CN203504894U - Shell for containing electronic units - Google Patents

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 an electronic unit

technical field

The utility model relates to a housing for accommodating electronic units. the

Background technique

In an electronic device, it often contains a plurality of smaller electronic units, and the plurality of electronic units are generally detachably accommodated in the housing of the electronic unit, so as to avoid the collision of the various electrical components in the electronic unit due to installation and transportation. Damaged by external force. However, in the prior art, one housing can only accommodate a single electronic unit, and if multiple electronic units need to be used, an additional device is often needed to connect the housings of the multiple electronic units in parallel. Further, in the prior art, even if there is a housing that can accommodate multiple electronic units at the same time, the housing is only a combination of multiple housings that accommodate a single electronic unit. Not only is the housing bulky, but the maintenance and replacement of the electronic units contained therein not convenient. Furthermore, in the prior art, it is sometimes necessary to connect more than two electronic units with different functions to each other through a circuit board, so that the electronic device can realize functions such as detection and display simultaneously. However, in this case, it is often necessary to make a special housing to accommodate more than two electronic units according to special needs, which greatly increases the manufacturing cost of the device. the

Utility model content

An object of the present invention is to provide a casing for containing an electronic unit, which can overcome the above-mentioned defects with a simple structure. the

According to one aspect of the present invention, there is provided a casing for accommodating an electronic unit. The casing is in the shape of a cuboid box with one side open, and at least two electronic units are detachably accommodated in the casing, wherein the two opposite sides of each electronic unit At least one positioning protrusion extending toward the outside of the electronic unit is respectively arranged on the walls. Both end walls of the housing in the length direction are provided with positioning notches respectively corresponding to at least one positioning protrusion. The bottom of the housing is provided with at least one engaging portion extending upwards. When at least two electronic units are assembled at predetermined positions in the casing, among the two electronic units adjacent to the two end walls of the casing respectively, among the two side walls of each electronic unit adjacent to the corresponding end walls At least one positioning protrusion on the side wall is engaged in the positioning notch on the corresponding end wall. The remaining positioning protrusions of at least two electronic units are engaged with corresponding engaging parts. the

With the case for accommodating electronic units having the above structure, a plurality of electronic units can be accommodated in the same case with a simple structure, and each electronic unit can be easily disassembled. the

Preferably, in the housing for accommodating electronic units provided by the present invention, when at least two electronic units are assembled at predetermined positions in the housing, among two adjacent electronic units, the two adjacent side walls The corresponding positioning protrusion in the middle is engaged with the same engaging part. the

Through 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. the

Furthermore, in the case for accommodating electronic units provided by the present invention, at least one positioning protrusion respectively provided on two opposite side walls of each electronic unit is more than two positioning protrusions. The at least one engaging portion provided on the bottom of the casing is more than two engaging portions, wherein the engaging portions located between two adjacent side walls of two adjacent electronic units are equal in number to the two More than two positioning protrusions on each of the side walls correspond to each other. the

Furthermore, in the case for accommodating electronic units provided by the present invention, at least one positioning protrusion respectively provided on two opposite side walls of each electronic unit is more than two positioning protrusions. At least one engaging portion provided on the bottom of the casing is more than two engaging portions, wherein the engaging portion located between two adjacent side walls of two adjacent electronic units is close to the two sides The number of engaging portions of one side wall in the walls corresponds to more than two positioning protrusions on the one side wall. the

Furthermore, in the case for accommodating electronic units provided by the present invention, at least one positioning protrusion respectively provided on two opposite side walls of each electronic unit is more than two positioning protrusions. The positioning notches provided on each end wall of the housing in the length direction are at least two positioning notches, and the at least two positioning notches are aligned with more than two positioning protrusions on one of the two side walls of the electronic unit. One to one correspondence. the

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. the

Furthermore, in the case 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 on the protrusion. When the at least two electronic units are assembled at predetermined positions in the casing, the remaining positioning protrusions of the at least two electronic units are engaged in corresponding slots or through holes. the

Furthermore, in the case for accommodating the electronic unit provided by the present invention, an inspection port is provided on the side wall of the case, and the inspection port is located at a position corresponding to the groove or the through hole. the

