Short self-resetting button switch

Abstract

The short self-resetting button switch comprises a shell, a pressing end and a connecting rod limiting block, the pressing end comprises a connecting rod transversely provided with a movable contact piece, the two ends of the movable contact piece extend out of the circumferential side of the connecting rod respectively, movable contacts are distributed on the upper side and the lower side of the two ends of the movable contact piece, and an NC contact and an NO contact are distributed relative to the two ends of the movable contact piece respectively. The connecting rod limiting block is arranged on the connecting rod, corresponds to the movable contacts at the two ends of the movable contact piece respectively and is located within the stroke range of the connecting rod, a protruding block is formed on the connecting rod, and a track groove is formed in the connecting rod limiting block and comprises a pressing end downward-pressing limiting area and a pressing end rebound limiting area. According to the button switch, the protruding block is clamped in or withdrawn from the position between the pressing end downward-pressing limiting area and the pressing end rebound limiting area, so that a circuit can be continuously switched on or switched off, the button switch is more flexible and diversified in use occasions, various different circuit control requirements can be met, and the button switch can be suitable for being used in a circuit needing more complex control.

Description

TECHNICAL FIELD

[0001] The utility model relates to switch technical field especially relates to a short self-resetting button switch. BACKGROUND

[0002] The button switch is a kind of switch using button to push transmission mechanism, make moving contact and static contact and realize circuit switching on or off. When using in some precise control or limited space, the button switch needed is generally short style switch button, the existing short button switch due to its overall volume is small, that is, most short button switches will not be easy to design more structures inside button switch, generally only involve shell, limit in shell and can be pressed in shell Pressing end, NC pin and NO pin limited in shell and can be extended in shell for switch electrical connection;

[0003] In use, the contact or away between the static contact of NC pin and NO pin position driven by moving contact is realized by the rebound of pressing end after being pressed towards shell, to realize the opening and closing operation of short button switch, and the operation form of short button switch is also only pressed and powered, and released and rebounded immediately, so that the use occasion of most existing short button is relatively limited, and it is generally not possible to meet the environment of current output after pressing switch. SUMMARY

[0004] In view of the above-mentioned shortcomings, the utility model provides a short self-resetting button switch for precise control or limited space, which meets the current output.

[0005] In order to realize the above purpose, the utility model adopts a short self-resetting button switch, including shell, pressing end limited in shell and extended outside shell and executed pressing towards shell direction, NC pin and NO pin limited in shell and can be extended in shell for switch electrical connection, NC contact and NO contact distributed on NC, NO pin respectively, and moving contact with pressing end action, the pressing end includes connecting rod extended in shell, the self-resetting button switch further includes connecting rod limiting block limited in the side of connecting rod, the connecting rod is provided with moving contact piece, and both ends of moving contact piece are extended on the circumferential side of connecting rod and move up and down with connecting rod, the moving contact is distributed on the upper side and lower side of both ends of moving contact piece, the NC contact and NO contact are respectively distributed relative to both ends of moving contact piece, and correspond to moving contact on both ends of moving contact piece respectively, and located in the stroke range of connecting rod;

[0006] The connecting rod is formed with a protruding block on a side opposite to the connecting rod limiting block, the connecting rod limiting block is clamped in the shell, and a track groove is formed on a side facing the connecting rod, the track groove comprises a pressing end lower pressing limiting area and a pressing end rebound limiting area, the protruding block extends in the track groove, the protruding block moves up and down along with the connecting rod and slides along the track in the track groove, the protruding block is limited by clamping in the pressing end lower pressing limiting area to form continuous conduction of the circuit, and the protruding block is limited by clamping in the pressing end rebound limiting area to form disconnection of the circuit.

[0007] The utility model further sets up, the self -recovery formula button switch still includes elastic member, the connecting rod is opened the inner bore, the connecting rod's rod wall is opened the transverse through -going area which penetrates the connecting rod, the transverse through -going area is linked together with the inner bore, and the movable contact piece is transversely arranged in the connecting rod through the transverse through -going area, and one end of the elastic member abuts on the hole bottom position of the inner bore, and the other end abuts on the movable contact piece, the connecting rod is pressed down by the pressing end, forms the contact between the movable contact and NO contact point, the elastic member is reset by the down -pressing action, forms the contact between the movable contact and NC contact point, and the elastic member is a spring.

[0008] The utility model further sets up, the shell is opened the sliding area on a side opposite to the protruding block on the connecting rod, the connecting rod limiting block is clamped in the sliding area, and the protruding block moves up and down along with the connecting rod, the connecting rod limiting block moves in the track direction of the track groove in the sliding area through the moving action, forms the track sliding action of the protruding block in the track groove of the connecting rod limiting block.

