Headset electronic device and headband adjustment structure thereof

Patent metadata

Field	Value
Publication number	US-11632997-B2
Application number	US-202016929216-A
Country	US
Kind code	B2
Filing date	Jul 15, 2020
Priority date	Apr 8, 2020
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

A headband adjustment structure includes a base, a wearing unit, a rotary adjusting assembly, a linkage member and an elastic element. The wearing unit includes a first end portion and a second end portion that overlap with each other. The first end portion and the second end portion are movably located in the base to define an adjustable accommodation space. The rotary adjusting assembly is pivotally located within the base, and provided with a gear body meshed with a first toothed rack of the first end portion and a second toothed rack of the second end portion so as to simultaneously move the first end portion and the second end portion in opposite directions for adjusting the adjustable accommodation space. The linkage member is connected to the rotary adjusting assembly. The elastic element abutting against the linkage member and the base, respectively.

First claim

What is claimed is:

1. A headband adjustment structure, comprising:
a base comprising a bottom case and a cover body, the bottom case comprising a recess formed with a receiving area and an annular groove area surrounding the receiving area, and a pressing plate located within the annular groove area, and the cover body fixedly covering the recess, and formed with a penetration opening;
a wearing unit comprising a first end portion and a second end portion which are opposite to and overlapped with each other, the first end portion and the second end portion which are movably located in the base to define an adjustable accommodation space, wherein the first end portion is formed with a first toothed rack, and the second end portion is formed with a second toothed rack;
a rotary adjusting assembly pivotally located within the receiving area of the base, and provided with a gear body, the gear body extending out of the cover body through the penetration opening, arranged between the first toothed rack and the second toothed rack and engaged with the first toothed rack and the second toothed rack so as to simultaneously move the first end portion and the second end portion in opposite directions for adjusting a size of the adjustable accommodation space, wherein an axis of the gear body is coaxial with an axis of the annular groove area;
a linkage member disposed within the receiving area of the base, and connected to the rotary adjusting assembly; and
an elastic element which is elongated and curvedly accommodated in the annular groove area to become a C-type elastic element, and the elastic element abutting against the linkage member and the base, respectively, wherein a part of the linkage member extends into the annular groove area to abut against one end of the elastic element, and the pressing plate is located within the annular groove area to abut against another end of the elastic element,
wherein, when the first toothed rack and the second toothed rack are simultaneously moved to rotate the gear body, the rotary adjusting assembly is allowed to drive the linkage member to compress the elastic element, so that the elastic element that is compressed stores a restored elastic force.

2. The headband adjustment structure of claim 1 , wherein the rotary adjusting assembly is further provided with a rotating frame, the rotating frame is coaxially fixed to the gear body and abuts against the linkage member.

3. The headband adjustment structure of claim 2 , wherein the linkage member comprises:
a rotary plate having a first surface, a second surface that is opposite to the first surface, and a circumferential surface that is coupled to the first surface and the second surface;
an abutting rib formed on the circumferential surface of the rotary plate for abutting against the one end of the elastic element;
a concave portion formed on the first surface of the rotary plate, and provided with a pushing portion, wherein the rotating frame is rotatably disposed within the concave portion to abut against the pushing portion; and
a through hole penetrating through the rotary plate, and connected to the concave portion and the second surface of the rotary plate, wherein the gear body goes through the through hole to extend outwards the second surface of the rotary plate from the concave portion,
wherein when the gear body rotates in a first rotation direction to increase the size of the adjustable accommodation space, by pushing the pushing portion with the rotating frame, the linkage member compresses the elastic element using the abutting rib.

4. The headband adjustment structure of claim 3 , wherein the rotating frame is free to rotate in the concave portion towards a second rotation direction being opposite to the first rotation direction.

5. The headband adjustment structure of claim 4 , wherein the pushing portion comprises a plurality of ratchet teeth, the ratchet teeth are arranged equally spaced on an inner wall of the concave portion to surround the rotating frame, each of the ratchet teeth is provided with a guiding side surface and a stop surface, and each of the guiding side surfaces is connected to two adjacent ones of the stop surfaces, respectively; and
the rotating frame comprises a bottom frame and at least one elastic arm, the bottom frame is fixedly connected to the gear body, and the at least one elastic arm is arched in which one end of the at least one elastic arm is connected to one side of the bottom frame, and the other end of the at least one elastic arm is convexly formed with a stopper, and the stopper directly abuts against the stop surface of one of the ratchet teeth for pushing the abutting rib of the linkage member to compress the elastic element,
wherein when the rotating frame is rotated towards the second rotation direction, the stopper of the at least one elastic arm moves to another of the ratchet teeth along the guiding side surface of one of the ratchet teeth.

6. The headband adjustment structure of claim 2 , further comprising:
a rotary knob abutting against the rotary adjusting assembly for rotating the gear body.

7. The headband adjustment structure of claim 6 , wherein the rotating frame is formed with a sunken portion, and the rotary knob is provided with a column inserting into the sunken portion,
wherein when the rotary knob rotates the rotating frame, the gear body of the rotary adjusting assembly is allowed to reversely move the first end portion and the second end portion through the column pushing the sunken portion for adjusting the size of the adjustable accommodation space.

8. The headband adjustment structure of claim 6 , wherein the rotary knob is fixedly screwed on the rotary adjusting assembly with a bolt, and a long axis direction of the bolt is coaxial with a rotation axis of the rotary adjusting assembly.

9. A headset electronic device, comprising:
a display; and
a headband adjustment structure, comprising:
a base comprising a bottom case and a cover body, the bottom case comprising a recess formed with a receiving area and an annular groove area surrounding the receiving area, and a pressing plate located within the annular groove area, and the cover body fixedly covering the recess, and formed with a penetration opening;
a wearing unit comprising a strip body, a first toothed rack and a second toothed rack, the strip body comprises a connection portion connected to the display, a first end portion and a second end portion which are opposite to and overlapped with each other, the first end portion and the second end portion which are movably located in the base to define an adjustable accommodation space, wherein the first toothed rack is located on the first end portion, and the second toothed rack is located on the second end portion;
a rotary adjusting assembly pivotally located within the receiving area of the base, and provided with a gear body, the gear body extending out of the cover body through the penetration opening, arranged between the first toothed rack and the second toothed rack and meshed with the first toothed rack and the second toothed rack so as to simultaneously move the first end portion and the second end portion in opposite directions for adjusting a size of the adjustable accommodation space, wherein an axis of the gear body is coaxial with an axis of the annular groove area;

a linkage member disposed within the receiving area of the base, and connected to the rotary adjusting assembly; and
an elastic element which is elongated and curvedly accommodated in the annular groove area to become a C-type elastic element, and the elastic element abutting against the linkage member and the base, respectively, wherein a part of the linkage member extends int

Assignees

• Quanta Comp Inc

Inventors

• Wang Chun-Wen
• Huang Chun-Nan
• Chen Chun-Lung
• Hu Heng-Min

Classifications

• A41D20/00

  Wristbands or headbands, e.g. for absorbing sweat · CPC title

• G06F1/163 Primary

  Wearable computers, e.g. on a belt · CPC title

• A42B1/22 Primary

  adjustable in size {; Form-fitting or self adjusting head coverings; Devices for reducing hat size} · CPC title