Shell and electronic product

Abstract

The utility model discloses a housing and an electronic product, the housing comprises a metal housing, the metal housing is provided with at least one antenna groove so as to divide the metal housing into a first metal part and a second metal part located at two sides of the antenna groove, and the antenna groove is filled with a non-metal medium. The first metal part and the second metal part are respectively provided with a feeding point and a grounding point, the antenna slot comprises a first slot section and a second slot section, and the length of the first slot section is greater than that of the second slot section. In the technical scheme of the utility model, the metal shell is divided into the first metal part and the second metal part through the antenna groove, and the two metal parts are electrically connected with a circuit matched with an electronic product through the feeding point and the grounding point for feeding, so that the metal shell can be used as a radiator of the antenna without additionally arranging an antenna radiator; the influence of the metal shell on an antenna signal is reduced, the omnidirectional antenna radiation is realized, and the cost of an electronic product can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic products, in particular to a shell and an electronic product. Background Art

[0002] Many electronic products, such as projectors, consume a lot of power and generate a lot of heat. This characteristic determines that a good heat dissipation system is necessary. In order to achieve a good heat dissipation effect, projector products often use a full metal shell design. However, metal has a great impact on antenna performance, blocking the antenna from radiating signals outward, and there are signal dead spots in certain directions, resulting in poor antenna performance, poor transmission effect, and poor user experience. Utility Model Content

[0003] The main purpose of the utility model is to provide a housing and an electronic product, aiming to provide a housing capable of reducing the blind spot of antenna signals.

[0004] To achieve the above-mentioned purpose, the utility model proposes a shell, which is applied to electronic products, including a metal shell, on which at least one antenna slot is opened to separate the metal shell into a first metal part and a second metal part located on both sides of the antenna slot, the antenna slot is filled with a non-metallic medium, the first metal part and the second metal part are respectively provided with a feeding point and a grounding point, the antenna slot includes a first slot section and a second slot section, the length of the first slot section is greater than the length of the second slot section, the first slot section is used to transmit and receive low-frequency antenna signals, and the second slot section is used to transmit and receive high-frequency antenna signals.

[0005] Optionally, a plurality of antenna slots are provided on the metal shell, and the plurality of antenna slots are distributed in a ring shape on the metal shell.

[0006] Optionally, the feeding point and the grounding point are each provided in plurality corresponding to the plurality of antenna slots;

[0007] Each of the feeding points is arranged on a side of the corresponding antenna slot close to the edge of the metal shell; or,

[0008] Each of the grounding points is arranged on a side of the corresponding antenna slot close to the edge of the metal shell.

[0009] Optionally, the distance between any two of the multiple antenna slots is not less than 10 cm.

[0010] Optionally, the antenna slot is arranged adjacent to an edge of the metal shell.

[0011] Optionally, the equivalent electrical length of the first slot segment is approximately one quarter wavelength; and / or,

[0012] The equivalent electrical length of the second slot segment is approximately one quarter of a wavelength.

[0013] Optionally, the first slot section and the second slot section are arranged at an angle.

[0014] Optionally, the included angle between the first slot segment and the second slot segment is 90 degrees.

[0015] The utility model also proposes an electronic product, which includes a shell, wherein the shell includes a metal shell, and at least one antenna slot is opened on the metal shell to separate the metal shell into a first metal part and a second metal part located on both sides of the antenna slot, and the antenna slot is filled with a non-metallic medium, and the first metal part and the second metal part are respectively provided with a feeding point and a grounding point, and the antenna slot includes a first slot section and a second slot section, the length of the first slot section is greater than the length of the second slot section, the first slot section is used to transmit and receive low-frequency antenna signals, and the second slot section is used to transmit and receive high-frequency antenna signals.

[0016] Optionally, the electronic product includes a projector.

[0017] In the technical solution of the utility model, the shell includes a metal shell, and at least one antenna slot is opened on the metal shell to separate the metal shell into a first metal part and a second metal part located on both sides of the antenna slot, and the antenna slot is filled with a non-metallic medium, and the first metal part and the second metal part are respectively provided with a feeding point and a grounding point; in this way, the metal shell is separated by the antenna slot to form the first metal part and the second metal part, and the two metal parts are electrically connected to the circuit matching the electronic product through the feeding point and the grounding point for feeding, so that the metal shell can be used as the radiator of the antenna without the need to additionally set up an antenna radiator, thereby reducing the influence of the metal shell on the antenna signal, which is conducive to realizing the omnidirectionality of the antenna radiation and can reduce the cost of the electronic product; at the same time, the antenna slot includes a first slot section and a second slot section, which can realize dual-frequency radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of an embodiment of a housing provided by the utility model;

[0020] Figure 2A schematic diagram of the three-dimensional structure of another embodiment of the housing provided by the utility model;

[0021] Figure 3a for Figure 1 2.4G radiation pattern before the middle antenna is reshaped;

[0022] Figure 3b for Figure 1 5G antenna radiation pattern before the middle antenna is reshaped;

[0023] Figure 4a for Figure 1 2.4G radiation pattern after the middle antenna is reshaped;

[0024] Figure 4b for Figure 1 The radiation pattern of the 5G antenna after the reshaping of the middle antenna.