[0009] The utility model further sets up, the pressing end still includes the pressing part, and one end of the pressing part faces the shell, the connecting rod includes the inner cooperation end extending to the side of NC pin NO pin and the outer connecting end extending to the side of the pressing part, the other end of the pressing part is connected with the end of the outer connecting end, the waterproof pad is sleeved on the outer connecting end, and the outer edge of the waterproof pad extends to the shell direction, the waterproof between the outer connecting end of the connecting rod and the shell is formed through the waterproof pad, and the waterproof pad is a silica gel pad.

[0010] The utility model further sets up, waterproof pad is tapered structure, the connecting rod on relative to the position of small end of tapered waterproof pad is equipped with annular groove, the small end of tapered waterproof pad forms has the annular block of inlaying type setting of annular groove, and the annular block and annular groove between tight fit type setting, the waterproof pad big end embedding groove is formed to the big end face position of tapered waterproof pad on the shell, and the inner circumferential face of shell forms the inner convex pressure block, and the inner convex pressure block is opposite to waterproof pad big end embedding groove, through the big end face of tapered waterproof pad inlaying in waterproof pad big end embedding groove, and the inner convex pressure block is in contact on the big end of tapered waterproof pad on the side opposite to the big end face of tapered waterproof pad.

[0011] The utility model further sets up, the trajectory groove is reverse peach heart shape structure, the press end rebound limiting area is distributed in the peach heart tip portion of reverse peach heart shape trajectory groove, and the press end lower pressure limiting area is distributed in the peach heart recessed portion of reverse peach heart shape trajectory groove.

[0012] The utility model discloses the beneficial effect lies in: through the press end on the button switch involving connecting rod, and the movable contact piece is transversely arranged on the connecting rod, and the both ends of movable contact piece are respectively extended from the circumferential side of connecting rod, and the upper side and the lower side of both ends of movable contact piece are respectively distributed with upper movable contact point, and NC contact point and NO contact point are designed on the position of the stroke of connecting rod on the shell, that is, two groups of movable contact points (NC contact point and NO contact point are regarded as a group of movable contact points) are designed on the position of the upper side and the lower side of both ends of movable contact piece corresponding to the stroke of connecting rod, in addition, the button switch involved in the utility model is provided with convex block on the connecting rod, and connecting rod limiting block is designed on the position of convex block on the shell, and trajectory groove is formed on the side of connecting rod limiting block opposite to convex block, and the trajectory groove includes press end lower pressure limiting area and press end rebound limiting area.

[0013] When the button end of the button switch is pressed, the movable contact inside the button switch switches from contact with the NC contact to contact with the NO contact, and the protruding block on the connecting rod moves along the preset track on the track groove. When the pressing end is pressed to the position of contact with the NO contact, the protruding block on the connecting rod is clamped into the pressing end lower limit area of the track groove, that is, the limit after the pressing end is pressed down is realized. When the pressing force on the pressing end is removed, the pressing end does not rebound correspondingly, thereby realizing continuous conduction of the circuit. When the circuit needs to be turned off, the pressing end is pressed again to make the protruding block come out of the pressing end lower limit area of the track groove, so that the restraint force of the pressing end on the button switch is released, and the pressing end can be reset, that is, the movable contact and the NC contact are in contact again, and the protruding block on the connecting rod is clamped into the pressing end rebound limit area of the track groove.

[0014] Furthermore, the short self-resetting button switch can support the functions of opening and closing, and can be used in occasions requiring continuous current output. Through the two groups of movable and fixed contacts, four pins can be extended from the shell of the short self-resetting button switch, so that the short self-resetting button switch can be used in more flexible and various occasions, and can meet various circuit control requirements, and can also be used in more complex circuits. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a perspective view of the short self-resetting button switch according to an embodiment of the present application;

[0016] Figure 2 is a top view of the short self-resetting button switch according to an embodiment of the present application;

[0017] Figure 3 is an A-A sectional view of the short self-resetting button switch according to an embodiment of the present application; Figure 2

[0018] is a B part enlarged view of the short self-resetting button switch according to an embodiment of the present application; Figure 4 Figure 3 is an A part enlarged view of the short self-resetting button switch according to an embodiment of the present application;

[0019] Figure 5 Figure 3 is a cooperation schematic view of the spring, the movable contact and the connecting rod according to an embodiment of the present application, and the cooperation between the movable and fixed contacts on the shell;

