CN218998702U - Housing assembly and power module - Google Patents

Abstract

The utility model discloses a shell assembly and a power module, wherein the shell assembly comprises a first plate body and a second plate body, the first plate body is provided with a guide protrusion, and the first plate body is used for being connected with external equipment; the second plate body is provided with a guide notch; when the guide bulge is propped against the guide notch, the second plate body can be fixed on the first plate body under the fastening action of the threaded fastener, so that an accommodating space for accommodating the circuit board of the power supply module is formed between the first plate body and the second plate body. Through the mode, the embodiment of the utility model can reduce the alignment difficulty of the threaded fastener and the shell assembly, thereby improving the assembly efficiency of the power supply module.

Description

Housing assembly and power module

Technical Field

The present disclosure relates to electrical protection, and more particularly, to a housing assembly and a power module.

Background

With the continuous progress of display technology, display screens are also continuously developed towards the direction of light weight and thin weight. At present, a power board of a display screen is often of a built-in design, and the heat dissipation difficulty of the power board is high in the inner space of the lighter display screen, so that the problem that the service life of the power board is short is easily generated. In order to solve the problem, the power board is modified from a built-in design to a detachable design, specifically, a shell component is added outside the power board, and the shell component is screwed and fixed through a threaded fastener to form a detachable power module. However, in the assembly process, due to the lack of limiting components, the alignment difficulty between the threaded fastener and the shell assembly or the power board of the power supply is increased, and the assembly efficiency of the power supply module is reduced.

Disclosure of Invention

In view of the foregoing, it is an object of the present utility model to provide a housing assembly and a power module block, which aims to reduce the difficulty of aligning a threaded fastener with the housing assembly, thereby improving the assembly efficiency of the power module.

According to a first aspect of the present utility model, there is provided a housing assembly comprising a first plate provided with guide protrusions for connection with an external device, and a second plate; the second plate body is provided with a guide notch; when the guide bulge is propped against the guide notch, the second plate body can be fixed on the first plate body under the fastening action of the threaded fastener, so that an accommodating space for accommodating the circuit board of the power supply module is formed between the first plate body and the second plate body.

Optionally, the first plate body is provided with a first plate body and a side wall connected with the first plate body, and the guide protrusion is arranged on the side wall;

the second plate body is provided with a second plate body and a first bending part connected with the second plate body, and the guide notch is arranged at the first bending part;

the guide protrusion abuts against the guide notch, so that the side wall and the first bending portion are arranged oppositely.

Optionally, the number of the first bending parts and the number of the guide notches are all multiple, and the multiple first bending parts are arranged at intervals along the length direction of the second plate body, wherein any one of the first bending parts is provided with at least one guide notch;

along the length direction of the first plate body, the side wall is provided with a plurality of guide bulges with the same quantity as the guide gaps, and any guide bulge can prop against one guide gap corresponding to the position of the guide bulge.

Optionally, the first plate body is provided with a nut post;

the second plate body is further provided with a second bending part connected with the second plate body, and the second bending part is positioned at one end of the second plate body along the length direction of the second plate body and is provided with a through hole;

the threaded fastener passes through the through hole and is fixedly connected to the nut post in a threaded manner so as to fix the second plate body to the first plate body.

Optionally, the thickness of the second plate is smaller than the thickness of the first plate.

Optionally, the second plate body is provided with a plurality of grooves recessed into the accommodating space.

Optionally, a reinforcing plate is disposed at one end of the second plate along the length direction of the second plate.

According to a second aspect of the present utility model, there is provided a power module, including a circuit board and the above-mentioned housing assembly, where the circuit board is accommodated in the accommodating space, the circuit board is sandwiched between the first board body and the second board body by the threaded fastener, and the circuit board includes a plurality of power supply elements.

Optionally, one end of the circuit board in the length direction exceeds one end of the second board body and does not exceed one end of the first board body;

and a port for electrically connecting external equipment is arranged at the part of the circuit board beyond the second board body.

Optionally, the power module further includes an insulating member, the insulating member is accommodated in the accommodating space, and the insulating member insulates the circuit board from the housing assembly.

