CN221282398U

CN221282398U - Vehicle-mounted inverter

Info

Publication number: CN221282398U
Application number: CN202322726335.9U
Authority: CN
Inventors: 陈龙扣; 桂登宇; 肖永根
Original assignee: Shenzhen Baseus Technology Co Ltd
Current assignee: Shenzhen Baseus Technology Co Ltd
Filing date: 2023-10-11
Publication date: 2024-07-05
Anticipated expiration: 2033-10-11

Abstract

The utility model provides a vehicle-mounted inverter, comprising: a housing forming an installation space; the shell is provided with a first surface for plugging and unplugging a data charging wire; the circuit board is arranged in the installation space and used for current conversion; the USB interface is fixed with the circuit board at one end of the plugging direction, and the other end of the USB interface is positioned on the first surface; wherein, all the USB interfaces are inserted in directions perpendicular to the circuit board. The circuit board can play a limiting role on one end of the USB interface in the plugging direction, and in the process of inserting the data charging wire into the USB interface, the plugging acting force can compress the USB interface and the circuit board, so that the vehicle-mounted inverter has the technical effect of being more stable.

Description

Vehicle-mounted inverter

Technical Field

The utility model belongs to the technical field of vehicle-mounted charging of mobile terminals, and particularly relates to a vehicle-mounted inverter.

Background

In a vehicle-mounted scene, when the mobile terminal is charged, in order to overcome the defect that the interface of the vehicle is not adaptive and the current cannot be converted, an inverter is often plugged in to stably charge the mobile terminal. The inverter comprises an inserting interface, a USB interface and a circuit board, wherein the USB interface is used for receiving the insertion of a data charging wire of the mobile terminal; the circuit board is used for outputting current to the USB interface. The shock resistance of the USB interface of the related vehicle-mounted inverter is poor, and the USB interface can loose and fall off after long-term use.

Disclosure of utility model

In view of the above, the present utility model provides a vehicle-mounted inverter to solve the technical problem of how to improve the structural stability of the vehicle-mounted inverter.

The technical scheme of the utility model is realized as follows:

The embodiment of the utility model provides a vehicle-mounted inverter, which comprises:

A housing forming an installation space;

the circuit board is arranged in the installation space and used for current conversion;

The USB interface is fixed with the circuit board at one end of the plugging direction, and the other end of the USB interface is positioned on the shell at the plugging direction; the plugging direction is the direction of plugging the data charging wire, the fixing surface is a plane where the circuit board is fixed with the at least one USB interface, and the plugging direction of the at least one USB interface is perpendicular to the fixing surface.

In some embodiments, the housing includes a bottom shell and a cover shell, the bottom shell and the cover shell enclosing to form the installation space; the vehicle-mounted inverter further includes:

And the gland is arranged in the installation space, and the circuit board is abutted between the gland and the bottom shell.

In some embodiments, the housing includes a first surface through which the free end of the USB interface passes; the circuit board is perpendicular to the bottom wall of the bottom shell and is arranged opposite to the first surface; the circuit board is provided with a first edge and a second edge which are oppositely arranged, and the first edge is contacted with the bottom wall;

The gland is provided with a first limiting mechanism matched with the second edge on one side of the gland facing the bottom wall, and the second edge is inserted into the first limiting mechanism.

In some embodiments, the circuit board has a third edge and a fourth edge disposed opposite each other, the third edge connecting the first edge and the second edge, the fourth edge connecting the first edge and the second edge;

And a second limiting mechanism is further arranged on one side, facing the bottom shell, of the gland, and the third edge and/or the fourth edge are/is inserted into the second limiting mechanism.

In some embodiments, the gland includes a body and an extension portion, the body and the bottom wall are disposed opposite to each other, the extension portion is disposed opposite to the body and protrudes toward the bottom wall, the first limiting mechanism is disposed on a side of the body, which is close to the bottom wall, and the second limiting mechanism is disposed on the extension portion.

In some embodiments, the gland further comprises:

The baffle part is arranged in a protruding mode relative to the body towards the direction of the bottom wall, and the baffle part is arranged on one side, away from the first surface, of the circuit board.

In some embodiments, all of the USB interfaces are integrally formed with the circuit board.