[0025] Description of Figure Numbers:

[0026] Label name Label name 100 shell 22 Second slot section 1 Metal housing 3 Feeding point 2 Antenna slot 4 Grounding point 21 First slot section

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0031] Many electronic products, such as projectors, consume a lot of power and generate a lot of heat. This characteristic determines that a good heat dissipation system is necessary. In order to achieve a good heat dissipation effect, projector products often use a full metal shell design. However, metal has a great impact on antenna performance, blocking the antenna from radiating signals outward, and there are signal dead spots in certain directions, resulting in poor antenna performance, poor transmission effect, and poor user experience.

[0032] In order to solve the above problems, the utility model proposes a housing and an electronic product, aiming to provide a housing capable of reducing the blind spot of antenna signals. Figure 1 to Figure 2 The present invention is a schematic structural diagram of an embodiment provided by the present invention.

[0033] Please refer to Figure 1 to Figure 2 The utility model proposes a shell 100, which is applied to electronic products, including a metal shell 1, and at least one antenna slot 2 is opened on the metal shell 1 to separate the metal shell 1 into a first metal part and a second metal part located on both sides of the antenna slot 2, and the antenna slot 2 is filled with a non-metallic medium, and the first metal part and the second metal part are respectively provided with a feeding point 3 and a grounding point 4, and the antenna slot 2 includes a first slot section 21 and a second slot section 22, and the length of the first slot section 21 is greater than the length of the second slot section 22, and the first slot section 21 is used to send and receive low-frequency antenna signals, and the second slot section 22 is used to send and receive high-frequency antenna signals.

[0034] In the technical solution of the utility model, the shell 100 includes a metal shell 1, and at least one antenna slot 2 is opened on the metal shell 1 to separate the metal shell 1 into a first metal part and a second metal part located on both sides of the antenna slot 2, and the antenna slot 2 is filled with a non-metallic medium, and the first metal part and the second metal part are respectively provided with a feeding point 3 and a grounding point 4; in this way, the metal shell 1 is separated by the antenna slot 2 to form the first metal part and the second metal part, and the two metal parts are electrically connected to the circuit matching the electronic product through the feeding point 3 and the grounding point 4 for feeding, so that the metal shell 1 can be used as the radiator of the antenna without the need to additionally set up an antenna radiator, thereby reducing the influence of the metal shell 1 on the antenna signal, which is conducive to realizing the omnidirectionality of the antenna radiation and can reduce the cost of the electronic product; at the same time, the antenna slot 2 includes a first slot section 21 and a second slot section 22, which can realize dual-frequency radiation.

[0035] The equivalent electrical length of the antenna is usually half a wavelength and a quarter wavelength. Compared with half a wavelength, a quarter wavelength antenna is more directional. Therefore, in this embodiment, the equivalent electrical length of the first slot section 21 is about a quarter wavelength, and the equivalent electrical length of the second slot section 22 is about a quarter wavelength. This is conducive to achieving the omnidirectionality of the antenna and reducing the radiation dead angle. For electronic products such as projectors with metal shells 1, the size of the metal shell 1 itself is limited. Half a wavelength will result in a longer length of the antenna slot 2, and there will be isolation problems between multiple antennas. Therefore, a quarter wavelength is preferably used.

[0036] Specifically, in this embodiment, the first slot section 21 is used to send and receive 2.4G antenna signals, and the second slot section 22 is used to send and receive 5G antenna signals.

[0037] In order to better achieve the transition between different resonant frequencies of the first slot segment 21 and the second slot segment 22, in this embodiment, the first slot segment 21 and the second slot segment 22 are arranged at an angle. Preferably, the angle between the first slot segment 21 and the second slot segment 22 is 90 degrees, and the antenna slot 2 is arranged in an L shape as a whole.

[0038] It is understandable that even if the metal shell 1 is used as the antenna radiator to reduce interference with the antenna signal, it is difficult for a single antenna to achieve omnidirectional radiation. Therefore, in one embodiment, a plurality of antenna slots 2 are provided on the metal shell 1, and the plurality of antenna slots 2 are distributed in a ring shape on the metal shell 1. In this way, a plurality of antenna slots 2 are provided on the metal shell 1, and the metal shell 1 can serve as an antenna radiator for a plurality of antennas, which greatly reduces the cost. The ring distribution of the plurality of antenna slots 2 enables the antenna matrix formed by the plurality of antennas to radiate antenna signals in all directions, and can better control the vector superposition of the antenna matrix radiation pattern, thereby achieving omnidirectionality.

