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WO2018157530A1 - Touche latérale inductive et dispositif terminal - Google Patents

Touche latérale inductive et dispositif terminal Download PDF

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Publication number
WO2018157530A1
WO2018157530A1 PCT/CN2017/090654 CN2017090654W WO2018157530A1 WO 2018157530 A1 WO2018157530 A1 WO 2018157530A1 CN 2017090654 W CN2017090654 W CN 2017090654W WO 2018157530 A1 WO2018157530 A1 WO 2018157530A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit board
flexible circuit
side key
mounting groove
board
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.)
Ceased
Application number
PCT/CN2017/090654
Other languages
English (en)
Chinese (zh)
Inventor
吕仁
查鹏
毛维华
徐一
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies 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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201780053969.7A priority Critical patent/CN109644214B/zh
Publication of WO2018157530A1 publication Critical patent/WO2018157530A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/59—Fixed connections for flexible printed circuits, flat or ribbon cables or like structures
    • 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
    • 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
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/96—Touch switches

Definitions

  • the present invention relates to the field of pressure button technology, and in particular, to an inductive side button and a terminal device.
  • virtual pressure button technology has been widely used in terminal devices such as mobile phones. It is an important direction for innovative design of mobile devices and other terminal devices. It has various application scenarios, such as replacing volume buttons, power buttons, added potential buttons, etc. .
  • the virtual pressure buttons are divided into many types according to the realization principle, such as capacitive, resistive, and inductive, and the inductive pressure button is one of them.
  • the existing terminal device (such as a mobile phone) includes a metal frame 01.
  • the metal frame 01 is provided with a mounting slot 02 along the thickness direction of the terminal device, and an inductive side button is inserted into the mounting slot 02.
  • 03 inductive pressure button
  • the inductive side button 03 comprises a flexible circuit board 031 provided with an inductive coil
  • the flexible circuit board 031 is pasted with memory foam 032 on both sides in the thickness direction, the memory foam 032 and The side walls of the mounting groove 02 are closely fitted, and the flexible circuit board 031 is electrically connected to the main board of the terminal device through a connector.
  • the finger presses the metal frame 01 corresponding to the mounting slot 02, and the pressing of the finger causes the metal frame 01 to be slightly deformed.
  • the deformation causes the side wall of the mounting slot 02 to approach the inductive coil on the flexible circuit board 031, and the inductance.
  • the coil can recognize whether or not the metal object is in proximity, that is, whether the pressing is generated, and further determine whether there is a key operation.
  • inductor Ld and resistor Rs inductor coil equivalent is the inductor and parasitic resistance in series
  • the capacitors are composed of a resonant circuit connected in parallel, the circuit having a certain resonant frequency.
  • U stands for metal object
  • V stands for inductor coil
  • M stands for coupling between metal object and inductor coil.
  • the generated high-frequency magnetic field generates eddy currents on the surface of the metal object (indicated by arrow a in the figure), and the induced magnetic field generated by the eddy current reacts to the inductor coil, so that the oscillation capability of the resonant circuit is attenuated, and the equivalent inductance of the new inductor coil is formed.
  • the parasitic resistance value produces a new parallel resonant circuit.
  • the main board can determine whether the metal object is close (ie, whether the pressing is generated) by judging the difference between the front and rear resonant frequencies, and then determine whether there is a key action.
  • the inductive side key 03 In the process of inserting the inductive side key 03 into the mounting slot 02, as shown in FIG. 1, the inductive side key 03 needs to be clamped by the clamp first, so that the memory foam 032 is thinned by pressing, and then needs to be within 3 seconds.
  • the extruded inductive side key 03 is inserted into the mounting slot 02, and then waits for 10 seconds. After the memory foam 032 resumes expansion, the inductive side key 03 is fixed in the mounting slot by the pressing force of the memory foam 032. 02. Since the flexible circuit board 031 is affixed with the memory foam 032 on both sides in the thickness direction, the memory foam 032 needs to be squeezed and expanded during the mounting process, so that the memory foam 032 is easily flexible during the extrusion and expansion process.
  • the circuit board 031 is deformed, and after the deformed flexible circuit board 031 is inserted into the mounting groove 02, the distance between the flexible circuit board 031 and the side wall of the mounting groove 02 is inconsistent, thereby affecting the induction pressing action of the flexible circuit board 031.
