Card holds in palm structural design and terminal equipment
阅读说明：本技术 一种卡托结构设计和终端设备 (Card holds in palm structural design and terminal equipment ) 是由 李童杰 付蓓 张旭东 于 2019-03-13 设计创作，主要内容包括：本申请提供了一种卡托结构设计和终端设备,通过合理设置卡托结构,该卡托结构可以包括不连续的金属结构,例如由金属结构和非金属结构相间的组合形式,可以改变SD卡到天线的耦合路径,降低金属结构对电磁波的干扰,从而降低辐射；此外,可以根据SD卡工作的不同频段,选择辐射最低的卡托结构。该卡托结构可以适应不同尺寸和大小的终端设备,避免卡托结构受到终端设备尺寸和大小的限值制约。(The application provides a card support structure design and terminal equipment, wherein the card support structure is reasonably arranged, and can comprise a discontinuous metal structure, for example, a combination form of the metal structure and a nonmetal structure at intervals can change a coupling path from an SD card to an antenna, reduce the interference of the metal structure to electromagnetic waves and further reduce radiation; in addition, the card support structure with the lowest radiation can be selected according to different working frequency bands of the SD card. The card support structure can adapt to terminal equipment with different sizes and dimensions, and the restriction of the card support structure on the size and dimension limit values of the terminal equipment is avoided.)
1. The utility model provides a card holds in palm structure which characterized in that, card holds in palm the structure and includes:
a card holder body;
the clamping support cap is a protruding structure positioned at one end of the clamping support body;
the card holds in the palm the frame groove, the card holds in the palm the frame groove and is used for installing the data card, the card holds in the palm the frame groove set up in on the card holds in the palm the body, the card holds in the palm the frame groove and includes first region and second area, first region is metal construction, the second area is non-metal construction.
2. The card tray structure of claim 1, wherein the first area comprises a plurality of sub-areas, the second area comprises a plurality of sub-areas, and the plurality of sub-areas of the first area and the plurality of sub-areas of the second area are spaced apart.
3. The card support structure of claim 1 or 2, wherein the portion of the card support frame groove parallel or approximately parallel to the card support cap and having the smallest distance from the card support cap is a non-metal structure.
4. The card tray structure according to any one of claims 1 to 3, wherein the card tray body is of a metal structure or a non-metal structure.
5. The card holder structure according to any one of claims 1 to 4, wherein the card holder cap is of a metal structure or a non-metal structure.
6. The card tray structure according to any one of claims 1 to 5, wherein the data card comprises a secure digital memory (SD) card or a Universal Integrated Circuit Card (UICC) card.
7. A mobile terminal, characterized in that the mobile terminal comprises:
the card support structure comprises a shell, wherein a slot is formed in one side of the shell, the card support structure as claimed in any one of claims 1 to 6 is installed at the slot, the card support body is installed in the slot, and the card support cap is arranged at a notch of the slot and is on the same smooth surface with one side of the shell.
Technical Field
The present application relates to the field of terminal devices, and more particularly, to a card holder structure design for installing a data card and a terminal device.
Background
With the development of terminal equipment intellectualization, terminal equipment occupies an increasingly important position in daily life. Specifically, the terminal devices are getting smaller, but the operating frequency is getting higher. When the size of the terminal device is small, the secure digital memory card (SD) is closer to the antenna, and the SD card and the related signals can be coupled and finally radiated through the antenna, which results in higher radiation.
In addition, if the SD card is too close to the antenna, the antenna may interfere with the SD card when the user uses the terminal device to talk. Especially, under the condition of poor signals, the terminal equipment can increase power, and the problems of low SD card transmission speed, SD incapability of identifying or SD card hardware damage can be caused.
Disclosure of Invention
The application provides a card holds in palm structural design and terminal equipment for installing data card reduces the radiation of SD card during operation, SD card's noise immunity when improving the antenna radiation.
In a first aspect, a card support structure is provided, which includes: a card holder body; the clamping support cap is a protruding structure arranged at one end of the clamping support body; the card holds in the palm the frame groove, the card holds in the palm the frame groove and is used for installing the data card, and this card holds in the palm the frame groove and sets up on this card holds in the palm the body, and this card holds in the palm the frame groove and includes first region and second area, and this first region is metal construction, and this second area is non-metal construction.
Illustratively, the card support frame slot has a discontinuous metal structure.
It should be understood that, the application does not limit the position and length of the frame with the discontinuous metal structure in the card support frame groove, and the combination of the metal structure and the nonmetal structure in the structure of the card support frame groove is ensured.
