A power module

Abstract

The application relates to the technical field of power supplies, and discloses a power supply module which comprises a shell, the shell is provided with a containing hole, the containing hole comprises an insertion end, an inner wall of the containing hole is provided with a containing ring groove, a terminal is arranged in the containing hole, a limiting structure for preventing the terminal from separating from the containing ring groove is arranged in the containing ring groove, the limiting structure comprises a limiting ring and an elastic sheet, the limiting ring is fixedly connected with the elastic sheet, the limiting ring is arranged in the containing ring groove, the distance between the elastic sheet and the axis of the containing hole gradually decreases in the direction away from the insertion end, a limiting groove is formed in the outer circumferential surface of the terminal, the elastic sheet is inserted into the limiting groove and abuts against the inner wall of the limiting groove away from the insertion end; during the process of mounting the terminal into the shell, the terminal drives the elastic sheet to deform in the direction away from the axis of the containing ring groove; the terminal continues to be inserted into the containing hole, when the elastic sheet is aligned with the limiting groove, the elastic sheet abuts against the bottom wall of the limiting groove, the terminal is limited, and the probability of accidental separation of the terminal from the shell is reduced.

Description

Technical Field

[0001] This application relates to the technical field of power supplies, and in particular to a power supply module. Background Technology

[0002] A power module is a highly integrated power conversion unit that can perform efficient and reliable power conversion and regulation. It is widely used in fields such as information and communication technology, electronic products, industrial automation, medical equipment, and test and measurement equipment.

[0003] The power module housing includes a housing and a plug. The housing and the plug snap together. The plug has terminals that can be inserted into the housing. The housing and the plug are connected through the terminals.

[0004] The terminals have integrally formed snap-fit ​​tabs that insert into the housing and engage with it. Because the terminals are engaged with the housing via snap-fit ​​tabs, the power module may accidentally separate from the housing under vibration or external force. Utility Model Content

[0005] To address the issue of accidental separation between the terminals and the housing, this application provides a power module.

[0006] This application provides a power module that adopts the following technical solution: A power module includes a housing with a receiving hole. The receiving hole includes an insertion end. A receiving ring groove is formed on the inner wall of the receiving hole. A terminal passes through the receiving hole. A limiting structure for preventing the terminal from disengaging from the receiving ring groove is provided in the receiving ring groove. The limiting structure includes a limiting ring and a spring piece. The limiting ring and the spring piece are fixedly connected. The limiting ring is disposed in the receiving ring groove. The distance between the spring piece and the axis of the receiving hole gradually decreases in the direction away from the insertion end. A limiting groove is formed on the outer circumferential surface of the terminal. The spring piece is inserted into the limiting groove and abuts against the inner wall of the limiting groove away from the insertion end.

[0007] By adopting the above technical solution, during the process of installing the terminal into the housing, the terminal driving spring deforms in a direction away from the axis of the receiving ring groove; as the terminal continues to be inserted into the receiving hole, when the spring is aligned with the limiting groove, the spring resets and inserts into the limiting groove, so that the spring abuts against the bottom wall of the limiting groove, thereby limiting the terminal and reducing the probability of the terminal accidentally separating from the housing.

[0008] Optionally, a through hole is provided on the outer surface of the limiting ring, and the through hole penetrates the limiting ring along the axial direction of the receiving ring groove.

[0009] By adopting the above technical solution, the outer diameter of the limiting ring can be changed by pressing the limiting ring, so that the limiting ring can be installed into receiving ring grooves of different diameters.

[0010] Optionally, multiple spring pieces are provided, and the multiple spring pieces are distributed circumferentially along the circumferential surface of the limiting ring.

[0011] By adopting the above technical solution, the limiting effect on the terminals is improved, and the probability of the limiting ring accidentally detaching from the receiving cavity is further reduced.

[0012] Optionally, the housing includes a plug and a base, and a locking structure connecting the plug and the base is provided. The locking structure includes an elastic block provided on the plug, and the base has a receiving groove for inserting the plug. The inner wall of the receiving groove has a slot for inserting the elastic block.

