CN104506082B - Battery-free remote controller - Google Patents

Abstract

The invention relates to a battery-free remote controller, which belongs to the field of new energy applications. The end of the housing is equipped with a guard plate, and the inner side of the front panel of the housing is equipped with a circuit board with a transmitter module; the piezoelectric film bonded to the metal film and its arc protrusions constitute a piezoelectric vibrator, and the piezoelectric vibrator and the riveted pins at both ends The sleeves constitute the transducer, and the pin sleeves are respectively sleeved on the fixed pin and the movable pin. The two ends of the fixed pin are placed in the pin holes at the upper ends of the left and right side walls of the housing, and the two ends of the movable pin are placed in the guide grooves at the lower ends of the left and right side walls of the housing. Inside; the guide groove on the inclined arm of the curved plate is set on the movable pin, the protruding shafts on both sides of the vertical arm of the curved plate are placed in the pin holes at the lower ends of the left and right side walls of the housing, the button is installed on the flat arm of the curved plate, and the There are wire holes; the flat arm of the curved plate protrudes from the window at the lower end of the front panel of the housing, and the button is placed outside the housing; features and advantages: the piezoelectric vibrator is stretched through the rotation of the curved plate, and the power generation and switch control are synchronized, and the structure and Simple operation, no impact and noise, high power supply and mechanical reliability, strong power generation capacity.

Description

A battery-free remote control

technical field

The invention belongs to the field of new energy applications, and in particular relates to a battery-free remote controller for wireless control of combined lamps.

Background technique

The traditional fixed lamp switch is connected to the lamp through wires. Because wiring inside the wall is required, the construction and decoration costs are high, and it is difficult to change the position after it is determined. In recent years, with the increasing popularity of combined lamps, lamp switches have gradually transitioned from wall-fixed switches to portable or movable remote controls. The current lamp remote controllers are basically powered by batteries, which cannot be used when the battery power is exhausted. At the same time, discarded batteries will also cause serious environmental pollution and waste of resources. Therefore, the inventor has successively proposed a variety of toggle-type piezoelectric self-powered remote controllers, such as Chinese patents 200810051579.9, 200810051157.1, and 201010165882.9, etc., but subsequent development practices have shown that the buttons of the patent 200810051579.9 lack the necessary guiding limit. The piezoelectric vibrator cannot be reliably moved and reset smoothly, and the reliability is poor; the patent 200810051157.1 and the patent 201010165882.9 respectively move the cantilever beam piezoelectric vibrator by rotating the shifting teeth and the dial that can move forward and backward, and its structure and movement process are relatively complicated , and the processing cost is high, tiny friction and wear can lead to the failure of the shifting gear and the shifting block, and the reliability is low; the most important thing is that the above-mentioned shifting will generate a lot of noise in the process of exciting the power generation, so it is not convenient for families to sleep at night. application, and the piezoelectric vibrator will be damaged due to excessive tensile stress during the bidirectional deformation process.

Contents of the invention

Aiming at a series of problems existing in the existing lamp remote controller, the present invention proposes a self-powered remote controller based on a telescopic piezoelectric vibrator. The embodiment adopted in the present invention is: the end of the housing is equipped with a guard plate through screws, the inner side of the front panel of the housing is equipped with a circuit board through screws, and a transmitting module is welded on the circuit board; the S-shaped metal film with arc protrusions and its The piezoelectric film bonded to the arc protrusion constitutes the piezoelectric vibrator, and the different piezoelectric films on the piezoelectric vibrator are connected through the wire L1, and the piezoelectric vibrator is connected to the circuit board through the wire group L3; the piezoelectric vibrator and its two ends are connected The riveted pin sleeve constitutes the transducer. The pin sleeves at both ends of the transducer are respectively set on the fixed pin and the movable pin. The longitudinal guide grooves on the lower ends of the left and right side walls of the body; the guide grooves on the two side walls of the square cavity on the inclined arm of the curved plate are set on the movable pin, and the protruding shafts on both sides of the vertical arm of the curved plate are respectively placed in the lower ends of the left and right side walls of the housing. In the pin hole, the button is installed on the flat arm of the curved plate, and the flat arm of the curved plate is provided with a wire hole, and the wire group L2 connecting the button and the circuit board passes through the wire hole; the flat arm of the curved plate extends from the window at the lower end of the front panel of the housing. out, the button is placed outside the housing.