The embodiment of the utility model has the beneficial effects that: according to the power module provided by the embodiment of the utility model, the guide bulge of the first plate body is propped against the guide notch of the second plate body, so that the first plate body and the second plate body are limited, and the first plate body, the second plate body and the circuit board can be conveniently and fixedly connected in a threaded manner, so that the alignment difficulty of the threaded fastener and the shell assembly is continuously reduced, and the assembly efficiency of the power module is improved. In addition, the power module provided by the embodiment of the utility model utilizes the guide convex of the first plate body and the guide notch of the second plate body to limit the shell assembly, and simultaneously, the shell assembly is screwed and fixed through the threaded fastener, compared with a single mode of screwing and fixing the shell assembly through the threaded fastener. When the fixing effect of the shell component and the circuit board is maintained, the holes on the circuit board and the shell component and the arrangement of the nut posts are reduced, so that the manufacturing cost of the power supply module is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a power module according to an embodiment of the present utility model;

FIG. 2 is a side view of the power module shown in FIG. 1;

FIG. 3 is an exploded view of the power module shown in FIG. 1;

FIG. 4 is a schematic structural view of a first board in the power module shown in FIG. 1;

fig. 5 is a schematic structural diagram of a second board body in the power module shown in fig. 1.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present utility model, are within the scope of the present utility model.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.

In the description of the present utility model, it should be noted that, orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, horizontal", and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and these orientation words do not indicate or imply that the apparatus or elements being referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

In the description of the present utility model, it should be noted that, the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, so they should not be construed as limiting the scope of the present utility model.

Fig. 1 is a schematic structural diagram of a power module according to an embodiment of the present utility model; FIG. 2 is a side view of the power module shown in FIG. 1; FIG. 3 is an exploded view of the power module shown in FIG. 1; referring to fig. 1 to 3, the power module includes a circuit board 20 and a housing assembly 10 for connecting and fixing with an external device. The housing assembly 10 has a receiving space 10a, the circuit board 20 is received in the receiving space 10a, and the threaded fastener 30 is screwed to the housing assembly 10 to fix the circuit board 20 to the housing assembly 10. The housing assembly 10 disclosed in the embodiments of the present utility model is applicable to a power module, and it will be understood that the housing assembly 10 may be applied to other components besides a power module, and is not particularly limited herein.

Next, a description will be given of specific configurations of the case assembly 10 and the circuit board 20 as illustrated in the accompanying drawings, and technical features related to different embodiments of the present utility model described below may be combined with each other without conflict.

Referring to fig. 2 in conjunction with fig. 4 and 5 for the above-mentioned housing assembly 10, in an embodiment of the present utility model, the housing assembly 10 is generally elongated and includes a first plate 11 and a second plate 12.

As shown in fig. 4, the first board 11 has a first board body 111 for protecting the side of the circuit board 20 where the functional modules are not provided, and two side walls 112 for adhering to the second board 12. The two side walls 112 are respectively formed by bending and extending along the two ends of the width direction of the first plate body 111 towards the same direction, and the first plate body 111 and the two side walls 112 are jointly enclosed to form a general U-shaped integral structure. The periphery of the first plate body 111 may be provided with notches and be screwed and fixed with the display screen by means of other types of threaded fasteners 30, the first plate body 111 is further provided with a nut post 114 adapted to the threaded fasteners 30, and the nut post 114 is screwed and fixed with the threaded fasteners 30. A surface of one side wall 112 facing the other side wall 112 opposite thereto is provided with a guide projection 113, and the guide projection 113 is adapted to abut against a guide notch 12a of a second plate body 12 to be described later. The first plate 11 may be made of a sheet metal part, specifically, two ends of the sheet metal part in the width direction thereof are processed by a bending process to form the two side walls 112, and a part of the sheet metal part not processed by the bending process is the first plate body 111. Thereafter, the first plate body 111 is punched with a through hole for mounting the nut post 114 through a punching process, and the side wall 112 is formed with the aforementioned guide projection 113 through a punching process. The nut post 114 may be a clinch nut post 114, which may be installed and fixed to the through hole of the first plate body 111 by extrusion, and it is understood that the connection manner of the nut post 114 and the first plate body 11 is various, and is not limited to the connection and fixation of the nut post 114 and the first plate body 11 by extrusion, for example, the nut post 114 may be fixed to the first plate body 111 by welding connection.