  • the invention provides an inductive side key and a terminal device.
  • the flexible circuit board In the process of inserting the inductive side key into the mounting slot, the flexible circuit board is not easily deformed, thereby ensuring the distance of the flexible circuit board to the sidewall of the mounting slot. consistency.
  • an embodiment of the present invention provides an inductive side key comprising a support plate and a flexible circuit board provided with an inductive coil, the support plate comprising a plate body made of a hard insulating material, the flexibility
  • the circuit board is fixed on at least one side surface of the board body, and the board body is fixed on the surface of the flexible circuit board with a fixing base made of an elastic material, and the fixing platform has a thickness larger than the Thickness of flexible circuit board
  • the inductive side button provided by the embodiment of the present invention, since the thickness of the fixing table is greater than the thickness of the flexible circuit board, after the inductive side key is inserted into the mounting slot, the surface of the fixing table away from the board body is matched with the inner wall of the mounting slot. In contact, the flexible circuit board and the inner wall of the mounting groove are separated by a distance, so that the flexible circuit board can determine whether there is a pressing action by detecting whether the inner wall of the mounting groove changes its distance.
  • the thickness of the fixing table is greater than the thickness of the flexible circuit board, so that the flexible circuit board can be prevented from being damaged by contact friction with the inner wall of the mounting groove, thereby ensuring the normal operation of the flexible circuit board; since the fixing table is made of an elastic material Thus, the elastic contraction of the fixing table enables the inductive side key to be smoothly inserted into the mounting groove, and the pressing force of the fixing table caused by the pressing of the inner wall of the mounting groove enables the fixing table and the inner wall of the mounting groove to be tightly fitted, thereby Realizing the fixing of the inductive side key in the mounting groove; since the flexible circuit board is fixed on at least one side surface of the board body, the fixing table is fixed on the surface of the board body for fixing the flexible circuit board, instead of being disposed in the flexible On the circuit board, during the insertion of the inductive side key into the mounting slot, the pressing force generated by the elastic contraction of the fixing table acts on the surface of the board instead of the surface of the flexible circuit board, so that the flexible circuit board does not Deformed by the compression
  • the flexible circuit board is adhered to a surface of the board by a backing.
  • the flexible circuit board can also be fixed to the board body by screws. Compared with the way of fixing the screws on the board body, the flexible circuit board is glued to the surface of the board body by the adhesive, which can reduce the number of parts, and can also reduce the number of parts. Convenient for the flexible circuit board to be removed from the board.
  • the board is configured to fix a surface of the flexible circuit board with a positioning post, the flexible A positioning hole is defined in the circuit board, and the positioning post fits through the positioning hole. In this way, when the flexible circuit board is pasted with the board body, the positioning of the flexible circuit board can be conveniently realized by the cooperation of the positioning post and the positioning hole.
  • the flexible circuit board is folded and fixed to the two sides of the board body On the opposite surface.
  • the distance between the two sides of the flexible circuit board is equal to the inner wall of the mounting slot, and the inductance of the inductor is not affected, so that the distance between the inner walls of the mounting slots is not too small, so that the flexible circuit board can be adapted.
  • the distance between the inner walls of both sides of the slot is currently installed without affecting the sensitivity of the induction.
  • the flexible circuit board includes a first fold portion fixed to the first surface of the board body and a second fold portion fixed to the second surface of the board body, the first fold And the second folding portion is connected by a connecting portion, the connecting portion covers the first side edge of the plate body, and the connecting portion has a length smaller than that of the first folding portion and the second folding portion length. Since the length of the connecting portion is smaller than the length of the first folded portion and the second folded portion, when the flexible circuit board is folded, the resistance of the folding can be reduced, thereby making the flexible circuit board fold easier.
  • a portion of the first side edge of the board that does not cover the connecting portion is provided with a reinforcing rib.
