Large-current DC power socket

Abstract

The utility model discloses a large-current DC power socket, which comprises a base, a shell, a negative pole piece, a signal detection terminal and a positive pole center pin, and is characterized in that the negative pole piece comprises a net-shaped contact part, and one side of the net-shaped contact part is provided with a notch; an arc-shaped sleeving part is arranged at the rear part of the net-shaped contact part, and a first negative pole supporting foot is arranged at the bottom of the arc-shaped sleeving part. The negative electrode assembly is arranged to be the annular elastic sheet formed by punching the high-conductivity oxygen-free copper, and a plurality of elastic contact points are formed in cooperation with the notches, so that the contact area is increased, and the risks of overheating and even electric arc caused by too high resistance are effectively reduced. And on the other hand, the plurality of negative pole supporting feet are adjusted from the existing bottom extending mode to the side extending mode, so that the thickness of the whole DC socket can be effectively reduced, and the utilization space used by the socket is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to power socket technical field especially a kind of high-current DC power socket. BACKGROUND

[0002] DC socket is a common socket for electric appliance, which is composed of horizontal socket, vertical socket, insulating base, V-shaped contact spring, directional keyway. The V-shaped contact spring of the traditional DC socket has only one contact point. When in use, the plug is inserted into the DC socket, and the contact spring is conducted through the contact point and the copper outer wall of the plug.

[0003] The conventional negative component of the existing DC socket usually adopts split strip spring structure, and the number of contact points is small and unevenly distributed. Limited by the conductivity of the material, the actual contact area is only 40%-60% of the theoretical value, which leads to a significant increase in contact resistance under high-current conditions, causing overheating and even arc risk. INVENTION CONTENTS

[0004] The utility model is aimed at the problem of the existing DC socket negative component that the number of contact points is small and unevenly distributed, and provides a high-current DC power socket.

[0005] A high-current DC power socket, comprising

[0006] a base, the base front side is provided with socket, the base includes lower base and the upper base that is buckled on lower base;

[0007] a shell, the shell is sleeved on the outside of the base;

[0008] a negative part, which is built-in in the base and located inside the socket, the negative part is provided as a cylindrical spring structure;

[0009] a signal detection terminal, which is installed on the lower base and located on one side along the axial direction of the socket;

[0010] a positive center pin, which is inserted from the rear end of the base, and the needle body part of the positive center pin is located inside the negative part;

[0011] The negative part includes a mesh contact part, one side of the mesh contact part is provided with a notch;The rear part of the mesh contact part is provided with an arc sleeve part, and the bottom of the arc sleeve part is provided with a first negative leg.

[0012] Further, the middle part of the mesh contact part is provided with an integrally formed reinforcing ring, the diameter of the reinforcing ring is smaller than the diameter of the mesh contact part, so that the two ends of the mesh contact part are contracted towards the center.

[0013] Further, the front side of the lower base is provided with a first arc-shaped slot, the rear part of the first arc-shaped slot is provided with an arc-shaped receiving part, the rear part of the arc-shaped receiving part is provided with a supporting part; the lower base is provided with a through slot;

[0014] The front side of the upper base is provided with a second arc-shaped slot; the first arc-shaped slot and the second arc-shaped slot are combined to form a jack;

[0015] The net-shaped contact part is located in the jack, the arc-shaped sleeve part is sleeved on the arc-shaped receiving part, and the first negative electrode leg penetrates through the through slot.

[0016] Further, the upper surface of the lower base is further provided with a first positioning column and a second positioning slot; the lower surface of the lower base is further provided with a second positioning column and a first positioning slot; the first positioning column and the first positioning slot are correspondingly arranged, and the second positioning column and the second positioning slot are correspondingly arranged.

[0017] Further, the positive electrode center needle comprises a needle body part, a fixing part and a connecting part which are integrally formed from front to rear; the middle part of the arc-shaped receiving part is further provided with a fixing slot, and the fixing part is inserted into the fixing slot.