As shown in fig. 5, the second board 12 has a second board body 121 for protecting a side of the circuit board 20 provided with each functional module, at least two first bending portions 122 attached to both side walls 112 of the first board 11, and at least one second bending portion 123 for screw-fastening with the first board 11. The at least two first bending parts 122 are formed by bending and extending along one end of the second plate body 121 in the width direction in the same direction, the at least one second bending part 123 is formed by bending and extending along one end of the second plate body 121 in the width direction in the same direction, and then bending and extending along the direction parallel to the second plate body 121, and the second plate body 121, the at least two first bending parts 122 and the at least one second bending part 123 are jointly enclosed to form an overall structure which is approximately in an inverted U shape. Any of the first bending portions 122 is provided with a guiding notch 12a matching the cross-sectional shape of the guiding protrusion 113, the guiding notch 12a abuts against the guiding protrusion 113 to limit the first board body 111 and the second board body 121, so that an accommodating space 10a for accommodating the circuit board 20 is formed between the second board body 121 and the first board body 111. Any second bending part 123 is provided with a through hole 12b along the part which is parallel to the direction bending and extending of the second plate body 121, under the supporting action of the guide bulge 113 and the guide notch 12a, the through hole 12b can be aligned with the nut post 114 on the second plate body 121, and the threaded fastener 30 can pass through the through hole 12b to be in threaded connection with the nut post 114 for fixation, so that the second plate body 12 and the first plate body 11 can be assembled conveniently. For example, the second plate 12 may be made of a sheet metal part, and the manufacturing process of the first bending portion 122 and the second bending portion 123 is substantially the same as the manufacturing process of the sidewall 112 of the first plate 11, please refer to the forming step of the first plate 11 in detail, and will not be repeated herein. The guiding notch 12a of the first bending portion 122 and the through hole 12b of the second bending portion 123 are also substantially the same as the above-mentioned processing procedure of the through hole of the first plate 11, and will not be described herein again.

For the above-described circuit board 20, as shown in fig. 3, in the embodiment of the present utility model, the circuit board 20 may be screwed and fixed to the nut post 114 of the second board body 12 by the screw fastener 30 penetrating the through hole of the first board body 11. The circuit board 20 includes a plurality of power supply power elements, the plurality of power supply power elements are uniformly distributed on the same surface of the circuit board 20, the surface of the circuit board 20 where the plurality of power supply power elements are located corresponds to the second board body 121, and the plurality of power supply power elements can also form different functional modules in the circuit board 20 according to different implementation functions. Specifically, the circuit board 20 may have a power input module, a power conversion module, a high voltage switch module, a high voltage control module, and a dc output module. The power supply input module is used for acquiring electric energy from the outside, the power supply conversion module can respectively convert the electric energy acquired by the power supply input module into high-voltage output and direct-current output, so that power is respectively supplied to the high-voltage load and the direct-current load, during the period, the high-voltage switch module can control whether the high-voltage load works, and the high-voltage control module can adjust the output mode of the high-voltage load.

Illustratively, the power input module may be an AC220V power input module; the power conversion module can be a PWM power conversion module; the high voltage control module may be a DIM control module. The AC220V power input module is provided with a power terminal which can be conducted with the mains supply by means of a power line, electric energy input from the mains supply is converted by the PWM power conversion module and then is output to a high-voltage load such as a PANNEL lamp tube in sequence through the high-voltage switch module and the DIM control module in a preset alternating-current high-voltage mode, and meanwhile, the electric energy is output to components such as a main control panel and the like which can only work by direct-current power supply through the direct-current output module in a preset direct-current mode. It should be noted here that the high-voltage switch module has two states of on-off. If the switching state is the off state, the output of the preset alternating current high voltage to the high voltage load is stopped, and if the switching state is the on state, the preset alternating current high voltage is output to the high voltage load. The DIM control module adjusts the output mode of the high voltage load with one of a square wave or an adjustable dc voltage that can control the duty cycle. For example, the direct current voltage amplitude of the DIM control module is adjustable within the range of 0-5V, and the duty cycle is adjustable within the range of 0-100%.