With reference to the first aspect, in a possible implementation manner, the first region includes a plurality of sub-regions, the second region includes a plurality of sub-regions, and the plurality of sub-regions of the first region and the plurality of sub-regions of the second region are arranged at intervals.
In other words, the card support frame groove area may include a plurality of metal structures and a plurality of non-metal structures, and the plurality of metal structures and the plurality of non-metal structures may be arranged at intervals.
With reference to the first aspect and the foregoing manner, in a possible implementation manner, a portion of the card support frame groove, which is parallel or approximately parallel to the card support cap and has the smallest distance from the card support cap, is of a non-metal structure.
Illustratively, as the
With reference to the first aspect and the foregoing manner, in a possible implementation manner, the card holder body is of a metal structure or a non-metal structure.
With reference to the first aspect and the foregoing manner, in one possible implementation manner, the card support cap is of a metal structure or a non-metal structure.
With reference to the first aspect and the foregoing manner, in a possible implementation manner, the data card includes a secure digital memory SD card or a universal integrated circuit card UICC card.
It should be understood that when the card-holding cap is a non-metal structure, the interference of the metal structure to electromagnetic waves can be reduced, thereby reducing radiation.
It is to be understood that the types of metals and non-metals are not limited in this application. For example, the metal may be copper or the like, and the nonmetal may be plastic or the like.
It should also be understood that, the shape and size of the card support structure are not limited in the present application, but only by changing the structure of the card support frame slot area in the card support structure, the size and size of the card support structure (including the card support body) can be adapted to terminal devices of different sizes and sizes, and the purpose of reducing radiation is achieved without changing the antenna structure or changing the distance between the SD card and the antenna.
Or, different card support structures are provided for different frequency ranges to ensure that the radiation value RE obtained through testing is the lowest when the SD operates in the frequency range. For example, when the SD card operates in a range from 744MHz to 1GHz, the card holder structure illustrated in fig. 3 (b) provided in the embodiment of the present application may be used to minimize RE and minimize interference to electromagnetic waves, which is not limited in the present application.
Through above-mentioned technical scheme, hold in the palm the material of structure through reasonable setting card, this card holds in the palm the structure and can include discontinuous metal construction, for example by the alternate integrated form of metal construction and non-metal construction, this card holds in the palm the structure and can change the coupling path of SD card to the antenna, reduces metal construction to electromagnetic wave's interference to reduce the radiation. Meanwhile, the card support structure can adapt to terminal equipment with different sizes and dimensions, and the restriction of the card support structure on the size and dimension limit values of the terminal equipment is avoided.
Specifically, the card-holding frame slot in the embodiment of the present application may include a
For example, as shown in fig. 3 (a), the card-
Alternatively, as shown in fig. 3 (b), the card-
Alternatively, as shown in fig. 3 (d), the card-receiving
Alternatively, as shown in fig. 3 (e), the card-receiving
It should be understood that the above list is only possible implementations. The position and the length of the frame with the discontinuous metal structure in the card
In a second aspect, a mobile terminal is provided, which includes: the card support structure comprises a shell, wherein a slot is formed in one side of the shell, any card support structure in the first aspect is arranged in the slot, a card support body is arranged in the slot, and a card support cap is arranged in a notch of the slot and is on the same smooth surface with one side of the shell.
Drawings
Fig. 1 is a schematic diagram of an example of a terminal device mounting card holder structure provided in the present application.
Fig. 2 is a schematic diagram of an example of a card holder structure provided in the present application.
Fig. 3 is a schematic diagram of a plurality of possible card holder structure designs provided in the embodiment of the present application.
Fig. 4 is a schematic diagram of another possible design of a card holder structure provided in the embodiment of the present application.
Fig. 5 to 7 are schematic diagrams of RE test results provided in the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
The card support structure provided by the embodiment of the application can be applied to terminal equipment, for example, the terminal equipment can be a mobile phone, a Pad and other equipment capable of installing an SD card, and the application does not limit the structure.
