CN213025850U - Key structure and sound box - Google Patents

Abstract

The application belongs to the technical field of electronic products, and particularly relates to a key structure and a sound box, wherein the key structure comprises a top cover, a circuit board, a conducting strip and a spring thimble, a touch area is arranged on the outer arc surface of the top cover, the conducting strip is attached to the inner arc surface of the top cover, the conducting strip is arranged opposite to the touch area, the circuit board is arranged in the top cover, a first end of the spring thimble is connected with the circuit board, the end surface of a second end of the spring thimble is abutted against the conducting strip, the end surface of the second end of the spring thimble is an abutting arc surface, and the concave-convex direction of the abutting arc; the cambered surface is contacted with the cambered surface between conducting strip and the butt cambered surface, and its area of contact is big, and the contact is inseparable, and touch-sensitive stability is good, in addition, is provided with the spring in the spring thimble, under the elastic force of spring to guarantee that the butt cambered surface can stabilize the butt on the conducting strip furtherly, improved the stability of contact and touch-sensitive stability.

Description

Key structure and sound box

Technical Field

The application belongs to the technical field of electronic products, and particularly relates to a key structure and a sound box.

Background

At present, the key is mainly pressed in the following two ways: firstly, the key function is realized by touching the switch lightly, but the key function is realized by touching the switch lightly and adding the key in the field of the sound box, so that the problems that the switch handle is touched lightly and the key is easy to generate vibration sound when music is played can be caused, and sound can be generated when the switch is touched lightly to influence the user experience; secondly, the key function is realized by a touch mode, but the mode is basically established on the basis of a plane to realize the key function, namely, the touch surface is arranged parallel to the PCB, the existing sound box is mostly spliced by cambered surfaces, the appearance is attractive, but the touch key function is realized on the cambered surfaces, and the realization of good touch induction performance is difficult.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a button structure and audio amplifier, aim at solving the technical problem that realize touch-control button function on the cambered surface that is difficult to among the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the utility model provides a key structure, includes top cap, circuit board, conducting strip and spring thimble, the extrados of top cap is equipped with the touch-control region, the conducting strip laminate in on the intrados of top cap, the conducting strip with the touch-control region is just to setting up, the circuit board install in the top cap, the first end of spring thimble with the circuit board is connected, the terminal surface of spring thimble second end support tightly in on the conducting strip, the terminal surface of spring thimble second end is the butt cambered surface, the unsmooth direction of butt cambered surface with the unsmooth direction of intrados is the same.

Optionally, the abutment arc surface is a hemispherical surface.

Optionally, the diameter of the hemispherical surface ranges from 0.9mm to 1 mm.

Optionally, the thickness of the conductive sheet ranges from 0.1mm to 0.2 mm.

Optionally, the inner arc surface is provided with a containing groove, and the conducting strip is attached to the bottom surface of the containing groove.

Optionally, the conductive sheet is attached to the intrados surface by a conductive adhesive.

Optionally, the conductive sheet is a conductive cloth or a conductive gold foil.

Optionally, the distance between the contact point of the abutting arc surface and the conducting strip and the circuit board ranges from 5mm to 20 mm.

Optionally, the top cover is a plastic top cover.

One or more technical solutions in the key structure provided by the present application have at least one of the following technical effects: the touch area of this button structure's top cap sets up on the extrados of top cap, the touch area is the arcface form promptly, in addition, the conducting strip laminating is on the intrados of top cap, the conducting strip changes along with the change of intrados radian, make the conducting strip also be the arcface form, so after the butt cambered surface that stretches out towards the evagination on the spring thimble second end supports tightly on the conducting strip that is the arcface form, it is the cambered surface and cambered surface contact between the two like this, its area of contact is big, the contact is inseparable, touch-sensitive stability is good, in addition, be provided with the spring in the spring thimble, under the elastic force of spring, thereby guarantee that the butt cambered surface can stabilize the butt on the conducting strip, furthermore, the stability of contact has been improved, thereby solved the problem that touch-sensitive stability is not good enough because of the contact on the.

Another technical scheme adopted by the application is as follows: a sound box comprises the key structure.

The utility model provides a loudspeaker box, owing to adopted foretell button structure, the contact between its conducting strip and the spring thimble is that cambered surface and cambered surface contact, its area of contact is big, the contact is inseparable, touch-sensitive stability is good, in addition, be provided with the spring in the spring thimble, under the elastic force of spring, thereby guarantee that the terminal surface of spring thimble second end can stabilize the butt on the conducting strip, furthermore, the stability of contact has been improved, thereby the problem that touch-sensitive stability is not good that the touch-sensitive stability that leads to because of the contact is good inadequately on the current cambered surface has been solved to the touch-control

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a viewing angle of a key structure according to an embodiment of the present disclosure.

