CN115377654A - Mobile terminal - Google Patents

Mobile terminal Download PDF

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Publication number
CN115377654A
CN115377654A CN202110545526.8A CN202110545526A CN115377654A CN 115377654 A CN115377654 A CN 115377654A CN 202110545526 A CN202110545526 A CN 202110545526A CN 115377654 A CN115377654 A CN 115377654A
Authority
CN
China
Prior art keywords
mobile terminal
middle plate
radiation
metal
grounding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110545526.8A
Other languages
Chinese (zh)
Inventor
邹敦元
邱孝钧
吴镇仲
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Oneplus Technology Shenzhen Co Ltd
Original Assignee
Oneplus Technology Shenzhen Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oneplus Technology Shenzhen Co Ltd filed Critical Oneplus Technology Shenzhen Co Ltd
Priority to CN202110545526.8A priority Critical patent/CN115377654A/en
Publication of CN115377654A publication Critical patent/CN115377654A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Set Structure (AREA)

Abstract

The application relates to a mobile terminal, comprising: the middle plate is made of metal materials. The frame is made of metal materials and arranged around the middle plate, the frame comprises a first radiation part and a first grounding part which are connected with each other, the first grounding part is fixedly connected with the middle plate, and the first radiation part and the middle plate are arranged at intervals. The circuit board is arranged on the middle plate. And the feeding part is used for electrically connecting the circuit board with the frame. And the key is arranged on the first radiation part and comprises a metal part, the metal part is insulated from the first radiation part, the middle plate and the circuit board, and the metal part and the first radiation part can transmit and receive signals. Can carry out make full use of to the metal part of the first radiation portion that originally can't send and receive signal and button to make the metal part of first radiation portion and button have the antenna function, ensure that mobile terminal improves the receiving and dispatching performance to the signal under the unchangeable condition of volume.

Description

Mobile terminal
Technical Field
The present application relates to the field of mobile terminal technology, and in particular, to a mobile terminal.
Background
Mobile terminals such as mobile phones can not only communicate, take pictures, listen to music, play games, but also realize various functions including positioning, information processing, scanning and the like, and in the process that network technology is developing towards a wider and wider band, the mobile terminals play more and more important roles in the production and life of people.
With the generation evolution of wireless communication, in order to support multiple frequency bands simultaneously for improving the performance of transmitting and receiving signals, the number and complexity of antennas of mobile terminal products such as mobile phones must be increased, which also results in the increase of the volume of the mobile terminal. When the volume of the mobile terminal is kept uniform, the mobile terminal cannot make enough installation space to accommodate the increased number of antennas. Therefore, the conventional mobile terminal generally has the defect that the small size and the strong signal transceiving function cannot be both considered.
Disclosure of Invention
The technical problem solved by the application is how to improve the signal transceiving performance of the mobile terminal on the basis of compact structure.
A mobile terminal, comprising:
the middle plate is made of a metal material;
the frame is made of a metal material and arranged around the middle plate, the frame comprises a first radiation part and a first grounding part which are connected with each other, the first grounding part is fixedly connected with the middle plate, and the first radiation part and the middle plate are arranged at intervals;
the circuit board is arranged on the middle plate;
the feeding part is used for electrically connecting the circuit board and the frame; and
and the key is arranged on the first radiation part and comprises a metal part, the metal part is arranged in an insulating way with the first radiation part, the middle plate and the circuit board, and the metal part and the first radiation part can transmit and receive signals.
In one embodiment, the feeding portion is electrically connected with the first radiating portion.
In one embodiment, at most one of the feeding portion and the first grounding portion is connected to a distal end of the first radiating portion.
In one embodiment, the feeding portion and the first grounding portion are respectively connected to two ends of the first radiating portion, which are oppositely arranged.
In one embodiment, the bezel further includes a second radiation portion and a second ground portion connected to each other, the second radiation portion is disposed at a distance from the first radiation portion and the middle plate, the second ground portion is fixedly connected to the middle plate, and the power feed portion is electrically connected to the second radiation portion.