[0020] Figure 6 is a cooperation schematic view of the spring, the movable contact and the connecting rod according to an embodiment of the present application, and the cooperation between the movable and fixed contacts on the shell;

[0021] Figure 7 ​​Is the cooperation schematic view between the connecting rod and the shell of the specific embodiment of the utility model;

[0022] Figure 8 Is the three-dimensional schematic view of the waterproof pad of the specific embodiment of the utility model;

[0023] Figure 9 Is the explosion schematic view between the connecting rod limiting block and the connecting rod of the specific embodiment of the utility model. DETAILED DESCRIPTION

[0024] As Figures 1-9 Indicated, the specific embodiment of the utility model is a short self-resetting button switch, including shell 2, in the shell 2 and the press end 1 that stretches out of the shell 2 and executes press in the direction of shell 2, be limited in the shell 2 and can be in the shell 2 and be used for switch electrical connection NC pin 3 and NO pin 4 that stretches out, respectively distributed NC contact 40 and NO contact 20 on NC, NO pin 4, and the movable contact 10 that acts with press end 1, press end 1 includes the connecting rod 6 that stretches in the shell 2, the self-resetting button switch still includes the connecting rod limiting block 30 that is limited in the side of connecting rod 6, the movable contact piece 9 is horizontally arranged on connecting rod 6, and both ends of movable contact piece 9 respectively stretch out on the circumferential side of connecting rod 6 and move up and down with connecting rod 6, movable contact 10 is distributed on the upper and lower sides of both ends of movable contact piece 9, NC contact 40, NO contact 20 are respectively distributed relative to both ends of movable contact piece 9, and respectively correspond with movable contact 10 on both ends of movable contact piece 9, and are located in the stroke range of connecting rod 6;

[0025] The protruding block 62 is formed on connecting rod 6 relative to the side towards connecting rod limiting block 30, connecting rod limiting block 30 is clamped in shell 2, and track groove 301 is formed on the side towards connecting rod 6, track groove 301 includes press end down limit area f and press end rebound limit area e, protruding block 62 stretches in track groove 301, protruding block 62 moves up and down with connecting rod 6 and makes track sliding in track groove 301, protruding block 62 is limited by clamping in press end down limit area f, forms circuit continuous conduction, and is limited by clamping in press end rebound limit area e, forms the disconnection of circuit.

[0026] By the press end 1 on the button switch is connected with the connecting rod 6, and the moving contact 9 is arranged on the connecting rod 6, and the two ends of the moving contact 9 are respectively extended from the circumferential side of the connecting rod 6, and the upper and lower sides of the two ends of the moving contact 9 are respectively distributed with the upper moving contact 10, and the NC contact 40 and the NO contact 20 are designed on the shell 2 corresponding to the position of the stroke of the connecting rod 6, that is, two groups of moving contact points (that is, one NC contact 40 and one NO contact 20 are regarded as a group of moving contact points) are designed on the two ends of the moving contact 9 corresponding to the upper and lower sides of the stroke of the connecting rod 6, and in addition, the button switch related to the convex block 62 on the connecting rod 6 is designed on the shell 2 corresponding to the position of the convex block 62, and the connecting rod limiting block 30 is designed on the connecting rod limiting block 30, and the track groove 301 is arranged on the side of the connecting rod limiting block 30 relative to the convex block 62, and the track groove 301 comprises a press end pressing limiting area f and a press end rebound limiting area e;

[0027] Therefore, when the button end of the button switch is pressed, the moving contact 10 in the button switch is switched from the contact between the NC contact 40 to the contact with the NO contact 20, and the convex block 62 on the connecting rod 6 moves along the preset track on the track groove 301, and when the press end 1 is pressed to the position, that is, the moving contact 10 is in contact with the NO contact 20, the convex block 62 on the connecting rod 6 is clamped into the press end pressing limiting area f of the track groove 301, that is, the limiting of the press end 1 after pressing is realized, and the button switch in this state will not rebound correspondingly after the force of the pressing end is removed, thereby realizing the continuous conduction of the circuit, and when the circuit needs to be turned off, the press end 1 is pressed again, so that the convex block 62 is released from the press end pressing limiting area f of the track groove 301, thereby releasing the restraint force of the press end 1 on the button switch, so that the press end 1 can be reset, that is, the moving contact 10 is in contact with the NC contact 40 again, and the convex block 62 on the connecting rod 6 is clamped into the press end rebound limiting area e of the track groove 301;

[0028] Further, the short self-resetting button switch related to the utility model can support the function of opening and closing, so that it can be used in occasions requiring continuous current output, and through the two groups of moving contact points, four pins can be extended on the shell 2 of the short self-resetting button switch, so that the use occasions of the short button switch are more flexible and various, and can cope with various circuit control requirements, and can also be used in more complex circuits.

