CN210015809U - Micro switch assembly and micro switch system - Google Patents

Abstract

The utility model provides a micro-gap switch component, which comprises a micro-gap switch and a trigger pressure head which can be pressed against or separated from the micro-gap switch; the micro switch comprises a switch elastic sheet and a switch button which can be in an open or closed state under the action of the switch elastic sheet; the microswitch assembly further comprises a protection elastic sheet, the protection elastic sheet is located between the trigger pressure head and the switch elastic sheet and covers the switch elastic sheet, and under the action of the trigger pressure head, the protection elastic sheet is elastically deformed to drive the switch elastic sheet to press the switch button and trigger the microswitch to be switched on. The utility model discloses still provide an use the utility model discloses a micro-gap switch system of micro-gap switch subassembly. Compared with the prior art, the utility model discloses a micro-gap switch subassembly reliability is high, makes the utility model discloses a micro-gap switch system reliability is high.

Description

Micro switch assembly and micro switch system

technical field

The utility model relates to the field of electrical switches, in particular to a microswitch assembly and a microswitch system.

Background technique

At present, most of the projection devices are equipped with a standby circuit. If the projection device fails, it needs to be disassembled for maintenance. To ensure safety, a micro switch is connected in series in the standby circuit to connect components such as the top case and the maintenance cover.

In the related art, a micro switch includes a switch body, a switch spring piece fixed on the switch body, and a switch button fixed on the switch body and abutting against the switch spring piece. Press on the switch elastic sheet and trigger the switch button to conduct, so as to control the on or off of the micro switch.

However, when the micro switch of the related art is installed or directly pressed against the trigger pressure head, the switch elastic sheet is easily damaged, so that the reliability of the micro switch is low.

Therefore, it is necessary to provide a new micro switch assembly and micro switch system to solve the above technical problems.

Utility model content

The purpose of the present invention is to provide a micro-switch assembly with high reliability. When the micro-switch assembly is applied to the micro-switch system of the present invention, the reliability of the micro-switch system is high.

In order to achieve the above purpose, the present invention provides a micro switch assembly, which includes a micro switch, a trigger pressure head that can be pressed against or separated from the micro switch, and a protective elastic sheet; the micro switch includes a switch elastic sheet and A switch button that can be in an open or closed state under the action of the switch shrapnel; the protection shrapnel is located between the trigger pressure head and the switch shrapnel and is covered on the switch shrapnel. Under the action of the protective elastic sheet, elastic deformation occurs to drive the switch elastic sheet to press against the switch button and trigger the micro switch to conduct.

Further, the protective elastic sheet includes a fixed plate and a bent portion, the fixed plate is fixedly connected with the micro switch, and the bent portion is connected to the fixed plate and covers at least one orientation of the protective elastic sheet. , the triggering head can slide to the bending part from at least one direction, and trigger the bending part to press the switch elastic sheet.

Further, the bending part includes a connecting plate and a first pressing body, the connecting plate is connected to the extension end of the fixing plate and is located above the top surface of the micro switch, and the first pressing body The connecting plate is connected and covered above the switch elastic sheet, the triggering head presses the first pressing body against the switch elastic sheet, and then drives the switch elastic sheet to trigger the micro switch guide. Pass.

Further, the first pressing body is in the shape of a flat plate or a curved surface.

Further, the bending part further includes a second pressing body, the second pressing body is connected to the side of the first pressing body far away from the fixing plate, and is close to the top of the micro switch. The first pressing body and the second pressing body cover the switch elastic piece together, and the triggering pressure head is pressed against the first pressing body after transitioning through the second pressing body. A pressure body.

Further, the second pressing body is in the shape of a flat plate or a curved surface.

The present invention also provides a micro-switch system, which comprises the micro-switch assembly according to the present invention and a housing for installing the micro-switch assembly, and the micro-switch is fixed on the housing The trigger pressure head is installed on the side of the casing close to the protective elastic sheet, and the trigger pressure head can slide relative to the casing in various directions.

Further, the housing includes a housing main body and a support frame fixed to the housing main body, the triggering head is slidably connected to the housing main body, and the micro switch and the protective elastic sheet are respectively fixed to the housing main body. the support frame.

