CN104021951A - Switching device against surge and electromagnetic interference - Google Patents

Abstract

The present invention is a switch device for preventing surge and electromagnetic interference, including a shell, a cover body and a base body to enclose an accommodating space, the top surface of the cover body is an outer surface and is connected to the side ring surface, a recess is provided on the outer surface, the recess has a bottom wall, and the bottom wall is provided with an opening; a circuit device, including a circuit board and a switch, the circuit board is fixed on the base body, the circuit board has a plurality of through holes, the switch has a base and a conductive terminal device is provided thereon, the conductive terminal device includes a plurality of connecting terminals, each connecting terminal is passed through and directly fixed in one of the through holes of the circuit board, so as to directly fix the conductive terminal device on the circuit board. In this way, the effects of reducing the failure rate, simplifying the structure, reducing the volume, reducing the cost, improving the assembly efficiency and preventing the switch from being touched by mistake are achieved.

Description

Switching device against surge and electromagnetic interference

field of invention

The invention relates to a switch device, in particular to a switch device for preventing surge and electromagnetic wave interference. .

Background technique

The button of the switch of the conventional switch device is separated from the contacts on the circuit board, so additional components are required to indirectly electrically connect the buttons of the switch to the contacts on the circuit board. But in this way, the switch device is prone to failure due to poor contact, and many problems such as complex structure, large volume, high manufacturing cost and low assembly efficiency arise.

Furthermore, a general switch device includes a cover body, the cover body has an outer surface, and the button of the switch protrudes from the outermost side of the side of the outer surface of the cover body, obviously exceeding the highest point of the outer surface of the cover body. .

However, the button of the switch is not protected, so it is easy to be touched by mistake, which will cause the following problems: one, the sudden power failure of the electrical or automatic device during operation, which may easily cause non-pre-alarm failures of the machine , especially for the losses caused by production lines that need to operate 24 hours a day, it is even more difficult to estimate. Second, start the machine suddenly during non-working hours, causing injuries or even death to people near or inside the machine.

Contents of the invention

In view of this, the applicant improves the conventional switch device and provides a switch device for preventing surge and electromagnetic interference.

The main purpose of the present invention is to provide a switch device for preventing surge and electromagnetic interference, which has the functions of reducing switch failure rate, simplifying structure, reducing volume, reducing manufacturing cost and improving assembly efficiency.

Another object of the present invention is to provide a switch device for preventing surge and electromagnetic interference, which has the function of preventing accidental switch touches, protects the safety of users and accurately controls the opening and closing of the switch device.

In order to achieve the above object, the switch device for preventing surge and electromagnetic interference of the present invention includes a casing and a circuit device. The housing has a cover and a seat, the cover and the seat form an accommodating space, the top surface of the cover is an outer surface and the outer surface is connected to one side of the ring surface, and on the outer surface A recess is provided, the recess has a bottom wall, and the bottom wall is provided with an opening; a circuit device includes a circuit board and a switch, the circuit board is fixed on the seat in the accommodating space, the circuit board A plurality of through holes are opened, the switch has a base, and a conductive terminal device is provided on the bottom of the base, the conductive terminal device includes a plurality of connecting terminals, and each connecting terminal is passed through and directly fixed in one of the through holes of the circuit board , so that the conductive terminal device is directly fixed on the circuit board.

The circuit device further includes an input terminal, a surge absorber electrically connected to the input terminal, an electromagnetic wave interference filter electrically connected to the surge absorber, and a surge absorber electrically connected to the and a grounding piece of the grounding end of the EMI filter and an electrical connection to the output end of the EMI filter.

The switch further includes an operating part, which is arranged on the base and is used to open and close the switch. The operating part has a top end and is directly arranged at the position corresponding to the opening of the cover on the bottom wall of the recess. on this circuit board.

