CN201491416U

CN201491416U - Shell for electronic components

Info

Publication number: CN201491416U
Application number: CN2009201622764U
Authority: CN
Inventors: 钦疾风; 宋东健
Original assignee: AIPUKESI ELECTRONIC ELEMENT (ZHUHAI BONDED AREA) Co Ltd
Current assignee: AIPUKESI ELECTRONIC ELEMENT (ZHUHAI BONDED AREA) Co Ltd; Epcos Zhuhai Co Ltd
Priority date: 2009-08-07
Filing date: 2009-08-07
Publication date: 2010-05-26
Anticipated expiration: 2019-08-07

Abstract

The utility model discloses a shell (1) for electronic components, which comprises a first cover and a second cover which are connected with each other, wherein the longitudinal section of the shell (1) is provided with a round upper part and a trapezoid lower part, wherein the trapezoid lower part is provided with a first bottom edge and a second bottom edge; the first bottom edge and the second bottom edge are parallel to each other; and the diameter (3) of the round upper part corresponds to the longer edge (3) of the first bottom edge and the second bottom edge.

Description

The shell that is used for electronic devices and components

Technical field

The present invention relates to a kind of shell that is used for electronic devices and components.

Background technology

The electronic devices and components that are installed on the circuit board may produce heat during operation, and may cause freely burning fire and blast.The shell that is used for electronic devices and components can prevent the flame effusion, thereby prevents that other components and parts on the plate from catching fire.

Shell can form the cube box that occupies relatively large space on circuit board.

Summary of the invention

A kind of shell that is used for electronic devices and components is provided, and this shell comprises first lid that is connected in second lid.The longitudinal section of shell has circular upper and trapezoidal bottom, and trapezoidal bottom has first base and second base.First base is parallel with second base.One length bigger in the diameter of circular upper and first base and second base is corresponding.Compare with traditional shell, the space that this shell occupies on circuit board is less.And the longitudinal section of shell does not have recess, and this has for example reduced when the components and parts that hold are installed on the circuit board, and another element is stuck in the risk in the recess of shell.

In one embodiment, circular portion is semicircular.In another embodiment, circular portion is half elliptic.

Trapezoidal is the shape with four straight flanges (opposite side with pair of parallel).Other limit is not parallel.Parallel limit is trapezoidal base.In the sectional view of shell, bigger one is to go up the base in the base.

In an execution mode of shell, first lid comprises first clamping apparatus.Second lid comprises and is configured to second clamping apparatus that is connected with first clamping apparatus.Engagement connection is not easy to unclamp.

In one embodiment, shell comprises the material of polyphenylene sulfide (PPS) material or similar PPS, is perhaps made by the material of PPS material or similar PPS, and this guarantees that shell is a back-fire relief.The shell that comprises the PPS material and have a good sealing intensity can prevent that fire or blast from enlarging under overvoltage and/or excessive leakage current.

An execution mode of shell has the wiring hole in the bottom sidewall that is arranged at least one in covering of first lid and second.Wiring hole is constructed so that the wiring of components and parts can extend through wiring hole.Components and parts can be installed on the circuit board by wiring.

In one embodiment, first lid comprises the sidewall that forms recess.Second lid also comprises the sidewall that forms recess.At least a portion of the sidewall of first lid is inserted in the recess of second lid, the lid and second of winning is covered relative to each other install at preposition.

In one embodiment, the recess of at least one in first lid and second lid has circular portion and projected square part, and wherein the width of projected square part is littler than the diameter of circular portion.One sidewall in first lid and second lid can form with its front side and flush.In one embodiment, the edge of front side is circular.Between front side and sidewall, there is not recess.The width of sidewall changes, and makes that the some parts of sidewall is highly stable.

Description of drawings

Fig. 1 shows the front view of the shell of embedded electronic devices and components.

Fig. 2 shows the end view of shell.

Fig. 3 shows the front view of first lid of shell.

