WO2013044587A1

WO2013044587A1 - Shell for containing electronic units

Info

Publication number: WO2013044587A1
Application number: PCT/CN2012/001210
Authority: WO
Inventors: 张楠; 水江孝仁
Original assignee: 欧姆龙株式会社
Priority date: 2011-09-29
Filing date: 2012-08-30
Publication date: 2013-04-04
Also published as: CN103037646A; CN203504894U

Abstract

A shell (1) for containing electronic units (2) is provided. The shell (1) is a rectangle box with one open side. At least two electronic units (2) are detachably contained in the shell (1), and at least one positioning protuberance (23) is respectively set on each one of two opposite side walls(24) of per electronic unit (2). Positioning notches (16) corresponding to the at least one positioning protuberance (23) are set on two end walls (15) of the shell (1) in the length direction. At least one clamp (11) extending upwardly is set on the bottom of the shell (1). When the at least two electronic units (2) are assembled at the predetermined position of the shell (1), in the two electronic units (2) respectively adjacent to the two end walls (15) of the shell (1), the at least one positioning protuberance (23) on the side wall (24)that is adjacent to the corresponding end wall (15) and is one of the two side walls (24) of each electronic unit (2) is clamped into the positioning notch (16) of the corresponding end wall (15), and the rest positioning protuberances (23) of the at least two electronic units (2) are clamped to the corresponding clamps (11). By the configuration, multiple electronic units can be contained in the same shell by a simple structure and each electronic unit can be detached conveniently.

Description

A housing for accommodating an electronic unit

Technical field

The invention relates to a housing for housing an electronic unit. Background technique

In an electronic device, a plurality of smaller electronic units are often included, and the plurality of electronic units are generally detachably housed in the outer casing of the electronic unit to avoid collision of various electrical components in the electronic unit due to installation and transportation. Damaged by external forces. However, in the prior art, an outer casing can only accommodate a single electronic unit, and if a plurality of electronic units are required, an additional device is often required to connect the outer casings of the plurality of electronic units to each other. Further, in the prior art, even if there is an outer casing capable of accommodating a plurality of electronic units at the same time, the outer casing merely integrates a plurality of outer casings accommodating a single electronic unit, not only the outer casing is bulky, but also the maintenance replacement of the electronic unit accommodated therein. not convenient. Further, in the prior art, it is sometimes necessary to connect two or more electronic units of different functions to each other through a circuit board, so that the electronic device can simultaneously implement functions such as detection, display, and the like. However, in this case, it is often necessary to make a special outer casing for accommodating more than two electronic units for special needs, which greatly increases the manufacturing cost of the device. Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide an outer casing for accommodating an electronic unit which can overcome the above drawbacks by a simple structure.

According to an aspect of the present invention, an outer casing for accommodating an electronic unit is provided. The outer casing has a rectangular parallelepiped box shape with one side open, and the outer casing detachably houses at least two electronic units, wherein two opposite side walls of each electronic unit At least one positioning protrusion extending toward the outside of the electronic unit is disposed on the upper portion. The housings are provided with positioning recesses corresponding to the at least one positioning projection on both end walls in the longitudinal direction. The bottom of the outer casing is provided with at least one engaging portion that extends upward. When at least two electronic units are assembled at predetermined positions within the outer casing, of the two electronic units adjacent to the two end walls of the outer casing, one of the two side walls of each electronic unit is adjacent to the corresponding end wall At least one positioning projection on the side wall is engaged in a positioning recess on the corresponding end wall. The remaining positioning projections of the at least two electronic units are engaged with the corresponding engaging portions. With the housing accommodating the electronic unit having the above structure, a plurality of electronic units can be housed in the same housing by a simple structure, and the detachment of each electronic unit is convenient.

Preferably, in the housing for accommodating the electronic unit provided by the present invention, when at least two electronic units are assembled at predetermined positions in the housing, two adjacent ones of the adjacent two electronic units are adjacent to each other The corresponding positioning protrusions are engaged with the same engaging portion.

