CN107870650B

CN107870650B - Volume adjusting mechanism and electronic device with same

Info

Publication number: CN107870650B
Application number: CN201610845008.7A
Authority: CN
Inventors: 黄伟文
Original assignee: Shenzhen Yuzhan Precision Technology Co ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Shenzhen Yuzhan Precision Technology Co ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2016-09-23
Filing date: 2016-09-23
Publication date: 2020-06-26
Anticipated expiration: 2036-09-23
Also published as: CN107870650A

Abstract

The utility model provides a volume adjustment mechanism, which comprises a knob, the encoder, sleeve and elastic component, the knob includes the pivot and locates the transfer line of pivot one end, the elastic component is the space frame structure, the encoder is acceptd in the elastic component, the elastic component is fixed in the pivot unsettled with unsettled encoder, the axle core of encoder is equipped with the pivot hole, the transfer line is acceptd in the pivot hole in order to end with the axle core and rotate and be connected, the sleeve is including leading portion and two extensions of locating leading portion one end, two extensions set up relatively, the pivot is rotationally located leading portion, the encoder is spacing between two extensions along with the elastic component, it rotates the output signal in order to change the encoder to rotate the relative encoder of axle core. The volume adjusting mechanism utilizes the sleeve and the elastic piece to suspend the encoder under the knob, so that the encoder is conveniently and positively butted with the knob.

Description

Volume adjusting mechanism and electronic device with same

Technical Field

The present invention relates to a volume adjustment mechanism and an electronic device having the same.

Background

Conventional electronic devices, such as handheld players, audio/video devices, etc., utilize an adjustment mechanism to adjust the volume or audio frequency. The volume adjustment mechanism generally includes a knob and an encoder, which is typically secured to an integrated circuit board of the electronic device by conventional soldering. However, with the welded attachment, the encoder is prone to misalignment resulting in a failure to mate with the knob and the difficulty in turning the knob due to misalignment interference and poor adjustment sensitivity.

Disclosure of Invention

Accordingly, there is a need for a volume adjustment mechanism that can improve adjustment sensitivity and facilitate alignment and docking, and an electronic device using the volume adjustment mechanism.

A volume adjusting mechanism comprises a knob and an encoder, wherein the volume adjusting mechanism further comprises a sleeve and an elastic piece, the knob comprises a rotating shaft and a transmission rod, the transmission rod is arranged at one end of the rotating shaft, the elastic piece is of a three-dimensional frame structure, the encoder is contained in the elastic piece, the elastic piece is fixed on the rotating shaft so as to suspend the encoder in the air, the elastic piece comprises a clamping ring, two supporting sections and two first connecting sections, the clamping ring is provided with an opening, the two supporting sections are respectively connected with the two ends of the opening of the clamping ring through the two first connecting sections, a clamping groove is arranged on the outer peripheral surface of the rotating shaft, the clamping ring is clamped in the clamping groove, the clamping ring is positioned above the encoder, a rotating shaft hole is formed in a shaft core of the encoder, the transmission rod is contained in the rotating shaft hole so as to be connected with the shaft core in, the sleeve comprises a guiding portion and two extending portions, the two extending portions are arranged at one end of the guiding portion, the two extending portions are arranged oppositely, the rotating shaft is rotatably positioned in the guiding portion, the encoder and the elastic piece are limited between the two extending portions, and the knob is rotated to drive the shaft core to rotate relative to the encoder so as to change an output signal of the encoder.

An electronic device comprises a shell and an integrated circuit board contained in the shell, wherein the electronic device further comprises the volume adjusting mechanism, a fixing hole is formed in the shell, a guide portion of a sleeve is fixed in the fixing hole, and an encoder is electrically connected with the integrated circuit board through a flat cable.

Compared with the prior art, the volume adjusting mechanism provided by the invention has the advantages that the encoder is suspended and fixed under the knob by utilizing the combination of the sleeve and the elastic piece, so that the encoder does not need to be welded and fixed, the guide and butt joint of the encoder and the knob is facilitated, and the adjustment sensitivity is improved.

Drawings

Fig. 1 is a schematic perspective view of an electronic device according to an embodiment of the invention.

Fig. 2 is a perspective view of the adjustment mechanism shown in fig. 1.

Fig. 3 is an exploded schematic view of the adjustment mechanism shown in fig. 2.

Fig. 4 is an exploded view of the adjustment mechanism shown in fig. 2 from another angle.

Fig. 5 is an enlarged perspective view of the elastic member of the adjustment mechanism shown in fig. 3.

Fig. 6 is a schematic cross-sectional view of the electronic device shown in fig. 1 along line VI-VI.

