TW201348918A - Whirl for turning audio frequency - Google Patents

Abstract

A whirl for turning audio frequency is set on an electronic equipment. The electronic equipment comprises a front cover, a back cover, and a print circuit board set between the front cover and the back cover. The whirl comprises a spring, holding portion, a potentiometer, and a connecting rod. The spring includes a main body and a spring arm. A guiding groove is defined between the spring arm and the main body. The holding portion is set on the front cover. The potentiometer is solder on the print circuit board. The connecting rod having a rod is located on the potentiometer. The rod is set in the guiding groove. The potentiometer can rotate by the connecting rod driven by the spring arm.

Description

Audio adjustment knob

The present invention relates to an audio adjustment knob.

The audio playback device has higher requirements on the smoothness of the potentiometer knob operation, and when the rotation is not smooth, noise is easily generated and noise is generated. At present, professional potentiometer manufacturers have achieved higher precision requirements, such as metal shaft potentiometers or knob type potentiometers. However, since potentiometers are usually soldered and fixed on the circuit board, the shape design must meet different requirements due to product appearance requirements. The consumer's consumer taste needs to design different operating knobs on the outside of the product, so the design connection between the potentiometer and the external knob directly affects the operational feel and the potentiometer's smoothness.

In view of the above, it is necessary to provide an audio adjustment knob that can overcome the inconsistency of the soldering position of the potentiometer and the circuit board while ensuring that the peripheral matching gap is uniform when the knob is rotated.

An audio adjustment knob is disposed on an electronic device for adjusting audio. The electronic device includes a front cover, a rear cover, and a circuit board housed in a space defined by the front cover and the rear cover, the audio adjustment knob includes: a spring piece, including a body And a resilient arm disposed on the body, the resilient arm and the body having a guiding groove; a hand-held portion riveted with the elastic piece to be assembled on the front cover; a potentiometer, welded at the And a connecting rod fixed to the potentiometer, the connecting rod has a protruding post, the protruding post extends into the guiding groove, and the elastic arm is used for being applied to the handheld portion The external force is driven to drive the connecting rod to drive the potentiometer to rotate.

Compared with the prior art, the hand-held portion of the audio adjustment knob of the embodiment is assembled on the front cover by means of elastic staking, which ensures the consistency of the matching gap between the hand-held portion and the front cover; the elastic arm of the elastic piece controls the rotational force and can be reduced. The manufacturing precision of the parts ensures the consistency of the rotating force.

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 , FIG. 2 , FIG. 3 and FIG. 4 , the audio adjustment knob 40 provided in the embodiment of the present invention is disposed on the electronic device 100 for adjusting audio, for example, volume, channel (short wave, long wave or medium wave), and the like.

The electronic device 100 includes a front cover 10, a rear cover 20, and a circuit board 30 disposed in a space defined by the front cover 10 and the rear cover 20. The front cover 10 is provided with a plurality of circular tracks 11 for cooperating with the audio adjustment knob 40.

Of course, the number of circular tracks 11 varies according to the audio adjustment knob 40 required by the electronic device 100. For example, when only one audio adjustment knob 40 is required, there is a circular track 11.

The audio adjustment knob 40 includes a hand portion 41, a spring piece 42, a potentiometer 43, a link 44, and a screw 45.

The hand piece 41 and the elastic piece 42 are fitted to the front cover 10 by riveting. The opposite surfaces of the hand-held portion 41 respectively have an urging portion 410 and a clamping unit 411. The urging portion 410 faces the outside of the electronic device 100, and the clamping unit 411 faces the inside of the electronic device 100. The urging portion 410 has a "one" shape to facilitate the application of force, and the clamping unit 411 is a cylinder having a crack in the middle. Since the clamping unit 411 has a crack, the clamping unit 411 has a certain elasticity in the radial direction. The external force is applied to the hand-held portion 41 by the urging portion 410 to enable the hand-held portion 41 to rotate, and the clamping unit 411 has elasticity for riveting with the elastic piece 42.

Of course, in other embodiments, the urging portion 410 may also be other shapes that are convenient to apply force, for example, an "S" shape.

