Electronic device and personnel transportation device

Abstract

The utility model provides an electronic device which comprises a circuit board assembly, the circuit board assembly comprises a first board hole and a second board hole which penetrate through the circuit board assembly in the thickness direction and are spaced, and the circuit board assembly is provided with a first edge extending in the width direction; the first surface of the circuit board assembly is mounted on the mounting shell, the mounting shell comprises a first buckling part, a second buckling part and a mounting hole, the first buckling part is used for buckling the first edge, the first plate hole is aligned with the mounting hole, and the second buckling part is used for buckling the second edge. The second buckling part penetrates through the second plate hole to buckle the periphery of the second plate hole; and the board cover covers a second surface, opposite to the first surface, of the circuit board assembly, the board cover is provided with a first cover hole penetrating in the thickness direction, and the first cover hole is aligned with the first board hole and the mounting hole to allow a fastener to penetrate through so as to fasten the circuit board assembly, the board cover and the mounting shell.

Description

Technical Field

[0001] The present disclosure relates to the field of electricity, and particularly to an electronic device and a personnel transportation device including the electronic device. Background Art

[0002] For an electronic device that needs to install a circuit board, the circuit board is often installed by a plurality of screws, and this installation method requires a large amount of time and labor.

[0003] In addition, some existing circuit board installation methods often require the adaptation of the height of the circuit board and the installation housing. Therefore, for each circuit board, a specially adapted installation housing for the circuit board is required, which correspondingly requires the design of a dedicated mold to achieve production, and requires a large amount of time and labor.

[0004] Especially for some electronic devices that need to be thinner, such as an elevator call box used to summon, control an elevator and display the floor position where the elevator is located, it is now required to be thinner and thinner, which makes the assembly of the internal circuit board more difficult.

[0005] Therefore, an electronic device with a new assembly method is needed. Summary of the Utility Model

[0006] The purpose of the present disclosure is to at least solve the disadvantages existing in the prior art. The present disclosure provides an electronic device, including a circuit board assembly extending in the length direction and the width direction. The circuit board assembly includes a first board hole and a second board hole spaced apart in the thickness direction and penetrating through the circuit board assembly. The circuit board assembly has a first edge extending in the width direction and a second edge opposite to the first edge. The first board hole and the second board hole are closer to the second edge than to the first edge; an installation housing, the first surface of the circuit board assembly is mounted to the installation housing. The installation housing includes a first buckle portion, a second buckle portion and an installation hole. The first buckle portion is used to buckle the first edge. The first board hole is aligned with the installation hole. The second buckle portion passes through the second board hole to buckle the periphery of the second board hole; a board cover covering the second surface of the circuit board assembly opposite to the first surface. The board cover has a first cover hole penetrating in the thickness direction. The first cover hole is aligned with the first board hole and the installation hole to allow a fastener to pass through to fasten the circuit board assembly, the board cover and the installation housing.

[0007] For example, according to some embodiments of the present disclosure, the installation housing is provided with two spaced-apart first buckle portions arranged in the width direction, and the two first buckle portions are respectively spaced apart from the two ends of the first edge in the width direction.

[0008] For example, according to some embodiments of the present disclosure, the first snap portion includes a first section extending in the thickness direction from the body of the mounting housing and a second section extending in the length direction from the first section, and the first edge is snapped by the first section, the second section, and the body of the mounting housing.

[0009] For example, according to some embodiments of the present disclosure, the plate cover has two receiving cavities respectively receiving the first snap portions, and the receiving cavities surround the first snap portions on both sides of the first snap portion in the width direction and on the side of the first snap portion away from the circuit board assembly in the length direction.

[0010] For example, according to some embodiments of the present disclosure, the circuit board assembly further has two third board holes adjacent to the first edge, the two first snap portions are located between the two third board holes, and the plate cover has a protruding portion extending in the thickness direction, and the protruding portion extends into the third board holes.

[0011] For example, according to some embodiments of the present disclosure, the second snap portion includes a semi-circular first column portion extending in the thickness direction from the body of the mounting housing and a first flange protruding from the first column portion transversely to the thickness direction, and the first flange snaps the second surface on the outer periphery of the second board hole.

