Power adapter

Abstract

The utility model relates to a power adapter, which mainly comprises a shell, a connecting wire and a cover body, an accommodating cavity is arranged in the shell, one end of the accommodating cavity is provided with an opening, the shell is provided with a mounting groove, the groove bottom wall of the mounting groove is provided with an abdicating opening, and the abdicating opening is communicated with the accommodating cavity. The connecting line is provided with a connector part, the connector part is arranged in the installation groove and penetrates through the receding opening to stretch into the containing cavity, and the peripheral wall of the connector part is attached to the groove wall of the installation groove. The cover body is connected to the shell and seals the opening, a limiting structure is arranged between the cover body and the connector part, the limiting structure is arranged in the containing cavity, the limiting structure comprises a limiting block and a limiting groove which are arranged on the cover body and the connector part respectively, and the limiting block is inserted into the limiting groove so as to prevent the connector part from being separated from the containing cavity from the receding opening. The cover body is connected to the shell, and the connecting line and the cover body are connected through the limiting structure, so that the connecting line can be stably connected to the shell.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply appliances, and more particularly to a power adapter. Background Art

[0002] A power adapter is a power supply conversion device for small portable electronic devices. Its working principle is to convert the input alternating current into direct current output. A power adapter generally includes a housing, a circuit board, a cable, and a plug. To improve production efficiency, each component is usually produced separately and then assembled together later. Among them, as an important component connecting the power supply and the electronic device, the connection between the cable and the housing directly affects the use safety of the power adapter.

[0003] A power adapter is disclosed in the related art, which includes a connecting wire and a housing. The connecting wire is provided with a joint portion, and the joint portion is provided with a first annular slot. The lower side of the housing is provided with a socket for inserting the joint portion, and the wall of the socket is clamped in the first annular slot to connect the connecting wire to the housing. Specifically, the first annular slot is formed between two spaced annular flanges, and the sizes of both annular flanges are larger than the size of the socket. During the process of inserting the joint portion into the socket, one of the annular flanges is slightly deformed and enters the housing through the socket, and the other annular flange is located outside the housing, so that the wall of the socket can be clamped in the first annular slot. However, since the annular flange located inside the housing has deformable characteristics, the annular flange may be deformed when the connecting wire is pulled by an external force, and the joint portion may be disengaged from the housing, so that the connecting wire cannot be stably connected to the housing. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a power adapter, and the technical problem to be solved is: how to improve the connection stability between the housing and the connecting wire.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions.

[0006] The present utility model provides a power adapter, which includes: a housing, a receiving cavity is provided inside the housing, one end of the receiving cavity is provided with an opening, an installation groove is provided on the housing, a relief opening is provided on the bottom wall of the installation groove, and the relief opening communicates with the receiving cavity; a connecting wire, which is provided with a connector head, the connector head is arranged in the installation groove and extends into the receiving cavity through the relief opening, and the outer peripheral wall of the connector head is attached to the wall of the installation groove; a cover body, the cover body is connected to the housing and closes the opening, a limiting structure is arranged between the cover body and the connector head, the limiting structure is arranged in the receiving cavity, and the limiting structure includes a limiting block and a limiting groove respectively arranged on the cover body and the connector head, and the limiting block is inserted into the limiting groove to prevent the connector head from detaching from the receiving cavity through the relief opening.

[0007] In some embodiments of the present application, two of the limiting structures are provided at intervals; the two limiting structures are respectively arranged on opposite sides of the connector head.

[0008] In some embodiments of the present application, the limiting block includes a connecting strip and a limiting strip connected to each other; the connecting strip abuts against the inner wall of the receiving cavity, and the limiting strip is inserted into the limiting groove.

[0009] In some embodiments of the present application, the limiting groove is arranged on the connector head, the limiting block is arranged on the cover body, and the limiting strip is arranged on the side surface of the connecting strip facing the limiting groove.

[0010] In some embodiments of the present application, the connecting strip includes a first part and a second part; the first part is connected between the second part and the cover body, and the first part abuts against the inner wall of the receiving cavity; one surface of the second part facing the inner wall of the receiving cavity is inclined, and the size of the end of the second part connected to one end of the first part is larger than the size of the other end of the second part.

