A waterproof horizontal push micro switch

Abstract

The present invention discloses a waterproof horizontal push micro switch, the technical solution of which mainly includes a shell, a push rod, a movable piece, a movable contact, a normally closed static contact, and a normally open static contact. The movable contact is arranged on the movable piece, and the push rod is slidably connected to the shell. The push rod and the movable piece are linked together to drive the movable piece to move between the normally closed static contact and the normally open static contact; a protective cover is arranged in the shell, and the movable piece, the movable contact, the normally closed static contact, and the normally open static contact are all arranged in the protective cover; a pushing block is arranged on the push rod, and the pushing block is slidably arranged along a first direction of the shell; a linkage block is arranged on the movable piece, and the linkage block is moved along a second direction of the shell; the linkage block and the pushing block are linked together, and the waterproof level of the switch is further improved.

Description

Technical Field

[0001] The present invention relates to a micro switch, and more particularly to a waterproof transverse push micro switch. Background Art

[0002] The switches used for car doors are usually micro switches. Micro switches have a small contact interval and a snap-action mechanism. They are contact mechanisms that perform switching actions with a specified stroke and a specified force. Micro switches usually include a housing, a button, a moving contact, and terminals. To facilitate the assembly of internal parts, the housing usually includes an upper cover and a base. Contacts are provided on the moving contact. The terminals include normally closed terminals, normally open terminals, and common terminals. Normally closed contacts are provided on the normally closed terminals, and normally open contacts are provided on the normally open terminals. The micro switch drives the moving contact to swing through the button to make the contact contact with the normally open contact or the normally closed contact.

[0003] Most existing micro switches used in car doors are waterproof switches. Waterproof switches usually have a waterproof cap made of elastic material on the button. However, the existing waterproof effect still has some loopholes, and the requirements for waterproof level are becoming increasingly higher. Therefore, how to further improve the waterproof effect of micro switches is a technical problem that needs continuous breakthroughs in this field. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the object of the present invention is to provide a waterproof horizontal push micro switch, which further improves the waterproof level of the switch.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a waterproof horizontal push micro switch, comprising a housing, a push rod, a movable piece, a movable contact, a normally closed static contact, and a normally open static contact, wherein the movable contact is disposed on the movable piece, the push rod is slidably connected to the housing, and the push rod is arranged in linkage with the movable piece to drive the movable piece to move between the normally closed static contact and the normally open static contact;

[0006] A protective cover is provided in the shell, and the movable piece, movable contact, normally closed static contact and normally open static contact are all provided in the protective cover. A pushing block is provided on the push rod, and the pushing block is slidably arranged along the first direction of the shell. A linkage block is provided on the movable piece, and the linkage block is moved along the second direction of the shell. The linkage block is linked to the pushing block.

[0007] In summary, the present invention has the following beneficial effects: by providing an additional protective cover inside the shell, the movable piece and the push rod are highly misaligned through the push block and the linkage block, so that the moving contact, the normally closed static contact, and the normally open static contact are further separated from the outside, so that the equipment has a higher waterproof level.

[0008] The stroke of the micro switch can be increased, so that the strokes of the movable piece and the push rod are matched, thereby increasing the stability of the micro switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural diagram of a micro switch;

[0010] Figure 2 Schematic diagram of the internal three-dimensional structure of the micro switch;

[0011] Figure 3 It is a schematic diagram of the three-dimensional structure inside the protective cover;

[0012] Figure 4 Schematic diagram of the three-dimensional structure of the movable piece area.

