Electrical contact and electrical device comprising same
By designing electrical contact components with increased electrical contact area, the problem of unstable connection at the end of the circuit was solved, achieving stable current transmission and safe use of electrical appliances, and avoiding overheating and poor contact.
Patent Information
- Application Number
- CN202422903248.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Existing circuits suffer from problems such as unstable current, small contact area leading to overheating, poor contact, and other issues at the end connections and transitions. In particular, the bottleneck in line transitions can lead to insufficient current or overload, which may cause fires.
Design an electrical contact component to increase the electrical contact area, including a base and a wire through portion, wherein the wire through portion defines a through hole suitable for the wire to pass through, and the wire is in electrical contact; or the wire through hole and the wire through portion define a through groove suitable for the wire to pass through, and the electrical contact is formed by compression, thereby increasing the contact area.
It achieves stable current transmission, avoids localized heating and poor contact, improves the circuit's load capacity, and ensures the safe use of electrical appliances.
Smart Images
Figure CN223638636U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of electric connection, especially to an electric contact and an electric appliance device comprising the electric contact. BACKGROUND
[0002] The current line gradually ages in the use of life electricity and household appliances, the previous line is relatively thin and is close to the edge of replacement, and the increasing of high-power appliances is a serious test to the current electricity demand.
[0003] At present, the line structure has undergone earth-shaking changes, and the layout is relatively novel. The route is now self-explanatory from the previous complex, and all are direct terminals and super power lines. For example, the main household line generally uses super large lines. According to 10 square millimeters, two-phase can use 60 amperes, and the power is 13 kilowatts, and three-phase can reach 30 kilowatts; according to 16 square millimeters, two-phase can use 80 amperes, and the power is 17.6 kilowatts, and three-phase can reach 42 kilowatts.
[0004] However, there are serious problems in the end connection and switching. Whether it is a temporary switch and a control switch, or a plug-in control line, there is a bottleneck problem between the line conversion. It is necessary to maintain the stability of the current of the line and other switching parts, for example, the connection between the power line and the socket, the control switch or the electric connection of the panel is the weak point that needs to maintain the stability of the current. If the line is a super power line but the switching is weak, the super power line cannot play its due role, and the use of super power line causes unnecessary waste. In addition, improper connection can also cause insufficient current intensity, which can cause local heating, contact with surrounding plastic bulging, and serious deformation, resulting in combustion consequences of positive and negative line combination.
[0005] In addition, for the dialing on-off of the panel, the 1.5 square millimeter, 2.5 square millimeter, 4 square millimeter, 6 square millimeter or even 10 square millimeter wire is shared by one connector. Such a large number of specifications of wires are only pressed up and down by one screw, and the contact surface between the flat surface of the pressing screw and the surface of the circular line is small, so the current load capacity is poor, and the contact point is loaded with large current for a long time, which will cause gradual heating, bulging of the surrounding plastic, melting of the positive and negative poles, short circuit, damage of various appliances, and serious consequences of fire.
[0006] Moreover, the grounding row and the zero line row need to be additionally purchased and other special equipment.
[0007] The second round interface 1.5 square millimeter, 2.5 square millimeter, 4 square millimeter, 6 square millimeter are all fixed by 180-degree pressing screws. Similarly, the screw top flat surface is connected with the circular wire, and the contact surface is small for strong current passing through only one screw connection. The insufficient connection strength is the main reason for heating.