In order to maximize the power generation of the piezoelectric vibrator and avoid damage to the piezoelectric film due to excessive tensile stress, the minimum radius of the arc outer surface of the metal film of the piezoelectric vibrator in the natural state without external force is Where α=h _m /(h _m +h _p ), h _p and h _m are the thicknesses of the piezoelectric film and the metal film respectively, β=E _m /E _p , E _p and E _m are the Young's modulus of the piezoelectric film and the metal film respectively, k ₃₁ and T _p are the transverse electromechanical coupling coefficient and the allowable tensile stress of the piezoelectric material respectively; When the upper surface of the flat arm and the upper frame of the shell window are in contact with each other, the center distance between the fixed pin and the movable pin of the pin sleeves at both ends of the transducer should be greater than or equal to the distance between the pin sleeves at both ends of the transducer in the natural state. Center distance to avoid damage to the piezoelectric film due to excessive tensile stress.

In the present invention, when the external force pushes the button downward, the circuit of the button is connected, and the button forces the curved plate to rotate around the center of the protruding shaft on both sides of its vertical arm; at the same time, the upper edge of the guide groove on the curved plate is pushed to place The movable pin in the guide groove moves downward along the vertical guide groove at the lower end of the left and right side walls of the casing, so that the center distance between the fixed pin and the movable pin increases, the piezoelectric vibrator is elongated, and the piezoelectric vibrator is stretched during the elongation process. That is to convert mechanical energy into electrical energy; the generated electrical energy is directly supplied to the transmitting module after being processed by the electrical energy conversion circuit on the circuit board, and the transmitting module sends a control signal; after the button is released, the circuit of the button is disconnected, and the elastic force of the piezoelectric vibrator itself The curved plate is rotated upward, and the piezoelectric vibrator and the curved plate are reset to the initial state; during the reset process, the piezoelectric vibrator also generates electric energy, but because the circuit of the button is in the disconnected state, the signal transmitting module on the circuit board does not emit effective control. Signal.

Features and advantages: ①The piezoelectric vibrator is rotated and stretched by the curved plate, and the power generation is synchronized with the switch control, so the overall structure and operation of the remote control are simple, the power supply reliability is high, and there is no impact and noise; ②The piezoelectric vibrator only bears the action of tension, The piezoelectric film will not be damaged due to excessive tensile stress, and the mechanical reliability is high; ③The stress distribution of the telescopic piezoelectric vibrator is uniform and the power generation capacity is strong.

Description of drawings

Fig. 1 is a schematic structural view of a remote controller in a preferred embodiment of the present invention;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the structural representation of transducer in a preferred embodiment of the present invention;

Fig. 4 is a schematic structural view of a curved plate in a preferred embodiment of the present invention;

Fig. 5 is the left view of Fig. 4;

detailed description:

The end of the housing 1 is installed with a guard plate 8 through screws, and the inner side of the front panel 1a of the housing 1 is installed with a circuit board 2 through screws, and the transmitting module 5 is welded on the circuit board 2; S-shaped metal with arc protrusions The piezoelectric film h2 bonded to the film h1 and its arc protrusion constitutes the piezoelectric vibrator h, and the different piezoelectric films h2 on the piezoelectric vibrator h are connected by wires L1, and the piezoelectric vibrator h is connected to the circuit board through the wire group L3 2 connection; the piezoelectric vibrator h and the pin sleeves 4 riveted at both ends constitute the transducer H, and the pin sleeves 4 at both ends of the transducer H are respectively set on the fixed pin 3 and the movable pin 3', and the two ends of the fixed pin 3 are respectively Placed in the pin hole at the upper end of the left side wall 1c and right side wall 1d of the housing 1, the two ends of the movable pin 3' are placed in the longitudinal guide grooves 1e and 1f at the lower end of the left side wall 1c and the right side wall 1d of the housing 1 Inside; the guide grooves 7d and 7d' on the side walls of the square cavity 7c on the oblique arm 7b of the curved plate 7 are set on the moving pin 3', and the protruding shafts 7f and 7f' on both sides of the vertical arm 7e of the curved plate 7 are respectively placed In the pin hole at the lower end of the left side wall 1c and the right side wall 1d of the housing 1, the button 6 is installed on the flat arm 7a of the curved plate 7, and the flat arm 7a of the curved plate 7 is provided with a wire hole 7g, connecting the button 6 and The wire group L2 of the circuit board 2 passes through the wire hole 7g;