[0013] Figure numerals: 1. Housing; 11. Driving spring; 2. Push rod; 21. Push block; 3. Movable piece; 31. Linkage block; 32. Moving seat; 33. Slider; 34. Slide groove; 35. Push surface; 4. Moving contact; 5. Normally closed static contact; 6. Normally open static contact; 7. Protective cover; 71. Mounting plate; 72. Mounting groove; 73. Moving groove; 74. Sensing contact; 8. Waterproof cap; 81. First waterproof cover; 82. Second waterproof cover; 83. Third waterproof cover. DETAILED DESCRIPTION

[0014] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0015] Reference Figures 1 to 4 As shown, to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waterproof horizontal push micro switch, comprising a housing 1, a push rod 2, a movable piece 3, a movable contact 4, a normally closed static contact 5, and a normally open static contact 6, wherein the movable contact 4 is provided on the movable piece 3, the push rod 2 is slidably connected to the housing 1, and the push rod 2 is arranged in linkage with the movable piece 3 to drive the movable piece 3 to move between the normally closed static contact 5 and the normally open static contact 6;

[0016] A protective cover 7 is provided in the shell 1. The movable piece 3, the moving contact 4, the normally closed static contact 5, and the normally open static contact 6 are all provided in the protective cover 7. A pushing block 21 is provided on the push rod 2. The pushing block 21 is slidably arranged along the first direction of the shell 1. A linkage block 31 is provided on the movable piece 3. The linkage block 31 is moved along the second direction of the shell 1. The linkage block 31 is linked to the pushing block 21.

[0017] The design of the present invention provides a protective cover 7 inside the housing 1, and through the push block 21 and the linkage block 31, the movable piece 3 and the push rod 2 are highly misaligned, so that the moving contact 4, the normally closed static contact 5, and the normally open static contact 6 are further separated from the outside, so that the equipment has a higher waterproof level.

[0018] The first direction and the second direction are perpendicularly arranged, and the linkage block 31 and the push block 21 are both provided with a tapered surface. Figure 2 As shown, when the push rod 2 is pushed to the right as shown in the figure, the pushing block 21 compresses the driving spring 11, and under the action of the two conical surfaces, the linkage block 31 moves upward, thereby driving the movable piece 3 to move. Since the protective cover 7 has a water-proof effect, and the linkage block 31 moves upward in a different direction from the water inlet direction, it provides further protection. Even if a small amount of water enters, it will not affect the contacts inside the protective cover 7.

[0019] On the premise of high protection, the internal conductive components are further protected.

[0020] The linkage block 31 includes a moving seat 32 and a slider 33 . The moving seat 32 is provided with a slide groove 34 . The slider 33 is slidably connected in the slide groove 34 . An elastic member for resetting the slider 33 is provided in the slide groove 34 .

[0021] The slider 33 is provided with a pushing surface 35, which is arranged in a triangular structure. One end of the movable piece 3 abuts against the pushing surface 35, and the movable piece 3 is arranged along the first direction of the housing 1. The normally closed static contact 5 and the normally open static contact 6 are respectively provided on both sides of the movable piece 3;

[0022] When the movable seat 32 drives the slider 33 to move, the movable piece 3 slides along the pushing surface 35 .

[0023] Combine Figure 3 and Figure 4 As shown, during the process of pushing the push rod 2 to the right, the pushing block 21 pushes the movable seat 32 to move upward. At this time, the movable piece 3 acts on the slider 33, causing the slider 33 to move to the left along the slide groove 34 and compress the elastic part. After moving up to the specified distance, the movable piece 3 moves past the central vertex of the pushing surface 35, and the pushing force of the pushing surface 35 on the movable piece 3 changes from obliquely upward to obliquely downward. At this time, the movable piece 3 rotates under the action of the pushing force, so that the moving contact 4 is separated from the normally closed static contact 5, and the moving contact 4 is closed with the normally open static contact 6, and the circuit forms a loop, thereby generating an induction signal.

[0024] When the contact force acts on the push rod 2, the push rod 2 moves to the left under the force of the driving spring 11. At this time, the moving seat 32 moves downward along the conical surface under the action of gravity. At this time, the movable piece 3 moves upward along the pushing surface 35. When the movable piece 3 moves past the central vertex of the pushing surface 35, the pushing force of the pushing surface 35 on the movable piece 3 changes from obliquely downward to obliquely upward. At this time, the movable piece 3 rotates under the action of this pushing force, so that the moving contact 4 is separated from the normally open static contact 6, and the moving contact 4 is closed with the normally closed static contact 5, and the original state returns to disconnection.