The recess further includes a vertical wall connected to the bottom wall, the vertical wall has a first end and a second end, the first end of the vertical wall is connected to the outer surface, and the second end of the vertical wall The end is connected to the bottom wall, and the top end of the operating part is lower than the first end of the vertical wall.

The cover is provided with a notch on the side ring surface, and the notch communicates with the recess, so that the cover is open on the side close to the recess.

The operation part of the switch is passed through the opening of the bottom wall of the concave part.

The surge absorber includes multiple surge suppressors and a lightning arrestor.

The electromagnetic interference filter includes a filtering device and four capacitors.

Compared with the prior art, the technical means provided by the present invention has the following advantages:

1. The conductive terminal device is directly fixed on the circuit board. Thereby, the switch does not have the problem of poor contact, which reduces the damage rate of the switch device.

2. The conductive device is directly fixed on the circuit board, in other words, the conductive device does not need to be electrically connected to the circuit board through other components. Thereby, the structure of the switch device can be simplified, and the volume can be further reduced, the manufacturing cost can be reduced, and the assembly efficiency can be improved, so that other components of the circuit device can have more space for adjusting their arrangement positions, and the switch device can achieve better operating performance.

3. The top end of the operating part of the switch is lower than the first end of the vertical wall of the concave part. Thereby, the user has no chance to accidentally touch the operation part of the switch, thereby achieving the effect of preventing mistaken touch of the switch, protecting the safety of the user and accurately controlling the opening and closing of the switch device.

Description of drawings

Fig. 1 is the three-dimensional schematic view of preferred embodiment of the present invention;

Fig. 2 is a three-dimensional exploded schematic diagram of a preferred embodiment of the present invention;

Fig. 3 is a sectional view of a preferred embodiment of the present invention;

Fig. 4 is the front view of preferred embodiment of the present invention;

Fig. 5 is the front view of the circuit device of the preferred embodiment of the present invention disposed on the base;

Fig. 6 is a circuit diagram of a preferred embodiment of the present invention.

Detailed ways

Please refer to FIG. 1 and FIG. 2 , which are perspective schematic diagrams and perspective exploded schematic diagrams of a preferred embodiment of the switch device for preventing surge and electromagnetic interference of the present invention. The anti-surge and electromagnetic interference switch device 1 includes a casing 10 and a circuit device 20 .

The casing 10 includes a cover 11 and a seat 12 . The cover 11 includes an outer surface 111 . In this embodiment, the cover body 11 includes a top surface and at least one side ring surface 112, the outer surface 111 refers to the top surface of the cover body 11 in this embodiment, and the side ring surface 112 and the outer surface 111 connected together. In other embodiments, the outer surface 111 may also be the side ring surface 112 of the cover. The outer surface 111 of the cover 11 is provided with a recess 13 , and the side ring surface 112 of the cover 11 is provided with a notch 112A.

The recess 13 has a bottom wall 131 and a vertical wall 132 connected to the bottom wall 131 , and an opening 133 is defined at the bottom wall 131 . In this embodiment, three sides of the bottom wall 131 are directly connected to the vertical wall 132, so that the vertical wall 132 surrounds three sides of the bottom wall 131, that is, it is arranged on the bottom in a U shape as shown in FIG. 2 . On the wall 131 , and the fourth surface communicates with the side annular surface 112 to form a notch 112A on the side annular surface 112 . The upper and lower ends of the vertical wall 132 are respectively a first end 132A and a second end 132B. The first end 132A of the vertical wall 132 is connected to the outer surface 111 of the cover 11 , and the second end 132B is connected to the bottom wall 131 .

Please refer to FIG. 1 and FIG. 2, in this embodiment, the cover body 11 has a notch 112A on its side ring surface 112 to communicate with the recess 13, whereby the recess 13 is close to the outer surface of the cover body. Both the side of the surface 111 and the side of the side ring surface 112 of the cover 11 are open. In other embodiments, the side annular surface 112 of the cover body 11 may not have the notch 112A, so that the recess 13 close to the side annular surface 112 of the cover body 11 is closed, and the recess 13 is close to The outer surface 111 of the cover 11 is open. Alternatively, the recess 13 is closed near the outer surface 111 of the cover 11, and the side ring surface 112 of the cover 11 is provided with the notch 112A, so that the recess 13 is close to the side ring surface of the cover 11. One side of 112 is open, and it is all right. The cover body 11 and the base body 12 form a containing space 120 .

