Button switch

Abstract

The utility model relates to a button switch which comprises a bottom shell and a static contact piece connected to the bottom shell, the bottom shell upwards forms an opening, the static contact piece is arranged at the bottom of the opening, a positioning seat is arranged in the opening, a through hole is formed in the positioning seat, a button is arranged in the through hole, the bottom of the button downwards protrudes to form a guide column, and the bottom of the guide column is connected with a movable contact piece. A pressure spring is arranged between the movable contact piece and the guide column, a plurality of movable contacts are formed on the side, close to the static contact piece, of the movable contact piece, and the movable contacts and the static contact piece are connected to form linkage fit. According to the utility model, the waterproof sleeve is sleeved above the positioning seat, so that moisture and dust in an external environment are effectively isolated, dryness and cleanness of circuit elements in the switch are ensured, and the working stability and reliability of the button switch in severe environments such as humid and dusty environments are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of switch equipment, in particular to a push button switch. Background Art

[0002] In an electrical control system, as a common control element, the push button switch is widely used in various circuit controls to manually send control signals to control contactors, relays, electromagnetic starters, etc. Although the traditional push button switch has a simple structure, it has deficiencies in terms of environmental adaptability such as waterproof and dustproof. In a humid or dusty environment, moisture or dust easily enters the interior of the switch, resulting in problems such as poor contact or short circuit, affecting the normal operation of the circuit. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a push button switch with waterproof and dustproof functions.

[0004] To achieve the above purpose, the utility model adopts such a push button switch, which includes a bottom case and a static contact piece connected to the bottom case. The bottom case forms an opening upwards, and the static contact piece is arranged at the bottom of the opening. A positioning seat is arranged in the opening, a through hole is formed on the positioning seat, a button is arranged in the through hole, a guide post protrudes downward from the bottom of the button, a moving contact piece is connected to the bottom of the guide post, a compression spring is arranged between the moving contact piece and the guide post. Multiple moving contact points are formed on the side of the moving contact piece close to the static contact piece, and the moving contact points are connected to the static contact piece to form a linkage cooperation. A notch is formed on the guide post, a return spring is arranged in the notch, one end of the return spring presses against the top of the notch, and the other end presses against the bottom case. A waterproof sleeve is sleeved above the positioning seat, and a pressing plate is arranged on the waterproof cover, and the pressing plate is connected to the bottom case.

[0005] Compared with the prior art, the beneficial effects of the above structure are as follows: By sleeving a waterproof sleeve above the positioning seat, the moisture and dust in the external environment are effectively isolated, ensuring the dryness and cleanliness of the internal circuit components of the switch, and significantly improving the working stability and reliability of the push button switch in harsh environments such as humidity and dust. The guide post at the bottom of the button is connected to the moving contact piece through a compression spring, ensuring the stability during the operation process. At the same time, multiple moving contact points are formed on the moving contact piece to cooperate with the static contact piece, providing accurate contact connection and avoiding problems such as misoperation or inaccurate operation.

[0006] This utility model is further configured such that the waterproof cover includes a cover body and a skirt provided on the outer periphery of the cover body. The upper end of the button is provided inside the cover body, the skirt is provided above the positioning seat, the cover body extends through the pressure plate to the outside, the skirt is provided below the pressure plate, a plurality of positioning holes are formed on the side wall of the bottom shell, and a plurality of positioning blocks are formed on the side surface of the pressure plate. The pressure plate is connected to the bottom shell through the cooperation of the positioning blocks and the positioning holes. The cover body completely wraps the upper end of the button, forming a closed waterproof and dustproof space, effectively preventing moisture and dust from entering the switch interior, thereby further enhancing the waterproof and dustproof performance of the button switch. The skirt is provided above the positioning seat, forming an additional waterproof and dustproof barrier. Even if water droplets or dust splash, they can be blocked by the skirt to prevent them from entering the switch interior.

[0007] This utility model is further configured such that a number of gear bumps are formed on the inner wall of the through hole, grooves are formed between adjacent gear bumps, and mating groove blocks are provided in the grooves formed at both ends of the button in the corresponding through holes. The design of the gear bumps and grooves provides clear operating positions for the button. Users can accurately judge the current position of the button according to the corresponding relationship between the bumps and grooves, thus avoiding misoperation.

[0008] This utility model is further configured such that the button further includes a chassis. A plurality of slots are formed on the chassis, barbs facing the slots are formed at the bottom of the chassis, a plurality of positioning portions movably connected in the slots are formed on the moving contact piece, and a moving slideway is formed on the positioning portion. The barb is connected in the moving slideway. Through the cooperation between the slots on the chassis and the positioning portions on the moving contact piece, the moving contact piece can be stably connected to the chassis and is not prone to shaking or falling off.

[0009] This utility model is further configured such that positioning columns for positioning the return spring and the moving contact piece are formed at the bottom of the opening. The positioning columns provide clear installation positions for the return spring and the moving contact piece, making the assembly process simpler and more accurate.

[0010] This utility model is further configured such that the bottom shell further includes foot pieces formed by injection molding. The foot pieces formed by injection molding can provide additional support to ensure that the entire device or equipment is more stable during placement or use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a perspective view of an embodiment of the present utility model.

[0012] Figure 2 is a perspective view of the bottom shell of an embodiment of the present utility model.

[0013] Figure 3 is an exploded view of an embodiment of the present utility model.