Further, the support frame includes a first main body part and a first fixing part, the first main body part is connected to the housing main body, and the first fixing part is fixed to the first main body part close to the trigger One side of the pressure head; the micro switch assembly is fixed to the first fixing part by means of screw connection.

Further, the support frame includes a second main body part and a second fixing part, the second main body part is connected to the housing main body, the second fixing part is connected to the second main body part and is close to the trigger one side of the indenter; the second fixing part includes a positioning plate and two snap arms fixed on opposite sides of the positioning plate; the micro switch assembly is snapped between the two snap arms .

Compared with the related art, the micro switch assembly of the present invention includes a micro switch, a trigger pressure head that can be pressed against or separated from the micro switch, and a protective shrapnel; the micro switch includes a switch shrapnel and a A switch button in an open or closed state under the action of the switch shrapnel; the protection shrapnel is located between the triggering head and the switch shrapnel and is covered on the switch shrapnel, and the protection shrapnel is located between the triggering head and the switch shrapnel and is covered on the switch shrapnel. Under the action, the protective elastic sheet is elastically deformed, so as to drive the switch elastic sheet to press against the switch button and trigger the conduction of the micro switch. In the above structure, the protection elastic sheet protects the switch elastic sheet, avoids installation damage, reduces the risk of being crushed by the triggering pressure head, and improves reliability. When the micro-switch assembly of the present invention is applied to the micro-switch system of the present invention, the reliability of the micro-switch system is high.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, under the premise of no creative work, other drawings can also be obtained from these drawings, wherein:

FIG. 1 is a schematic exploded view of the three-dimensional structure of the micro-switch and the protective shrapnel of the micro-switch assembly of the present invention;

2 is a three-dimensional structural assembly diagram of a micro switch, a protective shrapnel and a support frame of the micro switch assembly of the present invention;

3 is a three-dimensional assembly diagram of a micro switch, a protective elastic sheet and another support frame of the micro switch assembly of the present invention;

FIG. 4 is a schematic diagram 1 of a three-dimensional structure of Embodiment 1 of the micro-switch assembly of the present invention;

FIG. 5 is a second schematic view of the three-dimensional structure of Embodiment 1 of the micro-switch assembly of the present invention;

6 is a schematic diagram 1 of the three-dimensional structure of Embodiment 2 of the micro-switch assembly of the present invention;

FIG. 7 is a second three-dimensional structural schematic diagram of Embodiment 2 of the micro-switch assembly of the present invention;

FIG. 8 is a schematic three-dimensional structural diagram of Embodiment 3 of the micro-switch assembly of the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, but not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Referring to FIG. 1 , the present invention provides a micro switch assembly, which includes a micro switch 1 , a protective elastic sheet 2 , and a trigger pressure head 3 that can be pressed against or separated from the micro switch 1 .

The micro switch 1 includes a switch spring 11 and a switch button 12 that can be opened or closed under the action of the switch spring 11 , and the protection spring 2 is located between the trigger pressure head 3 and the switch spring 11 . and cover the switch elastic sheet 12; under the action of the trigger pressure head 3, the protective elastic sheet 2 is elastically deformed, so as to drive the switch elastic sheet 11 to press against the switch button 12 and trigger the Micro switch 1 is turned on.

As an optional embodiment, the micro switch 1 further includes a switch body 13 for installing the switch elastic sheet 11 and the switch button 12 ; the switch body 13 includes a top surface 131 and The bottom surface 132 and the side surface 133 connecting the top surface 131 and the bottom surface 132; the switch elastic sheet 11 is fixed on the top surface 131 and extends obliquely away from the switch body 13, and the switch elastic sheet 11 is connected to the The top surface 131 of the switch body 13 is spaced to form a hollow area 10 ; the switch button 12 is fixed on the top surface 131 of the switch body 13 and abuts against the switch spring 11 , and the switch button 12 is located in the hollow in area 10.

