Low-force long-stroke sinking plate type switch

Abstract

The utility model relates to the technical field of switches, in particular to a low-force long-stroke sinking plate type switch which comprises a base, an installation groove is formed in the base, a first clamping piece and a second clamping piece are connected to the bottom of the installation groove in a clamping mode, an elastic piece is connected to the middle of the installation groove in a clamping mode, and the first clamping piece is in contact fit with the middle of the elastic piece. A cover plate is clamped outside the base, a silica gel button slides in the mounting groove, the upper end of the silica gel button penetrates through the cover plate, an inner ring is fixedly connected to the outer wall of the silica gel button, an outer ring is clamped and mounted on the inner wall of the mounting groove, and a rubber layer is fixedly connected between the inner ring and the outer ring in a sealed mode. The silica gel button is pressed to sink, the inner ring is driven to sink, the rubber layer is pulled, the silica gel button and the inner wall of the mounting groove are sealed through the inner ring, the rubber layer and the outer ring, water is prevented from making contact with conductive parts in the mounting groove, pressing of the silica gel button is not affected, the needed pressing force is low, the stroke is long, and the waterproof performance is good.

Description

Technical Field

[0001] This utility model relates to the field of switches, specifically a low-force, long-stroke recessed plate switch. Background Technology

[0002] With the development of electronic technology, the technical requirements for electronic products are getting higher and higher. As one of the components of electronic products, switches are gradually becoming smaller and smaller. The recessed switch is a type of small switch. It is a switch that turns the circuit on or off by applying external force to make the contacts make or break them. It requires less force to press, but has a long stroke and has high practical value.

[0003] Existing low-force, long-stroke recessed tactile switches, such as the recessed tactile switch proposed in patent application number "CN201420742751.6", include a card, base, spring, button, and cover. This solves the problem that existing tablet or mobile phone tactile switches are flatly soldered onto the circuit board to control the power on and off of the host. However, this method is prone to detachment after soldering, and the solder content cannot be guaranteed to be uniform and saturated, which also increases the thickness of the entire product.

[0004] However, existing technology has defects and poor waterproof performance. If the button surface comes into contact with water, the button will sink into the base when pressed, carrying water from the side wall of the button into the base, causing the conductive parts inside the base to be easily damp and damaged. Therefore, a low-force, long-stroke recessed plate switch is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a low-force, long-stroke recessed plate switch to solve the problems mentioned in the background art.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A low-force, long-stroke recessed plate switch includes a base, the base having an internal mounting groove, a first clip and a second clip engaged at the bottom of the mounting groove, and a spring clip engaged in the middle of the mounting groove, the first clip engaging with the middle of the spring clip, and the second clip engaging with the edge of the spring clip.

[0008] The base is externally fitted with a cover plate, and a silicone button slides in the mounting groove. The upper end of the silicone button passes through the cover plate. An inner ring is fixed to the outer wall of the silicone button, and an outer ring is fitted to the inner wall of the mounting groove. A rubber layer is sealed and fixed between the inner and outer rings to prevent water from entering between the silicone button and the inner wall of the mounting groove.

[0009] Preferably, a fixing ring is fixedly connected to the inner wall of the mounting groove, and two sets of retaining seats are fixedly connected to the inner wall of the mounting groove. Two sets of sliding grooves are opened in the retaining seats. A spring is fixedly connected in each of the two sets of sliding grooves. A limit block is fixedly connected to the end of each of the two sets of springs. One end of the limit block is slidably connected to the inside of the sliding groove, and the outer ring is engaged between the fixing ring and the limit block.

[0010] Preferably, the card holder has two sets of rectangular openings, which are respectively connected to two sets of sliding grooves. A connecting plate is slidably connected between the two sets of rectangular openings, and the two ends of the connecting plate are respectively fixed to two sets of limiting blocks.

[0011] Preferably, the second clip is U-shaped, with one end of the first clip located inside the second clip, and multiple sets of bubble points fixed on the first clip for contact and engagement with the middle of the spring piece.

[0012] Preferably, a clip head is fixedly connected to one side of the second clip, and the clip head is snapped into the base. Both the first and second clips penetrate the lower end of the base.

[0013] Preferably, a PCB board is snapped onto one side of the base, and both clip one and clip two are connected to the PCB board. A clip block is fixed to one side of the base, and a clip plate is fixed to the side wall of the cover plate. The clip plate and the clip block engage with each other, and a groove for soldering is provided on one side of the cover plate.