[0011] In some embodiments of the present application, the connector head includes a body and a seal; the body extends into the receiving cavity through the relief opening, the seal is sleeved outside the body, and the outer peripheral wall of the seal is attached to the wall of the installation groove.

[0012] In some embodiments of the present application, the body includes a first body and a second body connected to each other, the size of the first body is less than or equal to the relief opening, the size of the second body is larger than the size of the relief opening; the first body extends into the receiving cavity through the relief opening; the second body is arranged in the installation groove and is sleeved with the seal.

[0013] In some embodiments of the present application, a positioning structure is provided between the joint portion and the inner wall of the relief opening; the positioning structure includes a positioning groove and a positioning block respectively provided on the joint portion and the inner wall of the relief opening, and the positioning block is clamped in the positioning groove.

[0014] In some embodiments of the present application, a stepped portion in a ring shape is provided at the opening of the accommodating cavity, and insertion strips are provided in a ring on the stepped portion; a boss is provided in a ring on the cover body, and a slot in a ring shape is provided on the boss; the boss is lapped on the stepped portion, and the insertion strips are inserted into the slots.

[0015] In some embodiments of the present application, the housing and the cover body are connected by an ultrasonic welding process.

[0016] It can be seen from the above technical solutions that the embodiments of the present utility model have at least the following advantages and positive effects:

[0017] In the power adapter of the embodiment of the present utility model, the joint portion is placed in the installation groove, and the joint portion is pushed inward so that a part of the joint portion passes through the relief opening and enters the accommodating cavity. Subsequently, the limiting block and the limiting groove are aligned. During the process of the cover body closing the opening, the limiting block and the limiting groove are gradually inserted in place, so as to establish the connection between the joint portion and the cover body. Finally, the cover body is connected to the housing. Since the cover body is connected to the housing, the connecting wire is connected to the cover body through the joint portion, and the joint portion of the connecting wire is restricted from separating from the accommodating cavity. Therefore, a stable connection relationship can be established between the connecting wire and the housing, improving the safety of the power adapter. Further, when the cover body is connected to the main body, the cover body closes the opening of the accommodating cavity, and the outer peripheral wall of the joint portion fits against the groove wall of the installation groove, so that effective sealing can be achieved between the cover body and the housing and between the cover body and the connecting wire, further improving the safety performance of the power adapter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By considering the following detailed description of the preferred embodiments of the present utility model in conjunction with the drawings, various objectives, features, and advantages of the present utility model will become more obvious. The drawings are only exemplary diagrams of the present utility model and are not necessarily drawn to scale. In the drawings, the same reference numerals always represent the same or similar components. Among them:

[0019] Figure 1 is a schematic structural diagram of a power adapter shown according to an exemplary embodiment.

[0020] Figure 2 is Figure 1 exploded structural diagram of...

[0021] Figure 3 is Figure 1 cross-sectional view of...

[0022] Figure 4 is Figure 2 a schematic structural diagram of the cover body and the connecting wire in

[0023] Figure 5 is Figure 2 a schematic structural diagram of the housing and the connecting wire in

[0024] Figure 6 is Figure 2 a schematic structural diagram of the cover body in

[0025] Figure 7 is Figure 2 a schematic structural diagram of the housing in

[0026] Figure 8 is Figure 1 an enlarged schematic structural diagram of the connection part between the housing and the cover body in

[0027] Explanation of the reference numerals in the drawings is as follows: 1. Housing; 11. Accommodation cavity; 111. Opening; 12. Installation groove; 121. Relief opening; 122. Positioning block; 13. Step portion; 131. Insertion bar;

[0028] 2. Connecting wire; 21. Connection head; 211. Body; 2111. First body; 2112. Second body; 2113. Limiting groove; 2114. Positioning groove; 212. Sealing member;

[0029] 3. Cover body; 31. Limiting block; 311. Connection bar; 3111. First part; 3112. Second part; 312. Limiting bar; 32. Insertion pin; 33. Boss; 331. Slot; Detailed implementation manners

[0030] Although the present utility model can be easily embodied in different forms of embodiments, only some specific embodiments are shown in the drawings and will be described in detail in this specification. At the same time, it can be understood that this specification should be regarded as a demonstration of the principle of the present utility model, rather than aiming to limit the present utility model to what is described herein.