Fig. 2 is a sectional view taken along line a-a in fig. 1.

Fig. 3 is a partially enlarged view of fig. 2 at B.

Fig. 4 is a schematic structural diagram of another view angle of the key structure shown in fig. 1.

Fig. 5 is an exploded view of the key structure shown in fig. 1.

Wherein, in the figures, the respective reference numerals:

10-top cover 11-extrados 12-intrados

13-mounting groove 14-mounting cavity 20-circuit board

21-socket 22-mounting hole 23-LED lamp

30-conducting strip 40-spring thimble 41-butt cambered surface

111-touch area 121-accommodating groove 131-communicating through hole

132-accommodating through hole 141-screw column 142-screw

1111-icon.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-5 are exemplary and intended to be used to illustrate the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1 to 5, in an embodiment of the present application, a key structure is provided, which includes a top cover 10, a circuit board 20, a conductive sheet 30 and a pogo pin 40, wherein an outer arc surface 11 of the top cover 10 is provided with a touch region 111, i.e., the touch region 111 is also an arc surface, and is not parallel to the circuit board 20 naturally; further, the conducting strip 30 is attached to the inner arc surface 12 of the top cover 10, and the conducting strip 30 is disposed opposite to the touch control area 111, wherein, it should be noted that the outer arc surface 11 and the inner arc surface 12 are the inner and outer surfaces of the top cover 10, and the shapes and sizes thereof are substantially the same, further, the circuit board 20 is installed in the top cover 10, the first end of the spring thimble 40 is connected with the circuit board 20, the end surface of the second end of the spring thimble 40 abuts against the conducting strip 30, the end surface of the second end of the spring thimble 40 is the abutting arc surface 41, and the concave-convex direction of the abutting arc surface 41 is the same as the concave-convex direction of; specifically, when the inner arc surface 12 is a convex arc surface, the abutting arc surface 41 is also a convex arc surface; when the inner arc surface 12 is a concave arc surface, the abutting arc surface 41 is also a concave arc surface, so that when the abutting arc surface 41 contacts with the conducting strip 30, the contact area between the abutting arc surface 41 and the conducting strip is large, and the contact stability and reliability are good.

Specifically, in the key structure of the embodiment of the present application, the touch area 111 is disposed on the outer arc surface 11 of the top cover 10, namely, the touch area 111 is also arc-shaped, and in addition, the conductive sheet 30 is attached to the inner arc surface 12 of the top cover 10, the conductive sheet 30 changes with the change of the arc of the inner arc surface 12, so that the conducting plate 30 is also arc-shaped, when the contact arc 41 protruding outwards on the second end of the spring thimble 40 abuts against the arc-shaped conducting plate 30, the arc is contacted with the arc, the contact area is large, the contact is tight, the stability of touch induction is good, in addition, a spring is arranged in the spring thimble 40, under the elastic force of the spring, the abutting cambered surface 41 can be ensured to be stably abutted on the conducting strip 30, further, the contact stability is improved, therefore, the problem that touch induction stability is poor due to poor contact in the conventional arc surface touch control is solved.

In this embodiment, the key structure is suitable for the sound box, when the key structure is used specifically, the top cover 10 is installed on the casing of the sound box, the circuit board 20 is electrically connected to the controller in the sound box, when the user touches the touch area 111, the conducting strip 30 senses an electrical signal and transmits the electrical signal to the controller through the spring thimble 40 and the circuit board 20, and the controller receives the signal, so as to control the operations of volume adjustment, song switching, sound box switch and the like of the sound box. It should be noted that when the user touches the touch area 111, the conductive sheet 30 senses an electrical signal, and the specific principle is the existing capacitive sensing principle.

In this embodiment, referring to fig. 2, 4 and 5, the bottom of the top cover 10 is provided with an installation cavity 14 having an opening, the inner arc surface 12 is an inner wall surface of the installation cavity 14, a screw post 141 is disposed in the installation cavity 14, the circuit board 20 is installed on the screw post 141 through a screw 142 and locked on the screw post 141, and seals the opening of the installation cavity 14, the installation structure is simple, wherein the number of the screw posts 141 may be multiple, and the screw posts are arranged along the circumferential direction of the circuit board 20, so as to ensure the stable reliability of the installation of the circuit board 20; the circuit board 20 is provided with an LED lamp 23, wherein the LED lamp 23 can be turned on and off by touch control of the touch area; a socket 21 is disposed on a back surface of the circuit board 20 facing away from the mounting cavity 14, and the socket 21 is connected to a controller in the sound box through a Flexible Flat Cable (FFC) so as to electrically connect the circuit board 20.