With such a structure, the electronic unit accommodated in the housing can be easily disassembled by a simple operation. Furthermore, in the case for accommodating the electronic unit provided by the present invention, the engaging portion is an engaging claw extending upward from the bottom. When the at least two electronic units are assembled at predetermined positions in the housing, the rest of the positioning protrusions of the at least two electronic units engage with the corresponding engaging claws. the

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

With such a structure, the electronic unit accommodated in the housing can be easily disassembled by a simple operation. the

According to the purpose, effect and structural configuration disclosed in the present utility model, preferred embodiments are listed below, and are described in detail with accompanying drawings. the

Description of drawings

Fig. 1 is the schematic diagram according to the assembly state of the casing that accommodates electronic unit and electronic unit according to the first embodiment of the present utility model;

Fig. 2 is a schematic side sectional view of the assembled state of the housing and the electronic unit of the first embodiment of the utility model shown in Fig. 1;

Figure 3 is an enlarged schematic view of the area surrounded by circle A in Figure 2;

Fig. 4 is a schematic end view of the housing of the first embodiment of the utility model shown in Fig. 1;

Fig. 5 is the side view of the housing of the first embodiment of the utility model shown in Fig. 1;

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

Fig. 7 is a partial cross-sectional view of the assembly state of the housing containing the electronic unit and the electronic unit according to the second embodiment of the present utility model;

FIG. 8 is an enlarged schematic view of the area surrounded by circle C in FIG. 7 . the

Detailed ways

The housing for accommodating electronic units described in the utility model can be used in various occasions where electronic units are used. Next, the structure of the housing containing the electronic unit provided by the present invention and its assembly with the electronic unit will be described in detail with reference to the preferred embodiment and the accompanying drawings. the

The preferred embodiments according to the present utility model will be introduced below with reference to the appended description drawings. According to the first embodiment of the present invention, there is provided a casing for accommodating an electronic unit. More specifically, Fig. 1 of the appended specification is a schematic diagram of the assembly state of the housing 1 and the electronic unit 2 installed therein according to the first embodiment of the present utility model. Accompanying drawing 2 of the description is a schematic side sectional view of the assembled state of the housing 1 and the electronic unit 2 of the first embodiment of the present invention shown in FIG. 1 . Accompanying drawing 3 of the specification is an enlarged schematic view of the area surrounded by circle A in FIG. 2 . Accompanying drawing 4 of the description is a schematic end view of the housing 1 of the first embodiment of the present invention shown in Fig. 1 . Accompanying drawing 5 of the description is a side view of the housing 1 of the first embodiment of the utility model shown in FIG. 1 . Figure 6 of the specification is an enlarged schematic view of the area surrounded by circle B in Figure 5 . As shown in accompanying drawings 1-6, according to one aspect of the present invention, a casing 1 for accommodating an electronic unit is provided. The shell 1 is in the shape of a cuboid box with one side open. At least two electronic units 2 are detachably housed in the casing 1 . At least one positioning protrusion 23 extending toward the outside of the electronic unit 2 is respectively provided on two opposite side walls 24 of each electronic unit 2 . Positioning notches 16 respectively corresponding to at least one positioning protrusion 23 are provided on both end walls 15 of the housing 1 in the length direction. The bottom of the housing 1 is provided with at least one engaging portion 11 extending upward. When at least two electronic units 2 are assembled at predetermined positions in the housing 1, among the two electronic units 2 adjacent to the two end walls 15 of the housing 1 respectively, the two side walls 24 of each electronic unit 2 are connected to The positioning protrusion 23 on the adjacent side wall 24 of the corresponding end wall 15 is engaged in the positioning recess 16 on the corresponding end wall 15, and the remaining positioning protrusions 23 of at least two electronic units 2 are aligned with the corresponding card The joint part 11 is engaged. Furthermore, in the present invention, the at least one positioning protrusion 23 respectively provided on the two opposite side walls 24 of each electronic unit 2 is more than two positioning protrusions 23 . By having such a configuration, the electronic unit 2 can be firmly fixed in the casing 1 by the two or more positioning protrusions 23 . the

