CN204167163U - The signal trigger equipment that a kind of waterproof, anti-glue are bonding - Google Patents

Abstract

The utility model discloses a waterproof and glue-proof signal trigger device, which includes a permanent magnet and a magnetic induction element, and is characterized in that it also includes a button mechanism, the button mechanism includes a base and a guide tube, and the guide tube is fixedly connected to the base Above; there is a push rod inside the guide tube, a button is arranged on the top of the push rod, and the permanent magnet is embedded on the surface of the push rod, and the spring is elastically connected between the push rod and the guide tube seat, and the permanent magnet can move along with the push rod in the direction of spring expansion and contraction. Upward reciprocating movement; the magnetic induction element is arranged on the main control board of the trigger circuit outside the button mechanism, and the permanent magnet can pass through the sensing range of the magnetic induction element and trigger the magnetic induction element during the reciprocating movement. The utility model has the advantages of low cost, simple assembly process, high production efficiency, simplicity and reasonableness, and easy operation.

Description

A waterproof and glue-proof signal trigger device

technical field

The utility model belongs to the technical field of electronic products and relates to a signal trigger for electronic products, in particular to a waterproof and glue-proof signal trigger device.

Background technique

In electronic products, the signal trigger is generally through a kind of external intervention, so that the signal trigger can realize the control. After the trigger, the signal is transmitted to the central processing unit, and the central processing unit issues instructions, and the actuator realizes the operation. And this kind of external intervention is generally realized through mechanical buttons or magnetic intervention. With mechanical buttons, when the main control circuit board is sealed with moisture-proof requirements, the mechanical buttons will be directly welded on the circuit board. After the circuit board is sealed with glue, the buttons are easily bonded by glue and lose their elasticity; or connect the buttons to The outside of the circuit board, but corrosion will occur in a humid environment, and contact failure will occur.

The method of magnetic intervention can be divided into two types: one is to hold a permanent magnet in a certain range outside the shell to find the induction position of the magnetic induction element. At this position, the magnetic induction element is triggered by induction, and the induction position Uncertainty, and the unstable condition of hand-held movement, etc. cause the reliability of the induction of the magnetic induction element to be poor. It takes some time to find the position, the operability is poor, and time-consuming; another way is to use the principle of leverage to install the permanent magnet on the lever. At the end of the resistance arm, in order to keep the permanent magnet and the magnetic induction element at a safe distance, the resistance arm is much larger than the power arm. As shown in Figure 1, the main control board 101 is fixed with a magnetic induction element 102, and the permanent magnet 104 is installed on the lever 103 of the resistance arm. At one end, the lever 103 is arranged on the lever shaft seat 108 through the lever shaft, and the key seat 106 is arranged on the lever shaft seat 108, and the key cap 107 is installed on the key seat 106 by the spring 105; during work, the hand presses the key cap 107 to drive the lever 103 The power arm rotates along the lever shaft. At this time, the resistance arm of the lever 103 drives the permanent magnet 104 to rotate upwards along the lever shaft, and when it reaches the magnetic induction element 102, induction occurs; at this time, because there is no limiter, the resistance arm can still rotate upwards. Therefore, when the button cap 107 is pressed quickly, since the resistance arm is much larger than the power arm, the permanent magnet 104 will approach and leave the magnetic induction element 102 at a faster speed, and the magnetic induction element 102 will not sense the change of the magnetic field. induction, making this operation invalid.

Utility model content

To sum up, the purpose of this utility model is to provide a waterproof and glue-proof signal trigger device to solve the problem that the mechanical keys are easily bonded by glue or corroded by water vapor. The magnetic induction element is used to improve the trigger function at the same time. Accuracy, stability, reliability.

The technical scheme of the utility model is as follows:

A waterproof and glue-proof signal triggering device, which includes a permanent magnet and a magnetic induction element, and is characterized in that it also includes a button mechanism, the button mechanism includes a base and a guide tube, and the guide tube is fixedly connected to the base; There is a pressing rod, the top of the pressing rod is provided with a button, the surface of the pressing rod is embedded with the permanent magnet, the pressing rod is elastically connected between the guide tube and the base through a spring, and the permanent magnet can reciprocate along with the pressing rod in the direction of spring expansion and contraction; The magnetic sensing element is arranged on the main control board of the trigger circuit outside the key mechanism, and the permanent magnet can pass through the sensing range of the magnetic sensing element and trigger the magnetic sensing element during the reciprocating motion.

In the above-mentioned waterproof and glue-proof signal triggering device, a spring setting seat is provided in the center of the guide tube, and the spring setting seat is fixedly connected to the base, and a shoulder is provided on the lower part of the spring setting seat, and the above shoulder is provided with the The spring is provided with a cavity in the center of the spring setting seat; the center of the bottom of the pressing rod is provided with a fixed rod that can just extend into the cavity.

In the above-mentioned waterproof and glue-proof signal triggering device, the height of the shoulder is greater than 1/2 of the height of the spring mounting seat, and less than the length of the fixing rod; the length of the fixing rod is less than the height of the spring mounting seat.

