TWI469169B - Keypad assembly and electronic device using the same - Google Patents

Description

Button structure and electronic device having the same

The present invention relates to a button structure, and more particularly to a button structure for an electronic device.

The panel structure of the electronic device is often provided with a button structure for controlling the power switch or performing other function adjustments. With the rapid development of the electronic industry, the control precision of the buttons in the electronic device is also higher and higher.

A button structure is provided on a casing of an electronic device. The housing is provided with a receiving hole. The button structure includes a key cap and a key switch housed in the receiving hole. The bottom of the key cap is provided with a bump. The button switch has a triggering portion and a fixed contact, and the triggering portion is an arched elastic piece. The bump abuts against the top of the trigger. Pressing the key cap in the button structure, the bump presses the trigger portion to be connected with the fixed contact; and the key cap is released, and the trigger portion abuts the bump to reset the key cap.

However, in the above-mentioned button structure, due to manufacturing tolerances or assembly errors, it is easy to cause a certain gap between the bump of the key cap and the top of the trigger portion in the untriggered state, thereby forming an idle stroke, resulting in the above-mentioned button structure. Feel poor.

In view of the above, it is necessary to provide a button structure with a better hand feeling when pressed and an electronic device having the same.

A button structure includes a support member, a button switch disposed on the support member and having a trigger portion, a key cap disposed opposite the trigger portion, and an elastic resisting member fixedly coupled to the key cap, wherein the support member and the key switch are located at the key cap and Between the elastic resisting members, the elastic resisting member elastically deforms against the supporting member when the button switch is not triggered, so that the key cap and the triggering portion are in close contact.

An electronic device includes a housing and a button structure disposed on the housing, the housing is provided with a receiving hole, and the button structure comprises a supporting member fixedly connected to the housing, and a button disposed on the supporting member and having a trigger portion a switch, a key cap disposed in the triggering portion and partially received in the receiving hole, and an elastic resisting member fixedly connected to the key cap, the support member and the button switch being located between the key cap and the elastic resisting member, elastically resisting The member includes an elastic portion and two connecting portions respectively bent from the two ends of the elastic portion toward the same side of the elastic portion, and the two connecting portions are fixedly connected with the key cap, wherein the elastic portion of the elastic resisting member is not triggered by the button switch The lower part is in contact with the support member to be elastically deformed, so that the key cap is in close contact with the trigger portion.

The elastic resisting member of the button structure is elastically deformed when the button switch is not triggered, and is elastically deformed by the support member, so that the key cap is kept in close contact with the trigger portion of the button switch, thereby avoiding a gap between the key cap and the trigger portion. It has a better hand feeling when the above button structure is pressed.

100‧‧‧Electronic devices

101‧‧‧shell

102‧‧‧ accommodating holes

103‧‧‧Key structure

10‧‧‧Key Cap

11‧‧‧ Pressing Department

13‧‧‧Limited

15‧‧‧Connecting Department

151‧‧‧Bump

20‧‧‧Fixed bracket

21‧‧‧First Fixed Department

23‧‧‧Second fixed department

25‧‧‧The third fixed department

30‧‧‧Support

31‧‧‧Ontology

312‧‧‧through hole

32‧‧‧Support

50‧‧‧Key switch

51‧‧‧Trigger

60‧‧‧Flexible resisting parts

61‧‧‧Flexible Department

63‧‧‧Connecting Department

632‧‧‧Fixed holes

FIG. 1 is a partial perspective view of an electronic device according to an embodiment of the present invention.

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

3 is a perspective cross-sectional view of the electronic device shown in FIG. 1.

The key structure of the present invention and the electronic device having the same will be further described in detail below with reference to the accompanying drawings and specific embodiments.

Referring to FIG. 1 and FIG. 2 , the electronic device 100 includes various functional modules for implementing various functions. However, in order to save space, the present embodiment focuses on the housing 101 of the electronic device 100 and is fixed on the housing 101 . The button structure 103. Specifically, in the present embodiment, the button structure 103 is a function table button of the electronic device 100, and the casing 101 is an outer casing of the electronic device. The housing 101 is provided with a receiving hole 102 (please refer to FIG. 3).