[0018] Further, the shell comprises a main body, the main body 51 is in interference fit with the base; the front side bottom of the main body is provided with a second negative electrode leg on each side; the rear bottom of the shell is provided with a third negative electrode leg on each side.

[0019] Further, the rear side of the upper base is externally provided with a positioning groove; the upper surface of the main body is provided with an insertion piece, and the insertion piece is inserted into the positioning groove.

[0020] The beneficial effects of the utility model are: the negative electrode assembly is set as a ring-shaped elastic sheet formed by high-conductivity oxygen-free copper stamping, a plurality of elastic contact points are formed in cooperation with the notches, the contact area is improved, and the risk of overheating or electric arc caused by excessively high resistance is effectively reduced. On the other hand, by adjusting the plurality of negative electrode legs from the existing bottom discharge to the side discharge, the thickness of the entire DC socket can be effectively reduced, and the utilization space of the socket is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a whole structure schematic view of the socket;

[0022] Figure 2 It is an explosion structure schematic view of the socket;

[0023] Figure 3 It is a structure schematic view of the lower base;

[0024] Figure 4 It is a structure schematic view of the upper base;

[0025] Figure 5is another angle structure schematic view of the upper base;

[0026] Figure 6 is a negative piece structure schematic view;

[0027] Figure 7 is a shell structure schematic view;

[0028] In the figure, 1 - lower base, 11 - first arc-shaped slot, 12 - arc-shaped receiving part, 13 - support part, 14 - through slot, 15 - second positioning slot, 16 - first positioning column, 17 - mounting position, 18 - fixed slot, 100 - jack, 2 - upper base, 22 - positioning recess, 23 - second arc-shaped slot, 24 - first positioning slot, 25 - second positioning column, 3 - negative piece, 31 - extension, 32 - arc-shaped sleeve part, 33 - mesh contact part, 34 - first negative leg, 35 - notch, 36 - reinforcing ring, 4 - positive center needle, 41 - needle body part, 42 - fixed part, 43 - connecting part, 5 - shell, 51 - main body, 52 - second negative leg, 53 - third negative leg, 54 - insertion sheet, 6 - signal detection terminal. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail hereinafter with specific reference being made to the figures. The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. The present application can also be implemented or applied in other different embodiments, and each detail in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0030] It should be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the drawings without drawing the number, shape and size of the components in actual implementation. The shape, number and proportion of each component in actual implementation can be randomly changed, and the component layout pattern can also be more complex.

[0031] EMBODIMENT

[0032] As Figures 1-7As shown, a large current DC power socket includes a base, the base front side is provided with a socket 100, the base includes a lower base 1 and a upper base 2 buckled on the lower base 1; Specifically, the base is composed of the lower base 1 and the upper base 2 buckled. The lower base 1 is made of high temperature resistant nylon material injection molding, the front side is provided with a first arc slot 11, the rear side extends an arc receiving part 12 and a supporting part 13, the bottom is provided with a through slot 14; The upper base 2 is provided with a second arc slot 23 corresponding to the front side, and the first arc slot 11 of the lower base is combined to form the socket 100. The upper surface of the lower base 1 is provided with a first positioning column 16 and a second positioning groove 15, and the lower surface is provided with a second positioning column 25 and a first positioning groove 24, so as to realize the interlocking positioning when the upper and lower bases are buckled.

[0033] The negative part 3 is made of high-conductivity oxygen-free copper and is stamped and formed, comprising: a net-shaped contact part 33, which is in a cylindrical elastic sheet structure, the surface of which is stamped to form a grid, the intersection of the grid forms a plurality of elastic contact points, and an integrated reinforcing ring 36 is arranged in the middle part to make the two ends of the net-shaped structure shrink to the center, thereby enhancing the elastic retention; an arc sleeve part 32, which is extended from the rear end of the net-shaped contact part 33 and is in interference fit with the arc receiving part 12 of the lower base; an extension part 31 is integrally arranged at the rear part of the arc sleeve part 32, and the extension part 31 is overlapped outside the supporting part 13; a first negative leg 34, which is vertically extended from the bottom of the extension part 31 and forms a welding end after passing through the through slot 14 of the lower base.