In some embodiments, the first surface is provided with a protruding positioning rib, an extending direction of the positioning rib is consistent with the plugging direction, and one side, close to the USB interface, of the circuit board abuts against the positioning rib.

In some embodiments, the bottom shell is provided with a plug shaft in a protruding mode, the gland is provided with plug holes, and the plug holes are in one-to-one corresponding plug arrangement with the plug shaft.

In some embodiments, the plug shaft is hollow, and the inner peripheral wall of the plug shaft is provided with threads.

The embodiment of the utility model provides a vehicle-mounted inverter, which comprises a shell, a circuit board and at least one USB interface, wherein the shell forms an installation space, the circuit board is arranged in the installation space, one end of the USB interface in the plugging direction is fixed with the circuit board, the other end of the USB interface in the plugging direction is positioned on the shell, and the plugging directions of all the USB interfaces are perpendicular to the fixed surface of the circuit board. The circuit board can play a limiting effect on one end of the USB interface in the plugging direction, and in the process that the data charging wire is inserted into the USB interface, the plugging acting force can compress the USB interface and the circuit board, so that the technical effect of 'more stable over plugging' is achieved, the connection stability of the USB interface and the circuit board is further improved, the risk of loosening of the USB interface relative to the circuit board is reduced, the shock resistance and the structural stability of the vehicle-mounted inverter are improved, and the service life of the vehicle-mounted inverter is prolonged.

Drawings

Fig. 1 is an axial side view of an entire vehicle-mounted inverter in an embodiment of the present application;

FIG. 2 is a partial cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is an assembled schematic view of a circuit board according to an embodiment of the application;

FIG. 4 is an exploded view of FIG. 3;

Fig. 5 is an exploded view of an on-board inverter according to an embodiment of the present application;

Fig. 6 is an isometric view of a press cover in an example embodiment of the application.

Reference numerals illustrate:

100. A housing; 110. a bottom case; 111. a first surface; 112. positioning ribs; 113. a limit rib; 114. a plug-in shaft; 115. a second surface; 120. a cover case; 200. a circuit board; 210. a first edge; 220. a second edge; 230. a third edge; 240. a fourth edge; 300. a USB interface; 400. a gland; 410. a body; 411. a plug hole; 420. an extension; 421. a first limiting mechanism; 422. a second limiting mechanism; 430. a barrier section; 440. a clamping groove; 500. an AC module; 600. and a PCB motherboard.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The individual features described in the specific embodiments can be combined in any suitable manner, without contradiction, for example by combination of different specific features, to form different embodiments and solutions. Various combinations of the specific features of the utility model are not described in detail in order to avoid unnecessary repetition.

In the following description, references to the term "first/second/are merely to distinguish between different objects and do not indicate that the objects have the same or a relationship therebetween. It should be understood that references to orientations of "above", "below", "outside" and "inside" are all orientations in normal use, and "left" and "right" directions refer to left and right directions illustrated in the specific corresponding schematic drawings, and may or may not be left and right directions in normal use. The XYZ coordinate system is an absolute coordinate in a normal use state. Reference to an orientation describes "positive" as the direction indicated by the arrow in the coordinate system and "negative" as the opposite direction indicated by the arrow in the coordinate system. The direction indicated by the arrow other than the coordinate system in the figure is the direction of the force.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. "plurality" means greater than or equal to two.

The application scenario type of the embodiment of the present utility model does not limit the structure of the vehicle-mounted inverter of the embodiment of the present utility model, but for convenience of explanation, the embodiment of the present utility model adopts a scenario in which the mobile terminal charges in the vehicle to explain the specific structure in the embodiment of the present utility model. The embodiment of the utility model provides a vehicle-mounted inverter which can be applied to a data charging wire for communicating a self-contained interface of a vehicle with a mobile terminal so as to charge the mobile terminal by using energy in the vehicle. The mobile terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, etc.