Please refer to Fig. 2 and shown in Fig. 6, this circuit device 20 comprises a circuit board 21, a switch 22, an input terminal 23, two fuses F1, F2, a surge absorber 24, an electromagnetic interference filter 25, an The grounding element 26 and an output terminal 27 .

The circuit board 21 is disposed inside the casing 10 . In this embodiment, the circuit board 21 is fixed on the base body 12 and located in the accommodating space 120 of the base body 12 .

The switch 22 includes an operating portion 221 and a base 222 . The operation part 221 is disposed on the base 222 and used for opening and closing the switch 22 . In this embodiment, the operating part 221 is a key that is turned on and off by tilting up and down left and right. In other embodiments, the operation part 221 may also be a button in other operation modes.

Please refer to FIG. 1 to FIG. 4 , wherein the operating portion 221 of the switch 22 has a top end, the position of the operating portion 221 is corresponding to the position of the opening 133 of the recess 13, and the top end of the operating portion 221 is lower than the The first end 132A of the concave portion 13 .

In this embodiment, the operating portion 221 is passed through the opening 133 and protrudes into the concave portion 13 , but the depth of the operating portion 221 protruding into the concave portion 13 is smaller than that between the first and second ends 132A, 132B of the vertical wall 132 The distance, as shown in Figure 1, Figure 3 and Figure 4, and thereby exposed for operation. The operation part 221 is not limited to the structure in this embodiment as long as it is operable, so the operation part 221 of the switch 22 may not pass through the opening 133, but hide in the accommodating space 120, but it is still available for use. The user uses tools or fingers to pass through the opening 133 to move the operation part 221 .

Please refer to FIG. 3 and FIG. 5 , the base 222 includes a conductive terminal device 223 . The conductive terminal device 223 is directly fixed on the circuit board 21 to directly fix the switch 22 on the circuit board 21 . In this embodiment, the circuit board 21 defines a plurality of through holes 211 . The conductive terminal device 223 includes a plurality of connection terminals 223A. Each of the connecting terminals 223A is preferably made of conductive metal. Each of the connection terminals 223A is disposed on the bottom of the base 222 , and each of the connection terminals 223A passes through and is fixed in one of the through holes 211 of the circuit board 21 . Of course, the conductive terminal device 223 can also be in other forms, and the conductive terminal device 223 can also be directly fixed on the circuit board 21 in other ways, which is not limited thereto. As for the internal structure of the base 222 is a conventional technology, it will not be described in detail.

The input terminal 23 is disposed on the circuit board 21 and is electrically connected to the conductive terminal device 223 of the base 222 of the switch 22 , as shown in FIGS. 2 and 6 .

As shown in FIGS. 2 and 6 , the surge absorber 24 includes a plurality of surge suppressors 241 , 242 and a lightning arrester 243 . In this embodiment, the surge absorber 24 has two surge suppressors 241 and 242 . The two surge suppressors 241 , 242 are electrically connected to the conductive terminal device 223 of the base 222 of the switch 22 via the two fuses F1 , F2 respectively. The two surge suppressors 241 , 242 and the lightning arrester 243 are arranged in series. The surge absorber 24 is mainly used to absorb abnormal surges generated by the external environment. Thus, the surge will not affect the switch device 1 and an electrical appliance (not shown) connected to the switch device 1 .