In one embodiment, at most one of the feeding portion and the second grounding portion is connected to an end of the second radiating portion.
In one embodiment, the feeding portion and the second grounding portion are respectively connected to two ends of the second radiating portion, which are oppositely disposed.
In one embodiment, the antenna further includes an insulating member filled in a gap between the first radiation part and the second radiation part.
In one embodiment, the key further includes a slider and an elastic member, the first radiation portion is provided with a sliding hole in sliding fit with the metal portion, the slider is connected with the metal portion and is slidably disposed between the first radiation portion and the middle plate, and the elastic member is pressed between the slider and the middle plate.
In one embodiment, the elastic element comprises a spring and an abutting bead which are connected with each other, the sliding block is provided with a plurality of positioning grooves which are arranged at intervals and can be matched with the abutting bead, and the sliding of the sliding block can enable different positioning grooves to be matched with the abutting bead.
One technical effect of one embodiment of the present application is: the first radiation part and the middle plate are arranged at intervals and are connected with each other through the first grounding part to form grounding, and the feeding part electrically connects the frame and the circuit board. This enables the first radiation part to transmit and receive signals and to function as an antenna. Simultaneously, the metal part all sets up with first radiating part, medium plate and circuit board are insulating, can make the metal part pass through the mode of coupling and transmit high frequency current between the first radiating part to make the metal part also can send and receive signals and have the function of antenna, so both metal parts of first radiating part and button all have the antenna function, thereby make whole mobile terminal can support more frequency channels to the receiving and dispatching of signal. Therefore, make full use of the metal portion of the first radiation portion and the button that originally can not send and receive signals to make the metal portion of first radiation portion and button have the antenna function, so can avoid the increase of the mobile terminal volume that extra newly-increased antenna leads to, make whole mobile terminal compact structure, ensure that mobile terminal improves the receiving and dispatching performance to the signal under the unchangeable condition of volume.
Drawings
Fig. 1 is a schematic perspective view of a mobile terminal according to an embodiment;
fig. 2 is a partial structural diagram of the mobile terminal shown in fig. 1;
fig. 3 is a schematic perspective view of a key in the mobile terminal shown in fig. 1;
FIG. 4 is a schematic perspective view of the key shown in FIG. 3 from another viewing angle;
fig. 5 is a schematic diagram of a first exemplary partial plan structure of the mobile terminal shown in fig. 1;
FIG. 6 is a schematic diagram of a second exemplary partial plan structure of the mobile terminal shown in FIG. 1;
fig. 7 is a schematic diagram of a third exemplary partial plan structure of the mobile terminal shown in fig. 1;
fig. 8 is a schematic diagram of a fourth exemplary partial plan structure of the mobile terminal shown in fig. 1;
fig. 9 is a schematic diagram illustrating simulation of an S11 curve corresponding to different gaps between the first radiation part and the second radiation part of the mobile terminal shown in fig. 7;
fig. 10 is a schematic diagram illustrating simulation of an S11 curve of the mobile terminal shown in fig. 7 under a specific circuit structure;
fig. 11 is a simulation diagram of the signal radiation efficiency of the mobile terminal shown in fig. 7;
fig. 12 is a schematic diagram illustrating simulation of an S11 curve corresponding to different gaps between the first radiation part and the second radiation part of the mobile terminal shown in fig. 8.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "inner", "outer", "left", "right" and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1, 5, and 6, a mobile terminal 10 according to an embodiment of the present disclosure includes a midplane 100, a bezel 200, a circuit board 300, a power feed 400, and a key 500, where the mobile terminal 10 may be a smart phone.
