Simple direct current connector

Abstract

The utility model relates to a simple direct current connector, which comprises an upper connector, the upper connector comprises an upper connecting seat, a plugging cavity with an open bottom is arranged in the upper connecting seat, and a central pin, a first conductive metal ring and an isolating ring which are concentric but different in diameter are sequentially arranged in the plugging cavity from the center to the outside. A second conductive metal ring and a third conductive metal ring which are not higher than the isolating ring and the first conductive metal ring are respectively arranged on the inner side wall and the outer side wall of the isolating ring; the top surface of the upper connecting seat is provided with four groups of upper wiring terminal sheets which are respectively connected with the central pin, the first conductive metal ring, the second conductive metal ring and the third conductive metal ring, the connector can be used as a direct current connecting element, the size of the connector is small, the overall material consumption is reduced, the cost is lower, and the cost is reduced. Compared with other connectors, the connector has a price advantage.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of connector, concretely is a simple direct current connector. BACKGROUND

[0002] At present, the small household appliance commonly uses alternating current power supply, so the connector used on the small household appliance is large in size, so more raw materials are used in production, resulting in increased cost of the connector, so a connector applicable to alternating current and capable of reducing cost is required. SUMMARY

[0003] The utility model discloses a simple direct current connector which has the advantages of simple structure and reasonableness.

[0004] A simple direct current connector, comprising an upper connector, the upper connector comprising an upper connector seat, the upper connector seat being provided with a plug-in cavity with an open bottom, the plug-in cavity being provided with, from the center to the outside, a center plug pin, a first conductive metal ring and an isolation ring in sequence, the isolation ring having a second conductive metal ring and a third conductive metal ring on the inner side wall and the outer side wall, respectively, the second conductive metal ring and the third conductive metal ring being not higher than the isolation ring and the first conductive metal ring, and the upper connector seat being provided with four groups of upper terminal pieces connected to the center plug pin, the first conductive metal ring, the second conductive metal ring and the third conductive metal ring, respectively.

[0005] The utility model also has the following technical measures:

[0006] As a more specific scheme, the upper connector is provided with a plurality of wire clamping grooves with openings facing downward on the outer side wall, and the plurality of wire clamping grooves are arranged at intervals.

[0007] As a further scheme, the upper connector is provided with a root wall on the outer side wall, the root wall extends an L-shaped clamping plate, the L-shaped clamping plate and the root wall define a wire clamping groove therebetween, and the L-shaped clamping plate and the root wall extend a wire clamping protrusion on the opposite end faces, and the wire clamping protrusion is provided with a lead-in inclined surface on the upper part.

[0008] As a further scheme, the outer side wall of the upper connector seat is integrally connected with a plurality of first connecting portions and a plurality of second connecting portions, the plurality of first connecting portions and the plurality of second connecting portions are arranged at equal intervals along the circumference in an alternating manner, the first connecting portion is provided with a counterbore therein, the counterbore is provided with a stepped surface on the upper side and the lower side, and the second connecting portion is provided with a threaded hole.

[0009] As a further scheme, the bottom wall of the plug-in cavity extends a concentric but different-diameter inner insulating protrusion and an outer insulating protrusion, the outer insulating protrusion is higher than the inner insulating protrusion, and the bottom of the first conductive metal ring is clamped between the inner insulating protrusion and the outer insulating protrusion.

[0010] As a further scheme, the top surface of the upper connector seat is a flat surface, and a plurality of insulating walls extend on the flat surface, and a positioning slot is defined between two adjacent insulating walls and is open laterally, and the number of the plurality of positioning slots corresponds to the number of the upper terminal pieces, and the upper terminal pieces are assembled and connected in the respective positioning slots, and one of the insulating walls extends to the side wall of the upper connector seat and is separated between the two closest upper terminal pieces.

[0011] As a further scheme, the top surface of the upper connector seat extends a plurality of hot-pressing convex columns, and a positioning hole is formed on each of the upper terminal pieces and is adapted to the positioning and penetration of the hot-pressing convex columns, and the upper terminal pieces are fixedly connected to the top surface of the upper connector seat by being hot-pressed and flattened.

