CN101334850A - Function expansion board - Google Patents

Abstract

The invention discloses a function expansion card which comprises a motherboard, a connecting seat, a shell body and a staddle, wherein, a plurality of chips are configured on one surface of the motherboard; the connecting seat is arranged on the surface of the motherboard and positioned at the edge of the motherboard; the shell is arranged on the motherboard, covers the chips and exposes one joint face of the connecting seat; the staddle positioned over the connecting seat is movably arranged on the shell body and can access the inside and the outside of the shell body; the direction in which the staddle accesses the inside and the outside of the shell body is parallel to the direction of the normal line of the joint face.

Description

Function expansion board

Technical field

The invention relates to a kind of function expansion board, and particularly relevant for a kind of function expansion board that is applicable in the electronic installation.

Background technology

The rapid technological improvement of portable electronic device in recent years, except volume and the continuous reduction of weight, function is constantly integrated especially and is expanded.Yet in the limited space of electronic installation, can't completely contain all functions, and can't provide the electronic installation that customizes function according to user's demand.Therefore, many electronic installations with expansion slot appear on the market, make the user can insert the expansion board of difference in functionality according to demand separately, to increase the function that does not possess in original electronic installation, for example newly-increased Digital Television playing function, wireless communication function or merely increase the memory storage capacity of electronic installation.Industry develops the expansion board specification that multiple different size at present, and for example Secure Digital (SD) card, PC card or Compact Flash (CF) block or the like, so that be applied in the different portable electronic devices.

Wherein, the CF jig has advantages such as high data transfer rate and high capacity, and except application as the flash memory medium, also comprise various application such as modem, network interface, wireless network communication, bluetooth adapter and graphic process unit, make the CF card be widely used in the various portable electronic device.Yet complicated along with application function has more and more many chips and circuit must be arranged in the inner space that CF fastens, and significantly increases the design difficulty of the CF card of using new function.For example in the CF card as the wireless communication data machine, generally speaking the chip of a plurality of difference in functionalitys must be set on the mainboard, and the chip card that will be used to connect the mobile network is arranged at mainboard, the Connection Block with the CF card also is arranged on the mainboard simultaneously.These elements are arranged on the mainboard simultaneously, have significantly limited the utilization factor of area on the mainboard, have further more limited the elasticity of CF card function development.

Summary of the invention

In view of this, the purpose of this invention is to provide a kind of function expansion board, it utilizes the mode that bolster is arranged at the Connection Block top, save bolster in the inner occupation space of function expansion board, to increase the area of function expansion board internal circuit layout, further effectively utilize the function expansion board volume inside.

According to the present invention, a kind of function expansion board is proposed, comprise a mainboard, a connecting seat, a housing and a bolster.One surface configuration of mainboard has a plurality of chips.Connection Block also is arranged on this surface, and is positioned at the edge of mainboard.Housing is arranged on the mainboard, and hides this a little chips, more exposes a joint face of Connection Block.Bolster is arranged at housing in a movable manner, its can pass in and out housing inside and outside, and be positioned at the top of Connection Block.The inside and outside direction of bolster turnover housing is parallel to the normal direction of joint face.

Description of drawings

For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing the specific embodiment of the present invention is elaborated, wherein:

Fig. 1 illustrates the three-dimensional view according to the function expansion board of preferred embodiment of the present invention;

Fig. 2 illustrates the decomposing schematic representation of the function expansion board of Fig. 1; And

Fig. 3 illustrates the synoptic diagram of the function expansion board with drain pan.

Embodiment

Preferred embodiment is below proposed as detailed description of the present invention.This embodiment is in order to as example explanation, scope that can't limit desire protection of the present invention.In addition, the diagram among the embodiment is omitted unnecessary element, with clear demonstration technical characterstic of the present invention.

