TWI425545B - Switching assembly and host computer using the same - Google Patents

Description

Switch device and host using the same

The present invention relates to a switch device, and more particularly to a switch device having a function of preventing an erroneous operation and a host using the switch device.

On the panel of the computer mainframe, in addition to a plurality of ports (such as a data line port, a headphone port, etc.), a power switch and a reset switch are also provided. Common power and reset switches are push-button. During normal use of the computer, the user often accidentally touches the power switch to cut off the power, thereby losing unsaved data. Repeated occurrences of such conditions are more likely to cause damage to the computer.

A computer mainframe, the panel of which is provided with an electric protection door to protect various ports and switches. The electric door control mechanism is installed inside the main machine and is composed of a motor, a transmission belt, a swing rod wheel and a swing rod. The electric door is driven by a pendulum connected to the motor, and is moved up and down on the main panel of the computer to be turned on or off.

However, the above-mentioned electric protection door has a complicated structure and a large space, which does not meet the development trend that the volume of electronic products is getting smaller and smaller.

In view of the above, it is necessary to provide a switch device having a simple structure and capable of preventing erroneous operation and a host using the switch device.

A switch device includes a button, a support plate and a circuit board. The buttons include a knob and a push rod that is coupled to the knob. There is a limit protrusion on the knob. A through hole for accommodating a knob is opened on the support plate. The side wall of the through hole is provided with a blocking portion that abuts the limiting protrusion. A gap is formed in the blocking portion. Elastic contacts are provided on the board. The limiting element protrudes through the notch to bring the push rod into contact with the elastic contact piece.

A host includes a casing and a switch device mounted on the casing. The switch device includes a button, a support plate, and a circuit board. The buttons include a knob and a push rod that is coupled to the knob. There is a limit protrusion on the knob. A through hole for accommodating a knob is opened on the support plate. The side wall of the through hole is provided with a blocking portion that abuts the limiting protrusion. A gap is formed in the blocking portion. Elastic contacts are provided on the board. The limiting element protrudes through the notch to bring the push rod into contact with the elastic contact piece.

The switch device uses fewer components, has a simple structure, and can be pressed after rotating the knob by a certain angle during use, thereby effectively preventing the operator from accidentally touching the knob and causing the power supply to be accidentally turned off, which has certain prevention of misoperation. The effect.

10‧‧‧ button

11‧‧‧ knob

13‧‧‧Put

30‧‧‧Support board

31, 51‧‧‧through holes

33‧‧‧Blocking Department

40‧‧‧torsion spring

41‧‧‧ Spring body

43‧‧‧First spring arm

45‧‧‧Second spring arm

50‧‧‧ Positioning board

53‧‧‧ accommodating slots

55‧‧‧ bracket

60‧‧‧ screws

70‧‧‧ boards

71‧‧‧Flexible contact

100‧‧‧Switching device

111‧‧‧ pit

113‧‧‧Limited bulges

115‧‧‧ hook

117‧‧‧ receiving trough

118‧‧‧First Housing Department

119‧‧‧ Second Housing Department

200‧‧‧Chassis

300‧‧‧Host

331‧‧ ‧ gap

333‧‧ ‧ chute

531‧‧‧First Housing Department

533‧‧‧Second accommodating department

551‧‧‧Lock hole

1151‧‧‧Sliding section

1153‧‧‧Hook

1 is a schematic view showing the assembly of a host according to an embodiment of the present invention, the host including a switching device.

2 is an enlarged perspective view of the switch device shown in FIG. 1.

3 is a perspective exploded view of the switch device shown in FIG. 2.

4 is a perspective exploded view showing another angle of the switch device shown in FIG. 2.

Figure 5 is an enlarged cross-sectional view taken along line V-V of Figure 2.

The switch device and the host of the present invention will be further developed in conjunction with the accompanying drawings and embodiments. Detailed description.

Referring to FIG. 1 , the host 300 of the embodiment of the present invention is a computer host, which includes a casing 200 . A switch device 100 is provided on one side of the casing 200. The host computer 300 further includes electronic components such as a main board and a hard disk mounted in the casing 200 to implement various functions. The present embodiment is mainly related to the switch device 100.

