A micro switch protection device

Abstract

This utility model discloses a micro switch protection device, comprising: a movable metal plate with an L-shaped cross-section, which is engaged with a housing; an energized metal plate with an L-shaped cross-section, which is also engaged with the housing, wherein the upper end face of the L-shaped horizontal segment of the movable metal plate contacts the upper end face of the L-shaped horizontal segment of the energized metal plate during its rotational stroke; a power-off contact piece, which is engaged with the interior of the housing, wherein the lower end face of the power-off contact piece contacts the lower end face of the power-off contact piece during its rotational stroke; a power-off block with a triangular cross-section, wherein one acute angle of the power-off block triangle is positioned between the L-shaped horizontal segments of the movable and energized metal plates, and the opposite face of the acute angle of the power-off block triangle is positioned outside the housing, and the power-off block is movably engaged with the housing; and a pressure switch, wherein the lower end face of the pressure switch is fixedly connected to the upper end face of the L-shaped horizontal segment of the movable metal plate. The beneficial effect of this utility model is that it facilitates the direct disconnection of connection points that cannot be disconnected internally by the switch.

Description

Technical Field

[0001] This utility model relates to the technical field of switches, and in particular to a micro switch protection device. Background Technology

[0002] Pressing the switch changes the circuit connection, but sometimes the power cannot be disconnected for various reasons. This situation is very dangerous, but such problems may occur inside the casing and are difficult to break directly. Utility Model Content

[0003] The present invention aims to overcome the shortcomings of existing technologies in which it is difficult to disconnect the internal connection points of a switch that cannot be disconnected, and provides a microswitch protection device that facilitates direct disconnection of the internal connection points of a switch that cannot be disconnected.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A microswitch protection device, comprising:

[0006] The housing is located outside the switch protection device;

[0007] A movable metal sheet is placed inside the outer shell. The movable metal sheet has an L-shaped cross-section. The vertical segment of the L-shaped movable metal sheet passes through the outer shell and is placed outside the outer shell. The movable metal sheet is snapped into the inside of the outer shell. The angle between the horizontal segment and the vertical segment of the L-shaped movable metal sheet is an obtuse angle.

[0008] An energized metal sheet is placed inside the outer casing and to the right of a movable metal sheet. The cross-sectional shape of the energized metal sheet is L-shaped. The vertical segment of the L-shaped energized metal sheet passes through the outer casing and is placed outside the outer casing. The energized metal sheet is engaged with the inside of the outer casing. During the rotation stroke of the horizontal segment of the L-shaped energized metal sheet, it contacts the upper end face of the horizontal segment of the L-shaped energized metal sheet.

[0009] The power-off contact piece is placed inside the housing and above the L-shaped horizontal section of the movable metal plate. The power-off contact piece is snapped into the inside of the housing. During the rotation stroke of the L-shaped horizontal section of the movable metal plate, it contacts the lower end face of the power-off contact piece.

[0010] The power-off block has a triangular cross-section. One acute angle of the triangle is placed between the L-shaped horizontal segment of the movable metal plate and the L-shaped horizontal segment of the energized metal plate. The opposite face of the acute angle of the triangle is placed outside the outer shell. The power-off block is movably snapped into the outer shell.

[0011] A pressure switch is placed on the upper end face of the L-shaped horizontal section of the movable metal sheet. The lower end face of the pressure switch is fixedly connected to the upper end face of the L-shaped horizontal section of the movable metal sheet. The upper end of the pressure switch passes through the outer shell and is placed outside the outer shell. The pressure switch is snapped into the outer shell.

[0012] During installation, open the outer casing and install the movable metal plate, the energized metal plate, and the de-energized contact plate inside the casing. Both the movable and energized metal plates should protrude outside the casing. The de-energized contact plate can be used as a disconnector or a second energized metal plate, depending on the actual situation. Then seal the casing. During use, connect the movable and energized metal plates with wires. The metal plate connected by the movable metal plate is controlled by a pressure switch. Once the movable metal plate cannot disconnect from the energized part, insert the de-energized block into the energized point of the movable metal plate. This achieves the purpose of conveniently and directly disconnecting the connection points that cannot be disconnected inside the switch.