Fig. 1 is an axial side view of an on-vehicle inverter according to an embodiment of the present utility model, and fig. 2 is a partial sectional view of fig. 1 in a direction A-A, and a direction F1 is a plugging direction of a data charging line, that is, a plugging direction of a USB interface 300. Referring to fig. 1 and 2, the vehicle-mounted inverter according to the embodiment of the present utility model includes a housing 100, a circuit board 200, and a USB interface 300. The housing 100 may have an installation space, and the shape and structure of the housing 100 are not limited in the embodiment of the present utility model, for example, the housing 100 may be an integrally formed integral piece, or the housing 100 may be formed by combining a plurality of components. As shown in fig. 2, the circuit board 200 is disposed in the installation space of the housing 100, and the circuit board 200 is mainly used for converting DC12V DC power into AC220V AC power identical to mains supply, so as to realize charging of the mobile terminal after the USB interface 300 is connected to the data charging wire. It should be noted that, the plugging direction of the USB interface 300 indicates a direction (the direction F1 shown in fig. 1) in which the data charging line is plugged into and plugged out of the USB interface 300, and the plugging direction may be understood as an extending direction of the opening of the USB interface 300. The USB interfaces 300 are at least provided with one, and all the USB interfaces 300 are fixed with the circuit board 200 at one end in the plugging direction, and all the USB interfaces 300 are located at the housing 100 at the other end in the plugging direction.

As shown in fig. 2, the fixing surface of the circuit board 200 may be understood as a plane where the circuit board 200 and the USB interface 300 are fixed, and the plugging directions of all the USB interfaces 300 are perpendicular to the fixing surface of the circuit board 200, which may be understood as "vertical installation" of the USB interface 300 and the circuit board 200; the plugging direction of the USB interface 300 in the prior art is parallel to the fixing surface of the circuit board 200, which can be understood as that the USB interface 300 is "horizontally mounted" to the circuit board 200, and in the case of "horizontally mounted", the fixing surface of the circuit board 200 is parallel to the plugging direction of the USB interface 300, so that one end of the USB interface 300 in the plugging direction is not limited by the circuit board 200, and after the data charging wire is plugged in and pulled out for many times, the USB interface 300 is easy to be loosened relative to the circuit board 200. According to the embodiment of the utility model, a vertical installation mode is adopted, one end of the USB interface 300 in the plugging direction is fixed with the circuit board 200, the circuit board 200 can play a limiting role on one end of the USB interface 300 in the plugging direction, and in the process of inserting the data charging wire into the USB interface 300, the plugging acting force can compress the USB interface 300 and the circuit board 200, so that the technical effect of 'over-plugging and over-stabilizing' is achieved, the connection stability of the USB interface 300 and the circuit board 200 is further improved, the risk of loosening the USB interface 300 relative to the circuit board 200 is reduced, and then the vehicle-mounted inverter has higher shock resistance and structural stability, and the service life of the vehicle-mounted inverter is prolonged.

The embodiment of the application provides a vehicle-mounted inverter, which comprises a shell 100, a circuit board 200 and at least one USB interface 300, wherein the shell 100 is hollow to form an installation space, the circuit board 200 is arranged in the installation space, one end of the USB interface 300 in the plugging direction is fixed with the circuit board 200, the other end of the USB interface 300 in the plugging direction is positioned on the shell 100, and the plugging directions of all the USB interfaces 300 are perpendicular to the fixed surface of the circuit board 200. The circuit board 200 can play a limiting role on one end of the USB interface 300 in the plugging direction, in the process that the data charging wire is inserted into the USB interface 300, the plugging acting force can compress the USB interface 300 and the circuit board 200, so that the technical effect that the USB interface 300 and the circuit board 200 are more stable in plugging is achieved, the connection stability of the USB interface 300 and the circuit board 200 is further improved, the risk of loosening the USB interface 300 relative to the circuit board 200 is reduced, the shock resistance and the structural stability of the vehicle-mounted inverter are improved, and the service life of the vehicle-mounted inverter is prolonged.

It should be noted that, the outer surfaces of the housing 100, the circuit board 200 and the USB interface 300 may be made of hardware or plastic, and in the embodiment of the present utility model, the housing 100, the circuit board 200 and the USB interface 300 may be molded by injection molding, and the USB interface 300 includes metal terminals. Referring to the embodiment shown in fig. 3, three USB interfaces 300 may be provided, and the shape of the USB interface 300 is compatible with the shape of the common data line in the market. In the practical application process, the number, shape and type of the USB interfaces 300 are not limited according to the embodiment of the present utility model, and can be manufactured correspondingly according to the requirements. Such as Type-A, type-B, type-C, miniUSB and microUSB, the Type of USB interface 300 may be, but is not limited to. The circuit board 200 and the USB interface 300 in the embodiment of the present utility model may be integrally formed and assembled and used as an independent USB component, thereby simplifying the assembly process.