Description of the main elements

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

It will be understood that 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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, a volume adjustment mechanism 100 according to an embodiment of the invention is applied to an electronic device 200 for adjusting the volume or audio frequency of the electronic device 200. The electronic device 200 may be an MP3, an MP4, a lossless portable player, a speaker, or the like. In this embodiment, the electronic device 200 is a lossless portable player.

The electronic device 200 includes a housing 210 and an integrated circuit board 220. The integrated circuit board 220 is accommodated in the housing 210. The electronic device 200 of the present embodiment should further include other components, such as a decoder, a processor, a memory, etc., disposed in the housing 210, and for the sake of brevity, the description thereof is omitted. The volume adjustment mechanism 100 is fixed on the housing 210 and electrically connected to the integrated circuit board 220 for adjusting the volume of the electronic device 200. Specifically, a fixing hole 211 is formed in the housing 210, and the volume adjustment mechanism 100 is installed in the fixing hole 211.

Referring to fig. 1 and 2, the volume adjusting mechanism 100 includes a knob 10, a sleeve 20, an encoder 30, and an elastic member 40. The knob 10 is rotatably positioned in the fixing hole 211. The encoder 30 is suspended and fixed right below the knob 10 through the combination of the sleeve 20 and the elastic member 40, and is coaxial with the knob 10. The knob 10 comprises a transmission rod 13, a rotation shaft hole 311 is formed in the shaft core of the encoder 30, and the transmission rod 13 is accommodated in the rotation shaft hole 311 and is in rotation stopping connection with the rotation shaft hole 311. The user changes the output signal of the encoder 30 by rotating the knob 10, thereby changing the volume of the electronic device 200.

Referring to fig. 3 and 4, in the present embodiment, the knob 10 is integrally made of aluminum. The knob 10 includes a rotary head 11, a rotary shaft 12, and a transmission rod 13. The shaft 12 is formed to extend outward from the center of the bottom of the rotary head 11. The transmission rod 13 is further extended from one end of the rotation shaft 12 along the extending direction of the rotation shaft 12.

Specifically, the rotary head 11 includes an upper portion 111 and a lower portion 112. The upper part 111 and the lower part 112 are connected to each other, and a first groove 113 having a ring shape is formed at the connection thereof. In this embodiment, the upper portion 111 is substantially cylindrical. The lower portion 112 is formed to extend outward from a peripheral edge of one end of the upper portion 111. In the present embodiment, the lower portion 112 has a substantially circular ring shape. The diameter of the lower portion 111 is equal to the outer diameter of the upper portion 112. One end faces of the lower part 112 and the upper part 113 jointly enclose a cylindrical cavity 114 with one open end. The first groove 113 is formed to be recessed inward from the outer circumferential surface of the rotary head 11. In the present embodiment, the first concave groove 113 has a substantially circular ring shape.

A plurality of second grooves 115 are further formed on the outer circumferential surface of the rotating head 11. The second groove 115 is formed to be recessed inward from the outer circumferential surface of the rotary head 11. In this embodiment, the second groove 115 is substantially in the shape of a bar. The second groove 115 is perpendicular to the first groove 113. The second grooves 115 are uniformly distributed around the outer circumferential surface of the rotator head 11 to increase friction and improve tactile sensation when the rotator head 11 is rotated.

In the present embodiment, the rotation shaft 12 is provided at the center of the end surface of the upper portion 111 of the rotary head 11 near one end of the lower portion 112. Specifically, the rotation shaft 12 is formed to extend outward from the center of the end surface of the upper portion 111. In the present embodiment, the shaft 12 is substantially cylindrical. The shaft 12 is partially received in the cavity 114. The free end 121 of the shaft 12 extends from the opening of the cavity 114. An annular groove 122 is formed on the outer circumferential surface of the rotating shaft 12 near the free end 121 for fixing the elastic member 40. The engaging groove 122 is formed by being recessed inward from the outer circumferential surface of the rotating shaft 12. The card slot 122 is substantially circular.

The transmission rod 13 is coaxial with the rotating shaft 12. In the present embodiment, the transmission lever 13 is provided at a central portion of the free end 121 of the rotating shaft 12. The transmission rod 13 is further extended from the free end 121 of the rotating shaft 12 along the extending direction of the rotating shaft 12.

