Power adapter plug

Abstract

The utility model discloses a plug of a power adapter, which relates to the technical field of power adapters and comprises a shell, a plug body and a plug body. The plug pin is connected to the shell, and at least part of the plug pin extends into the accommodating cavity; the circuit board is arranged in the accommodating cavity, a golden finger contact is arranged on the circuit board, and a plurality of contacts are arranged on the golden finger contact at intervals; the conductive elastic sheet is clamped and connected in the accommodating cavity, the conductive elastic sheet is provided with a first connecting end corresponding to the pin and a second connecting end corresponding to the golden finger contact, and at least two abutting elastic sheets are arranged on the second connecting end at intervals, so that one abutting elastic sheet abuts against the plurality of contacts; therefore, the contact area of the conductive elastic sheet and the golden finger contact can be increased, so that the contact impedance of the conductive elastic sheet and the PCB is effectively reduced, and the power adapter plug can meet the requirement of high-voltage thunder and lightning tests.

Description

Technical Field

[0001] The utility model relates to the technical field of power adapters, in particular to a power adapter plug. Background Art

[0002] There are many types of power plugs for charger power adapters. Depending on the power of the charger power adapter, the connectors between the power plug input and the circuit board are also different. Currently, there are two types: one is a welding soldering process, and the other is a spring contact form.

[0003] The soldering process has the following disadvantages: First, a layer of solder paste needs to be applied during soldering. During the soldering process, the solder paste will produce toxic gases, causing air pollution and certain impacts on the human body. At the same time, the soldering process requires manual operation, wasting a lot of labor; second, copper is expensive, and the use of copper will increase production costs; third, the soldering process is difficult to master, the production efficiency is low, the operation is inconvenient, and it is difficult to avoid the risk of short circuit explosion caused by residual tin beads and tin slag, which affects the quality of power supply products. Therefore, the soldering process is not suitable for the needs of mechanized production, which has been a technical problem that has not been solved for a long time.

[0004] The use of spring clip contact has the following disadvantages: the current spring clips use whole-piece contact, the thickness of the tin layer on the circuit board is uneven, there are bumps, and the contact between the spring clip and the circuit board is a point-to-point contact, resulting in a small contact area and large contact resistance, and there is a risk of heat, high temperature, high pressure and lightning strikes.

[0005] Therefore, it is necessary to propose an improved technical solution to solve the above problems. Utility Model Content

[0006] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0007] A power adapter plug, comprising:

[0008] A housing having a receiving cavity therein;

[0009] A plug pin, the plug pin is connected to the housing, and the plug pin at least partially extends into the accommodating cavity;

[0010] A circuit board, the circuit board is placed in the accommodating cavity, the circuit board is provided with a gold finger contact, and a plurality of contacts are provided at intervals on the gold finger contact;

[0011] A conductive spring sheet is snap-connected in the accommodating cavity, and has a first connection end corresponding to the pin and a second connection end corresponding to the gold finger contact, wherein at least two abutting spring sheets are arranged at intervals on the second connection end, so that one abutting spring sheet abuts against several contacts.

[0012] As a further solution of the utility model: a first clamping hole and a second clamping hole are provided on the conductive spring sheet, a fixing column which is clamped and matched with the first clamping hole is provided in the accommodating cavity, and the end of the pin extending into the accommodating cavity is clamped and matched with the second clamping hole.

[0013] As a further solution of the utility model: the conductive spring comprises a first connecting portion, a second connecting portion, an inclined portion connected between the first connecting portion and the second connecting portion, and an inclined bending portion connected to an end of the second connecting portion away from the inclined portion;

[0014] The first connection portion forms a first connection end corresponding to the pin, the inclined bending portion forms a second connection end corresponding to the gold finger contact, and the first connection portion and the second connection portion are connected to the housing;

[0015] The first connecting part and the second connecting part are respectively provided with the first clamping hole, and the first connecting part is also provided with the second clamping hole.

[0016] As a further solution of the utility model: the inclined bending portion forms an arched abutting spring piece upward relative to the second connecting portion, and there is a spacing space between the abutting spring piece and the second connecting portion.

