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EP-4738413-A1 - SWITCH ASSEMBLY, KEY MODULE, COMBINED KEY, AND ELECTRONIC DEVICE

EP4738413A1EP 4738413 A1EP4738413 A1EP 4738413A1EP-4738413-A1

Abstract

This application provides a switch assembly, a button module, a combined button, and an electronic device. Abutting parts that are of a terminal pair and that are in contact with a dome and contacts that are of the terminal pair and that are electrically connected to an external circuit are accommodated in an accommodating member of the switch assembly, and the two contacts of the terminal pair are disposed adjacently. An external circuit board may be electrically connected to the two contacts of the terminal pair, to be electrically connected to the switch assembly. The external circuit board does not need to be disposed at a bottom of the switch assembly, or does not need to be stacked on the switch assembly. No glue filling space needs to be reserved on a back surface of the switch assembly. This helps reduce a width of the switch assembly. The switch assembly, the button module, and the combined button are small in size, have reliable functions, and occupy less space after being mounted. The electronic device on which the switch assembly is mounted can be further thinned in a thickness direction, so that use in an electronic device with limited accommodating space is extensive.

Inventors

  • GUO, Zhiyue
  • LU, LIN
  • SU, TIEN CHIEH
  • HU, Suining
  • XIE, JIAN

Assignees

  • Huawei Technologies Co., Ltd.

Dates

Publication Date
20260506
Application Date
20240625

Claims (20)