[0025] A mounting plate 71 is provided inside the protective cover 7, and a mounting groove 72 is provided on the mounting plate 71. One end of the movable piece 3 is inserted into the mounting groove 72, and the other end abuts against the pushing surface 35. When the movable seat 32 drives the slider 33 to move, the movable piece 3 rotates along the mounting groove 72.

[0026] In the design of this structure, the mounting plate 71 acts as a terminal to connect with the wire, ensuring that one end of the movable piece 3 serves as one end of the circuit. When the moving contact 4 is connected to a static contact, a designated circuit can be formed to send a specific circuit signal.

[0027] A driving spring 11 is provided in the housing 1 , one end of the driving spring 11 abuts against the inner wall of the housing 1 , and the other end abuts against the pushing block 21 . The moving stroke of the pushing block 21 is α, and the height dimension of the pushing surface 35 is β, which is greater than α.

[0028] The distance α is Figure 2 The distance that push rod 2 moves to the right is Figure 4 The triangular side of the pushing surface 35 in the upper and lower directions, and β being greater than α, can ensure that when the push rod 2 is pressed to the top, the movable piece 3 still moves within the range of the pushing surface 35, and the movable piece 3 will not be separated.

[0029] The protective cover 7 includes a moving groove 73 for the moving seat 32 to be installed. The groove top of the moving groove 73 is provided with a sensing contact 74. The moving seat 32 is provided with a trigger contact. The distance between the trigger contact and the sensing contact 74 is γ, and α is equal to γ.

[0030] γ is Figure 2 The partial distance inside the middle moving groove 73 is designed so that when the push rod 2 is pushed to the top, the trigger contact abuts against the sensing contact 74, thereby forming a new circuit. Therefore, multiple signals can be designed for the micro switch, so that different signal transmission can be designed for different situations.

[0031] In summary, the design of this distance can increase the stroke of the micro switch, so that the strokes of the movable piece 3 and the push rod 2 match, thereby increasing the stability of the micro switch.

[0032] The housing 1 is provided with a waterproof cap 8, and the waterproof cap 8 is provided with a slide groove 34 for the push rod 2 to pass through;

[0033] The waterproof cap 8 includes at least a first waterproof cover 81 and a second waterproof cover 82. The first waterproof cover 81 is in contact with the shell 1, and the second waterproof cover 82 is arranged on the side of the first waterproof cover 81 away from the shell 1, and the diameter length of the first waterproof cover 81 is greater than the diameter length of the second waterproof cover 82.

[0034] The waterproof cap 8 further includes a third waterproof cover 83, which is disposed on a side of the second waterproof cover 82 away from the housing 1, and the diameter of the second waterproof cover 82 is greater than the diameter of the third waterproof cover 83;

[0035] The first waterproof cover 81 , the second waterproof cover 82 and the third waterproof cover 83 are all made of elastic material. The sum of the deformation strokes d of the first waterproof cover 81 , the second waterproof cover 82 and the third waterproof cover 83 , d≥α.

[0036] The design of the first waterproof cover 81 , the second waterproof cover 82 and the third waterproof cover 83 can ensure sealing while cooperating with the pressure change when the push rod 2 is pushed.

[0037] The connection terminals of the normally closed static contact 5 , the normally open static contact 6 and the movable contact 4 are arranged above the protective cover 7 , and the movable seat 32 is arranged below the protective cover 7 .

[0038] The design of this position further enhances the waterproof effect inside the housing 1.

[0039] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that improvements and modifications that do not depart from the principles of the present invention are within the scope of protection of the present invention.

