TWI438812B - Keypad button - Google Patents

Description

button

The invention relates to a button.

Electronic devices usually have buttons, such as power buttons, keyboard buttons, and the like. The electronic device generally has a housing and a circuit board, and the button is disposed between the housing and the button.

A button includes a pressing member and a switching member. The pressing member is disposed at the opening of the housing. The switching element is fixed to the circuit board and electrically connected to the circuit board. The pressing member includes a body and a touch portion disposed at an end of the body. When the pressing member slides toward the switching element in the opening of the housing, the touch portion of the pressing member abuts the switching element, so that the switching element is touched to transmit a touch signal to the processor of the electronic device through the circuit board.

However, when the electronic device housing is pressed by an external force, the pressing member of the button is slightly squeezed by the housing to accidentally touch the switching element, or the button accidentally touches the switching element under the gravity of the button, thereby causing the electronic device Operation error.

In view of the above, it is necessary to provide a button that prevents accidental touch.

A button is disposed between the casing and the substrate of the electronic device, and the casing is provided with a receiving hole. The button comprises a pressing member received in the receiving hole, a switching component fixed on the substrate, and a pressing member. And an elastic member between the substrate, the elastic member is provided with a through hole, the switching element is received in the through hole, and the elastic member surrounds the switching element, and the elastic member is received When the pressing member is pressed, elastic deformation occurs, so that the pressing member touches the switching element.

The elastic member of the button is pressed against the pressing member, so that the pressing member does not interfere with the switching element due to slight pressing of the housing or self-gravity, thereby preventing the button from being accidentally touched.

100‧‧‧ button

101‧‧‧shell

102‧‧‧ accommodating holes

103‧‧‧Fixed parts

104‧‧‧ Hole Department

105‧‧‧Substrate

106‧‧‧Lock hole

20‧‧‧Pressing parts

21‧‧‧ Pressing Department

23‧‧‧Director

25‧‧‧Contacts

231‧‧‧ Guide surface

30‧‧‧Switching elements

31‧‧‧ Touch Department

40‧‧‧Flexible parts

41‧‧‧through hole

1 is an assembled view of a key of a preferred embodiment of the present invention.

2 is an exploded perspective view of the button shown in FIG. 1.

Figure 3 is a cross-sectional view of the button of Figure 1 taken along the line III-III.

The keys of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1, a button 100 according to a preferred embodiment of the present invention is disposed between a housing 101 of an electronic device (not shown) and a substrate 105.

Referring to FIG. 2, the housing 101 is provided with a receiving hole 102. In the present embodiment, the receiving hole 102 is a stepped hole, and the large aperture end is located inside the housing 101. The large-aperture end of the accommodating hole 102 is formed with a truncated hole portion 104 (refer to FIG. 3). Two fixing members 103 are provided on one surface of the housing 101. The fixing member 103 may be a screw, a riveting stud, a heat stake, or the like. In the present embodiment, the fixing member 103 is a heat-melting column.

In the present embodiment, the substrate 105 is a circuit board. Two locking holes 106 are defined in the substrate 105. The fixing member 103 of the housing 101 is fixed through the locking hole 106.

The button 100 includes a pressing member 20, a switching member 30, and an elastic member 40. The pressing member 20 is received in the receiving hole 102 of the housing 101. The switching element 30 is fixed to the substrate 105 and electrically connected to the substrate 105. The elastic member 40 is abutted between the substrate 105 and the pressing member 20.

Referring to FIG. 3 together, the pressing member 20 includes a pressing portion 21, a guiding portion 23, and a contact portion 25. . The pressing portion 21 and the contact portion 25 are respectively fixed to both ends of the guiding portion 23. The guide portion 23 may have a shape of a cylinder, a truncated cone, a square, or the like. The guide portion 23 is received in the hole portion 104 of the accommodating hole 102 of the casing 101. The guide portion 23 has a guide surface 231, and the extending direction of the guide surface 231 is oblique to the axial direction of the guide portion 23, and is inclined toward one end of the guide portion 23 connected to the contact portion 25. In the present embodiment, the guide portion 23 has a truncated cone shape, and the guide surface 231 is a circular arc-shaped side surface of the guide portion 23. When the pressing member 20 slides in the accommodating hole 102 of the housing 101, the guiding surface 231 of the guiding portion 23 cooperates with the side wall of the hole portion 104 of the accommodating hole 102 of the housing 101, so that the pressing member 20 is along the guiding portion. 23 axial sliding. It can be understood that the pressing portion 21 and the guiding portion 23 can be an integrally formed structure.

The end surface of the switching element 30 has a convex touch portion 31. One end of the pressing portion 21 of the pressing member 20 can contact the touch portion 31 to cause the switching element 30 to be touched.

The elastic member 40 may be a spring, foam, elastic rubber or the like. In the present embodiment, the elastic member 40 is a foam having a through hole 41. When assembled, the switching element 30 is received in the through hole 41, and the elastic member 40 is abutted between the substrate 105 and the guiding portion 23 of the pressing member 20.