With such a structure, the volume of the entire casing can be further reduced, and the volume of the entire electronic device can be further reduced.

Further, in the housing for accommodating the electronic unit provided by the present invention, at least one positioning protrusion respectively disposed on opposite side walls of each electronic unit is two or more positioning protrusions. The at least one engaging portion provided at the bottom of the outer casing is two or more engaging portions, wherein the engaging portions between the two adjacent sidewalls of the adjacent two electronic units are in quantity and the two Two or more positioning protrusions on each side wall of the side wall are in one-to-one correspondence.

Further, in the housing for accommodating the electronic unit provided by the present invention, at least one positioning protrusion respectively disposed on opposite side walls of each electronic unit is two or more positioning protrusions. The at least one engaging portion provided at the bottom of the outer casing is two or more engaging portions, wherein the engaging portions between the two adjacent side walls of the adjacent two electronic units are adjacent to the two sides The engaging portion of one of the side walls corresponds in number to the two or more positioning projections on the one side wall.

Further, in the housing for accommodating the electronic unit provided by the present invention, at least one positioning protrusion respectively disposed on opposite side walls of each electronic unit is two or more positioning protrusions. The positioning recess provided on each end wall of the outer casing in the longitudinal direction is at least two positioning recesses, and the at least two positioning recesses and one or more positioning protrusions on one of the two side walls of the electronic unit A correspondence.

Further, in the housing for accommodating the electronic unit provided by the present invention, the engaging portion includes a protrusion extending upward from the bottom, and a groove or a through hole provided in the protrusion. When at least two of the electronic units are assembled in a predetermined position within the housing, the remaining positioning projections of the at least two electronic units are engaged in the corresponding slots or through holes.

Further, in the outer casing for accommodating the electronic unit provided by the present invention, the side wall of the outer casing is provided with an access opening, and the access opening is located at a position corresponding to the slot or the through hole.

With such a structure, the electronic unit housed in the casing can be easily detached by a simple operation. Furthermore, in the housing for accommodating the electronic unit provided by the present invention, the engaging portion is an engaging claw extending upward from the bottom. The remaining positioning convex of at least two electronic units when at least two electronic units are assembled at predetermined positions within the housing Both of them are engaged with the corresponding engaging claws.

Furthermore, in the housing for accommodating the electronic unit provided by the present invention, the bottom of the housing is provided with an access opening, and the access opening is located at a position corresponding to the engaging claw.

With such a structure, the electronic unit housed in the casing can be easily detached by a simple operation.

The objects, functions, and configurations of the present invention are set forth in the Detailed Description of the Drawings. DRAWINGS

1 is a schematic view showing an assembled state of an outer casing and an electronic unit accommodating an electronic unit according to a first embodiment of the present invention;

Figure 2 is a side cross-sectional view showing the assembled state of the outer casing and the electronic unit of the first embodiment of the present invention shown in Figure 1; Figure 3 is an enlarged schematic view of the enclosed area of the circle A in Figure 2;

Figure 4 is a schematic end view of the outer casing of the first embodiment of the present invention shown in Figure 1;

Figure 5 is a side elevational view of the outer casing of the first embodiment of the present invention shown in Figure 1;

Figure 6 is an enlarged schematic view of the area enclosed by the circle B in Figure 5;

Figure 7 is a partial cross-sectional view showing an assembled state of an outer casing and an electronic unit accommodating an electronic unit according to a second embodiment of the present invention;

Fig. 8 is an enlarged schematic view showing a region surrounded by a circle C in Fig. 7. detailed description