The button structure 103 includes a keycap 10, a fixing bracket 20, a support member 30, a push button switch 50, and a resilient resisting member 60. The button cap 10 is partially received in the receiving hole 102 of the housing 101. The fixing bracket 20 is fixed to the inner side surface of the casing 101 and disposed adjacent to the receiving hole 102. The support member 30 is fixedly connected to the fixing bracket 20 and disposed opposite to the receiving hole 102. The push button switch 50 is fixed to the support member 30. The elastic resisting member 60 is fixedly coupled to the keycap 10 and abuts against the support member 30.

The keycap 10 includes a pressing portion 11 , a limiting portion 13 and two connecting portions 15 . The pressing portion 11 is substantially elliptical in shape and is slidable in the receiving hole 102 of the housing 101. The stopper portion 13 is provided on one side of the pressing portion 11. The size of the limiting portion 13 is larger than the size of the receiving hole 102 of the housing 101 to prevent the pressing portion 11 from falling out of the receiving hole 102. The two connecting portions 15 are respectively disposed at both ends of the outer surface of the limiting portion 13 . In the embodiment, a protrusion 151 is disposed on one side of each connecting portion 15 .

The fixing bracket 20 includes a first fixing portion 21 , two second fixing portions 23 and a third fixing portion 25 . The first fixing portion 21 is a rectangular plate body that is fixed to the inner side of the casing 101. The second fixing portions 23 are bent and extended from both ends of the first fixing portion 21 side. Both ends of the third fixing portion 25 are connected to the second fixing portions 23, respectively. The first fixing portion 21, the second fixing portion 23, and the third fixing portion 25 together form an annular frame. In this implementation In the formula, the first fixing portion 21 is fixed to the inner side of the casing 101 by welding. The third fixing portion 25 is for fixing other components (not shown) that are connected to the electronic device 100.

The support member 30 includes a body 31 and a support portion 32 provided at a middle portion of the body 31 side. A through hole 312 is defined in each of the two ends of the body 31. The body 31 is fixed to the second fixing portion 23 of the fixing bracket 20 by a through hole 312 through a screw (not shown).

The push button switch 50 is fixed to the support portion 32 of the support member 30. The push button switch 50 has a trigger portion 51. The stopper portion 13 of the keycap 10 presses the trigger portion 51 to activate the key switch 50. In the present embodiment, the push button switch 50 is fixed to the support member 30 by welding.

The elastic resisting member 60 is substantially U-shaped and includes an elastic portion 61 and two connecting portions 63. The elastic portion 61 is substantially curved, and its convex top portion abuts against the support portion 32 of the support member 30. The two connecting portions 63 are bent and extended from the opposite ends of the elastic portion 61 toward the same side of the elastic portion 61. A fixing hole 632 is defined in the free end of each connecting portion 63. The fixing post 632 of the connecting portion 15 of the key cap 10 is inserted through the fixing hole 632 to fix the elastic resisting member 60 to the key cap 10. In the present embodiment, the elastic resisting member 60 is integrally molded from an elastic material.

Referring to FIG. 2 and FIG. 3 simultaneously, when the button structure 103 is assembled, the first fixing portion 21 of the fixing bracket 20 is first fixed to the inner side of the casing 101. The two ends of the body 31 of the support member 30 are fixedly connected to the second fixing portions 23 of the fixing bracket 20 . The pressing portion 11 of the keycap 10 is housed in the receiving hole 102 of the casing 101. The push button switch 50 is fixed to the support portion 32 of the support member 30. The protrusion 151 of the keycap 10 is inserted into the fixing hole 632 of the connecting portion 63 of the elastic abutting member 60 to fix the elastic abutting member 60 to the keycap 10. The elastic portion 61 of the elastic resisting member 60 abuts against the supporting portion 32 of the support member 30, so that the limiting portion 13 of the keycap 10 is in close contact with the triggering portion 51 of the push button switch 50.