Referring to fig. 2, 5 and 6, in some embodiments, the middle plate 100 is a substantially rectangular sheet structure, and the middle plate 100 is made of a metal material. The bezel 200 is a ring-shaped structure, and the bezel 200 is connected to the periphery of the middle plate 100, such that the bezel 200 is disposed around the middle plate 100. The bezel 200 includes a first radiation portion 210 and a first ground portion 220, one end of the first ground portion 220 is fixedly connected to the first radiation portion 210, and the other end of the first ground portion 220 is fixedly connected to the middle plate 100, that is, the first ground portion 220 is fixedly connected between the first radiation portion 210 and the middle plate 100, so that the first radiation portion 210 can be fixed to the middle plate 100 by the first ground portion 220. The first radiation portion 210 and the middle plate 100 are spaced apart from each other, that is, a space exists between the first radiation portion 210 and the middle plate 100, and in order to improve the structural strength of the entire mobile terminal 10, a non-conductive insulating material may be filled in the space between the first radiation portion 210 and the middle plate 100.
In some embodiments, the circuit board 300 is disposed on the middle board 100, the power feeding portion 400 is used to electrically connect the circuit board 300 and the first radiating portion 210, and the key 500 may be a switch key or a volume adjustment key. The key 500 includes a metal part 510, and it is obvious that the metal part 510 is also made of a metal material. The metal portion 510 is disposed on the first radiating portion 210, and the metal portion 510 is insulated from the first radiating portion 210, the middle plate 100 and the circuit board 300, in other words, the metal portion 510 is not in electrical connection with the first radiating portion 210, the middle plate 100 and the circuit board 300.
If the first radiating portion 210 is connected to the middle plate 100 to form a whole, that is, the first radiating portion 210 is directly and closely attached to the middle plate 100, there is no gap between the first radiating portion 210 and the middle plate 100, and the metal portion 510 is in electrical connection with at least one of the first radiating portion 210, the middle plate 100 and the circuit board 300. At this time, at least two grounding points are formed between the midplane 100 and both the first radiation portion 210 and the metal portion 510, so that the first radiation portion 210 and the metal portion 510 cannot transmit and receive signals (electromagnetic waves) and cannot function as an antenna. Therefore, when the mobile terminal 10 is enabled to support multiple frequency bands simultaneously to improve the performance of transmitting and receiving signals, the number of antennas is inevitably increased, and the increased number of antennas occupy more installation space, so that the size of the whole mobile terminal 10 is increased, which is not favorable for the miniaturization design of the mobile terminal 10. If the size of the mobile terminal 10 is sacrificed, the mobile terminal 10 cannot provide enough installation space to accommodate the increased antenna, and finally the effect of improving the signal transceiving performance cannot be achieved.
Referring to fig. 5 and 6, for the mobile terminal 10 in the above embodiment, the first radiation portion 210 is spaced apart from the middle board 100 and is connected to the middle board 100 through the first grounding portion 220 to form a ground, and the feeding portion 400 electrically connects the first radiation portion 210 to the circuit board 300. This enables the first radiation part 210 to transmit and receive signals and to function as an antenna. Meanwhile, the metal part 510 is insulated from the first radiation part 210, the middle plate 100 and the circuit board 300, so that high-frequency current can be transmitted between the metal part 510 and the first radiation part 210 in a coupling manner, and the metal part 510 can transmit and receive signals and has an antenna function, so that both the first radiation part 210 and the metal part 510 of the key 500 have an antenna function, and the whole mobile terminal 10 can support more frequency bands for transmitting and receiving signals. Therefore, the first radiation portion 210 and the metal portion 510 of the key 500, which cannot originally transmit and receive signals, are fully utilized, so that the first radiation portion 210 and the metal portion 510 of the key 500 have an antenna function, and thus, the increase of the volume of the mobile terminal 10 caused by an additional antenna can be avoided, the whole mobile terminal 10 is compact in structure, and the transmission and reception performance of the signals is improved under the condition that the volume of the mobile terminal 10 is not changed.