The driving lever 13 includes a stopper 131 and a connecting portion 132. The stopper 131 is disposed at the free end 121 of the shaft 12. The connecting portion 132 is disposed between the rotating shaft 12 and the braking portion 131, and is used for connecting the rotating shaft 12 and the braking portion 131. The stopper 131 is accommodated in the rotary shaft hole 311 of the encoder 30, and is connected to the rotary shaft hole 311 in a rotation stopping manner. In the present embodiment, the stopper 131 is substantially a regular hexagonal prism. It is understood that, in other embodiments, the stopper 131 may be a polygonal prism other than a regular hexagonal prism as long as it is adapted to the rotation shaft hole 311 of the encoder 30 to stop rotation of the shaft core of the encoder 30. In the present embodiment, the connecting portion 132 is substantially cylindrical. The diameter of the connecting portion 132 is smaller than the diameter of the shaft 12. It is understood that in other embodiments, the connecting portion 132 may be omitted.

In the present embodiment, the sleeve 20 is integrally made of stainless steel. The sleeve 20 is fixed in the fixing hole 211 of the housing 210, as shown in fig. 5, to guide and position the rotation shaft 12 of the knob 10. The sleeve 20 includes a stop portion 21, a pilot portion 22 and two extension portions 23. The stopping portion 21 is provided at one end of the guiding portion 22, and the two extending portions 23 are provided at the other end of the guiding portion 22.

Specifically, the abutting portion 21 is located outside the housing 210 and abuts against an outer wall of the housing 210. In the present embodiment, the stopper 21 is substantially cylindrical. The stopper 21 is accommodated in the cavity 114 of the knob 10. It is understood that in other embodiments, the stopper 21 may be omitted.

The guide portion 22 is formed to extend outward from the center of one end surface of the stopper portion 21. In the present embodiment, the guiding portion 22 is substantially cylindrical. The diameter of the guiding portion 22 is approximately equal to the diameter of the fixing hole 211 of the electronic device 200. The guiding portion 22 is disposed through and fixed in the fixing hole 211 of the electronic device 200. The diameter of the guide portion 22 is smaller than the diameter of the stopper portion 21.

The two extensions 23 are located inside the housing 210. Each of the extending portions 23 is formed to extend outward from an edge of the end surface of the guiding portion 22. The inner side surfaces of the two extending parts 23 are oppositely arranged to limit the encoder 30. The outer side surfaces of the two extending portions 23 are flush with the outer peripheral surface of the guiding portion 22.

The sleeve 20 is also provided with a locating hole 24. The positioning hole 24 is disposed in the center of the sleeve 20, and penetrates through the stopping portion 21 and the guiding portion 22 of the sleeve 20, so as to position the knob 10. In the present embodiment, the positioning hole 24 has a cylindrical shape. The diameter of the positioning hole 24 is slightly larger than that of the rotating shaft 12 of the knob 10.

The encoder 30 includes a main body 31, an upper case 32, and a support plate 33. The main body 31 is fixed to the support plate 33. The upper case 32 covers the main body 31 to protect the main body 31. The main body 31 is electrically connected to the integrated circuit 220 of the electronic device 200 by a flat cable (not shown).

Specifically, a shaft core is provided in the main body 31, and the shaft core is provided with the rotating shaft hole 311. The shape of the rotating shaft hole 311 is matched with the braking portion 131 of the transmission rod 13, so as to accommodate the braking portion 131 of the transmission rod 13, so that the transmission rod 13 rotates to drive the shaft core to rotate relative to the main body 31. In the present embodiment, the rotation shaft hole 311 has a substantially regular hexagonal shape.

The upper case 32 is provided with an insertion hole 321 at a position corresponding to the rotation shaft hole 311 for exposing the rotation shaft hole 311. The shape of the insertion hole 321 is matched with the shape of the connecting portion 132 of the transmission rod 13, so as to receive the connecting portion 132 of the transmission rod 13. In this embodiment, the insertion hole 3211 has a substantially circular shape.

The supporting plate 33 is provided with two through holes 331 for passing through the elastic member 40. It is understood that in other embodiments, the perforations 331 may be omitted. In other embodiments, the elastic member 40 may penetrate through the bottom of the supporting plate 33 from the side edge thereof to support the supporting plate 33.

Referring to fig. 4 and 5, the elastic member 40 is integrally formed. In the present embodiment, the elastic member 40 is formed by bending an elongated elastic material. The elastic member 40 includes a snap ring 41, two support sections 42, and two first connection sections 43. The snap ring 41 is generally in the form of an 2/3 ring. The snap ring 41 is provided with an opening 411. The two support sections 42 are connected to two ends of the opening 411 of the snap ring 41 through the two first connecting sections 43, respectively.

