Watch clasp capable of finely adjusting watch strap length

Patent metadata

Field	Value
Publication number	US-11013301-B2
Application number	US-201716603660-A
Country	US
Kind code	B2
Filing date	Apr 24, 2017
Priority date	Apr 14, 2017
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

A watch clasp with a finely adjustable watch strap length includes: a watch clasp sliding holder, located on a back surface of a watch clasp case; a sliding stop module, fixing the watch clasp sliding holder to the back surface of the watch clasp case through engagement, where the sliding holder can slide between the watch clasp case and the sliding stop module; a stop spring bar, fixed to the watch clasp case, and an unlock module, fixed to the watch clasp case where the unlock module is engaged with the sliding stop module, and the stop spring bar and the unlock module are respectively located on two sides of the sliding stop module; and an extension latch assembly, where one end of the extension latch assembly is fixed to the watch clasp case, and another end of the extension latch assembly is fixed to an elastic fine-adjusting assembly.

First claim

What is claimed is:

1. A watch clasp for adjusting a watch strap length, comprising:
a watch clasp sliding holder located on a back surface of a watch clasp case;
a sliding stop module fixing the watch clasp sliding holder to the back surface of the watch clasp case through engagement, wherein the sliding holder slides between the watch clasp case and the sliding stop module;
a stop spring bar fixed to the watch clasp case;
an unlock module fixed to the watch clasp case, the unlock module including a main toggle arm that drives an auxiliary toggle arm of the sliding stop module, the auxiliary toggle arm being flexibly connected to the main toggle arm, and the stop spring bar and the unlock module being respectively located on two sides of the sliding stop module; and
an extension latch assembly, wherein one end of the extension latch assembly is fixed to the watch clasp case, and another end of the extension latch assembly is fixed to an elastic fine-adjusting assembly.

2. The watch clasp according to claim 1 , wherein by pressing two ends of the unlock module, a spring in the unlock module drives the main toggle arm, and the main toggle arm drives the auxiliary toggle arm so that two fixing poles of the sliding stop module move towards each other, to unlock the watch clasp sliding holder.

3. The watch clasp according to claim 2 , wherein
the sliding stop module is engaged with the watch clasp sliding holder,
a fixing module of the sliding stop module is provided with a notch,
a position at which the watch clasp sliding holder is engaged with the sliding stop module is provided with a corresponding notch, and
the notch is used to remove the connected sliding stop module.

4. The watch clasp according to claim 3 , wherein the notch is semicircular.

5. The watch clasp according to claim 2 , wherein
the sliding stop module comprises an auxiliary toggle arm, a spring, and a sliding stop module enclosure,
the auxiliary toggle arm resets by using the spring, and
the fixing pole is a part of the auxiliary toggle arm.

6. The watch clasp according to claim 2 , wherein
the unlock module comprises a main toggle arm, a spring, and an unlock module enclosure, and
the main toggle arm resets by using the spring.

7. The watch clasp according to claim 1 , wherein
the stop spring bar is fixed, by using an elastic device, to a fixing hole disposed on the watch clasp case,
a size of the fixing hole is the same as a size of the elastic device, and
the stop spring bar adjusts a length of the stop spring bar by using the elastic device.

8. The watch clasp according to claim 1 , wherein
the extension latch assembly comprises a first extension fastening component, a second extension fastening component, and a fixing spring bar shaft,
a size of one end of the first extension fastening component is the same as a size of a groove at one end of the second extension fastening component the one end of the first extension fastening component and the one end of the second extension fastening component are connected by using a rotating shaft,
another end of the first extension fastening component is connected to the elastic fine-adjusting assembly,
another end of the second extension fastening component is connected to the watch clasp case,
rotation between the first extension fastening component and the second extension fastening component forms any angle, and
the fixing spring bar shaft is configured to fix the second extension fastening component to the watch clasp case.

9. A watch clasp for adjusting a watch strap length, comprising:
a watch clasp sliding holder located on a back surface of a watch clasp case;
a sliding stop module fixing the watch clasp sliding holder to the back surface of the watch clasp case through engagement, wherein the sliding holder slides between the watch clasp case and the sliding stop module;
a stop spring bar fixed to the watch clasp case;
an unlock module fixed to the watch clasp case, wherein the unlock module is engaged with the sliding stop module, and the stop spring bar and the unlock module are respectively located on two sides of the sliding stop module; and
an extension latch assembly, wherein one end of the extension latch assembly is fixed to the watch clasp case, and another end of the extension latch assembly is fixed to an elastic fine-adjusting assembly,
wherein the elastic fine-adjusting assembly includes a supporter, a slider, a spring bar shaft, a drive block, a fixing spring bar, and a leaf spring, the leaf spring is embedded into a connection port on the drive block, and the fixing spring bar fixes the drive block to the supporter, and
the fixing spring bar fixes the slider to the supporter, the spring bar shaft is fixed to the slider, and the spring bar shaft is configured to connect to a watch strap.

10. The watch clasp according to claim 9 , wherein
the fixing spring bar fixes the drive block and the leaf spring to the supporter,
the slider is flexibly connected to the supporter,
the fixing spring bar, the drive block, and the leaf spring are all covered by the slider,
the slider slides along a groove on the supporter, and
the slider adjusts a sliding position by using the leaf spring.

11. A watch strap, comprising a watch clasp that adjusts a length of the watch strap, the watch clasp including:
a watch clasp sliding holder, located on a back surface of a watch clasp case;
a sliding stop module, fixing the watch clasp sliding holder to the back surface of the watch clasp case through engagement, wherein the sliding holder slides between the watch clasp case and the sliding stop module;
a stop spring bar, fixed to the watch clasp case, and an unlock module, fixed to the watch clasp case, the unlock module including a main toggle arm that drives an auxiliary toggle arm of the sliding stop module, the auxiliary toggle arm being flexibly connected to the main toggle arm, and the stop spring bar and the unlock module being respectively located on two sides of the sliding stop module; and
an extension latch assembly, wherein one end of the extension latch assembly is fixed to the watch clasp case, and another end of the extension latch assembly is fixed to an elastic fine-adjusting assembly.

12. A watch, comprising a watch strap and a watch clasp connected to the watch strap, the watch clasp adjusting a length of the watch strap, and the watch clasp including:
a watch clasp sliding holder, located on a back surface of a watch clasp case;
a sliding stop module, fixing the watch clasp sliding holder to the back surface of the watch clasp case through engagement, wherein the sliding holder slides between the watch clasp case and the sliding stop module;
a stop spring bar, fixed to the watch clasp case, and an unlock module, fixed to the watch clasp case, the unlock module including a main toggle arm that drives an auxiliary toggle arm of the sliding stop module, the auxiliary toggle arm being flexibly connected to the main toggle arm, and the stop spring bar and the unlock module being respectively located on two sides of the sliding stop module; and
an extension latch assembly, wherein one end of the extension latch assembly is fixed to the watch clasp case, and another end of the extension latch assembly is fixed to an elastic fine-adjusting assembly.

Assignees

• Huawei Tech Co Ltd

Inventors

• Yang Rongguang
• Liu Jun
• Zhao Menglong
• Zhang Bin

Classifications

• A44C5/04

  extensible {(A44C5/022 and A44C5/025 take precedence)} · CPC title

• Y10T24/2155

  Jewelry-watch straps · CPC title

• A44C5/246 Primary

  having size adjusting means · CPC title

• A44C5/24

  with folding devices · CPC title

• Y10T24/4782

  Watch strap · CPC title