Touch switch with good stability

Abstract

The utility model belongs to the field of touch switches, and particularly relates to a touch switch with good stability, which comprises a base assembly, a shell assembly, a pressing assembly, a sealing sleeve, a static contact point and a sliding block, the base assembly is provided with a metal elastic sheet and symmetrically distributed sliding rails, the shell assembly is detachably connected with a threaded convex block of a base through a threaded groove in the bottom, and the pressing assembly is arranged on the shell assembly. The pressing assembly is composed of a pressing head, a connecting rod and a dynamic contact point, vertical pressing is achieved through the first connecting rod penetrating through the sealing sleeve, the dynamic contact point is hemispherical and matched with the annular structure of the static contact point, the sliding block is in sliding fit with the sliding rail to limit deviation, and the second connecting rod is sleeved with the spiral spring. The two ends of the metal elastic piece abut against the butt joint block and the connecting rod respectively, uniform reset elastic force is provided, and panels of different thicknesses are clamped in a self-adaptive mode through the metal elastic piece.

Description

Technical Field

[0001] This utility model relates to the field of tactile switches, specifically a tactile switch with good stability. Background Technology

[0002] A tactile switch is an electronic switch, belonging to the category of electronic components. Tactile switches are generally installed on switch panels, and there are recessed and fixed types. Recessed types are generally installed in the corresponding mounting slots of the switch panel.

[0003] However, current tactile switches with good stability have the following shortcomings:

[0004] Poor installation compatibility: Traditional switches rely on screws for fixing, which cannot be adapted to panels of different thicknesses, resulting in low installation efficiency.

[0005] Reset stability defects: The single spring design is prone to pressing deviation, and the dynamic contact point is misaligned with the static contact point; therefore, a tactile switch with good stability is proposed to address the above problems. Utility Model Content

[0006] To overcome the shortcomings of existing technologies, such as poor installation compatibility and reset stability defects, this utility model proposes a tactile switch with good stability.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a tactile switch with good stability, including a base assembly, a housing assembly, a pressing assembly, a sealing sleeve, a static contact point, and a slider.

[0008] The base assembly includes a base, a docking block is fixedly connected to the center of the base, a slide rail is fixedly connected to the top surface of the base, and a metal spring is fixedly connected to the outer surface of the base.

[0009] The housing assembly includes a housing, and the top of the housing has a through hole.

[0010] The pressing assembly includes a pressing head, the bottom end of which is fixedly connected to a first connecting rod, and the bottom end of the first connecting rod is fixedly connected to a second connecting rod.

[0011] The sealing sleeve is embedded in the through hole, and the first connecting rod passes through the sealing sleeve.

[0012] The static contact point is fixedly connected to the top of the docking block, and four pins are fixedly connected to the outer surface of the static contact point.

[0013] The slider slides in conjunction with the slide rail. The slider is fixedly connected to the outer surface of the first connecting rod. The bottom end of the second connecting rod is fixedly connected to a dynamic contact point. A helical spring is sleeved on the second connecting rod.

[0014] Preferably, there are two sliders and two slide rails, and the two sliders and two slide rails are horizontally symmetrically distributed about the first connecting rod.

[0015] Preferably, the bottom of the housing is provided with a threaded groove, and the top of the base is fixedly connected with a threaded protrusion.

[0016] Preferably, the threaded bump is threaded into the threaded groove.

[0017] Preferably, the dynamic contact point is hemispherical and matches the specifications of the static contact point.

[0018] Preferably, the four pins extend through the base and are distributed at equal angles.

[0019] Preferably, the mating block has a through slot, and the pin passes through the through slot of the mating block.

[0020] Preferably, the bottom end of the helical spring overlaps the top surface of the mating block, and the top end of the helical spring overlaps the bottom end surface of the first connecting rod.

[0021] The advantages of this utility model are:

[0022] 1. This utility model achieves adaptive snap-fit ​​function between the switch and mounting panels of different thicknesses through the elastic bending structure design of the metal spring sheet, which solves the problems of low installation efficiency and poor compatibility caused by the reliance on screw fixing of traditional switches, and improves the adaptability and ease of operation of embedded installation.

[0023] 2. This utility model achieves the vertical and precise guiding function of the pressing component through the horizontally symmetrical distribution structure design of the double slide rail and the slider, solves the problem of contact misalignment caused by the easy deviation of the single-rail spring switch, and improves the contact stability of the dynamic contact point and the static contact point and the service life of the switch.