  • the rib has a thickness greater than a thickness of the plate body. This can increase the strength and rigidity of the support plate, and can greatly reduce the deformation of the support plate during the insertion of the inductive side key into the mounting groove, thereby preventing the flexible circuit board from being greatly deformed.
  • the first surface of the board is provided with two first fixed stations, and the flexible circuit a first folded portion of the plate is disposed between the two first fixed stages, a second second fixed surface is disposed on the second surface of the plate body, and a second folded portion of the flexible circuit board is Provided between two of the second fixed stations.
  • the support plate may also be configured as follows: a first fixing platform is disposed on the first surface of the plate body, and the first folding portion of the flexible circuit board is disposed on a side of the first fixing platform along the length direction of the plate body, and the plate body is The second surface is provided with a second fixing platform, and the second folding portion of the flexible circuit board is disposed on one side of the second fixing platform along the longitudinal direction of the plate body.
  • a fixing platform is disposed, and the first surface and the second surface of the plate body are provided with two fixing tables, and the first folding of the flexible circuit board
  • the uneven portion and the second folding unevenness are located between the two fixing stages, so that the supporting plate is not easily inclined during the insertion of the supporting plate into the mounting groove, thereby making the flexible circuit board not easy to tilt, thereby ensuring the flexible circuit board to the installation.
  • the consistency of the groove sidewall distance is disposed, and the first surface and the second surface of the plate body are provided with two fixing tables, and the first folding of the flexible circuit board.
  • the board body is provided with a detaching opening at at least one end of the length direction.
  • the tool such as the tweezers can pick up the support plate from the mounting groove by clamping the disassembly port, thereby facilitating the removal and replacement of the support plate and the flexible circuit board.
  • the thickness of the fixing table is gradually reduced in the insertion direction. This allows the support plate to be easily inserted into the mounting slot.
  • the fixing station is made of plastic or soft glue.
  • Plastic and soft rubber also have good elasticity and wear resistance. They can be expanded and restored immediately after being squeezed, which can shorten the time for the support plate to be inserted into the installation groove, improve the assembly efficiency, and the soft rubber can be expanded and restored.
  • the pressing force is guaranteed to be constant, thus ensuring the stability of the inductive side key in the mounting groove.
  • an embodiment of the present invention provides a terminal device, including a metal frame, and a mounting slot is formed on the metal frame along a thickness direction of the terminal device, and the mounting slot is internally inserted in any one of the foregoing embodiments.
  • the inductive side key, the fixing table of the inductive side key is closely matched with the inner wall of the mounting groove.
  • the inductive side key inserted in the mounting slot in the terminal device in the embodiment of the present invention is the same as the inductive side key sucker in any of the above embodiments, the two can solve the same technical problem and achieve the same The expected effect; when pressing is required, the finger presses the metal frame corresponding to the mounting groove, and the pressing of the finger causes slight deformation of the metal frame, and the deformation causes the side wall of the mounting groove to approach the inductor coil on the flexible circuit board, and the inductance
  • the coil can recognize whether or not the metal object is in proximity, that is, whether the pressing is generated, and further determine whether there is a key operation.
  • the flexible circuit board is adjacent to both sides of the inner wall of the mounting slot and the mounting slot in a thickness direction of the board body
  • the distance between the inner walls is equal and less than the maximum sensing distance of the flexible circuit board.
  • the insertion slot of the mounting slot is formed with a chamfer. This allows the inductive side key to be inserted into the mounting slot.
  • the board body is provided with a detaching opening at at least one end of the length direction, and one end of the detaching opening is disposed with an inner wall of the mounting slot A gap is formed between the parts to allow the removal tool to extend. This facilitates the removal of the support plate from the mounting slot.
  • FIG. 1 is a process diagram of a conventional inductive side key inserted into a mounting slot
  • Figure 2 is a schematic diagram (model diagram and equivalent circuit diagram) of the inductive side key
  • Figure 3 is a schematic diagram of an inductive side key (a schematic diagram of the coupling of a metal object and an inductive coil when a metal object approaches);
  • FIG. 4 is a schematic structural view of an inductive side key according to an embodiment of the present invention (a flexible circuit board is disposed on a side of a board body);