The housing accommodating the electronic unit described in the present invention can be used in various applications in which an electronic unit is used. Next, the structure of the casing for accommodating the electronic unit and the assembly thereof with the electronic unit according to the present invention will be described in detail with reference to the preferred embodiment and the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments according to the present invention will be described with reference to the accompanying drawings. According to a first embodiment of the present invention, an outer casing housing an electronic unit is provided. More specifically, FIG. 1 is a schematic view showing an assembled state of the outer casing 1 and the electronic unit 2 mounted therein according to the first embodiment of the present invention. 2 is a side cross-sectional view showing the assembled state of the outer casing 1 and the electronic unit 2 of the first embodiment of the present invention shown in FIG. 1. 3 is an enlarged schematic view of a circle A surrounding area in FIG. 4 is a schematic end view of the outer casing 1 of the first embodiment of the present invention shown in FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 5 is a side view of the outer casing 1 of the first embodiment of the present invention shown in FIG. 1. Figure 6 is an enlarged schematic view of the area enclosed by the circle B in Figure 5. . As shown in the following Figures 1-6, in accordance with one aspect of the present invention, a housing 1 housing an electronic unit is provided. The outer casing 1 is a rectangular box that is open on one side Shape. The outer casing 1 detachably houses at least two electronic units 2. At least one positioning protrusion 23 extending outwardly of the electronic unit 2 is disposed on each of the opposite side walls 24 of each of the electronic units 2. The outer end 1 of the outer casing 1 is provided with positioning recesses 16 respectively corresponding to the at least one positioning projection 23 on both end walls 15 in the longitudinal direction. The bottom of the outer casing 1 is provided with at least one engaging portion 11 extending upward. When at least two electronic units 2 are assembled in a predetermined position within the outer casing 1, two of the two electronic units 2 adjacent to the two end walls 15 of the outer casing 1 are in the two side walls 24 of each electronic unit 2 The positioning protrusions 23 on the adjacent side walls 24 of the corresponding end wall 15 are engaged in the positioning notches 16 on the corresponding end wall 15, and the remaining positioning protrusions 23 of the at least two electronic units 2 and the corresponding cards The joint 11 is engaged. Further, in the present invention, at least one positioning protrusion 23 respectively disposed on the opposite side walls 24 of each electronic unit 2 is two or more positioning protrusions 23. By having such a configuration, the electronic unit 2 can be firmly fixed in the outer casing 1 by two or more positioning projections 23.

More specifically, as shown in Figs. 1-5, in the first embodiment of the present invention, the casing 1 is detachably accommodated with two electronic units 2 which are arranged side by side in the casing 1. More specifically, in the present embodiment, the same side portions of the two electronic units 2 are connected to each other by one circuit board, and the other side portions of the two electronic units 2 have a completely uniform structure. More specifically, as shown in Fig. 1, in the present embodiment, the display unit 21 and the button 22 are disposed on the bottom surface of the two electronic units 2 connected together and exposed through the open end of the casing 1. More specifically, as shown in FIG. 2, in the first embodiment of the present invention, two opposite side walls 24 of each electronic unit 2 are respectively provided with two positioning protrusions 23, and the two positioning protrusions 23 are respectively provided. Both extend outwardly of the electronic unit 2. More specifically, in the present embodiment, each of the positioning projections 23 is formed in a form projecting outward from the outer surface of the side wall 24 of the electronic unit 2. More specifically, each of the positioning projections 23 is formed in the form of a cantilever claw projecting outward from the outer surface of the side wall 24 of the electronic unit 2 to facilitate attachment and detachment of the electronic unit 2 with respect to the outer casing 1. More specifically, in the present embodiment, the two positioning projections 23 provided on each of the side walls 24 are arranged side by side in a row in a direction parallel to the bottom surface of the electronic unit 2.

Further, as shown in Fig. 2, both end walls 15 of the outer casing 1 in the longitudinal direction are provided with positioning notches 16 respectively corresponding to the two positioning projections 23 on the adjacent side walls 24. More specifically, in the present invention, the positioning notches 16 provided on each end wall 15 of the outer casing 1 in the longitudinal direction are at least two positioning notches 16, the at least two positioning notches 16 and the electronic unit 2 At least two positioning protrusions 23 on one of the two side walls 24 correspond to each other. More specifically, in the present embodiment, as shown in FIG. 2, each of the end walls 15 of the outer casing 1 in the longitudinal direction is provided with two positioning notches 16, the two positioning notches 16 and the electronic unit 2 The two positioning protrusions 23 on one of the two side walls 24 correspond to each other.