The following describes the assembly process of the power module:

first, the circuit board 20 is placed on the main body of the first board body 11 such that the second mounting hole of the circuit board 20 is opposite to the nut post 114 of the main body of the first board body 11;

then, the second board body 12 is placed on the circuit board 20, at this time, although the first bending portion 122 of the second board body 12 is attached to the side wall 112 of the first board body 11, the guiding notch 12a of the first bending portion 122 is not abutted against the guiding protrusion 113 of the side wall 112, which means that the through hole 12b of the second bending portion 123 is not aligned with the nut post 114 of the main body of the first board body 11, and the second board body 12 is pushed towards the opening extending direction of the guiding notch 12a, and the through hole 12b of the second bending portion 123 is gradually aligned with the nut post 114 of the main body of the first board body 11 until the guiding notch 12a abuts against the guiding protrusion 113 of the side wall 112, which means that the through hole 12b of the second bending portion 123 is completely aligned with the nut post 114 of the main body of the first board body 11;

finally, the threaded fastener 30 can be conveniently screwed and fixed with the nut post 114 on the main body of the first board 11 after sequentially passing through the through hole 12b on the second bending part 123 and the through hole on the circuit board 20.

In summary, in the power module provided by the embodiment of the utility model, the guide protrusion 113 of the first board 11 abuts against the guide notch 12a of the second board 12, so that the first board 11 and the second board 12 are limited, so that the through hole 12b of the second board 12 and the nut post 114 of the first board 12 can be aligned conveniently, the through hole 12b of the second board 12 and the nut post 114 of the first board 11 are aligned, and the circuit board 20 is adjusted with reference to either of them, so that the threaded fastener 30 can fix the first board 11, the second board 12 and the circuit board 20 conveniently.

In addition, in the power module provided by the embodiment of the utility model, the guiding protrusion 113 of the first plate 11 and the guiding notch 12a of the second plate 12 are utilized to limit the housing assembly 10, and meanwhile, the housing assembly 10 is screwed and fixed by the threaded fastener 30, compared with a single mode of screwing and fixing the housing assembly 10 by the threaded fastener 30. The provision of openings in the circuit board 20 and in the housing assembly 10 and the nut posts 114 is reduced while maintaining the securing effect of the housing assembly 10 and the circuit board 20, thereby reducing the manufacturing cost of the power module.

To facilitate connection of the power module to the outside, and in particular to facilitate power supply of the circuit board 20 of the power module to a component such as a power supply, a control board or a display screen, the projected area of the second board body 12 is optionally smaller than the projected area of the circuit board 20 and the projected area of the circuit board 20 is smaller than the projected area of the first board body 11, as viewed in the thickness direction of the power module. As shown in fig. 1, on the premise that the widths of the circuit board 20, the first board 11 and the second board 12 are substantially the same, the length of the second board 12 is smaller than the length of the circuit board 20, and the length of the circuit board 20 is smaller than the length of the first board 11. The advantage of this is that the part of the circuit board 20 that exceeds the second board body 12 can be provided with ports for connection with the aforementioned components, while this part is still protected by the first board body 11, which in turn improves the connection reliability of the power module.

As shown in fig. 1, the power module is in a long and narrow structure, the thickness of the second plate body 12 is smaller than that of the first plate body 11, the overall structural strength of the second plate body 12 is inevitably reduced, when the power module is fixed on the first plate body 11, the stress of the second plate body 12 is inconsistent, and the middle part of the second plate body 12 bulges or bends easily, so that the light and thin structure of the power module can be affected, and based on the light and thin structure, the second bending part 123 is close to the end part of the main body of the second plate body 12 relative to the first bending part 122, namely, the first bending part 122 is positioned in the middle part of the main body of the second plate body 12, so that the middle part of the main body of the second plate body 12 can be limited by the limiting bulge and the limiting notch, and the consistency of the thickness of the power module is facilitated.