Claims

1. A waterproof horizontal push micro switch, comprising a housing (1), a push rod (2), a movable piece (3), a movable contact (4), a normally closed static contact (5), and a normally open static contact (6), wherein the movable contact (4) is arranged on the movable piece (3), the push rod (2) is slidably connected to the housing (1), and the push rod (2) and the movable piece (3) are arranged in a linkage manner to drive the movable piece (3) to move between the normally closed static contact (5) and the normally open static contact (6); Its characteristics are: A protective cover (7) is provided in the housing (1); the movable piece (3), the movable contact (4), the normally closed static contact (5), and the normally open static contact (6) are all provided in the protective cover (7); a pushing block (21) is provided on the push rod (2); the pushing block (21) is slidably arranged along a first direction of the housing (1); a linkage block (31) is provided on the movable piece (3); the linkage block (31) is movable along a second direction of the housing (1); and the linkage block (31) is linked to the pushing block (21); The first direction and the second direction are arranged perpendicularly, and the linkage block (31) and the pushing block (21) are both provided with a tapered surface; The linkage block (31) includes a movable seat (32) and a slider (33); a slide groove (34) is provided on the movable seat (32); the slider (33) is slidably connected in the slide groove (34); and an elastic member for resetting the slider (33) is provided in the slide groove (34).

2. The waterproof horizontal push micro switch according to claim 1, characterized in that: The slider (33) is provided with a pushing surface (35), the pushing surface (35) being arranged in a triangular structure, one end of the movable piece (3) being in contact with the pushing surface (35), and the movable piece (3) being arranged along a first direction of the housing (1), and the normally closed static contact (5) and the normally open static contact (6) being respectively arranged on both sides of the movable piece (3); When the movable seat (32) drives the slider (33) to move, the movable piece (3) slides along the pushing surface (35).

3. The waterproof horizontal push micro switch according to claim 2, characterized in that: A mounting plate (71) is provided in the protective cover (7), and a mounting groove (72) is provided on the mounting plate (71). One end of the movable piece (3) is inserted into the mounting groove (72), and the other end is in contact with the pushing surface (35). When the movable seat (32) drives the slider (33) to move, the movable piece (3) rotates along the mounting groove (72).

4. The waterproof horizontal push micro switch according to claim 3, characterized in that: A driving spring (11) is provided in the housing (1), one end of the driving spring (11) abuts against the inner wall of the housing (1), and the other end abuts against the pushing block (21), the moving stroke of the pushing block (21) is α, and the height dimension of the pushing surface (35) is β, which is greater than α.

5. The waterproof horizontal push micro switch according to claim 4, characterized in that: The protective cover (7) includes a movable groove (73) for mounting the movable seat (32), a sensing contact (74) is provided at the groove top of the movable groove (73), a trigger contact is provided on the movable seat (32), and a spacing between the trigger contact and the sensing contact (74) is γ, where α is equal to γ.

6. The waterproof horizontal push micro switch according to claim 4, characterized in that: The housing (1) is provided with a waterproof cap (8), and the waterproof cap (8) is provided with a sliding groove (34) for the push rod (2) to pass through; The waterproof cap (8) comprises at least a first waterproof cover (81) and a second waterproof cover (82); the first waterproof cover (81) is in contact with the housing (1); the second waterproof cover (82) is arranged on a side of the first waterproof cover (81) away from the housing (1); and the diameter length of the first waterproof cover (81) is greater than the diameter length of the second waterproof cover (82).

7. The waterproof horizontal push micro switch according to claim 6, characterized in that: The waterproof cap (8) further comprises a third waterproof sleeve (83), the third waterproof sleeve (83) being arranged on a side of the second waterproof sleeve (82) away from the housing (1), and the diameter length of the second waterproof sleeve (82) being greater than the diameter length of the third waterproof sleeve (83); The first waterproof cover (81), the second waterproof cover (82) and the third waterproof cover (83) are all made of elastic material, and the sum of the deformation strokes d of the first waterproof cover (81), the second waterproof cover (82) and the third waterproof cover (83) is d≥α.

8. The waterproof horizontal push micro switch according to claim 6, characterized in that: The connection terminals of the normally closed static contact (5), the normally open static contact (6) and the movable contact (4) are arranged above the protective cover (7), and the movable seat (32) is arranged below the protective cover (7).

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