CN204391409U - The car-mounted device of SD Ka Gai and this SD Ka Gai of use - Google Patents
The car-mounted device of SD Ka Gai and this SD Ka Gai of use Download PDFInfo
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- CN204391409U CN204391409U CN201520118115.0U CN201520118115U CN204391409U CN 204391409 U CN204391409 U CN 204391409U CN 201520118115 U CN201520118115 U CN 201520118115U CN 204391409 U CN204391409 U CN 204391409U
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- gai
- card
- draw
- rib
- groove
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Abstract
The utility model discloses a kind of SD Ka Gai and uses the car-mounted device of this SD Ka Gai, relates to memory card card lid technical field, can solve SD Ka Gai and clamp technical problem that is insecure, that easily deviate from from SD draw-in groove.This SD Ka Gai comprises the card block be made up of hard material and is arranged on card and to block a shot empty calorie lid pedestal in being made up of soft material of bottom, and the installation position of on the periphery of card lid pedestal, peripherally matching with SD draw-in groove is provided with many discontinuous ribs.This SD Ka Gai is used for SD card to fix in SD draw-in groove.
Description
Technical field
The utility model relates to a kind of memory card Ka Gai, particularly relates to the car-mounted device of a kind of SD Ka Gai and this SD Ka Gai of use.
Background technology
Along with the development of science and technology and improving constantly of people's living standard, when consumer chooses automobile, except considering the fail safe of automobile, also more and more higher to the intelligent requirement of automobile, such as, choose the automobile of the car-mounted device (navigator) with memory storage function, so that the retinue event of real time record, storage automobile.
Have in the car-mounted device of memory storage function and SD card (Secure Digital MemoryCard, safe digital card) is set usually to realize the memory function of car-mounted device.In addition, the SD draw-in groove for holding SD card is also set usually on car-mounted device, and configures SD Ka Gai on SD draw-in groove, to fix SD card, to install.
Existing SD Ka Gai has to be arranged on and clamps portion in SD draw-in groove, generally in the outer peripheral edges clamping portion, arranges rib.During installation, the rib that SD card covers is installed in SD draw-in groove, because SD Ka Gai and rib are made up of the material that quality is softer, this make SD Ka Gai making, clamp and routine use time, easily there is rib stress deformation and clamp problem that is insecure, that easily deviate from from SD draw-in groove with SD draw-in groove.
Utility model content
Embodiment of the present utility model provides a kind of SD Ka Gai, can solve SD Ka Gai and clamp technical problem that is insecure, that easily deviate from from SD draw-in groove.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of SD Ka Gai, described SD Ka Gai comprise be made up of hard material card block and be arranged on described card block on be made up of soft material in empty calorie lid pedestal, in the outer peripheral edges of described card lid pedestal, the installation position that described outer peripheral edges match with SD draw-in groove is provided with many discontinuous ribs.
Concrete, the outer peripheral edges profile of described card lid pedestal is arranged to rectangle, and the long limit of described outer peripheral edges profile is provided with many described discontinuous ribs.
In order to make card block realize seamless link with card lid pedestal, the described card can be made up of hard material at the described card lid pedestal upper be made up of soft material is blocked a shot, and pour into an integrated entity both making formula structure.
Wherein, described soft material is synthetic rubber, and described hard material is engineering plastic alloy, and the fusing point of described soft material is higher than the fusing point of described hard material.
Form clamp at described card block towards on the face of described card lid pedestal, near the side of described card lid base internal wall when pouring into a mould described card block, the position of described clamp is corresponding with the discontinuity position of described discontinuous rib.
SD Ka Gai snaps fitted to after in SD draw-in groove, the stressed rear Inward deflection in the middle part in order to avoid discontinuous rib, is provided with clamp at described card block towards on the face of described card lid pedestal, near the side of described card lid base internal wall; When described card block is arranged on described card lid pedestal, the position of described clamp is corresponding with the discontinuity position of described discontinuous rib.
In addition, the counter-bending resistance of single described discontinuous rib middle part is F=(4fW)/L; Wherein, f is the coefficient of friction of described discontinuous rib, and W is the bending sections coefficient of described discontinuous rib;
L is the theoretical length value of single described discontinuous rib opposing position, intermediate portion distortion, then the actual (tube) length angle value L'≤L of single described discontinuous rib, thus makes the counter-bending resistance at discontinuous rib position therebetween be not less than actual thrust of bearing.