In some embodiments, referring to fig. 2, a gland 400 is disposed in an installation space of the housing 100, and it should be noted that the connection relationship between the gland 400 and the housing 100 is not specifically limited in this embodiment of the present utility model, for example, the gland 400 may be permanently fixed to the housing 100 by welding, bonding or integrally forming, and the gland 400 may be detachably connected to the housing 100 by a clamping connection, a connection (such as a screw, a bolt, etc.) interlocking, or the like, so long as the stability of the relative position between the gland 400 and the housing 100 can be achieved. As shown in fig. 3, the circuit board 200 abuts between the pressing cover 400 and the bottom wall of the housing 100. Fig. 3 is an assembly schematic diagram of the housing 100, the pressing cover 400 and the USB component, and for convenience of explanation, the structure of the bottom case 110 is simplified and illustrated in the embodiment of the present utility model. As shown in fig. 2, the housing 100 includes a bottom case 110 and a cover case 120. The bottom case 110 and the cover case 120 may be bonded and welded, or may be detachably connected by screws, bolts, or clips. In the embodiment of the present utility model, the bottom case 110 and the cover case 120 are detachably coupled using screws. In a state where the bottom case 110 is connected to the cover case 120, an installation space is formed between the bottom case 110 and the cover case 120. According to the embodiment of the utility model, the shell 100 is arranged in a split manner, so that the processing difficulty of the shell 100 is reduced, and the assembly difficulty of all parts in the installation space is reduced.

Fig. 4 is an exploded view of the components of fig. 3, as shown in fig. 3 and 4, the gland 400 is at least partially spaced from the bottom case 110, that is, at least a certain installation gap is formed between the gland 400 and the bottom case 110. The gap between the pressing cover 400 and the bottom case 110 is used to assemble the circuit board 200. It should be understood that, in the embodiment of the present utility model, the at least partial spacing between the gland 400 and the bottom shell 110 means that, in the X-axis direction, the extension plane of the gland 400 is at least partially parallel to the extension plane of the bottom wall of the bottom shell 110, and the gland 400 is spaced from the bottom shell 110 along the Z-axis, so that a certain space is formed between the gland 400 and the bottom shell 110, and the gland 400 is spaced from the bottom shell 110 in the Z-direction shown in fig. 3. The circuit board 200 abuts between the pressing cover 400 and the bottom case 110. The pressing cover 400 and the bottom case 110 respectively limit both sides of the circuit board 200 in the Z-axis direction to achieve fixation of the circuit board 200. In the embodiment of the utility model, the limitation of the degree of freedom of the Z axis of the circuit board 200 is realized by adopting the mode that the gland 400 and the bottom shell 110 are abutted against the circuit board 200, and the redundant parts are not needed to fix the circuit board 200 (namely the USB component), so that the die cost and the product unit price are saved, the step of independently fixing the circuit board 200 is reduced, the assembly cost is reduced, and the labor is saved.

In some embodiments, as shown in fig. 4, the housing 100 has a first surface 111, the first surface 111 is provided with a barrel slot, and the free end of the USB interface 300 is inserted into the barrel slot of the first surface 111 for the data charging cable to be plugged into the USB interface 300. The pressing cover 400 includes a body 410 disposed opposite to the bottom wall of the bottom case 110. The largest surface of the circuit board 200 is perpendicular to the bottom wall of the bottom case 110 and parallel to the first surface 111, the circuit board 200 has a first edge 210 and a second edge 220 which are oppositely disposed, the first edge 210 and the second edge 220 are spaced apart in the Z-axis direction shown in fig. 2, and the first edge 210 contacts with the bottom wall of the bottom case 110. The side of the gland 400 facing the bottom wall is provided with a first limiting mechanism 421, and the second edge 220 is inserted into the first limiting mechanism 421. As can be seen from fig. 4, after the second edge 220 is inserted into the first limiting mechanism 421, the degree of freedom of the circuit board 200 in the X-axis direction is limited by the wall surface of the first limiting mechanism 421, so that the risk of the circuit board 200 moving in the insertion direction (X-direction shown in fig. 4) of the USB interface 300 is reduced.