Referring to FIG. 2, the switch device 100 includes a button 10, a support plate 30, and a circuit board 70. The button 10 is mounted on the support plate 30 and can be controlled to be in contact with the circuit board 70.

Referring to FIGS. 3 and 4, the button 10 includes a knob 11 and a push rod 13 fixedly coupled to the knob 11. The knob 11 is substantially in the shape of a disk, and the outer side wall is provided with two dimples 111 for facilitating the touch with a finger. The circumferential surface of the knob 11 extends radially outward to form two opposite limiting protrusions 113. The thickness of the limiting projection 113 is smaller than the thickness of the knob 11. The limiting protrusion 113 extends perpendicularly to one side of the push rod 13 to form a hook 115. The action of the hook 115 prevents the knob 11 from coming off the support plate 30.

The support plate 30 is substantially square, and a circular through hole 31 for mounting the knob 11 is opened in the middle portion. A substantially annular blocking portion 33 is formed on the side wall of the through hole 31 along the circumferential direction of the through hole 31. The thickness of the blocking portion 33 is smaller than the thickness of the support plate 30, and can be resisted by the limiting element protrusion 113 of the button 10 to prevent the limiting protrusion 113 from passing through the through hole 31. A notch 331 corresponding to the limiting protrusion 113 is further disposed on the blocking portion 33. The width of the notch 331 is slightly larger than or equal to the width of the limiting protrusion 113 to ensure that the limiting protrusion 113 can pass through the notch 331. Referring to FIG. 4 and FIG. 5 together, the blocking portion 33 is further provided with two elongated sliding grooves 333 communicating with the corresponding notches 331 and extending circumferentially along the through holes 31. The chute 333 can be used to receive the hook 115 of the knob 11. The hook 115 includes a sliding portion 1151 and a hook portion 1153 connected thereto. The width of the sliding slot 333 is slightly larger than the thickness of the sliding portion 1151, and the depth of the sliding slot 333 is slightly smaller than the length of the sliding portion 1151, so when the hook 115 is inserted into the sliding slot 333 The sliding portion 1151 can slide in the sliding slot 333, and the hook portion 1153 can be located outside the sliding slot 333 and abut against the sidewall of the support plate 30.

The switching device 100 also includes a torsion spring 40. The torsion spring 40 is substantially cylindrical and includes a spring body 41 and a first spring arm 43 and a second spring arm 45 at both ends of the spring body 41. The metal coils forming the spring body 41 have a certain gap in the axial direction, so that the spring body 41 can accumulate the torsional elastic potential energy on the one hand, and can compress and accumulate the compressive elastic potential energy on the other hand. The first spring arm 43 and the second spring arm 45 are approximately 90 degrees. Referring to FIG. 4 together, a side of the knob 11 opposite to the support plate 30 is further provided with a receiving groove 117 for receiving a partial torsion spring 40. The receiving groove 117 includes a first receiving portion 118 surrounding the push rod 13 and a second receiving portion 119 extending from the first receiving portion 118 toward the circumferential surface of the knob 11 . The partial spring body 41 of the torsion spring 40 can be received in the first receiving portion 118, and the first spring arm 43 can be received in the second receiving portion 119.

The switch device 100 further includes a positioning plate 50 and two screws 60. The positioning plate 50 is substantially disk-shaped, and a through hole 51 through which the push rod 13 of the button 10 passes is opened in the middle portion. A receiving groove 53 for receiving a partial torsion spring 40 is further disposed on a side opposite to the supporting plate 30. The accommodating groove 53 includes a first accommodating portion 531 surrounding the through hole 51 and a second accommodating portion 533 extending from the first accommodating portion 531 toward the circumferential surface of the positioning plate 50. The partial spring body 41 of the torsion spring 40 can be received in the first receiving portion 531 , and the second spring arm 45 can be received in the second receiving portion 533 . The opposite side of the positioning plate 50 and the support plate 30 further extend to form two opposite brackets 55. A locking hole 551 is defined in each bracket 55. The screw 60 can pass through the locking hole 551 to fix the positioning plate 50 to the support plate 30.