Please refer to FIG. 2 , FIG. 3 and FIG. 6 , the EMI filter 25 includes a filtering device L1 and four capacitors C1 , C11 , C12 and C6 . The EMI filter 25 is electrically connected to the conductive terminal device 223 of the base 222 of the switch 22 via the two fuses F1 and F2 . When the electrical appliances related to the switch device 1 are subjected to electromagnetic wave interference, the electromagnetic wave interference filter 25 will completely eliminate the electromagnetic wave interference. Thereby, the relevant electrical appliances will not be affected by electromagnetic waves.

The grounding element 26 is electrically connected to the lightning arrester 243 and the two capacitors C11 and C12. The grounding element 26 directs the surge wave and the electromagnetic wave into the ground, as shown in FIG. 6 .

The output terminal 27 is electrically connected to the capacitor C6 to further eliminate noise.

Please refer to FIG. 1, FIG. 2 and FIG. 6, when the user toggles the operating part 221 of the switch 22 to the on state, the current will pass through the conductive terminal device 223, the two fuses F1, F2 from the input terminal 23 in sequence. , the surge absorber 24 and the electromagnetic wave interference filter 25 , and finally transmit power to the electrical appliance (not shown) through the output terminal 27 . When the user operates the operating portion 221 of the switch 22 to the off state, the current stops inputting to the electrical appliance (not shown).

Compared with the prior art, the technical means provided by the present invention has the following advantages:

1. The conductive terminal device 223 is directly fixed on the circuit board 21 . Thereby, the switch 22 does not have the problem of poor contact, which reduces the damage rate of the switch device 1 .

2. The conductive terminal device 223 is directly fixed on the circuit board 21 , in other words, the conductive terminal device 223 does not need to be electrically connected to the circuit board 21 through other secondary components. Thereby, the structure of the switch device 1 is simplified, and the volume and manufacturing cost can be further reduced, so that other components of the circuit device 20 have more space to adjust their arrangement positions, so that the switch device can achieve a higher level. Excellent operating performance.

3. The connection terminals 223 of the conductive terminal device 223 are directly passed through and fixed on the through holes 211 of the circuit board 21 . Thereby, the conductive terminal device 223 is easy to assemble on the circuit board 21 to improve the assembly efficiency of the switch device 1 .

4. The top end of the operating portion 221 of the switch 22 is lower than the first end 132A of the vertical wall 132 of the recess 13 . Thereby, the user has no chance to accidentally touch the operation portion 221 of the switch 22 to achieve the effect of preventing the switch 22 from being accidentally touched, further protecting the safety of the user and accurately controlling the opening and closing of the switch device 1 . The effect is better when the top of the operating portion 221 of the switch 22 is lower than the height of the first ends 132A of all the vertical walls 132 of the recess 13 . Wherein, the operating portion 221 of the switch 22 may not pass through the opening 133 of the bottom wall of the recess 13, but be hidden in the accommodating space 120, and this embodiment has the best anti-mistouch effect.

5. The notch 112A of the side annular surface 112 of the cover body 11 is connected to the recess 13 . In this way, when the position of the switch device 1 is affected by other environmental factors, for example, the switch position is adjacent to a wall or in a narrow space, the user can choose from the outer surface 111 of the cover 11 or from the notch. 112A inserts a finger into the concave portion 13 to operate the operation portion 221 of the switch 22 arbitrarily. Not affected by the external environment.

6. The notch 112A of the side ring surface 112 of the cover body 11 communicates with the recess 13 . Thereby, the user can smoothly insert fingers into the concave portion 13 from the notch 112A to operate the operation portion 221 of the switch 22 . It is not affected by the depth of the concave portion 13 .

The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the description and drawings of the present invention should be included in the same way. within the patent scope of the present invention.