In the above-mentioned waterproof and glue-proof signal triggering device, the guide tube is provided with a lever limiting device, and the lever limiting device is fixed on the base or in the guide tube.

In the above-mentioned signal trigger device for waterproof and glue-proof bonding, it is characterized in that: the limit device for pressing the lever is a limit post, the limit post is fixedly connected to the base, and the limit post can contact the press bar and prevent the press bar from continuing to press. Running, and the position of the permanent magnet when the lever is in contact with the limit post is just the best position to trigger the magnetic induction element.

In the above-mentioned waterproof and glue-proof signal triggering device, the lever limit device is a limit block, and the limit block is fixedly connected to the inner wall of the guide tube. The limit column can contact the lever and prevent the lever from continuing to run. And the position of the permanent magnet when the pressing rod is in contact with the limit post is just the best position for triggering the magnetic induction element.

In the above-mentioned waterproof and glue-proof signal triggering device, the spring is a stainless steel spring.

In the above-mentioned waterproof and glue-proof signal triggering device, the pressing rod is in the shape of a rectangle, and a button is arranged in the center of the top of the pressing rod, and a button cap is arranged on the button; the button cap is a rubber material cap; the guide tube is also a rectangular tube .

In the above-mentioned waterproof and glue-proof signal triggering device, the pressing rod is in the shape of a cylinder, and the center of the top of the pressing rod is provided with a key, and the key is provided with a key cap; the key cap is a rubber material cap; the guide tube is also a round tube .

The beneficial effect of the utility model is to provide a waterproof and anti-glue bonding signal trigger device. The rubber sleeve is used for waterproofing, and the permanent magnet cooperates with the magnetic induction element to realize anti-glue bonding. At the same time, a stainless steel spring is used to prevent the trigger from being magnetized by the permanent magnet. Mistakes, and prevent the loss of elasticity caused by air corrosion and make it difficult to reset; a limit device is set in the guide tube to avoid excessive operation of the permanent magnet, improve the accuracy and stability of the induction, and improve the reliability of the trigger device. The utility model has low cost and simple assembly process , high production efficiency, simple and reasonable, easy to operate.

Description of drawings

Fig. 1 is a schematic structural diagram of a signal trigger device in the prior art;

Fig. 2 is a schematic structural diagram of a waterproof and glue-proof signal trigger device provided by the present invention;

Fig. 3 is the assembly diagram of base and guide pipe in Fig. 2;

Fig. 4 is a schematic diagram of the structure of the lever shown in Fig. 2;

In the picture:

1. Base; 2. Guide tube; 3. Press rod; 4. Button; 5. Button cap; 6. Fixed rod; 7. Permanent magnet; 8. Spring; 9. Spring fixing seat; 10. Shoulder; 11. Cavity; 12. Magnetic induction element; 13. Main control board; 14. Limiting device.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the utility model, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 2, combined with Figure 3 and Figure 4, a waterproof and glue-proof signal trigger device includes a permanent magnet and a magnetic induction element, and also includes a key mechanism, which includes a base 1 and a guide tube 2. The guide tube 2 is fixedly connected to the base 1, and the guide tube 2 is rectangular, as shown in Figure 3; the guide tube 2 is provided with a pressing rod 3, and the structure of the pressing rod 3 is shown in Figure 4, and the pressing rod 3 is rectangular Body shape, button 4 is arranged in the center of the top of the lever 3, and a button cap 5 is arranged on the button 4. The button cap 5 is preferably a rubber material cap, and the center of the bottom of the lever 3 is provided with a fixed lever 6, and the surface of the lever 3 is embedded with the Permanent magnet 7; Press rod 3 is elastically connected between guide pipe 2 and base 1 by spring 8, spring 8 is a stainless steel spring, permanent magnet 7 can reciprocate along with press rod 3 in the stainless steel spring 8 telescopic direction.

The center of the guide pipe 2 is provided with a spring setting seat 9, which is fixedly connected to the base 1, and the bottom of the spring setting seat 9 is provided with a shoulder 10, which is a platform in the spring setting seat, and the shoulder 10 is fixedly connected to the above-mentioned The bottom of the spring 8 and the center of the spring setting seat 9 are provided with a cavity 11; In order to limit the rod and further guide the rod, the height of the shoulder 10 is greater than 1/2 of the height of the spring seat 9, and less than the length of the fixed rod 6; the length of the fixed rod 6 is less than that of the spring seat 9 high.

In addition, the spring can also be sleeved on the pressing rod.

The magnetic sensing element 12 is arranged on the trigger circuit main control board 13 outside the key mechanism; the permanent magnet 7 can pass through the sensing range of the magnetic sensing element 12 and trigger the magnetic sensing element 12 during the reciprocating motion.

The guide tube 2 is provided with a position-limiting device by a lever, which is fixed on the base or in the guide tube. Embodiment 1 of the position-limiting device is: as shown in Figure 1, the position-limiting device by the bar is a position-limiting Column 14, the limiting column 14 is fixedly connected on the base 1, the limiting column 14 can contact the pressing rod 3 and then prevent the pressing rod 3 from continuing to run downwards, and the permanent magnet 7 is located when the pressing rod 3 contacts the limiting column 14 The position is just the best position to trigger the magnetic induction element 12 .

