CN201218926Y

CN201218926Y - Expansion card mechanism

Info

Publication number: CN201218926Y
Application number: CNU2008201265688U
Authority: CN
Inventors: 陈志强
Original assignee: Bisheng Science & Technology Co Ltd
Current assignee: Bisheng Science & Technology Co Ltd; COMPUPACK Tech CO Ltd
Priority date: 2008-07-02
Filing date: 2008-07-02
Publication date: 2009-04-08
Anticipated expiration: 2018-07-02

Abstract

The utility model discloses an expanded card construction, which comprises a upper outer case, a lower outer case, a plastic blocking board and an interface plug, used for coating and protecting the circuit board and forming an expanded card having an interface plug. Positioning guide rails are formed on both sides of the plastic frame, which is used for engaging with internal side of concave slots on both sides of the lower outer case to make the plastic frame slide downward into the lower outer case, until the positioning boss of the plastic frame is clamped into the positioning hole of the lower outer housing, and two positioning bosses on the plastic blocking board engages the two corresponding positioning guide rails of the plastic frame, being fixed, thus protection is formed. Then the circuit board and the interface plug are configured in the lower outer case, the positioning hook of the upper outer case and the positioning concave slot of the plastic frame are positioned, the positioning guide rail is inserted into the outer edge guide rail of the upper outer case, making the upper outer case closely engage with lower outer case, so as to protect the circuit board therein, and to form the expanded card having the interface plug and hard outer case.

Description

Expansion board mechanism

Technical field

The utility model relates to a kind of expansion board mechanism, relates in particular to a kind of combining mechanism that improves upper and lower shell in the expansion board.

Background technology

Often need different expansion boards in the present electronic product, to increase range of application, memory card for example miscellaneous, USB card and wireless network card.The expansion board in these different application fields needs firm shell; with protection circuit board wherein, use the metal shell of Stainless Steel or almag usually, cooperate suitable mechanism design with the ambroin assembly again; allow shell form and combine closely, to reach the function of electric insulation and protection.

Consult Fig. 1 and Fig. 2, the synoptic diagram of the plastic frame of expansion board, joint and lower casing in the prior art, wherein plastic frame 10 has detent 11a, 11b, 11c, 11d, 11e, 11f and 11g, in order to cooperate

location crotch

21a, 21b, 21c, 21d, 21e, 21f and the 21g of lower casing 20, allow corresponding location crotch fasten detent, shown in the side view of Fig. 2 the right, the location crotch forms C shape crotch.In addition, the pilot hole 17 of plastic frame 10 cooperates the locating convex block 27 of lower casing 20, and the hole, location 15 of plastic frame 10 cooperates the locating flange 25 of lower casing 20, and plastic frame 10 and lower casing 20 are closely combined together.Joint draw-in groove 16a, the 16b of plastic frame 10 is joint projection 36a, the 36b that are used for cooperating interface tab 30, and port connections 30 is combined in the plastic frame 10.

Consult Fig. 3, the synoptic diagram of the last shell of expansion board in the prior art, the locating convex block 43a, the 43b that wherein go up shell 40 cooperate detent 13a, the 13b of plastic frame 10, and the location lug 48a, the 48b that go up shell 40 cooperate detent 18a, the 18b of plastic frame 10, simultaneously between last shell 40 and lower casing 20 and dispose required circuit board (not shown), guide groove 49a, the 49b of last shell 40,49c cooperate the corresponding outside side of lower casing 20, and allow shell 40 and lower casing 20 combine closely.

Consult Fig. 4; the synoptic diagram of expansion board in the prior art; wherein expansion board 50 comprises port connections 30 and last shell 40; do not demonstrate the lower casing 20 that is positioned under the shell 40 among the figure; this expansion board 50 provides port connections 30 to do the function that is electrically connected with extraneous, utilizes firm shell that protective effect is provided simultaneously.

The shortcoming of prior art is, plastic frame and lower casing are the array modes with vertical direction, utilize detent to combine with locating convex block, and plastic frame and lower casing are combined, because of only by the strength of detent with locating convex block, so make up strength a little less than.In addition, the thickness that this rectilinear insertion array mode can cause plastic frame is greater than lower casing, makes the part that is higher than lower casing in the plastic frame, in follow-up further combination processing procedure, can be subjected to the external mechanical force influence, even cause plastic frame to break away from lower casing, allow expansion board lose efficacy.

Another shortcoming of prior art is, when the detent of plastic frame is subjected to the extruding of outside horizontal force, can be separated from the location crotch of lower casing, thus plastic frame and lower casing side to combine strength lower, and influence the durability and the fiduciary level of the fine ratio of product and the product of expansion board.

Therefore, need the expansion board of the higher soundness of a kind of tool, to deal with external force extruding possible in the assembling process, to promote the fiduciary level and the fine ratio of product of expansion board.

The utility model content

Fundamental purpose of the present utility model is to provide a kind of expansion board mechanism, in order to the holding circuit plate, forms the expansion board of tool port connections and solid shell.