More specifically, as shown in FIGS. 1-5 , in the first embodiment of the present invention, two electronic units 2 are detachably accommodated in the housing 1 , and the two electronic units 2 are arranged side by side in the housing 1 . More specifically, in this embodiment, the same side portions of the two electronic units 2 are connected to each other through a circuit board, and the other side portions of the two electronic units 2 have completely identical structures. More specifically, as shown in FIG. 1 , in this embodiment, two connected electronic units 2 are provided with a display screen 21 and buttons 22 on the bottom surface exposed through the open end of the casing 1 . More specifically as shown in Figure 2, in the first embodiment of the present utility model, two positioning protrusions 23 are respectively arranged on the two opposite side walls 24 of each electronic unit 2, and the two positioning protrusions 23 all extend toward the outside of the electronic unit 2 . More specifically, in this embodiment, each positioning protrusion 23 is formed in a form protruding from the outer surface of the side wall 24 of the electronic unit 2. More specifically, each positioning protrusion 23 is formed in the form of a cantilever claw protruding outward from the outer surface of the side wall 24 of the electronic unit 2 , so as to facilitate the assembly and disassembly of the electronic unit 2 relative to the housing 1 . More specifically, in this embodiment, the two positioning protrusions 23 provided on each side wall 24 are arranged side by side in a row along a direction parallel to the bottom surface of the electronic unit 2 . the

Furthermore, as shown in FIG. 2 , positioning notches 16 corresponding to the two positioning protrusions 23 on the adjacent side walls 24 are respectively provided on the two end walls 15 of the housing 1 in the length direction. More specifically, in the present utility model, the positioning notches 16 provided on each end wall 15 of the housing 1 in the length direction are at least two positioning notches 16, and the at least two positioning notches 16 are connected with the electronic unit At least two positioning projections 23 on one of the two side walls 24 of the 2 correspond to each other. More specifically, in this embodiment, as shown in FIG. 2 , two positioning notches 16 are provided on each end wall 15 of the housing 1 in the length direction, and the two positioning notches 16 are connected with the electronic unit 2 The two positioning protrusions 23 on one of the two side walls 24 correspond to each other. the

In this way, in this embodiment, when the two electronic units 2 are assembled at predetermined positions in the casing 1, the side wall adjacent to the corresponding end wall 15 of the two side walls 24 of each electronic unit 2 The two positioning protrusions 23 on the corresponding end wall 15 are snapped into the corresponding positioning notches 16 on the corresponding end wall 15 . the

Furthermore, as shown in Figures 2-3, in the present invention, the bottom of the housing 1 (that is, the closed bottom of the housing 1 opposite to the open part) is provided with an upward extension (that is, extending toward the inside of the housing 1) at least one engaging part 11. When the at least two electronic units 2 are assembled at predetermined positions in the housing 1 , the remaining positioning protrusions 23 of the at least two electronic units 2 engage with the corresponding engaging portions 11 . In the present utility model, the expression "other positioning protrusions 23" refers to: in at least two electronic units 2, other than the positioning protrusions 23 on the side wall 24 adjacent to the end wall 15 of the housing 1 Raised 23. More specifically, in this embodiment, the bottom of the housing 1 is provided with two engaging portions 11, and the two engaging portions 11 are respectively connected to one of the two side walls 24 of the electronic unit 2. The two positioning protrusions 23 are corresponding, so that when the two electronic units 2 are assembled at predetermined positions in the casing 1, each side wall 24 of the two adjacent side walls 24 of the two electronic units 2 The two positioning protrusions 23 are engaged in the corresponding engaging portions 11 . the

Furthermore, in the present utility model, when at least two electronic units 2 are assembled at predetermined positions in the casing 1, in two adjacent electronic units 2, the corresponding positioning protrusions in the two adjacent side walls 24 23 is engaged with the same engaging portion 11. More specifically, in this embodiment, when the two electronic units 2 are assembled at predetermined positions in the housing 1, the corresponding positioning protrusions 23 in the two adjacent side walls 24 are aligned with the same engaging portion. 11 Snaps. More specifically, as shown in FIGS. 2-4 , in this embodiment, when two electronic units 2 are assembled in the casing 1, the two positioning protrusions 23 provided on the two adjacent side walls 24 - A pair of positioning protrusions 23 corresponding to each other and corresponding to each other are engaged with the same engaging portion 11 . the

Through such a configuration, two electronic units 2 can be snapped into the housing 1 through a simple structure, and the volume of the housing 1 capable of accommodating a plurality of electronic units 2 is greatly reduced, while the electronic units 2 can be easily removed from the housing. 1 for disassembly. the