[0017] As a further solution of the utility model: the abutting spring sheet has a contact surface, so as to contact with a plurality of contact points through the contact surface.

[0018] As a further solution of the utility model: the width of the second connection end is greater than or equal to the width of the gold finger contact.

[0019] As a further solution of the utility model: the plug pins are provided with two, and the conductive springs and the gold finger contacts are provided with two corresponding ones;

[0020] Among them, six contacts are arranged at intervals on the gold finger contact, and the two abutting springs abut three contacts respectively.

[0021] As a further solution of the utility model: the accommodating cavity is provided with an assembly groove corresponding to the plug pin, the plug pin is embedded in the assembly groove, and the lower end of the plug pin passes through the assembly groove and penetrates out of the housing;

[0022] Wherein, the upper end of the pin forms a clamping joint portion which is clamped and matched with the second clamping hole.

[0023] As a further solution of the utility model: a plurality of grooves arranged at intervals are provided along the side surface of the clamping joint, and a clamping opening connected to the second clamping hole is provided on the first connecting part and around the second clamping hole.

[0024] As a further solution of the utility model: the accommodating cavity includes a first assembly cavity corresponding to the circuit board and a second assembly cavity corresponding to the conductive spring, wherein the second assembly cavity is opened on the inner bottom surface of the first assembly cavity.

[0025] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0026] 1) By using conductive springs to complete the conductive contact between the pins and the gold finger contacts on the circuit board, there is no need to use soldering, which not only helps to improve production efficiency and reduce production costs, but also effectively avoids product quality problems caused by the difficulty in mastering the soldering process;

[0027] 2) By arranging a plurality of contacts at intervals on the gold finger contact, and synchronously combining the conductive spring sheet with at least two contact spring sheets at intervals on the second connection end corresponding to the gold finger contact, the width of the gold finger contact and the conductive spring sheet can be appropriately increased according to this setting characteristic, so that the contact area between the conductive spring sheet and the gold finger contact can be increased, thereby effectively reducing the contact impedance between the conductive spring sheet and the PCB, so that the power adapter plug can meet the lightning test of higher voltage;

[0028] 3) By setting at least two abutting spring sheets at intervals, one abutting spring sheet can abut against several contact points, thereby effectively increasing the contact area between the conductive spring sheet and the gold finger contact point by means of surface and multi-point contact, and forming a multi-surface and multi-point contact mode according to at least two abutting spring sheets at intervals, while further effectively increasing the contact area between the conductive spring sheet and the gold finger contact point, it is possible to avoid poor contact between the contact point and the abutting spring sheet due to uneven contact thickness on the circuit board, thereby achieving the purpose of ensuring effective contact between the conductive spring sheet and the gold finger contact point;

[0029] 4) The conductive spring can be connected in the accommodating cavity by snapping, and in particular, the conductive spring can have a first snap-fitting hole for snapping with the housing, and can also have a second snap-fitting hole for snapping with the pin, so that the conductive spring can be in contact with the pin by snapping simultaneously, and the overall assembly is simple, which is not only beneficial to production efficiency, but also can realize automated production;

[0030] 5) By dividing the conductive spring sheet into a first connection portion, an inclined portion, a second connection portion and an inclined bending portion which are connected in sequence, the straight first connection portion and the second connection portion can effectively ensure the clamping strength between the conductive spring sheet and the shell and the pin, and the inclined portion can be in a relatively tight state under the fixation of the first connection portion and the second connection portion, thereby effectively enhancing the elastic performance of the inclined bending portion, and then effectively increasing the interference between the circuit board gold finger contact and the conductive spring sheet, thereby improving the contact reliability, that is, ensuring the effective contact between the conductive spring sheet and the gold finger contact.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0033] Figure 1 It is a structural schematic diagram of the utility model;

[0034] Figure 2 It is a schematic diagram of the structure of the conductive spring and the housing being clamped together in the utility model;

[0035] Figure 3 It is a schematic diagram of the structure of the circuit board, the conductive spring and the pins of the utility model;

[0036] Figure 4 It is a structural schematic diagram of the accommodating cavity of the utility model;

[0037] Figure 5 It is a schematic diagram of the structure of the conductive spring of the utility model;

[0038] Figure 6 It is a structural schematic diagram of the plug pin of the utility model.