In this manner, in the present embodiment, when the two electronic units 2 are mounted at predetermined positions in the casing 1, the side walls of the two side walls 24 of each of the electronic units 2 adjacent to the corresponding end walls 15 The two positioning projections 23 on the 24 are engaged in corresponding positioning recesses 16 on the corresponding end wall 15. Further, as shown in FIGS. 2-3, in the present invention, the bottom of the outer casing 1 (i.e., the closed bottom of the outer casing 1 opposite the open portion) is provided with an upward extension (i.e., extending toward the inside of the outer casing 1). At least one engaging portion 11. When at least two electronic units 2 are assembled in a predetermined position within the outer casing 1, the remaining positioning projections 23 of the at least two electronic units 2 are engaged with the corresponding engaging portions 11. In the present invention, the expression "remaining positioning projections 23" means: the remaining positioning projections of the at least two electronic units 2 except for the positioning projections 23 on the side walls 24 adjacent to the end wall 15 of the outer casing 1. From 23. More specifically, in the present embodiment, the bottom of the outer casing 1 is provided with two engaging portions 11 respectively on one of the side walls 24 of the two side walls 24 of the electronic unit 2. The two positioning projections 23 correspond so that when the two electronic units 2 are assembled at predetermined positions in the outer casing 1, the two side walls 24 of the two electronic units 2 adjacent to each other are on the side walls 24 The two positioning protrusions 23 are all engaged in the corresponding engaging portions 11.

Further, in the present invention, when at least two electronic units 2 are mounted at predetermined positions in the outer casing 1, corresponding ones of the two adjacent side walls 24 of the adjacent two electronic units 2 are positioned. 23 is engaged with the same engaging portion 11. More specifically, in the present embodiment, when the two electronic units 2 are assembled at predetermined positions in the outer casing 1, the corresponding positioning projections 23 of the two side walls 24 adjacent to each other and the same engaging portion 11 snaps. More specifically, as shown in FIGS. 2-4, in the present embodiment, when the two electronic units 2 are assembled in the outer casing 1, two positioning projections 23 provided on the two side walls 24 adjacent to each other are provided. - a corresponding one, and a pair of positioning projections 23 corresponding to each other are engaged with the same engaging portion 11.

With such a configuration, the two electronic units 2 can be engaged in the outer casing 1 by a simple structure, and the volume of the outer casing 1 capable of accommodating the plurality of electronic units 2 is greatly reduced, while the electronic unit 2 can be easily removed from the outer casing Dismantle in 1 .

More specifically, in the present invention, as shown in FIGS. 2-4, the engaging portion 11 may be configured in a form including a projection 12 extending upward from the bottom of the outer casing 1 (i.e., extending toward the inside of the outer casing 1). And a groove or a through hole 13 provided in the protrusion 12. With such a configuration, when at least two electronic units 2 are assembled at predetermined positions in the outer casing 1, the remaining positioning projections 23 of the at least two electronic units 2 are engaged in the corresponding slots or through holes 13, thereby causing the electronic unit The side wall 24, which is not adjacent to the end wall 15 of the outer casing 1, is fixed at a predetermined position in the outer casing 1 by the engagement between the positioning projection 23 formed on the side wall 24 and the corresponding groove or through hole 13. .

More specifically, as shown in Figs. 2-4, in the present embodiment, the projection 12 extends from the bottom of the outer casing 1 toward the inside of the outer casing 1, and the intermediate portion of the projection 12 is formed with a through hole 13. When the two electronic units 2 are assembled at predetermined positions in the outer casing 1, each of the positioning projections 23 on each of the two side walls 24 of the two electronic units 2 opposite to each other is engaged to the corresponding In the through hole 13 , the engagement of the positioning protrusion 23 with the corresponding engaging portion 11 is achieved.