More smooth and easy during in order to ensure SD Ka Gai insertion or pull out SD draw-in groove, the cross sectional shape of described discontinuous rib is set to semicircle, and now the bending sections coefficient of described discontinuous rib is W=π R
3/ 8, wherein, R is the radius of described discontinuous rib.
The SD Ka Gai that the utility model embodiment provides is primarily of card lid pedestal and card block composition.Wherein, the card block be made up of hard material is for facilitating user to pick and place and adapting with the housing texture of car-mounted device, the card lid pedestal be made up of soft material clamps for coordinating with SD draw-in groove, discontinuous rib in card lid pedestal outer peripheral edges is used for the installation position tight clamping fit with SD draw-in groove, when SD Ka Gai is snapped fitted to SD draw-in groove, discontinuous rib is by the installation position of tight clamping fit at SD draw-in groove.In the manufacturing process of SD Ka Gai or in the installation process of SD Ka Gai and SD draw-in groove, owing to being heated or pressurized, there is the trend of Inward deflection in the hollow part of continuous print rib oriented card lid pedestal, and the gap between discontinuous rib can provide rib distortion along its length (stretching, extension) space, thus reduce or avoid discontinuous rib to the probability of the hollow part generation Inward deflection of card lid pedestal, SD Ka Gai and SD draw-in groove are firmly fastened, avoid SD Ka Gai to deviate from from SD draw-in groove.
The utility model embodiment still provides a kind of car-mounted device, comprises car-mounted device body, and described car-mounted device body is provided with SD draw-in groove, and described SD draw-in groove is configured with above-mentioned SD Ka Gai.
When SD card is inserted into after in SD draw-in groove, SD Ka Gai is installed in SD draw-in groove, thus SD card is firmly stuck in SD draw-in groove.Because this car-mounted device employs above-mentioned SD Ka Gai, there are all advantages of SD Ka Gai, therefore do not repeat them here.
Accompanying drawing explanation
Fig. 1 is the perspective view of the utility model embodiment SD Ka Gai;
Fig. 2 is for being arranged on the cross sectional representation under SD draw-in groove state by the SD Ka Gai shown in Fig. 1;
Fig. 3 is the perspective view of card lid pedestal in the card of SD shown in Fig. 1 lid;
Fig. 4 is for blocking the perspective view of block in the card of SD shown in Fig. 1 lid.
Description of reference numerals:
1-card lid pedestal, the discontinuous rib of 2-, 3-card is blocked a shot, 4-clamp, 5-SD draw-in groove.
Embodiment
Below in conjunction with accompanying drawing to the SD Ka Gai described in the utility model embodiment and use the car-mounted device of this SD Ka Gai to be described in detail.
Embodiment one
The present embodiment is a kind of SD Ka Gai, as shown in Figure 1-Figure 3, SD Ka Gai comprises the card block 3 be made up of hard material and is arranged on empty calorie lid pedestal 1 in being made up of soft material on described card block 3, and in the outer peripheral edges of card lid pedestal 1, installation position that circumferentially edge matches with SD draw-in groove 5 is provided with many discontinuous ribs 2.
The SD Ka Gai for car-mounted device that the present embodiment provides forms primarily of card lid pedestal 1 and card block 3.Wherein, the card block 3 be made up of hard material is for facilitating user to pick and place and adapting with the housing texture of car-mounted device, the card lid pedestal 1 be made up of soft material clamps for coordinating with SD draw-in groove 5, discontinuous rib 2 in card lid pedestal 1 outer peripheral edges is for the installation position tight clamping fit with SD draw-in groove 5, when SD Ka Gai is snapped fitted to SD draw-in groove 5, discontinuous rib 2 is by the installation position of tight clamping fit at SD draw-in groove.In the manufacturing process of SD Ka Gai or in the installation process of SD Ka Gai and SD draw-in groove 5, owing to being heated or pressurized, there is the trend of Inward deflection in the hollow part of continuous print rib oriented card lid pedestal 1, and the gap between discontinuous rib 2 can provide distortion (stretching, extension) space along its length, thus reduce or avoid discontinuous rib 2 to the probability of the hollow bulb generation Inward deflection of card lid pedestal 1, SD Ka Gai and SD draw-in groove are firmly fastened, avoid SD Ka Gai to deviate from from SD draw-in groove.