[0012] For example, according to some embodiments of the present disclosure, the circuit board assembly includes a circuit board body and a protective housing, and the protective housing is an annular member extending along the four edges of the circuit board body and is fixedly connected to the circuit board body.

[0013] For example, according to some embodiments of the present disclosure, the mounting housing is provided with two of the first snap portions, and the two first snap portions surround two corners on the first edge of the circuit board assembly to hold the circuit board assembly in the width direction and the thickness direction.

[0014] For example, according to some embodiments of the present disclosure, the second snap portion includes two spaced and symmetric half portions, and each half portion includes a semi-circular arc-shaped second column portion extending in the thickness direction from the body of the mounting housing and a second flange protruding from the second column portion transversely to the thickness direction, and the second flange snaps the second surface on the outer periphery of the second board hole.

[0015] For example, according to some embodiments of the present disclosure, the protective housing is provided with two third snap portions, the two third snap portions are located between the two first snap portions, the plate cover includes two second cover holes corresponding to the third snap portions, and the third snap portions pass through the second cover holes to snap the peripheries of the second cover holes.

[0016] For example, according to some embodiments of the present disclosure, the periphery of the board cover includes an outer peripheral wall surrounding the circuit board assembly, and the mounting housing includes a receiving groove for receiving the outer peripheral wall.

[0017] For example, according to some embodiments of the present disclosure, a fourth fastening portion is provided on the outer peripheral wall of the board cover, and the fourth fastening portion is used for engaging with the circuit board assembly.

[0018] The present disclosure also provides a personnel transportation device including the electronic device according to any one of the embodiments of the present disclosure.

[0019] For example, according to some embodiments of the present disclosure, the electronic device is an elevator call box configured to summon, control an elevator, and display the floor position where the elevator is located. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A perspective schematic view of an electronic device according to an embodiment of the present disclosure, wherein the board cover is omitted;

[0021] Figure 2 Shows Figure 1 A schematic view of the cooperation between a part of the shown electronic device and the board cover;

[0022] Figure 3 Shows Figure 1 A perspective schematic view of the mounting housing of the shown electronic device;

[0023] Figure 4 Shows Figure 3 An enlarged view of the shown second mating fastening portion;

[0024] Figure 5 Shows Figure 1 A cross-sectional perspective schematic view of the cooperation between the fourth mating portion of the board cover of the shown electronic device and the housing;

[0025] Figure 6 A perspective schematic view of an electronic device according to another embodiment of the present disclosure, wherein the board cover is omitted;

[0026] Figure 7 Shows Figure 6 A perspective schematic view of the shown electronic device after installing the board cover;

[0027] Figure 8 Shows Figure 6 A perspective schematic view of the mounting housing of the shown electronic device;

[0028] Figure 9a Shows Figure 6 A plan view of the protective housing of the shown electronic device;

[0029] Figure 9b Shown Figure 6 A plan view of the first side of the circuit board assembly of the electronic device shown

[0030] Figure 10 Shown Figure 9a An enlarged view of the third buckle portion of the protective housing shown;

[0031] Figure 11 Shown Figure 6 A cross-sectional three-dimensional schematic diagram of the cooperation between the outer peripheral wall of the board cover of the electronic device shown and the housing;

[0032] Figure 12 A plan view of the outer surface of the electronic device according to an embodiment of the present disclosure is shown.

[0033] Reference numerals

[0034] 1 Circuit board assembly, 111 First board hole, 112 Second board hole, 113 Third board hole, 121 First edge, 122 Second edge, 14 Circuit board body, 15 Protective housing, 151 Third buckle portion, 2 Mounting housing, 211 First buckle portion, 212 Second buckle portion, 22 Mounting hole, 231 First section, 232 Second section, 241 First column portion, 242 Second column portion, 251 First flange, 252 Second flange, 26 Receiving groove,

[0035] 3 Board cover, 311 First cover hole, 312 Second cover hole, 32 Receiving cavity, 33 Protrusion, 34 Fourth buckle portion, 35 Outer peripheral wall

[0036] 4 Fastener

[0037] 5 Outer surface

[0038] L Length direction, W Width direction, T Thickness direction Detailed implementation manners

[0039] In order to make the objectives, solutions, and advantages of the technical solutions of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings of the specific embodiments of the present disclosure. Unless otherwise specified, the terms used herein have the ordinary meanings in the art. The same reference numerals in the drawings represent the same components.