[0012] As a further scheme, the bottom surfaces of the second and third conductive metal rings are spaced apart from the bottom wall of the plug-in cavity, and the bottom surfaces of the second and third conductive metal rings integrally extend a connecting leg, the connecting leg extends out of the top surface of the upper connector seat, and one of the connecting legs is connected to the upper terminal piece.

[0013] As a further scheme, the lower connector further comprises a lower connector seat, and the lower connector seat upwardly extends three concentric plug-in rings with different diameters, and the adjacent two plug-in rings are spaced apart and form a plug-in slot, and the bottom surface of the lower connector seat is provided with a plurality of lower terminal pieces corresponding to the plug-in slots.

[0014] As a further scheme, the lower connector is provided with a plug spring in the first plug-in slot and in contact with the center pin, is provided with a top-pressing electric contact in the second plug-in slot and in contact with the first conductive metal ring, and is provided with two side-impact electric contacts on the inner and outer slot walls of the second plug-in slot and in contact with the second and third conductive metal rings, respectively.

[0015] The lower connector is provided with a drain port corresponding to the plug-in slot, and the lower terminal piece extends into the plug-in slot through the drain port and is connected to the plug spring, the top-pressing electric contact or the side-impact electric contact.

[0016] The beneficial effects of the utility model are as follows:

[0017] The simple direct current connector can be used for connecting elements of direct current, has small size, reduces the overall material, has lower cost and higher price advantage compared with other connectors. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The drawing shows the exploded structure of the connector.

[0019] Figure 2 It is the upper connector structure schematic view of the utility model.

[0020] Figure 3 It is the upper connector local amplification structure schematic view of the utility model.

[0021] Figure 4 It is the upper connector local partial structure schematic view of the utility model Figure 1 .

[0022] Figure 5 It is the upper connector local partial structure schematic view of the utility model Figure 2 .

[0023] Figure 6 It is the lower connector structure schematic view of the utility model.

[0024] Figure 7 It is the lower connector overhead structure schematic view of the utility model.

[0025] Figure 8 It is the lower connector another angle structure schematic view of the utility model. DETAILED DESCRIPTION

[0026] The utility model is further explained below in connection with the drawings and embodiments.

[0027] Referring to Figures 1 to 5 The upper connector A includes an upper connector seat 1, the upper connector seat 1 is internally provided with an insertion cavity 101 with an open bottom, the insertion cavity 101 is internally provided with a center insertion pin 2, a first conductive metal ring 3 and an isolation ring 102 in sequence from the center to the outside, the isolation ring 102 is internally provided with a second conductive metal ring 4 and a third conductive metal ring 5 on the inner side wall and the outer side wall, the second conductive metal ring 4 and the third conductive metal ring 5 are not higher than the isolation ring 102 and the first conductive metal ring 3, the upper surface of the upper connector seat 1 is provided with four groups of upper terminal pieces 6 connected with the center insertion pin 2, the first conductive metal ring 3, the second conductive metal ring 4 and the third conductive metal ring 5 respectively.

[0028] The connector can be used for the connection element of direct current, the volume of the connector is small, the overall material is reduced, so that the cost is lower, and the price advantage is more than other connectors.

[0029] The outer side wall of the upper connector A is provided with a plurality of wire clamping grooves 103 with downward openings, the plurality of wire clamping grooves 103 are arranged at intervals, after installing the connector, the power line or the data line can be fixed in the wire clamping groove 103, so that the wiring around the upper connector A is more neat and orderly, and the household appliance grade using the connector is improved.

[0030] Specifically, the upper connector A is provided with a root wall 104 on the outer side wall, the L-shaped clamping plate 7 extends from the root wall 104, and a wire clamping groove 103 is defined between the L-shaped clamping plate 7 and the root wall 104. The L-shaped clamping plate 7 and the root wall 104 extend a wire clamping block 8 on the opposite end face, and the upper part of the wire clamping block 8 is provided with a lead-in slope 81. The lead-in slope 81 helps to insert the power line or data line into the two opposite wire clamping blocks 8, and the two wire clamping blocks 8 narrow the distance of the wire clamping groove 103, so that the power line or data line can be clamped in the wire clamping groove 103 and is not easy to loosen.