[0039] The reference numerals and names in the figures are as follows:

[0040] 1. Shell; 2. Accommodating cavity; 3. Pin; 4. Circuit board; 5. Gold finger contact; 6. Contact; 7. Conductive spring; 8. Abutting spring; 9. First card hole; 10. Second card hole; 11. Fixed column; 12. First connecting part; 13. Second connecting part; 14. Inclined part; 15. Inclined bending part; 16. Assembly groove; 17. Card joint part; 18. Groove; 19. Bayonet; 20. First assembly cavity; 21. Second assembly cavity. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] See also Figure 1-6 In an embodiment of the utility model, a power adapter plug includes:

[0043] A housing 1 having a receiving cavity 2 therein;

[0044] A plug pin 3, the plug pin 3 is connected to the housing 1, and the plug pin 3 at least partially extends into the accommodating cavity 2;

[0045] A circuit board 4 is placed in the accommodating cavity 2, a gold finger contact 5 is arranged on the circuit board 4, and a plurality of contacts 6 are arranged at intervals on the gold finger contact 5;

[0046] The conductive spring clip 7 is snap-connected in the accommodating cavity 2, and has a first connection end corresponding to the pin 3 and a second connection end corresponding to the gold finger contact 5, wherein at least two abutting spring clips 8 are arranged at intervals on the second connection end, so that one abutting spring clip 8 abuts against several contacts 6.

[0047] In the technical solution of the utility model, the conductive spring piece 7 is used to complete the conductive contact between the pin 3 and the gold finger contact 5 on the circuit board 4, so there is no need to use soldering, which is not only conducive to improving production efficiency and reducing production costs, but also can effectively avoid product quality problems caused by the difficulty in mastering the soldering process; by arranging a plurality of contacts 6 at intervals on the gold finger contact 5, and synchronously combining the conductive spring piece 7 with at least two abutting spring pieces 8 arranged at intervals on the second connection end of the gold finger contact 5 corresponding to the gold finger contact 5, the width of the gold finger contact 5 and the conductive spring piece 7 can be appropriately increased according to this setting characteristic, so that the contact area between the conductive spring piece 7 and the gold finger contact 5 can be increased, thereby effectively reducing the conductive spring piece 7 and the gold finger contact 5. The contact impedance of the PCB enables the power adapter plug to meet the lightning test of a higher voltage. At the same time, at least two abutting springs 8 are arranged at intervals, so that one abutting spring 8 can abut against several contacts 6, thereby effectively increasing the contact area between the conductive spring 7 and the gold finger contact 5 through surface and multi-point contact. In addition, a multi-surface and multi-point contact method can be formed according to at least two abutting springs 8 arranged at intervals. While further effectively increasing the contact area between the conductive spring 7 and the gold finger contact 5, it is possible to avoid poor contact between the contact 6 and the abutting spring 8 due to different thicknesses of the contacts 6 on the circuit board 4, thereby achieving the purpose of ensuring effective contact between the conductive spring 7 and the gold finger contact 5.

[0048] More specifically, in the embodiment of the utility model, two pins 3 are provided, and two conductive springs 7 and two gold finger contacts 5 are provided respectively; wherein, six contacts 6 are arranged at intervals on the gold finger contact 5, and the two abutting springs 8 abut three contacts 6 respectively.

[0049] More specifically, in the embodiment of the utility model, the conductive spring sheet 7 is provided with a first card hole 9 and a second card hole 10, the accommodating cavity 2 is provided with a fixing column 11 which is snap-fitted with the first card hole 9, and the end of the pin 3 extending into the accommodating cavity 2 is snap-fitted with the second card hole 10.