Please be simultaneously with reference to Fig. 1 and Fig. 2, Fig. 1 illustrates the three-dimensional view according to the function expansion board of preferred embodiment of the present invention; Fig. 2 illustrates the decomposing schematic representation of the function expansion board of Fig. 1.Function expansion board 100 comprises a mainboard 20, a connecting seat 40, a housing 60 and a bolster 80.One surface 22 of mainboard 20 disposes a plurality of chips 10.Connection Block 40 is arranged on the surface 22, and is positioned at the edge of mainboard 20.Housing 60 is arranged on the mainboard 20, and hides this a little chips 10.In addition, housing 60 exposes a joint face 42 of Connection Block 40.Bolster 80 is arranged at housing 60 in a movable manner, and can pass in and out housing 60 inside and outside.Bolster 80 is positioned at the top of Connection Block 40.Bolster 80 turnover housings 60 inside and outside moving direction D are parallel to the normal direction F of joint face 42.Thus, bolster 80 is stacked and placed on Connection Block 40 tops, has reduced bolster 80 shared area on mainboard 20, not increasing under the apparent size condition of function expansion board, can effectively utilize the circuit layout area on the mainboard 20 more.

Further, function expansion board 100 also comprises contact structures 50 and a flat board 70.Housing 60 has a plurality of contact holes 64, and comprises a metal support 62.Bolster 80 has a storage tank 82.Storage tank 82 is in order to a ccontaining Subscriber Identity Module (Subscriber Identity Module card, SIM card) 90, and storage tank 82 preferably has the shape corresponding to Subscriber Identity Module 90, guarantees that Subscriber Identity Module 90 is placed in the storage tank 82 according to correct direction.Contact structures 50 are arranged on the surface 22 of mainboard 20, and when bolster 80 was positioned at housing 60, Subscriber Identity Module 90 was corresponding to the position of contact structures 50.At this moment, contact structures 50 are to utilize a plurality of contact flat spring 52 contact Subscriber Identity Modules 90, in order to electrically connect mainboard 20 and Subscriber Identity Module 90.Metal support 62 and housing 60 are to utilize the mode that embeds ejaculation (insert molding) to form, housing 60 is the metal support 62 of tight covered section when being shaped, make metal support 62 firmly be embedded in the housing 60, and make metal support 62 have enough support strengths.In addition, the mode of this kind embedding ejaculation also can effectively be reduced the thickness of housing 60 and metal support 62 integral body.Metal support 62 is in order to support bolster 80 and Subscriber Identity Module 90, and when bolster 80 was positioned at housing 60, metal support 62 was in fact corresponding to the position of Subscriber Identity Module 90.Support bolster 80 and Subscriber Identity Module 90 by metal support 62, can reduce by 60 required support strengths of bolster 80 and housing.Thus, bolster 80 only needs be connected in housing 60 by the design of simple slip and location structure, has reduced the required height of bolster 80.In the present embodiment, bolster 80 only need have the height that slightly equals Subscriber Identity Module 90 and get final product, and therefore under the condition that does not influence function expansion board 100 whole heights, bolster 80 can be stacked at Connection Block 40 tops.

Moreover dull and stereotyped 70 are arranged on the housing 60, and these a little chips 10 utilize corresponding connection pad 72 respectively, are electrically connected at dull and stereotyped 70 via contact hole 64.Metal support 62 has a pin 62a, and this pin 62a is the electrically contact dull and stereotyped 70 of contact hole 64 by correspondence.In the present embodiment, dull and stereotyped 70 preferably is a metal sheet, as the ground plate of this function expansion board 100, in order to these a little chips 10 and metal support 62 ground connection.In addition, metal support 62 is preferably and is arranged at bolster 80 belows, because metal support 62 is via dull and stereotyped 70 ground connection, makes metal support can bring into play the effect of shielding Subscriber Identity Module 90.When function expansion board 100 work, (Electro-Magnetic Interference EMI), has guaranteed the running stability of Subscriber Identity Module 90 to the electromagnetic interference that metal support 62 shielding mainboards 20 or this a little chips 10 are produced.

