Power tube pressing structure and charger

Abstract

The utility model provides a power tube hold-down structure and charger relates to automobile part technical field, power tube hold-down structure includes the briquetting body and the presser foot that mutually forms the included angle, the presser foot is connected with one end of the briquetting body, the presser foot includes at least two sub-presser foot that are arranged at interval, the sub-presser foot is connected with the briquetting body, the sub-presser foot is connected with the briquetting body, and the sub-presser foot is connected with the briquetting body. An opening groove is formed in the position, between every two adjacent sub-presser feet, of the pressing block body. According to the power tube pressing structure, the opening groove is arranged between the two adjacent sub-pressing feet on the pressing block body, namely, gaps between the sub-pressing feet extend to the connecting surface of the power tube pressing structure and the upper shell, the stress of the sub-pressing feet does not influence each other when the sub-pressing feet are deformed, the clamping stability of the power tube is better, and the power tube can be more stably clamped. And the pressure distribution on the heat dissipation structure is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a power tube pressing structure and a charger. Background Art

[0002] With the development of new energy vehicles, the application of chargers has become more and more common. In order to improve the charging efficiency of chargers, the number of power tubes is often set to be relatively large. The power tubes will generate a lot of heat when in use, and usually require a heat dissipation structure to dissipate the heat.

[0003] When installing existing power tubes, the pressure feet of the elastic sheet are generally used to press the multiple power tubes and the heat dissipation structure respectively. However, the forces on the pressure feet of the elastic sheet are transmitted and influenced by each other during operation, resulting in poor clamping stability between the power tubes and the heat dissipation structure and poor heat dissipation effect. Utility Model Content

[0004] The utility model aims to solve the technical problem that the existing power tube pressing structure has poor clamping stability.

[0005] On the one hand, the utility model provides a power tube clamping structure, including a pressure block body and a pressure foot arranged at an angle to each other, the pressure foot is connected to one end of the pressure block body, the pressure foot includes at least two sub-pressure feet arranged at intervals, and an open groove is provided on the pressure block body between two adjacent sub-pressure feet.

[0006] The power tube clamping structure of the utility model can be used to clamp the power tube of the charger. The clamp body can be installed on the upper shell of the charger, and the power tube is installed on the circuit board in the lower shell. When the upper and lower shells are locked and matched, each sub-pressor foot abuts against the corresponding power tube and undergoes extrusion deformation. The pressure generated by the deformation of the sub-pressor foot causes the power tube and the circuit board to move in a direction away from the upper shell. The circuit board can be tightly attached to the heat dissipation structure at the bottom of the lower shell to achieve the clamping and heat dissipation of the power tube. At the same time, an open groove is provided between two adjacent sub-pressors on the clamp body, which is equivalent to extending the gap between each sub-pressor foot to the connection surface between the power tube clamping structure and the upper shell. When the sub-pressors are deformed, the forces on each sub-pressor foot do not affect each other, the clamping stability of the power tube is better, and the pressure distribution on the heat dissipation structure is more uniform, which is conducive to ensuring the heat dissipation effect.

[0007] Optionally, the included angle between the sub-presser foot and the pressing block body is an acute angle.

[0008] Optionally, the sub-pressor foot is bent away from one end thereof connected to the press block body toward a direction close to the press block body;

[0009] And / or, one end of the sub-presser foot close to the pressing block body is smoothly transitionally connected to the pressing block body.

[0010] Optionally, a first connecting hole is provided on the pressing block body.

[0011] Optionally, a limiting hole is provided on the pressing block body.

[0012] On the other hand, the utility model also provides a charger, including the above-mentioned power tube pressing structure. The advantages of the charger compared with the prior art are the same as those of the above-mentioned power tube pressing structure, and will not be repeated.

[0013] Optionally, the charger further includes an upper shell, a lower shell, a power tube, a circuit board and a heat dissipation structure, wherein the upper shell is arranged opposite to the lower shell and is used to be installed in conjunction with the lower shell, the circuit board is installed in the lower shell, the power tube is arranged on a side of the circuit board close to the upper shell, and the heat dissipation structure is provided on a side of the circuit board away from the power tube. The pressing block body of the power tube pressing structure is installed on the upper shell, and when the upper shell is matched with the lower shell, the pressing foot of the power tube pressing structure abuts against the corresponding power tube to make the circuit board fit tightly against the heat dissipation structure.

[0014] Optionally, a protrusion protruding toward one side of the circuit board is provided on the lower shell, and a cooling channel is provided inside the protrusion to form the heat dissipation structure.