  • FIG. 5 is a schematic structural view of an inductive side key according to an embodiment of the present invention (a flexible circuit board is disposed on both sides of the board body);
  • FIG. 6 is a schematic structural view of an inductive side key according to an embodiment of the present invention (from another perspective);
  • FIG. 7 is a schematic structural view of a support plate according to an embodiment of the present invention.
  • Figure 8 is a side elevational view of the support plate in accordance with an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a terminal device (handset) according to an embodiment of the present invention.
  • FIG. 10 is a cross-sectional view showing a mounting slot in a terminal device (handset) according to an embodiment of the present invention
  • Figure 11 is an enlarged cross-sectional view showing the mounting slot in the terminal device (handset) in the embodiment of the present invention.
  • an embodiment of the present invention provides an inductive side key including a support board 2 and a flexible circuit board 1 provided with an inductor coil, and the support board 2 includes a board body 21 made of a hard insulating material.
  • the flexible circuit board 1 is fixed on at least one side surface of the board body 21.
  • the surface of the board body 21 for fixing the flexible circuit board 1 is provided with a fixing base 22 made of an elastic material, and the thickness of the fixing table 22 is larger than the flexible circuit.
  • the thickness of the fixing table 22 refers to the distance from the surface of the fixed table 22 away from the plate body 21 from the surface of the plate body 21. For example, as shown in FIG. 4, the thickness of the fixing table 22 is a.
  • the inductive side key provided by the embodiment of the present invention has a large thickness a of the fixed stage 22.
  • the thickness b of the flexible circuit board 1 (as shown in FIG. 4)
  • the surface of the fixing table 22 away from the board 21 is mounted.
  • the inner wall of the slot 310 is in contact with each other, and the flexible circuit board 1 and the inner wall of the mounting slot 310 are separated by a distance, so that the flexible circuit board 1 can determine whether there is a change in the distance between the inner wall of the mounting slot 310 and the inner wall of the mounting slot 310. Press the action.
  • the thickness a of the fixing table 22 is greater than the thickness b of the flexible circuit board 1, so that the flexible circuit board 1 can be prevented from being damaged by contact with the inner wall of the mounting groove 310, thereby ensuring the normal operation of the flexible circuit board 1;
  • the table 22 is made of an elastic material, so that the elastic side contraction of the fixing table 22 enables the inductive side key to be smoothly inserted into the mounting groove 310, and the fixing table 22 can be pressed by the inner wall of the mounting groove 310.
  • the fixing table 22 and the inner wall of the mounting groove 310 are tightly engaged to realize the fixing of the inductive side key in the mounting groove 310. Since the flexible circuit board 1 is fixed on at least one side surface of the board body 21, the fixing table 22 is fixed.
  • the pressing force generated by the elastic contraction of the fixing table 22 during the insertion of the inductive side key into the mounting groove 310 It acts on the surface of the board body 21 instead of the surface of the flexible circuit board 1, so that the flexible circuit board 1 is not deformed by the compression caused by the elastic contraction of the fixing table 22, and the flexible circuit board 1 is inserted into the mounting groove 3. After 10, the distance from the side of the flexible circuit board 1 to the side wall of the mounting groove 310 can be kept uniform and stable, thereby preventing the inductive performance of the flexible circuit board 1 from being affected.
  • the flexible circuit board 1 is not deformed by the compression caused by the elastic contraction of the fixing base 22, thereby ensuring The distance between the flexible circuit board 1 and the side walls of the mounting groove 310 is uniform and stable, thereby preventing the inductive performance of the flexible circuit board 1 from being affected.
  • the inductor coil in the flexible circuit board 1 is electrically connected to the motherboard of the terminal device (such as a mobile phone) through the connector 3, and the connector 3 can transmit the induction coil sensing signal to the motherboard, and the motherboard can It is judged based on the signal whether there is a pressing action.
  • the flexible circuit board 1 can be fixed to the board body 21 by screws.
  • the flexible circuit board 1 can also be attached to the board body 21 by adhesive. on the surface.
  • the flexible circuit board 1 can not only reduce the number of parts, but also facilitate the flexible circuit board 1 from the board body 21. Disassembly.