It should be noted that, the first limiting mechanism 421 may be a limiting groove or a limiting hole, and in the embodiment of the present utility model, the first limiting mechanism 421 is a limiting groove structure. In addition, the embodiment of the present utility model does not limit the formation manner of the first limiting mechanism 421. For example, the first limiting mechanism 421 may be a structure recessed relative to the surface of the body 410, or two spaced ribs are disposed on the surface of the body 410, the second edge 220 is inserted between the two ribs, and the two ribs respectively abut against two sides of the circuit board 200 in the X-axis direction to form a limiting effect. The first limiting mechanism 421 according to the embodiment of the present utility model is not limited to the function of the first limiting mechanism 421, and the forming manner of the first limiting mechanism 421 includes, but is not limited to, the above-mentioned several embodiments.

In some embodiments, as shown in fig. 4, the circuit board 200 has a third edge 230 and a fourth edge 240 disposed opposite to each other, the third edge 230 connecting the first edge 210 and the second edge 220, and the fourth edge 240 connecting the first edge 210 and the second edge 220 opposite to the third edge 230. The side of the gland 400 facing the bottom shell 110 is also provided with a second limiting mechanism 422, and the third edge 230 and/or the fourth edge 240 are inserted into the second limiting mechanism 422. It should be noted that, in the embodiment of the present utility model, the second limiting mechanism 422 is in a groove shape along the Z-axis direction, and only one second limiting mechanism 422 may be provided in the embodiment of the present utility model, where the second limiting mechanism 422 is used for limiting the third edge 230 or the fourth edge 240, or two second limiting mechanisms 422 are provided, and the two second limiting mechanisms 422 respectively limit the third edge 230 and the fourth edge 240. The embodiment of the utility model has a limiting effect on the degree of freedom of the circuit board 200 in the Y-axis direction shown in fig. 4 by arranging the second limiting mechanism 422, which is beneficial to improving the stability of the installation of the circuit board 200.

In some embodiments, as shown in fig. 3 and 4, gland 400 includes a body 410 and an extension 420. The body 410 is disposed opposite to the bottom wall of the bottom shell 110, the extension portion 420 is disposed protruding toward the bottom wall of the bottom shell 110 relative to the body 410, the first limiting mechanism 421 is disposed on a side of the body 410 near the bottom wall of the bottom shell 110, and the second limiting mechanism 422 is disposed on the extension portion 420. In the embodiment of the present application, two extending portions 420 are provided, and the two extending portions 420 are disposed at two ends of the body 410 at intervals in the Y-axis direction shown in fig. 4, and the extending portions 420 protrude toward a direction close to the bottom wall of the bottom case 110 relative to the body 410. The third edge 230 and the fourth edge 240 are inserted into the second limiting mechanism 422, so that the degree of freedom of the circuit board 200 in the Y direction is limited, and the mounting stability of the circuit board 200 is improved.

In some embodiments, as shown in fig. 3 and 4, the gland 400 further includes a blocking portion 430, where the blocking portion 430 is disposed on a side of the circuit board 200 away from the first surface 111, and the blocking portion 430 protrudes from a side of the body 410 near the bottom shell 110, and the blocking portion 430 is configured to abut against the circuit board 200 deformed in the plugging direction. As explained with reference to fig. 3, when the plugging force of the plugging data power cord is larger, the circuit board 200 is subject to the plugging force and is subject to bending deformation away from the USB interface 300, the stress surface of the circuit board 200 is the surface parallel to the first surface of the circuit board 200, and the blocking portion 430 opposite to the stress surface of the circuit board 200 is just disposed on the side of the circuit board 200 away from the USB interface 300, so that the deformed circuit board 200 can be abutted against the blocking portion 430, and the blocking force F2 opposite to the plugging direction F1 is applied to the circuit board 200 by the blocking portion 430, so that the bending deformation of the circuit board 200 after being subject to the larger plugging force is improved, and the service life of the vehicle-mounted inverter in the embodiment of the application is further prolonged by improving the installation stability of the circuit board 200.