Fig. 4 shows the sectional view of first lid along A-A ' line of Fig. 3.

Fig. 5 shows the rearview of first lid along the B direction of Fig. 4.

Fig. 6 shows the upward view of first lid along the C direction of Fig. 3.

Fig. 7 shows the 3-D view of first lid.

Fig. 8 shows the front view of second lid.

Fig. 9 shows the sectional view of second lid along A-A ' line of Fig. 8.

Figure 10 shows the rearview of second lid along the B direction of Fig. 9.

Figure 11 shows the upward view of second lid along the C direction of Fig. 8.

Figure 12 shows the 3-D view of second lid.

Embodiment

Fig. 1 shows the front view of the shell 1 of embedded electronic devices and components.The longitudinal section of shell 1 has circular upper and trapezoidal bottom, and this trapezoidal bottom has last base 3 and bottom.The length on last base 3 is corresponding with the diameter of circular portion 3.In other words, the longitudinal section of shell had not both had recess not cave in yet.

Shell 1 packaging electronic parts.The wiring 2 of electronic component extends through the opening in the shell 1.In one embodiment, shell 1 packaged resistance device.In substituting execution mode, shell 1 encapsulation rheostat forms anti-fault rheostat.Shell 1 has good sealing intensity.After the rheostat that the epoxy resin of standard is applied was assembled in the shell, rheostat can the mode with self-protection be operated under for example specific test condition.Avoided catching fire and exploding.Under specific test condition, rheostat can stand V _RMSTest (V _RMS=0.85Vv, 1mA), the resistor in series of the quick action fuse of this rheostat and 5A and 5 Ω is up to fuse failure.

Fig. 2 shows the end view of shell 1.Shell 1 is preferably made by back-fire relief and/or explosion-proof plastics, is for example made by PPS.Substituting execution mode is made by heat resistanceheat resistant, another kind of material antiacid and/or alkali resistant.

Shell 1 comprises first lid, 4 and second lid 14, thereby it is installed together formation shell 1.

Fig. 3 shows the front view of first lid 4.(dotted line is represented sightless feature in this visual angle).The front side 9 of first lid 4 is front sides of shell 1.Front side 9 has circular upper and has the trapezoidal bottom on last base 3.The length on last base 3 is corresponding with the diameter of circular portion 3.

Fig. 4 shows the sectional view of first lid 4 along A-A ' line of Fig. 3.Fig. 5 shows the rearview of first lid 4 along the B direction of Fig. 4.

As shown in Figure 5, first lid 1 comprises

sidewall

5,8, and

sidewall

5,8 forms the recess 6 with circular portion and projected square part, and wherein the width of projected square part is less than the diameter of circular portion.In substituting execution mode (not shown), recess has circular upper and trapezoidal bottom.

Inboard at first lid 4 is formed with staggered compressing tablet 13.On the lateral wall 5 at first lid, 4 top, be provided with projection 7.Projection 7 can be fundamental triangle or hook-type profile.Inboard at the sidewall 8 of first lid, 4 bottom is provided with groove 12.Projection 7 and groove 12 are as first clamping apparatus, and second clamping apparatus that this first clamping apparatus is configured to provide with second lid, 14 (not shown among Fig. 3 to 7) links.

The height of the bottom sidewall 8 of first lid 4 is less than the height of the other parts of sidewall 5, and as Fig. 6 and shown in Figure 5, Fig. 6 shows the upward view of first lid 4, and Fig. 5 shows the 3-D view of first lid 4.

Be provided with wiring hole 10 in bottom sidewall 8, the wiring 2 of electronic devices and components can extend through this wiring hole 10.Be provided with other hole 11 in bottom sidewall 8, this hole 11 can be used as the ventilation hole that prevents that shell 1 from being sealed fully, and the impulsive force and the flame of the components and parts of feasible blast are cushioned.

Fig. 8 shows the front view of second lid 14.After shell 1 assembled, the front side 19 of second lid 14 was as the rear side of shell 1.Front side 19 has circular upper and has the trapezoidal bottom on last base 3.The length on last base 3 is corresponding with the diameter of circular portion 3.

Fig. 9 shows the sectional view of second lid 14 along A-A ' line of Fig. 8.Figure 10 shows the rearview of second lid 14 along the B direction of Fig. 9.

As shown in figure 10, second lid 14 has

sidewall

15,18, and

sidewall

15,18 forms the recess 16 with circular portion and projected square part, and wherein the width of projected square part is less than the diameter of circular portion.In substituting execution mode (not shown), recess has circular upper and trapezoidal bottom.

Inboard at second lid, 14 middle section is formed with staggered compressing tablet 13.After components and parts were installed, the compressing tablet 13 of first lid, 4 and second lid 14 was suitable for closely pushing components and parts, shakes to prevent components and parts.

On the madial wall 15 at second lid, 14 top, be provided with groove 17.Groove 17 matches with the projection 7 of first lid 4.Projection 7 engages with groove 17, thereby forms engagement connection.

In the inboard of second lid, 14 bottom sidewall 18, form projection 22 with hook-type profile.The groove 12 of first lid 4 matches with the projection 22 of second lid 14.When first lid 4 to second lid 14 when moving, projection 22 engages with groove 12, thus the formation engagement connection.

The projection 22 of second lid 14 and groove 17 are as second clamping apparatus, and this second clamping apparatus is configured to link with first lid, 4 first clamping apparatus that provide.

The height of the bottom sidewall 18 of second lid 14 is less than the height of the other parts of sidewall 15, and as Figure 11 and shown in Figure 12, Figure 11 shows the upward view of second lid 14, and Figure 12 shows the 3-D view of second lid 14.The height of the bottom sidewall 8 of the height of the bottom sidewall 18 of second lid 14 and first lid 4 matches, and makes that

bottom sidewall

8 and 18 forms the no gap diapire of shell 1 after first lid 4 is mounted to second lid 14.When first lid 4 is mounted to second lid 14 the time, whole parts of the sidewall 5 of first lid 4 are inserted in the recess 16 of second lid 14.

Other execution mode all within the scope of the claims.The element combinations of different execution modes can be got up does not have the special herein execution mode of describing to form.

Claims

1. shell (1) that is used for electronic devices and components, comprise first lid (4) that is connected in second lid (14), the longitudinal section of wherein said shell (1) has circular upper and trapezoidal bottom, described trapezoidal bottom has first base and second base, described first base is parallel with described second base, and the length of bigger one (3) is corresponding in the diameter of described circular upper (3) and described first base and described second base.

2. shell according to claim 1 (1), wherein said first lid (4) comprises first clamping apparatus (7,12), and wherein said second lid (14) comprises and is configured to second clamping apparatus (17,22) that is connected with described first clamping apparatus (7,12).

3. shell according to claim 1 (1), wherein said shell (1) comprises the material of polyphenyl thioether material or similar polyphenylene sulfide.

4. shell according to claim 1 (1), wherein be provided with wiring hole (10) in the bottom sidewall (8,18) of at least one in described first lid (4) and described second lid (14), described wiring hole (10) is constructed so that the wiring (2) of described components and parts can extend through described wiring hole (10).

5. shell according to claim 1 (1), wherein said first lid (4) comprises the sidewall (5,8) that forms recess (6), and wherein said second lid (14) comprises the sidewall (15,18) that forms recess (16), and at least a portion (5) of the sidewall of described first lid (4) is inserted in the described recess (16) of described second lid (14).

6. shell according to claim 5, wherein, the recess (6,16) of at least one in described first lid (4) and described second lid (14) has circular portion and projected square part, and the width of described projected square part is less than the diameter of described circular portion.

7. shell according to claim 6 (1), one the sidewall (15,18) in wherein said first lid (4) and described second lid (14) forms with described first lid (4) and described second described one front side of covering in (14) (19) and flushes.