[0029] As Figure 3 , 5The self-resetting button switch shown in Fig. 6 further comprises a spring 8, an inner hole 61 is formed in the connecting rod 6, a transverse through hole 64 is formed in the rod wall of the connecting rod 6 and extends through the connecting rod 6, the transverse through hole 64 is communicated with the inner hole 61, the movable contact 9 is horizontally arranged in the connecting rod 6 through the transverse through hole 64, one end of the spring 8 abuts against the bottom of the inner hole 61, and the other end abuts against the movable contact 9, the connecting rod 6 is pressed down by the pressing end 1 to form the contact between the movable contact 10 and the NO contact 20, the spring 8 is pressed down to reset to form the contact between the movable contact 10 and the NC contact 40, the spring 8 is designed as a spring; the connecting rod 6 can be reliably used in the short self-resetting button switch, that is, the connecting rod 6 can be reset reliably through the action of the spring 8 after the connecting rod 6 is pressed down by the pressing end 1, and the movable contact 9 with the movable contact 10 can be reliably installed and limited in the connecting rod 6, thereby ensuring the reliability of the design of the utility model.

[0030] As shown in Fig. 6, Figure 3 , 5 As shown in Fig. 7, a sliding area 21 is formed on the shell 2 relative to the side of the protruding block 62 on the connecting rod 6, the connecting rod limiting block 30 is clamped in the sliding area 21 and moves up and down with the protruding block 62 on the connecting rod 6, the connecting rod limiting block 30 moves in the track direction of the track groove 301 in the sliding area 21 to form the design that the protruding block 62 moves in the track of the track groove 301 of the connecting rod limiting block 30; since the connecting rod 6 and the protruding block 62 formed on the connecting rod 6 move straight up and down, the connecting rod limiting block 30 can be clamped in the sliding area 21, so that when the button switch is used, the protruding block 62 on the connecting rod 6 moves straight up and down, the protruding block 62 slides in the track groove 301 along the preset track line when the protruding block 62 moves down, the protruding block 62 can only move straight up and down, and the connecting rod limiting block 30 rotates in the sliding area 21 like a coil when the protruding block 62 moves up and down, thereby reliably driving the limiting and limiting release of the connecting rod 6, and further ensuring the rationality and reliability of the design of the utility model.

[0031] As shown in Fig. 6, Figure 3 , 5As shown in Figure 7, the pressing end 1 also includes a pressing part 11, one end of which faces outward from the housing 2. The connecting rod 6 includes an inner mating end b extending to one side of the NC pin 3 and the NO pin 4, and an outer connecting end a extending to one side of the pressing part 11. The other end of the pressing part 11 is connected to the end of the outer connecting end a. A waterproof pad 5 is fitted on the outer connecting end a, and the outer edge of the waterproof pad 5 extends towards the housing 2. The waterproof pad 5 forms a waterproof barrier between the outer connecting end a of the connecting rod 6 and the housing 2. The waterproof pad 5 has a conical structure. An annular groove 63 is formed on the connecting rod 6 at a position relative to the small end c of the conical waterproof pad 5. An annular block 51 is formed on the small end c of the conical waterproof pad 5, which is embedded in the annular groove 63. The annular block 51 and the annular... The grooves 63 are tightly fitted together. A waterproof pad large end embedding groove 22 is formed on the housing 2 at the position of the large end d end face of the conical waterproof pad 5. An inner protruding pressing block 21 is formed on the inner circumferential surface of the housing 2. The inner protruding pressing block 21 is opposite to the waterproof pad large end embedding groove 22 and is embedded in the waterproof pad large end embedding groove 22 through the large end d end face of the conical waterproof pad 5. The inner protruding pressing block 21 abuts against the side of the large end d of the conical waterproof pad 5 that is away from the large end d end face of the conical waterproof pad 5. The waterproof pad 5 is preferably designed as a silicone pad. This ensures that the button switch involved in this utility model has reliable waterproof performance. The waterproof performance can be greatly improved compared with the existing ordinary waterproof forms, and the waterproof rating can reach IP67.