In some embodiments, referring to fig. 4, all USB interfaces 300 are integrally formed with circuit board 200. In combination with the above known USB interface 300, a metal terminal is required to be added, and therefore, it should be explained that the USB interface 300 is only an injection-molded cover. The USB interface 300 and the circuit board 200 may be formed separately, and then the USB interface 300 is fixed to the circuit board 200 by using a plurality of methods such as screw fixing and glue bonding. Compared with the above embodiment, the integrated forming mode of the USB interface 300 and the circuit board 200 has higher stability, firmness and shock resistance, so that the use experience is further optimized, and the service life is prolonged.

In the embodiment of the present application, the implementation principle of the vehicle-mounted inverter limit circuit board 200 is described with reference to fig. 2 to 4: in the Z-axis direction, the body 410 of the gland 400 abuts against the first edge 210, the bottom wall of the bottom shell 110 abuts against the second edge 220, and the circuit board 200 is limited between the gland 400 and the bottom shell 110, so that the movement of the circuit board 200 in the Z-axis direction is limited. In the Y-axis direction, the third edge 230 and the fourth edge 240 are inserted into the second limiting mechanism 422, and the third edge 230 and the fourth edge 240 are blocked on the side wall of the second limiting mechanism 422 in the Y-axis direction, so that the degree of freedom of the circuit board 200 in the Y-axis direction is limited. In the X-axis direction, the circuit board 200 is inserted between two groove walls of the first limiting mechanism 421 and between two groove walls of the second limiting mechanism 422 parallel to the first surface 111, and the degree of freedom of the circuit board 200 in the X-axis direction is limited. Meanwhile, in the plugging direction F1, when the center of the circuit board 200 receives a large plugging force, the circuit board 200 is bent and deformed to be in a shape of a 'v', the blocking portion 430 abuts against the deformed circuit board 200, so that a blocking force F2 is applied to the circuit board 200, the blocking direction F2 is opposite to the plugging direction F1, and the action deformation of the large plugging force on the circuit board 200 is counteracted.

In some embodiments, as shown in fig. 4, the bottom wall of the bottom case 110 is provided with a protruding positioning rib 112, and the extending direction of the positioning rib 112 is consistent with the plugging direction, that is, the extending direction along the first surface 111 of the bottom case 110 in fig. 2 is toward the direction approaching the circuit board 200, and the side of the circuit board 200 approaching the USB interface 300 abuts against the positioning rib 112. Referring to fig. 2, when the circuit board 200 is installed, the first surface 111 of the housing 100 can be used as an installation reference of the circuit board 200, and through slots of the first surface 111 for the data charging wires to pass through need to be in one-to-one correspondence with the USB interfaces 300, so as to facilitate the insertion and extraction of the data charging wires of the mobile terminal, the area of each through slot is slightly larger than the area of the USB interface 300, so as to leave a margin for the data charging wires to pass through quickly. Therefore, the first surface 111 is used as a mounting reference of the circuit board 200, so that the problem that the USB interface 300 slides along the X-axis after penetrating through the through slot easily occurs, and the circuit board 200 cannot be accurately positioned and mounted to affect the assembly of subsequent components. With continued reference to fig. 4, in the embodiment of the present application, the first surface 111 is disposed on the bottom shell 110, the bottom wall of the bottom shell 110 is provided with the positioning rib 112 extending along the same direction as the plugging direction of the first surface 111, and by abutting the circuit board 200 against the positioning rib 112, the initial positioning of the circuit board 200 is achieved, and compared with the case where the first surface 111 is used as the mounting reference of the circuit board 200, the mounting accuracy of the structure is higher.

With continued reference to fig. 4, it is further explained that the bottom wall of the bottom case 110 is provided with protruding limiting ribs 113, the limiting ribs 113 and the positioning ribs 112 are disposed at opposite intervals, and a slot is formed between the limiting ribs 113 and the positioning ribs 112 in the X-axis direction, and the first edge 210 of the circuit board 200 is inserted into the slot. The positioning rib 112 abuts against one side of the circuit board 200 close to the USB interface 300, the limiting rib 113 abuts against one side of the circuit board 200 far away from the USB interface 300, and therefore the first edge 210 of the circuit board 200 is limited in a bidirectional mode, the circuit board 200 is inserted into the slot, and accurate assembly of the circuit board 200 and the bottom shell 110 can be achieved. After the circuit board 200 is installed on the bottom shell 110 in place, the circuit board 200 and the bottom shell 110 form a to-be-assembled group, so that the subsequent assembly of the gland 400 is facilitated. Meanwhile, the limit rib 113 is matched with the positioning rib 112, so that the degree of freedom of the lower half part of the circuit board 200 in the X direction is limited; the first limiting mechanism 421 is matched with the second limiting mechanism 422, so that the degree of freedom of the upper half part of the circuit board 200 in the X direction is limited, the circuit board 200 is blocked by multiple points in the X axis direction, the stability of the circuit board 200 is further improved, and the use stability of the vehicle-mounted inverter is further improved.