[0014] The beneficial effects of this utility model are:

[0015] This invention involves pressing a silicone button, which compresses a spring, connecting clip one and clip two. As the silicone button is pressed, the side wall gradually sinks into the mounting groove, causing the inner ring to sink as well. Since the outer ring is fixed, the rubber layer is stretched. The inner ring, rubber layer, and outer ring seal the silicone button and the inner wall of the mounting groove, preventing water from contacting the conductive parts inside the mounting groove without affecting the pressing of the silicone button. The invention requires low pressing force, has a long stroke, and provides good waterproof performance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the silicone button mounting structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the mounting groove structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of card component one and card component two of this utility model;

[0022] Figure 6 This is a cross-sectional view of the switch structure of this utility model;

[0023] Figure 7 yes Figure 6 Enlarged schematic diagram of the structure at point A;

[0024] The attached figures are labeled as follows:

[0025] 1. Base; 2. Mounting slot; 3. Clip 1; 4. Clip 2; 5. Clip head; 6. Bubble point; 7. Clip block; 8. Cover plate; 9. Clip plate; 10. Spring; 11. Silicone button; 12. Groove; 13. PCB board; 14. Fixing ring; 15. Clip seat; 16. Outer ring; 17. Inner ring; 18. Rubber layer; 19. Slide groove; 20. Spring; 21. Limiting block; 22. Rectangular opening; 23. Connecting plate. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] A low-force, long-stroke recessed plate switch, such as Figures 1-7 As shown, it includes a base 1, and an installation groove 2 is provided inside the base 1. A first clip 3 and a second clip 4 are engaged at the bottom of the installation groove 2. A spring piece 10 is engaged in the middle of the installation groove 2. The first clip 3 contacts and engages with the middle of the spring piece 10, and the second clip 4 is engaged with the edge of the spring piece 10.

[0028] The base 1 is externally attached to a cover plate 8, and a silicone button 11 slides in the mounting groove 2. The upper end of the silicone button 11 passes through the cover plate 8. An inner ring 17 is fixed to the outer wall of the silicone button 11, and an outer ring 16 is attached to the inner wall of the mounting groove 2. A rubber layer 18 is sealed and fixed between the inner ring 17 and the outer ring 16 to prevent water from entering between the silicone button 11 and the inner wall of the mounting groove 2.

[0029] The edge of the spring plate is always in contact with the second card 4. When the middle of the spring plate is in contact with the first card 3, the connection between the first card 3, the spring plate, and the second card 9 is established, and the switch is turned on. When the middle of the spring plate is not in contact with the first card 3, the connection between the first card 3 and the second card 4 is established, and the switch is turned off. The button is made of silicone material, which allows such a small product to have a long stroke while requiring a small triggering force.

[0030] By pressing the silicone button 11, the silicone button 11 squeezes the spring 10, causing the first clip 3 and the second clip 4 to connect. The silicone button 11 is pressed, and the side wall gradually sinks into the mounting groove 2, causing the inner ring 17 to sink. Since the outer ring 16 is fixed, the rubber layer 18 is stretched. The rubber layer 18 has good elastic deformation force. The inner ring 17, the rubber layer 18 and the outer ring 16 seal the silicone button 11 and the inner wall of the mounting groove 2, preventing water from contacting the conductive parts inside the mounting groove 2, and does not affect the pressing of the silicone button 11. The pressing force required is low, the stroke is long, and the waterproof performance is good.

[0031] like Figure 3 , Figure 6 , Figure 7 As shown, a fixing ring 14 is fixedly connected to the inner wall of the mounting groove 2, and two sets of card seats 15 are fixedly connected to the inner wall of the mounting groove 2. Two sets of sliding grooves 19 are opened in the card seats 15, and springs 20 are fixedly connected in both sets of sliding grooves 19. Limiting blocks 21 are fixedly connected to the ends of both sets of springs 20. One end of the limiting block 21 is slidably connected to the inside of the sliding groove 19, and the outer ring 16 is engaged between the fixing ring 14 and the limiting block 21.

[0032] The shape of the fixing ring 14 is the same as the inner wall shape of the mounting groove 2. The inner ring 17 fits and is fixed to the side wall of the button. The outer ring 16 is mounted on the upper end of the fixing ring 14. Before installing the outer ring 16, the limiting block 21 is squeezed to compress the limiting block 21 into the slide groove 19. The outer ring 16 is mounted on the upper end of the fixing ring 14. The limiting block 21 is released and extends out of the slide groove 19, squeezing against the upper end of the outer ring 16 to fix the position of the outer ring 16. The outermost edge of the outer ring 16 is located on the upper end of the fixing ring 14, so that when the outer ring 16 is squeezed against the fixing ring 14, water will not pass through between the outer ring 16 and the fixing ring 14.

[0033] like Figure 3 , Figure 6 , Figure 7 As shown, the card holder 15 has two sets of rectangular openings 22, which are respectively connected to two sets of sliding grooves 19. A connecting plate 23 is slidably connected between the two sets of rectangular openings 22, and the two ends of the connecting plate 23 are respectively fixed to two sets of limiting blocks 21.

[0034] The sliding connecting plate 23 drives the two sets of limiting blocks 21 to slide, so that the limiting blocks 21 are compressed into the sliding groove 19, and the connecting plate 23 can easily drive the limiting blocks 21 to slide.