  • the flexible circuit board 1 and the board body 21 are pasted, since the widths of the flexible circuit board 1 and the board body 21 are relatively small, the flexible circuit board 1 is easily misaligned when pasted together with the board body 21, in order to solve this problem, As shown in FIG. 5, the surface of the board 21 for fixing the flexible circuit board 1 is provided with a positioning post 23, and the flexible circuit board 1 is provided with a positioning hole 11 which is disposed in the positioning hole 11. Thus, when the flexible circuit board 1 and the board body 21 are pasted, the positioning of the flexible circuit board 1 can be conveniently achieved by the cooperation of the positioning post 23 and the positioning hole 11, so that the flexible circuit board 1 and the board body 21 can be pasted together. It is prone to misplacement.
  • the flexible circuit board 1 and the board body 21 are less likely to be misaligned.
  • the number of the positioning holes 11 is two, and two positioning positions are made.
  • the holes 11 are spaced apart along the length of the plate body 21, and the number of the positioning posts 23 is two.
  • the two positioning posts 23 are matched with the two positioning holes 11 in one-to-one correspondence. Since the number of the positioning holes 11 and the positioning posts 23 is two, the two positioning holes 11 are matched with the two positioning posts 23 one by one, and the relative rotation between the flexible circuit board 1 and the board body 21 can be prevented.
  • the flexible circuit board 1 and the board body 21 can be made less likely to be misaligned, thereby improving both of them. Positioning effect between.
  • the inductive side key provided in the embodiment of the present invention is inserted into the mounting slot 310 of the metal frame 300 of the terminal device (such as a mobile phone).
  • the button When the button needs to be pressed, the finger presses and the mounting slot 310.
  • the corresponding metal frame 300 causes the metal frame 300 to be slightly deformed, and the deformation can be generated to make the side wall of the mounting groove 310 approach the inductance coil on the flexible circuit board 1 (the deformation amount can be induced in the 1 micrometer inductor coil, the shape variable and the force
  • the size is related to the material strength. For example, setting 200 gram force can be deformed by 1 micrometer.
  • the inductor coil When the pressing force is less than this value, the inductor coil will not be sensed, which can prevent misoperation.
  • the inductor coil on the flexible circuit board 1 can be recognized. Whether or not there is a metal object approaching, that is, whether the pressing is generated, and then determining whether there is a button action.
  • the metal frame 300 of the terminal device (illustrated by the mobile phone as an example) will inevitably undergo torsion deformation.
  • the mobile phone is installed in the tight pocket of the clothes, and the mobile phone case may have some twist when the person is pulling out or walking.
  • the deformation makes it easy for the metal frame 300 to reach the amount of deformation that the inductor can sense, thereby causing the inductance coil to be misjudged as having a pressing action, which is very disadvantageous for the normal use of the mobile phone.
  • the width of the mounting groove 310 the distance between the two sides of the flexible circuit board 1 to the inner walls of both sides of the mounting groove 310 (the inner walls on both sides in the thickness direction of the flexible circuit board 1) is equal.
  • the deformation of the metal bezel 300 increases the distance between the inner wall of the flexible circuit board 1 to the mounting groove 310, the distance from the inner wall of the other side of the mounting groove 310, and the amount of distance reduction and the amount of distance increase. Equally, the offset effect of the metal frame 300 can be offset.
  • the inductance coil senses a distance from the inner wall of the mounting groove 310, the non-pressing action can be judged, thereby solving the problem of misjudgment. problem.
  • the inductance of the inductance coil in the flexible circuit board 1 is usually 0.2 to 0.8 mm, and if it exceeds this distance, the sensitivity of the induction coil is lowered. Since the flexible circuit board 1 is very thin, it is necessary to ensure that the distance between the two sides of the flexible circuit board 1 to the inner walls of the mounting slots 310 is equal and within the maximum sensing distance of the inductor coil, the distance between the inner walls of the mounting slots 310 is required. It is very small, but this will increase the processing difficulty of the mounting groove 310, which is not conducive to reducing the processing cost.
  • the distance between the inner walls of the mounting slots 310 is not too small, as shown in FIG.
  • the flexible circuit board 1 is folded and fixed to the opposite surfaces of the board body 21.
  • the inner wall distances of the two sides of the mounting groove 310 fall within the range that is easy to be processed by the current mounting groove 310, so that the flexible circuit board 1 can be fitted to the inner walls of both sides of the current mounting groove 310.
  • the distance does not affect the sensitivity of the induction.
  • the flexible circuit board 1 includes a first folded portion 12 fixed to the first surface of the board body 21 and a second folded portion 13 fixed to the second surface of the board body 21, first The folding portion 12 and the second folding portion 13 are connected by a connecting portion 14, and the connecting portion 14 covers the first side edge 211 of the plate body 21.