[0013] By adopting the above technical solution, the elastic block deforms during the insertion of the plug into the receiving slot. When the elastic block is aligned with the slot, it resets and inserts into the slot, thus connecting the plug to the base.

[0014] Optionally, the elastic block is provided with a chamfer, which is located at the junction of the end face of the elastic block facing the bottom wall of the receiving groove and the side surface of the plug-in.

[0015] By adopting the above technical solution, the chamfer makes it easier for the elastic block to be inserted into the slot.

[0016] Optionally, a fixing tube is provided at one end of the terminal facing the bottom wall of the receiving groove, and a fixing hole is provided at one end of the fixing tube facing the terminal. A connecting tube is provided in the fixing hole, and the connecting tube includes a clamping part that arches in the direction of the connecting tube axis. A fixing ring block is provided on the inner wall of the fixing hole on the side of the connecting tube away from the terminal.

[0017] By adopting the above technical solution, the side of the fixing ring block facing the terminal abuts against the connecting tube, making it difficult for the connecting tube to come out of the fixing hole; during the process of inserting the male terminal of the power module into the connecting tube, the male terminal drive clamping part deforms and abuts against the male terminal, improving the stability of the connection between the connecting tube and the male terminal.

[0018] Optionally, the base has an operating block at one end along its length away from the central axis of the base, and the operating block has an operating hole at one end along the axis of the receiving groove.

[0019] By adopting the above technical solution, bolts are passed through the operating hole and installed on the object to connect the base to the object.

[0020] Optionally, a fixing block is fixedly connected to one end of the plug facing the bottom wall of the receiving groove, and a fixing groove is opened in the bottom wall of the receiving groove, and the fixing block is inserted into the fixing groove.

[0021] By adopting the above technical solution, during the process of inserting the plug into the bottom wall of the receiving groove, the fixing block is inserted into the fixing groove, which restricts the plug from moving along the width or length direction of the base.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. During the process of installing the terminal into the housing, the terminal drive spring deforms in a direction away from the axis of the receiving ring groove; as the terminal continues to be inserted into the receiving hole, when the spring is aligned with the limiting groove, the spring abuts against the bottom wall of the limiting groove to limit the terminal and reduce the probability of the terminal accidentally separating from the housing; 2. During the insertion of the plug into the receiving slot, the elastic block deforms. When the elastic block is aligned with the slot, it resets and inserts into the slot, improving the stability of the connection between the plug and the base and preventing accidental separation after the plug and the base are connected. During the insertion of the plug into the receiving slot, the fixing block is inserted into the fixing slot to limit the plug. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is an exploded view highlighting the plug-in structure; Figure 3 This is an exploded view highlighting the base structure; Figure 4 This is a partial schematic diagram highlighting the fixed tube structure; Figure 5 This is a partial schematic diagram highlighting the limiting structure; Reference numerals: 1. Terminal; 11. Limiting groove; 12. Wire; 13. Connector; 131. Wire hole; 2. Housing; 3. Insert; 31. Opening; 311. Receiving ring groove; 32. Receiving hole; 33. Receiving hole; 4. Base; 41. Receiving groove; 411. Slot; 42. Through hole; 43. Operating block; 44. Operating hole; 45. Fixing groove; 5. Fixing block; 6. Connecting post; 7. Locking structure; 71. Elastic block; 711. Chamfer; 8. Fixing tube; 81. Fixing ring block; 82. Connecting tube; 821. Connecting part; 822. Clamping part; 823. Insertion part; 9. Limiting structure; 91. Limiting ring; 92. Spring piece; 911. Through hole; 912. Mounting hole. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] This embodiment discloses a power supply module. (Refer to...) Figure 1 and Figure 2 A power module includes terminals 1 and a housing 2, the housing 2 including a plug 3 and a base 4.

[0027] Reference Figure 1 and Figure 3 The base 4 has a receiving groove 41 at one end, and a through hole 42 is formed in the bottom wall of the receiving groove 41. Operating blocks 43 are fixedly connected to both ends of the base 4 along its length, and the operating blocks 43 are integrally formed with the insert 3. Operating holes 44 are formed at one end of each operating block 43 along the axis of the receiving groove 41, and the operating holes 44 penetrate the operating block 43 at the end away from the base 4.