[0014] Figure 4 is an exploded assembly view of the button, the moving contact piece and the compression spring of an embodiment of the present utility model. Detailed implementation mode

[0015] As Figures 1-4 shown, an embodiment of the present utility model provides a push-button switch, which includes a bottom case 1 and a static contact piece 2 connected to the bottom case 1. The bottom case 1 forms an opening 11 upwards. The static contact piece 2 is arranged at the bottom of the opening 11. A positioning seat 3 is arranged in the opening 11. A through hole 31 is formed on the positioning seat 3. Eight gear bumps 32 are formed on the inner wall of the through hole 31. Grooves 33 are formed between adjacent gear bumps. A button 4 is arranged in the through hole 31. Groove blocks 41 which are matched are arranged at both ends of the button 4 in the grooves 33 formed in the corresponding through hole 31. A guide post 42 protrudes downwards from the bottom of the button 4. A moving contact piece 5 is connected to the bottom of the guide post 42. A compression spring 6 is arranged between the moving contact piece 5 and the guide post 42. A plurality of moving contact points 51 are formed on one side of the moving contact piece 5 close to the static contact piece 2. The moving contact points 51 are connected to the static contact piece 2 to form a linkage cooperation. A notch 43 is formed on the guide post 42. A return spring 7 is arranged in the notch 43. One end of the return spring 7 abuts against the top of the notch 43, and the other end abuts against the bottom case 1. A positioning post 13 for positioning the return spring 7 and the moving contact piece 5 is formed at the bottom of the opening 11. The button 4 further includes a chassis 44. A plurality of slots 441 are formed on the chassis 44. Barbs 442 facing the slots 441 are formed at the bottom of the chassis 44. A plurality of positioning parts 52 which are movably connected in the slots 441 are formed on the moving contact piece 5. Moving slideways 521 are formed on the positioning parts 52. The barbs 442 are connected in the moving slideways 521. A waterproof cover 8 is sleeved above the positioning seat 3. A pressing plate 9 is arranged on the waterproof cover 8. The pressing plate 9 is connected to the bottom case 1. The waterproof cover 8 includes a cover body 81 and a skirt 82 arranged on the outer periphery of the cover body 81. The upper end of the button 4 is arranged in the cover body 81. The skirt 82 is arranged above the positioning seat 3. The cover body 81 passes through the pressing plate 9 and extends to the outside. The skirt 82 is arranged below the pressing plate 9. A plurality of positioning holes 12 are formed on the side wall of the bottom case 1. A plurality of positioning blocks 91 are formed on the side surface of the pressing plate 9. The pressing plate 9 is connected to the bottom case 1 through the cooperation of the positioning blocks 91 and the positioning holes 12. The bottom case 1 further includes foot pieces 10 formed by injection molding.

[0016] Of course, in addition to the above embodiments, the present utility model can also have other various embodiments. Without departing from the essence of the technical solution of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model. And if these changes or deformations are equivalent to the technical solutions in this patent, then these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present utility model, and this utility model creation meets the actual R & D capabilities and resource conditions of the applicant and the utility modeler.

Claims

1. A push button switch, characterized in that: It includes a bottom shell and a static contact piece connected to the bottom shell, the bottom shell forms an opening upward, the static contact piece is arranged at the bottom of the opening, a positioning seat is arranged in the opening, a through hole is formed on the positioning seat, a button is arranged in the through hole, the bottom of the button protrudes downward to form a guide column, the bottom of the guide column is connected to a moving contact piece, a compression spring is arranged between the moving contact piece and the guide column, the moving contact piece forms a plurality of moving contacts on a side close to the static contact piece, the moving contact point is connected to the static contact piece to form a linkage cooperation, a notch is formed on the guide column, a reset spring is arranged in the notch, one end of the reset spring presses against the top of the notch, and the other end presses against the bottom shell, a waterproof cover is arranged above the positioning seat, a pressure plate is arranged on the waterproof cover, and the pressure plate is connected to the bottom shell.

2. The push button switch according to claim 1, characterized in that: The waterproof cover includes a cover body and a skirt arranged on the outer periphery of the cover body, the upper end of the button is arranged in the cover body, the skirt is arranged above the positioning seat, the cover body extends to the outside through the pressure plate, and the skirt is arranged below the pressure plate. The side wall of the bottom shell forms a plurality of positioning holes, and the side of the pressure plate forms a plurality of positioning blocks, and the pressure plate is connected to the bottom shell through the cooperation of the positioning blocks and the positioning holes.

3. The push button switch according to claim 1 or 2, characterized in that: A plurality of gear position protrusions are formed on the inner wall of the through hole, and grooves are formed between adjacent gear position protrusions. The grooves formed in the corresponding through holes at both ends of the button are provided with matching groove blocks.

4. The push button switch according to claim 1 or 2, characterized in that: The button also includes a chassis, a plurality of slots are formed on the chassis, a barb is formed at the bottom of the chassis facing the slot, a plurality of positioning parts movably connected in the slot are formed on the movable contact piece, a movable slide is formed on the positioning part, and the barb is connected in the movable slide.

5. The push button switch according to claim 1 or 2, characterized in that: The bottom of the opening forms a positioning column for positioning the return spring and the moving contact piece.

6. The push button switch according to claim 1 or 2, characterized in that: The bottom shell also includes injection-molded foot pieces.

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