CN-122004804-A - Detection module and wearable equipment

Abstract

The application relates to the technical field of electronic equipment, and discloses a detection module and wearable equipment. The detection module comprises a support, a cover plate, a first circuit structure, a second circuit structure and a key rod, wherein the cover plate is fixed on the support and comprises a light transmission area, the first circuit structure comprises a first circuit board and a PPG sensor, the first circuit board is fixed on the support, the PPG sensor is arranged on one side of the first circuit board, which faces the cover plate, the PPG sensor is arranged opposite to the light transmission area, the first end of the key rod is fixedly connected with the first circuit board, the second circuit structure comprises a second circuit board, a micro switch and a pressure sensor, the micro switch is arranged on the second circuit board, the micro switch is arranged towards the second end of the key rod, the key rod is used for triggering the micro switch when moving, the pressure sensor is electrically connected with the second circuit board, and the pressure sensor is used for detecting the pressing force of the key rod. The detection module can realize the multiplexing of health detection and physical keys, and is favorable for improving the appearance and the integration level of the wearable equipment.

Inventors

• ZOU LIN
• JIN JUNYE
• YANG WENJIAN
• ZHAO MENGLONG

Assignees

• 华为终端有限公司

Dates

Publication Date

20260512

Application Date

20241111

Claims (19)

1. 1. The utility model provides a detection module, its characterized in that includes support, apron, first circuit structure, second circuit structure, button pole, wherein: the cover plate is fixed on the bracket and comprises a light transmission area; The first circuit structure comprises a first circuit board and a PPG sensor, the first circuit board is fixed on the support, the PPG sensor is arranged on one side, facing the cover plate, of the first circuit board, and the PPG sensor is arranged opposite to the light transmission area; The key rod comprises a first end and a second end, and the first end of the key rod is fixedly connected with the first circuit board; The second circuit structure comprises a second circuit board, a micro switch and a pressure sensor, wherein the micro switch is arranged on the second circuit board, the micro switch is arranged towards the second end of the key rod, the key rod is used for triggering the micro switch when moving, the pressure sensor is electrically connected to the second circuit board, and the pressure sensor is used for detecting the pressing force of the key rod.
2. 2. The detection module of claim 1, wherein the detection module comprises an elastic sheet, the elastic sheet is connected with the key lever, and the pressure sensor is fixed on the elastic sheet.
3. 3. The detecting module according to claim 2, wherein the key lever is configured to drive the elastic sheet to deform when moving, and the pressure sensor is configured to detect a pressing force of the key lever according to the deformation of the elastic sheet.
4. 4. A detection module according to claim 2 or 3, wherein the elastic sheet extends in a first direction, and a first end of the elastic sheet is fixedly connected to the key lever; the elastic sheet comprises a first surface which is arranged back to the first circuit structure, and the pressure sensor is fixed on the first surface of the elastic sheet.
5. 5. The detecting module according to claim 4, wherein the first end of the elastic sheet is provided with a snap ring, the outer wall of the key lever is provided with a fixing groove, and the snap ring is clamped in the fixing groove.
6. 6. The detection module according to any one of claims 2 to 5, wherein the second circuit board is a flexible circuit board, the second circuit board including a first connection portion and a second connection portion, the first connection portion being connected to the second connection portion; the first connecting part is positioned at the second end of the key rod, and the micro switch is arranged at one side of the first connecting part facing the key rod; The second connecting part is arranged opposite to the elastic sheet, and the pressure sensor is attached to the second connecting part.
7. 7. The detection module according to any one of claims 2-6, further comprising a stator for supporting the micro-switch.
8. 8. The detection module of claim 1, wherein the pressure sensor is fixedly connected to a side of the microswitch facing away from the key lever.
9. 9. The detection module of claim 8, wherein the micro-switch is in contact with the second end of the key lever.
10. 10. The detection module according to claim 8 or 9, further comprising a fixing piece for supporting the micro switch, the pressure sensor being fixed to the fixing piece.
11. 11. The detection module of claim 10, wherein the second circuit board is a flexible circuit board, the second circuit board comprises a first sub-board, a second sub-board and a bending part, the first sub-board is arranged at the second end of the key rod, the second sub-board is arranged at one side of the first sub-board opposite to the key rod, the second sub-board and the first sub-board are arranged at intervals, and the bending part is connected with the first sub-board and the second sub-board; The micro switch is arranged on one side of the first sub-board facing the key rod; The fixing piece is supported on one side of the first sub-board, which faces the second sub-board, the fixing piece comprises a first surface, which faces away from the first sub-board, the pressure sensor is arranged on the first surface of the fixing piece, and the pressure sensor is attached to the second sub-board.
12. 12. A wearable device, characterized by comprising a housing and the detection module according to any one of claims 1-11, wherein the outer wall of the housing is provided with a mounting groove, through which the detection module is assembled to the wearable device.
13. 13. The wearable device of claim 12, wherein the wearable device comprises a processor to: and controlling the wearable device to execute a first operation under the condition that the micro switch is detected to be triggered.
14. 14. The wearable device of claim 12 or 13, wherein the mounting groove is provided with a first through hole communicated with the interior of the shell, the key rod is arranged in the first through hole in a sliding manner, a first end of the key rod is positioned in the mounting groove, and a second end of the key rod is positioned in the interior of the shell; The bracket, the cover plate and at least part of the first circuit structure are arranged in the mounting groove, and the bracket is in sliding connection with the mounting groove; The second circuit structure is arranged inside the shell.
15. 15. The wearable device of claim 14, wherein the detection module further comprises a fixing piece, the fixing piece comprising a first piece, a second piece and a third piece, the second piece and the third piece being connected to two ends of the first piece, respectively; the first sheet body is used for supporting the micro switch, and the second sheet body and the third sheet body are respectively provided with a bayonet; The inner wall of the shell is provided with hooks corresponding to the two bayonets respectively, and each bayonet is hung on the corresponding hook.
16. 16. The wearable device of claim 14, wherein a holder is disposed inside the housing, the second circuit structure is disposed on the holder, and at least a portion of the holder is structurally supported on a side of the micro switch facing away from the key lever.
17. 17. The wearable device of any of claims 14-16, wherein the detection module further comprises a sealing ring sealingly disposed between an outer wall of the key bar and an inner wall of the first through-hole.
18. 18. The wearable device of any of claims 14-17, wherein the mounting slot is provided with a second through hole in communication with the housing interior, the first circuit board being electrically connected to the housing interior through the second through hole.
19. 19. The wearable device of any of claims 12-18, wherein the housing comprises a rear shell; The surface of the cover plate, which is opposite to the support, is provided with a first electrode, and the surface of the rear shell, which is opposite to the inside of the shell, is provided with a second electrode.