Referring to fig. 5, in some embodiments, at most one of the feeding portion 400 and the first grounding portion 220 is connected to the end 211 of the first radiation portion 210, and the first radiation portion 210 has two ends 211, i.e., an upper end and a lower end, along the length direction thereof. For example, the feeding portion 400 is connected to one end 211 (upper end) of the first radiation portion 210, and the first grounding portion 220 is connected to the middle portion of the first radiation portion 210, so that the first grounding portion 220 and the end of the first radiation portion 210 are kept at a certain distance. Of course, the first ground portion 220 may be connected to the end 211 of the first radiation portion 210, and the feeding portion 400 may be connected to the middle portion of the first radiation portion 210. At this time, the first radiation portion 210, the first ground portion 220, and the power feed portion 400 are substantially connected to form an Inverted F-shape, so that the first radiation portion 210 and the metal portion 510 together form an Inverted F Antenna (IFA), i.e., an IFA Antenna.
Referring to fig. 6, in some embodiments, the feeding portion 400 and the first grounding portion 220 are respectively connected to two ends 211 of the first radiation portion 210, which are the upper end and the lower end of the first radiation portion 210 in the length direction. For example, the feeding portion 400 is connected to one of the ends 211 (upper end) of the first radiation portion 210, and the first ground portion 220 is connected to the other end 211 (lower end) of the first radiation portion 210. For another example, the feeding portion 400 is connected to one end 211 (lower end) of the first radiating portion 210, and the first grounding portion 220 is connected to the other end 211 (upper end) of the first radiating portion 210. At this time, the first radiation portion 210, the first ground portion 220, and the power feed portion 400 are substantially connected to form a loop structure, so that the first radiation portion 210 and the metal portion 510 together form a loop antenna.
Therefore, when the feeding portion 400 is connected to the first radiation portion 210, the first radiation portion 210 and the metal portion 510 may form an antenna with a different structure, i.e., an IFA antenna or a loop antenna, according to a specific connection position of the feeding portion 400 and the first ground portion 220 on the first radiation portion 210.
Referring to fig. 7 and 8, in some embodiments, the bezel 200 further includes a second radiation portion 230 and a second grounding portion 240, one end of the second grounding portion 240 is fixedly connected to the second radiation portion 230, and the other end of the second grounding portion 240 is fixedly connected to the middle plate 100, that is, the second radiation portion 230 is fixed to the middle plate 100 through the second grounding portion 240. The second radiation part 230 and the first radiation part 210 are spaced from each other, so that a gap 250 exists between the second radiation part 230 and the first radiation part 210, and the width of the gap 250 may range from 3mm to 15 mm. The mobile terminal 10 further includes an insulator, the insulator is filled in the gap 250, and the gap 250 is filled with the insulator, so that the sealing performance of the mobile terminal 10 can be improved, and external liquid drops, dust and other pollutants are prevented from entering the mobile terminal 10 through the gap 250, thereby preventing the pollutants from corroding electronic components inside the mobile terminal 10. The insulator may be made of ceramic or plastic material, and the insulator may be filled in the gap 250 by injection molding or adhesive bonding. The second radiation part 230 is spaced apart from the middle plate 100 as much as the middle plate 100, that is, a space is formed between the second radiation part 230 and the middle plate 100, and in order to improve the structural strength of the entire mobile terminal 10, a non-conductive insulating material may be filled in the space between the second radiation part 230 and the middle plate 100.
In some embodiments, the feeding portion 400 is not connected to the first radiation portion 210, but connected to the second radiation portion 230, that is, the feeding portion 400 is electrically connected between the second radiation portion 230 and the circuit board 300.
Referring to fig. 7, for example, at most one of the feeding portion 400 and the second grounding portion 240 is connected to the end 231 of the second radiation portion 230. The two ends 231 are the upper end and the lower end of the second radiating portion 230 in the length direction. For example, the feeding portion 400 is connected to the middle portion of the second radiation portion 230, and the second ground portion 240 is connected to one end 231 (upper end) of the second radiation portion 230. At this time, the second radiating portion 230, the second ground portion 240, and the feeding portion 400 are substantially connected to form an inverted F shape, so that the second radiating portion 230 itself can form a relatively independent IFA antenna.