[0040] In the description of the present disclosure, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" 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 mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

[0041] For the sake of convenience of description, in the present disclosure, the extending direction of the first edge is designated as the width direction W, the direction in which the first edge is spaced from the second edge is designated as the length direction L, and the penetrating direction of the first plate hole is designated as the thickness direction T. In particular, the width direction W, the length direction L, and the thickness direction T are perpendicular to each other.

[0042] Figure 1 and Figure 2 An electronic device according to an embodiment of the present disclosure is shown. As Figures 1-2 shown, the electronic device includes a circuit board assembly 1, a mounting housing 2, and a cover plate 3. The circuit board assembly 1 is mounted to the mounting housing 2. In particular, the first surface of the circuit board assembly 1 is in close contact with the mounting housing 2. The cover plate 3 covers the second surface of the circuit board assembly 1 opposite to the first surface to provide protection. In particular, the cover plate 3 also surrounds the periphery of the circuit board assembly 1.

[0043] As Figure 1 shown, the circuit board assembly 1 can be a plate-like member extending in the length direction L and the width direction W, and has a first edge 121 extending in the width direction W and a second edge 122 opposite to the first edge 121. In addition, the circuit board assembly 1 may further include first plate holes 111, second plate holes 112, and third plate holes 113 that penetrate the circuit board assembly 1 along the thickness direction T and are spaced apart from each other for assembly, as Figure 1 shown. In particular, these holes can be arranged adjacent to the four corners of the circuit board assembly 1 to provide a more secure assembly effect. For example, the first plate hole 111 and the second plate hole 112 are closer to the second edge 122 than to the first edge 121 and are adjacent to the two corners at both ends of the second edge 122. There are two third plate holes and they are respectively adjacent to the two corners at both ends of the first edge 121.

[0044] Figure 3 Shown Figure 1 and Figure 2 is a perspective view of the mounting housing 2 in the electronic device shown. The mounting housing 2 may have a first snap portion 211, a second snap portion 212, and a mounting hole 22 for corresponding to and cooperating with the first edge 121, the second plate hole 112, and the first plate hole 111 respectively. Specifically, in combination with Figure 1 and Figure 3It can be seen that the first buckle portion 211 is adjacent to the first edge 121, the second buckle portion 212 is aligned with the second board hole 112, and the mounting hole 22 is aligned with the first board hole 111.

[0045] As Figure 1 and Figure 3 shown, the number of the first buckle portions 211 can be two. In particular, the two first buckle portions 211 are spaced apart from each other in the width direction W, and the two first buckle portions 211 are spaced apart from the two ends of the first edge 121 in the width direction W and are located between the two ends of the first edge 121. The two first buckle portions 211 are used to engage with the first edge 121, as Figure 1 shown. The two spaced-apart first buckle portions can provide a more secure engagement. And since the two first buckle portions are not at the two ends of the first edge, the mounting housing can be adapted to circuit board assemblies of different widths, thereby reducing the need for mounting housings specifically designed for different circuit boards.

[0046] Specifically, Figure 3 the first buckle portion 211 shown can include a first section 231 extending from the main body of the mounting housing 2 in the thickness direction and a second section 232 extending from the first section 231 in the length direction L. Thus, the first edge is engaged by the first section 231, the second section 232, and the main body of the mounting housing 2. That is, for example, the second section 232 and the main body of the mounting housing 2 (the part on the main body that abuts against the first surface of the circuit board assembly 1) clamp the circuit board assembly 1 in the thickness direction, and the first section 231 abuts against or restricts the first edge 121 in the length direction. Thus, the need for screws is reduced, and quick snap-fixing of the first edge can be achieved.