[0008] The third duckbill nose needle also needs to be additionally provided with an insulating sleeve, so that the operation is relatively troublesome, and the construction cost is high and time-consuming and labor-consuming by means of a hydraulic clamp. SUMMARY
[0009] To solve or alleviate at least one aspect of the problems in the prior art, increase the electrical contact area of the power line adapter or increase the convenience of operation, the utility model provides a kind of electrical contact piece of increasing electrical contact area, including:
[0010] The utility model provides an electrical contact piece of increasing electrical contact area, including:
[0011] The base is suitable for being extruded on one side;
[0012] The wire through portion is connected to the other side of the base opposite to the one side,
[0013] Wherein:
[0014] The wire through portion is defined as a through hole suitable for passing through the wire, and the through hole is suitable for extruding the wire passing through based on the extrusion force from one side to the other side to form electrical contact with the wire; or
[0015] The wire through portion is defined as a through slot suitable for passing through the wire, and the through slot is suitable for forming electrical contact with the wire passing through based on the extrusion from one side to the other side.
[0016] Optionally, the part of the through hole away from the other side of the base in the extrusion direction is provided with a slit extending along the wire through direction, and the slit width is less than the diameter of the through hole in the cross section perpendicular to the through direction.
[0017] Optionally, the slit width is less than one third of the diameter of the through hole.
[0018] Optionally, the wire through portion is thinner closer to the slit.
[0019] Optionally, the cross-sectional profile of the wire through portion perpendicular to the through direction has an arc shape.
[0020] Optionally, the middle part of the through hole is provided with a slit extending along the wire through direction, and the slit width is less than the diameter of the through hole in the cross section perpendicular to the through direction. Further optionally, the slit width is less than one third of the diameter of the through hole. Optionally, the cross-sectional profile of the wire through portion perpendicular to the through direction has an arc shape; or the cross-sectional profile of the wire through portion perpendicular to the through direction has a rectangular shape.
[0021] The utility model further provides an electrical device, including:
[0022] The electrical connection seat;
[0023] The above-mentioned electric contact piece for increasing the electric contact area is placed in the electric connection seat;
[0024] The fastener is mounted on the electric mounting seat and is adapted to apply a pressing force to the lower part of the base of the electric contact piece, so that the wire is adapted to be electrically connected with the through hole and the electric contact piece is electrically connected with the electric connection seat, or the wire is adapted to pass through the slot and the electric connection seat is electrically connected.
[0025] Optionally, the electric device includes at least one of an air switch, a socket, a distribution box, a distribution cabinet, an electric meter, a zero row, and a ground row.
[0026] The novel electric contact piece for increasing the electric contact area can effectively solve the bottleneck problem of line switching, and also provides convenience for switching operation in switching construction. Because the contact area is increased, the current can be increased to improve the load capacity of the entire line, and local heating is avoided, thereby avoiding high-temperature deformation of the connection and even combustion consequences caused by positive and negative electrode parallel connection.
[0027] In addition, based on the above technical solutions, the zero row and the ground row can be additionally provided with the electric current contact piece to provide strong protection for safe electricity use. BRIEF DESCRIPTION OF DRAWINGS
[0028] Figure 1 is a schematic perspective view of an electric contact piece according to an example embodiment of the present application;
[0029] Figure 2 is a front view of the electric contact piece in Figure 1
[0030] Figure 3 is a front view of an electric contact piece according to another example embodiment of the present application. DETAILED DESCRIPTION
[0031] The following description of the embodiments of the present application with reference to the accompanying drawings is intended to explain the general inventive concept of the present application, and should not be understood as a limitation of the present application.
[0032] As shown in Figures 1-3 , the electric contact piece includes:
[0033] The base 1 is adapted to be pressed on one side (the lower side in the figure);
[0034] The wire through part 2 is connected to the other side (i.e., the upper side in the figure) of the base 1 opposite to the one side,
[0035] Among them:
[0036] Referring to Figures 1-2 The wire-through portion 2 is defined with a through hole 21 adapted to pass through the wire, the through hole being adapted to press the wire (not shown) passing through based on the pressing force from one side to the other side, to form electrical contact with the wire; or
[0037] Referring to Figure 3 The wire-through portion 2 is defined with a through groove 22 adapted to pass through the wire, the through groove 22 being adapted to form electrical contact with the wire (not shown) passing through based on the pressing from one side to the other side.