Although the feeding portion 400 is not connected to the first radiation portion 210, the first radiation portion 210 is connected to the midplane 100 through the first ground portion 220 to implement a grounding process, so that high-frequency currents on the first radiation portion 210 and the metal portions 510 on the keys 500 can be coupled to the second radiation portion 230, and then the first radiation portion 210 and the metal portions 510 also have an antenna function of transceiving signals. Therefore, the first radiation part 210, the second radiation part 230 and the metal part 510 all have the antenna function at the same time for the whole mobile terminal 10. Both the first radiating portion 210 and the metal portion 510 can be considered as extensions of the second radiating portion 230 used as the IFA antenna.
If the first radiating portion 210 is connected to the middle plate 100 to form a whole, i.e. the first radiating portion 210 is directly and closely attached to the middle plate 100, there is no gap between the first radiating portion 210 and the middle plate 100, and the metal portion 510 and at least one of the first radiating portion 210, the middle plate 100 and the circuit board 300 are in an electrically conductive relationship. At least two grounding points are formed between the first radiation part 210 and the metal part 510 and the middle plate 100, so that the first radiation part 210 and the metal part 510 cannot transmit and receive signals and cannot function as an antenna. At this time, only the second radiation section 230 has an antenna function.
In this embodiment, not only the second radiation part 230 may form one IFA antenna, but also both the first radiation part 210 and the metal part 510 have an antenna function. For example, the second radiation portion 230 may resonate in a 3.6GHz mode, and in cooperation with the coupling effect of the first radiation portion 210 and the metal portion 510, the second radiation portion 230 may also resonate in a 2.7GHz mode, so that the entire mobile terminal 10 can support more frequency bands for transmitting and receiving signals. Therefore, the first radiation portion 210 and the metal portion 510 of the key 500, which cannot originally transmit and receive signals, are fully utilized, so that the first radiation portion 210 and the metal portion 510 of the key 500 have an antenna function, and thus, the increase of the volume of the mobile terminal 10 caused by an additional antenna can be avoided, the whole mobile terminal 10 is compact in structure, and the transmission and reception performance of the signals is improved under the condition that the volume of the mobile terminal 10 is not changed. Since the insulator filled in the gap 250 cannot shield the signal, three of the first radiation portion 210, the second radiation portion 230, and the metal portion 510 can transmit and receive the signal from the position where the insulator is located.
Referring to fig. 8, for another example, the feeding portion 400 and the second grounding portion 240 are respectively connected to two end portions 231 of the second radiating portion 230. The feeding portion 400 is connected to one end 231 (upper end) of the second radiation portion 230, and the second grounding portion 240 is connected to the other end 231 (lower end) of the second radiation portion 230. Of course, the feeding portion 400 may be connected to one end 231 (lower end) of the second radiation portion 230, and the second grounding portion 240 may be connected to the other end 231 (upper end) of the second radiation portion 230. At this time, the second radiation portion 230, the second ground portion 240 and the feeding portion 400 are substantially connected to form a ring structure, so that the second radiation portion 230 itself may form a relatively independent loop antenna. Similar to the above-mentioned embodiment when the second radiation part 230 forms an IFA antenna, the high-frequency current on the first radiation part 210 and the metal part 510 on the key 500 may also be coupled to the second radiation part 230, so that the first radiation part 210 and the metal part 510 have the same antenna function of receiving and transmitting signals as the second radiation part 230 forming a loop antenna, and both the first radiation part 210 and the metal part 510 may be regarded as an extension of the second radiation part 230 used as a loop antenna. Therefore, the first radiating portion 210 and the metal portion 510 of the key 500, which cannot originally transmit and receive signals, may also have an antenna function for transmitting and receiving signals, so as to avoid an increase in the volume of the mobile terminal 10 caused by an additional antenna, so that the whole mobile terminal 10 is compact in structure, and the mobile terminal 10 is ensured to improve the performance of transmitting and receiving signals without changing the volume.