The protective elastic sheet 2 includes a fixing plate 21 fixed on the side surface 133 of the switch body 13 and a bending part 22 , the fixing plate 21 is fixedly connected with the micro switch 1 , and the bending part 22 is connected to the The fixing plate 21 covers at least one orientation of the protective elastic sheet 2, the triggering head 3 can slide to the bending part 22 from at least one orientation, and trigger the bending part 22 to press the switch The elastic sheet 11 drives the switch elastic sheet 11 to press against the switch button 12 and trigger the micro switch 1 to conduct.

It is worth mentioning that the Z-axis direction is perpendicular to the top surface 131 , the X-axis direction is perpendicular to the Z-axis direction and is on the same plane as the extending direction of the switch spring 11 , and the Y-axis direction is respectively the same as that of the The Z-axis direction and the X-axis direction are vertically arranged; the switch elastic piece 11 can reciprocate around the fixed point in the plane jointly enclosed by the Z-axis and the X-axis, and at the same time drive the switch button 12 along the The Z-axis direction moves up and down, so as to control the micro switch 1 to be turned on or off.

The present invention also provides a micro-switch system, which comprises the micro-switch assembly according to the present invention and a housing for installing the micro-switch assembly, and the micro-switch is fixed on the housing The trigger pressure head is installed on the side of the casing close to the protective elastic sheet, and the trigger pressure head can slide relative to the casing in various directions.

More preferably, in order to facilitate the installation of the micro switch and the protective elastic sheet, the housing includes a housing main body and a support frame fixed to the housing main body; the trigger pressure head is connected to the housing The main body, the micro switch and the protective elastic sheet are respectively fixed on the support frame.

In the process of practical application, supports with different structural forms can be selected according to the actual situation. Here, two alternative implementations are provided:

In a first optional embodiment, the micro switch assembly is fixed to the support frame by means of screw connection; specifically, the support frame includes a first main body part and a first fixing part, the first The main body part is connected to the housing main body, and the first fixing part is fixed to the side of the first main body part close to the trigger head; the micro switch assembly is fixed to the the first fixed part.

Further, for example, please refer to FIG. 1-2 and FIG. 4 at the same time, the support frame 42 includes a first main body portion 421 fixed to the housing main body 41 , and is disposed near the first main body portion 421 The first fixing part 422 on one side of the trigger head 3 and the screw 423 connected to the first fixing part 422; the side 133 is provided with a first through hole 130 therethrough, and the fixing plate 21 is provided with Through the second through hole 210 thereon, the first fixing portion 422 is provided with a threaded hole 4220 therethrough, and the screw 423 passes through the first through hole 130 and the second through hole 210 respectively. The threaded hole 4220 is threaded and fixed, and the fixing plate 21 is sandwiched between the switch body 13 and the first fixing portion 422 .

Of course, in this first optional embodiment, the screws 423 can also be replaced with bolts; or, the holes opened in the first fixing portion 422 can also be through holes, so that the screws or bolts pass through the holes in sequence. The first through hole 130 , the second through hole 210 and the through holes of the first fixing portion 422 are then screwed together with nuts, so that the micro switch assembly is fixed to the first fixing portion 422 .

More preferably, the material of the support frame 42 is not limited. In the first optional embodiment, the support frame 42 is preferably a sheet metal part.

In the second optional embodiment, the micro switch assembly is fixed to the support frame by means of snap-fastening; for details, please refer to FIG. 1 and FIG. 3 at the same time, the support frame 42 ′ includes A second main body part 421' and a second fixing part 422', the second main body part 421' is connected to the housing body, and the second fixing part 422' is connected to the second main body part 421' close to the The second fixing part 422' includes a positioning plate 4221' and two locking arms 4222' fixed on opposite sides of the positioning plate 4221'; It is buckled between the two buckle arms 4222'.

Preferably, in order to facilitate the installation of the micro switch assembly, the support frame 42' further includes a positioning column 4223' protruding from the positioning plate 4221'; Through hole 130', the fixing plate is provided with a fourth through hole 210' therethrough, and the positioning post 4223' respectively penetrates the third through hole 130' and the fourth through hole 210' and provides The positioning support makes the fixing of the micro switch 1 and the protective elastic sheet 2 more reliable, thereby further improving the stability of the micro switch system.

