudes outward in the thickness direction to form a second block-shaped connecting part.

8. The electrical connection unit according to claim 7, characterized in that: The first contact portion includes a plurality of first contact pieces arranged along the width direction of the main plate, and a dividing slit is provided between any two adjacent first contact pieces; The second contact portion includes a plurality of second contact pieces arranged along the width direction of the Z-shaped main board, and a dividing slit is provided between any two adjacent second contact pieces; the first contact piece and the second contact piece are arranged in a one-to-one correspondence; Multiple sets of the opening and closing limiting mechanism are provided, and each set of the opening and closing limiting mechanism is provided between the first contact piece and the second contact piece corresponding to any set; the plug-in end of the connecting bar is comb-shaped, and there is a sliding groove between any two adjacent comb teeth. The number of sliding grooves is not less than the number of guide rods. When the connecting bar is plugged into the contact opening, the sliding grooves are plugged into the guide rods one by one.

9. The electrical connection unit according to claim 8, characterized in that: The heat dissipation holes on the main plate include a first heat dissipation hole and a second heat dissipation hole. The first heat dissipation hole is located in the first guide portion, and the second heat dissipation hole is parallel to the dividing seam of the first contact portion and aligned with the dividing seam of the first contact portion. The heat dissipation holes on the Z-shaped motherboard include a third heat dissipation hole and a fourth heat dissipation hole. The third heat dissipation hole is located in the second guide portion, and the fourth heat dissipation hole is parallel to the dividing seam of the second contact portion and aligned with the dividing seam of the second contact portion.

10. An electrical connection structure, characterized in that: Includes the electrical connection units as described in any one of claims 1 to 9; and Insulating housing; Multiple electrical connection units are arranged in an array inside the insulating housing, with one end of the terminal away from the electrical connection assembly passing through the insulating housing and exposed on the outside of the insulating housing.

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