[0035] like Figures 4-6 As shown, the second card 4 is U-shaped, and the end of the first card 3 is located inside the second card 4. Multiple sets of bubble points 6 are fixed on the first card 3 for contact and engagement with the middle of the spring piece 10.

[0036] Even if a foreign object enters the switch and covers one or two of the four small bubble dots 6, the product can still conduct through the spring contact 10.

[0037] like Figure 1 , Figure 4 , Figure 5 As shown, a clip head 5 is fixedly connected to one side of the second clip 4, and the clip head 5 is snapped into the base 1. The ends of the first clip 3 and the second clip 4 both penetrate the lower end of the base 1.

[0038] The clip head 5 of clip 2 4 engages with the side wall of base 1, so that clip 2 4 and base 1 are securely installed.

[0039] like Figures 1-4 As shown, a PCB board 13 is snapped onto one side of the base 1, and clips 3 and 4 are both connected to the PCB board 13. A clip 7 is fixed to one side of the base 1, and a clip 9 is fixed to the side wall of the cover plate 8. The clip 9 and the clip 7 are snapped together. A groove 12 for soldering is provided on one side of the cover plate 8.

[0040] This low-force, long-stroke recessed switch is embedded in the PCB board 13 and soldered in the groove 12. The solder paste will be squeezed into the groove 12, which makes the product have better soldering performance. The PCB board 13, cover plate 8 and base 1 are soldered together, and the installation is stable.

[0041] The working principle of the low-force, long-stroke recessed plate switch provided by this utility model is as follows:

[0042] By pressing the silicone button 11, the silicone button 11 squeezes the spring 10, causing the first clip 3 and the second clip 4 to connect. The silicone button 11 is pressed, and the side wall gradually sinks into the mounting groove 2, causing the inner ring 17 to sink. Since the outer ring 16 is fixed, the rubber layer 18 is stretched. The rubber layer 18 has good elastic deformation force. The inner ring 17, the rubber layer 18 and the outer ring 16 seal the silicone button 11 and the inner wall of the mounting groove 2, preventing water from contacting the conductive parts inside the mounting groove 2, and does not affect the pressing of the silicone button 11. The pressing force required is low, the stroke is long, and the waterproof performance is good.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A low-force, long-stroke recessed plate switch, comprising a base (1), characterized in that, The base (1) has an installation groove (2) inside. The bottom of the installation groove (2) is fitted with a first clip (3) and a second clip (4). The middle of the installation groove (2) is fitted with a spring piece (10). The first clip (3) is in contact with the middle of the spring piece (10), and the second clip (4) is pressed against the edge of the spring piece (10). The base (1) is externally attached to a cover plate (8), and a silicone button (11) slides in the mounting groove (2). The upper end of the silicone button (11) passes through the cover plate (8). An inner ring (17) is fixed to the outer wall of the silicone button (11), and an outer ring (16) is attached to the inner wall of the mounting groove (2). A rubber layer (18) is sealed and fixed between the inner ring (17) and the outer ring (16) to prevent water from entering between the silicone button (11) and the inner wall of the mounting groove (2).

2. The low-force, long-stroke recessed plate switch according to claim 1, characterized in that, The inner wall of the mounting groove (2) is fixed with a fixing ring (14), and the inner wall of the mounting groove (2) is fixed with two sets of card seats (15). Two sets of sliding grooves (19) are opened in the card seats (15). Springs (20) are fixed in both sets of sliding grooves (19). Limit blocks (21) are fixed at the ends of both sets of springs (20). One end of the limit block (21) is slidably connected to the inside of the sliding groove (19). The outer ring (16) is engaged between the fixing ring (14) and the limit block (21).

3. A low-force, long-stroke recessed plate switch according to claim 2, characterized in that, The card holder (15) has two sets of rectangular openings (22), which are connected to two sets of sliding grooves (19) respectively. A connecting plate (23) is slidably connected between the two sets of rectangular openings (22), and the two ends of the connecting plate (23) are fixedly connected to two sets of limiting blocks (21) respectively.

4. A low-force, long-stroke recessed plate switch according to claim 1, characterized in that, The second card (4) is U-shaped, and the end of the first card (3) is located inside the second card (4). Multiple sets of bubble points (6) are fixed on the first card (3) for contact and engagement with the middle of the spring (10).

5. A low-force, long-stroke recessed plate switch according to claim 4, characterized in that, A clip head (5) is fixedly connected to one side of the second clip (4). The clip head (5) is snapped into the base (1). The ends of the first clip (3) and the second clip (4) both penetrate the lower end of the base (1).

6. A low-force, long-stroke recessed plate switch according to claim 5, characterized in that, A PCB board (13) is snapped onto one side of the base (1). Both the first clip (3) and the second clip (4) are connected to the PCB board (13). A clip (7) is fixed to one side of the base (1). A clip (9) is fixed to the side wall of the cover plate (8). The clip (9) and the clip (7) are snapped together. A groove (12) for soldering is provided on one side of the cover plate (8).

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