[0024] 3. This utility model achieves low-resistance point-to-surface conduction by matching the hemispherical dynamic contact point with the annular static contact point, solving the problems of high friction loss and high contact resistance of planar contacts and improving conductivity. Attached Figure Description

[0025] 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, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1A schematic diagram of the structure of a tactile switch with good stability;

[0027] Figure 2 This is a schematic diagram of the base assembly of this utility model;

[0028] Figure 3 This is a schematic diagram of the top structure of the housing assembly of this utility model;

[0029] Figure 4 This is a schematic diagram of the bottom structure of the housing assembly of this utility model;

[0030] Figure 5 This is a schematic diagram of the pressing component of this utility model;

[0031] Figure 6 This is a schematic diagram of the front cross-sectional structure of the tactile switch with good stability according to this utility model;

[0032] Figure 7 For the present utility model Figure 6 A magnified view of the structure at point A in the middle;

[0033] Figure 8 For the present utility model Figure 6 A magnified schematic diagram of the structure at point B in the middle;

[0034] Figure 9 This is a schematic cross-sectional view of the top structure of the stable tactile switch of this utility model.

[0035] Figure 10 This is a schematic diagram of the connection between the static contact point and the pin in this utility model.

[0036] Figure 11 For the present utility model Figure 10 A magnified structural diagram of part C in the middle.

[0037] In the diagram: 1. Base assembly; 101. Base; 102. Threaded protrusion; 103. Connecting block; 104. Slide rail; 105. Metal spring; 2. Housing assembly; 201. Housing; 202. Through hole; 203. Threaded groove; 3. Pressing assembly; 301. Pressing head; 302. First connecting rod; 303. Second connecting rod; 4. Sealing sleeve; 5. Static contact point; 6. Pin; 7. Slider; 8. Dynamic contact point; 9. Helical spring. Detailed Implementation

[0038] 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.

[0039] The following is in conjunction with the appendix Figure 1 —11 provides further details regarding this application.

[0040] This application discloses a tactile switch with good stability. (Refer to...) Figures 1 to 11 A stable tactile switch includes a base assembly 1, a housing assembly 2, a pressing assembly 3, a sealing sleeve 4, a static contact point 5, and a slider 7.

[0041] The base assembly 1 includes a base 101. A threaded protrusion 102 is fixedly connected to the top of the base 101. The threaded protrusion 102 is threaded into a threaded groove 203. A mating block 103 is fixedly connected to the center of the base 101. A slide rail 104 is fixedly connected to the top surface of the base 101. A metal spring 105 is fixedly connected to the outer surface of the base 101. The restoring force of the metal spring 105 causes its end to be tightly attached to the inner wall of the mounting groove, forming friction fixation to prevent the switch from shaking or falling off.

[0042] Preferably, the metal spring 105 is made of phosphor bronze C5191 with a thickness of 0.3-0.5mm and a Rockwell hardness of HRB 75-85. The bending angle at the end of the spring is 15°-30°, which can be adapted to the panel thickness of 0.5-3.0mm. The four metal springs are evenly distributed on the outer wall of the base 101 in a symmetrical angle of 90° to ensure force balance. The inner side of the spring can be pre-coated with conductive adhesive to achieve grounding shielding between the housing 201 and the mounting panel.

[0043] The housing assembly 2 includes a housing 201, with a through hole 202 at the top and a threaded groove 203 at the bottom.

[0044] The pressing assembly 3 includes a pressing head 301, with a first connecting rod 302 fixedly connected to the bottom end of the pressing head 301, and a second connecting rod 303 fixedly connected to the bottom end of the first connecting rod 302.

[0045] The sealing sleeve 4 is embedded in the through hole 202, and the first connecting rod 302 passes through the sealing sleeve 4.

[0046] Preferably, the sealing sleeve 4 is made of silicone rubber with a Shore hardness of A40-A50 and a temperature resistance of -40℃ to 150℃.

[0047] The static contact point 5 is fixedly connected to the top of the docking block 103. Four pins 6 are fixedly connected to the outer surface of the static contact point 5. The four pins 6 pass through the base 101 and are distributed at equal angles. A through slot is opened on the docking block 103, and the pins 6 pass through the through slot of the docking block 103.

[0048] Preferably, both dynamic contact point 8 and static contact point 5 are made of silver-nickel alloy AgNi15 with a contact resistance ≤50mΩ.