[0031] Therefore, a feature pointed out in this specification will be used to illustrate one of the features of one embodiment of the present utility model, rather than implying that each embodiment of the present utility model must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to show possible system designs, these features can also be used in other combinations not explicitly described. Therefore, unless otherwise stated, the described combination is not intended to be limiting.

[0032] In the embodiments shown in the drawings, the indication of directions (such as up, down, left, right, front, and back) is used to explain that the structures and movements of various elements of the present utility model are not absolute but relative. When these elements are in the positions shown in the drawings, these descriptions are appropriate. If the descriptions of the positions of these elements change, the indication of these directions also changes accordingly.

[0033] Please refer to Figures 1 to 3 , a power adapter provided by an embodiment of the present utility model mainly includes a housing 1, a connecting wire 2, and a cover 3. A receiving cavity 11 is provided in the housing 1. One end of the receiving cavity 11 has an opening 111. An installation groove 12 is provided on the housing 1. A relief opening 121 is provided on the bottom wall of the installation groove 12, and the relief opening 121 communicates with the receiving cavity 11. The connecting wire 2 is provided with a connection head 21. The connection head 21 is arranged in the installation groove 12 and extends into the receiving cavity 11 through the relief opening 121. The outer peripheral wall of the connection head 21 fits against the wall of the installation groove 12. The cover 3 is connected to the housing 1 and closes the opening 111. A limiting structure is provided between the cover 3 and the connection head 21. The limiting structure is arranged in the receiving cavity 11. The limiting structure includes a limiting block 31 and a limiting groove 2113 respectively arranged on the cover 3 and the connection head 21. The limiting block 31 is inserted into the limiting groove 2113 to prevent the connection head 21 from detaching from the receiving cavity 11 through the relief opening 121.

[0034] In the power adapter according to the embodiment of the present utility model, the connection head 21 is placed in the installation groove 12, and the connection head 21 is pushed inward so that a part of the connection head 21 passes through the relief opening 121 and enters the receiving cavity 11. Subsequently, the limiting block 31 and the limiting groove 2113 are aligned. During the process of the cover 3 closing the opening 111, the limiting block 31 and the limiting groove 2113 are gradually inserted in place, thereby establishing the connection between the connection head 21 and the cover 3. Finally, the cover 3 is connected to the housing 1. Since the cover 3 is connected to the housing 1, the connecting wire 2 is connected to the cover 3 through the connection head 21, and the connection head 21 of the connecting wire 2 is restricted from detaching from the receiving cavity 11. Therefore, a stable connection relationship can be established between the connecting wire 2 and the housing 1, improving the safety of the power adapter. Further, when the cover 3 is connected to the connection body 211, the cover 3 closes the opening 111 of the receiving cavity 11, and the outer peripheral wall of the connection head 21 fits against the wall of the installation groove 12, so that effective sealing can be achieved between the cover 3 and the housing 1 and between the cover 3 and the connecting wire 2, further improving the safety performance of the power adapter.

[0035] It can be conceived that the specific setting manner of the limiting structure can be that the limiting block 31 is arranged on the cover 3 and the limiting groove 2113 is arranged on the connection head 21. It can also be that the limiting block 31 is arranged on the connection head 21 and the limiting groove 2113 is arranged on the cover 3.

[0036] Please refer to Figure 2 andFigure 3 There are two limiting structures provided at intervals. The two limiting structures are respectively arranged on both sides of the joint part 21. By arranging the limiting structures on both sides of the joint part 21, the connection points between the cover body 3 and the joint part 21 are increased, so that the joint part 21 is less likely to become loose or fall off in the housing 1. In this embodiment, the two limiting structures are respectively arranged on the opposite sides of the joint part 21, and the connection is made from the opposite sides, providing a more balanced connection force.

[0037] Please refer to Figures 2 to 4 As shown, the limiting block 31 includes a connecting strip 311 and a limiting strip 312 connected to each other. The connecting strip 311 abuts against the inner wall of the accommodating cavity 11, and the limiting strip 312 is inserted into the limiting groove 2113. On the one hand, the design of the connecting strip 311 provides additional support and enhances the stability of the limiting structure. On the other hand, the design of the connecting strip 311 can effectively transmit stress, reducing the possibility of the limiting structure becoming loose or damaged due to external impact. In this embodiment, the connecting strip 311 abuts against the inner wall of the accommodating cavity 11 communicating with the relief opening 121, and the connecting strip 311 supports between the joint part 21 and the inner wall where the relief opening 121 is located, further restricting the joint part 21 from detaching from the accommodating cavity 11 through the relief opening 121.