[0015] Optionally, the charger further comprises a fastener, a second connection hole is provided on the upper shell, and the fastener is used to pass through the second connection hole and the first connection hole on the pressing block body.

[0016] Optionally, a limiting column is provided on the upper shell, and the limiting column is used to be installed in cooperation with a limiting hole on the pressing block body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a charger according to an embodiment of the utility model;

[0018] Figure 2 A cross-sectional view of a charger according to an embodiment of the present utility model;

[0019] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of the charger of the utility model embodiment after removing the upper shell;

[0021] Figure 5 It is a structural schematic diagram of the power tube pressing structure of an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1. Pressing block body; 11. Opening groove; 12. First connecting hole; 13. Limiting hole; 2. Pressing foot; 21. Sub-pressing foot; 3. Upper shell; 4. Lower shell; 5. Power tube; 6. Circuit board; 7. Heat dissipation structure; 8. Fasteners. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "matched" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, it should be noted that in the description of the present invention, it should be noted that the terminology nouns in the various embodiments, such as "upper", "lower", "front", "back" and other words indicating directions, are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the components and devices referred to must be operated in accordance with the specific directions and specified operations and methods and structures in the specification. Such directional nouns do not constitute a limitation on the present invention.

[0027] In this article, a YZ coordinate system is established, in which the positive direction of the Y axis represents the left, the negative direction of the Y axis represents the right, the positive direction of the Z axis represents the top, and the negative direction of the Z axis represents the bottom. It should also be noted that the aforementioned Y axis and Z axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0028] like Figure 5 As shown, a power tube clamping structure of an embodiment of the utility model includes a clamp body 1 and a presser foot 2 arranged at an angle to each other, the presser foot 2 is connected to one end of the clamp body 1, the presser foot 2 includes at least two sub-presser feet 21 arranged at intervals, and an open groove 11 is provided on the clamp body 1 between two adjacent sub-presser feet 21.

[0029] Specifically, at least the portion of the pressing block body 1 connected to the presser foot 2 is flat, and the pressing block body 1 and the presser foot 2 are arranged at an angle to each other, which means that the presser foot 2 and the plane where the flat portion connected thereto are located are at an angle; for example, the entire pressing block body 1 can be a horizontally arranged plate-like structure, the length of the pressing block body 1 and the number of sub-presser feet can be flexibly set, the presser foot 2 can be made of elastic material and can be deformed, and the presser foot 2 and the pressing block body 1 can be integrally formed. For example, the right end of the pressing block body 1 is connected to two sub-presser feet 21 arranged at intervals along the front-to-back direction, and the right end of the pressing block body 1 is provided with an opening groove 11 with an opening facing right between the two sub-presser feet.

[0030] It should be noted that each sub-pressing foot 21 of the power tube pressing structure can abut against the same power tube 5 or different power tubes 5, that is, the power tube pressing structure can be used to fix a single power tube 5 or multiple power tubes 5. Preferably, the power tube pressing structure fixes a single power tube. When multiple power tubes 5 are installed on the circuit board 6 of the charger, Figure 4 As shown, according to the number and arrangement of the power tubes 5 on the circuit board 6, a suitable number of power tube clamping structures can be selected and fixed respectively, and there is no need to design power tube clamping structures of different specifications according to the arrangement of the power tubes 5. The power tube clamping structure has stronger applicability. Each sub-pressor foot can be arranged at intervals along the extension direction of the power tube 5, and multiple sub-pressor feet 21 respectively apply force to the power tube 5, and the force distribution is more uniform.

[0031] In this embodiment, if Figure 2-3 As shown, the power tube clamping structure can be used to install and fix the power tube 5 of the charger. The pressing block body 1 can be installed on the upper shell 3 of the charger, and the power tube 5 is installed on the circuit board 6 in the lower shell 4. When the upper and lower shells are locked and matched, each sub-pressor foot 21 abuts against the corresponding power tube 5 and undergoes extrusion deformation. The pressure generated by the deformation of the sub-pressor foot 2 causes the power tube 5 and the circuit board 6 to move in a direction away from the upper shell 3. The circuit board 6 can be closely attached to the heat dissipation structure 7 at the bottom of the lower shell 4, thereby achieving the compression and heat dissipation of the power tube 5. At the same time, an open groove 11 is provided between two adjacent sub-pressor feet 21 on the pressing block body 1, which is equivalent to extending the gap between each sub-pressor foot 21 to the connection surface between the power tube clamping structure and the upper shell 3. When the sub-pressor feet 21 are deformed, the forces on each sub-pressor foot 21 do not affect each other, the clamping stability of the power tube 5 is better, and the pressure distribution on the heat dissipation structure 7 is more uniform, which is conducive to ensuring the heat dissipation effect.