The snap ring 41 is located in the first plane 401. Two of the support sections 42 lie in a second plane 402. Two of the first connection segments 43 are located in the third plane 403. The first plane 401 and the second plane 402 are parallel to each other. The third plane 403 is perpendicular to the first plane 401 and the second plane 402. The snap ring 41, the two support sections 42 and the two first connecting sections 43 together form a three-dimensional frame, which accommodates the encoder 30 therein. In the present embodiment, the two support sections 42 are disposed parallel to each other, and the elastic member 40 is substantially rectangular parallelepiped. It is understood that in other embodiments, the resilient member 40 may have other shapes.

Specifically, when the encoder 30 is accommodated in the frame of the elastic member 40, the two support sections 42 are located right below the supporting plate 33 of the encoder 30 to support the encoder 30. The snap ring 41 is located above the upper shell 32 of the encoder 30 and is clamped in the clamping groove 122 of the rotating shaft 12 of the knob 10, so that the encoder 30 is suspended under the rotating shaft 12. The first connecting segment 43 is located at the side of the encoder 30.

Further, the elastic member 40 further includes two second connection segments 44. Each of the second connecting sections 44 is disposed between the first connecting section 43 and the snap ring 41, and is used for connecting the first connecting section 43 and the snap ring 41. The second connecting section 44 is located in the first plane 401. The second connecting sections 44 are arranged in parallel. The second connecting section 44 is further parallel to the support section 42.

Further, the elastic member 40 further includes a bending section 45. The two bending sections 45 are located in the first plane 401. In the present embodiment, each of the bending sections 45 is disposed between the first connecting section 43 and the second connecting section 44, and is used for connecting the first connecting section 43 and the second connecting section 44. It is understood that in other embodiments, the second connecting segment 44 may be omitted. That is, each of the bending sections 45 is disposed between the first connecting section 43 and the snap ring 41, and is used for connecting the first connecting section 43 and the snap ring 41.

Further, the elastic member 40 further includes two third connecting segments 46. The second third connecting section 46 is located in the first plane 401. The second third connecting sections 46 are parallel to each other and are respectively located at two sides of the snap ring 41. The third connecting section 46 is further parallel to the support section 42. In the present embodiment, each of the third connecting segments 46 is disposed between the first connecting segment 43 and the bending segment 45 for connecting the first connecting segment 43 and the bending segment. The third connecting section 46 is perpendicular to the first connecting section 43. It is understood that in other embodiments, the second connecting segment 44 may be omitted.

Furthermore, each of the supporting sections 42 is further provided with a supporting section 421. The holding section 461 is formed to protrude from the second plane 402 toward the first plane 401. The holding section 421 is substantially semicircular. When the encoder 30 is accommodated in the elastic member 40, the supporting section 421 supports against the supporting plate 33 to prevent the supporting section 42 from scratching the encoder 30.

Referring to fig. 4 and 6, when the volume adjustment mechanism 100 of the present invention is assembled:

fixing the sleeve 20 in the fixing hole 211 of the housing 210, and in operation, passing the extending portion 23 and the guiding portion 22 of the sleeve 20 through the fixing hole 211 from the outside of the housing 210 in sequence, and fixing the guiding portion 22 in the fixing hole 211;

the knob 10 is positioned in the positioning hole 24 of the sleeve 20. Specifically, the transmission rod 13 and the rotating shaft 12 of the knob 10 sequentially pass through the positioning hole 24 from one side of the stopping portion 21 of the sleeve 20 until the rotating head 11 of the knob 10 stops against the housing 210, and at this time, the stopping portion 21 of the sleeve 20 is completely accommodated in the cavity 114 of the knob 10;

the supporting section 42 of the elastic member 40 penetrates through the through hole 331 on the supporting plate 33 of the encoder 30, and the encoder 30 is accommodated in the frame of the elastic member 40, at this time, the supporting section 42 is located on one side of the supporting plate 33, which is opposite to the main body 31, the supporting section 421 supports against the supporting plate 33, and the snap ring 41 is located above the upper shell 32;

the snap ring 41 of the elastic member 40 is snapped into the snap groove 122 of the rotating shaft 12 of the knob 10, and the transmission rod 13 of the knob 10 is inserted and received in the insertion hole 321 and the rotating shaft hole 311 of the encoder 30, at this time, the encoder 30 and the elastic member 40 are received between the two extending portions 23 of the sleeve 20 and are limited by the two extending portions 23 to rotate.

In the operation of the volume adjustment mechanism 100 of the present invention:

the user rotates the rotary head 11 of the knob 10, because the braking portion 131 of the transmission rod 13 is connected with the rotation shaft hole 311 of the encoder 30 in a rotation stopping manner, and the main body 31 of the encoder 30 is limited by the two extending portions 23 of the sleeve 20, the shaft core of the encoder 30 is driven by the transmission rod 13 to rotate relative to the main body 31 of the encoder 30, so as to convert the rotation position or rotation amount into an analog or digital signal to be transmitted to the integrated circuit board 220 of the electronic device 200, thereby achieving the purpose of adjusting the volume.