Claims (10)

1. protrusion-dispelling involves a switching device for Electromagnetic Interference, comprising:

One housing (10), this housing (10) has a lid (11) and a pedestal (12), this lid (11) forms an accommodation space (120) with this pedestal (12), this lid (11) end face is that an outer surface (111) and this outer surface (111) are connected to a side ring surface (112), and be provided with a recess (13) in this outer surface (111), this recess (13) has a diapire (131), and this diapire (131) is provided with an opening (133);

One circuit arrangement (20), comprise a circuit board (21) and a switch (22), this circuit board (21) is fixedly arranged on the pedestal (12) in this accommodation space (120), this circuit board (21) is offered multiple perforation (211), this switch (22) has a pedestal (222), and this pedestal (222) bottom is provided with a conductive terminal device (223), this conductive terminal device (223) comprises multiple splicing ears (223A), respectively this splicing ear (223A) wears and is directly fixed in one of them perforation (211) of this circuit board (21), so that this conductive terminal device (223) is directly fixedly arranged on this circuit board (21).

2. protrusion-dispelling according to claim 1 involves the switching device of Electromagnetic Interference, it is characterized in that: this circuit arrangement (20) more comprises an input (23), one is electrically connected at the surge absorber (24) of this input (23), one is electrically connected at the Electromagnetic Interference filter (25) of this surge absorber (24), one earthing member (26) and that is electrically connected at the earth terminal of this surge absorber (24) and this Electromagnetic Interference filter (25) is electrically connected at the output (27) of this Electromagnetic Interference filter (25).

3. protrusion-dispelling according to claim 1 involves the switching device of Electromagnetic Interference, it is characterized in that: this switch (22) more includes an operating portion (221), this operating portion (221) is located at this pedestal (222) above and in order to open and close this switch (22), this operating portion (221) has a top and is set directly on this circuit board (21) in the position of diapire (131) upper shed (133) of recess (13) corresponding to this lid (11).

4. involve the switching device of Electromagnetic Interference according to the protrusion-dispelling described in claim 1 or 3, it is characterized in that: this recess (13) more includes a vertical wall (132) being connected with this diapire (131), this vertical wall (132) has a first end (132A) and one second end (132B), the first end (132A) of this vertical wall (132) is linked to this outer surface (111), second end (132B) of this vertical wall (132) is linked to this diapire (131), and the top of this operating portion (221) is lower than the first end (132A) of this vertical wall (132).

5. involve the switching device of Electromagnetic Interference according to the protrusion-dispelling described in claim 1 or 3, it is characterized in that: this lid (11) is provided with a recess (112A) on side ring surface (112), this recess (112A) is communicated in this recess (13), makes this lid (11) be open shape near these recess (13) one sides.

6. protrusion-dispelling according to claim 3 involves the switching device of Electromagnetic Interference, it is characterized in that: the operating portion (221) of this switch (22) is arranged in this recess (13) and locates in the opening (133) of its diapire (131).

7. protrusion-dispelling according to claim 2 involves the switching device of Electromagnetic Interference, it is characterized in that: this surge absorber (24) comprises that multiple surgings suppress part (241,242) and a lightning-arrest pipe (243).

8. protrusion-dispelling according to claim 2 involves the switching device of Electromagnetic Interference, it is characterized in that: this Electromagnetic interference filter (25) comprises a filter (L1) and four electric capacity (C1, C11, C12, C6).

9. protrusion-dispelling according to claim 2 involves the switching device of Electromagnetic Interference, it is characterized in that: this switch (22) more includes an operating portion (221), this operating portion (221) is located at this pedestal (222) above and in order to open and close this switch (22), this operating portion (221) has a top and is set directly on this circuit board (21) in the position of diapire (131) upper shed (133) of recess (13) corresponding to this lid (11).

10. protrusion-dispelling according to claim 2 involves the switching device of Electromagnetic Interference, it is characterized in that: this recess (13) more includes a vertical wall (132) being connected with this diapire (131), this vertical wall (132) has a first end (132A) and one second end (132B), the first end (132A) of this vertical wall (132) is linked to this outer surface (111), second end (132B) of this vertical wall (132) is linked to this diapire (131), and the top of this operating portion (221) is lower than the first end (132A) of this vertical wall (132).