Fig. 5 is an exploded view of an on-vehicle inverter according to an embodiment of the present application, referring to fig. 5, in some embodiments, a bottom case 110 is provided with a protruding plug shaft 114, and the plug shaft 114 is provided with at least one and extends vertically in a direction approaching a cover case 120; the gland 400 is provided with a socket 411 corresponding to the socket shaft 114. The insertion hole 411 and the insertion shaft 114 are engaged with each other to fix the gland 400. It should be noted that, the fixing manner of the gland 400 is not limited to the above-mentioned one, for example, the gland 400 may be clamped to the to-be-assembled group formed by the circuit board 200 and the bottom shell 110 by directly using the first limiting mechanism 421 and the second limiting mechanism 422 of the gland 400, so as to realize the lower limit of the gland 400 in the Z axis; a convex surface is arranged on the cover shell 120 and abuts against the top surface of the gland 400, so that the upper limit of the gland 400 on the Z axis is realized. In comparison with the above embodiment, in the embodiment of the present application, the gland 400 is assembled with the plug shaft 114 as the mounting reference, and is directly fixed with the assembly to be assembled by using the structure of hole shaft matching, so that the calibration procedure is saved and the assembly efficiency is improved. It is further noted that in the embodiment of the present application, at least one of the plugging shafts 114 is provided, and extends vertically in a direction approaching the cap housing 120, and the pressing cover 400 abuts against the top end of the plugging shaft 114. The multiple groups of plug shafts 114 are arranged to support the gland 400 together, the gland 400 is supported by multiple points on the Z axis, the stability is high, and the problem that the gland 400 formed by injection molding is easy to deform after long-term use can be solved.

With continued reference to fig. 5, in the embodiment of the present application, the plugging shaft 114 is hollow, the inner circumferential wall of the plugging shaft 114 is provided with threads, and the gland 400 is mounted on the plugging shaft 114 of the bottom case 110 through a threaded connection such as a screw or a bolt. Fig. 6 is an axial side view of the gland 400, and, as shown in conjunction with fig. 6, may also be a method of directly punching a hole in a blank of the body 410 of the gland 400, and correspondingly arranging a bolt in the hole to fix the gland 400 and the bottom shell 110; the pressing cover 400 may be directly adhered to the bottom chassis 110. In the embodiment of the present application, the screw is inserted into the hollow insertion shaft 114, and the gland 400 and the bottom shell 110 are stably mounted by using the self-locking property of the screw thread of the inner peripheral wall of the insertion shaft 114. Compared with the mode of punching the gland 400, the structure of the embodiment of the application is simpler and the space utilization rate is higher.

The principle of assembly of the gland 400 with the circuit board 200 is explained in connection with fig. 3-5: the first edge 210 of the circuit board 200 is inserted into a slot formed by the limiting rib 113 and the positioning rib 112, so that preliminary positioning and installation of the circuit board 200 are realized, and at this time, the circuit board 200 and the bottom shell 110 form a to-be-assembled group. Then, the plugging hole 411 of the gland 400 is plugged with a plugging shaft 114 of the bottom shell 110 as a reference, so as to plug the circuit board 200 into the first limiting mechanism 421 and the second limiting mechanism 422. Thereafter, a connector (screw, bolt, etc.) is mounted by a screw of the inner peripheral wall of the socket shaft 114, and the circuit board 200 is fixed by the fixing gland 400.