More specifically, in the present invention, as shown in FIGS. 2-4 , the engaging portion 11 can be configured as follows: including a protrusion extending upward from the bottom of the housing 1 (that is, extending toward the inside of the housing 1 ) 12, and the groove or through hole 13 provided on the protrusion 12. With such a configuration, when at least two electronic units 2 are assembled at predetermined positions in the housing 1, the rest of the positioning protrusions 23 of the at least two electronic units 2 are engaged in the corresponding grooves or through holes 13, so that the electronic units 2, the side wall 24 that is not adjacent to the end wall 15 of the housing 1 is fixed at a predetermined position in the housing 1 through the engagement between the positioning protrusion 23 formed on the side wall 24 and the corresponding groove or through hole 13. . the

More specifically, as shown in FIGS. 2-4 , in this embodiment, the protrusion 12 extends from the bottom of the housing 1 toward the interior of the housing 1 , and a through hole 13 is formed in the middle of the protrusion 12 . When the two electronic units 2 are assembled at predetermined positions in the casing 1, each positioning protrusion 23 on each side wall 24 of the two opposite side walls 24 of the two electronic units 2 snaps into the corresponding In the through hole 13 of the locating protrusion 23 and the corresponding engaging part 11 is realized. the

It should be noted that, in this embodiment, when the two electronic units 2 are assembled in the casing 1, a pair of corresponding positioning protrusions 23 on the side walls 24 opposite to each other of the two electronic units 2 are snapped into simultaneously. In the same engaging portion 11 , that is, the pair of corresponding positioning protrusions 23 are engaged into the through holes 13 of the same engaging portion 11 at the same time. However, the present invention is not limited thereto. Those skilled in the art can easily imagine that, according to actual use and design requirements, a groove is selected to be formed on the protrusion 12 of the engaging portion 11, and the corresponding positioning protrusion 23 is engaged. The engagement between the engaging portion 11 and the positioning protrusion 23 is realized in the groove of the engaging portion 11 . the

Furthermore, in the present utility model, as shown in Figures 5-6 of the specification, an inspection port 14 is provided on the side wall of the housing 1 of the present invention, and the inspection port 14 is used for the user to disassemble and install the housing 1 Electronics unit 2 inside. More specifically, as shown in Figures 5-6, in this embodiment, the inspection port 14 is located on the side wall of the housing 1 at a position corresponding to the groove or the through hole 13 of the engaging portion 11. By forming such an inspection port, when the user needs to disassemble the electronic unit 2 installed in the casing 1, he only needs to insert a common tool such as a screwdriver into the inspection port 14, and push the corresponding positioning protrusion 23 through the screwdriver. So that the positioning protrusion 23 and the groove or the through hole 13 of the engaging portion 11 are out of engagement with each other. In this way, the electronic unit 2 installed in the housing 1 can be easily disassembled, which simplifies the replacement or maintenance steps of the electronic unit 2 and greatly reduces the time required for replacement or maintenance. the

It should be noted that, in this embodiment, the inspection port 14 is provided on the side wall of the casing 1 and is located at a position corresponding to the groove or the through hole 13 of the engaging portion 11 . But the utility model is not limited thereto, and those skilled in the art can easily imagine that according to actual use and design requirements, the inspection port 14 can be arranged at any position on the peripheral wall of the casing 1, as long as the inspection port 14 is provided at a position It only needs to be convenient for the user to move the positioning protrusion 23 of the electronic unit 2 . the

Furthermore, in this embodiment, two electronic units 2 are accommodated in the casing 1 . However, the present invention is not limited thereto. Those skilled in the art can easily imagine that according to actual use and design requirements, the number of electronic units 2 accommodated in the casing 1 can be selected arbitrarily, for example, more than three electronic units 2 . When a plurality of electronic units 2 need to be accommodated in the housing 1 , the plurality of electronic units 2 can be arranged side by side in a row, or arranged in various forms. the

Furthermore, in this embodiment, two positioning protrusions 23 are respectively provided on the two opposite side walls 24 of each electronic unit 2 . But the utility model is not limited thereto. Those skilled in the art can easily imagine that according to actual use and design requirements, the number of positioning protrusions 23 arranged on a side wall 24 can be arbitrarily selected, such as one or more than three positioning protrusions. Raised 23. Further, the arrangement of the two or more positioning protrusions 23 can be arranged side by side in a row, or arranged in other various forms. As long as the electronic unit 2 can be stably installed in the casing 1 through the positioning protrusion 23 on the side wall 24 . the