  1. A switch assembly (500), comprising: an accommodating member (550), a dome (530), a push rod (520), a protective film (510), a first terminal (5410), and a second terminal (5420), wherein the dome (530), the push rod (520), the first terminal (5410), and the second terminal (5420) are accommodated in the accommodating member (550); the first terminal (5410) and the second terminal (5420) are spaced from each other, the first terminal (5410) comprises a first abutting part (5430) and a first contact (5444), the second terminal (5420) comprises a second abutting part (5450) and a second contact (5464), and the first contact (5444) and the second contact (5464) are configured to electrically connect the switch assembly (500) to an external circuit; the dome (530) and the first abutting part (5430) are spaced from each other, and the dome (530) is in contact with the second abutting part (5450); the push rod (520) is located on a surface that is of the dome (530) and that is away from the first abutting part (5430); the protective film (510) is located on a side that is of the push rod (520) and that is away from the dome (530); and the first contact (5444) and the second contact (5464) are disposed adjacently, the first contact (5444) and the second contact (5464) are located outside a range of a projection of the protective film (510) on a first plane, the first contact (5444) and the second contact (5464) are located on a same side of the protective film (510), and the first plane is a plane on which the accommodating member (550) is located.
  2. The switch assembly (500) according to claim 1, wherein the first terminal (5410) further comprises a first connection section, the first abutting part (5430) and the first contact (5444) are connected to each other through the first connection section, the first connection section comprises a first adapter part (5441), and a plane on which the first adapter part (5441) is located and the first plane are inclined.
  3. The switch assembly (500) according to claim 1 or 2, wherein the second terminal (5420) further comprises a second connection section, the second abutting part (5450) and the second contact (5464) are connected to each other through the second connection section, the second connection section comprises a fourth adapter part (5461), and a plane on which the fourth adapter part (5461) is located and the first plane are inclined.
  4. The switch assembly (500) according to any one of claims 1 to 3, wherein the first abutting part (5430) comprises a first abutting surface (5433), the second abutting part (5450) comprises a second abutting surface (5453), and a distance from a first reference point on the dome (530) to the first abutting surface (5433) is greater than a distance from the first reference point to the second abutting surface (5453).
  5. The switch assembly (500) according to any one of claims 1 to 4, wherein an embedding part (5432) is disposed at an end that is of the first abutting part (5430) and that is away from the first contact (5444), and the embedding part (5432) is embedded in the accommodating member (550).
  6. The switch assembly (500) according to any one of claims 1 to 5, wherein the second abutting part (5450) is partially embedded in the accommodating member (550).
  7. The switch assembly (500) according to any one of claims 1 to 6, wherein the accommodating member (550) comprises a first accommodating body and a second accommodating body, the first abutting part (5430), the second abutting part (5450), the dome (530), and the push rod (520) are accommodated in the first accommodating body, and the first contact (5444) and the second contact (5464) are accommodated in the second accommodating body.
  8. The switch assembly (500) according to claim 7, wherein a bottom of the first accommodating body is provided with a first sub-accommodating body and a second sub-accommodating body, the second sub-accommodating body is disposed around the first sub-accommodating body, the first abutting part (5430) is accommodated in the first sub-accommodating body, and the second abutting part (5450) is accommodated in the second sub-accommodating body; and a bottom of the second accommodating body is provided with a third sub-accommodating body and a fourth sub-accommodating body, the first contact (5444) is accommodated in the third sub-accommodating body, and the second contact (5464) is accommodated in the fourth sub-accommodating body.
  9. The switch assembly (500) according to claim 8, wherein a bottom of the accommodating member (550) is provided with a first channel (5540), the first channel (5540) is for communication between the first sub-accommodating body and the third sub-accommodating body, the first terminal (5410) further comprises the first connection section, the first connection section is connected to the first abutting part (5430) and the first contact (5444), and the first connection section is accommodated in the first channel (5540).
  10. The switch assembly (500) according to claim 8 or 9, wherein the bottom of the accommodating member (550) is provided with a second channel (5550), the second channel (5550) is for communication between the second sub-accommodating body and the fourth sub-accommodating body, the second terminal (5420) further comprises the second connection section, the second connection section is connected to the second abutting part (5450) and the second contact (5464), and the second connection section is accommodated in the second channel (5550).
  11. The switch assembly (500) according to claim 9, wherein the first channel (5540) comprises a first bent part (5541), an extension direction of the first bent part (5541) is inclined relative to the first plane, the first connection section comprises the first adapter part (5441), and the first adapter part (5441) is attached to an inner wall of the first bent part (5541).
  12. The switch assembly (500) according to claim 10, wherein the second channel (5550) comprises a second bent part (5551), an extension direction of the second bent part (5551) is inclined relative to the first plane, the second connection section comprises the fourth adapter part (5461), and the fourth adapter part (5461) is attached to an inner wall of the second bent part (5551).
  13. The switch assembly (500) according to any one of claims 7 to 12, wherein both the first accommodating body and the second accommodating body are grooves, the first accommodating body and the second accommodating body are spaced from each other, and a top surface of a groove wall of the first accommodating body is located on a side that is of a top surface of a groove wall of the second accommodating body and that is away from a back surface of the accommodating member (550).
  14. The switch assembly (500) according to any one of claims 8 to 13, wherein both the first sub-accommodating body and the second sub-accommodating body are grooves, the first sub-accommodating body and the second sub-accommodating body are spaced by a first sub-groove wall (5531), and an arc-shaped first boss (5533) is disposed on a top of the first sub-groove wall (5531).
  15. The switch assembly (500) according to any one of claims 7 to 14, wherein the first accommodating body is a groove, and the protective film (510) covers a top surface of a side wall of the first accommodating body.
  16. The switch assembly (500) according to any one of claims 7 to 15, wherein both the first accommodating body and the second accommodating body are grooves, the switch assembly (500) further comprises a first connecting piece (571) and a second connecting piece (572), the first connecting piece (571) and the second connecting piece (572) are located on a same surface of the accommodating member (550), the first connecting piece (571) covers the second accommodating body, the second connecting piece (572) is located at an end that is of the accommodating member (550) and that is away from the second accommodating body, and a surface that is of the first connecting piece (571) and that is away from the accommodating member (550) and a surface that is of the second connecting piece (572) and that is away from the accommodating member (550) are located on a same plane.
  17. The switch assembly (500) according to any one of claims 1 to 16, wherein two ends of the accommodating member (550) further comprise a convex and/or concave fastening structure.
  18. The switch assembly (500) according to any one of claims 1 to 17, wherein the switch assembly (500) further comprises a support plate (560), the support plate (560) is connected to the back surface of the accommodating member (550), and the support plate is a fiber reinforced plate or a metal plate.
  19. A button module (40), comprising a bracket (600), an adapter board (700), and the switch assembly (500) according to any one of claims 1 to 18, wherein the bracket (600) is configured to fasten the switch assembly (500); and the adapter board (700) comprises a third contact (711) and a fourth contact (712), the third contact (711) is electrically connected to the first contact (5444) of the switch assembly (500), and the fourth contact (712) is electrically connected to the second contact (5464) of the switch assembly (500).
  20. The button module (40) according to claim 19, wherein a first notch (5523) is provided on a side that is of the accommodating member (550) of the switch assembly (500) and that faces the adapter board (700); and the adapter board (700) comprises an insertion part (710) and a transition connection part (720), the insertion part (710) comprises the third contact (711) and the fourth contact (712), the insertion part (710) extends into the accommodating member (550), the transition connection part (720) is connected to the insertion part (710), and the transition connection part (720) is at least partially accommodated in the first notch (5523).