Particularly, the outer peripheral edges profile of the card lid pedestal 1 in the present embodiment is rectangle, and the long limit of outer peripheral edges profile is provided with above-mentioned many discontinuous ribs 2.As shown in Figure 1, on the long limit of the outer peripheral edges profile that can observe, be provided with two discontinuous ribs 2.Certainly, the outer peripheral edges profile of card lid pedestal 1 can also be other shape, such as, circular, oval etc.
In the present embodiment, SD card lid can be the card block 3 be made up of hard material at card lid pedestal 1 upper be made up of soft material, and pour into an integrated entity both making formula structure, realizes seamless link, strengthens the bonding strength of card lid pedestal 1 and card block 3.
Wherein, card lid pedestal 1 can be made up of the synthetic rubber that material is softer, card block 3 can be made up of the engineering plastic alloy that material is harder, such as, PC+ABS (Polycarbonate+AcrylonitrileButadiene Styrene, the copolymer of Merlon and polyacrylonitrile or mixture).In addition, the fusing point of synthetic rubber material is higher than the fusing point of engineering plastic alloy, is beneficial to card block 3 to be cast on card lid pedestal 1, and the second pouring being namely beneficial to SD Ka Gai is shaping.
When using card lid pedestal 1 as matrix, card lid pedestal 1 upper card block a shot 3 time, in moulding by casting process, the pouring temperature of card block 3 will to card lid pedestal 1 transferring heat, this heat can make card lid pedestal 1 produce larger thermal stress, because in prior art, the outer peripheral edges of card lid pedestal 1 are provided with long rib, therefore these outer peripheral edges are different from the thickness of other position, thus are heated and easily deform.Because the counter-bending resistance of long rib middle part is minimum, therefore long rib after being heated therebetween position distortion maximum, easily make the middle part of long rib to the hollow bulb generation Inward deflection phenomenon of card lid pedestal 1, cause this place long rib can not with the installation position clamping of SD draw-in groove 5, make SD Ka Gai deviate from SD draw-in groove 5 time serious.And when long rib being broken into much shorter discontinuous ribs 2, the non-deformability of single discontinuous rib 2 middle part can be strengthened, even if thus make it also not easily Inward deflection occur under thermal stress effect.
Due to the structure of discontinuous rib 2, except card lid pedestal 1 is less likely to occur except distortion in SD card lid manufacturing process, be also less likely to occur distortion at the card lid pedestal 1 in use procedure that clamps of SD Ka Gai.When SD Ka Gai is snapped fitted in SD draw-in groove 5, the installation position of SD draw-in groove 5 will apply thrust to long rib of the prior art, when this thrust is larger, the middle part of long rib under the effect of this thrust likely to card lid pedestal 1 hollow bulb generation Inward deflection, thus make the installation position of long rib and SD draw-in groove can not clamping, make SD Ka Gai come off out in SD draw-in groove 5 time serious.And when long rib being broken into much shorter discontinuous ribs 2, the non-deformability of single discontinuous rib 2 middle part can be strengthened, even if thus make it also not easily Inward deflection occur under extruding force effect.
In the present embodiment, in order to the thermal stress balanced in SD card lid manufacturing process or the thrust clamped in use procedure, Inward deflection is there is to avoid the middle part of discontinuous rib 2 stressed, as shown in Figure 4, on the face of card block 3 towards card lid pedestal 1, near the side of card lid pedestal 1 inwall, form clamp 4 during cast card block 3, the position of clamp 4 is corresponding with the discontinuity position of discontinuous rib 2.Thus make clamp 4 at this position support card lid pedestal 1, clamp 4 is made to apply the reaction force contrary with above-mentioned thermal stress or thrust direction to card lid pedestal 1, and then avoid the middle part of discontinuous rib 2 to the hollow bulb generation Inward deflection of card lid pedestal 1, make discontinuous rib 2 can more firmly with the installation position clamping of SD draw-in groove 5.