[0038] Please refer to Figures 2 to 4 As shown, in one embodiment of the above-mentioned limiting groove 2113 and the limiting block 31, the limiting groove 2113 is arranged on the joint part 21, the limiting block 31 is arranged on the cover body 3, and the limiting strip 312 is arranged on the side surface of the connecting strip 311 facing the limiting groove 2113. Since the joint part 21 needs to pass through the relief opening 121 and enter the accommodating cavity 11, arranging the limiting groove 2113 on the joint part 21 is more conducive to reducing the size of the opening 111 of the relief opening 121, and it is easier for the joint part 21 to enter the accommodating cavity 11, making the assembly more labor-saving and the structural design simpler.

[0039] In one embodiment of the above-mentioned limiting groove 2113 and the limiting block 31, an extension strip extending into the accommodating cavity 11 is provided on the cover body 3, and the limiting groove 2113 is opened on the extension strip, and the limiting block 31 is arranged on the joint part 21. The arrangement of the extension strip enables the limiting block 31 arranged on the joint part 21 not to be set too large to achieve a firm connection between the joint part 21 and the cover body 3. This embodiment is an example where the limiting groove 2113 is arranged on the cover body 3, the limiting block 31 is arranged on the joint part 21 and is convenient for the assembly of the two.

[0040] Please refer to Figure 4, the connecting bar 311 includes a first part 3111 and a second part 3112. The first part 3111 is connected between the second part 3112 and the cover 3, and the first part 3111 abuts against the inner wall of the accommodating cavity 11. One side of the second part 3112 facing the inner wall of the accommodating cavity 11 is inclined, and the dimension of the end of the second part 3112 connected to one end of the first part 3111 is larger than the dimension of the other end of the second part 3112. The inclined design of the inclined surface of the second part 3112 can reduce friction, which really helps the limiting block 31 to be smoothly pushed into the limiting groove 2113 during assembly. When continuing to push inward, the first part 3111 begins to abut against the inner wall, enhancing the stability of the connection.

[0041] Please refer to Figures 2 to 5 , the connection head 21 includes a main body 211 and a seal 212. The main body 211 passes through the relief opening 121 and extends into the accommodating cavity 11. The seal 212 is sleeved outside the main body 211, and the outer peripheral wall of the seal 212 fits against the wall of the installation groove 12. The design of the seal 212 effectively prevents the intrusion of dust and moisture, improving the sealing performance between the connecting wire 2 and the housing 1.

[0042] Please refer to Figure 2 and Figure 5 , the main body 211 includes a connected first main body 2111 and a second main body 2112. The dimension of the first main body 2111 is less than or equal to that of the relief opening 121, and the dimension of the second main body 2112 is larger than that of the relief opening 121. The first main body 2111 passes through the relief opening 121 and extends into the accommodating cavity 11. The second main body 2112 is arranged in the installation groove 12 and is sleeved with a seal 212. On the one hand, since the dimension of the first main body 2111 is less than or equal to that of the relief opening 121, it provides the feasibility for the connection head 21 to pass through the relief opening 121 and extend into the accommodating cavity 11. On the other hand, since the dimension of the second main body 2112 is larger than that of the relief opening 121, it ensures that part of the connection head 21 remains in the installation groove 12, and the second main body 2112 can effectively block the relief opening 121.

[0043] Please refer to Figure 5 , a positioning structure is provided between the connection head 21 and the inner wall of the relief opening 121. The positioning structure includes a positioning groove 2114 and a positioning block 122 respectively arranged on the inner wall of the connection head 21 and the relief opening 121, and the positioning block 122 is clamped in the positioning groove 2114. Through the cooperation of the positioning groove 2114 and the positioning block 122, rapid positioning and assembly can be achieved, improving work efficiency. In this embodiment, the positioning groove 2114 is arranged on the connection head 21, and the positioning block 122 protrudes from the inner wall of the relief opening 121.