[0038] As Figure 1 shown, in one embodiment, the upper part of the through hole 21 (i.e. the part of the through hole 21 on the other side of the base 1 away from the pressing direction) is provided with a slit 23 extending along the wire-through direction, the slit width of the slit 23 being less than the diameter of the through hole 1 in the cross section perpendicular to the through direction. In this way, after the wire is inserted into the through hole, the electrical contact piece is difficult to fall off from the wire, and then can be put into the electrical connection seat mentioned later together with the wire, thus also facilitating the operation in reality.
[0039] In the present utility model, the slit width is less than the diameter of the through hole 1, which can be less than one half, two thirds, and in a further embodiment, the slit width of the slit 23 is less than one third of the diameter of the through hole.
[0040] As Figure 1 shown, in one embodiment, the closer the wire-through portion 2 is to the slit 23, the thinner the thickness thereof.
[0041] As Figure 1 shown, in one embodiment, the cross-sectional profile of the wire-through portion 2 perpendicular to the through direction has an arc shape. As mentioned later, in the case that the electrical contact piece is placed in the electrical connection seat, and the surface of the electrical connection seat in contact with the electrical contact piece is arc-shaped or planar, the cross-sectional profile of the wire-through portion 2 perpendicular to the through direction having an arc shape helps to increase the electrical contact area.
[0042] Although not shown, the middle part of the through hole 21 (for example, in the middle of the through hole 21) is provided with a groove 24 extending along the wire-through direction, the groove 24 being adapted to press the wire (not shown) passing through based on the pressing force from one side to the other side, to form electrical contact with the wire. Figure 1In the embodiment, the side surface of the through hole is provided with a slit 23 extending along the wire through direction, and the slit width of the slit 23 is smaller than the diameter of the through hole in the cross section perpendicular to the through direction. As described above, the slit width is smaller than one third of the diameter of the through hole. At this time, when the through hole is squeezed from the upper and lower sides, for example, in the case where the edge of the slit can be deformed based on the material of the electrical contact, the side opposite to the slit is pressed and bent, and the slit can be narrowed, thereby increasing the electrical contact area with the wire. In further embodiments, the cross-sectional profile of the wire through portion along the direction perpendicular to the through direction has an arc shape; or the cross-sectional profile of the wire through portion along the direction perpendicular to the through direction has a rectangular shape. The arc shape or the rectangular shape here is adapted to the shape of the surface of the electrical connection seat abutting against the electrical contact mentioned later.
[0043] In the technical scheme of the utility model, the contact piece is installed between the wire and the adapter, which can improve the current intensity, increase the current passing, make the wire in the limit bearing range without heating; in addition, the power line or the wire is connected to the air switch through the electrical contact piece, which can effectively utilize the conductivity of the power line or the wire, form a large current, and improve the previous problems of poor contact caused by insufficient current and resulting in heating and short circuit.
[0044] In actual operation, the electrical contact piece such as Figure 1 may be first installed on the end of the wire or the power line (the insulator has been removed); then, the end of the wire together with the electrical contact piece is placed into the electrical connection seat for electrical connection, the electrical connection seat itself is conductive, and another wire is connected to lead out or lead in the current; then, in the case that the electrical contact piece is placed in position and the end of the wire is in the through hole, the fastening screw is tightened, so that the screw squeezes one side of the base of the electrical contact piece, thus the screw squeezes the electrical contact piece, so that the electrical contact piece also squeezes the wire to squeeze the electrical connection seat, and the fixation of the wire is completed. Alternatively, the electrical contact piece can be first placed into the electrical connection seat, then the wire is inserted, and then the wire is fixed by tightening the fastening screw.
[0045] The electrical connection seat here can be provided in an air switch, a socket, a distribution box, a power distribution cabinet, an electric meter, a ground row, a zero row, or other electrical devices that need to realize electrical connection.