In other embodiment of the present utility model, card lid pedestal 1 and card block 3 may not be moulding by casting, but both are made into independently assembled formation again after part.Now, also clamp 4 can be provided with on the face of card block 3 towards card lid pedestal 1, near the side of card lid pedestal 1 inwall, afterwards, when card block 3 is inserted on card lid pedestal 1, the position of clamp 4 is corresponding with the discontinuity position of discontinuous rib 2, applies the reaction force contrary with above-mentioned thermal stress or thrust direction to give card lid pedestal 1.
In the present embodiment, the long limit of the outer peripheral edges of card lid pedestal 1 is provided with two discontinuous ribs 2, wherein, the counter-bending resistance of single discontinuous rib 2 middle part is F=(4fW)/L.Wherein, f is the coefficient of friction of discontinuous rib 2, and W is the bending sections coefficient of discontinuous rib 2, and L is the theoretical length value that single discontinuous rib 2 resists the distortion of position, intermediate portion.Coefficient of friction f is relevant with material, therefore coefficient of friction f is definite value; Usually, the coefficient of friction of elastomeric material is 0.6 ~ 0.9.
From above-mentioned counter-bending resistance formula, counter-bending resistance F and its theoretical length L of discontinuous rib 2 middle part are inversely proportional to.Discontinuous rib 2 is longer, and the counter-bending resistance of position, intermediate portion is less, is more easily out of shape; Otherwise discontinuous rib 2 is shorter, the counter-bending resistance of position, intermediate portion is larger, and bending resistance is stronger, is more not easy distortion.It can thus be appreciated that, in order to avoid discontinuous rib 2 Inward deflection occurs position therebetween, discontinuous rib 2 is not easily long, its physical length should meet L'≤L, actual thermal stress of bearing or thrust is not less than to make the counter-bending resistance F at discontinuous rib 2 position therebetween, thus avoid the generation of the stressed rear Inward deflection phenomenon of discontinuous rib 2, SD Ka Gai is firmly installed in SD draw-in groove 5 all the time.
Wherein, single discontinuous rib 2 resists the theoretical length value L of position, intermediate portion distortion, is to calculate when the counter-bending resistance of single discontinuous rib 2 middle part just equals thermal stress that its reality bears or thrust.
Usually, bending sections coefficient W is relevant with the cross sectional shape size of discontinuous rib 2, when the cross sectional shape of discontinuous rib 2 is circular, and its bending sections coefficient W=π R
3/ 4, wherein, R is the radius of discontinuous rib 2, and from this bending sections coefficient formula, bending sections coefficient W is only relevant with the radius R of discontinuous rib 2.
In the present embodiment, more smooth and easy when snapping fitted to SD draw-in groove 5 to make SD Ka Gai, when the cross sectional shape of discontinuous rib 2 is arranged to semicircle, the outer surface transition of the discontinuous rib 2 of semicircular structure is mild, is conducive to SD Ka Gai and inserts/pull out SD draw-in groove 5.Wherein, the bending sections coefficient of semicircle discontinuous rib 2 is also only relevant with its radius R.And now, its bending sections coefficient W=π R
3/ 8.
With the discontinuous rib of radius R=0.5mm, friction coefficient f=0.9 for example.During actual measurement, the pressing-in force mounted cover by SD card into SD draw-in groove 5 is 13.5N, in order to SD Ka Gai is snapped fitted in SD draw-in groove 5, when only having the counter-bending resistance F >=13.5N when discontinuous rib 2 middle part, just can avoid the middle part of discontinuous rib 2 that Inward deflection occurs.According to above-mentioned counter-bending resistance calculation formulae, obtain the theoretical length value L=13.1mm of single discontinuous rib 2, therefore the physical length L ' of discontinuous rib 2 is less than 13.1mm, when the length of rib is more than 13.1mm, equal or not etc. many discontinuous ribs 2 need be broken into.Such as, when needing to arrange total length and being about the rib of 21mm, the middle part of this rib can be broken into the two discontinuous ribs 2 being about 13mm and 8mm.
It should be noted that, when long rib is broken into many discontinuous ribs 2, not only can strengthen non-deformability when SD Ka Gai snaps fitted to SD draw-in groove 5, make the clamping of SD card lid more firm, the non-deformability in SD card lid second pouring forming process can also be strengthened.