Description

This application claims priority to Chinese Patent Application No. 202311246836.5, filed with the China National Intellectual Property Administration on September 25, 2023 and entitled "SWITCH ASSEMBLY, BUTTON MODULE, COMBINED BUTTON, AND ELECTRONIC DEVICE", which is incorporated herein by reference in its entirety. TECHNICAL FIELD This application relates to the field of terminal device hardware, and specifically, to a switch assembly, a button module, a combined button, and an electronic device. BACKGROUND Lightweighting and thinning are a development trend of a portable electronic device like a mobile phone, a foldable device, and a tablet computer. A thickness and a weight of an electronic device are important factors that affect user experience. A switch assembly disposed on a side frame of the electronic device limits the thickness of the electronic device to a large extent. How to improve a structure of the switch assembly without reducing function reliability of the switch assembly to reduce a limitation of the switch assembly on further thinning of the electronic device is a problem worth considering. SUMMARY This application provides a switch assembly. Two contacts of a terminal pair of the switch assembly may be both accommodated in an accommodating member of the switch assembly, and are configured to connect the switch assembly to an external circuit. When the external circuit is connected to the switch assembly, the external circuit does not need to be stacked on the back of the switch assembly, and the external circuit may be electrically connected to the switch assembly more reliably. No glue filling space needs to be reserved in a width direction of the switch assembly. This integrally helps reduce space occupied by the switch assembly in a thickness direction of the electronic device when the switch assembly is used. According to a first aspect, a switch assembly is provided, including: an accommodating member, a dome, a push rod, a protective film, a first terminal, and a second terminal. The dome, the push rod, the first terminal, and the second terminal are accommodated in the accommodating member. The first terminal and the second terminal are spaced from each other. The first terminal includes a first abutting part and a first contact, the second terminal includes a second abutting part and a second contact, and the first contact and the second contact are configured to electrically connect the switch assembly to an external circuit. The dome and the first abutting part are spaced from each other, and the dome is in contact with the second abutting part. The push rod is located on a surface that is of the dome and that is away from the first abutting part, and the protective film is located on a side that is of the push rod and that is away from the dome. The first contact and the second contact are disposed adjacently, the first contact and the second contact are located outside a range of a projection of the protective film on a first plane, the first contact and the second contact are located on a same side of the protective film, and the first plane is a plane on which the accommodating member is located. In some scenarios, the first terminal may also be referred to as a first connection terminal, and the second terminal may also be referred to as a second connection terminal. The first terminal and the second terminal may form a terminal pair. That the first terminal and the second terminal are spaced from each other may also be understood as that the two terminals are not in contact with each other. In a possible implementation, both the first terminal and the second terminal may be conductive metal sheets. The abutting part and the contact of the terminal each should be understood as a conductive sheet, a conductive plate, a conductive block, or the like with a specific contact area. It should be understood that the dome is made of a conductive material. In some scenarios, the dome may be a conductive metal sheet. In this technical solution, the contact of the first terminal and the contact of the second terminal are located in a same region of the accommodating member. When an external circuit board is connected to the switch assembly through the contact of the terminal, the external circuit board does not need to be disposed on a back surface of the switch assembly, and space occupied by the switch assembly in a thickness direction is reduced during actual use. In addition, because the external circuit board does not need to be disposed on the back surface of the switch assembly, no filling medium needs to be provided on the back surface of the switch assembly, and no medium filling space needs to be reserved. Space occupied by the switch assembly in a width direction (namely, a thickness direction of the electronic device) is reduced, which helps further thinning the electronic device. In a possible implementation, a plane on which the first contact is located is coplanar wit