  • the length of the connecting portion 14 is smaller than the first folding portion 12 and the second folding portion The length of the portion 13. Since the length of the connecting portion 14 is smaller than the lengths of the first folding portion 12 and the second folding portion 13, when the flexible circuit board 1 is folded, the resistance of the folding can be reduced, thereby making the flexible circuit board 1 Folding is easier, which helps to shorten the folding time and improve the installation efficiency of the inductive side keys.
  • the support plate 2 Since the thickness of the support plate 2 is relatively small, the support plate 2 is easily deformed during the insertion of the inductive side key into the mounting groove 310.
  • the plate The portion of the first side edge 211 of the body 21 that does not cover the connecting portion 14 is provided with a reinforcing rib 212, and the thickness of the reinforcing rib 212 is larger than the plate The thickness of the body 21.
  • the structure of the support plate 2 is not unique.
  • the support plate 2 may have the following structure: the first surface 213 of the plate body 21 is provided with a first fixing base 221, and the flexible circuit
  • the first folded portion 12 of the board 1 is disposed on a side of the first fixing base 221 along the longitudinal direction of the board body 21, and the second surface 214 of the board body 21 is provided with a second fixing base 222, the first of the flexible circuit board 1.
  • the two folded portions 13 are disposed on one side of the second fixing table 222 along the longitudinal direction of the plate body 21.
  • the support plate 2 may also be the structure shown in FIG. 6 and FIG. 7.
  • the first surface 213 of the plate body 21 is provided with two first fixing stages 221, and the first folded portion 12 of the flexible circuit board 1 is disposed. Between the two first fixing stages 221, two second fixing stages 222 are disposed on the second surface 214 of the board body 21, and the second folding part 13 of the flexible circuit board 1 is disposed on the two second fixing stages. Between 222.
  • the first surface 213 and the second surface 214 of the plate body 21 are provided with a fixing base 22, and in the solution shown in FIGS. 6 and 7, the first surface 213 and the second surface 214 of the plate body 21 are formed.
  • Two fixing stages 22 are provided on the upper side, and the first folded portion 12 and the second folded portion 13 of the flexible circuit board 1 are respectively located between the two fixing stages 22, so that the supporting plate 2 is inserted into the mounting groove 310.
  • the support plate 2 is not easily tilted, so that the flexible circuit board 1 is not easily tilted, and the uniformity of the distance between the flexible circuit board 1 and the side wall of the mounting groove 310 is ensured.
  • At least one end of the plate body 21 along the longitudinal direction is provided with a detaching opening 24, so that the tool such as the scorpion can clamp the detaching port 24 and the supporting plate 2 It is picked up from the mounting groove 310, thereby facilitating the removal and replacement of the support plate 2 and the flexible circuit board 1.
  • the thickness of the fixing table 22 is gradually reduced in the insertion direction (i.e., the thickness of the upper end of the fixing table 22 in Fig. 10 is larger than the thickness of the lower end).
  • the support plate 2 is inserted into the mounting groove 310, and the fixing table 22 is in contact with the inner wall of the mounting groove 310.
  • the lower end of the fixing base 22 has a large thickness, the lower end of the fixing table 22 does not easily protrude into the mounting groove 310, thereby The support plate 2 is not easily inserted into the mounting groove 310, and therefore, the thickness of the fixing table 22 is gradually reduced in the insertion direction, so that the thickness of the lower end of the fixing table 22 is relatively small, and during the insertion of the support plate 2 into the mounting groove 310, The lower end of the fixing table 22 easily protrudes into the mounting groove 310, so that the process of inserting the support plate 2 into the mounting groove 310 is more convenient.
  • the draft angle of the fixing table 21 is 1.5 to 2°.
  • the material of the fixing table 22 is not unique.
  • the fixing table 22 can be made of memory foam, and the fixing table 22 can also be made of plastic. Compared with the memory foam, the plastic has better elasticity during the insertion of the support plate 2 into the mounting groove 310, and can be immediately expanded and restored after being squeezed (the memory foam can be expanded and recovered 10 seconds after being squeezed).
  • the time for the support plate 2 to be inserted into the mounting groove 310 can be shortened, and the assembly efficiency can be improved; the plastic can ensure a constant pressing force after expansion and recovery, thereby ensuring the stability of the inductive side key in the mounting groove 310 (memory)
  • the pressing force of the foam on the inner wall of the mounting groove 310 is easily affected by the difference of the air pressure inside and outside the memory foam.