In order to maximize the power generation of the piezoelectric vibrator h and avoid damage to the piezoelectric film h2 due to excessive tensile stress, the minimum radius of the arc outer surface of the metal film h1 of the piezoelectric vibrator h is not subjected to external force is Wherein α=h _m /(h _m +h _p ), h _p and h _m are the thicknesses of piezoelectric film h2 and metal film h1 respectively, β=E _m /E _p , E _p and E _m are the Young's modulus of the piezoelectric film h2 and the metal film h1 respectively, k ₃₁ and T _p are the transverse electromechanical coupling coefficient and the allowable tensile stress of the piezoelectric material, respectively; When the upper surface of the flat arm 7a of the curved plate 7 is in contact with the upper frame of the window 1b of the housing 1, the center distance l between the fixed pin 3 and the movable pin 3' of the pin sleeves 4 at both ends of the transducer H should be greater than Or equal to the center distance L between the pin sleeves 4 at both ends of the transducer H in the natural state, that is, l≥L, so as to avoid damage to the piezoelectric film h2 due to excessive tensile stress.

In the present invention, when the external force pushes the button 6 downward, the circuit of the button 6 is connected, and the button 6 forces the curved plate 7 to rotate around the centers of the protruding shafts 7f and 7f' on both sides of the vertical arm 7e; at the same time, the curved plate 7 The upper edges of the upper guide grooves 7d and 7d' push the movable pin 3' placed in the guide grooves 7d and 7d' along the vertical guide grooves 1e and 1f at the lower ends of the left side wall 1c and the right side wall 1d of the housing 1 Move downward, so that the center distance between the fixed pin 3 and the movable pin 3' increases, the piezoelectric vibrator h is stretched, and the piezoelectric vibrator h is about to convert mechanical energy into electrical energy during the elongation process; the generated electrical energy passes through the circuit board 2 After being processed by the electric energy conversion circuit on the circuit board, it is directly supplied to the transmitting module 5, and the transmitting module 5 sends out a control signal; after the button 6 is released, the circuit of the button 6 is disconnected, and the elastic force of the piezoelectric vibrator h itself makes the curved plate 7 rotate upwards, pressing Both the electric vibrator h and the curved plate 7 are reset to the initial state; during the reset process, the piezoelectric vibrator h also generates electric energy, but because the circuit of the button 6 is in the disconnected state, the signal transmitting module 5 on the circuit board 2 does not transmit effective control signals .

Claims (1)

1. A battery-free remote control, characterized in that: the end of the housing is equipped with a guard plate through screws, the inside of the front panel of the housing is equipped with a circuit board through screws, and a transmitting module is welded on the circuit board; The piezoelectric film bonded to the metal film and its arc protrusion constitutes a piezoelectric vibrator, and the different piezoelectric films on the piezoelectric vibrator are connected by a wire L1, and the piezoelectric vibrator is connected to the circuit board through a wire group L3; the piezoelectric vibrator and its The pin sleeves riveted at both ends constitute the transducer. The pin sleeves at both ends of the transducer are respectively set on the fixed pin and the movable pin. Placed in the longitudinal guide grooves at the lower ends of the left and right side walls of the housing; the guide grooves on the two side walls of the square cavity on the inclined arm of the curved plate are sleeved on the movable pin, and the protruding shafts on both sides of the vertical arm of the curved plate are respectively placed on the left and right sides of the housing In the pin hole at the lower end of the wall, the button is installed on the flat arm of the curved plate, and the flat arm of the curved plate is provided with a wire hole, and the wire group L2 connecting the button and the circuit board passes through the wire hole; the flat arm of the curved plate passes through the lower end of the front panel of the housing The window protrudes, and the button is placed outside the shell; In the natural state of the piezoelectric vibrator without external force, the minimum radius of the outer surface of the arc of the metal film is Where α=h _m /(h _m +h _p ), h _p and h _m are the thicknesses of the piezoelectric film and the metal film respectively, β=E _m /E _p , E _p and E _m are the Young's modulus of the piezoelectric film and the metal film respectively, k ₃₁ and T _p are the transverse electromechanical coupling coefficient and the allowable tensile stress of the piezoelectric material respectively; When the upper surface of the flat arm is in contact with the upper frame of the shell window, the center distance between the fixed pin and the movable pin of the pin sleeves at both ends of the transducer should be greater than or equal to the center of the pin sleeves at both ends of the transducer in the natural state. distance.