More preferably, the material of the support frame 42' is not limited. In the second optional embodiment, the support frame 42' is preferably made of resin material.

It is worth mentioning that, in the above two optional embodiments, the housing body and the support frame may be an integrally formed structure or a separate structure. Here, the housing body is preferably It is an integrally formed structure with the support frame, which makes the installation of the micro-switch and the protective elastic sheet more reliable, thereby improving the reliability of installation, and avoiding the micro-switch and the The positional deviation of the protective elastic sheet occurs inside, so as to ensure that the protective elastic sheet is within the pressing range of the trigger pressure head.

Here, it should be particularly pointed out that there are various structural forms of the bending portion 22, which can be specifically set according to the actual situation, and the triggering indenter 3 can control the bending portion of different structural forms by controlling the bending portion 22. The movement of 22 is to realize the on or off of the micro switch 1. In order to facilitate the understanding of the principle of the micro switch assembly of the present invention, three optional embodiments will be listed below for description, but not only Limited to these three implementations:

Embodiment 1

Referring to FIGS. 1-2 and 4-5, in the first embodiment, the triggering head 3 slides relative to the housing 4 along the Y-axis direction. At this time, the bending portion 22 includes The connecting plate 221 , the first pressing body 222 and the second pressing body 223 are connected to the extension end of the fixing plate 21 and located above the top surface 131 of the micro switch 1 . The pressing body 222 is connected to the connecting plate 221 and is covered above the switch elastic sheet 11 , and the second pressing body 223 is connected to the side of the first pressing body 221 away from the fixing plate 21 , and faces toward the side of the first pressing body 221 away from the fixing plate 21 . The direction close to the top surface 131 of the micro switch 1 extends obliquely, and the first pressing body 222 and the second pressing body 223 jointly cover the switch elastic sheet 11 .

The triggering head 3 is pressed against the first pressing body 222 after the transition of the second pressing body 222 , and the first pressing body 222 is pressed against the switch elastic piece 11 , and then The switch spring 11 is driven to trigger the micro switch 1 to conduct.

In Embodiment 1, the principle that the triggering head 3 controls the microswitch 1 to be turned on or off is as follows:

During the relative sliding process, the triggering indenter 3 first presses against the second pressing body 223, and the second pressing body 223 presses the triggering indenter 3 laterally (ie, along the Y axis) movement is converted into downward movement along the Z-axis direction, while the second pressing body 223 drives the first pressing body 222 to move downward along the Z-axis direction, the triggering head 3. Continue to move along the Y-axis direction until it is pressed against the first pressing body 222, so that the switch elastic sheet 11 is pressed against the switch button 12 and triggers the micro switch 1 to conduct.

In the above structure, the setting of the protective elastic sheet 2 avoids damage to the switch elastic sheet 11 during the installation process, effectively protecting the micro switch 1, and at the same time, the trigger pressure head 3 is not directly pressed against the The switch elastic sheet 11 reduces the risk of the switch elastic sheet 11 being crushed, and effectively improves the reliability of the micro switch assembly, thereby making the micro switch system using the micro switch assembly high reliability.

More preferably, the area of the first pressing body 222 is larger than the area of the switch spring 11 , and the first pressing body 222 covers the switch spring 11 , which effectively ensures that the switch spring 11 is in the closed position. Within the pressing range of the bending portion 22, the phenomenon that the switch elastic sheet 11 cannot work normally due to the lateral dislocation of the switch elastic sheet 11 along the Y-axis direction is avoided. The larger first abutting body 222 increases the stroke for the triggering indenter 3, so that the pressing process is smoother and more stable, thereby ensuring the conduction or closing of all parts. The reliability of the micro switch 1 is further improved, and the reliability is high.

Further, the first abutting body 222 is arranged in parallel with the switch elastic sheet 11 , so that when the first abutting body 222 abuts against the switch elastic sheet 11 , the two are in surface contact to ensure a contact area. It is large enough to reduce the pressure on the contact surface, thereby avoiding damage to the switch spring 11 due to excessive pressure stress, and further improving the reliability of the micro switch assembly.

