Normally-open large-stroke waterproof microswitch

Abstract

The normally-open large-stroke waterproof microswitch comprises a base, a rubber shell is installed at the upper end of the base, an NC terminal, an NO terminal and a COM terminal are arranged in the base from left to right side by side in a penetrating mode, the upper end of the COM terminal is coupled with the first end of a moving plate transversely arranged on one side of the COM terminal, a supporting rod is arranged at the upper end of the COM terminal in a penetrating mode, and the first end of the moving plate is connected with the supporting rod. The first end of the supporting rod is connected with one end of a spring transversely penetrating through the COM terminal, the other end of the spring is connected with the movable piece, the upper end of the NC terminal and the upper end of the NO terminal are arranged up and down, static contacts are installed on the opposite faces of the NC terminal and the NO terminal, a movable contact is installed at the second end of the movable piece and extends between the upper end of the NC terminal and the upper end of the NO terminal, and the upper end of the rubber shell is provided with a pressing spring in a penetrating mode. The lower end of the pressing part is coupled with the second end of the supporting rod, and the outer side of the pressing part is sleeved with a sealing sleeve. The microswitch can solve the problems that an existing microswitch is not large in stroke, poor in waterproof effect and incapable of meeting the requirement for application of a normally-open loop in the market.

Description

Technical Field

[0001] This utility model relates to the field of micro switch technology, specifically a normally open, long-stroke, waterproof micro switch. Background Technology

[0002] The waterproof structure of similar microswitches on the market generally adopts a single tight fit and glue structure for protection at the position of the button and the sealing ring. This type of solution is costly and has the defect of unsatisfactory waterproof effect. The stroke of similar microswitches on the market is generally around 2mm, which cannot meet the market demand for large stroke applications. The free state position path structure of similar microswitches on the market is currently commonly a normally closed circuit, which cannot meet the market demand for normally open circuit applications. Utility Model Content

[0003] This utility model provides a normally open, long-stroke, waterproof micro switch that can solve the problems of existing micro switches having small stroke, poor waterproof effect, and inability to meet the needs of normally open circuit applications in the market.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a normally open, long-stroke, waterproof micro switch, comprising a base, a rubber shell mounted on the upper end of the base, and NC, NO, and COM terminals arranged side-by-side from left to right inside the base. The upper end of the COM terminal is coupled to the first end of a horizontally arranged moving piece on one side. A support rod passes through the upper end of the COM terminal, the first end of which is connected to one end of a spring that horizontally passes through the COM terminal, and the other end of the spring is connected to the moving piece. The upper ends of the NC and NO terminals are arranged vertically, and stationary contacts are mounted on their opposite surfaces. A moving contact is mounted on the second end of the moving piece and extends between the upper ends of the NC and NO terminals. The upper end of the rubber shell is provided with a push button, the lower end of which is coupled to the second end of the support rod. A sealing sleeve is fitted on the outer side of the push button. The upper end of the sealing sleeve is engaged with a groove around the outer side of the push button, and the lower edge of the sealing sleeve is engaged with a slot at the upper end of the rubber shell. The first end of the support rod is directly connected to the spring. When the second end of the support rod is in the upper position, the spring causes the second end of the moving plate to be in a downward state, keeping the micro switch in the normally open state. The sealing sleeve can seal the gap between the push button and the rubber shell. As the push button moves up and down, the sealing sleeve deforms. The sealing sleeve is fixed by the groove and the slot, which is relatively firm. When the lower end of the sealing sleeve is engaged in the slot, a folding riveting part can be provided on the rubber shell to press and fix the lower edge of the sealing sleeve.

[0005] Preferably, the groove on the pusher and the slot on the rubber shell are both provided with triangular ribs. The ribs are in contact with the sealing sleeve. By providing triangular ribs, the sealing and firmness of the installation at both ends of the sealing sleeve can be improved.

[0006] Preferably, the first end of the moving piece forms two parallel abutments, and a first limiting groove is provided on the upper side wall of the COM terminal. The end of the abutment is engaged with the corresponding first limiting groove for limitation. The two abutments can be limited by the first limiting groove, so that the second end of the moving piece can swing to achieve switching conduction.