[0039] Among them, the number of the antenna slots 2 is not specifically limited, and can be two, three or more. When the electronic product is a projector, the number of the antenna slots 2 is set to four, two as Wi-Fi antennas, one as a Bluetooth antenna, and the other as a star flash antenna.

[0040] Of course, after the number of the antenna slots 2 is set to multiple, the feeding points 3 and the grounding points 4 are correspondingly set to multiple. Since the positions of the feeding points 3 and the grounding points 4 will affect the order of the antenna's feed signals, and thus affect the antenna's radiation direction, when the order of the feed signals of multiple antennas is inconsistent, there will be strong radiation in a certain direction and weak radiation in a certain direction, which may easily lead to signal dead spots and make it difficult to achieve omnidirectional antenna radiation. Therefore, in an embodiment of the utility model, each of the feeding points 3 is arranged on the side corresponding to the antenna slot 2 close to the edge of the metal shell 1, or each of the grounding points 4 is arranged on the side corresponding to the antenna slot 2 close to the edge of the metal shell 1. In this way, the order of the feed signals of multiple antennas remains consistent.

[0041] In order to prevent mutual interference between multiple antennas from affecting the reshaping target, in this embodiment, the distance between the multiple antenna slots 2 is not less than 10 cm.

[0042] However, the size of the metal shell 1 used for electronic products is usually limited. In order to meet the isolation requirement, in this embodiment, the antenna slot 2 is arranged near the edge of the metal shell 1. In this way, the distance requirement between multiple antennas can be met as much as possible without increasing the size of the metal shell 1.

[0043] The effect of the superposition of the radiation pattern vectors of multiple antennas depends on the relative spacing between the antennas and the resonance of a single antenna. By adjusting the size and relative position of the multiple antenna slots 2 and utilizing the mutual coupling between the antennas to reshape the radiation pattern, the antenna signal coverage problem of all electronic products having the metal shell 1 can be effectively solved. Figure 3a and Figure 3b , which are the antenna radiation patterns of 2.4GHz and 5GHz before reshaping (solid lines). The omnidirectionality is poor and not all of them fall outside the 0dB gain circle. Figure 4a and Figure 4b , which are the antenna radiation patterns of 2.4GHz and 5GHz after reshaping (solid line). After reshaping, the omnidirectionality is good and all fall outside the 0dB gain circle, among which the dotted circle is the 0dB gain circle. It can be seen that after continuous optimization and adjustment, the radiation pattern of the antenna slot 2 reshaped has a wider coverage range, there is no signal dead spot, and the user experience is greatly improved.

[0044] The utility model also proposes an electronic product, which includes a shell 100. The specific structure of the shell 100 refers to the above embodiment. Since the electronic product adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0045] The electronic product includes a projector. Of course, the electronic product can also be a mobile phone, a television, etc.

[0046] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A housing, applied to electronic products, characterized in that: It includes a metal shell, on which at least one antenna slot is opened to separate the metal shell into a first metal part and a second metal part located on both sides of the antenna slot, the antenna slot is filled with a non-metallic medium, the first metal part and the second metal part are respectively provided with a feeding point and a grounding point, the antenna slot includes a first slot section and a second slot section, the length of the first slot section is greater than the length of the second slot section, the first slot section is used to transmit and receive low-frequency antenna signals, and the second slot section is used to transmit and receive high-frequency antenna signals.

2. The housing according to claim 1, wherein: The metal shell is provided with a plurality of antenna slots, and the plurality of antenna slots are distributed in a ring shape on the metal shell.

3. The housing according to claim 2, characterized in that The feeding point and the grounding point are each provided in plurality corresponding to the plurality of antenna slots; Each of the feeding points is arranged on a side of the corresponding antenna slot close to the edge of the metal shell; or, Each of the grounding points is arranged on a side of the corresponding antenna slot close to the edge of the metal shell.

4. The housing according to claim 2, characterized in that The distance between any two of the multiple antenna slots is not less than 10 cm.

5. The housing according to any one of claims 1 to 4, characterized in that: The antenna slot is arranged adjacent to the edge of the metal shell.

6. The housing according to claim 1, wherein: The equivalent electrical length of the first slot segment is approximately one quarter wavelength; and / or, The equivalent electrical length of the second slot segment is approximately one quarter of a wavelength.

7. The housing according to claim 1, wherein: The first slot section and the second slot section are arranged at an angle.

8. The housing according to claim 7, characterized in that The included angle between the first slot section and the second slot section is 90 degrees.

9. An electronic product, characterized in that: Comprising a housing as claimed in any one of claims 1 to 8.

10. The electronic product according to claim 9, characterized in that: The electronic product includes a projector.

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