Further, referring to fig. 2, the power module further includes an insulating member 40, the insulating member 40 is accommodated in the accommodating space 10a of the housing assembly 10, and the insulating member 40 can insulate the circuit board 20 from the housing assembly 10. Illustratively, the insulating member 40 may be a Mylar sheet that is defined in a shape similar to the overall contour of the receiving space 10a and together encases the circuit board 20 and the power components of the power supply on the circuit board 20 under the screw-fastening action of the screw fastener 30.

In the application of the power module to a light and thin device such as a display screen, a stricter requirement is put on the thickness of the power module from the viewpoint of light and thin, and a certain requirement is put on the structural strength of the power module from the viewpoint of protecting each power element on the circuit board 20. Based on this, the thickness of the second plate 12 is optionally smaller than that of the first plate 11, so that the overall thickness of the power module is reduced while still having a good structural strength to protect the circuit board 20.

Since the thickness of the second plate 12 is relatively thin, the structural strength thereof is not high, and in order to raise the structural strength of the second plate 12 on the premise of maintaining the overall thickness of the circuit module substantially unchanged, further, the second plate 12 is provided with a plurality of grooves 121a recessed toward the inside of the accommodating space 10a. Specifically, the main body of the second plate body 12 may be punched with a plurality of kidney-shaped grooves 121a through a punching process, so that a structural strength reinforcing region is formed in the main body of the second plate body 12, so that the structural strength of the second plate body 12 is improved. Of course, other means for improving the structural strength of the second plate 12 may be adopted, as shown in fig. 5, and a reinforcing plate 124 is disposed at one end of the main body of the second plate 12 along the length direction of the second plate 12. Specifically, the reinforcing plate 124 is formed by bending a part of the main body of the second plate body 12 by a bending process until the reinforcing plate abuts against the surface of the main body of the second plate body 12 facing the inside of the accommodating space 10a.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims (10)

1. A housing assembly, comprising:

the first plate body is provided with a guide protrusion and is used for being connected with external equipment; and

the second plate body is provided with a guide notch;

when the guide bulge is propped against the guide notch, the second plate body can be fixed on the first plate body under the fastening action of the threaded fastener, so that an accommodating space for accommodating the circuit board of the power supply module is formed between the first plate body and the second plate body.

2. The housing assembly of claim 1, wherein the first plate has a first plate body and a side wall connected to the first plate body, the guide projection being disposed on the side wall;

the second plate body is provided with a second plate body and a first bending part connected with the second plate body, and the guide notch is arranged at the first bending part;

the guide protrusion abuts against the guide notch, so that the side wall and the first bending portion are arranged oppositely.

3. The housing assembly according to claim 2, wherein the number of the first bending portions and the number of the guide notches are plural, and the plural first bending portions are disposed at intervals along the length direction of the second plate body, and wherein any one of the first bending portions is provided with at least one guide notch;

along the length direction of the first plate body, the side wall is provided with a plurality of guide bulges with the same quantity as the guide gaps, and any guide bulge can prop against one guide gap corresponding to the position of the guide bulge.

4. A housing assembly according to claim 3, wherein the first plate body is provided with a nut post;

the second plate body is further provided with a second bending part connected with the second plate body, and the second bending part is positioned at one end of the second plate body along the length direction of the second plate body and is provided with a through hole;

the threaded fastener passes through the through hole and is fixedly connected to the nut post in a threaded manner so as to fix the second plate body to the first plate body.

5. The housing assembly of any one of claims 1-4, wherein a thickness of the second plate is less than a thickness of the first plate.

6. The housing assembly of claim 5, wherein the second plate is provided with a plurality of grooves recessed into the receiving space.

7. The housing assembly of claim 5, wherein the second plate is provided with a stiffening plate at one end along the length of the second plate.

8. A power module comprising a circuit board and a housing assembly according to any one of claims 1-7, the circuit board being received in the receiving space, the circuit board being sandwiched between the first and second plates by the threaded fasteners, the circuit board comprising a plurality of power supply elements.

9. The power module of claim 8, wherein an end of the circuit board in a length direction thereof exceeds an end of the second board body and does not exceed an end of the first board body;

and a port for electrically connecting external equipment is arranged at the part of the circuit board beyond the second board body.

10. The power module of claim 8 further comprising an insulator received in the receiving space and insulating the circuit board from the housing assembly.

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