It can thus be appreciated that, discontinuous rib 2 in the present embodiment in SD card lid outer peripheral edges can ensure to be greater than zero all the time with the clamping embedded quantity of SD draw-in groove installation position, that is, make the clamping firm in SD draw-in groove all the time of discontinuous rib 2, ensure that SD card lid can not be deviate from SD draw-in groove.
Embodiment two
The present embodiment is a kind of car-mounted device, and this car-mounted device comprises car-mounted device body, and car-mounted device body is provided with SD draw-in groove, and SD draw-in groove is configured with the SD Ka Gai described in above-described embodiment one.
When SD card is inserted into after in SD draw-in groove, SD Ka Gai is installed in SD draw-in groove, thus SD card is firmly stuck in SD draw-in groove.Because this car-mounted device employs above-mentioned SD Ka Gai, there are all advantages of SD Ka Gai, therefore do not repeat them here
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
The above; be only embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection range of the present utility model.Therefore, protection range of the present utility model should described be as the criterion with the protection range of claim.
Claims (9)
1. a SD Ka Gai, it is characterized in that, described SD Ka Gai comprise be made up of hard material card block and be arranged on described card block on be made up of soft material in empty calorie lid pedestal, in the outer peripheral edges of described card lid pedestal, the installation position that described outer peripheral edges match with SD draw-in groove is provided with many discontinuous ribs.
2. SD Ka Gai according to claim 1, is characterized in that, the outer peripheral edges profile of described card lid pedestal is rectangle, and the long limit of described outer peripheral edges profile is provided with many described discontinuous ribs.
3. SD Ka Gai according to claim 1 and 2, is characterized in that, the described card be made up of hard material at the described card lid pedestal upper be made up of soft material is blocked a shot.
4. SD Ka Gai according to claim 3, is characterized in that, described soft material is synthetic rubber, and described hard material is engineering plastic alloy, and the fusing point of described soft material is higher than the fusing point of described hard material.
5. SD Ka Gai according to claim 3, it is characterized in that, form clamp at described card block towards on the face of described card lid pedestal, near the side of described card lid base internal wall when pouring into a mould described card block, the position of described clamp is corresponding with the discontinuity position of described discontinuous rib.
6. SD Ka Gai according to claim 1 and 2, is characterized in that, is provided with clamp at described card block towards on the face of described card lid pedestal, near the side of described card lid base internal wall;
When described card block is arranged on described card lid pedestal, the position of described clamp is corresponding with the discontinuity position of described discontinuous rib.
7. SD Ka Gai according to claim 1 and 2, is characterized in that, the counter-bending resistance of single described discontinuous rib middle part is F=(4fW)/L; Wherein, f is the coefficient of friction of described discontinuous rib, and W is the bending sections coefficient of described discontinuous rib;
L is the theoretical length value of single described discontinuous rib opposing position, intermediate portion distortion, then the actual (tube) length angle value L'≤L of single described discontinuous rib.
8. SD Ka Gai according to claim 7, is characterized in that, the cross sectional shape of described discontinuous rib is semicircle, and now the bending sections coefficient of described discontinuous rib is W=π R
3/ 8, wherein R is the radius of described discontinuous rib.
9. a car-mounted device, comprises car-mounted device body, and described car-mounted device body is provided with SD draw-in groove, it is characterized in that, described SD draw-in groove is configured with the SD Ka Gai as described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118115.0U CN204391409U (en) | 2015-02-27 | 2015-02-27 | The car-mounted device of SD Ka Gai and this SD Ka Gai of use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520118115.0U CN204391409U (en) | 2015-02-27 | 2015-02-27 | The car-mounted device of SD Ka Gai and this SD Ka Gai of use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204391409U true CN204391409U (en) | 2015-06-10 |
Family
ID=53364098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520118115.0U Expired - Fee Related CN204391409U (en) | 2015-02-27 | 2015-02-27 | The car-mounted device of SD Ka Gai and this SD Ka Gai of use |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204391409U (en) |
-
2015
- 2015-02-27 CN CN201520118115.0U patent/CN204391409U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150610 Termination date: 20200227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |