CN113703516A

CN113703516A - Volume adjusting knob

Info

Publication number: CN113703516A
Application number: CN202110885635.4A
Authority: CN
Inventors: 朱传刚; 崔国庆; 马奔腾; 陈娟; 钱坤; 周静; 王存峰
Original assignee: Chery Automobile Co Ltd
Current assignee: Chery Automobile Co Ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2021-11-26
Anticipated expiration: 2041-08-03
Also published as: CN113703516B

Abstract

The invention provides a volume adjusting knob, which is characterized in that: the bearing is arranged between the knob and the base body, the knob and the base body are respectively in interference fit with the inner ring and the outer ring or the outer ring and the inner ring of the bearing, the knob is further connected with a synchronous rotating adjusting ring, the adjusting ring and the elastic element arranged on the base body form interval circumferential damping type limiting blocking fit, and the adjusting ring and the switch electric contact or the optical coupling element arranged on the base body form electric connection or optical signal on-off fit. The invention provides a bearing support for the rotation of the knob, thereby obtaining excellent stability hand feeling, and combining the damping type limit blocking matching between the adjusting ring and the elastic element.

Description

Volume adjusting knob

Technical Field

The invention relates to an adjusting knob which is suitable for adjusting volume and the like.

Background

Most cars all have the volume knob for the volume size of control on-vehicle entertainment system, increase the volume and reduce the volume, but the operation of volume knob is felt, the operating force, the subjective impression of operation etc. all has very big promotion space, mainly there are the gear at present unclear, sound is unclear, the operating force can't be adjusted wantonly, the knob rocks the scheduling problem, along with people to the car quality, the requirement of becoming more and more meticulous is high, but also put forward higher requirement to parts such as operating switch, knob, develop to exquisite, comfortable and low-cost direction gradually.

The existing volume knob mainly has the following structures:

the first type is realized by adopting a rod type encoder or a hollow encoder, which are all standard generalized encoders, and the structure is relatively simple and easy to realize; the encoder is the most commonly used structure at present, but has serious defects, mainly because of being a standard product, the operating force can only be selected from the existing products, and can not be selected at will; the encoder has large shaking amount, is arranged on the whole vehicle, and the shaking amount of the knob assembly is very large and lacks of delicate feeling; the damping sense is strong, the sound is not crisp or clear, and the requirement on operability of a user cannot be met.

The second is realized by adopting a gear pin or a steel ball matched with a gear ring, the structure is relatively complex, and the requirement on size matching of internal parts is high; the gear pin scheme is relatively applied in many ways, but the gear pin scheme has poor hand feeling, is stiff, has a damping feeling in gears, and has no grade due to the fact that plastic feels sufficient during rotation.

The third is to adopt a metal bearing and an upper plastic ring and a lower plastic ring, wherein a plurality of steel balls are uniformly distributed in each plastic ring, and the metal bearing is matched with a spring piece to realize hand feeling, and the requirements on the precision of a die and the matching of the internal dimension are very strict. The third type has very good hand feeling, clear gears, clear sound and metallic texture, but has an abnormal and complicated internal structure, two plastic rings are arranged inside, a plurality of (for example, 30) steel balls are uniformly distributed in each plastic ring, the hand feeling is realized by matching spring pieces, the precision requirements on the plastic rings and the steel balls are very strict, the plastic rings and the steel balls are not easy to process and realize, the rejection rate is high, the cost is very high, and the popularization and the application are not easy

Disclosure of Invention

The invention aims to provide a novel volume adjusting knob which is good in hand feeling, moderate in operation force and strong in stability.

In order to achieve the purpose, the invention adopts the following technical scheme: a volume knob, characterized in that: the bearing is arranged between the knob and the base body, the knob and the base body are respectively in interference fit with the inner ring and the outer ring or the outer ring and the inner ring of the bearing, the knob is further connected with a synchronous rotating adjusting ring, the adjusting ring and the elastic element arranged on the base body form interval circumferential damping type limiting blocking fit, and the adjusting ring and the switch electric contact or the optical coupling element arranged on the base body form electric connection or optical signal on-off fit.

In the scheme, no matter what scheme is adopted to adjust the electrical parameters, namely no matter what scheme is adopted to adjust the contact type transposition of the variable resistor, or the opening and the blocking of the receiving and transmitting access of the optical signal of the optical coupler device is adopted, or other electric connection schemes, the switch adjustment is realized by rotating the knob.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIGS. 2 and 3 are schematic perspective views of two angles of the adjusting ring;

fig. 4 is a schematic perspective view of the elastic member.

Detailed Description

Referring to fig. 1, a bearing 30 is disposed between a knob 10 and a base 20, the knob 10 and the base 20 are in interference fit with an inner ring and an outer ring of the bearing 30 or the outer ring and the inner ring of the bearing 30, the knob 10 is further connected with a synchronously rotating adjusting ring 40, the adjusting ring 40 and an elastic element 50 disposed on the base 20 form a spaced circumferential damping type spacing blocking fit, and the adjusting ring 40 and a switch electrical contact or an optical coupling element disposed on the base 20 form an electrical connection or an optical signal on-off fit.

In the above solution, the knob 10 is rotatably supported by the bearing 30, so for the seat body 20, as long as the seat body 20 is fixed and relatively stable, the rotary support of the knob 10 is stable, that is, there is no shaking of the rotary shaft core, and meanwhile, the elastic element 40 applies moderate damping force and clear gear change to the knob 10 to block, so that the knob 10 can be selected at a required gear, and for the screwing adjustment such as a volume adjusting knob, the adjusting hand feeling is stable, the gears are clear, and the force is moderate.

Preferably, the ring-shaped knob 10 is sleeved on an outer ring of the bearing 30, and an inner ring of the bearing 30 is sleeved on an outer pipe wall of the tubular shaft 21 arranged on the seat body 20.

The knob 10 itself can be processed into an aesthetic design with a desirable appearance, the force arm of the torque applied to the knob 10 to drive the knob to rotate is large, the total torque resistance is easily enough for the operator, and the damping force can be realized by the matching scheme between the adjusting ring 40 and the elastic element 50 in the following scheme.

Preferably, the adjusting ring 40 includes an upper ring body 41, the upper ring body 41 is connected with the knob 10 in a synchronous rotation manner, a gear ring 42 is formed by convex teeth 421, the teeth of which are circumferentially spaced on the lower end surface of the upper ring body 41 and the teeth of which are axially located at the crests and the valleys, and the circumferential path of the convex teeth 421 is located between the transmitting end 61 and the receiving end 62 of the optical coupler transceiver 60.

As shown in fig. 2, the transmitting end 61 and the receiving end 62 of the optocoupler transceiver 60 are arranged inside and outside the gear ring 42 formed by the convex teeth 421, and when the convex teeth 421 pass between the transmitting end 61 and the receiving end 62, the optical signal is received once, so as to sequentially realize the electrical parameter blocking adjustment and control on the PCB.

The lower end of the knob 10 is connected with a step-shaped transition sleeve 70, a small diameter section 71 of the transition sleeve 70, which is positioned at the upper section, is sleeved on the upper section of the tubular shaft 21 in an empty manner, a large diameter section 72 at the lower part of the small diameter section 71 is sleeved on the outer ring of the bearing 30 in an interference manner, and the inner ring of the bearing 30 is sleeved on the middle-lower section of the tubular shaft 21 in a fixed manner.

In the above scheme, the tubular shaft 21 is connected with the base 20 or an independent part connected with the base 20, the inner ring of the bearing 30 is a stationary part fixedly connected with the tubular shaft 21 and the base 20, and the outer ring of the bearing 30 is connected with the transition sleeve 70 and the knob 10 in a synchronous rotation manner, so that the rotation shaft core of the knob 10 is stable, and the possibility of shaking the rotation shaft core of the knob 10 is eliminated.

Referring to fig. 1 and 2, the lower section 73 of the large-diameter section of the transition sleeve 70 on the lower end face side of the bearing 30 is fixedly connected with the adjusting ring 40, the inner peripheral wall of the upper ring body 41 of the adjusting ring 40 is provided with corrugated teeth 411, and the corrugated teeth 411 and the elastic element 50 form a circumferential damping type limit fit.

The adjusting ring 40 is coaxially and fixedly connected with the transition sleeve 70 and the knob 10 and then synchronously rotates along with the knob 10, and in the rotating process, the damping matching formed by the corrugated teeth 411 and the elastic element 50 realizes clear gear shift and moderate force.

As shown in fig. 3, the elastic element 50 is bent from an elastic strip into a U-shaped portion 51 and has an outwardly extending flange 52 at the notch, the elastic element 50 being fixedly connected to the tubular shaft 21 in the circumferential direction. The U-shaped portion 51 is used for forming a damping type blocking fit with the tooth surface portion of the corrugated tooth 411, more specifically, when the U-shaped portion 51 is matched with the wave troughs on the corrugated tooth 411, the U-shaped portion 51 is in a specific sound volume gear, when the two adjacent wave troughs are shifted, the U-shaped portion 51 and the wave crest of the corrugated tooth 411 form a damping type blocking fit, so that clear and accurate gear shifting sensing can be obtained, and the damping force can be determined by implementing optimization through the material and deformation characteristics of the elastic element 50. The extension type flange 52 arranged at the notch conveniently realizes the circumferential fixed connection of the elastic element 50 and the tubular shaft 21.

The preferred assembly is shown in fig. 1, the tubular shaft 21 has a circumferential wall 22 at its lower portion defining an annular groove 23 with an upward facing notch, the circumferential wall 22 has an opening 221, the flange 52 of the resilient member 50 is disposed in the annular groove 23, and the outer end of the U-shaped portion 51 is exposed to the outside of the opening 221. The elastic element 50 is reliably fixed at the joint of the opening 221 of the surrounding wall 22 and the annular groove 23, the convex bottom of the U-shaped part 51 protruding out of the opening 221 is matched with the corrugated teeth 411, the elastic element 50 has the deformation capacity to realize the damping type blocking matching applied to the corrugated teeth 411, and the preset deformation amount of the elastic element 50 ensures the basic stability of the position and the posture of the elastic element due to the restraint of the inner side wall of the annular groove 23 and the opening edge of the opening 221.

In order to ensure the convenience and stability of assembling the adjusting ring 40 with the transition sleeve 70, the outer peripheral wall of the upper ring body 41 of the adjusting ring 40 is provided with a limit fit which forms circumferential synchronous rotation and limits axial downward displacement with the inner wall of the lower section 73 of the large-diameter section. Specifically, as shown in fig. 2 and 3, the outer peripheral surface of the upper ring body 41 is provided with a concave portion 412, and a convex portion 413 is arranged at the circumferential side of the concave portion 412, the axial top of the concave portion 412 is provided with a convex portion 414, the inner wall of the lower section 73 of the large diameter section is provided with a convex portion extending to the side of the upper ring body 41, which is not shown in the figure, the convex portion implements axial relative displacement of the lower section 73 of the large diameter section and the upper ring body 41 between the convex portion 413 and the circumferential region of the convex portion 414, and then the convex portion rotates circumferentially relative to the concave portion 412 in a manner of being embedded and laid down, and the convex portion is in axial limit fit with the convex portion 414, at this time, the lower section 73 of the large diameter section and the upper ring body 41 implement circumferential synchronous connection and fit, the downward displacement trend of the upper ring body 41 is axially limited, and the upper end surface of the upper ring body 41 is pressed against the lower end surface of the outer ring of the bearing 30, thereby implementing fixation of the upper ring body 41.

In order to obtain clear gears and moderate damping force, the corrugated teeth 411 on the inner peripheral wall of the upper ring body 41 of the adjusting ring 40 are formed by sequentially arranging arc-surface units, and the curvature axes of the arc-surface units forming the corrugated teeth 411 are positioned outside the arc surfaces and are parallel to the axis direction of the knob 10. The contacting fit between the arc surface unit of the corrugated teeth 411 and the outer convex surface of the U-shaped portion 51 of the elastic element 40 can provide a reliable contacting fit, and can also provide a proper force to contact and press the U-shaped portion 51 to deform, thereby obtaining a damping force.

In order to obtain a proper damping force and clear shift and reduce the weight, a hollow design is adopted between the arc unit forming the corrugated teeth 411 and the upper ring body 41, the hollow 415 can be a through hole or a blind hole, and the hole core direction is the axial direction, as shown in fig. 1, 2 and 3.

In order to improve the aesthetic feeling of the appearance of the knob 10, a decorative cover 80 is arranged at the pipe orifice at the upper end of the snare-shaped knob 10, the edge of the decorative cover 80 is in clearance fit with the pipe orifice at the upper end of the knob 10, the decorative cover 80 is connected with the tubular shaft 21 through a connecting pipe 81, and the connecting pipe 81 and the tubular shaft 21 are both tubular parts, so that the light weight design can be further realized, and the reliable fixation of the bearing 30 is met.

Claims

1. A volume knob, characterized in that: a bearing (30) is arranged between the knob (10) and the seat body (20), the knob (10) and the seat body (20) are in interference fit with the inner ring and the outer ring of the bearing (30) or the outer ring and the inner ring of the bearing respectively, a synchronous rotating adjusting ring (40) is further connected onto the knob (10), the adjusting ring (40) and an elastic element (50) arranged on the seat body (20) form a damping type spacing blocking fit in the interval type circumferential direction, and a switch electric contact or an optical coupling element arranged on the adjusting ring (40) and the seat body (20) form an electric connection or an optical signal on-off fit.

2. The volume adjustment knob according to claim 1, wherein: the ring sleeve-shaped knob (10) is sleeved on an outer ring of the bearing (30), and an inner ring of the bearing (30) is sleeved on an outer pipe wall of a tubular shaft (21) arranged on the base body (20).

3. The volume adjustment knob according to claim 1, wherein: the adjusting ring (40) comprises an upper ring body (41), the upper ring body (41) is connected with the knob (10) in a synchronous rotating mode, a gear ring (42) is arranged on the lower end face of the upper ring body (41) in a circumferential direction at intervals, tooth crests and tooth troughs are located on a gear ring formed by axial convex teeth (421), and circumferential paths of the convex teeth (421) are located between a transmitting end (61) and a receiving end (62) of the optical coupling transceiver (60).

4. The volume adjustment knob according to claim 1, wherein: the lower end of the knob (10) is connected with a step-shaped transition sleeve (70), a small-diameter section (71) of the transition sleeve (70) located at the upper section is sleeved on the upper section of the tubular shaft (21) in an empty mode, a large-diameter section (72) at the lower part of the small-diameter section (71) is sleeved on an outer ring of the bearing (30) in an interference mode, and an inner ring of the bearing (30) is fixedly sleeved on the middle-lower section of the tubular shaft (21).

5. The volume adjustment knob according to claim 4, wherein: the lower section (73) of the large-diameter section of the transition sleeve (70) on the lower end face side of the bearing (30) is fixedly connected with an adjusting ring (40), the inner peripheral wall of an upper ring body (41) of the adjusting ring (40) is provided with corrugated teeth (411), and the corrugated teeth (411) and the elastic element (50) form circumferential damping type limiting fit.

6. The volume adjustment knob according to claim 5, wherein: the elastic element (50) is formed by bending an elastic strip into a U-shaped part (51), an extended flanging (52) is arranged at the notch, and the elastic element (40) is fixedly connected with the circumference of the tubular shaft (21).

7. The volume adjustment knob according to claim 6, wherein: the lower part of the tubular shaft (21) is provided with an annular groove (23) which is surrounded by a surrounding wall (22) and has an upward notch, the surrounding wall (22) is provided with an opening (221), a flanging (52) of the elastic element (50) is arranged in the annular groove (23), and the outer end of the U-shaped part (51) is exposed outside the opening (221).

8. The volume adjustment knob according to claim 5, wherein: the outer peripheral wall of the upper ring body (41) of the adjusting ring (40) is provided with a limit fit which forms circumferential synchronous rotation and axial downward displacement with the inner wall of the lower section (73) of the large-diameter section.

9. The volume adjustment knob according to claim 5, wherein: the inner peripheral wall of the upper ring body (41) of the adjusting ring (40) is provided with corrugated teeth (411) which are formed by sequentially arranging arc surface units, and the curvature axial center of the arc surface unit forming the corrugated teeth (411) is positioned on the outer side of the arc surface and is parallel to the axial center direction of the knob (10).

10. The volume adjustment knob according to claim 2, wherein: a decorative cover (80) is arranged at the pipe orifice at the upper end of the ring-shaped knob (10), the edge of the decorative cover (80) is in clearance fit with the pipe orifice at the upper end of the knob (10), and the decorative cover (80) is connected with the tubular shaft (21) through a connecting pipe (81).