It should be noted that, in this embodiment, when two electronic units 2 are assembled in the outer casing 1, two electronic units 2 A pair of corresponding positioning protrusions 23 on the opposite side walls 24 are simultaneously engaged into the same engaging portion 11, that is, the pair of corresponding positioning protrusions 23 are simultaneously engaged to the same engaging portion 11 In the through hole 13 . However, the present invention is not limited thereto, and it is easily conceivable by those skilled in the art that, depending on actual use and design requirements, grooves are formed on the projections 12 of the engaging portion 11, and the corresponding positioning projections 23 are engaged with each other. Engagement between the engaging portion 11 and the positioning projection 23 is achieved in the groove of the engaging portion 11.

Further, in the present invention, as shown in FIGS. 5-6 of the specification, the side wall of the casing 1 of the present invention is further provided with a service port 14 for the user to disassemble and install in the casing 1. Electronic unit 2. More specifically, as shown in Figs. 5-6, in the present embodiment, the access opening 14 is located on the side wall of the outer casing 1 at a position corresponding to the groove or through hole 13 of the engaging portion 11. By forming such a service port, when the user needs to disassemble the electronic unit 2 installed in the casing 1, only a common tool such as a screwdriver needs to be inserted into the service port 14, and the corresponding positioning protrusion 23 is pushed by the screwdriver. The positioning protrusions 23 and the slots or through holes 13 of the engaging portion 11 are disengaged from each other. In this way, the electronic unit 2 mounted in the casing 1 can be easily detached, simplifies the steps of replacement or maintenance of the electronic unit 2, and the time required for replacement or maintenance is greatly reduced.

It is to be noted that, in the present embodiment, the access opening 14 is provided on the side wall of the outer casing 1 and is located at a position corresponding to the groove or through hole 13 of the engaging portion 11. However, the present invention is not limited thereto, and those skilled in the art can easily think that the service port 14 can be disposed at any position of the peripheral wall of the outer casing 1 according to actual use and design requirements, as long as the position of the service port 14 can be set. It is convenient for the user to move the positioning protrusion 23 of the electronic unit 2.

Further, in the present embodiment, two electronic units 2 are housed in the casing 1. However, the present invention is not limited thereto, and it is easily conceivable to those skilled in the art that the number of electronic units 2 housed in the casing 1 can be arbitrarily selected, for example, three or more electronic units 2, depending on actual use and design requirements. When a plurality of electronic units 2 need to be housed in the casing 1, the plurality of electronic units 2 may be discharged side by side in a row or in various forms.

Further, in the present embodiment, two positioning protrusions 23 are respectively disposed on the opposite side walls 24 of each electronic unit 2. However, the present invention is not limited thereto, and it is easily conceivable by those skilled in the art to arbitrarily select the number of positioning projections 23 provided on one side wall 24 according to actual use and design requirements, for example, one or three or more positioning projections. From 23. Further, the arrangement of the two or more positioning projections 23 may be arranged side by side in a row, or in various other forms. It suffices that the electronic unit 2 can be securely mounted in the outer casing 1 through the positioning projections 23 on the side walls 24.

Further, in the present embodiment, the bottom portion of the outer casing 1 is provided with two engaging portions 11. However, the present invention is not limited thereto, and it is easily conceivable to those skilled in the art that the number and form of the engaging portions 11 are arbitrarily selected in accordance with actual use and design requirements. For example, in the first embodiment described above, a single engaging portion 11 may also be formed, in this case In this case, the engaging portion 11 extends to cover the entire width direction of the outer casing 1. With such a configuration, not only can the pair of positioning projections 23 corresponding to each other on the two side walls 24 adjacent to each other be engaged with the same engaging portion 11, and all the two pairs of positioning projections 23 can be made to be stuck. Cooperating in the same engaging portion 11. Of course, in the present invention, the engaging portion 11 provided at the bottom of the outer casing 1 may be three or more, as long as the two electronic units 2 are assembled in a predetermined position in the outer casing 1, the two electronic units 2 are mutually coupled. The two positioning protrusions 23 on each of the two side walls 24 of the adjacent side can be engaged with the corresponding engaging portions 11.