The vehicle-mounted inverter in the embodiment of the application further comprises an AC module 500 abutting between the gland 400 and the bottom shell 110, wherein the AC module 500 is used for stabilizing current so as to eliminate current difference between the anode and the cathode of the vehicle-mounted inverter. Referring to fig. 5, the AC module 500 abuts against the cover 400 between the bottom case 110, and may be fixed by glue, punching, threading, or fixing the AC module 500 by processing components separately. In the embodiment of the present application, referring to fig. 6, the cover 400 is provided with a clamping groove 440 protruding from the bottom case 110, the clamping groove 440 is formed in cooperation with the shape of the AC module 500, and the AC module 500 is limited in the clamping groove 440, so that the limiting installation of the AC module 500 can be realized after the cover 400 with the clamping groove and the bottom case 110 are respectively injection molded without fixing additional processing components for the installation of the AC module 500, the structure is simple, and the consumption of the operation procedure and the injection mold is reduced.

Referring to fig. 5, for convenience of explanation, the end surface of the housing 100 opposite to the first surface 111 is made to be the second surface 115, a PCB main board 600 containing a main control circuit is disposed between the second surface 115 and the gland 400, heat dissipation holes are respectively formed in the first surface 111 and the second surface 115, and a micro heat dissipation fan is disposed between the second surface 115 and the PCB main board 600. The rotation of the blades in the miniature heat dissipation fan accelerates the gas flow in the installation space so as to transfer the hot air in the installation space to the outside through the heat dissipation holes. The micro heat dissipation fan is arranged close to the PCB 600, so that heat dissipation to the PCB 600 is facilitated, heat accumulation in the installation space is avoided, and the problem that the PCB 600 is overloaded due to the heat accumulation is solved. It should be noted that, the vehicle-mounted inverter has a conversion wire, so that the vehicle-mounted inverter is connected to the vehicle, the plugging port of the conversion wire is opened on the second surface 115, so that the plugging direction of the vehicle-mounted inverter to the vehicle is parallel to the plugging direction of the data charging wire, and the second surface 115 is planar, so that the conversion wire is stably plugged and unplugged.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model.

Claims

1. A vehicle-mounted inverter, characterized by comprising:

A housing forming an installation space;

The USB interface is fixed with the circuit board at one end of the plugging direction, and the other end of the USB interface is positioned on the shell at the plugging direction; the plugging direction is the direction of plugging the data charging wire, the fixing surface is a plane where the circuit board and the at least one USB interface are fixed, and the plugging direction of the at least one USB interface is perpendicular to the fixing surface.

2. The vehicle-mounted inverter according to claim 1, wherein the housing includes a bottom case and a cover case, the bottom case and the cover case enclosing to form the installation space; the vehicle-mounted inverter further includes:

3. The vehicle-mounted inverter of claim 2, wherein the housing includes a first surface through which the free end of the USB interface passes; the circuit board is perpendicular to the bottom wall of the bottom shell and is arranged opposite to the first surface; the circuit board is provided with a first edge and a second edge which are oppositely arranged, and the first edge is contacted with the bottom wall;

4. The vehicle-mounted inverter according to claim 3, wherein the circuit board has a third edge and a fourth edge disposed opposite to each other, the third edge connecting the first edge and the second edge, the fourth edge connecting the first edge and the second edge;

5. The vehicle-mounted inverter according to claim 4, wherein the gland comprises a body and an extension portion, the body is disposed opposite to the bottom wall, the extension portion is disposed protruding toward the bottom wall with respect to the body, the first limit mechanism is disposed on a side of the body, which is close to the bottom wall, and the second limit mechanism is disposed on the extension portion.

6. The vehicle-mounted inverter of claim 5, wherein the gland further comprises:

7. The vehicle-mounted inverter according to any one of claims 1 to 5, wherein all the USB interfaces are integrally formed with the circuit board.

8. The vehicle-mounted inverter according to any one of claims 3 to 5, wherein the first surface is provided with a protruding positioning rib, an extending direction of the positioning rib is consistent with the plugging direction, and a side of the circuit board, which is close to the USB interface, is abutted against the positioning rib.

9. The vehicle-mounted inverter according to any one of claims 2 to 5, wherein the bottom case is provided with a plug-in shaft protruding; the gland is provided with plug holes, and the plug holes are in one-to-one corresponding plug arrangement with the plug shafts.

10. The vehicle-mounted inverter according to claim 9, wherein the plug shaft is provided in a hollow manner, and an inner peripheral wall of the plug shaft is provided with threads.