Small-stroke large-current microswitch structure

Abstract

The utility model discloses a small-stroke large-current microswitch structure, which comprises a plastic rubber-coated base, a first conductive pin, a second conductive pin and a third conductive pin which extend downwards side by side are wrapped in the plastic rubber-coated base, a rubber shell is sleeved on the upper side of the plastic rubber-coated base, a moving plate is transversely arranged in the rubber shell, and a first conductive pin, a second conductive pin and a third conductive pin are arranged on the moving plate. The third conductive needle extends upwards to be connected with the first end of the moving plate, the second conductive needle extends upwards to be provided with a lower conductive seat, the first conductive needle extends upwards to be provided with an upper conductive seat corresponding to the lower conductive seat up and down, and the opposite end faces of the upper conductive seat and the lower conductive seat are provided with static contacts. The movable contact is located between the two static contacts, a pressing part is arranged at the position, corresponding to the first end of the movable piece, of the upper end of the rubber shell, and a handle with one end hinged to the rubber shell is installed on the upper side of the rubber shell. According to the utility model, the problem that the existing microswitch cannot meet the requirements of small stroke and large current performance can be solved.

Description

Technical Field

[0001] This utility model relates to the field of micro switch technology, specifically a micro switch structure with a small stroke and large current. Background Technology

[0002] Currently, similar microswitches in the industry either have the characteristics of high current carrying capacity and long switching stroke, or low current carrying capacity and short switching stroke. The existing waterproof structure of the pin and sealing ring of microswitches generally adopts a single tight fit and glue structure for protection. This type of solution is costly and has unsatisfactory waterproof effect. Similar microswitches on the market use a suspended plastic wrapping method for the bending position of the pin seat, and the contact riveting adopts a straight riveting solution. This type of solution has problems with inaccurate positioning and weak strength of the terminal slot size and structure. At the same time, the contact riveting contact ... Utility Model Content

[0003] This invention provides a micro switch structure with a small stroke and high current, which can solve the problem that existing micro switches cannot meet the performance requirements of small stroke and high current.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a micro switch structure with a small stroke and large current, comprising a plastic-coated base, wherein the plastic-coated base internally encloses a first conductive pin, a second conductive pin, and a third conductive pin extending downwards side by side; a plastic shell is sleeved on the upper side of the plastic-coated base; a moving plate is laterally arranged inside the plastic shell; the third conductive pin extends upwards and connects to the first end of the moving plate; the second conductive pin extends upwards and is provided with a lower conductive seat; the first conductive pin extends upwards and is provided with an upper conductive seat corresponding vertically to the lower conductive seat; the upper conductive pin... The lower conductive base and the upper conductive base are equipped with stationary contacts on their opposite end faces. The second end of the moving piece is provided with a moving contact, which is located between the two stationary contacts. The upper end of the housing is provided with a button corresponding to the first end of the moving piece. A handle with one end hinged to the housing is installed on the upper side of the housing. The moving piece is limited by the first conductive pin, which can limit the movement of the lower and upper conductive bases. The stroke of the moving piece is relatively short, and the button is controlled by the handle, which is convenient. The stationary contacts are firmly installed and fixed, and the contact surface is large, which can withstand a relatively large current, thus realizing a small stroke and large current.

[0005] Preferably, a sealing sleeve is provided on the outer side of the press, the upper end of the sealing sleeve is engaged with a groove around the outer side of the press, and the lower edge of the sealing sleeve is engaged with a slot at the upper end of the rubber shell. The gap between the press and the rubber shell is sealed by the sealing sleeve, and the sealing sleeve is fixed by the groove and the slot, which is relatively firm.

[0006] 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.

[0007] Preferably, the cross-section of the stationary contact is inverted T-shaped, and the root area of ​​the stationary contact is relatively large, making the installation more secure and able to withstand a larger current.

[0008] Preferably, the upper end of the third conductive pin is provided with a snap-fit ​​vertical plate extending side by side from the upper side of the plastic-coated base. The snap-fit ​​vertical plate snaps into the moving piece. The lower side of the moving piece is provided with an arched spring piece, which corresponds to the snap-fit ​​vertical plate. The snap-fit ​​vertical plate at the end can limit one end of the moving piece, and the snap-fit ​​vertical plate in the middle can cooperate with the arched spring piece to provide a restoring elastic force when the moving piece moves.