Further, the shapes of the first pressing body 222 and the second pressing body 223 are not limited. For example, in Embodiment 1, the first pressing body 222 and the second pressing body 223 The pressing bodies 223 are all flat; for another example, the first pressing bodies 222 and the second pressing bodies 223 may both be curved surfaces; of course, the first pressing bodies 222 and the second pressing bodies 222 One of the pressing bodies 223 is flat, and the other is curved.

Embodiment 2

Please refer to FIGS. 1-2 and 6-7. The specific structure and the positional connection relationship of each structure in the second embodiment are the same as those in the embodiment, and the same parts will not be repeated here, but the trigger voltage of the second embodiment The principle in which the head 3 controls the on or off of the micro switch 1 is different from that in the first embodiment. In the second embodiment, the triggering head 3 slides relative to the housing 4 along the X-axis direction. At this time, the bending portion 22 a at least includes a connection extending from the fixing plate 21 and located above the top surface 131 . The plate 221a and the first pressing body 222a extending obliquely from the connecting plate 221a in a direction away from the top surface 131 and located above the top surface 131, the first pressing body 222a covers the switch elastic sheet 11; The triggering head 3 presses the first pressing body 222a toward the switch elastic sheet 11, thereby driving the switch elastic sheet 11 to trigger the micro switch 1 to conduct.

In Embodiment 2, the principle that the triggering head 3 controls the microswitch 1 to be turned on or off is as follows:

During the relative sliding process, the triggering head 3 slides to the first pressing body 222 through the connecting plate 221a along the X-axis direction, and makes the first pressing body 222a move toward the switch. The elastic sheet 11 is pressed in the direction, so that the switch elastic sheet 11 moves downward along the Z-axis, so as to drive the switch elastic sheet 11 to squeeze the switch button 12 until the micro switch 1 is turned on.

During the entire relative sliding movement process, the switch shrapnel 11 is deformed under the protection of the protection shrapnel 2 , and the trigger pressure head 3 will not directly contact the switch shrapnel 11 , which prevents the switch shrapnel 11 from being damaged. The resulting risk of circuit disconnection improves the use reliability of the micro switch assembly, so that the reliability of the micro switch system applying the micro switch assembly is high.

Further, the first abutting body 222a is arranged in parallel with the switch elastic sheet 11, and the arrangement makes the first abutting body 222a abut against the switch elastic sheet 11, the two are in surface contact, ensuring a contact area It is large enough to reduce the pressure on the contact surface, thereby avoiding damage to the switch spring 11 due to excessive pressure stress, and further improving the reliability of the micro switch assembly.

Further, the shape of the first pressing body 222a is not limited. For example, in the second embodiment, the first pressing body 222a is in the shape of a flat plate; of course, the first pressing body 222a A curved shape is also possible.

Embodiment 3

Referring to FIGS. 1-2 and 8 , in the third embodiment, the triggering head 3 slides relative to the housing 4 along the X-axis direction. At this time, the bending portion 22 b at least includes the bending portion 22 b formed by the fixing plate 21 . The connecting plate 221b extending and located above the top surface 131 and the first pressing body 222b extending obliquely from the connecting plate 221b in a direction away from the top surface 131 and located above the top surface 131, the The first pressing body 222b covers the switch elastic sheet 11, and the triggering head 3 presses the first pressing body 222b against the switch elastic sheet 11, thereby driving the switch elastic sheet 11 to trigger the micro-switch. Switch 1 is turned on.

In fact, the third embodiment is the hoisting state of the whole machine of the second embodiment. The specific structure of the third embodiment, the positional connection relationship of each structure, and the principle of the trigger pressure head 3 to control the on or off of the micro switch 1 It is basically the same as that of the second embodiment, and will not be repeated here.

In the third embodiment, under the action of gravity, the micro switch 1 is deformed downward along the Z-axis direction; the protection elastic sheet 2 itself has good elasticity, which can effectively absorb the micro switch 1 The amount of deformation along the Z-axis direction, and the actual contact part of the trigger pressure head 3 is the protective elastic sheet 2, which effectively prevents the micro switch 1 and the trigger pressure head 3 from being squeezed rigidly and damage the The switch button 12 makes the reliability of the micro switch assembly high, so that the reliability of the micro switch system using the micro switch assembly is high.