Referring to FIG. 1 to FIG. 3 simultaneously, when the button 100 is assembled, first, the switching element 30 is fixed on the substrate 105. Then, the elastic member 40 is sleeved on the switching element 30. Next, the pressing member 20 is received in the receiving hole 102 of the casing 101. Finally, the fixing member 103 of the housing 101 is passed through the locking hole 106 of the substrate 105, and the housing 101 is fixedly coupled with the substrate 105, so that the elastic member 40 is abutted against the guiding portion 23 of the pressing member 20 and the substrate 105. between.

When the button 100 is touched, a pressure is applied to the pressing member 20 to slide the pressing member 20 into the receiving hole 102 of the casing 101 toward the switching element 30. The pressing member 20 presses the elastic member 40 to elastically deform the elastic member 40 until one end of the pressing portion 21 of the pressing member 20 interferes with the touch portion 31 of the switching element 30, thereby causing the switching element 30 to be touched.

The elastic member 40 of the button 100 abuts against the pressing member 20, so that the pressing member 20 does not come into contact with the switching member 30 due to slight pressing of the housing 101 or its own gravity, thereby preventing the button 100 from being accidentally touched.

Further, the pressing member 20 of the button 100 has a guiding portion 23, so that the pressing member 20 is not jammed due to the misalignment. Therefore, the guiding portion 23 can prevent the button 100 from being misaligned when it is touched.

Further, the guiding portion 23 of the pressing member 20 has a guiding surface 231 inclined with respect to the moving direction of the pressing member 20. The receiving hole 102 of the housing 101 has a hole portion 104 matching the guiding surface 231, so that the pressing member The contact with the side walls of the accommodating hole 102 is tight to prevent dust from falling into the button 100. Moreover, since the guiding surface 231 is inclined with respect to the moving direction of the pressing member 20, the sliding resistance of the pressing member 20 is reduced, and the touch of the button 100 is more flexible.

Further, the guiding portion 23 of the pressing member 20 has a truncated cone shape, and the hole portion 104 of the receiving hole 102 of the housing 101 is also in the shape of a truncated cone, so that the pressing member 20 slides in the receiving hole 102 of the housing 101 and always faces the receiving hole. The center of the slider 102 slides to keep the gap between the pressing member 20 and the receiving hole 102 uniform, so that the positioning of the pressing member 20 is more accurate, and the touch precision of the button 100 is further improved.

It can be understood that the guiding surface 231 of the guiding portion 23 of the pressing member 20 can also be parallel to the moving direction of the pressing member 20. At this time, the receiving hole 102 of the housing 101 has a side wall inclined with respect to the moving direction of the pressing member 20. The button 100 has the same function as when the guide surface 231 of the guide portion 23 of the pusher 20 is inclined with respect to the moving direction of the pusher 20.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and cannot be limited thereto. The scope of the patent application for this case. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

101‧‧‧shell

102‧‧‧ accommodating holes

103‧‧‧Fixed parts

104‧‧‧ Hole Department

105‧‧‧Substrate

106‧‧‧Lock hole

21‧‧‧ Pressing Department

23‧‧‧Director

25‧‧‧Contacts

30‧‧‧Switching elements

40‧‧‧Flexible parts

Claims (10)

A button is disposed between the housing of the electronic device and the substrate, and the housing is provided with a receiving hole, and the button comprises a pressing member received in the receiving hole and a switching component fixed on the substrate. The improvement is that the button further includes an elastic member that is abutted between the pressing member and the substrate, the elastic member is provided with a through hole, the switching element is received in the through hole, and the elastic member surrounds the switching element, the elasticity The member may be elastically deformed when pressed by the pressing member, so that the pressing member touches the switching element. The button of claim 1, wherein the pressing member comprises a guiding portion and a pressing portion and a contact portion respectively fixed to both ends of the guiding portion. The button of claim 2, wherein the receiving hole is a stepped hole, the large aperture end is located inside the housing, and the guiding portion is received at the large aperture end. The button of claim 3, wherein the guiding portion has a guiding surface, the guiding surface extending obliquely to the axial direction of the guiding portion, and inclined toward one end of the guiding portion and the connecting portion . The button of claim 4, wherein the guiding portion has a truncated cone shape, and the large aperture end of the receiving hole is formed with a truncated hole portion, and the guiding portion is received in the hole portion. The button of claim 1, wherein the elastic member is one of a spring, a foam and an elastic rubber. The button of claim 1, wherein the housing is provided with a fixing member, and the substrate is provided with a locking hole, and the fixing member passes through the locking hole to fix the housing to the substrate. . The button of claim 7, wherein the fixing member is one of a screw, a riveting stud and a heat-melting column. The button of claim 1, wherein the end face of the switching element has a convex touch Control department. The button of claim 1, wherein the substrate is a circuit board, and the switching element is electrically connected to the substrate.