The elastic piece 42 includes a circular body 420 having three elastic arms 421 disposed at equal intervals. The extending direction of the elastic arms 421 is parallel to the circumferential direction of the body 420. Each of the elastic arms 421 has a spherical protrusion 422 which is located in the circular rail 11 of the front cover 10 to allow the elastic piece 42 to rotate relative to the front cover 10. A guiding groove 423 is formed between each of the elastic arms 421 and the body 420. In addition, the body 420 further has a through hole 424 that cooperates with the clamping unit 411 of the hand portion 41. The clamping unit 411 extends into the through hole 424 and then returns to the original body, so that the hand portion 41 and the elastic piece 42 are riveted and fixed. .

The potentiometer 43 is soldered to the circuit board 30, and has a rotating shaft 430 at the center thereof. The rotation of the rotating shaft 430 can drive the potentiometer 43 to rotate to realize audio adjustment.

The link 44 is fixed to the rotating shaft 430 of the potentiometer 43 by a screw 45 having a boss 440 facing the elastic piece 42, and the boss 440 is inserted into the guide groove 423 of the elastic piece 42.

Of course, the link 44 can also be secured to the potentiometer 43 by other means, such as welding.

The external force applied to the hand-held portion 41 is transmitted to the connecting rod 44 through the guiding groove 423 on the elastic piece 42 and the protruding post 440 of the connecting rod 44 to drive the rotating shaft 430 of the potentiometer 43 to rotate, and the potentiometer 43 is different during the rotating motion. The portion and the circuit board 30 thereby implement an audio adjustment function.

The hand-held portion 41 of the audio adjustment knob 40 of the present embodiment is assembled on the front cover 10 by means of the elastic piece 42 to ensure the uniformity of the matching gap between the hand-held portion 41 and the front cover 10; the elastic arm 421 of the elastic piece 42 controls the rotational force. The manufacturing precision of the part can be reduced, and the consistency of the rotating force can be ensured; the guiding groove 423 of the elastic piece 42 cooperates with the connecting rod 44 to drive the potentiometer 43 to overcome the positioning error of the potentiometer 43 when welding and the assembly error of the related parts.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

100. . . Electronic device

10. . . The front cover

11. . . track

20. . . Back cover

30. . . Circuit board

40. . . Knob

41. . . Handheld department

410. . . Force department

411. . . Clamping unit

42. . . shrapnel

420. . . Ontology

421. . . Elastic arm

422. . . Bulge

423. . . The guide groove

424. . . Through hole

43. . . Potentiometer

430. . . Rotating shaft

44. . . link

440. . . Tab

45. . . Screw

1 is a schematic diagram of an electronic device applying audio adjustment rotation according to an embodiment of the present invention.

2 is an exploded perspective view of an audio adjustment knob according to an embodiment of the present invention.

3 is an exploded perspective view showing another angle of the audio adjustment knob of the embodiment of the present invention.

4 is a schematic view of a spring piece in an audio adjustment knob according to an embodiment of the present invention.

100. . . Electronic device

10. . . The front cover

20. . . Back cover

30. . . Circuit board

40. . . Knob

41. . . Handheld department

410. . . Force department

42. . . shrapnel

43. . . Potentiometer

430. . . Rotating shaft

44. . . link

440. . . Tab

45. . . Screw

Claims (7)

An audio adjustment knob is disposed on an electronic device for adjusting audio. The electronic device includes a front cover, a rear cover, and a circuit board housed in a space defined by the front cover and the rear cover, the audio adjustment knob includes:
a spring piece comprising a body and a resilient arm disposed on the body, the guide arm having a guiding groove between the elastic arm and the body;
a hand-held portion riveted with the elastic piece to be assembled on the front cover;
a potentiometer soldered to the circuit board; and a connecting rod fixed to the potentiometer, the connecting rod having a stud, the stud extending into the guiding slot, the resilient arm being used for being An external force applied to the hand-held portion drives the movement of the link to drive the potentiometer to rotate. The audio adjustment knob of claim 1, wherein the link is fixed to the rotating shaft by a screw. The audio adjustment knob of claim 1, wherein the elastic arms are three and are equally spaced on the body. The audio adjustment knob of claim 1, wherein the elastic arm has a through hole, the handheld portion has a clamping unit, and the clamping unit cooperates with the through hole to make the handheld portion Riveting with the elastic piece. The audio adjustment knob of claim 1, wherein the potentiometer has a rotating shaft, and the connecting rod is fixed on the rotating shaft. The audio adjustment knob of claim 1, wherein the hand-held portion has a urging portion, and an external force is applied to the hand-held portion through the urging portion. The audio adjustment knob of claim 1, wherein the front cover has a rail, and the elastic arm has a protrusion, and the protrusion is received in the rail.