In addition, function expansion board 100 also can comprise a drain pan 68 that cooperates with housing 60.Please refer to Fig. 3, it illustrates the synoptic diagram of the function expansion board with drain pan.In the function expansion board 100 ', mainboard 20, these a little chips 10, contact structures 50 and Connection Block 40 are arranged between drain pan 68 and the housing 60 in the formed accommodation space, so as to protection mainboard 20 and be arranged at this a little elements on its surface.These a little chips 10 and metal support 62 (being illustrated among Fig. 2) can not come ground connection by the flat board that is arranged at drain pan 68 bottom surfaces (being shown among the figure) yet except that the design of above-mentioned utilization flat board 70 as ground plate.

In present embodiment, function expansion board 100 is that (Modulator-Demodulator MODEM), for example is the specification that adopts Compact Flash Type II for a modulator-demodular unit.It is to be applied in the electronic installation, and electronic installation is to utilize function expansion board 100 to connect the data transmission of carrying out wireless telecommunications behind the mobile communication network.Function expansion board 90 is to be electrically connected at electronic installation via Connection Block 40, to carry out the transmission of data.This electronic installation for example be the individual with oneself digital assistants (PersonalDigital Assistant, PDA), palmtop computer (palm-sized computer), notebook computer (notebook) or intelligent mobile phone (smart phone).

Above-mentioned function expansion board according to preferred embodiment of the present invention, bolster is arranged at housing in a movable manner, and can pass in and out housing inside and outside.Bolster is positioned at the Connection Block top, and the direction of bolster turnover housing is parallel to the normal direction of the joint face of Connection Block.Because bolster is stacked and placed on Connection Block top, shared area in the time of can saving bolster and Connection Block and together be arranged on the mainboard, but further increased the area of design circuit layout on the mainboard, further effectively utilize the function expansion board volume inside.In addition, utilize dull and stereotyped mode as ground plate, can be directly with a plurality of chips and metal support ground connection, need not increase extra earth element is set, can effectively save cost, and can effectively reduce the noise that produces when function expansion board operates, improve the quality of product.Moreover, by metal support shielding Subscriber Identity Module, can promote the running stability of Subscriber Identity Module, further improved reliability of products.

Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little modification and perfect, so protection scope of the present invention is when with being as the criterion that claims were defined.

Claims (9)

1. a function expansion board is characterized in that, comprising:

One mainboard, a surface configuration of this mainboard has several chips;

A connecting seat is arranged on this surface, and is positioned at the edge of this mainboard;

One housing is arranged on this mainboard, and hides those chips, and this housing exposes a joint face of this Connection Block; And

One bolster is arranged at this housing in a movable manner, and can pass in and out this housing inside and outside, this bolster is the top that is positioned at this Connection Block;

Wherein, this bolster passes in and out the normal direction that the inside and outside direction of this housing is parallel to this joint face.

2. function expansion board as claimed in claim 1 is characterized in that this bolster has a storage tank, and in order to a ccontaining Subscriber Identity Module, this expansion board also comprises:

One contact structures are arranged on this surface, and when this bolster was positioned at this housing, this Subscriber Identity Module was in fact corresponding to the position of these contact structures.

3. function expansion board as claimed in claim 2 is characterized in that, when this bolster was positioned at this housing, these contact structures contacted this Subscriber Identity Module, in order to electrically connect this mainboard and this Subscriber Identity Module.

4. function expansion board as claimed in claim 2 is characterized in that, this housing also comprises:

One metal support, in order to support this bolster and this Subscriber Identity Module, when this bolster was positioned at this housing, this metal support came down to corresponding to this Subscriber Identity Module.

5. function expansion board as claimed in claim 4 is characterized in that, this housing and this metal support are to utilize the mode that embeds ejaculation to form.

6. function expansion board as claimed in claim 4 is characterized in that this housing has several contact holes, and this expansion board also comprises:

One flat board is arranged on this housing, and those chips and this metal support are to be electrically connected at this flat board via those contact holes respectively.

7. function expansion board as claimed in claim 6 is characterized in that, this flat board is to be a metal sheet, in order to those chips and this metal support ground connection.

8. function expansion board as claimed in claim 1 is characterized in that, this function expansion board is to be electrically connected at an electronic installation via this Connection Block.

9. function expansion board as claimed in claim 1 is characterized in that, this expansion board is to be a modulator-demodular unit.

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