[0031] The outer side wall of the upper connector seat 1 is integrally connected with a plurality of first connecting parts 9 and a plurality of second connecting parts 10, and the plurality of first connecting parts 9 and the plurality of second connecting parts 10 are alternately arranged at equal intervals in the circumferential direction. The first connecting part 9 is provided with a counterbore 901, and the upper side and the lower side of the counterbore 901 are provided with a stepped surface 902. The second connecting part 10 is provided with a threaded hole 1001.

[0032] The counterbore 901 can assemble and connect the connector to the bottom surface of the heating disc of the small household appliance. The stepped surface 902 on the upper side of the counterbore 901 can position the connecting column on the heating disc, and the stepped surface 902 on the lower side can completely embed the head of the fastener in the stepped surface of the first connecting part 9. The second connecting part 10 can assemble and connect the bottom shell of the small household appliance to the connector.

[0033] The bottom wall of the plug cavity 101 extends a concentric but different-diameter inner insulating convex ring 105 and an outer insulating convex ring 106, the outer insulating convex ring 106 is higher than the inner insulating convex ring 105, and the bottom of the first conductive metal ring 3 is clamped between the inner insulating convex ring 105 and the outer insulating convex ring 106. The inner insulating convex ring 105 and the outer insulating convex ring 106 can increase the creepage distance between the first conductive metal ring 3 and the center pin 2 or the second conductive metal ring 4, and improve the safety of the connector.

[0034] The top surface of the upper connector seat 1 is a flat surface, and a multi-faceted insulating wall 11 extends on the flat surface. Adjacent two insulating walls 11 define a laterally open positioning groove 107, and the number of the plurality of positioning grooves 107 corresponds to the number of the upper terminal pieces 6. The upper terminal pieces 6 are assembled and connected in the respective positioning grooves 107. One insulating wall 11 extends to the side wall of the upper connector seat 1 (this part is marked as M) and is separated between the two closest upper terminal pieces 6. The creepage distance between the upper terminal pieces 6 is increased, and the safety of the connector is improved.

[0035] The top surface of the upper connecting seat 1 extends with several hot-pressing convex columns 12, and each upper terminal sheet 6 is provided with a positioning hole 601 suitable for positioning and penetrating the hot-pressing convex column 12, and the upper terminal sheet 6 is fixedly connected to the top surface of the upper connecting seat 1 by being hot-pressed and flattened by the hot-pressing convex column 12; the structure is simple, the upper terminal sheet 6 is fixed by the hot-pressing convex column 12, the connector can be assembled on full-automatic production equipment, the production efficiency is improved, and the cost is reduced.

[0036] The bottom surfaces of the second and third conductive metal rings 4 and 5 are arranged at intervals from the bottom wall of the plug-in cavity 101, the bottom surfaces of the second and third conductive metal rings 4 and 5 integrally extend with connecting legs 12, the connecting legs 12 extend out of the top surface of the upper connecting seat 1, and one of the connecting legs 12 is connected to the upper terminal sheet 6; the structure can reduce the material of the second and third conductive metal rings 4 and 5, and reduce the cost of the connector.

[0037] Referring to Figures 6 to 8 The lower connector B also includes a lower connecting seat 13, the lower connecting seat 13 upwardly extends with three concentric plug-in rings 14 with different diameters, the adjacent two plug-in rings 14 are arranged at intervals and form a plug-in slot 131, and the bottom surface of the lower connecting seat 13 is provided with a plurality of lower terminal sheets 15 corresponding to the plug-in slots 131; the structure of the lower connector B is small in size, can also reduce the overall material, and further reduce the cost.

[0038] In the embodiment, the first plug-in slot 131 of the lower connector B is provided with a plug spring 151 in contact with the center pin 2, the second plug-in slot 131 is provided with a top-pressing electric contact 152 in contact with the first conductive metal ring 3, and the inner and outer slot walls of the second plug-in slot 131 are provided with two side-impact electric contacts 153 in contact with the second and third conductive metal rings 4 and 5, respectively; because the lower connector B is small in size, the electric contact parts in different ways make the lower connector B keep compact without affecting the electric connection effect.

[0039] Specifically, the lower connector B is provided with a drain port 132 corresponding to the plug-in slot 131, and the lower terminal sheet 15 extends into the plug-in slot 131 through the drain port 132 and is connected with the plug spring 151, the top-pressing electric contact 152 or the side-impact electric contact 153.