In the embodiment in which the first radiation portion 210, the metal portion 510, and the second radiation portion 230 used as the IFA antenna of the mobile terminal 10 have the antenna function at the same time, a simulation experiment is performed on the return loss characteristic curve (i.e., the S11 curve), and when the gain (DB) loss of the signal is larger, it indicates that the energy reflected by the antenna itself is larger, i.e., the efficiency of the antenna is lower. Conversely, when the gain (DB) loss of the signal is smaller, it indicates that the more energy is reflected back by the antenna itself, i.e. the higher the efficiency of the antenna. As shown in fig. 9, when the widths of the gaps 250 between the first radiation portion 210 and the second radiation portion 230 are respectively 6mm, 8mm, and 10mm, the antenna of the mobile terminal 10 of this embodiment forms three S11 curves corresponding to the widths of the three gaps 250, and the loss of the gain (DB) of the signal is relatively small in the frequency band interval corresponding to the trough of the S11 curve, that is, in the frequency band interval of 2.5GHz to 2.7GHz and the frequency band interval of 3.4GHz to 3.7GHz, so that the antenna of the mobile terminal 10 of this embodiment can operate in the two frequency band intervals of 2.5GHz to 2.7GHz and 3.4GHz to 3.7GHz, and can satisfy the frequency bands of 5G N41 (2496 MHz to 2690 MHz) and N78 (3300 MHz to 3800 MHz). By changing the circuit structure of the circuit board 300, which is matched with the first radiation portion 210, the metal portion 510 and the second radiation portion 230 as the IFA antenna, another S11 curve as shown in fig. 10 may be formed, and as can be seen, the curve has three troughs, so that the antenna of the mobile terminal 10 in this embodiment may operate in the frequency band interval corresponding to the three troughs. As can also be seen from the radiation efficiency simulation experiment shown in fig. 11, when the frequency is greater than 3.3GHz, the gain (DB) of the signal is relatively large, and from another perspective, it further indicates that the antenna of the mobile terminal 10 of this embodiment can operate in the frequency band range determined by 5G N41 (2496 MHz to 2690 MHz), N78 (3300 MHz to 3800 MHz).
In the embodiment in which the first radiation portion 210, the metal portion 510, and the second radiation portion 230 of the mobile terminal 10 simultaneously have the antenna function, a return loss characteristic curve (i.e., S11 curve) as shown in fig. 12 may be formed by a simulation experiment even when the width of the gap 250 between the first radiation portion 210 and the second radiation portion 230 is different. It can be known that the S11 curve has three troughs, and the signal gain (DB) loss is relatively small in the frequency band intervals corresponding to the troughs of the curve, that is, in the frequency band interval from 0.7GHz to 0.9GHz, the frequency band interval from 2.3GHz to 2.8GHz, and the frequency band interval from 4.7GHz to 5GHz, so that the antenna of the mobile terminal 10 can operate in the three frequency band intervals from 0.7GHz to 0.9GHz, from 3GHz to 2.8GHz, and from 4.7GHz to 5GHz, and can meet the requirements of the B28 (800 MHz) of LTE, and the three frequency bands of wifi2.4GHz and 5 GHz.