[0009] Preferably, the upper side of the plastic-coated base is provided with a reinforcing coating that wraps around the root of the snap-fit ​​vertical plate and the upper conductive seat. The reinforcing coating can improve the root strength of the snap-fit ​​vertical plate and the upper conductive seat, increase their lifespan, and make the snap-fit ​​vertical plate and the upper conductive seat less prone to breakage.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The structure is simple and compact. The moving piece is limited by the first conductive pin, which can limit the lower and upper conductive seats. The stroke of the moving piece is relatively short. At the same time, the button is controlled by the handle, which is convenient. The stationary contact is firmly installed and fixed with a large contact surface, which can withstand a relatively large current, thus realizing a small stroke and large current. The triangular ribs can improve the sealing and firmness of the installation at both ends of the sealing sleeve. The root area of ​​the stationary contact is relatively large, making the installation more secure, thereby increasing the terminal positioning accuracy and contact contact surface, and can withstand a larger current. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the assembly state of the structure with the sealing sleeve of this utility model;

[0013] Figure 2 This is an exploded view of the structure of the present invention with a sealing sleeve.

[0014] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0015] Figure 4 This is a partial exploded view of the structure of the present invention with a sealing sleeve.

[0016] Figure 5This is a front sectional view of the present invention;

[0017] Figure 6 for Figure 5 Enlarged structural diagram at point B;

[0018] Figure 7 This is an exploded view of the structure of this utility model without the sealing sleeve.

[0019] Figure label:

[0020] 1. Handle, 2. Sealing sleeve, 21. Rib, 22. Slot, 23. Groove, 3. Button, 4. Housing, 5. Moving piece, 51. Moving contact, 53. Arched spring, 6. Plastic-coated base, 61. Upper conductive base, 62. Reinforced plastic coating, 63. Stationary contact, 64. Lower conductive base, 65. Snap-fit ​​vertical plate, 81. First conductive pin, 82. Second conductive pin, 83. Third conductive pin. Detailed Implementation

[0021] 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.

[0022] like Figure 1-7 As shown, this embodiment provides a microswitch structure with a small stroke and high current capability to address the problem that existing microswitches cannot meet the requirements of small stroke and high current performance. The structure includes a plastic-coated base 6, inside which are encased a first conductive pin 81, a second conductive pin 82, and a third conductive pin 83 extending downwards side-by-side. A plastic shell 4 is fitted onto the upper side of the plastic-coated base 6. A movable piece 5 is horizontally arranged inside the plastic shell 4. The third conductive pin 83 extends upwards and connects to the first end of the movable piece 5. The second conductive pin 82 extends upwards and is provided with a lower conductive seat 64. The first conductive pin 81 extends upwards and is provided with an upper conductive seat 61 corresponding vertically to the lower conductive seat 64. The upper conductive base 61 and the lower conductive base 64 are equipped with stationary contacts 63 on their opposite end faces. The second end of the moving piece 5 is provided with a moving contact 51, which is located between the two stationary contacts 63. The upper end of the housing 4 is provided with a button 3 corresponding to the first end of the moving piece 5. A handle 1 with one end hinged to the housing 4 is installed on the upper side of the housing 4. The moving piece 5 is limited by the first conductive pin 81, which can limit the movement of the lower conductive base 64 and the upper conductive base 61. The stroke of the moving piece 5 is relatively short. At the same time, the button 3 is controlled by the handle 1, which is convenient. The stationary contacts 63 are firmly installed and fixed, with a large contact surface, which can withstand a relatively large current, thus realizing a small stroke and large current.

[0023] Specifically, the plastic-coated base 6 can firmly wrap the first conductive needle 81, the second conductive needle 82 and the third conductive needle 83. The movable piece 5 is set in the narrow space between the plastic shell 4 and the plastic-coated base 6. When the handle 1 presses the button 3, the button 3 will act on the movable piece 5. The movable contact 51 at the second end of the movable piece 5 can swing between the lower conductive base 64 and the upper conductive base 61 to switch the conductive connection.

[0024] The upper conductive base 61 and the first conductive pin 81 are an integral structure, and the lower conductive base 64 and the second conductive pin 82 are also an integral structure. The plastic-coated base 6 can be provided with hollow holes between the first conductive pin 81 and the second conductive pin 82, and between the second conductive pin 82 and the third conductive pin 83. The hollow holes can be used to install and fix the micro switch.

[0025] To improve the waterproof performance of the microswitch structure, such as Figure 1-6 As shown, a sealing sleeve 2 is provided on the outer side of the press 3. The upper end of the sealing sleeve 2 is engaged with a groove 23 on the outer side of the press 3, and the lower edge of the sealing sleeve 2 is engaged with a slot 22 on the upper end of the rubber shell 4. The gap between the press 3 and the rubber shell 4 is sealed by setting the sealing sleeve 2. The sealing sleeve 2 is fixed by the groove 23 and the slot 22, which is relatively firm.