[0040] In addition, the lower connector B is provided with a plurality of counterbores 901 along the outer periphery of the plug-in ring 14, and the counterbores 901 are also provided with stepped surfaces 902 on the upper side and the lower side.

[0041] The above is the preferred scheme of the utility model, and the basic principle, main features and advantages of the utility model are displayed and described. Those skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for the purpose of illustrating the principle of the utility model. The utility model can have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and equivalents.

Claims

1. A simple DC connector, comprising an upper connector, characterized in that: The upper connector includes an upper connector base, which has an open-bottomed insertion cavity. Inside the insertion cavity, from the center outwards, there are concentric but different diameter center pins, a first conductive metal ring, and an isolation ring. The inner and outer walls of the isolation ring are respectively provided with a second conductive metal ring and a third conductive metal ring, neither of which is higher than the isolation ring and the first conductive metal ring. The top surface of the upper connector base is provided with four sets of upper terminal pieces that are respectively connected to the center pin, the first conductive metal ring, the second conductive metal ring, and the third conductive metal ring.

2. A simplified DC connector according to claim 1, characterized in that: The outer wall of the upper connector is provided with several downward-facing wire-locking slots, which are spaced apart from each other.

3. A simplified DC connector according to claim 2, characterized in that: The upper connector has a root wall on its outer side wall. The root wall extends with an L-shaped clamp, and a wire-locking groove is defined between the L-shaped clamp and the root wall. Wire-locking protrusions extend from opposite end faces of the L-shaped clamp and the root wall, and an inlet ramp is provided on the upper part of the wire-locking protrusions.

4. A simplified DC connector according to claim 1, characterized in that: The outer wall of the upper connecting seat is integrally connected with a number of first connecting parts and a number of second connecting parts. The number of first connecting parts and the number of second connecting parts are arranged alternately at equal intervals along the circumference. The first connecting parts are provided with countersunk holes, and the upper and lower sides of the countersunk holes are provided with stepped surfaces. The second connecting parts are provided with threaded holes.

5. A simplified DC connector according to claim 1, characterized in that: The bottom wall of the insertion cavity has concentric inner insulating rings and outer insulating rings of different diameters. The outer insulating ring is higher than the inner insulating ring, and the bottom of the first conductive metal ring is sandwiched between the inner insulating ring and the outer insulating ring.

6. A simplified DC connector according to claim 1, characterized in that: The top surface of the upper connector is a flat surface, and multiple insulating walls extend from the flat surface. A laterally open positioning groove is defined between two adjacent insulating walls. The number of positioning grooves corresponds to the number of upper terminal pieces. The upper terminal pieces are assembled and connected in their respective positioning grooves. One insulating wall extends to the side wall of the upper connector and is separated between the two closest upper terminal pieces.

7. A simplified DC connector according to claim 1, characterized in that: The top surface of the upper connector extends with several hot-pressed protrusions. Each upper terminal piece is provided with a positioning hole suitable for the hot-pressed protrusions to be positioned and inserted. The upper terminal piece is fixedly connected to the top surface of the upper connector by the hot-pressed protrusions being flattened by hot pressing.

8. A simplified DC connector according to claim 1, characterized in that: The bottom surfaces of the second and third conductive metal rings are spaced apart from the bottom wall of the insertion cavity. The bottom surfaces of the second and third conductive metal rings are integrally extended with connecting feet, which extend out of the top surface of the upper connector and one of the connecting feet is connected to the upper terminal block.

9. A simplified DC connector according to any one of claims 1-8, characterized in that: It also includes a lower connector, which includes a lower connector base. The lower connector base extends upward with three concentric but different diameter plug rings. Adjacent plug rings are spaced apart to form insertion slots. The bottom surface of the lower connector base is provided with a number of lower terminal pieces corresponding to each insertion slot.

10. A simplified DC connector according to claim 9, characterized in that: The lower connector has a spring in the first insertion groove that contacts the center pin, a top-pressing electrical contact in the second insertion groove that contacts the first conductive metal ring, and two side-touching electrical contacts on the inner and outer groove walls of the second insertion groove that contact the second and third conductive metal rings respectively. The lower connector has a drain port corresponding to the insertion slot. The lower terminal piece extends into the insertion slot through the drain port and is connected to the spring, or the top-pressing electrical contact, or the side-touching electrical contact.

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