[0047] As Figure 1 and Figure 4 shown, the second buckle portion 212 can include a semi-circular first column portion 241 extending from the main body of the mounting housing 2 in the thickness direction T and a first flange 251 protruding from the first column portion 241 transversely to the thickness direction T. Thus, the second buckle portion 212 can extend into the second board hole 112 so that the first flange 251 protrudes out of the second board hole 112, and then the flange 251 engages the second surface on the outer periphery of the second board hole 112. Since, for example, the size of the second board hole already existing on the circuit board is small, such as a diameter of 4 mm, it is difficult to make a two-piece buckle portion (for example, the second buckle portion of the embodiment shown in Figure 8 ). Thus, a single-piece semi-circular buckle portion is used to achieve the engagement, which meets the strength requirements and reduces the manufacturing difficulty at the same time.

[0048] In addition, as Figure 2 and Figure 3As shown, the mounting housing 2 is further provided with a mounting hole 22 aligned with the first board hole 111. The mounting hole 22 and the first board hole 111 allow a fastener 4 (e.g., a screw) to pass through. In particular, the mounting hole 22, the first board hole 111, and the first cover hole 311 on the board cover 3 described later are aligned to allow the fastener 4 to pass through, thereby fastening the circuit board assembly 1, the board cover 3, and the mounting housing 2. Thus, the circuit board assembly 1 is fixedly mounted to the mounting housing at four points spaced apart in both the length direction L and the width direction W.

[0049] As Figure 2 shown, the electronic device according to the present disclosure further includes a board cover 3 for covering the circuit board assembly 1 to provide a protection function. Therefore, it is also necessary to fix the board cover 3. As Figure 2 shown, the board cover 3 may have a first cover hole 311 penetrating in the thickness direction T, a receiving cavity 32 surrounding the above-mentioned first snap portion 211, and a protrusion 33 cooperating with the third board hole 113.

[0050] Specifically, the first cover hole 311 is arranged to be alignable with the mounting hole 22 and the first board hole 111 to allow a fastener to pass through, thereby fastening the circuit board assembly 1, the board cover 3, and the mounting housing 2. Thus, the circuit board assembly 1 and the board cover 3 can be fixed to the mounting housing 2 with only one screw, enabling rapid assembly and saving assembly time, and the remaining snap fits simultaneously ensure the fixing strength.

[0051] The board cover 3 may have two receiving cavities 32, respectively for receiving one first snap portion 211. The receiving cavity 32 can surround the first snap portion 211 on both sides of the first snap portion 211 along the width direction W and on the side of the first snap portion 211 along the length direction L away from the circuit board assembly 1. Thus, the cover plate 3 can be restricted in two orientations in the width direction W and in one orientation in the length direction L (the orientation in which the second edge 122 points to the first edge 121), which is beneficial to the fixing of the board cover 3.

[0052] Furthermore, the board cover 3 may also have two protrusions 33 extending along the thickness direction T. As Figure 2 shown, they respectively cooperate with the third board hole 113. The protrusion 33 can extend into the third board hole 113 to facilitate the positioning of the cover plate 3 relative to the circuit board assembly 2. In particular, the protrusion 33 may further include a flange protruding transversely to the thickness direction T, which further fastens the protrusion 33 to the periphery of the third hole 113, facilitating the fixing of the board cover 3 and the circuit board assembly 1.

[0053] As Figure 2As shown, the periphery of the board cover 3 may further include an outer peripheral wall 35 surrounding the periphery of the circuit board assembly 1 to provide further restriction to the circuit board assembly 1 in the length direction L and the width direction W. A fourth latching portion 34 may also be provided on the outer peripheral wall 35. The fourth latching portion 34 can be used to engage with the circuit board assembly 1. Specifically, the fourth latching portion 34 is a recess on the outer peripheral wall 35 that recesses inward in a direction transverse to the thickness direction T towards the inside of the outer peripheral wall 35. This recess can be latched with the edge of the circuit board assembly in the thickness direction, that is, abutted in the thickness direction T. Thus, the fixation of the board cover 3 in the thickness direction T is further increased.

[0054] The present disclosure also includes an electronic device of another embodiment, such as Figure 6 and Figure 7 As shown, similar to the above Figure 1 and Figure 2 Similarly, the electronic device may also include a circuit board assembly 1, a mounting housing 2, and a cover plate 3. The circuit board assembly 1 can be mounted to the mounting housing 2. In particular, the first surface of the circuit board assembly 1 is closely attached to the mounting housing 2. The cover plate 3 covers the second surface of the circuit board assembly 1 opposite to the first surface to provide protection. In particular, the cover plate 3 also surrounds the periphery of the circuit board assembly 1.