[0007] Preferably, the upper side of the COM terminal is provided with a second limiting groove on both sides, and the two sides of the support rod are provided with limiting protrusions. After the support rod passes through the middle of the upper side of the COM terminal, the limiting protrusions and the second limiting grooves are engaged and limited. The limiting protrusions and the second limiting grooves limit the support rod so that the swing of the support rod has a fulcrum, ensuring the smooth rotation of the support rod.

[0008] Preferably, the first end of the support rod is provided with a V-shaped groove, which is connected to one end of the spring. The V-shaped groove can be locked and fixed to one end of the spring, making it difficult to loosen.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The structure is simple. The first end of the support rod is directly connected to the spring. When the second end of the support rod is in the upper position, the spring causes the second end of the moving plate to be in a downward state, keeping the microswitch in the normally open state and enabling a large stroke. The sealing sleeve can seal the gap between the push button and the rubber shell. As the push button moves up and down, the sealing sleeve deforms. The sealing sleeve is fixed by grooves and slots, which is relatively firm. When the lower end of the sealing sleeve is inserted into the slot, the rubber shell can be provided with a riveting part to press and fix the lower edge of the sealing sleeve. The installation sealing and firmness of both ends of the sealing sleeve can be improved by setting triangular ribs. At the same time, the glue application adopts a hot riveting fixing scheme. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0012] Figure 2 This is an exploded three-dimensional structural diagram of the present invention;

[0013] Figure 3 This is a front sectional view of the present invention;

[0014] Figure 4 for Figure 3 Enlarged structural diagram at point A;

[0015] Figure 5 This is a three-dimensional structural diagram of the base of this utility model;

[0016] Figure 6This is a three-dimensional structural diagram of the support rod of this utility model;

[0017] Figure 7 This is a three-dimensional structural diagram of the moving piece of this utility model.

[0018] Figure label:

[0019] 1. Button, 2. Sealing sleeve, 21. Rib, 22. Slot, 23. Groove, 3. Housing, 4. Support rod, 41. Limiting protrusion, 42. V-shaped groove, 5. Moving piece, 51. Moving contact, 52. Abutment arm, 6. Spring, 61. Stationary contact, 7. Base, 72. Second limiting slot, 74. First limiting slot, 8. NC terminal, 9. NO terminal, 10. COM terminal. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] like Figure 1-7 As shown, this utility model provides a normally open, long-stroke, waterproof micro switch, including a base 7. A housing 3 is mounted on the upper end of the base 7. An NC terminal 8, a NO terminal 9, and a COM terminal 10 are arranged side-by-side from left to right inside the base 7. The upper end of the COM terminal 10 is coupled to the first end of a horizontally arranged movable piece 5 on one side. A support rod 4 passes through the upper end of the COM terminal 10. The first end of the support rod 4 is connected to one end of a spring 6 that horizontally passes through the COM terminal 10. The other end of the spring 6 is connected to the movable piece 5. The upper ends of the NC terminal 8 and the NO terminal 9 are arranged vertically, and stationary contacts 61 are mounted on their opposite surfaces. The second end of the movable piece 5 is equipped with a movable contact 51 and extends between the upper ends of the NC terminal 8 and the NO terminal 9. The upper end of the housing 3 passes through... The device is equipped with a push button 1, the lower end of which is coupled to the second end of the support rod 4. A sealing sleeve 2 is fitted on the outer side of the push button 1. The upper end of the sealing sleeve 2 is engaged with a groove 23 on the outer side of the push button 1. The lower edge of the sealing sleeve 2 is engaged with a slot 22 on the upper end of the housing 3. The first end of the support rod 4 is directly connected to the spring 6. When the second end of the support rod 4 is in the upper position, the spring 6 causes the second end of the moving piece 5 to be in the lower position, keeping the micro switch in the normally open state. The sealing sleeve 2 can seal the gap between the push button 1 and the housing 3. As the push button 1 moves up and down, the sealing sleeve 2 deforms. The sealing sleeve 2 is fixed by the groove 23 and the slot 22, which is relatively firm. When the lower end of the sealing sleeve 2 is engaged in the slot 22, a folding riveting part can be provided on the housing 4 to press and fix the lower edge of the sealing sleeve 2.

[0022] Specifically, the base 7 is made of plastic material, and the NC terminal 8, NO terminal 9 and COM terminal 10 are fixed and molded during injection molding.

[0023] When the second end of the support rod 4 is in the upper position, the second end of the moving piece 5 is in the lower position, so that the moving contact 51 contacts the stationary contact 61 on the NO terminal 9, and achieves the normally open state.