The circuit board 70 can be of any shape with an elastic contact 71 disposed thereon. When the elastic contact piece 71 is subjected to the pressure of the push rod 13 of the push button 10, the elastic contact piece 71 is elastically deformed to turn on the circuit on the circuit board 70. After the pressure is released, the elastic contact 71 will return to the original The circuit on the circuit board 70 is disconnected.

When the assembly is performed, the torsion spring 40 is first received in the accommodating groove 53 of the positioning plate 50, and the partial spring body 41 of the torsion spring 40 is received in the first accommodating portion 531, and the second spring arm 45 is received in the second accommodating portion. Within 533. The positioning plate 50 is fixed to the support plate 30 by two screws 60. The button 10 is mounted in the through hole 31 of the support plate 30 and the push rod 13 is bored in the torsion spring 40. When the button 10 is installed, the second limiting protrusions 113 are respectively passed through the notches 331 of the supporting plate 30, and then the knob 11 is rotated to cause the hooks 115 on the limiting protrusions 113 to enter the sliding grooves 333 of the supporting plate 30. Under the action of the hook portion 1153 of the hook 115 and the support plate 30, the button 10 is relatively firmly mounted in the through hole 31. At this time, the partial spring body 41 of the torsion spring 40 is housed in the first housing portion 118, and the first spring arm 43 is housed in the second housing portion 119. Finally, the support plate 30 and the circuit board 70 are commonly mounted on the casing 200 of the main body 300, and the push rod 13 of the button 10 is opposed to the elastic contact 71 of the circuit board 70.

When the switch device 100 is in the normal state, since the limit protrusion 113 of the knob 11 always abuts against the blocking portion 33 on the support plate 30, when the knob 11 is directly pressed at this time, the push rod 13 is not moved to squeeze the elastic touch. Slice 71. When the switch device 100 needs to be turned off, the knob 11 can be first rotated by a certain angle so that the limiting protrusion 113 of the knob 11 is located opposite to the notch 331. In this process, the first spring arm 43 rotates in a direction away from the second spring arm 45 to elastically deform the torsion spring 40. At this time, since the width of the notch 331 is larger than the limiting protrusion 113, the pressing knob 11 can pass the limiting protrusion 113 through the notch 331, so that the push rod 13 presses the elastic contact 71 of the circuit board 70 to turn on the circuit. At this time, the torsion spring 40 sleeved on the push rod 13 is in a compressed state. After the pressure is removed, the torsion spring 40 first releases the compressive elastic force to cause the knob 11 to move backward, so that the pressure of the push rod 13 on the elastic contact piece 71 is released to cut the circuit. When the limiting protrusion 113 of the knob 11 is disengaged from the notch 331, the torsion spring 40 starts to release the elastic potential of the twisting, so that the knob 11 is reversed. Rotate and eventually reset.

The switch device 100 of the embodiment of the present invention not only has the advantages of simple structure, convenient operation, and the like, and can be pressed by rotating the knob 11 by a certain angle during operation, thereby effectively preventing the operator from accidentally touching the knob 11 The switching device 100 is turned off by mistake, and has better erroneous operation prevention characteristics.

It can be understood that the dimples 111 on the knob 11 can also be omitted. The number of the limiting protrusions 113 may also be one or more than two, and the number of the notches 331 should also correspond thereto.

If the second spring arm 45 of the torsion spring 40 is directly fixed to the support plate 30, the positioning plate 50 can also be omitted. For example, the side wall of the through hole 31 of the support plate 30 can be opened with the second spring arm 45 accommodating the torsion spring 40. Set the slot.

If the knob 11 is pressed and then manually returned to the initial state, that is, the torsion spring 40 can be omitted when the knob 11 is not required to have the automatic reset function.

In addition, the switch device 100 provided by the present invention can also be applied to fields other than the computer mainframe 300, such as a machine tool, an electric control box, and the like.

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 it is not possible to limit the scope of the patent application of the present invention. 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.