When the button structure 103 is used, the pressing portion 11 of the keycap 10 is pressed to slide the keycap 10 toward the trigger portion 51 of the key switch 50 until the key switch 50 is activated. The elastic portion 61 of the elastic resisting member 60 completely recovers the deformation or the elastic variable is reduced. When the pressing portion 11 of the keycap 10 is released, the trigger portion 51 of the push switch 50 is automatically reset to lift the keycap 10. The elastic portion 61 of the elastic resisting member 60 is elastically deformed by the support portion 32 of the support member 30, so that the stopper portion 13 of the keycap 10 is kept in close contact with the trigger portion 51 of the push switch 50.

It should be noted that when the button switch 50 of the button structure 103 is not triggered, the elastic force of the elastic resisting member 60 applied to the keycap 10 due to the elastic deformation is smaller than the pressing force required when the trigger portion 51 of the button switch 50 is triggered, thereby avoiding the button. The switch 50 is accidentally touched, so that the key switch 50 can operate normally.

The elastic resisting member 60 of the button structure 103 is elastically deformed against the support member 30 in the untriggered state of the push button switch 50, so that the key cap 10 is still in close contact with the trigger portion 51 of the push button switch 50, thereby avoiding the key cap. A gap is formed between the trigger portion 51 of the push button switch 10 and the button structure 103 is pressed to have a better hand feeling.

In summary, the present invention complies with the requirements of the invention patent, and submits a patent application according to law. However, the above is only a preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

100‧‧‧Electronic devices

101‧‧‧shell

103‧‧‧Key structure

10‧‧‧Key Cap

20‧‧‧Fixed bracket

30‧‧‧Support

50‧‧‧Key switch

60‧‧‧Flexible resisting parts

Claims (9)

A button structure includes a support member, a button switch disposed on the support member and having a trigger portion, and a key cap disposed opposite to the trigger portion, wherein the button structure further comprises a resilient connection fixedly coupled to the key cap The support member and the key switch are located between the key cap and the elastic resisting member, wherein the elastic resisting member is elastically deformed against the support member when the push button switch is not triggered, so that the key is elastically deformed. The cap is in close contact with the trigger portion. The button structure of claim 1, wherein the elastic resisting member comprises an elastic portion and two connecting portions respectively extending from opposite ends of the elastic portion toward the same side of the elastic portion, the two connecting portions Fixed connection to the key cap. The button structure of claim 2, wherein each of the connecting portions is provided with a fixing hole, and one side of the key cap is provided with a protruding post penetrating the fixing hole. The button structure of claim 1, wherein the button structure further comprises a fixing bracket fixedly connected to the support member. The button structure of claim 4, wherein the support member comprises a body fixedly connected to the fixing bracket at both ends, and a supporting portion disposed at a middle portion of the body, the button switch being fixed on the supporting portion The elastic portion is in contact with the support portion. The button structure of claim 5, wherein the elastic portion is substantially arcuate, and a convex top portion thereof abuts against the support portion. An electronic device includes a housing and a button structure disposed on the housing, the housing is provided with a receiving hole, and the button structure comprises a supporting member fixedly connected to the housing, and is disposed on the supporting member The key switch having the triggering portion and the key cap disposed in the triggering portion and partially received in the receiving hole is improved in that the button structure further comprises an elastic resisting member fixedly connected with the key cap, the support member and the key switch are located The elastic cap between the key cap and the elastic resisting member The member includes an elastic portion and two connecting portions respectively extending from the opposite ends of the elastic portion toward the same side of the elastic portion, the two connecting portions being fixedly coupled to the key cap, wherein the elastic portion of the elastic resisting member is When the button switch is in an untriggered state, it is elastically deformed by the support member, so that the key cap is in close contact with the trigger portion. The electronic device of claim 7, wherein each of the connecting portions is provided with a fixing hole, and one side of the key cap is provided with a protruding post penetrating the fixing hole. The electronic device of claim 7, wherein the button structure further comprises a fixing bracket fixed to the inner side of the housing and fixedly connected to the support member.