CN-122026168-A - Physical power-off device and electronic product

CN122026168ACN 122026168 ACN122026168 ACN 122026168ACN-122026168-A

Abstract

The invention provides a physical power-off device and an electronic product, wherein a first end of an elastic piece is connected with a pressing component, a second end of the elastic piece is abutted against a circuit board, a contact is arranged on the pressing component, the pressing component is matched with the elastic piece so that the contact is in a contact state or a non-contact state with a key pad on the circuit board, a first end of a locking piece is arranged on a second shell, and a second end of the locking piece is connected with the pressing component and used for locking the pressing component. The battery of electronic product can be thoroughly powered off through simple and easy reliable structure combination, the cost is reduced, the reliability is strong, the usability is strong, the battery can be applied to a plurality of electronic products, the problem that the electronic product cannot be restarted after being halted can be effectively solved, the problems of overdischarge and battery safety of the battery caused in the long-time storage and transportation processes of the electronic product with the undetachable battery are solved, the complaint rate and after-sale rate of the product are reduced, and the user experience is improved.

Inventors

HONG HAIBO
QI KAIFENG
LI WENQUAN
GUO LIHUA
CHEN YUWU
CHEN FEI

Assignees

深圳创维数字技术有限公司
深圳创维新世界科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260306

Claims (10)

1. The physical power-off device is characterized by comprising a first shell, a second shell, a pressing component, an elastic piece and a locking piece; The first shell and the second shell are arranged at intervals along a first direction, and an accommodating space for accommodating the circuit board is formed between the first shell and the second shell; The first shell is provided with an assembly hole arranged along a first direction, and the pressing assembly is movably arranged in the assembly hole along the first direction; the first end of the elastic piece is connected with the pressing component, and the second end of the elastic piece is abutted with the circuit board; the pressing component is provided with a contact, and the pressing component is matched with the elastic piece so that the contact is in a contact state or a non-contact state with a key pad on the circuit board; The first end of the locking piece is arranged on the second shell, and the second end of the locking piece is connected with the pressing component and used for locking the pressing component.
2. The physical power outage device according to claim 1, wherein the pressing assembly is provided with circular arc-shaped locking grooves corresponding to the locking pieces, and the circular arc-shaped locking grooves are arranged along a first direction; the first end of the locking piece is rotatably arranged on the second shell, and the second end of the locking piece is rotatably arranged in the circular arc-shaped locking groove; the contact and a key pad on the circuit board are switched from a non-contact state to a contact state, and the second end of the locking piece rotates from the bottom end of the circular arc-shaped locking groove to the top end of the circular arc-shaped locking groove; the contact and the key pad on the circuit board are switched from a contact state to a non-contact state, and the second end of the locking piece rotates from the top end of the circular arc-shaped locking groove to the bottom end of the circular arc-shaped locking groove.
3. The physical power outage device according to claim 2, wherein the locking member comprises a connecting rod, an intermediate rod extending from an end of the connecting rod in a radial direction of the connecting rod, and a locking rod extending from an end of the intermediate rod away from the connecting rod in a radial direction of the intermediate rod; The connecting rod is rotatably arranged on the second shell, and the lock rod is rotatably arranged in the circular arc-shaped locking groove.
4. A physical power outage device according to claim 3, wherein the locking element further comprises a stop lever extending in a radial direction of the locking lever from an end of the locking lever remote from the intermediate lever, the stop lever being located inside the pressing assembly and the intermediate lever being located outside the pressing assembly.
5. The physical power outage device according to claim 1, wherein the number of the locking elements is two, and the two locking elements are symmetrically arranged with the pressing assembly as a symmetry axis.
6. The physical power outage device according to claim 2, wherein the pressing assembly comprises a pressing key and a sleeve, the pressing key is movably mounted in the assembly hole in a first direction, the sleeve is detachably mounted on the pressing key, a first end of the elastic piece is mounted in the sleeve, and the circular arc-shaped locking groove is formed in a cylinder wall of the sleeve.
7. The physical power outage device according to claim 6, wherein a gear adjustment area is provided at an end of the pressing key adjacent to the elastic member, and the sleeve is detachably mounted at different positions of the gear adjustment area to adjust a pressing length of the pressing key.
8. An electronic product comprising a circuit board and the physical power outage device according to any one of claims 1 to 7; the circuit board is arranged between the first shell and the second shell; The circuit board is provided with a key pad which is used for contacting or not contacting with the contact on the pressing component.
9. The electronic product of claim 8, wherein the circuit board comprises a switching tube and a buffer protection circuit; the first end of the switching tube is connected with the positive electrode of the battery, the second end of the switching tube is connected with the negative electrode of the battery, and the control end of the switching tube is grounded through the buffer protection circuit; The first end of the key pad is connected with a connecting node between the battery anode and the switch tube, and the second end of the key pad is connected with the buffer protection circuit.
10. The electronic product of claim 9, wherein the buffer protection circuit comprises a first resistor, a second resistor and a capacitor, wherein the control end of the switch tube is grounded through the second resistor; The first end of the first resistor is connected with the second end of the key pad, and the second end of the first resistor is connected with a connection node between the control end of the switch tube and the second resistor; the first end of the capacitor is connected with a connecting node between the first resistor and the second resistor, and the second end of the capacitor is connected with the grounding end of the second resistor.