Further, in the above embodiment, when at least two electronic units 2 are assembled in a predetermined position in the outer casing 1, corresponding positioning protrusions of the two side walls 24 adjacent to each other in the adjacent two electronic units 2 The 23 is engaged with the same engaging portion 11. However, the present invention is not limited thereto, and it is easily conceivable by those skilled in the art that, depending on actual use and design requirements, the corresponding positioning projections 23 of the two side walls 24 adjacent to each other are selected to be engaged with different cards. In the joint 11 . More specifically, in the present invention, among the at least one engaging portion 11 provided at the bottom of the outer casing 1, the engaging portion 11 between the adjacent side walls 24 of the adjacent two electronic units 2 is further The engaging portion 11 adjacent to one of the two side walls 24 corresponds in number to at least two positioning projections 23 on the one side wall 24. That is, in the present invention, a pair of positioning protrusions 23 on the two side walls 24 adjacent to each other may also be respectively engaged in the respective corresponding engaging portions 11, as long as at least two electronic units 2 can be made. When the predetermined position in the outer casing 1 is assembled, the remaining positioning projections 23 of the at least two electronic units 2 can be engaged with the corresponding engaging portions 11.

Next, a second embodiment of the present invention will be described with reference to Figs. 7-8 of the specification. The second embodiment is different from the above-described first embodiment in that the specific configuration of the engaging portion 11 is different from that of the engaging portion 11 of the first embodiment described above in the second embodiment. As shown in Figs. 7-8, in the second embodiment, the engaging portion 11 is an engaging claw 16 that extends upward from the bottom of the outer casing 1. When the at least two electronic units 2 are assembled in a predetermined position in the casing 1, the remaining positioning projections 23 of the at least two electronic units 2 are engaged with the respective engaging claws 16 with each other. More specifically, as shown in FIGS. 7-8, in the second embodiment, the engaging claws 16 in the engaging portion 11 extend from the outer casing 1 toward the inside of the outer casing 1, and the free end of the engaging claw 16 faces The electronic unit 2 extends. With such a structure, the electronic unit 2 can be positioned at a predetermined position of the casing 1 by the engagement between the positioning projection 23 on the side wall 24 of the electronic unit 2 and the engaging claw 16. Further, in the present embodiment, the arrangement position and the number of the engagement claws 16 are similar to those of the above-described first embodiment, and a detailed description thereof will be omitted herein. More specifically, as shown in FIG. 8, in the present embodiment, each of the engaging portions of the engaging claws 16 and the outer casing 1 is formed with a cantilever structure. With such a configuration, the engaging claws 16 can be subjected to an external force. The cantilever structure is displaced relative to the outer casing 1 such that the engaging claws 16 are disengaged from engagement with the corresponding positioning projections 23.

Similarly, in the second embodiment, an access port 17 may be provided at the bottom of the outer casing 1, and the access port 17 is located A position corresponding to the engaging claw 16. When the user needs to disassemble the electronic unit 2 installed in the outer casing 1, the common engaging tool such as a screwdriver is inserted into the access opening 17, and the corresponding engaging claw 16 is pushed by the screwdriver, so that the engaging claw 16 is The respective positioning projections 23 are disengaged from each other. Similar to the first embodiment described above, according to the present embodiment, it is easily conceivable by those skilled in the art that the service port 17 can be disposed at any position of the peripheral wall of the outer casing 1 according to actual use and design requirements, as long as the inspection port is provided. The position of the 17 can be easily adjusted by the user to move the engaging claws 16. Further, according to the above embodiment, the access opening 17 can also be disposed on the engaging claws 16 so that the user can directly operate the engaging claws 16.