[0028] Reference Figure 2 and Figure 3 The plug 3 is inserted into the receiving groove 41. The plug 3 has an opening 31 on the side facing the bottom wall of the receiving groove 41, and the opening 31 communicates with the through hole 42. The side of the opening 31 away from the through hole 42 includes the insertion end. The inner wall of the opening 31 has a receiving annular groove 311, which penetrates the plug 3 in the direction of the through hole 42.

[0029] Reference Figure 2 and Figure 3 The end of the plug-in 3 facing the bottom wall of the receiving groove 41 has a fixed block 5 integrally formed. The end of the base 4 facing the plug-in 3 has a fixing groove 45 for the fixing block 5 to be inserted.

[0030] Reference Figure 2 and Figure 3 A connecting post 6 is fixedly connected to one inner wall of the base 4 along its length direction, and the length direction of the connecting post 6 is consistent with the axis direction of the base 4. The plug 3 has a receiving hole 32 on the side facing the through hole 42 for inserting the connecting post 6.

[0031] Reference Figure 2 and Figure 3 Two locking structures 7 are provided between the plug-in 3 and the base 4 to connect the two. When the plug-in 3 and the base 4 are locked by the locking structures 7, the through hole 42 and the opening 31 combine to form the receiving hole 33. The locking structures 7 are located on the end face of the plug-in 3 along the width direction, and the two locking structures 7 are symmetrically distributed about the central axis of the plug-in 3.

[0032] Reference Figure 2 and Figure 3 The locking structure 7 includes five elastic blocks 71, which are arranged in an array along the length of the plug-in 3. The elastic blocks 71 are fixedly connected to the end face of the plug-in 3 along the width direction. A chamfer 711 is provided at the connection between the end face of the elastic block 71 facing the bottom wall of the receiving groove 41 and the side of the elastic block 71 away from the plug-in 3.

[0033] Reference Figure 2 and Figure 3 The receiving groove 41 has five slots 411 on each of the two inner walls along the width direction of the base 4. The five slots 411 are arranged in an array along the length direction of the base 4, and the slots 411 are for the insertion of the elastic block 71.

[0034] Reference Figure 4 A limiting groove 11 in the shape of an annular groove is provided on the outer circumferential surface of terminal 1.

[0035] Reference Figure 3 and Figure 4 A fixing tube 8 is provided on the end face of terminal 1 facing the bottom wall of receiving groove 41, and terminal 1 is inserted into the fixing tube 8. A fixing ring block 81 is fixedly connected to the inner circumferential surface of fixing tube 8.

[0036] Reference Figure 4 A connecting tube 82 is inserted inside the fixing tube 8, and the connecting tube 82 is located between the fixing ring block 81 and the terminal 1. The connecting tube 82 is formed by bending a conductive metal sheet. The connecting tube 82 includes a connecting part 821, a clamping part 822, and a plugging part 823. The clamping part 822 is located between the connecting part 821 and the plugging part 823, connecting the two. The clamping part 822 is elastic and arches towards the center of the connecting tube 82.

[0037] Reference Figure 1 and Figure 4 Terminal 1 is connected to a wire 12 at the end away from the fixed tube 8. The wire 12 is spiral-shaped, and a connector 13 is inserted at the end of the wire 12 away from terminal 1. The connector 13 has multiple through holes 131 for inserting the power supply wire 12, and multiple through holes 131 are provided for inserting different wires 12.

[0038] Reference Figure 4 A limiting structure 9 is provided within the receiving annular groove 311. The limiting structure 9 is used to prevent the terminal 1 from dislodging from the receiving annular groove 311.

[0039] Reference Figure 4 and Figure 5 The limiting structure 9 includes a limiting ring 91 and a spring piece 92. A through hole 911 is provided on the outer surface of the limiting ring 91, and the through hole 911 extends in a direction close to the central axis of the limiting ring 91.