[0032] like Figure 5 As shown, optionally, the included angle between the sub-presser foot 21 and the pressing block body 1 is an acute angle.

[0033] Specifically, the sub-presser foot 21 can be arranged at an acute angle relative to the pressing block body 1, which has better stability compared to the sub-presser foot 21 and the pressing block body 1 being arranged at an obtuse angle to form a cantilever structure.

[0034] like Figure 3 , 5 As shown, optionally, the sub-presser foot 21 is bent away from the end connected to the pressing block body 1 toward the direction close to the pressing block body 1; and / or, the end of the sub-presser foot 21 close to the pressing block body 1 is smoothly connected to the pressing block body 1.

[0035] In this embodiment, the upper end of the sub-presser foot 21 is connected to the right end of the pressure block body 1, and the sub-presser foot 21 extends toward the lower left. The lower end of the sub-presser foot 21 is provided with an arc-shaped curved portion that bends upward. When the upper and lower shells are locked together, the arc-shaped curved portion can be used to abut against the power tube 5. The contact surface between the sub-presser foot 21 and the power tube 5 is smoother, thereby protecting the power tube 5 from damage.

[0036] Here, the sub-pressor foot 21 is smoothly connected to the pressing block body 1 through an arc segment, so as to avoid the power tube pressing structure being broken and damaged due to excessive stress concentration when the sub-pressor foot 21 is deformed.

[0037] like Figure 5 As shown, optionally, a first connecting hole 12 is provided on the pressing block body 1 .

[0038] In this embodiment, one or more first connection holes 12 may be provided on the pressing block body 1 . The first connection holes 12 may be circular holes. The pressing block body 1 may be bolted or clamped to the upper shell 3 through the first connection holes 12 .

[0039] like Figure 5 As shown, optionally, a limiting hole 13 is provided on the pressing block body 1.

[0040] In this embodiment, a plurality of notches may be provided around the circumference of the pressure block body 1 to form limiting holes 13 respectively. The pressure block body 1 may be limitedly matched with the upper shell 3 through the limiting holes 13 to improve the assembly accuracy between the pressure block body 1 and the upper shell 3.

[0041] like Figure 1-4 As shown, another embodiment of the utility model provides a charger, including the above-mentioned power tube pressing structure. The advantages of the charger compared with the prior art are the same as those of the above-mentioned power tube pressing structure, and will not be repeated.

[0042] like Figure 1-4As shown, optionally, the charger also includes an upper shell 3, a lower shell 4, a power tube 5, a circuit board 6 and a heat dissipation structure 7. The upper shell 3 is arranged opposite to the lower shell 4 and the upper shell 3 is used to be installed in conjunction with the lower shell 4. The circuit board 6 is installed in the lower shell 4. The power tube 5 is arranged on a side of the circuit board 6 close to the upper shell 3. The side of the circuit board 6 away from the power tube 5 is provided with a heat dissipation structure 7. The pressing block body 1 of the power tube clamping structure is installed on the upper shell 3. When the upper shell 3 is matched with the lower shell 4, the pressing foot 2 of the power tube clamping structure abuts against the corresponding power tube 5 to make the circuit board 6 fit tightly against the heat dissipation structure 7.

[0043] Specifically, the upper shell 3 and the lower shell 4 are arranged opposite to each other in the vertical direction, the open end of the upper shell 3 and the open end of the lower shell 4 are arranged opposite to each other, and the end surface shapes match each other, the bottom wall of the upper shell 3 is connected to the pressing block body 1, the circuit board 6 is installed in the lower shell 4, the upper surface of the circuit board 6 can be welded with a flat power tube 5, and a heat dissipation structure 7 is provided below the circuit board 6. The upper shell 3 and the lower shell 4 can be fixed by snap connection or bolt connection.

[0044] In this embodiment, the power tube 5 and other electronic components are first welded to the circuit board 6, and the circuit board 6 is placed in the lower shell 4. Then, the power tube clamping structure is fixed to the upper shell 3, and the upper shell 3 is moved toward the lower shell 4 until the upper and lower shells are locked together. At this time, the pressure foot 2 of the power tube clamping structure abuts against the power tube 5, and the pressure foot 2 applies a downward squeezing force to the power tube 5 so that the power circuit board 6 can be tightly attached to the heat dissipation structure 7 below it, ensuring that the heat generated by the power tube 5 can be well dissipated.