[0013] Preferably, the interior of the housing is provided with several fixing strips, and the movable metal piece, the power-off contact piece, and the power-on metal piece are all snapped into the housing by the fixing strips. The rear end face of the fixing strip is fixedly connected to the interior of the housing. The fixing strip facilitates the fixed installation of the metal pieces.

[0014] Preferably, the housing has a support strip and a fixing strip inside. The support strip is placed on the lower end face of the L-shaped horizontal section of the energized metal sheet, and the fixing strip is placed on the upper end face of the L-shaped horizontal section of the energized metal sheet. Both the support strip and the fixing strip are fixedly connected to the inner side of the housing. The fixing strip is placed inside the travel of the L-shaped horizontal section of the movable metal sheet. The support strip should be short to avoid obstructing the connection between the movable metal sheet and the energized metal sheet.

[0015] Preferably, the movable metal sheet is provided with a spring-loaded tab, which is positioned at the angle between the L-shaped horizontal segment and the L-shaped vertical segment of the movable metal sheet. The spring-loaded tab has a U-shaped cross-section, with one end fixedly connected to the L-shaped horizontal segment and the other end fixedly connected to the L-shaped vertical segment. The spring-loaded tab prevents the L-shaped horizontal segment of the movable metal sheet from losing its elasticity due to the pressure of the switch, thus preventing the connection position from changing.

[0016] Preferably, the movable metal sheet has two contact points, each located on the upper and lower end faces of the L-shaped horizontal segment of the movable metal sheet. These contact points are fixedly connected to the L-shaped horizontal segment. The contact point on the upper face of the L-shaped horizontal segment can contact the lower face of the power-off contact piece, and the contact point on the lower face of the L-shaped horizontal segment can contact the upper face of the power-on L-shaped horizontal segment. These contact points increase the tightness of the connection between the movable metal sheet and the power-on and power-off contact pieces.

[0017] Preferably, the outer casing has a strip-shaped through hole. The acute-angled end of the triangular power-off block passes through the strip-shaped through hole and is positioned between the L-shaped horizontal segment of the movable metal plate and the L-shaped horizontal segment of the energized metal plate. Dust-blocking strips are provided on both the upper and lower end faces of the strip-shaped through hole. The length of the dust-blocking strips is the same as the length of the strip-shaped through hole. The two dust-blocking strips are fixedly connected to the upper and lower end faces of the strip-shaped through hole, respectively. In a flat state, the two dust-blocking strips are in contact with each other. When the power-off block is inserted into the through hole, both the upper and lower end faces of the power-off block are in contact with the dust-blocking strips. The dust-blocking strips can block the strip-shaped through hole, reducing the entry of dust.

[0018] Preferably, the dust-blocking strip has several raised ridges on both its inner and outer sides. These raised ridges are vertically oriented and evenly distributed along the strip. They are fixedly connected to the dust-blocking strip. The power-off block has evenly distributed slots on its upper and lower ends. Each slot corresponds to a raised ridge on either side of the dust-blocking strip, and the raised ridge is placed within the slot. The power-off block engages with the dust-blocking strip through the cooperation of the raised ridges and the slots. The raised ridges and slots facilitate the movement of the power-off block and increase its sealing performance during movement.

[0019] The beneficial effects of this utility model are: it facilitates the direct disconnection of connection points that cannot be disconnected internally by the switch; the fixing strip facilitates the fixed installation of the metal sheet; the supporting strip must be short to avoid hindering the connection between the movable metal sheet and the energized metal sheet; the spring sheet can prevent the L-shaped horizontal section of the movable metal sheet from losing its elasticity due to the pressure of the switch, thus preventing the connection position from being changed; the contact point can increase the tightness of the connection between the movable metal sheet and the energized and de-energized contact pieces; the dustproof strip can block the strip-shaped through hole and reduce dust entry; the protrusion and slot not only facilitate the movement of the de-energized block, but also increase the sealing performance when the de-energized block moves. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0021] Figure 2 yes Figure 1 The main view;

[0022] Figure 3 yes Figure 2 A cross-sectional view of AA;

[0023] Figure 4 yes Figure 2 A magnified view of detail B;

[0024] Figure 5 yes Figure 2 A magnified view of detail C;

[0025] Figure 6 yes Figure 3 A magnified view of detail D.