Compared with the related art, the micro switch assembly of the present invention includes a micro switch, a trigger pressure head that can be pressed against or separated from the micro switch, and a protective shrapnel; the micro switch includes a switch shrapnel and a A switch button in an open or closed state under the action of the switch shrapnel; the protection shrapnel is located between the triggering head and the switch shrapnel and is covered on the switch shrapnel, and the protection shrapnel is located between the triggering head and the switch shrapnel and is covered on the switch shrapnel. Under the action, the protective elastic sheet is elastically deformed, so as to drive the switch elastic sheet to press against the switch button and trigger the conduction of the micro switch. In the above structure, the protection elastic sheet protects the switch elastic sheet, avoids installation damage, reduces the risk of being crushed by the triggering pressure head, and improves reliability. When the micro-switch assembly of the present invention is applied to the micro-switch system of the present invention, the reliability of the micro-switch system is high.

The above are only the embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present utility model, but these belong to The scope of protection of the utility model.

Claims (10)

1. A micro-switch assembly comprises a micro-switch and a trigger pressure head which can be pressed against or separated from the micro-switch; the microswitch comprises a switch elastic sheet and a switch button which can be in an open or closed state under the action of the switch elastic sheet, and is characterized in that the microswitch assembly further comprises a protection elastic sheet which is positioned between the trigger pressure head and the switch elastic sheet and covers the switch elastic sheet, and under the action of the trigger pressure head, the protection elastic sheet is elastically deformed to drive the switch elastic sheet to press against the switch button and trigger the microswitch to be switched on.

2. The micro-switch assembly according to claim 1, wherein the protection spring plate comprises a fixing plate and a bending portion, the fixing plate is fixedly connected with the micro-switch, the bending portion is connected to the fixing plate and covers the protection spring plate in at least one direction, the trigger pressing head can slide to the bending portion from at least one direction and trigger the bending portion to press against the switch spring plate.

3. The micro-switch assembly according to claim 2, wherein the bending portion includes a connecting plate and a first pressing body, the connecting plate is connected to the extending end of the fixing plate and located above the top surface of the micro-switch, the first pressing body is connected to the connecting plate and covers the switch elastic sheet, and the trigger pressing head presses the first pressing body toward the switch elastic sheet to drive the switch elastic sheet to trigger the micro-switch to be turned on.

4. The microswitch assembly of claim 3, wherein the first abutting body is flat or curved.

5. The micro-switch assembly according to claim 3 or 4, wherein the bent portion further comprises a second abutting body, the second abutting body is connected to one side of the first abutting body, which is far away from the fixing plate, and extends obliquely in a direction close to the top surface of the micro-switch, the first abutting body and the second abutting body together cover the switch elastic sheet, and the trigger pressure head abuts against the first abutting body after being transited by the second abutting body.

6. The microswitch assembly of claim 5, wherein the second abutting body is flat or curved.

7. A microswitch system comprising a microswitch assembly as in any one of claims 1 to 6 and a housing for mounting the microswitch assembly, wherein the microswitch is fixed to the housing, the trigger ram is mounted on a side of the housing adjacent to the protective dome, and the trigger ram is slidable relative to the housing in all directions.

8. The micro-switch system according to claim 7, wherein the housing comprises a housing body and a support frame fixed to the housing body, the trigger ram is slidably connected to the housing body, and the micro-switch and the protection spring plate are respectively fixed to the support frame.

9. The micro-switch system as claimed in claim 8, wherein the support frame comprises a first main body portion connected to the housing body and a first fixing portion fixed to a side of the first main body portion adjacent to the trigger ram; the micro switch assembly is fixed on the first fixing portion in a threaded connection mode.

10. The micro-switch system as claimed in claim 8, wherein the support bracket comprises a second main body portion connected to the housing body and a second fixing portion connected to a side of the second main body portion adjacent to the trigger ram; the second fixing part comprises a positioning plate and two buckle arms fixed on two opposite sides of the positioning plate; the micro switch assembly is buckled between the two buckling arms.

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