[0034] The negative part 3 is arranged in the base and located inside the socket 100, and the negative part 3 is arranged in a cylindrical elastic sheet structure.

[0035] The signal detection terminal 6 is mounted on the lower base 1 and located on one side along the axial direction of the socket; The signal detection terminal 6 is mounted on the right side of the socket 100 of the lower base 1 along the axial direction, comprising an L-shaped elastic sheet, the contact end of which is parallel to the plug insertion path, and the detection end extends to the outside of the base to form a welding pin. Specifically, one side of the lower base 1 is provided with a mounting position 17, the mounting position 17 comprises a groove and a positioning pin arranged in the groove, which is used for placing and limiting the signal detection terminal 6, in this scheme, the signal detection terminal 6 is a prior art, and the specific structure of the signal detection terminal 6 will not be described in detail here.

[0036] The positive center needle 4 is inserted from the rear end of the base, and the needle body part 41 of the positive center needle 4 is located inside the negative part 3; The positive center needle 4 is made of beryllium copper alloy and is integrally bent and formed, comprising an integrally formed needle body part 41, the surface of which is gold plated, and extends from the center axis of the socket 100; The fixing part 42 is a rectangular cross-section structure, which is inserted into the fixing groove 18 of the lower base to ensure the stability of the positive center needle 4 after installation; The connecting part 43 extends to the rear end of the base to form a welding terminal.

[0037] A shell 5 is sleeved outside the base; the shell 5 comprises a main body 51 which is in interference fit with the base; second negative electrode legs 52 are arranged on both sides of the front bottom of the main body 51; third negative electrode legs 53 are arranged on both sides of the rear bottom of the shell 5. Specifically, the shell 5 is formed by stamping stainless steel and comprises the main body 51 which is sleeved outside the base and in interference fit with the base; the second negative electrode legs 52 are bent downward from both sides of the front bottom of the main body; the third negative electrode legs 53 extend from both sides of the rear bottom of the main body; and the insertion piece 54 is formed on the upper surface of the main body by stamping and is inserted into the positioning groove 22 of the upper base 2 to limit the axial displacement of the shell.

[0038] In the scheme, the first negative electrode leg 34, the second negative electrode leg 52 and the third negative electrode leg 53 work together to effectively increase the power of the socket.

[0039] The assembly and working principle of the embodiment are as follows:

[0040] Base assembly: press the arc-shaped sleeving part 32 of the negative electrode part 3 into the arc-shaped receiving part 12 of the lower base 1 so that the first negative electrode leg 34 passes through the through slot 14 and is fixed; insert the fixing part 42 of the positive electrode center pin 4 into the fixing groove 18 of the lower base, ensure that the pin body part 41 is coaxial with the insertion hole 100, insert the signal detection terminal 6 into the pre-set groove of the lower base so that the contact end is flush with the inner wall of the insertion hole 100, align the second arc-shaped groove 23 of the upper base 2 with the first arc-shaped groove 11 of the lower base, and complete the buckling through the interlocking of the first positioning column 16 and the first positioning groove 24 and the second positioning column 25 and the second positioning groove 15.

[0041] Shell assembly: sleeve the main body 51 of the shell 5 from the front of the base, press fit to the specified position through interference fit; then press the insertion piece 54 so that the insertion piece 54 of the shell is inserted into the positioning groove 22 of the upper base to limit the rotation of the shell; the second negative electrode leg 52 and the third negative electrode leg 53 are bent and formed to form a distributed power supply connection structure.