[0026] In the diagram: 1. Outer shell, 2. Movable metal plate, 3. Electrically connected metal plate, 4. Electrically disconnected contact plate, 5. Electrically disconnected block, 6. Pressure switch, 7. Fixing strip one, 8. Supporting strip, 9. Fixing strip two, 10. Spring piece, 11. Contact point, 12. Strip-shaped through hole, 13. Dustproof strip, 14. Raised ridge, 15. Slot. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] like Figures 1 to 3 In one embodiment, a microswitch protection device includes: a movable metal plate 2 placed inside a housing 1, the movable metal plate 2 having an L-shaped cross-section, the vertical segment of the L-shaped movable metal plate 2 passing through the housing 1 and positioned outside the housing 1, the movable metal plate 2 being engaged with the interior of the housing 1, and the angle between the horizontal segment and the vertical segment of the L-shaped movable metal plate 2 being an obtuse angle; an energized metal plate 3 placed inside the housing 1 and positioned to the right of the movable metal plate 2, the energized metal plate 3 having an L-shaped cross-section, the vertical segment of the energized metal plate 3 passing through the housing 1 and positioned outside the housing 1, the energized metal plate 3 being engaged with the interior of the housing 1, and the upper end face of the horizontal segment of the L-shaped movable metal plate 2 contacting the horizontal segment of the L-shaped movable metal plate 3 during its rotational stroke; and a power-off contact plate 4 placed inside the housing 1. The inner part is placed above the L-shaped horizontal section of the movable metal sheet 2. The power-off contact piece 4 is snapped into the inside of the outer shell 1. During the rotation stroke of the L-shaped horizontal section of the movable metal sheet 2, it contacts the lower end face of the power-off contact piece 4. The cross-sectional shape of the power-off block 5 is triangular. One acute angle of the power-off block 5 is placed between the L-shaped horizontal section of the movable metal sheet 2 and the L-shaped horizontal section of the energized metal sheet 3. The opposite face of the acute angle of the power-off block 5 is placed outside the outer shell 1. The power-off block 5 is movably snapped into the outer shell 1. The pressure switch 6 is placed on the upper end face of the L-shaped horizontal section of the movable metal sheet 2. The lower end face of the pressure switch 6 is fixedly connected to the upper end face of the L-shaped horizontal section of the movable metal sheet 2. The upper end of the pressure switch 6 passes through the outer shell 1 and is placed outside the outer shell 1. The pressure switch 6 is snapped into the outer shell 1.

[0029] like Figure 1 and Figure 2 As shown, the movable metal piece 2, the power-off contact piece 4, and the power-on metal piece 3 are all snapped into the outer casing 1 by several fixing strips 7, and the rear end face of the fixing strips 7 is fixedly connected to the inside of the outer casing 1.

[0030] like Figure 1 and Figure 2 As shown, the support strip 8 is placed on the lower end face of the L-shaped horizontal section of the energized metal sheet 3, and the fixing strip 2 9 is placed on the upper end face of the L-shaped horizontal section of the energized metal sheet 3. Both the support strip 8 and the fixing strip 2 9 are fixedly connected to the inner side of the outer shell 1. The fixing strip 2 9 is placed inside the active stroke of the L-shaped horizontal section of the movable metal sheet 2.

[0031] like Figure 1 and Figure 2 As shown, the spring sheet 10 is placed at the angle between the L-shaped horizontal section and the L-shaped vertical section of the movable metal sheet 2. The cross-sectional shape of the spring sheet 10 is U-shaped. One end of the spring sheet 10 is fixedly connected to the L-shaped horizontal section of the movable metal sheet 2, and the other end of the spring sheet 10 is fixedly connected to the L-shaped vertical section of the movable metal sheet 2.

[0032] like Figure 3 As shown, there are two contact points 11, which are respectively placed on the upper and lower end faces of the movable metal sheet 2L-shaped horizontal section. The contact points 11 are fixedly connected to the movable metal sheet 2L-shaped horizontal section. The contact point 11 on the upper end face of the movable metal sheet 2L-shaped horizontal section can contact the lower end face of the power-off contact piece 4, and the contact point 11 on the lower end face of the movable metal sheet 2L-shaped horizontal section can contact the upper end face of the energized metal sheet 3L-shaped horizontal section.