[0055] As Figure 6 shown, similar to the circuit board assembly 1 described in connection with Figure 1 and Figure 2 , the circuit board assembly 1 can also be a plate-like member extending in the length direction L and the width direction W, and may further have a first edge 121 extending in the width direction W and a second edge 122 opposite to the first edge 121. In addition, the circuit board assembly may also be provided with a first board hole 111 and a second board hole 112 that penetrate the circuit board assembly 1 in the thickness direction T and are spaced apart from each other, as Figure 9a shown. For example, the first board hole 111 and the second board hole 112 are closer to the second edge 122 than to the first edge 121 and are adjacent to two corners at both ends of the second edge 122.

[0056] However, the difference is that the circuit board assembly 1 includes a circuit board body 14 and a protective housing 15 for providing protection to the circuit board body 14. The protective housing 15 is an annular member extending along the four edges of the circuit board body 14, as Figure 9a shown. For example, the four edges of the protective housing 15 can be smaller than, aligned with, or larger than the four edges of the circuit board body 14. The protective housing 15 is fixedly connected to the circuit board body 14, for example, by snap connection, screw connection, welding and bonding, etc., to provide protection and reinforcement to the circuit board body 14. As Figure 9bAs shown, the circuit board body 14 is provided with a display screen for displaying information, for example. One side of the circuit board body provided with the display screen can be fixedly connected to the protective housing 15, so that the display screen is located in the annular opening surrounded by the protective housing 15, so as to be exposed to the external environment and be visible to the user. In addition, the protective housing 15 can also be provided with a third snap portion 151 for assembly.

[0057] Since the circuit board body 14 and the protective housing 15 jointly form a circuit board assembly in this embodiment, the first edge 121 for fixing of the circuit board assembly 1 can be located on the protective housing 15 (in the case where the side edge of the protective housing 15 protrudes outward from the circuit board body 14), as Figure 6 shown, or the first edge 121 can be jointly formed by the circuit board body 14 and the protective housing 15 (in the case where the side edge of the protective housing 15 is aligned with the circuit board body 14). The first board hole 111 and the second board hole 112 of the circuit board assembly 1 can be jointly formed by the aligned holes on the circuit board body 14 and the protective housing 15, that is, both the first board hole 111 and the second board hole 112 include two holes respectively located on the circuit board body 14 and the protective housing 15.

[0058] Figure 8 Shown Figure 6 And Figure 7 shown is a perspective view of the mounting housing 2 in the electronic device shown. The mounting housing 2 can have a first snap portion 211, a second snap portion 212, and a mounting hole 22 for corresponding to and cooperating with the first edge 121, the second board hole 112, and the first board hole 111 respectively. Specifically, in combination with Figure 1 And Figure 3 it can be known that the first snap portion 211 is located at both ends of the first edge 121, the second snap portion 212 is aligned with the second board hole 112, and the mounting hole 22 is aligned with the first board hole 111.

[0059] As Figure 6 And Figure 8 shown, the number of the first snap portions 211 can be two. In particular, the two first snap portions 211 surround two corners on the first edge 121 of the circuit board assembly 1 (for example, provided on the protective housing 15) to hold the circuit board assembly 1 in the width direction W and the thickness direction T, and the mounting housing 2 can abut against the first edge along the length direction L, as Figure 6 shown. The arrangement of the first snap portions at both ends of the first edge holds the circuit board assembly 1 not only in two orientations in the thickness direction T, but also in two orientations in the width direction W and a single orientation in the length direction L, thereby providing a more secure engagement.