  • the air pressure difference between the inside and the outside changes, the change of the pressing force of the memory foam on the inner wall of the mounting groove 310 easily affects the inductance.
  • the stability of the side key in the mounting groove 310 in addition, the plastic also has better wear resistance, so that the fixing table 22 is not easily damaged when the inductive side key is assembled (the memory foam is easily damaged by the crucible).
  • the fixing table 22 can also be made of soft rubber (such as rubber, silicone, etc.). Compared with the memory foam, the soft rubber also has better elasticity and wear resistance, and can be immediately expanded and restored after being squeezed, which can shorten the time for the support plate 2 to be inserted into the mounting groove 310, improve assembly efficiency, and is soft.
  • the glue can ensure a constant pressing force after the expansion and recovery, thereby ensuring the stability of the inductive side key in the mounting groove 310.
  • the fixing table 22 When the fixing table 22 is a soft rubber, the fixing table 22 can be fixed on the supporting plate 2 by a two-color injection molding process, so that the soft fixing table 22 and the hard supporting plate 2 can form a different mechanical property, different tactile sensations and visions.
  • the two-color injection molding process also called sequential stack injection molding, is a process of superimposing a more elastic material on a rigid substrate, which finally forms a polymer composition with different mechanical properties, different touch and vision and is permanently connected. The product.
  • the embodiment of the present invention further provides a terminal device, including a metal frame 300.
  • the metal frame 300 is provided with a mounting slot 310 along the thickness direction of the terminal device.
  • the fixing table 22 of the inductive side key 100 is closely fitted to the inner wall of the mounting groove 310.
  • the inductive side key 100 inserted in the mounting slot 310 in the terminal device in the embodiment of the present invention is the same as the inductive side key 100 in any of the above embodiments, the two can solve the same technical problem, and The same expected effect is achieved; when the pressing is required, the finger presses the metal frame 300 corresponding to the mounting groove 310, and the pressing of the finger causes the metal frame 300 to be slightly deformed, and the deformation causes the side wall of the mounting groove 310 to approach the flexible circuit board 1
  • the upper inductor coil and the inductor coil can recognize whether or not the metal object is close, that is, whether the press is generated or not, and thereby determine whether there is a button action.
  • the fixing table 22 of the inductive side key 100 is closely matched with the inner wall of the mounting groove 310, and the tight fit may be an interference fit or a zero clearance fit.
  • the metal frame 300 is easily twisted during use of the terminal device such as a mobile phone.
  • the mobile phone is installed in a tight pocket, and the person is prone to twist when walking, and the torsional deformation of the metal frame 300 is easy to make the flexible circuit.
  • the inductance coil in the board 1 is erroneously judged as a pressing operation.
  • the distance between the side surfaces of the flexible circuit board 1 near the inner wall of the mounting groove 310 and the inner wall of the mounting groove 310 in the thickness direction of the board body 21 is along the thickness direction of the board body 21. Equal and smaller than the maximum sensing distance of the flexible circuit board 1.
  • the deformation of the metal frame 300 increases the distance between the two sides of the flexible circuit board 1 to the inner wall of the mounting slot 310, and the distance from the inner wall of the other side of the mounting slot 310 decreases, and the distance is reduced.
  • the small amount and the distance increase are equal, so that the effect of the metal frame 300 being twisted can be offset.
  • the inductance coil senses a distance from the inner wall of the mounting groove 310, the non-pressing action can be judged. Therefore, the problem that the metal frame 300 is easily distorted when twisted is solved.
  • a chamfer 311 is formed at the insertion opening of the mounting groove 310.
  • the area of the notch of the mounting groove 310 can be increased, so that the notch area of the mounting groove 310 is larger than the area of the end of the inductive side key 100 near the notch.
  • the inductive side key 100 is easily opposed to the slot and inserted into the mounting slot 310, thereby facilitating shortening of the alignment time of the inductive side key 100 and the mounting slot 310.
  • At least one end of the plate body 21 in the longitudinal direction is provided with a detaching opening 24, and one end of the detaching opening 24 and the inner wall of the mounting groove 310 are provided.
  • a gap is formed between the parts to allow the removal tool to extend.
  • the tool such as the tweezers can clamp the support plate 2 from the mounting groove 310 by clamping the detaching port 24 on the plate body 21, thereby facilitating the removal and replacement of the support plate 2 and the flexible circuit board 1.