[0042] Working process: plug-in state: when the plug is inserted into the insertion hole 100, the outer wall forms a surface contact with the elastic contact points of the mesh contact part 33 of the negative electrode part 3, and the inner hole of the plug is closely fitted with the positive electrode center pin 41;

[0043] Current transmission: current passes through the positive electrode center pin 41→ the plug→ the negative electrode part mesh contact part 33→ the arc-shaped sleeving part 32→ the first negative electrode leg 34 conductive path output; signal detection: the L-shaped spring of the signal detection terminal 6 is pressed by the end face of the plug to produce displacement, triggering the detection signal.

[0044] In the scheme, the negative electrode adopts a ring-shaped elastic sheet and a high-conductivity copper material to increase the cross-sectional area and conductivity of the conductor contact through multiple contact points, and the positive electrode adopts a bending integrated center needle structure, abandoning the traditional positive electrode copper column and terminal riveting structure, thereby improving the load power of the product.

[0045] The above-described embodiments only express the specific implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A high-current DC power socket, characterized in that: include The base has an insertion hole (100) on its front side. The base includes a lower base (1) and an upper base (2) that is fastened to the lower base (1). The housing (5) is fitted onto the outside of the base; The negative electrode (3) is built into the base and located inside the socket (100). The negative electrode (3) is configured as a cylindrical spring sheet structure. Signal detection terminal (6), the signal detection terminal (6) is mounted on the lower base (1) and located on one side along the axial direction of the socket; Positive electrode center needle (4), the positive electrode center needle (4) is inserted from the rear end of the base, and the needle body part (41) of the positive electrode center needle (4) is located inside the negative electrode (3); The negative electrode component (3) includes a mesh contact portion (33), and a notch (35) is provided on one side of the mesh contact portion (33); an arc-shaped sleeve portion (32) is provided at the rear of the mesh contact portion (33), and a first negative electrode support foot (34) is provided at the bottom of the arc-shaped sleeve portion (32).

2. The high-current DC power socket according to claim 1, characterized in that: The mesh contact portion (33) is provided with an integrally formed reinforcing ring (36) in the middle. The diameter of the reinforcing ring (36) is smaller than the diameter of the mesh contact portion (33), so that the two ends of the mesh contact portion (33) are constricted towards the center.

3. A high-current DC power socket according to claim 1, characterized in that: The lower base (1) is provided with a first arc-shaped groove (11) on the front side, an arc-shaped receiving part (12) is provided at the rear of the first arc-shaped groove (11), and a supporting part (13) is provided at the rear of the arc-shaped receiving part (12); the lower base (1) is provided with a through groove (14). The upper base (2) is provided with a second arc-shaped groove (23) on the front side; the first arc-shaped groove (11) and the second arc-shaped groove (23) are joined together to form an insertion hole (100); The mesh contact part (33) is located inside the insertion hole (100), the arc-shaped sleeve part (32) is sleeved on the arc-shaped receiving part (12), and the first negative pole support (34) passes through the through groove (14).

4. A high-current DC power socket according to claim 3, characterized in that: The upper surface of the lower base (1) is also provided with a first positioning post (16) and a second positioning groove (15); the lower surface of the lower base (1) is also provided with a second positioning post (25) and a first positioning groove (24); the first positioning post (16) is correspondingly provided with the first positioning groove (24), and the second positioning post (25) is correspondingly provided with the second positioning groove (15).

5. A high-current DC power socket according to claim 3, characterized in that: The positive electrode center needle (4) includes a needle body part (41), a fixing part (42) and a connecting part (43) integrally formed from front to back; the arc-shaped receiving part (12) is also provided with a fixing groove (18) in the middle, and the fixing part (42) is inserted into the fixing groove (18).

6. A high-current DC power socket according to claim 1, characterized in that: The housing (5) includes a main body (51), which is interference-fitted with the base; the front bottom sides of the main body (51) are respectively provided with second negative electrode feet (52); the rear bottom sides of the housing (5) are provided with third negative electrode feet (53).

7. A high-current DC power socket according to claim 6, characterized in that: The upper base (2) has a positioning groove (22) on its rear side; the upper surface of the main body (51) has a insert (54) which is inserted into the positioning groove (22).

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