[0032] like Figure 9 As shown, the track groove 301 has a reverse heart-shaped structure. The pressing end rebound limiting area e is distributed in the heart-shaped tip of the reverse heart-shaped track groove 301, and the pressing end pressing limiting area f is distributed in the heart-shaped recessed part of the reverse heart-shaped track groove 301. This design can ensure the reliability of the design of this utility model and the convenience of implementation in the production stage.

Claims

1. A short self-resetting push-button switch, comprising a housing, a pressing end that is limited within the housing and extends out of the housing and is actuated towards the housing, NC pins and NO pins that are limited within the housing and can extend out of the housing for electrical connection, NC contacts and NO contacts respectively distributed on the NC and NO pins, and a moving contact that actuates with the pressing end, characterized in that: The pressing end comprises a connecting rod extending into the shell, and a connecting rod limiting block is limited on the side of the connecting rod, a movable contact piece is transversely arranged on the connecting rod, and the two ends of the movable contact piece extend on the circumferential side of the connecting rod and move up and down with the connecting rod, movable contact points are arranged on the upper and lower sides of the two ends of the movable contact piece, NC contact points and NO contact points are arranged on the two ends of the movable contact piece respectively and correspond to the movable contact points on the two ends of the movable contact piece, and the NC contact points and the NO contact points are located in the stroke range of the connecting rod. A protruding block is formed on the connecting rod relative to the side of the connecting rod limiting block, the connecting rod limiting block is clamped in the shell, and a track groove is formed on the side of the connecting rod limiting block, the track groove comprises a pressing end depressing limiting area and a pressing end rebound limiting area, the protruding block extends in the track groove, the protruding block moves up and down with the connecting rod and slides in the track groove, the protruding block is limited by clamping in the pressing end depressing limiting area to form a continuous circuit conduction, and the protruding block is limited by clamping in the pressing end rebound limiting area to form a circuit disconnection.

2. The short fall self-resetting push button switch of claim 1, wherein: The self-resetting button switch further comprises a resilient member, an inner hole is formed in the connecting rod, a transverse through area penetrating through the connecting rod is formed in the rod wall of the connecting rod, the transverse through area is communicated with the inner hole, the movable contact piece is transversely arranged in the connecting rod through the transverse through area, one end of the resilient member abuts against the bottom of the inner hole, and the other end of the resilient member abuts against the movable contact piece, the movable contact piece and the NO contact point are contacted by depressing the connecting rod with the pressing end, and the movable contact piece and the NC contact point are contacted by the resilient member.

3. The short throw self-replicating button switch of claim 2, wherein: A sliding area is formed on the shell relative to the side of the protruding block on the connecting rod, the connecting rod limiting block is clamped in the sliding area, and the protruding block moves up and down with the connecting rod, the connecting rod limiting block moves in the track direction of the track groove in the sliding area to form the track sliding movement of the protruding block in the track groove of the connecting rod limiting block.

4. The short fall self-resetting push button switch according to claim 2 or 3, wherein: The pressing end further comprises a pressing part, one end of the pressing part faces the shell, the connecting rod comprises an inner fitting end extending to the side of the NC pin and the NO pin and an outer connecting end extending to the side of the pressing part, the other end of the pressing part is connected with the end of the outer connecting end, a waterproof pad is sleeved on the outer connecting end, and the outer edge of the waterproof pad extends towards the shell, and the waterproof pad forms waterproof between the outer connecting end of the connecting rod and the shell.

5. The short fall self-resetting pushbutton switch of claim 4, wherein: The waterproof pad is in a conical structure, an annular groove is formed on the connecting rod relative to the position of the small end of the conical waterproof pad, an annular block is formed on the small end of the conical waterproof pad and is in an embedded mode relative to the annular groove, the annular block and the annular groove are in a tight fit mode, a waterproof pad large end embedding groove is formed on the shell relative to the position of the end face of the large end of the conical waterproof pad, an inner convex pressing block is formed on the inner circumferential surface of the shell and is opposite to the waterproof pad large end embedding groove, the large end of the conical waterproof pad is embedded in the waterproof pad large end embedding groove, and the inner convex pressing block is in abutment with the large end of the conical waterproof pad relative to the side away from the end face of the large end of the conical waterproof pad.

6. The short fall self-resetting pushbutton switch of claim 3, wherein: The trajectory groove is in a reverse peach heart shape structure, the pressing end rebound limiting area is distributed on the peach heart tip part of the reverse peach heart shape trajectory groove, and the pressing end downward limiting area is distributed on the peach heart recessed part of the reverse peach heart shape trajectory groove.

7. The short fall self-resetting pushbutton switch of claim 4, wherein: The elastic member is a spring, and the waterproof pad is a silica gel pad.

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