[0026] like Figure 6 As shown, both the groove 23 on the push button 3 and the slot 22 on the rubber shell 4 are provided with triangular ribs 21. 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. The ribs 21 can be set on the side wall of the groove 23 or at the bottom of the slot 22, and both can be in contact with the sealing sleeve 2.

[0027] In this embodiment, as Figure 5 As shown, the static contact 63 has an inverted T-shaped cross-section. The root area of ​​the static contact 63 is relatively large, making it more securely installed and able to withstand larger currents. The bottom of the static contact 63 is provided with a riveting part, which can be firmly connected to the lower conductive base 64 and the upper conductive base 61.

[0028] In this embodiment, as Figure 1-6 As shown, the upper end of the third conductive pin 83 is provided with a snap-fit ​​vertical plate 65 extending side by side from the upper side of the plastic-coated base 6. The snap-fit ​​vertical plate 65 snaps into the moving piece 5. The lower side of the moving piece 5 is provided with an arched spring piece 53. The arched spring piece 53 corresponds to the snap-fit ​​vertical plate 65. The snap-fit ​​vertical plate 65 located at the end can limit one end of the moving piece 5. The snap-fit ​​vertical plate 65 located in the middle can cooperate with the arched spring piece 53 to provide a restoring elastic force when the moving piece 5 moves.

[0029] The plastic-coated base 6 has a reinforced plastic coating part 62 on its upper side, which wraps around the root of the snap-fit ​​vertical plate 65 and the upper conductive seat 61. The reinforced plastic coating part 62 can improve the root strength of the snap-fit ​​vertical plate 65 and the upper conductive seat 61, increase their lifespan, and make the snap-fit ​​vertical plate 65 and the upper conductive seat 61 less prone to breakage.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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 microswitch structure of small stroke and large current, characterized in that, The utility model relates to a plastic encapsulated base (6) which is internally wrapped with first, second and third conductive pins (81, 82, 83) extending side by side downward, and the upper side of the plastic encapsulated base (6) is sleeved with a rubber shell (4), the rubber shell (4) is internally provided with a moving piece (5) transversely, the third conductive pin (83) extends upward and is connected with the first end of the moving piece (5), the second conductive pin (82) extends upward and is provided with a lower conductive base (64), the first conductive pin (81) extends upward and is provided with an upper conductive base (61) corresponding to the lower conductive base (64) upward and downward, the opposite end faces of the upper conductive base (61) and the lower conductive base (64) are provided with stationary contact points (63), the second end of the moving piece (5) is provided with a moving contact point (51), the moving contact point (51) is located between the two stationary contact points (63), the upper end of the rubber shell (4) is provided with a press button (3) corresponding to the first end of the moving piece (5), and the upper side of the rubber shell (4) is provided with a handle (1) hinged at one end to the rubber shell (4). The outer side of the press button (3) is sleeved with a sealing sleeve (2), the upper end of the sealing sleeve (2) is clamped with a groove (23) on the outer side of the press button (3), and the lower end edge of the sealing sleeve (2) is clamped with a clamping groove (22) on the upper end of the rubber shell (4).

2. The microswitch structure of small stroke and large current according to claim 1, characterized in that: The groove (23) on the press button (3) and the clamping groove (22) on the rubber shell (4) are internally provided with protruding ribs (21) in triangular cross section, and the protruding ribs (21) are in contact with the sealing sleeve (2).

3. The micro switch structure of small stroke and large current according to claim 2, characterized in that: The stationary contact points (63) are in inverted T-shaped cross section.

4. The micro switch structure of small stroke and large current according to claim 1, characterized in that: The upper end of the third conductive pin (83) is provided with clamping vertical plates (65) extending side by side out of the upper side of the plastic encapsulated base (6), the clamping vertical plates (65) are clamped with the moving piece (5), the lower side of the moving piece (5) is provided with an arched elastic piece (53) corresponding to the clamping vertical plates (65).

5. The micro switch structure of small stroke and large current according to claim 1, characterized in that: The upper side of the plastic encapsulated base (6) is provided with a reinforcing encapsulated part (62) wrapping the clamping vertical plates (65) and the roots of the upper conductive bases (61).

6. The micro switch structure of small stroke and large current according to claim 5, characterized in that: ​

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