[0044] Please refer to Figures 6 to 8, a stepped portion 13 in a ring shape is provided at the opening 111 of the accommodation cavity 11, and insertion strips 131 are provided on the stepped portion 13 in a ring shape. A boss 33 in a ring shape is provided on the cover body 3, and a slot 331 is provided on the boss 33 in a ring shape. The boss 33 is fitted on the stepped portion 13, and the insertion strips 131 are inserted into the slots 331. The designs of the stepped portion 13, the boss 33, the insertion strips 131 and the slots 331 increase the contact area at the connection between the housing 1 and the cover body 3, enhance the stability of the connection, and further ensure the sealing performance of the accommodation cavity 11.

[0045] In the above embodiment, the housing 1 and the cover body 3 are connected by an ultrasonic welding process. The use of the ultrasonic welding process improves the reliability and durability of the connection, and ensures the firmness and sealing performance of the connection. In this embodiment, the stepped portion 13 and the boss 33, and the insertion strips 131 and the slots 331 are connected by the ultrasonic welding process.

[0046] In the above embodiment, pins 32 are provided on the cover body 3. The circuit board is disposed in the accommodation cavity 11 and is electrically connected between the connection wire 2 and the pins 32. The circuit board is respectively connected to the input end of the connection wire 2 and the output end of the pins 32, and can effectively form a current path for converting alternating current input into direct current output inside the power adapter, so that the power adapter has functional feasibility.

[0047] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A power adapter, characterized in that: include: A housing, wherein a housing cavity is provided in the housing, one end of the housing cavity is provided with an opening, a mounting groove is provided on the housing, a groove bottom wall of the mounting groove is provided with a clearance opening, and the clearance opening is communicated with the housing cavity; The connecting line is provided with a joint part, the joint part is arranged in the installation groove, and extends into the accommodating cavity through the clearance opening, and the outer peripheral wall of the joint part is in contact with the groove wall of the installation groove; A cover body, the cover body is connected to the shell and closes the opening, a limiting structure is provided between the cover body and the joint part, the limiting structure is provided in the accommodating cavity, the limiting structure includes a limiting block and a limiting groove respectively provided on the cover body and the joint part, the limiting block is inserted in the limiting groove to prevent the joint part from escaping from the accommodating cavity from the yielding opening.

2. The power adapter according to claim 1, characterized in that: Two of the limiting structures are arranged at intervals, and the two limiting structures are arranged on opposite sides of the joint part respectively.

3. The power adapter according to claim 2, characterized in that: The limit block comprises a connecting strip and a limit strip connected to each other; The connecting strip abuts against the inner wall of the accommodating cavity, and the limiting strip is inserted into the limiting groove.

4. The power adapter according to claim 3, characterized in that: The limiting groove is arranged on the joint part, the limiting block is arranged on the cover body, and the limiting strip is arranged on the side surface of the connecting strip facing the limiting groove.

5. The power adapter according to claim 4, characterized in that: The connecting strip comprises a first part and a second part; The first part is connected between the second part and the cover body, and the first part abuts against the inner wall of the container; A surface of the second portion facing the inner wall of the accommodating cavity is inclined, and a size of one end of the second portion connected to the first portion is larger than a size of the other end of the second portion.

6. The power adapter according to claim 1, characterized in that: The joint portion includes a body and a sealing member; The body extends into the accommodating cavity through the clearance opening, the sealing member is sleeved outside the body, and the outer peripheral wall of the sealing member is in contact with the groove wall of the installation groove.

7. The power adapter according to claim 6, characterized in that: The body comprises a first body and a second body connected to each other, the size of the first body is smaller than or equal to the clearance opening, and the size of the second body is larger than the size of the clearance opening; The first body extends into the accommodating cavity through the making way opening, and the second body is arranged in the installation groove and is sleeved with the sealing component.

8. The power adapter according to claim 1, characterized in that: A positioning structure is provided between the joint portion and the inner wall of the clearance opening; The positioning structure comprises a positioning groove and a positioning block which are respectively arranged on the inner wall of the joint part and the yielding opening, and the positioning block is clamped in the positioning groove.

9. The power adapter according to claim 1, characterized in that: An annular step portion is provided at the opening of the accommodating cavity, and an insert strip is provided on the step portion; The cover body is provided with an annular boss, and the boss is provided with a slot; The boss is overlapped with the step portion, and the inserting strip is inserted into the slot.

10. The power adapter according to claim 1, characterized in that: The shell and the cover are connected by ultrasonic welding process.

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