Embodiment 2 of the limit device: the limit device by the lever can be a limit block, the limit block is fixedly connected on the inner wall of the guide tube, the limit post can contact the push rod and then prevent the push rod from continuing to move downward, and the push rod The position of the permanent magnet when it is in contact with the limit post is just the best position to trigger the magnetic induction element.

Of course, the pressing rod can also be in the shape of a circular shaft, and the guide tube can also be adaptively changed, which is also a round tube; The rod acts as a guide.

During work, press the button cap 5 with the hand, drive the pressing rod 3 and the permanent magnet 7 installed on the pressing rod 3 to move linearly and compress the stainless steel spring 8, when the lower end of the pressing rod 3 contacts the stop device 14 in the guide tube 2, Press rod 3 can't continue to move forward along the original straight line, now permanent magnet 7 is just in the best sensing position of magnetic induction element 12 on the main control board to induce the magnetic field of magnet, at this moment, permanent magnet 7 triggers magnetic induction element 12, thereby outputs certain The electric signal is transmitted to the central processing unit, and the central processing unit sends an instruction after receiving the electric signal to make the actuator perform corresponding operations; as shown in Figure 2, it is a schematic structural diagram of the utility model when it is in the triggered state; , due to the effect of the stainless steel spring 8, the rod 3 is retreated along the original straight line to reset.

The rubber sleeve at the top prevents water vapor from entering the trigger device, and the stainless steel spring at the bottom prevents false trigger signals from being magnetized by permanent magnets, and at the same time slows down the rate of corrosion; the linear movement of the lever makes it easy to press and resets reliably; The limit device at the lower end of the wire conduit ensures that the position of the induction between the permanent magnet and the magnetic induction element is accurate.

The utility model has been introduced in detail above. In this paper, the principles and implementation methods of the present utility model are described, and the above description is only used to help understand the core idea of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made to the utility model, and these improvements and modifications also fall into the protection of the claims of the utility model. within range.

Claims (9)

1. a signal trigger equipment for waterproof, anti-glue bonding, comprise permanent magnet and magnetic induction part, it is characterized in that: also comprise press button mechanism, described press button mechanism comprises base and guide pipe, and guide pipe is fixedly connected on base; Be provided with in guide pipe by bar, by masthead, portion is provided with button, is embedded with described permanent magnet by bar surface, is connected in guide pipe by bar with between base by spring, and permanent magnet can along with pressing bar reciprocating motion on telescopic spring direction; Described magnetic induction part is arranged on the circuits for triggering master control borad outside described press button mechanism, and permanent magnet can trigger magnetic induction part through the induction range of magnetic induction part in reciprocatory movement.

2. the signal trigger equipment of a kind of waterproof according to claim 1, anti-glue bonding, it is characterized in that: described guide pipe central authorities are provided with spring and arrange seat, spring arranges seat and is fixedly connected on base, spring arranges a bottom and is provided with shoulder, shoulder is arranged described spring, spring arranges a center and is provided with cavity; Describedly be provided with the fixed lever that be able to put in described cavity by bar bottom center.

3. the signal trigger equipment of a kind of waterproof according to claim 2, anti-glue bonding, is characterized in that: the height of shoulder is greater than spring arranges seat height 1/2nd, and is less than the length of fixed lever; The length of fixed lever is less than the height that spring arranges seat.

4. the signal trigger equipment of a kind of waterproof according to claim 3, anti-glue bonding, is characterized in that: be provided with by bar stopping means in described guide pipe, be fixed on base or in guide pipe by bar stopping means.

5. the signal trigger equipment of a kind of waterproof according to claim 4, anti-glue bonding, it is characterized in that: be limited post by bar stopping means, limited post is fixedly connected on base, limited post can contact by bar and stop and continue to run by bar, and when contacting with limited post by bar, permanent magnet present position is the optimum position of triggering magnetic induction part just.

6. the signal trigger equipment of a kind of waterproof according to claim 4, anti-glue bonding, it is characterized in that: be guide vane end stop by bar stopping means, guide vane end stop is fixedly connected on guide pipe inwall, limited post can contact by bar and stop and continue to run by bar, and when contacting with limited post by bar, permanent magnet present position is the optimum position of triggering magnetic induction part just.

7. the signal trigger equipment of a kind of waterproof according to any one of claim 1-6, anti-glue bonding, is characterized in that: described spring is stainless steel spring.

8. the signal trigger equipment of a kind of waterproof according to claim 7, anti-glue bonding, it is characterized in that: be cuboid shape by bar, be provided with button by bar center of top, button is provided with button cap; Button cap is elastomeric material cap; Guide pipe is also rectangular tube.

9. the signal trigger equipment of a kind of waterproof according to claim 7, anti-glue bonding, it is characterized in that: be cylindrical shape by bar, be provided with button by bar center of top, button is provided with button cap; Button cap is elastomeric material cap; Guide pipe is also pipe.