[0040] Reference Figure 3 and Figure 4The limiting ring 91 has four mounting holes 912 on its inner circumferential surface, which are distributed circumferentially along the circumference of the limiting ring 91. Each mounting hole 912 contains a spring piece 92, which is fixedly connected to the inner wall of the mounting hole 912 away from the through hole 42. The distance between the spring piece 92 and the axis of the opening 31 gradually decreases towards the through hole 42. The spring piece 92 is inserted into the limiting groove 11, and abuts against the inner wall of the limiting groove 11 near the fixing tube 8. In other embodiments, the number of spring pieces 92 is set to two, three, or other quantities.

[0041] The implementation principle of a power module according to an embodiment of this application is as follows: Terminal 1 is inserted into the receiving hole 33, and terminal 1 abuts against the spring piece 92 in the receiving ring groove 311, causing the spring piece 92 to deform. Terminal 1 continues to be inserted into the receiving hole 33. When the spring piece 92 is aligned with the limiting groove 11, the spring piece 92 resets and inserts into the limiting groove 11, realizing the connection between terminal 1 and base 4. When terminal 1 moves towards the insertion end, the spring piece 92 abuts against the inner wall of the limiting groove 11 away from the insertion part, making it difficult for terminal 1 to detach from the receiving hole 33.

[0042] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0043] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A power module, comprising a housing (2), characterized in that: The outer shell (2) has a receiving hole (33), the receiving hole (33) includes an insertion end, the inner wall of the receiving hole (33) has a receiving ring groove (311), a terminal (1) is inserted into the receiving hole (33), a limiting structure (9) for preventing the terminal (1) from disengaging from the receiving ring groove (311) is provided in the receiving ring groove (311), the limiting structure (9) includes a limiting ring (91) and a spring piece (92), the limiting ring (91) and the spring piece (92) are fixedly connected, the limiting ring (91) is disposed in the receiving ring groove (311), the distance between the spring piece (92) and the axis of the receiving hole (33) gradually decreases as it moves away from the insertion end, a limiting groove (11) is provided on the outer circumferential surface of the terminal (1), the spring piece (92) is inserted into the limiting groove (11) and abuts against the inner wall of the limiting groove (11) away from the insertion end.

2. A power module according to claim 1, characterized in that: The outer surface of the limiting ring (91) is provided with a through hole (911), and the through hole (911) passes through the limiting ring (91) along the axial direction of the receiving ring groove (311).

3. A power module according to claim 1, characterized in that: The spring piece (92) is provided in multiple ways, and the multiple spring pieces (92) are distributed circumferentially along the circumferential surface of the limiting ring (91).

4. The power module of claim 1, wherein: The outer shell (2) includes a plug (3) and a base (4). A locking structure (7) is provided between the plug (3) and the base (4) to connect the two. The locking structure (7) includes an elastic block (71) provided on the plug (3). A receiving groove (41) for inserting the plug (3) is provided on the base (4). A slot (411) is provided on the inner wall of the receiving groove (41) for inserting the elastic block (71).

5. A power module according to claim 4, characterized in that: The elastic block (71) has a chamfer (711) on it. The chamfer (711) is located at the junction of the end face of the elastic block (71) facing the bottom wall of the receiving groove (41) and the side of the elastic block (71) away from the plug (3).

6. A power module according to claim 1, characterized in that: A fixing tube (8) is provided at one end of the terminal (1) facing the bottom wall of the receiving groove (41). A fixing hole is provided at one end of the fixing tube (8) facing the terminal (1). A connecting tube (82) is provided in the fixing hole. The connecting tube (82) includes a clamping part (822) that arches in the direction of the axis of the connecting tube (82). A fixing ring block (81) is provided on the inner wall of the fixing hole on the side of the connecting tube (82) away from the terminal (1).

7. A power module according to claim 4, characterized in that: The base (4) has an operation block (43) at one end away from the central axis of the base (4) along the length direction of the base (4), and the operation block (43) has an operation hole (44) at one end along the axis of the receiving groove (41).

8. A power module according to claim 4, characterized in that: The plug (3) is fixedly connected to a fixing block (5) at one end facing the bottom wall of the receiving groove (41). The bottom wall of the receiving groove (41) is provided with a fixing groove (45), and the fixing block (5) is inserted into the fixing groove (45).

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