In the present embodiment, referring to fig. 1, fig. 2 and fig. 4, the outer arc surface 11 is distributed along the circumferential direction of the top surface of the top cover 10, the middle of the top surface is provided with an installation groove 13, and a display device and other components can be installed in the installation groove 13, so as to display the use state of the sound box, some prompt information and the like in real time, the sound box has more diversified and intelligent functions, and the groove ground of the installation groove 13 is provided with a communication through hole 131 for communicating the installation cavity 14, and the communication through hole 131 can allow a connection wire between the display device and the circuit board 20 to pass through, thereby preventing the connection wire from being exposed and having; the bottom surface of the mounting groove 13 is provided with an accommodating through hole 132, and the LED lamp 23 is positioned in the accommodating through hole 132, so that light rays emitted by the LED lamp 23 can conveniently irradiate out of the top cover 10; the number of the touch areas can be multiple, the touch areas are arranged on the periphery of the top cover 10 at intervals, the appearance of the whole loudspeaker box is more concise and attractive, in addition, icons 1111 used for displaying functions are further arranged in the touch areas, the icons 1111 can be square, circular or other shapes, the specific shapes of the icons 1111 can be set according to the functions, so that touch control is more striking, mistaken touch is effectively avoided, and the specific shapes are not limited.

In another embodiment of the present application, referring to fig. 3, the abutting arc surface 41 of the key structure is provided as a hemisphere surface. Specifically, the end surface of the second end of the spring thimble 40 is a hemispherical surface, and the structure of the spring thimble is regular, so that the spring thimble is stably and reliably in contact with the conducting strip 30, and the touch sensing stability can be further improved.

In another embodiment of the present application, referring to fig. 3, the diameter of the hemisphere of the key structure is provided in a range of 0.9mm to 1 mm. Specifically, the diameter D of the hemispherical surface may be 0.9mm, 0.91mm, 0.92mm, 0.93mm, 0.94mm, 0.95mm, 0.96mm, 0.97mm, 0.98mm or 1mm, and the diameter D of the hemispherical surface is set within the above range, so that the end surface of the spring thimble 40 can have a proper contact area with the electric conduction, the conductive sheet 30 and the spring thimble 40 can be in good contact, and the stable reliability of touch sensing is good; if the diameter D of the hemispherical surface is too large, the overall structure is large, and resource waste is caused.

In another embodiment of the present application, referring to fig. 3, the conductive sheet 30 of the key structure is provided to have a thickness ranging from 0.1mm to 0.2 mm. Specifically, the thickness H of the conductive sheet 30 may be 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, 0.15mm, 0.16mm, 0.17mm, 0.18mm, 0.19mm, or 0.2mm, and the thickness H of the conductive sheet 30 is set within the above range, which has good structural stability, and may also be closely attached within the inner arc surface 12 and adapted to the radian of the inner arc surface 12; if the thickness H of the conducting strip 30 is too small, the conducting strip 30 is thin and is easy to be broken and damaged by the elastic thimble; if the thickness H of the conductive sheet 30 is too large, the flexibility of the conductive sheet 30 is poor, the conductive sheet 30 cannot be tightly attached to the inner arc surface 12, and the touch sensing sensitivity is poor.

In another embodiment of the present application, referring to fig. 3 and 5, the inner arc surface 12 of the key structure is provided with a receiving groove 121, and the conductive sheet 30 is attached to the bottom surface of the receiving groove 121. Specifically, the accommodating groove 121 provides an installation space for the conductive sheet 30, and meanwhile, the conductive sheet 30 is limited in the accommodating groove 121, and the conductive sheet 30 cannot move, so that the touch area 111 and the conductive sheet 30 are arranged right opposite to each other, and the sensitivity of touch sensing is ensured. It should be noted that the bottom surface of the accommodating groove 121 is also arc-shaped and has the same shape as the touch area 111.

In another embodiment of the present application, the conducting strip 30 of the key structure is provided to be adhered to the intrados surface 12 by a conducting adhesive; specifically, on the one hand, the conducting strip 30 is adhered to the inner arc surface 12 through the conducting resin, the installation mode is simple, the production and the manufacture are facilitated, and on the other hand, the conducting resin is filled between the inner arc surface 12 and the conducting strip 30, so that the conductivity of the conducting strip 30 can be improved, and the sensitivity of touch sensing is improved.