100‧‧‧Switching device

10‧‧‧ button

30‧‧‧Support board

70‧‧‧ boards

Claims (18)

A switch device includes a button, a support plate and a circuit board, the button comprises a knob and a push rod connected to the knob, the support plate is provided with a through hole for mounting the knob, and the circuit board is provided with an elastic contact piece, The improvement is that the knob is provided with a limiting protrusion, and the side wall of the through hole is provided with a blocking portion that abuts the limiting protrusion, and the blocking portion is provided with a notch, and the limiting protrusion passes through the notch The push rod is in contact with the elastic contact piece. The switch device of claim 1, wherein the switch device further comprises a torsion spring, the two ends of the torsion spring being respectively connected with the knob and the support plate to provide a torsional elastic restoring force to the knob. The switch device of claim 2, wherein the torsion spring is sleeved on the push rod, and the torsion spring is axially compressed to provide a translational elastic restoring force to the push rod. The switch device of claim 3, wherein the torsion spring comprises a spring body and a first spring arm and a second spring arm at two ends of the spring body, the knob is provided with a receiving groove, the receiving groove comprises The first receiving portion surrounding the push rod and the second receiving portion connected to the first receiving portion are received in the first receiving portion, and the first spring arm is received in the second receiving portion. The switch device of claim 4, wherein the switch device further includes a positioning plate, the positioning plate is fixed to the support plate, and the positioning plate is provided with a receiving groove for receiving a portion of the torsion spring. The switch device of claim 5, wherein the positioning plate is provided with a through hole through which the push rod passes, the receiving groove includes a first receiving portion surrounding the through hole and the first receiving portion The second receiving portion of the torsion spring is received in the first receiving portion, and the second spring arm of the torsion spring is received in the second receiving portion. The switch device according to claim 1, wherein the knob is in the form of a disk, and the limit is convex. The circumferential surface of the knob is formed to extend radially outward, and the width of the notch is greater than or equal to the width of the limiting protrusion. The switch device of claim 1, wherein the limiting protrusion is provided with a hook, the hook comprises a sliding portion and a hook portion connected to the sliding portion, the blocking portion is further provided with the notch a sliding slot extending in the circumferential direction of the through hole, the sliding portion is slidable in the sliding slot, and the hook portion is engageable with the supporting plate. The switch device of claim 1, wherein the knob is provided with a recess for facilitating finger operation. A main body includes a casing and a switch device mounted on the casing, the switch device includes a button, a support plate and a circuit board, the button includes a knob and a push rod connected to the knob, and the support plate is opened to accommodate the a through hole of the knob, the circuit board is provided with an elastic contact piece, and the improvement is that the knob is provided with a limiting protrusion, and the side wall of the through hole is provided with a blocking portion that abuts the limiting protrusion, the blocking portion The upper opening is provided with a notch, and the limiting protrusion passes through the notch to bring the push rod into contact with the elastic contact piece. The main body of claim 10, wherein the switch device further comprises a torsion spring, the two ends of the torsion spring being respectively connected with the knob and the support plate to provide a torsional elastic restoring force to the knob. The main body of claim 11, wherein the torsion spring is sleeved on the push rod, and the torsion spring is axially compressed to provide a translational elastic restoring force to the push rod. . The main body of claim 12, wherein the torsion spring comprises a spring body and a first spring arm and a second spring arm at two ends of the spring body, the knob is provided with a receiving groove, and the receiving groove comprises a surrounding The first receiving portion of the push rod and the second receiving portion connected to the first receiving portion are received in the first receiving portion, and the first spring arm is received in the second receiving portion. The host device of claim 13, wherein the switch device further includes a positioning plate, the positioning plate is fixed to the support plate, and the positioning plate is provided with a receiving portion for receiving the torsion spring. groove. The main body of claim 14, wherein the positioning plate is provided with a through hole through which the push rod passes, the receiving groove includes a first receiving portion surrounding the through hole and the first The second receiving portion of the torsion spring is received in the first receiving portion, and the second spring arm of the torsion spring is received in the second receiving portion. The main body of claim 10, wherein the knob is in the form of a disk, and the limiting protrusion is formed by extending a circumferential surface of the knob radially outward, and the width of the notch is greater than or equal to the limiting protrusion. The width. The main body of claim 10, wherein the limiting protrusion is provided with a hook, the hook comprises a sliding portion and a hook portion connected to the sliding portion, and the blocking portion is further configured to communicate with the notch And a sliding slot extending along the circumferential direction of the through hole, the sliding portion is slidable in the sliding slot, and the hook portion is engageable with the supporting plate. The main body of claim 10, wherein the knob is provided with a pit for easy finger operation.