Further, in the present invention, the outer surface of the bottom of the outer casing 1 may be provided with a plurality of ribs extending toward the outside of the outer casing 1, which ribs can not only enhance the strength of the bottom of the outer casing 1, but also the end of the electronic unit 2. Limits may be used for terminals or wire washers that may be used.

The above is a preferred embodiment of the present invention and the accompanying drawings, and only the preferred embodiments and the accompanying drawings are not intended to limit the scope of the claims of the present invention. The scope of the invention is not limited by the scope of the invention but the scope of the applicant's rights.

Claims

Claim

An outer casing accommodating an electronic unit, the outer casing being in the shape of a rectangular parallelepiped box having an open side, the outer casing detachably receiving at least two electronic units, wherein two opposite side walls of each of the electronic units The upper portion is respectively provided with at least one positioning protrusion extending toward the outside of the electronic unit; and the feature is:

a positioning recess corresponding to the at least one positioning protrusion respectively is disposed on both end walls of the outer casing in the longitudinal direction; and

The bottom of the outer casing is provided with at least one engaging portion extending upward;

When the at least two electronic units are mounted at predetermined positions within the outer casing - of the two electronic units adjacent to the two end walls of the outer casing, the two sides of each electronic unit The at least one locating projection on the side wall of the wall adjacent the corresponding end wall engages in the locating recess on the corresponding end wall, and

The remaining positioning protrusions of the at least two electronic units are engaged with the corresponding engaging portions.

2. The housing of an electronic unit according to claim 1, wherein when the at least two electronic units are assembled at predetermined positions within the housing, adjacent ones of the two electronic units are adjacent to each other The corresponding positioning protrusions of the two side walls are engaged with the same engaging portion.

The outer casing of the electronic unit according to claim 2, wherein at least one positioning protrusion respectively disposed on two opposite side walls of each of the electronic units is two or more positioning protrusions; The at least one engaging portion provided at the bottom is two or more engaging portions, wherein the engaging portions between the two adjacent sidewalls of the adjacent two electronic units are in quantity and the two One or more positioning projections on each of the side walls are in one-to-one correspondence.

The outer casing of the electronic unit according to claim 1, wherein at least one positioning protrusion respectively disposed on two opposite side walls of each of the electronic units is two or more positioning protrusions; The at least one engaging portion provided at the bottom is two or more engaging portions, wherein the engaging portions between the two adjacent sidewalls of the adjacent two electronic units are adjacent to the two The engaging portion of one of the side walls corresponds in number to at least one positioning projection on the one side wall.

The outer casing of the electronic unit according to claim 1, wherein at least one positioning protrusion respectively disposed on two opposite side walls of each of the electronic units is two or more positioning protrusions; Every in the length direction The positioning notches provided on the end walls are at least two positioning notches, and the at least two positioning notches are in one-to-one correspondence with two or more positioning protrusions on one of the two side walls of the electronic unit.

The housing of the electronic unit according to any one of claims 1 to 5, wherein the engaging portion includes a protrusion extending upward from the bottom, and a groove provided on the protrusion Or through hole;

When the at least two electronic units are assembled at predetermined positions within the housing, the remaining positioning projections of the at least two electronic units are engaged in the corresponding slots or through holes.

7. The outer casing of an electronic unit according to claim 6, wherein a side of the outer casing is provided with a service port, and the inspection port is located at a position corresponding to the groove or the through hole.

The outer casing of the electronic unit according to any one of claims 1 to 5, wherein the engaging portion is an engaging claw extending upward from the bottom;

When the at least two electronic units are assembled at predetermined positions within the outer casing, the remaining positioning projections of the at least two electronic units are engaged with the respective engaging claws.

9. The housing of an electronic unit according to claim 8, wherein a bottom of the housing is provided with an access opening, and the access opening is located at a position corresponding to the engaging claw.