[0050] The conductive spring piece 7 can be connected in the accommodating cavity 2 by snapping, and in particular, the conductive spring piece 7 can have a first snap-fitting hole 9 that snaps into place with the shell 1, and can also have a second snap-fitting hole 10 that snaps into place with the pin 3, so that the conductive spring piece 7 can be in contact with the pin 3 by snapping simultaneously. The overall assembly is simple, which is not only beneficial to production efficiency, but also can realize automated production.

[0051] More specifically, in the embodiment of the utility model, the conductive spring 7 includes a first connecting portion 12, a second connecting portion 13, an inclined portion 14 connected between the first connecting portion 12 and the second connecting portion 13, and an inclined bending portion 15 connected to an end of the second connecting portion 13 away from the inclined portion 14;

[0052] The first connection portion 12 forms a first connection end corresponding to the pin 3, the inclined bending portion 15 forms a second connection end corresponding to the gold finger contact 5, and the first connection portion 12 and the second connection portion 13 are connected to the housing 1;

[0053] The first connecting portion 12 and the second connecting portion 13 are respectively provided with the first clamping hole 9 , and the first connecting portion 12 is also provided with the second clamping hole 10 .

[0054] By dividing the conductive spring piece 7 into a first connection portion 12, an inclined portion 14, a second connection portion 13 and an inclined bending portion 15 which are connected in sequence, the first connection portion 12 and the second connection portion 13 can be understood to be straight, that is, the straight first connection portion 12 and the second connection portion 13 can effectively ensure the clamping strength between the conductive spring piece 7 and the shell 1 and the pin 3, and the inclined portion 14 can be in a relatively tight state under the fixation of the first connection portion 12 and the second connection portion 13, thereby effectively enhancing the elastic performance of the inclined bending portion 15, and then effectively increasing the interference between the gold finger contact 5 of the circuit board 4 and the conductive spring piece 7, thereby improving the contact reliability, that is, ensuring the effective contact between the conductive spring piece 7 and the gold finger contact 5.

[0055] More specifically, in the embodiment of the present invention, the inclined bending portion 15 forms the abutting elastic piece 8 in an upward arch shape relative to the second connecting portion 13 , and a spacing space is provided between the abutting elastic piece 8 and the second connecting portion 13 .

[0056] Through this arrangement, the spacing space formed between the abutting elastic sheet 8 and the second connecting portion 13 can satisfy the space required for the abutting elastic sheet 8 to undergo elastic deformation.

[0057] More specifically, in the embodiment of the present invention, the abutting spring sheet 8 has a contact surface, so as to contact with a plurality of contact points 6 through the contact surface.

[0058] As described above, the contact surface is used to realize the surface and multi-point contact, thereby achieving the purpose of effectively increasing the contact area between the conductive spring 7 and the gold finger contact 5 .

[0059] More specifically, in the embodiment of the present invention, the width of the second connection end is greater than or equal to the width of the gold finger contact 5 .

[0060] Through this arrangement, it is effectively ensured that the width of the conductive spring piece 7 is substantially consistent with the width of the gold finger contact 5 , thereby effectively ensuring effective contact between the conductive spring piece 7 and the gold finger contact 5 .

[0061] More specifically, in the embodiment of the utility model, the accommodating cavity 2 is provided with an assembly groove 16 corresponding to the plug pin 3, the plug pin 3 is embedded in the assembly groove 16, and the lower end of the plug pin 3 passes through the assembly groove 16 to the outside of the housing 1; wherein the upper end of the plug pin 3 forms a clamping joint 17 that is clamped and matched with the second clamping hole 10;

[0062] A plurality of grooves 18 are provided at intervals along the side surface of the clamping joint 17 , and a clamping opening 19 communicating with the second clamping hole 10 is provided on the first connecting portion 12 and around the second clamping hole 10 .

[0063] By setting the snap-in slots 19 around the second snap-in hole 10, when the conductive spring piece 7 is snap-fitted with the plug pin 3, the second snap-in hole 10 can obtain space for deformation through the snap-in slots 19. At the same time, the setting of multiple grooves 18 on the snap-in joint 17 of the plug pin 3 is conducive to increasing the snap-in area between the snap-in joint 17 and the second snap-in hole 10, so that the connection between the conductive spring piece 7 and the plug pin 3 is more firmly established, and the contact between the conductive spring piece 7 and the plug pin 3 is fully guaranteed.