[0033] like Figure 5 and Figure 6 As shown, the outer casing 1 has a strip-shaped through hole 12. The acute angle of the triangle of the power-off block 5 passes through the strip-shaped through hole 12 and is placed between the L-shaped horizontal section of the movable metal plate 2 and the L-shaped horizontal section of the energized metal plate 3. Dust-blocking soft strips 13 are provided on both the upper and lower end faces of the strip-shaped through hole 12. The length of the dust-blocking soft strips 13 is the same as the length of the strip-shaped through hole 12. The two dust-blocking soft strips 13 are fixedly connected to the upper and lower end faces of the strip-shaped through hole 12 respectively. In the flat state, the two dust-blocking soft strips 13 are in contact with each other. When the power-off block 5 is inserted into the through hole, both the upper and lower end faces of the power-off block 5 are in contact with the dust-blocking soft strips 13.

[0034] like Figure 6 As shown, the dustproof strip 13 has several protruding ridges 14 on both its inner and outer sides. The protruding ridges 14 are vertical and evenly distributed on the dustproof strip 13. The protruding ridges 14 are fixedly connected to the dustproof strip 13. The power-off block 5 has slots 15 evenly distributed on its upper and lower ends. The slots 15 correspond one-to-one with the protruding ridges 14 on any side of the dustproof strip 13. The protruding ridges 14 are placed in the slots 15. The power-off block 5 is engaged with the dustproof strip 13 through the cooperation of the protruding ridges 14 and the slots 15.

[0035] During installation, open the outer casing 1 and install and fix the movable metal piece 2, the energized metal piece 3, and the de-energized contact piece 4 inside the outer casing 1 using the fixing strip 7. The L-shaped horizontal section of the energized metal piece 3 needs to be fixed with the support strip 8 and the fixing strip 9. Both the movable metal piece 2 and the energized metal piece 3 need to protrude outside the outer casing 1. The de-energized contact piece 4 can be used as a disconnecting piece or as a second energized metal piece 3, depending on the actual situation. Then seal the outer casing 1. There can be several energized metal pieces 3. At the same time, there will also be multiple corresponding de-energized blocks 5 and strip-shaped through holes 12 in their corresponding positions. When in use, the movable metal piece 2 and the energized metal piece 3 are connected by wires on the parts outside the outer casing 1. The metal piece connected to the movable metal piece 2 is controlled by pressing the actuating switch 6. Once the movable metal piece 2 cannot be disconnected from the energized part, the power-off block 5 is inserted through the strip-shaped through hole 12 and two dustproof soft strips 13 into the energized point of the movable metal piece 2 to disconnect it. The power-off block is made of insulating material to reduce the risk of electric shock. The rest of the micro switch structure adopts existing technology and will not be described in detail here. It achieves the purpose of conveniently and directly disconnecting the connection points that cannot be disconnected inside the switch.

Claims

1. A microswitch guard device, characterized by, include: The outer casing (1) is placed outside the switch protection device; The movable metal sheet (2) is placed inside the outer shell (1). The cross-sectional shape of the movable metal sheet (2) is L-shaped. The vertical segment of the movable metal sheet (2) passes through the outer shell (1) and is placed outside the outer shell (1). The movable metal sheet (2) is snapped into the inside of the outer shell (1). The angle between the horizontal segment of the movable metal sheet (2) and the vertical segment of the L-shaped segment is obtuse. An energized metal sheet (3) is placed inside the outer shell (1) and to the right of the movable metal sheet (2). The cross-sectional shape of the energized metal sheet (3) is L-shaped. The vertical L-shaped section of the energized metal sheet (3) passes through the outer shell (1) and is placed outside the outer shell (1). The energized metal sheet (3) is snapped into the interior of the outer shell (1). During the rotation stroke of the horizontal L-shaped section of the movable metal sheet (2), it contacts the upper end face of the horizontal L-shaped section of the energized metal sheet (3). The power-off contact piece (4) is placed inside the outer shell (1) and above the L-shaped horizontal section of the movable metal piece (2). The power-off contact piece (4) is snapped into the inside of the outer shell (1). During the rotation stroke of the L-shaped horizontal section of the movable metal piece (2), it contacts the lower end face of the power-off contact piece (4). The power-off block (5) has a triangular cross-section. One acute angle of the triangle of the power-off block (5) is placed between the L-shaped horizontal section of the movable metal sheet (2) and the L-shaped horizontal section of the energized metal sheet (3). The opposite face of the acute angle of the triangle of the power-off block (5) is placed outside the outer shell (1). The power-off block (5) and the outer shell (1) are movably snapped together. The pressure switch (6) is placed on the upper end face of the L-shaped horizontal section of the movable metal sheet (2). The lower end face of the pressure switch (6) is fixedly connected to the upper end face of the L-shaped horizontal section of the movable metal sheet (2). The upper end of the pressure switch (6) passes through the outer shell (1) and is placed outside the outer shell (1). The pressure switch (6) is snapped into the outer shell (1).