Furthermore, in this embodiment, two engaging portions 11 are provided on the bottom of the housing 1 . However, the present invention is not limited thereto. Those skilled in the art can easily imagine that the number and form of the engaging parts 11 can be arbitrarily selected according to actual use and design requirements. For example, in the above-mentioned first embodiment, a single engaging portion 11 may also be formed, and in this case, the engaging portion 11 extends to cover the entire width direction of the housing 1 . Through such a configuration, not only can a pair of positioning protrusions 23 corresponding to each other on two adjacent side walls 24 be engaged with the same engaging portion 11, but also all two pairs of positioning protrusions 23 can be engaged. fit into the same engaging part 11. Of course, in the present utility model, there can also be more than three engaging parts 11 provided on the bottom of the housing 1, as long as the two electronic units 2 are assembled at predetermined positions in the housing 1, the two electronic units 2 are connected to each other. It only needs that the two positioning protrusions 23 on each of the two adjacent side walls 24 can be engaged in the corresponding engaging portion 11 . the

Furthermore, in the above-mentioned embodiment, when at least two electronic units 2 are assembled at predetermined positions in the casing 1, in two adjacent electronic units 2, the corresponding positioning protrusions in the two adjacent side walls 24 23 is engaged with the same engaging portion 11. However, the present invention is not limited thereto. Those skilled in the art can easily imagine that according to actual use and design requirements, the corresponding positioning protrusions 23 in the two adjacent side walls 24 are selected to be engaged with different positioning protrusions. In the engaging part 11. More specifically, in the present invention, among the at least one engaging portion 11 provided on the bottom of the casing 1, the engaging portion located between two adjacent side walls 24 of two adjacent electronic units 2 11 , the engaging portion 11 close to one sidewall 24 of the two sidewalls 24 corresponds in number to at least two positioning protrusions 23 on the one sidewall 24 . That is to say, in the present invention, the pair of positioning projections 23 on the two adjacent side walls 24 can also be respectively engaged in the respective corresponding engaging parts 11, as long as at least two electronic units can 2 When assembled at a predetermined position in the casing 1, it is enough that the remaining positioning protrusions 23 of at least two electronic units 2 are engaged with the corresponding engaging portions 11. the

Next, the second embodiment of the present utility model will be described with reference to accompanying drawings 7-8 of the specification. The difference between the second embodiment and the above-mentioned first embodiment is that in this second embodiment, the specific structural form of the engaging portion 11 is different from that of the above-mentioned first embodiment. As shown in FIGS. 7-8 , in the second embodiment, the engaging portion 11 is an engaging claw 16 extending upward from the bottom of the housing 1 . When the at least two electronic units 2 are assembled at predetermined positions in the housing 1 , the remaining positioning protrusions 23 of the at least two electronic units 2 are all engaged with the corresponding engaging claws 16 . More specifically, as shown in FIGS. 7-8 , in the second embodiment, the engaging claw 16 in the engaging portion 11 extends from the housing 1 toward the inside of the housing 1 , and the free end of the engaging claw 16 faces toward The electronics unit 2 extends. With such a structure, the electronic unit 2 can be positioned at a predetermined position of the housing 1 through the engagement between the positioning protrusion 23 on the side wall 24 of the electronic unit 2 and the engaging claw 16 . Furthermore, in this embodiment, the position and quantity of the engaging claws 16 are similar to those of the above-mentioned first embodiment, and the detailed description thereof is omitted here. More specifically, as shown in FIG. 8 , in this embodiment, the connecting portion of each engaging claw 16 and the housing 1 is formed with a cantilever structure. Through such a structure, the engaging claw 16 can withstand external force. The cantilever structure is displaced relative to the housing 1, so that the engaging claw 16 is disengaged from the engagement with the corresponding positioning protrusion 23. the

Similarly, in the second embodiment, an inspection opening 17 may be provided at the bottom of the housing 1 , and the inspection opening 17 is located at a position corresponding to the engaging claw 16 . When the user needs to disassemble the electronic unit 2 installed in the casing 1, the user inserts a common tool such as a screwdriver into the inspection port 17, and pushes the corresponding engaging claw 16 through the screwdriver, so that the engaging claw 16 and the The corresponding positioning protrusions 23 are out of engagement with each other. Similar to the above-mentioned first embodiment, according to this embodiment, those skilled in the art can easily imagine that according to actual use and design requirements, the inspection port 17 can be arranged at any position on the peripheral wall of the casing 1, as long as the inspection port 17 is provided at a position where it is convenient for the user to move the engaging claw 16 . Furthermore, according to the above-mentioned embodiment, the inspection port 17 can also be provided on the engaging claw 16 so that the user can directly operate the engaging claw 16 . the