[0049] The slider 7 slides with the slide rail 104. The slider 7 is fixedly connected to the outer surface of the first connecting rod 302. The bottom end of the second connecting rod 303 is fixedly connected to a dynamic contact point 8. The dynamic contact point 8 is hemispherical and matches the specifications of the static contact point 5. The static contact point 5 is annular. A helical spring 9 is sleeved on the second connecting rod 303. The bottom end of the helical spring 9 overlaps the top surface of the mating block 103. The top end of the helical spring 9 overlaps the bottom surface of the first connecting rod 302. There are two sliders 7 and two slide rails 104. The two sliders 7 and the two slide rails 104 are horizontally symmetrically distributed about the first connecting rod 302.

[0050] Working principle:

[0051] Embedded panel mounting slot: Align the switch with the pre-drilled hole in the mounting panel, press the base 101 to embed it into the mounting slot, the arc-shaped end of the metal spring 105 contacts the side wall of the mounting slot, and is squeezed inward and bends elastically, generating a reverse force. The deformation of the spring can be automatically adjusted according to the size of the mounting slot, which is suitable for panels of different thicknesses.

[0052] Initial state, not pressed: The helical spring 9 is in its naturally extended state, pushing the pressing assembly 3 upward to reset. At this time, the dynamic contact point 8 separates from the static contact point 5, and the circuit is in an open state. The slider 7 is located at the top of the slide rail 104, and the first connecting rod 302 and the pressing head 301 are in their highest positions.

[0053] Pressing Process: When external force is applied to the pressing head 301, the pressing assembly 3 moves downward, and the slider 7 slides along the slide rail 104 to ensure that the pressing direction is strictly vertical, avoiding deviation or jamming. The two connecting rods 303 drive the dynamic contact point 8 to move downward and contact the hemispherical surface of the static contact point 5. Upon contact, the hemispherical design reduces frictional loss and ensures stable conduction. The helical spring 9 is compressed, storing elastic potential energy to provide power for reset. After the dynamic contact point 8 and the static contact point 5 are fully in contact, the current forms a closed loop through the pin 6, and the switch is turned on. The four pins 6, distributed at equal angles, enhance the stability of the electrical connection. The metal spring 105 may assist in fixing or grounding the external circuit.

[0054] Reset process: After the external force is removed, the helical spring 9 releases its elastic potential energy, pushing the pressing component 3 to reset upwards. The dynamic contact point 8 separates from the static contact point 5, the circuit is disconnected, and the slider 7 slides back to its initial position along the slide rail 104, ensuring accurate structural reset.

[0055] 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 tactile switch with good stability, characterized in that, include: The base assembly (1) includes a base (101), a docking block (103) is fixedly connected to the center of the base (101), a slide rail (104) is fixedly connected to the top surface of the base (101), and a metal spring sheet (105) is fixedly connected to the outer surface of the base (101). The housing assembly (2) includes a housing (201) and a through hole (202) is provided on the top of the housing (201). The pressing assembly (3) includes a pressing head (301), the bottom end of which is fixedly connected to a first connecting rod (302), and the bottom end of the first connecting rod (302) is fixedly connected to a second connecting rod (303). A sealing sleeve (4) is embedded in a through hole (202), and the first connecting rod (302) passes through the sealing sleeve (4). A static contact point (5) is fixedly connected to the top of the docking block (103), and four pins (6) are fixedly connected to the outer surface of the static contact point (5). The slider (7) is slidably connected to the slide rail (104). The slider (7) is fixedly connected to the outer surface of the first connecting rod (302). The bottom end of the second connecting rod (303) is fixedly connected to a dynamic contact point (8). A helical spring (9) is sleeved on the second connecting rod (303).

2. The tactile switch with good stability according to claim 1, characterized in that: There are two sliders (7) and two slide rails (104), and the two sliders (7) and the two slide rails (104) are horizontally symmetrically distributed about the first connecting rod (302).

3. The tactile switch with good stability according to claim 1, characterized in that: The bottom of the housing (201) is provided with a threaded groove (203), and the top of the base (101) is fixedly connected with a threaded protrusion (102).

4. A tactile switch with good stability according to claim 3, characterized in that: The threaded protrusion (102) is threaded into the threaded groove (203).

5. A tactile switch with good stability according to claim 1, characterized in that: The dynamic contact point (8) is hemispherical and matches the specifications of the static contact point (5).

6. A tactile switch with good stability according to claim 1, characterized in that: The four pins (6) extend through the base (101) and are distributed at equal angles.

7. A tactile switch with good stability according to claim 1, characterized in that: The docking block (103) has a through slot, and the pin (6) passes through the through slot of the docking block (103).

8. A tactile switch with good stability according to claim 1, characterized in that: The bottom end of the helical spring (9) overlaps the top surface of the docking block (103), and the top end of the helical spring (9) overlaps the bottom surface of the first connecting rod (302).

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