Description

Detection module and wearable equipment Technical Field The application relates to the technical field of electronic equipment, in particular to a detection module and wearable equipment. Background Along with the rapid development and popularization of wearable devices such as intelligent watches and intelligent bracelets, functions of the wearable devices are more and more comprehensive, for example, the existing intelligent watches not only have basic time and date display functions, but also can realize functions such as motion data recording, health detection and network communication. The health detection mainly comprises the detection of the body indexes including heart rate, blood oxygen and electrocardiogram (electrocardiograph, ECG). At present, health detection keys are configured on some intelligent watches, and a user can quickly start the health detection function of the intelligent watch by triggering the keys, so that the design can improve the high efficiency and timeliness of health detection, but the health detection keys occupy the space of the side frame of the intelligent watch, and the layout situation of the health detection keys and the existing keys of the intelligent watch is considered, so that the appearance quality and the whole integration level of the intelligent watch are not facilitated. Disclosure of Invention The application provides a detection module and a wearable device, wherein the detection module can realize health detection and multiplexing of physical keys, thereby being beneficial to improving the appearance and the integration level of the wearable device. In a first aspect, the present application provides a detection module, including a bracket, a cover plate, a first circuit structure, a second circuit structure, and a key lever. The cover plate is fixed on the support, the cover plate comprises a light transmission area, the first circuit structure comprises a first circuit board and a PPG sensor, the first circuit board is fixed on the support, the PPG sensor is arranged on one side, facing the cover plate, of the first circuit board, the PPG sensor is opposite to the light transmission area, so that the PPG sensor can send or receive light signals through the light transmission area, the key rod comprises a first end and a second end which are opposite, the first end of the key rod is fixedly connected with the first circuit board, the second circuit board comprises a second circuit board, a micro switch and a pressure sensor, the micro switch is arranged on the second circuit board, the micro switch is arranged towards the second end of the key rod, the key rod can be used for triggering the movable switch when moving, the pressure sensor is electrically connected to the second circuit board, and the pressure sensor is used for detecting the pressing force of the key rod. The pressing force of the key rod refers to the pressing force of the key rod in the pressed state, and the pressing force is applied to the cover plate by a user and is transmitted to the key rod through the bracket and the first circuit board in sequence by the cover plate. The pressing force of the key rod is in the threshold range, which indicates that the finger of the user is in good contact with the cover plate and the pressing force is moderate, so that the detection accuracy of the PPG sensor can be ensured. In the application, the detection module not only can detect the health data of the user, but also can realize the function of the physical key based on the micro switch, so that the detection module has the dual functions of health monitoring and physical key, thereby improving the integration level of the wearable equipment referring to the detection module. Moreover, compared with the wearable device with the detection keys independently arranged in the prior art, the number of the keys of the wearable device is relatively small, so that the appearance quality of the wearable device is improved. In some embodiments, the detection module includes an elastic sheet connected to the key lever, and the pressure sensor is fixed to the elastic sheet, so that the pressure sensor can detect the pressing force of the key lever through the elastic sheet. In some embodiments, the key lever may be used to deform the elastic sheet when moving, and the pressure sensor may detect the pressing force of the key lever according to the deformation of the elastic sheet. The pressure sensor is a strain gauge pressure sensor, the pressure sensor comprising one or more strain gauges. The deformation of the elastic sheet causes the strain sheet to synchronously deform, the resistance value of the strain sheet correspondingly changes along with the deformation of the strain sheet, and the change of the resistance value of the strain sheet further causes the change of the output signal of the pressure sensor. In some embodiments, the elastic piece extends along a first direction, and a first end o