[0024] When the second end of the support rod 4 is pressed down by the button 1, the support rod 4 rotates around the COM terminal 10, and the first end of the support rod 4 moves upward. The spring 6 can also move the moving contact 51 upward, so that it contacts the stationary contact 61 on the NC terminal 8.

[0025] In this embodiment, as Figure 4 As shown, both the groove 23 on the push button 1 and the slot 22 on the rubber shell 3 are provided with triangular ribs 21 inside. The ribs 21 are in contact with the sealing sleeve 2. By setting the triangular ribs 21, the installation sealing and firmness of both ends of the sealing sleeve 2 can be improved.

[0026] In this embodiment, as Figure 7 As shown, the first end of the moving piece 5 forms two parallel abutment arms 52. The upper side wall of the COM terminal 10 is provided with a first limiting slot 74. The end of the abutment arm 52 is engaged and limited with the corresponding first limiting slot 74. The two abutment arms 52 can be limited by the first limiting slot 74, so that the second end of the moving piece 5 can swing to achieve switching conduction.

[0027] In this embodiment, as Figure 5-6 As shown, the upper side of the COM terminal 10 is provided with a second limiting groove 72 on both sides, and the two sides of the support rod 4 are provided with limiting protrusions 41. After the support rod 4 passes through the middle of the upper side of the COM terminal 10, the limiting protrusions 41 and the second limiting grooves 72 are engaged and limited. The limiting protrusions 41 and the second limiting grooves 72 limit the support rod 4 so that the swing of the support rod 4 has a fulcrum, ensuring the smooth rotation of the support rod 4.

[0028] like Figure 6 As shown, the first end of the support rod 4 is provided with a V-shaped groove 42, which is connected to one end of the spring 6. The V-shaped groove 42 can be locked and fixed to one end of the spring 6, and is not easy to loosen.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

Claims

1. A normally open, long-stroke, waterproof micro switch, characterized in that, include: A base (7) has a plastic shell (3) installed on its upper end. An NC terminal (8), a NO terminal (9), and a COM terminal (10) are arranged side-by-side from left to right inside the base (7). The upper end of the COM terminal (10) is coupled to the first end of a horizontally arranged movable piece (5) on one side. A support rod (4) is arranged through the upper end of the COM terminal (10). The first end of the support rod (4) is connected to one end of a spring (6) that horizontally passes through the COM terminal (10). The other end of the spring (6) is connected to the movable piece (5). The NC terminal (8) and NO terminal (9) are connected to the NO terminal (10). The upper end of the terminal (9) is arranged vertically, and a stationary contact (61) is installed on the opposite surface. The second end of the moving piece (5) is equipped with a moving contact (51) and extends into the upper end between the NC terminal (8) and the NO terminal (9). The upper end of the housing (3) is provided with a push button (1). The lower end of the push button (1) is coupled to the second end of the support rod (4). A sealing sleeve (2) is provided on the outer side of the push button (1). The upper end of the sealing sleeve (2) is engaged with a groove (23) on the outer side of the push button (1). The lower edge of the sealing sleeve (2) is engaged with the groove (22) on the upper end of the housing (3).

2. The normally open, long-stroke, waterproof micro switch according to claim 1, characterized in that: The groove (23) on the push button (1) and the slot (22) on the rubber shell (3) are both provided with triangular ribs (21), and the ribs (21) are in contact with the sealing sleeve (2).

3. The normally open, long-stroke, waterproof micro switch according to claim 1, characterized in that: The first end of the moving piece (5) forms two parallel abutment arms (52), and a first limiting groove (74) is provided on the upper side wall of the COM terminal (10). The end of the abutment arm (52) is engaged and limited with the corresponding first limiting groove (74).

4. The normally open, long-stroke, waterproof micro switch according to claim 3, characterized in that: The upper side of the COM terminal (10) is provided with a second limiting groove (72) on both sides, and the two sides of the support rod (4) are provided with limiting protrusions (41). The support rod (4) passes through the middle of the upper end of the COM terminal (10) and then engages with the second limiting groove (72) for limiting.

5. The normally open, long-stroke, waterproof micro switch according to claim 4, characterized in that: The first end of the support rod (4) is provided with a V-shaped groove (42), which is connected to one end of the spring (6).

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