Description

Physical power-off device and electronic product Technical Field The present invention relates to the field of physical power-off devices, and in particular, to a physical power-off device and an electronic product. Background At present, in order to improve the functionality, safety and economy of products, physical power-off devices are designed for electronic products in many fields, for example, in the current fields of consumer electronics and internet of things equipment, in order to pursue a more compact product structure, a higher waterproof and dustproof level and a more integrated design, more and more electronic products begin to adopt schemes of built-in non-detachable batteries. Such designs are commonly found in bluetooth headsets, smart watches, portable medical devices, smart home sensors, electronic dictionaries, handheld POS devices, and various low-power internet of things terminals. The non-detachable battery not only can reduce external interfaces and movable components, so that the overall reliability of the equipment is improved, but also can optimize the utilization rate of an internal space through precise battery packaging and structural fixation, and realize double improvement of product frivolity and morphological freedom. However, this design also presents a non-negligible engineering challenge in terms of achieving a safe, reliable and thorough electrical isolation, i.e. complete power down at the physical level, when the product needs long-term storage, transportation, after-market maintenance, or when the user wishes to completely stop standby power. Unlike conventional replaceable battery devices, the user cannot achieve this by simply removing the battery, and the power down function must be provided by the product itself as a built-in feature. If complete power failure cannot be achieved, the built-in battery will face multiple risks. First, even if the device is in a "software off" state, there may still be microampere-level quiescent current on its motherboard generated by the battery management unit, real-time clock, or some standby chip. This slow discharge, which lasts for weeks or even months, is extremely likely to result in a complete depletion of the battery charge, thus sinking into deep overdischarge conditions. The deep overdischarge of the lithium ion battery can cause irreversible chemical damage, the battery capacity is obviously reduced, the cycle life is shortened, and even potential safety hazards exist in the subsequent charging process. Secondly, in the logistics transportation process, the equipment may trigger a battery key due to unexpected vibration or extrusion, so that the equipment is started and continuously operates in the sealed package until the electric quantity is exhausted, and a customer receives a failure product which cannot be started, so that the user experience and brand reputation are seriously affected. In addition, when the equipment has software faults, system deadlocks or needs to carry out hardware debugging, the forced power-off mechanism independent of the system software is a necessary basic function for carrying out system resetting and fault checking. Therefore, designing a physical power-off scheme which is efficient, low-cost and user-friendly for products with non-detachable batteries has become a key requirement for product development, wherein the key requirement is functional, safe and economical. Disclosure of Invention The invention provides a physical power-off device and an electronic product, which are used for solving the problems of poor product functionality, safety and economy caused by the fact that the complete power-off of the existing electronic product cannot be realized. A physical power-off device comprises a first shell, a second shell, a pressing component, an elastic piece and a locking piece; The first shell and the second shell are arranged at intervals along a first direction, and an accommodating space for accommodating the circuit board is formed between the first shell and the second shell; The first shell is provided with an assembly hole arranged along a first direction, and the pressing assembly is movably arranged in the assembly hole along the first direction; the first end of the elastic piece is connected with the pressing component, and the second end of the elastic piece is abutted with the circuit board; the pressing component is provided with a contact, and the pressing component is matched with the elastic piece so that the contact is in a contact state or a non-contact state with a key pad on the circuit board; The first end of the locking piece is arranged on the second shell, and the second end of the locking piece is connected with the pressing component and used for locking the pressing component. Preferably, the pressing component is provided with a circular arc-shaped locking groove corresponding to the locking piece, and the circular arc-shaped locking groove is arranged a