2. A microswitch guard according to claim 1, wherein, The interior of the outer shell (1) is provided with several fixing strips (7). The movable metal piece (2), the power-off contact piece (4) and the power-on metal piece (3) are all snapped to the outer shell (1) by several fixing strips (7). The rear end face of the fixing strips (7) is fixedly connected to the interior of the outer shell (1).

3. A microswitch guard according to claim 2, wherein the guard is formed from a single piece of material. The interior of the outer shell (1) is provided with a support strip (8) and a fixing strip (9). The support strip (8) is placed on the lower end face of the L-shaped horizontal section of the energized metal sheet (3), and the fixing strip (9) is placed on the upper end face of the L-shaped horizontal section of the energized metal sheet (3). Both the support strip (8) and the fixing strip (9) are fixedly connected to the inner side of the outer shell (1). The fixing strip (9) is placed on the inner side of the active stroke of the L-shaped horizontal section of the movable metal sheet (2).

4. A microswitch guard according to claim 3, wherein the guard is formed from a single piece of material. The movable metal sheet (2) is provided with a spring sheet (10). The spring sheet (10) is placed at the angle between the L-shaped horizontal section and the L-shaped vertical section of the movable metal sheet (2). The cross-sectional shape of the spring sheet (10) is U-shaped. One end of the spring sheet (10) is fixedly connected to the L-shaped horizontal section of the movable metal sheet (2), and the other end of the spring sheet (10) is fixedly connected to the L-shaped vertical section of the movable metal sheet (2).

5. The microswitch guard of claim 2, wherein: The movable metal sheet (2) is provided with contact points (11). There are two contact points (11) and they are respectively placed on the upper and lower end faces of the L-shaped horizontal section of the movable metal sheet (2). The contact points (11) are fixedly connected to the L-shaped horizontal section of the movable metal sheet (2). The contact point (11) on the upper end face of the L-shaped horizontal section of the movable metal sheet (2) can contact the lower end face of the power-off contact piece (4). The contact point (11) on the lower end face of the L-shaped horizontal section of the movable metal sheet (2) can contact the upper end face of the L-shaped horizontal section of the energized metal sheet (3).

6. A microswitch guard according to claim 1, wherein: The outer shell (1) is provided with a strip-shaped through hole (12). The acute angle of the triangle of the power-off block (5) passes through the strip-shaped through hole (12) and is placed between the L-shaped horizontal section of the movable metal plate (2) and the L-shaped horizontal section of the energized metal plate (3). Both the upper and lower end faces of the strip-shaped through hole (12) are provided with dust-blocking soft strips (13). The length of the dust-blocking soft strips (13) is the same as the length of the strip-shaped through hole (12). The two dust-blocking soft strips (13) are fixedly connected to the upper and lower end faces of the strip-shaped through hole (12) respectively. In a flat state, the two dust-blocking soft strips (13) are in contact with each other. When the power-off block (5) is inserted into the through hole, both the upper and lower end faces of the power-off block (5) are in contact with the dust-blocking soft strips (13).

7. A microswitch guard according to claim 6, wherein the guard is formed from a single piece of material. The dustproof strip (13) has several protruding ridges (14) on both its inner and outer sides. The protruding ridges (14) are vertical and evenly distributed on the dustproof strip (13). The protruding ridges (14) are fixedly connected to the dustproof strip (13). The power-off block (5) has slots (15) evenly distributed on its upper and lower ends. The slots (15) correspond one-to-one with the protruding ridges (14) on any side of the dustproof strip (13). The protruding ridges (14) are placed in the slots (15). The power-off block (5) is engaged with the dustproof strip (13) through the cooperation of the protruding ridges (14) and the slots (15).

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