[0060] As Figure 6 And Figure 8As shown, due to the reinforcement and protection of the protective housing 15, the sizes of the first plate hole 111 and / or the second plate hole 112 can be made larger. Thus, for example, the second latching portion 212 can be provided with two parts to increase the latching strength. Specifically, the second latching portion 212 can have two spaced and symmetrical half parts. Each half part includes a semi-circular arc-shaped second column portion 242 extending along the thickness direction T from the main body of the mounting housing 2 and a second flange 252 protruding from the second column portion 242 transversely to the thickness direction T. The two half parts together form a circular second latching portion 212 that conforms to the shape of the second plate hole 112 on the protective housing 15. Thus, the second latching portion 212 can extend into the second plate hole 112 such that the second flange 252 extends out of the second plate hole 112, and then the second flange 252 latches the second surface on the outer periphery of the second plate hole 112. Through the arrangement of two separate half parts, the second latching portion 212 can be more easily deformed, further enhancing the latching strength.

[0061] In addition, as Figure 6 shown in connection with Figure 7 , the mounting housing 2 is further provided with a mounting hole 22 aligned with the first plate hole 111. The mounting hole 22 and the first plate hole 111 allow a fastener 4 (e.g., a screw) to pass through. In particular, the mounting hole 22, the first plate hole 111, and the first cover hole 311 on the plate cover 3 described later are aligned to allow the fastener 4 to pass through to fasten the circuit board assembly 1, the plate cover 3, and the mounting housing 2. Thus, the circuit board assembly 1 is fixedly mounted to the mounting housing at four points spaced apart in both the length direction L and the width direction W.

[0062] As Figure 7 shown, the electronic device according to the present disclosure further includes a plate cover 3 for covering the circuit board assembly 1 to provide a protective function. Therefore, it is also necessary to fix the plate cover 3. As Figure 2 shown, the plate cover 3 can have a first cover hole 311 penetrating in the thickness direction T and a second cover hole 312 for cooperating with the third latching portion 151.

[0063] Specifically, the first cover hole 311 is arranged to be aligned with the mounting hole 22 and the first plate hole 111 to allow a fastener to pass through to fasten the circuit board assembly 1, the plate cover 3, and the mounting housing 2. Thus, the circuit board assembly 1 and the plate cover 3 can be fixed to the mounting housing 2 with only one screw, enabling rapid assembly, saving assembly time, and ensuring the fixing strength with the remaining snap-fit.

[0064] Figure 10An enlarged view showing the third buckle portion 151 of the protective housing 15 shown in FIG. 9 is presented. The two third buckle portions 151 can be located between the two first buckle portions 211. The third buckle portion 151 has a structure similar to that of the second buckle portion 212, that is, it has two spaced and symmetrical halves, and each half includes a semi-circular column portion extending in the thickness direction and a flange portion protruding laterally from the column portion in a direction perpendicular to the thickness direction, so as to pass through the second cover hole 312 to fasten the periphery of the second cover hole 312. Thereby, the fixation of the circuit board assembly 1 and the cover plate 3 is further strengthened.

[0065] As Figure 11 shown, the periphery of the board cover 3 may include an outer peripheral wall 35 surrounding the circuit board assembly 1. Correspondingly, the mounting housing 2 may include a receiving groove 26 for receiving the outer peripheral wall 35, so as to provide further limitation to the circuit board assembly 1 in the length direction L and the width direction W.

[0066] The electronic device according to the present disclosure is particularly an electronic device for an elevator. For example, it is an elevator call box configured to summon and control an elevator and to display the floor position where the elevator is located. Figures 1-2 And Figures 6-7 What is shown is the interior of the electronic device, such as for installation inside a wall, while the exterior of the electronic device can be, for example, a flat surface, mounted on the wall, such as protruding slightly parallel to the wall or coplanar with the wall to display the operating device of the elevator.

[0067] The present disclosure also proposes a personnel transportation device, which can be, for example, a car elevator, an escalator, a moving walkway, etc. This personnel transportation device particularly includes the electronic device according to the present disclosure.

[0068] It should be understood that the above description is intended to illustrate rather than limit. For example, the above-described embodiments (and / or aspects thereof) and the combinations of features and characteristics in the embodiments can be used in combination with each other. Additionally, many modifications can be made to adapt a particular situation or material to the teachings of the present disclosure without departing from the scope of the present disclosure. The functions or performances of the various elements or modules described herein are for illustrative purposes only and are in no way restrictive, but are merely exemplary embodiments. After reading the above description, many other embodiments and modifications within the spirit and scope of the claims will be apparent to those skilled in the art. Therefore, the scope of the present disclosure should be determined with reference to the appended claims and the full scope of the equivalents given by these claims.