[0046] Correspondingly, the utility model also provides an electrical device, which comprises:
[0047] The electrical connection seat;
[0048] The electrical contact piece described above is placed in the electrical connection seat;
[0049] The fastener is mounted on the electrical mounting seat and is adapted to apply a pressing force to the lower part of the base of the electrical contact, so that the wire is adapted to be electrically connected with the through hole and the electrical contact is electrically connected with the electrical connecting seat, or the wire is adapted to pass through the slot and the electrical connecting seat is electrically connected.
[0050] In an optional embodiment, the electrical device comprises at least one of an air switch, a socket, a distribution box, a distribution cabinet, an electric meter, a ground wire, and a zero wire.
[0051] Based on the technical scheme of the utility model, the electrical contact (mainly the size of the through hole or the size of the through slot) is tailor-made for the wire of various specifications, so that the circular arc of the power line or the wire is consistent with the arc surface height of the through hole or the through slot of the electrical contact, and the screw tip also contacts the plane height of the base of the electrical contact, which can effectively increase the electrical contact area, make the load current smooth, and avoid local poor contact.
[0052] In addition, in a thunderstorm, if the ground wire contact is poor and the strong current cannot be released temporarily, other devices are difficult to be protected.
[0053] In summary, the technical scheme of the utility model increases the current of the original circuit connection contact point, meets the needs of various electrical appliances, makes the conductive capacity of the power line or the wire reach the extreme, and enables the switch and the socket to be safely used within the effective range.
[0054] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that the embodiments can be changed and elements combined without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An electrical contact for increasing the electrical contact area, characterized by Comprising: a base, one side of the base adapted to be pressed; a wire-through portion connected to the other side of the base opposite to the one side, wherein: the wire-through portion defines a through-hole adapted to pass through the wire, the through-hole adapted to press the wire passing through based on a pressing force from the one side to the other side to form an electrical contact with the wire; or the wire-through portion defines a through-slot adapted to pass through the wire, the through-slot adapted to form an electrical contact with the wire passing through based on a pressing from the one side to the other side.
2. The electrical contact according to claim 1, wherein: a portion of the through-hole away from the other side of the base in the pressing direction is provided with a slit extending in the wire-through direction, the slit having a slit width smaller than a diameter of the through-hole in a cross-section perpendicular to the wire-through direction.
3. The electrical contact according to claim 2, wherein: the slit width is smaller than one third of the diameter of the through-hole.
4. The electrical contact according to claim 2, wherein: the wire-through portion is thinner closer to the slit.
5. The electrical contact according to claim 2, wherein: a cross-sectional profile of the wire-through portion perpendicular to the wire-through direction has an arc shape.
6. The electrical contact according to claim 1, wherein: a middle portion of the through-hole is provided with a slit extending in the wire-through direction, the slit having a slit width smaller than a diameter of the through-hole in a cross-section perpendicular to the wire-through direction.
7. The electrical contact according to claim 6, wherein: the slit width is smaller than one third of the diameter of the through-hole.
8. The electrical contact according to claim 6, wherein: a cross-sectional profile of the wire-through portion perpendicular to the wire-through direction has an arc shape; or a cross-sectional profile of the wire-through portion perpendicular to the wire-through direction has a rectangular shape. Comprising:
9. An electrical appliance device, characterized by an electrical connection seat; the electrical contact of any one of claims 1-8 to increase the electrical contact area, the electrical contact placed in the electrical connection seat; a fastener mounted on the electrical connection seat and adapted to apply a pressing force to a lower portion of the base of the electrical contact, such that: the wire is adapted to be electrically connected with the through-hole and the electrical contact is electrically connected with the electrical connection seat, or the wire is adapted to be electrically connected with the through-slot and the electrical connection seat.
10. The electrical device according to claim 9, wherein: the electrical device comprises at least one of an air switch, a socket, a distribution box, a distribution cabinet, an electric meter, a zero rail, and a ground rail.