Referring to fig. 2, 3 and 4, in some embodiments, the button 500 is a volume adjustment button, and the mobile terminal 10 can be muted, vibrated and rung by the button 500. The key 500 further includes a slider 520 and an elastic member 530, the elastic member 530 includes a spring 531 and an abutment bead 532, and the abutment bead 532 may be spherical. Both the slider 520 and the elastic member 530 may be made of a plastic material, and the metal part 510 is fixed to the slider 520, and the metal part 510 protrudes to a certain height with respect to the surface of the slider 520. The first radiation portion 210 has a sliding hole 212, and the metal portion 510 is slidably engaged with the sliding hole 212, so as to prevent the metal portion 510 from electrically connecting with the first radiation portion 210, an insulating material may be covered on the surface of the metal portion 510. The slider 520 is slidably disposed in the space between the first radiating portion 210 and the middle plate 100. The slider 520 is provided with a plurality of positioning grooves 521, for example, the number of the positioning grooves 521 is exactly three, and the three positioning grooves 521 are arranged at intervals along the length direction of the slider 520. The abutting ball 532 is connected to one end of the spring 531 and can be engaged with the positioning groove 521, and the other end of the spring 531 can abut against the middle plate 100. When the user pushes the metal part 510 to slide in the slide hole 212 along the length direction of the first radiation part 210, the metal part 510 can drive the slider 520 to slide relative to the middle plate 100, so that the abutment bead 532 can be matched with different positioning grooves 521 on the slider 520. When the abutting bead 532 is matched with the positioning groove 521, the abutting bead 532 collides with the slide block 520 to generate a prompt sound for adjusting the position. For example, the mobile terminal 10 may be in a silent state when the abutment bead 532 is mated with one of the positioning slots 521 at the edge of the slider 520; when the abutment bead 532 is engaged with the positioning groove 521 in the middle of the slider 520, the mobile terminal 10 may be in a vibration state; when the abutment bead 532 is engaged with the other positioning groove 521 of the edge of the slider 520, the mobile terminal 10 may be in a ringing state.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A mobile terminal, comprising:
the middle plate is made of a metal material;
the frame is made of a metal material and arranged around the middle plate, the frame comprises a first radiation part and a first grounding part which are connected with each other, the first grounding part is fixedly connected with the middle plate, and the first radiation part and the middle plate are arranged at intervals;
the circuit board is arranged on the middle plate;
the feeding part is used for electrically connecting the circuit board and the frame; and
the key is arranged on the first radiation part and comprises a metal part, the metal part is insulated from the first radiation part, the middle plate and the circuit board, and the metal part and the first radiation part can transmit and receive signals.
2. The mobile terminal of claim 1, wherein the feeding portion is electrically connected to the first radiating portion.
3. The mobile terminal of claim 2, wherein at most one of the feeding portion and the first grounding portion is connected to a distal end of the first radiating portion.
4. The mobile terminal according to claim 2, wherein the feeding portion and the first grounding portion are respectively connected to two ends of the first radiating portion disposed opposite to each other.
5. The mobile terminal according to any one of claims 1 to 4, wherein the bezel further comprises a second radiating portion and a second grounding portion connected to each other, the second radiating portion is disposed at a distance from the first radiating portion and the middle plate, the second grounding portion is fixedly connected to the middle plate, and the power feeding portion is electrically connected to the second radiating portion.
6. A mobile terminal according to claim 5, characterized in that at most one of the feeding portion and the second grounding portion is connected to a tip end of the second radiating portion.
7. The mobile terminal according to claim 5, wherein the feeding portion and the second grounding portion are respectively connected to two ends of the second radiating portion disposed opposite to each other.
8. The mobile terminal according to claim 5, further comprising an insulating member filled in a gap between the first radiation part and the second radiation part.
9. The mobile terminal according to any one of claims 1 to 4, wherein the key further comprises a sliding block and an elastic member, the first radiating portion is provided with a sliding hole in sliding fit with the metal portion, the sliding block is connected to the metal portion and slidably disposed between the first radiating portion and the middle plate, and the elastic member is pressed between the sliding block and the middle plate.
10. The mobile terminal according to claim 9, wherein the elastic member comprises a spring and an abutting bead connected to each other, the slider has a plurality of positioning slots formed therein at intervals and capable of being engaged with the abutting bead, and the slider slides to engage different positioning slots with the abutting bead.
CN202110545526.8A 2021-05-19 2021-05-19 Mobile terminal Pending CN115377654A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110545526.8A CN115377654A (en) 2021-05-19 2021-05-19 Mobile terminal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110545526.8A CN115377654A (en) 2021-05-19 2021-05-19 Mobile terminal

Publications (1)

Publication Number Publication Date
CN115377654A true CN115377654A (en) 2022-11-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110545526.8A Pending CN115377654A (en) 2021-05-19 2021-05-19 Mobile terminal

Country Status (1)

Country Link
CN (1) CN115377654A (en)

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