Fig. 1 is a schematic diagram of an example of a terminal device mounting card holder structure provided in the present application. As shown in fig. 1, the middle frame 10 is a structural member of the terminal device for fixing other components of the terminal device, and the antennas of the terminal device are distributed on the middle frame 10 for receiving and transmitting signals during communication of the terminal device. The card holder structure 20 is mounted in a slot of the terminal device middle frame 10, and the
Fig. 2 is a schematic diagram of an example of a card holder structure provided in the present application. The card support structure 20 shown in fig. 2 includes a
Wherein the card-holding
The
In the conventional card holder structure, the card holder structure 20 may be made of different materials, for example, the
As described in the background, the size of the terminal device is small, the SD is closer to the antenna, and the signals associated with the SD card and the SD card can be coupled and finally radiated through the antenna, which results in higher radiation. In the process of Radiation Emission (RE) of the SD card, the SD card can be used as a radiation source, a data signal of the SD card can be coupled to an antenna to form radiation, and the coupling path from the SD card to the antenna can be affected by the card support structure, the Printed Circuit Board (PCB), the middle frame 10, the ground wire, and the like, so as to affect the radiation power and interfere with the reception and transmission of the signal of the SD card.
When the
In order to reduce the RE of the SD card during operation, the distance between the SD card and the antenna can be increased, but the design of the scheme for increasing the distance between the SD card and the antenna is limited by the size limit of the terminal device, and the terminal device cannot be further miniaturized.
Or, a filter circuit is added between the SD card clock circuit and the data signal circuit. However, commonly used filter circuits (such as passive filter and active filter) require adding filter devices, for example, passive filter circuits require adding passive components such as resistors, capacitors, inductors, and the like; the main form of the active filter circuit is active RC filter, and the active filter circuit not only comprises passive elements, but also comprises active elements such as a bipolar type tube, a unipolar type tube and an integrated operational amplifier. The scheme of the filter circuit can increase the board occupation area of the circuit device and is also limited by the limit value of the size of the terminal equipment, and the miniaturization of the terminal equipment cannot be further realized.
Or, by changing the shape or position of the antenna, the RE of the SD card during operation is reduced, and the scheme is constrained by the antenna design.
Therefore, a solution is needed, which can reduce the RE of the SD card during operation, improve the noise immunity of the SD card during antenna radiation, adapt to the design solutions of different types of existing terminal devices, and is not limited by the size limit of the terminal device.
Various forms of the card-holding structure 20 provided in the present application will now be described. Fig. 3 is a schematic diagram of a plurality of possible card holder structure designs provided in the embodiment of the present application.
It should be understood that the structure of the present application will be designed mainly for the card-holding
In one possible implementation, the card-
It should be understood that herein discontinuous metal structures may refer to a combination of metal and non-metal structures. For example, it is assumed that the card-holding frame slot includes a first region and a second region, the first region is a metal structure, and the second region is a non-metal structure. As shown in each of fig. 3, for the card-holding
In a possible implementation manner, the first region includes a plurality of sub-regions, the second region includes a plurality of sub-regions, and the plurality of sub-regions of the first region and the plurality of sub-regions of the second region are arranged at intervals. In other words, the card support frame groove area may include a plurality of metal structures and a plurality of non-metal structures, and the plurality of metal structures and the plurality of non-metal structures may be arranged at intervals.
Optionally, an area of the card support frame groove close to the card support cap is of a non-metal structure.
It should be understood that when the area of the card support frame slot close to the card support cap is a non-metal structure, the structure close to the antenna is a non-metal structure, which can reduce the interference of the metal structure to the electromagnetic wave, thereby reducing the radiation.
Specifically, the card-holding frame slot in the embodiment of the present application may include a
For example, as shown in fig. 3 (a), the card-holding
Alternatively, as shown in fig. 3 (b), the card-holding
Alternatively, as shown in fig. 3 (d), the card-receiving
Alternatively, as shown in fig. 3 (e), the card-receiving
In one possible implementation, the card-holding
It should be understood that when the card-holding cap is a non-metal structure, the interference of the metal structure to electromagnetic waves can be reduced, thereby reducing radiation.
Fig. 4 is a schematic diagram of another possible design of a card holder structure provided in the embodiment of the present application. In each of the possible card-receiving structures shown in fig. 4, the card-receiving
For example, as shown in fig. 4 (a), the hatched area is a non-metal structure, and the other area of the card-receiving
It is to be understood that the types of metals and non-metals are not limited in this application. For example, the metal may be copper or the like, and the nonmetal may be plastic or the like.
It should also be understood that, the shape and size of the card support structure are not limited in the present application, but only by changing the structure of the card support frame slot area in the card support structure, the size and size of the card support structure (including the card support body) can be adapted to terminal devices of different sizes and sizes, and the purpose of reducing radiation is achieved without changing the antenna structure or changing the distance between the SD card and the antenna.