[0064] More specifically, in the embodiment of the present invention, the accommodating cavity 2 includes a first assembly cavity 20 corresponding to the circuit board 4 and a second assembly cavity 21 corresponding to the conductive spring 7 , wherein the second assembly cavity 21 is opened on the inner bottom surface of the first assembly cavity 20 .

[0065] By providing the first assembly cavity 20 and the second assembly cavity 21 , the assembly positions of the conductive spring sheet 7 and the circuit board 4 can be effectively located, which is beneficial for the precise contact between the conductive spring sheet 7 and the gold finger contacts 5 of the circuit board 4 .

[0066] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A power adapter plug, characterized in that: Included are: A housing having a receiving cavity therein; A plug pin, the plug pin is connected to the housing, and the plug pin at least partially extends into the accommodating cavity; A circuit board, the circuit board is placed in the accommodating cavity, the circuit board is provided with a gold finger contact, and the gold finger contact is provided with a plurality of contacts at intervals; A conductive spring sheet is snap-connected in the accommodating cavity, and has a first connection end corresponding to the pin and a second connection end corresponding to the gold finger contact, wherein at least two abutting spring sheets are arranged at intervals on the second connection end, so that one abutting spring sheet abuts against several contacts.

2. A power adapter plug according to claim 1, characterized in that: The conductive spring sheet is provided with a first clamping hole and a second clamping hole, the accommodating cavity is provided with a fixing column which is clamped and matched with the first clamping hole, and the end of the pin extending into the accommodating cavity is clamped and matched with the second clamping hole.

3. A power adapter plug according to claim 2, characterized in that: The conductive spring sheet includes a first connecting portion, a second connecting portion, an inclined portion connected between the first connecting portion and the second connecting portion, and an inclined bending portion connected to an end of the second connecting portion away from the inclined portion; The first connection portion forms a first connection end corresponding to the pin, the inclined bending portion forms a second connection end corresponding to the gold finger contact, and the first connection portion and the second connection portion are connected to the housing; The first connecting part and the second connecting part are respectively provided with the first clamping hole, and the first connecting part is also provided with the second clamping hole.

4. A power adapter plug according to claim 3, characterized in that: The inclined bending portion is upwardly formed into the abutting elastic piece in an arched shape relative to the second connecting portion, and a spacing space is provided between the abutting elastic piece and the second connecting portion.

5. A power adapter plug according to claim 1 or 4, characterized in that: The abutting elastic sheet has a contact surface, so as to contact with a plurality of contact points through the contact surface.

6. The power adapter plug according to claim 1, characterized in that: The width of the second connecting end is greater than or equal to the width of the gold finger contact.

7. The power adapter plug according to claim 1, characterized in that: The plug pins are provided with two, and the conductive springs and the gold finger contacts are provided with two corresponding ones; Among them, six contacts are arranged at intervals on the gold finger contact, and the two abutting springs abut three contacts respectively.

8. The power adapter plug according to claim 3, characterized in that: The accommodating cavity is provided with an assembly groove corresponding to the plug pin, the plug pin is embedded in the assembly groove, and the lower end of the plug pin passes through the assembly groove and is exposed to the outside of the shell; Wherein, the upper end of the plug pin forms a clamping joint portion which is clamped and matched with the second clamping hole.

9. A power adapter plug according to claim 8, characterized in that: A plurality of grooves arranged at intervals are provided along the side surface of the clamping joint portion, and a clamping opening communicating with the second clamping hole is provided on the first connecting portion and around the second clamping hole.

10. The power adapter plug according to claim 1, characterized in that: The accommodating cavity includes a first assembly cavity corresponding to the circuit board and a second assembly cavity corresponding to the conductive spring sheet, wherein the second assembly cavity is opened on the inner bottom surface of the first assembly cavity.

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