Compared with the prior art, the volume adjusting mechanism 100 of the present invention utilizes the combination of the sleeve 20 and the elastic member 40 to suspend and fix the encoder 30 directly below the knob 10, so that the encoder 30 does not need to be welded and fixed. Meanwhile, the rotating shaft 12 of the knob 10 is coaxial with the shaft core of the encoder 30, so that the encoder 30 is in guiding butt joint with the rotating shaft 12 of the knob 10 in multiple degrees of freedom, multi-direction quick pick-and-place assembly of the encoder 30 is realized, the assembly flexibility is increased, the assembly efficiency is improved, and the adjustment sensitivity is improved.

It is understood that various other changes and modifications may be made by those skilled in the art based on the technical idea of the present invention, and all such changes and modifications should fall within the protective scope of the claims of the present invention.

Claims

1. A volume adjustment mechanism, includes knob and encoder, its characterized in that: the volume adjusting mechanism further comprises a sleeve and an elastic piece, the knob comprises a rotating shaft and a transmission rod, the transmission rod is arranged at one end of the rotating shaft, the elastic piece is of a three-dimensional frame structure, the encoder is accommodated in the elastic piece, the elastic piece is fixed on the rotating shaft to suspend the encoder in the air, the elastic piece comprises a clamping ring, two supporting sections and two first connecting sections, the clamping ring is provided with an opening, the two supporting sections are respectively connected with two ends of the opening of the clamping ring through the two first connecting sections, the outer peripheral surface of the rotating shaft is provided with a clamping groove, the clamping ring is clamped in the clamping groove and is positioned above the encoder, a shaft core of the encoder is provided with a rotating shaft hole, the transmission rod is accommodated in the rotating shaft hole to be connected with the shaft core in a rotation stopping manner, and the sleeve comprises a guiding part and two extending parts, the two extending parts are arranged at one end of the guiding part, the two extending parts are arranged oppositely, the rotating shaft is rotatably positioned in the guiding part, the encoder and the elastic part are limited between the two extending parts, and the knob is rotated to drive the shaft core to rotate relative to the encoder so as to change an output signal of the encoder.

2. The volume adjustment mechanism of claim 1, wherein: the sleeve is provided with a positioning hole, the positioning hole penetrates through the guiding portion, and the rotating shaft is rotatably contained in the positioning hole.

3. The volume adjustment mechanism of claim 2, wherein: each extension outwards extends from the edge of the terminal surface of leading portion and forms, two the medial surface of extension sets up relatively, two the lateral surface of extension with lead the peripheral surface of portion and flush.

4. The volume adjustment mechanism of claim 1, wherein: the clamping ring is positioned in a first plane and used for connecting the rotating shaft; the two support sections are positioned in a second plane and used for bearing the encoder; two of the first connection segments lie in a third plane, the first and second planes being parallel to each other, the third plane being perpendicular to the first and second planes.

5. The volume adjustment mechanism of claim 4, wherein: the two supporting sections are arranged in parallel, and the first connecting section is perpendicular to the clamping ring and the supporting sections.

6. The volume adjustment mechanism of claim 4, wherein: each support section is also provided with a propping section which is formed by protruding from the second plane to the first plane and props against the encoder.

7. The volume adjustment mechanism of claim 4, wherein: the encoder comprises a main body, an upper shell and a supporting plate, wherein the main body is fixed on the supporting plate, the upper shell cover is arranged on the main body and used for protecting the main body, the shaft core is arranged in the main body, and a jack is arranged on the upper shell corresponding to the rotating shaft hole and used for exposing the rotating shaft hole.

8. The volume adjustment mechanism of claim 7, wherein: the transmission rod comprises a braking portion and a connecting portion, the connecting portion is arranged between the rotating shaft and the braking portion, the braking portion is contained in the rotating shaft hole, and the connecting portion is contained in the jack.

9. The volume adjustment mechanism of claim 1, wherein: the knob further comprises a rotating head, and the rotating head is arranged at one end, far away from the transmission rod, of the rotating shaft.

10. An electronic device, including the shell and accept in integrated circuit board in the shell, its characterized in that: the electronic device further comprises the volume adjusting mechanism as claimed in any one of claims 1 to 9, wherein the housing is provided with a fixing hole, the guiding portion of the sleeve is fixed in the fixing hole, and the encoder is electrically connected with the integrated circuit board through a flat cable.