Or, different card support structures are provided for different frequency ranges to ensure that the radiation value RE obtained through testing is the lowest when the SD operates in the frequency range. For example, when the SD card operates in a range from 744MHz to 1GHz, the card holder structure shown in fig. 3 (b) provided in this embodiment of the present application may be used to minimize RE and minimize interference to electromagnetic waves, which is not limited in this application.
Through above-mentioned technical scheme, hold in the palm the material of structure through reasonable setting card, this card holds in the palm the structure and can include discontinuous metal construction, for example by the alternate integrated form of metal construction and non-metal construction, this card holds in the palm the structure and can change the coupling path of SD card to the antenna, reduces metal construction to electromagnetic wave's interference to reduce the radiation. Meanwhile, the card support structure can adapt to terminal equipment with different sizes and dimensions, and the restriction of the card support structure on the size and dimension limit values of the terminal equipment is avoided.
Fig. 5 to 7 are schematic diagrams of RE test results provided in the present application. For the different card-holder structures provided in the present application, CISPR22RE experiments were performed on the terminal equipment, and the test results are shown in fig. 5 to 7. Fig. 5 is a schematic diagram of a test result of the all-metal card-holder structure, fig. 6 is a schematic diagram of a test result of the card-holder structure illustrated in fig. 3 (b), and fig. 7 is a schematic diagram of a test result of the card-holder structure illustrated in fig. 3 (d).
For example, in the test result graphs of fig. 5 to 7, the abscissa indicates different frequency bands, for example, different frequency bands from 30MHz to 1 GHz; the ordinate represents the index of RE. The two horizontal lines represent the upper limit values of the indexes of the REs in different frequency bands in different antenna polarization directions, for example, the curve 1 represents the upper limit values of the indexes of the REs in different frequency bands in the antenna horizontal polarization direction, that is, all radiation values in different frequency bands in the antenna horizontal polarization direction cannot exceed the corresponding values on the curve. Curve 2 represents the upper limit of the RE index for different frequency bands in the vertical polarization direction of the antenna, i.e. all radiation values in different frequency bands in the vertical polarization direction of the antenna cannot exceed the corresponding values on the curve. Curve 3 represents the actually measured RE value in the antenna horizontal polarization direction when the terminal device uses the card-holder structure, and curve 4 represents the actually measured RE value in the antenna vertical polarization direction.
Taking the 744MHz and 901MHz frequency bands as examples, different test results of table 1 are obtained for the all-metal card support structure, the card support structure illustrated in fig. 3 (b), and the card support structure illustrated in fig. 3 (d).
TABLE 1
It should be understood that the test results in table 1 above record values when RE is maximum in the antenna horizontal polarization direction and the antenna vertical polarization direction. For example, for the 744MHz frequency band, the maximum RE of the all-metal card-tray structure is 1.1dB, that is, the margin between the maximum RE value and the upper limit value is 1.1dB, so that the larger the margin is, the better the RE reduction effect of the structure representing the frequency band is. Correspondingly, for the 901MHz frequency band, the maximum RE of the all-metal card support structure is-1.7 dB, namely the maximum RE value already exceeds the upper limit value by 1.7 dB.
It can be seen that the maximum RE of the card-tray structure illustrated in fig. 3 (b) is 4.8dB for the 744MHz frequency band, that is, the radiation reduction effect of the card-tray structure illustrated in fig. 3 (b) is the best for the 744MHz frequency band. Similarly, the maximum RE of the card-tray structure illustrated in fig. 3 (d) is 8dB for the 901MHz frequency band, that is, the card-tray structure illustrated in fig. 3 (d) has the best radiation reduction effect for the 901MHz frequency band.
In addition, the radiation intensity of the card-holding structure illustrated in fig. 3 (b) and the card-holding structure illustrated in fig. 3 (d) provided in the present application is significantly lower than that of the all-metal card-holding structure. Therefore, the card support structure with the lowest radiation can be selected according to different working frequency bands of the SD card. When the SD card can work in 744MHz frequency band and 901MHz frequency band simultaneously, the effect of reducing radiation of each card support structure can be comprehensively considered, so that the card support structure with better radiation reduction effect in 744MHz frequency band and 901MHz frequency band is selected. Therefore, by adopting the discontinuous metal card support structure provided by the application, the coupling coefficient can be changed under certain conditions, the RE radiation intensity of the terminal equipment is reduced, and the immunity of the SD card during antenna radiation is improved.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
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