In order to reach this purpose, this is novel to provide a kind of expansion board mechanism, and in order to coat and to protect a circuit board and a port connections, this expansion board mechanism comprises:

One plastic frame, this plastic frame has one group of positioning guide rail, one group fixedly projection, one group of locating convex block, one group of locating channel, one first group of detent and one second group of detent, wherein this group positioning guide rail and this group fixedly projection be positioned on the dual side-edge, this group locating convex block, this group locating channel and this first and second group detent are positioned on other dual side-edge, use with fixing for the location;

One lower casing, this lower casing has one group of groove guide rail, one group of fixed orifice, one group of location crotch, one group of location bent angle, wherein this group groove guide rail cooperates this group positioning guide rail of this plastic frame, allow this plastic frame slip in this lower casing, up to this group that this group fixed orifice blocks this plastic frame till fixedly projection and this group location crotch insert in this first group of detent of this plastic frame, this group location bent angle is run into this group locating convex block of this plastic frame simultaneously, to prevent that this plastic frame from further sliding, provide fixing and positioning function;

One plastic dam has one group of location guide block, and in order to cooperate this group locating channel of this plastic frame, it is interior and fix to insert this group locating channel, and the fool proof function is provided; And

Shell on one, should go up shell and have one group of location crotch and one group of outer rim guide groove, wherein this group location crotch cooperates this second group of detent of this plastic frame, and insert in this second group of detent, this group outer rim guide groove holds this group groove guide rail of this lower casing simultaneously, and envelopes this group groove guide rail fully;

Wherein this plastic frame, lower casing, plastic dam and last shell coat and protect this circuit board and port connections, form this expansion board mechanism of tool electric interfaces and defencive function.

Described plastic frame is to slip in this lower casing with horizontal direction.

The vertical thickness of described plastic frame is lower than this lower casing, and the dual side-edge outer rim of this plastic frame is coated in this lower casing fully.

The beneficial effects of the utility model are: expansion board of the present utility model mechanism allows the plastic frame outer rim be coated in the lower casing fully, simultaneously with fixing projection slip into fixed orifice carry out accurately fixing with locate, and provide stronger combination strength, make the assembly of this expansion board can not be subjected to external force and get loose, therefore expansion board of the present utility model have higher fine ratio of product, than the advantage of compact enclosure, higher production reliability and preferable combination processing procedure.

Description of drawings

Fig. 1 is the plastic frame of expansion board in the prior art and the synoptic diagram of joint.

Fig. 2 is the synoptic diagram of the lower casing of expansion board in the prior art.

Fig. 3 is the synoptic diagram of the last shell of expansion board in the prior art.

Fig. 4 is the synoptic diagram of expansion board in the prior art.

Fig. 5 is the plastic frame of expansion board among the utility model embodiment and the combination synoptic diagram of lower casing.

Fig. 6 fills the plastic dam of card and the combination synoptic diagram of plastic frame among the utility model expansion embodiment.

Fig. 7 is the combination synoptic diagram of last shell, plastic frame and the lower casing of expansion board among the utility model embodiment.

Embodiment

Below cooperate embodiment of the present utility model is done more detailed description, those of ordinary skill in the art can be implemented after studying this instructions carefully according to this.

Consult Fig. 5, the combination synoptic diagram of the plastic frame of the utility model expansion board and lower casing, wherein positioning guide rail 61a, the 61b of plastic frame 60,61c slip into the direction of arrow as shown in FIG. along 74a, 74b, the 74c groove guide rail of lower casing 70 with horizontal direction.The 62a of plastic frame 60～62c detent cooperates the

location crotch

72a, 72b, 72c of lower casing 70 and blocks and fix, and locating

convex block

65a, 65b, the 65c of plastic frame 60 meet the

location bent angle

75a, 75b, 75c of lower casing 70 and stop further slip simultaneously.In addition, the fixedly projection 67 of plastic frame 60 on side (not demonstrating position another locating convex block on the side over there among the figure) slips in the fixed orifice 77 of lower casing 70 simultaneously, further blocks plastic frame 60.

As a result, plastic frame 60 closely combines together with lower casing 70, simultaneously owing in the whole groove guide rail 74a that is coated on lower casing 70 of

positioning guide rail

61a, 61b, the 61c of

plastic frame

60,74b, 74c, produce stronger combination strength.And the outer rim of lower casing 70 protection plastic frames 60 so plastic frame 60 can not be higher than lower casing 70, is not subjected to the influence of outside horizontal direction power fully.

Consult Fig. 6, the combination synoptic diagram of the plastic dam of the utility model expansion board and plastic frame, wherein location guide block 84a, the 84b of plastic dam 80 are with locating channel 64a, the 64b of vertical direction insertion plastic frame 60, in order to the fool proof defencive function to be provided.

Consult Fig. 7, the combination synoptic diagram of last shell, plastic frame and the lower casing of the utility model expansion board, the

location crotch

93a, 93b, 93c that wherein goes up shell 90 aims at 63a, the 63b of plastic frame 60,63c detent and fastens, to go up simultaneously on the outer rim guide groove 94a of shell 90, groove guide rail 74a that 94b, 94c are stuck in

lower casing

70,74b, the 74c, form combination closely.And, comprise circuit board and port connections between last shell 90 and the lower casing 70 as combination of the prior art, do not repeat them here.

Utilize expansion board of the present utility model mechanism, allow the plastic frame outer rim be coated in the lower casing fully, simultaneously with fixing projection slip into fixed orifice carry out accurately fixing with locate, and provide stronger combination strength, make the assembly of this expansion board can not be subjected to external force and get loose, therefore expansion board of the present utility model have higher fine ratio of product, than the advantage of compact enclosure, higher production reliability and preferable combination processing procedure.

The above only is in order to explain preferred embodiment of the present utility model; be not that attempt is done any pro forma restriction to the utility model according to this; therefore; all have in that identical utility model spirit is following do relevant any modification of the present utility model or change, all must be included in the category of the utility model intention protection.

Claims

1. expansion board mechanism in order to coat and to protect a circuit board and a port connections, is characterized in that this expansion board mechanism comprises:

2. expansion board as claimed in claim 1 mechanism is characterized in that described plastic frame is to slip in this lower casing with horizontal direction.

3. expansion board as claimed in claim 1 mechanism it is characterized in that the vertical thickness of described plastic frame is lower than this lower casing, and the dual side-edge outer rim of this plastic frame is coated on fully in this lower casing.