In another embodiment of the present application, the conductive sheet 30 of the key structure is provided as a conductive cloth; specifically, electrically conductive cloth is soft, and electrically conductive cloth can closely laminate on intrados 12 to along with the radian of intrados 12 changes, demonstrate the radian unanimous with intrados 12, thereby guarantee with the in close contact of elasticity thimble contact, and then guarantee touch-control response stability.

In another embodiment of the present application, the conductive sheet 30 of the key structure is provided as a conductive gold foil. Specifically, on one hand, the conductive gold foil can be tightly attached to the inner arc surface 12 and changes with the radian of the inner arc surface 12 to present a radian consistent with that of the inner arc surface 12, so that the tight contact with the elastic thimble is ensured, and the touch sensing stability is further ensured; on the other hand, the conductive gold foil has good conductivity, and the sensitivity of touch sensing is effectively improved.

In another embodiment of the present application, referring to fig. 3, the distance from the contact point of the contact arc surface 41 of the key structure and the conductive sheet 30 to the circuit board 20 is provided in a range of 5mm to 20 mm. Specifically, the distance L from the contact point of the abutting arc surface 41 and the conducting strip 30 to the circuit board 20 may be 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm, and if the distance L is set too small, the length of the spring thimble 40 is too small, which is difficult to manufacture and has high manufacturing cost; if the distance L is set too large, the length of the pogo pin 40 is too long, and the pogo pin 40 is easily broken and damaged.

In the present embodiment, referring to fig. 3, 4 and 5, the circuit board 20 is provided with a mounting hole 22, and the first end of the spring thimble 40 is fixed in the mounting hole 22 in a penetrating manner, so that the mounting structure is simple in mounting operation and convenient to manufacture; in addition, the spring thimble 40 is made of brass, and the outer surface of the spring thimble 40 is plated with gold, so that the conductivity of the spring thimble 40 is good, and the sensitivity of touch sensing is greatly improved.

In another embodiment of the present application, the top cover 10 of the key structure is provided as a plastic top cover 10. The top cover 10 is made of plastic materials, so that the manufacturing cost is low, and the appearance is attractive; preferably, the plastic material is PC (Polycarbonate), ABS (acrylic Butadiene Styrene: Acrylonitrile-Butadiene-Styrene copolymer) or PMMA (polymethyl methacrylate).

In another embodiment of the present application, a sound box is provided, which includes the above-mentioned key structure.

Specifically, the audio amplifier of this application embodiment, owing to adopted foretell button structure, the contact between its conducting strip 30 and the spring thimble 40 is that the cambered surface contacts with the cambered surface, its area of contact is big, the contact is inseparable, touch-sensitive stability is good, in addition, be provided with the spring in the spring thimble 40, under the elastic force of spring, thereby guarantee that the terminal surface of spring thimble 40 second end can stabilize the butt on conducting strip 30, furthermore, the stability of contact has been improved, thereby the problem that touch-sensitive stability is not good because of the contact is good enough and lead to on the current cambered surface of touch-control has been solved.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. A key structure, characterized by: the spring thimble structure comprises a top cover, a circuit board, a conducting strip and a spring thimble, wherein a touch area is arranged on an outer arc surface of the top cover, the conducting strip is attached to an inner arc surface of the top cover, the conducting strip is opposite to the touch area, the circuit board is arranged in the top cover, a first end of the spring thimble is connected with the circuit board, a terminal surface of a second end of the spring thimble is tightly abutted to the conducting strip, the terminal surface of the second end of the spring thimble is an abutting arc surface, and the concave-convex direction of the abutting arc surface is the same as the concave-convex direction of the inner arc surface.

2. The key structure according to claim 1, wherein: the butt cambered surface is a hemispherical surface.

3. The key structure according to claim 2, wherein: the diameter range of the hemispherical surface is 0.9 mm-1 mm.

4. The key structure according to claim 1, wherein: the thickness range of the conducting strip is 0.1 mm-0.2 mm.

5. The key structure according to claim 1, wherein: the inner arc surface is provided with a containing groove, and the conducting strip is attached to the bottom surface of the containing groove.

6. The key structure according to claim 1, wherein: the conducting strip is adhered to the inner arc surface through conducting adhesive.

7. The key structure according to claim 1, wherein: the conducting strip is conducting cloth or conducting gold foil.

8. The key structure according to claim 1, wherein: the distance between the contact point of the abutting arc surface and the conducting strip and the circuit board ranges from 5mm to 20 mm.

9. The key structure according to claim 1, wherein: the top cover is a plastic top cover.

10. A sound box is characterized in that: comprising a key structure according to any one of claims 1 to 9.

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