[0045] In the prior art, some use elastic sheets or bolts to fix the power tube 5 and the heat sink, and then the circuit board 6 with some electronic components welded thereon is dropped from above the power tube 5, and the pins of the power tube 5 are inserted into the corresponding holes on the circuit board 6, and the power tube 5 is welded by selective wave soldering. The entire assembly process of the charger requires multiple weldings, and the overall assembly efficiency is low. However, by adopting the method of this embodiment, the circuit board 6, the power tube 5 and other electronic components can be welded together by wave soldering, and only one welding is required. After that, the upper and lower shells are locked, and the power tube 5 and the circuit board 6 are pressed toward the heat dissipation structure 7 by using the power tube locking structure, and the assembly efficiency is higher.

[0046] like Figure 2-3 As shown, optionally, a protrusion protruding toward one side of the circuit board 6 is provided on the lower shell 4, and a cooling channel is provided inside the protrusion to form a heat dissipation structure 7.

[0047] In this embodiment, the protrusion is integrally formed with the lower shell 4, and the protrusion is in a long strip shape and is arranged along the extension direction of the power tube 5. The cooling channel can be filled with water, and the water circulation is used to remove the heat generated by the power tube 5 when it is working.

[0048] like Figure 3 As shown, optionally, the charger further includes a fastener 8 , a second connection hole is provided on the upper shell 3 , and the fastener 8 is used to pass through the second connection hole and the first connection hole 12 on the pressing block body 1 .

[0049] In this embodiment, the second connection hole is arranged corresponding to the first connection hole 12 and may be a bolt hole. The fastener may be a bolt, and the bolt passes through the corresponding bolt holes in sequence to connect the power tube clamping structure to the upper shell 3 together.

[0050] Optionally, a limiting column is provided on the upper shell 3 , and the limiting column is used to be installed in cooperation with the limiting hole 13 on the pressing block body 1 .

[0051] In this embodiment, the limiting column extends vertically, and the pressing block body 1 utilizes the cooperation between the limiting column and the limiting hole 13 to improve the installation accuracy between the pressing block body 1 and the upper shell 3 .

[0052] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. A power tube pressing structure, characterized in that: The invention comprises a pressing block body (1) and a pressing foot (2) which are arranged at an angle to each other, wherein the pressing foot (2) is connected to one end of the pressing block body (1), the pressing foot (2) comprises at least two sub-pressing feet (21) which are arranged at intervals, and an opening groove (11) is provided on the pressing block body (1) between two adjacent sub-pressing feet (21).

2. The power tube pressing structure according to claim 1, characterized in that: The included angle between the sub-pressor foot (21) and the pressing block body (1) is an acute angle.

3. The power tube pressing structure according to claim 2, characterized in that: The sub-pressor foot (21) is bent in a direction away from an end thereof connected to the press block body (1) and toward a direction close to the press block body (1); And / or, one end of the sub-presser foot (21) close to the pressing block body (1) is smoothly transitionally connected to the pressing block body (1).

4. The power tube pressing structure according to claim 1, characterized in that: The pressing block body (1) is provided with a first connecting hole (12).

5. The power tube pressing structure according to claim 1, characterized in that: The pressing block body (1) is provided with a limiting hole (13).

6. A charger, characterized in that: It comprises the power tube pressing structure as described in any one of claims 1 to 5.

7. The charger according to claim 6, characterized in that: The invention also comprises an upper shell (3), a lower shell (4), a power tube (5), a circuit board (6) and a heat dissipation structure (7); the upper shell (3) and the lower shell (4) are arranged opposite to each other and the upper shell (3) is used for being installed in cooperation with the lower shell (4); the circuit board (6) is installed in the lower shell (4); the power tube (5) is arranged on a side of the circuit board (6) close to the upper shell (3); the side of the circuit board (6) away from the power tube (5) is provided with the heat dissipation structure (7); the pressing block body (1) of the power tube pressing structure is installed on the upper shell (3); when the upper shell (3) and the lower shell (4) are in cooperation, the pressing foot (2) of the power tube pressing structure abuts against the corresponding power tube (5) so that the circuit board (6) and the heat dissipation structure (7) are in close contact.

8. The charger according to claim 7, characterized in that: The lower shell (4) is provided with a protrusion protruding toward one side of the circuit board (6), and a cooling channel is provided inside the protrusion to form the heat dissipation structure (7).

9. The charger according to claim 7, characterized in that: It also comprises a fastener (8), a second connecting hole is provided on the upper shell (3), and the fastener (8) is used to pass through the second connecting hole and the first connecting hole (12) on the pressing block body (1).

10. The charger according to claim 7, characterized in that: The upper shell (3) is provided with a limiting column, and the limiting column is used to be installed in cooperation with the limiting hole (13) on the pressing block body (1).

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