Furthermore, in the present utility model, a plurality of ribs extending toward the outside of the housing 1 can also be provided on the outer surface of the bottom of the housing 1, the ribs can not only strengthen the bottom strength of the housing 1, but also can strengthen the electronic unit 2. Terminals or terminal washers may be used at the ends to limit the position. the

The above are the preferred embodiments and accompanying drawings of the utility model, only the preferred embodiments and accompanying drawings are illustrated, and are not intended to limit the scope of rights of the utility model technology, all with the same technical means, or for the following rights The implementation of the scope of rights covered by the claims does not depart from the scope of the present utility model but is the applicant's scope of rights. the

Claims (9)

1. a shell that holds electronic unit, described shell is the unlimited cuboid box-like of a side, in described shell, removably hold at least two electronic units, wherein, on two sidewalls that described in each, electronic unit is relative, be respectively arranged with at least one positioning convex towards this electronic unit extension; It is characterized in that:

On described shell two end walls in the longitudinal direction, be provided with corresponding with described at least one positioning convex respectively positioning recess; And,

The bottom of described shell is provided with upwardly extending at least one holding section; Wherein

When described at least two electronic units are assemblied in the precalculated position in described shell:

In two electronic units adjacent with described two end walls difference of described shell, described at least one positioning convex in described two sidewalls of each electronic unit on the sidewall adjacent with corresponding end wall is sticked in the described positioning recess on this corresponding end wall, and

All the other positioning convex of described at least two electronic units engage with corresponding described holding section.

2. the shell of electronic unit as claimed in claim 1, it is characterized in that, when described at least two electronic units are assemblied in the precalculated position in described shell, in two adjacent electronic units, positioning convex corresponding in two sidewalls adjacent one another are engages with same holding section.

3. the shell of electronic unit as claimed in claim 2, is characterized in that, at least one positioning convex arranging respectively on two sidewalls that described in each, electronic unit is relative is two above positioning convex; Described at least one holding section of described outer casing bottom setting is plural holding section, wherein, the holding section between two sidewalls adjacent one another are of two adjacent electronic units is quantitatively corresponding one by one with more than two positioning convex on each sidewall in these two sidewalls.

4. the shell of electronic unit as claimed in claim 1, is characterized in that, at least one positioning convex arranging respectively on two sidewalls that described in each, electronic unit is relative is two above positioning convex; Described at least one holding section of described outer casing bottom setting is plural holding section, wherein, in holding section between two sidewalls adjacent one another are of two adjacent electronic units, quantitatively corresponding one by one with at least one positioning convex on this sidewall near the holding section of a sidewall in these two sidewalls.

5. the shell of electronic unit as claimed in claim 1, is characterized in that, at least one positioning convex arranging respectively on two sidewalls that described in each, electronic unit is relative is two above positioning convex; The positioning recess arranging on described shell each end wall is in the longitudinal direction at least two positioning recess, and two above positioning convex on one of two sidewalls of these at least two positioning recess and described electronic unit are corresponding one by one.

6. the shell of the electronic unit as described in any one in claim 1-5, is characterized in that, described holding section comprises from the upwardly extending jut in described bottom, and is arranged at groove or the through hole on this jut;

When described at least two electronic units are assemblied in the precalculated position in described shell, all the other positioning convex of described at least two electronic units are sticked in corresponding described groove or through hole.

7. the shell of electronic unit as claimed in claim 6, is characterized in that, on the sidewall of described shell, is provided with access hole, and described access hole is positioned at the position corresponding with described groove or through hole.

8. the shell of the electronic unit as described in any one in claim 1-5, is characterized in that, described holding section is from the upwardly extending engagement pawl in described bottom;

When described at least two electronic units are assemblied in the precalculated position in described shell, all the other positioning convex of described at least two electronic units all engage with each other with corresponding described engagement pawl.

9. the shell of electronic unit as claimed in claim 8, is characterized in that, the bottom of described shell is provided with access hole, and described access hole is positioned at the position corresponding with described engagement pawl.

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