Landscapes

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

Abstract

La présente invention concerne le domaine technique des touches à pression, et concerne par là même une touche latérale inductive et un dispositif terminal. Dans le processus où la touche est insérée dans une rainure d'installation, une carte de circuit imprimé souple ne se déforme pas facilement. La touche latérale inductive fournie par la présente invention comprend une plaque de support et une carte de circuit imprimé souple pourvue d'une bobine inductive. La plaque de support comprend un corps de plaque constitué d'un matériau isolant dur, et la carte de circuit imprimé souple est fixée à au moins une surface latérale du corps de plaque ; le corps de plaque est pourvu d'une table de fixation constituée d'un matériau élastique sur une surface de celle-ci destinée à fixer la carte de circuit imprimé souple, et l'épaisseur de la table de fixation est supérieure à celle de la carte de circuit imprimé souple. La présente invention peut être utilisée pour des touches à pression.
PCT/CN2017/090654 2017-03-01 2017-06-28 Touche latérale inductive et dispositif terminal Ceased WO2018157530A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201780053969.7A CN109644214B (zh) 2017-03-01 2017-06-28 一种电感式侧键及终端设备

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CN201710118344.6 2017-03-01
CN201710118344 2017-03-01

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WO2018157530A1 true WO2018157530A1 (fr) 2018-09-07

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111553330B (zh) * 2020-06-23 2025-03-18 昆山丘钛生物识别科技有限公司 侧键指纹模组、终端及侧键指纹模组的制造方法

Citations (4)

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US20140140021A1 (en) * 2012-11-16 2014-05-22 Apple Inc. Component Mounting Structure With Flexible Jumper
US20150141084A1 (en) * 2013-11-21 2015-05-21 Lg Electronics Inc. Mobile terminal and method forming case of the same
CN105430130A (zh) * 2015-12-22 2016-03-23 广东欧珀移动通信有限公司 一种手机侧键结构及手机
CN205622615U (zh) * 2016-03-17 2016-10-05 峰范（北京）科技有限公司 金属触控按键结构

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CN202713437U (zh) * 2012-08-21 2013-01-30 广东欧珀移动通信有限公司 一种手机的侧键结构
CN105491195B (zh) * 2015-12-30 2019-04-26 努比亚技术有限公司 一种压力触控模组的固定装置

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US20140140021A1 (en) * 2012-11-16 2014-05-22 Apple Inc. Component Mounting Structure With Flexible Jumper
US20150141084A1 (en) * 2013-11-21 2015-05-21 Lg Electronics Inc. Mobile terminal and method forming case of the same
CN105430130A (zh) * 2015-12-22 2016-03-23 广东欧珀移动通信有限公司 一种手机侧键结构及手机
CN205622615U (zh) * 2016-03-17 2016-10-05 峰范（北京）科技有限公司 金属触控按键结构

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CN109644214B (zh) 2020-07-28

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