[0069] In the appended claims, the terms "comprising" and "wherein" are used as the plain English equivalents of the respective terms "including" and "in which". Additionally, in the following claims, the terms "first", "second", "third", etc. are used merely as labels and are not intended to impose numerical requirements on their objects.

Claims

1. An electronic device, characterized in that, including a circuit board assembly extending in a length direction and a width direction, the circuit board assembly including spaced-apart first and second board holes penetrating the circuit board assembly in a thickness direction, the circuit board assembly having a first edge extending in the width direction and a second edge opposite the first edge, the first and second board holes being closer to the second edge than to the first edge a mounting housing to which a first surface of the circuit board assembly is mounted, the mounting housing including a first snap portion, a second snap portion, and a mounting hole, the first snap portion being configured to snap onto the first edge, the first board hole being aligned with the mounting hole, and the second snap portion passing through the second board hole to snap onto a periphery of the second board hole a board cover covering a second surface of the circuit board assembly opposite the first surface, the board cover having a first cover hole penetrating in the thickness direction, the first cover hole being aligned with the first board hole and the mounting hole to allow a fastener to pass therethrough to fasten the circuit board assembly, the board cover, and the mounting housing 2. The electronic device according to claim 1, wherein the mounting housing is provided with two spaced-apart first snap portions arranged in the width direction, the two first snap portions being spaced apart from two ends of the first edge in the width direction 3. The electronic device according to claim 2, wherein the first snap portion includes a first section extending in the thickness direction from a main body of the mounting housing and a second section extending in the length direction from the first section, and the first edge is snapped by the first section, the second section, and the main body of the mounting housing 4. The electronic device according to claim 2, wherein the board cover has two receiving cavities respectively receiving the first snap portions, the receiving cavities surrounding the first snap portions on two sides of the first snap portion in the width direction and on a side of the first snap portion in the length direction away from the circuit board assembly 5. The electronic device according to claim 4, wherein the circuit board assembly further has two third board holes adjacent to the first edge, the two first snap portions being located between the two third board holes, and the board cover has a protruding portion extending in the thickness direction, the protruding portion extending into the third board holes 6. The electronic device according to claim 2, wherein the second snap portion includes a semi-circular first post portion extending in the thickness direction from a main body of the mounting housing and a first flange protruding transversely to the thickness direction from the first post portion, the first flange snapping onto the second surface at an outer periphery of the second board hole 7. The electronic device according to claim 1, wherein the circuit board assembly includes a circuit board body and a protective housing, the protective housing being an annular member extending along four edges of the circuit board body and fixedly connected to the circuit board body 8. The electronic device according to claim 7, wherein The installation housing is provided with two of the first snap portions, and the two first snap portions surround two corners on the first edge of the circuit board assembly to hold the circuit board assembly in the width direction and the thickness direction.

9. The electronic device according to claim 7, wherein The second snap portion includes two spaced and symmetrical halves, and each half includes a semi-circular second post portion extending in the thickness direction from the main body of the installation housing and a second flange protruding transversely to the thickness direction from the second post portion, and the second flange engages the second surface at the outer periphery of the second plate hole.

10. The electronic device according to claim 7, wherein Two third snap portions are provided on the protective housing, the two third snap portions are located between the two first snap portions, the plate cover includes two second cover holes corresponding to the third snap portions, and the third snap portions pass through the second cover holes to engage the peripheries of the second cover holes.

11. The electronic device according to any one of claims 1-10, wherein The periphery of the plate cover includes an outer peripheral wall surrounding the circuit board assembly, and the installation housing includes a receiving groove for receiving the outer peripheral wall.

12. The electronic device according to claim 11, wherein A fourth snap portion is provided on the outer peripheral wall of the plate cover, and the fourth snap portion is used for engaging with the circuit board assembly.

13. A personnel transportation device, characterized in that It includes the electronic device according to any one of claims 1-12.

14. The personnel transportation device according to claim 13, wherein The electronic device is an elevator call box configured to summon, control an elevator and display the floor position where the elevator is located.

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