阅读说明：本技术 一种自发电模块及无源无线开关 (Self-generating module and passive wireless switch ) 是由 田赡民 于 2019-09-17 设计创作，主要内容包括：本发明适用于开关技术领域,提供了一种自发电模块及无源无线开关,自发电模块包括：壳体；驱动臂；感应线圈；磁路系统,磁路系统包括同时穿过感应线圈的第一轭铁和第二轭铁、以及驱动感应线圈发电的磁钢；复位弹簧,复位弹簧设于壳体上并与驱动臂间隔设置,或复位弹簧设于驱动臂上并与壳体间隔设置,驱动臂按压时运动预设距离后压缩复位弹簧,且驱动臂在复位弹簧的作用力下复位并通过磁钢与第一轭铁吸附。本发明提供的自发电模块的驱动臂在按压初始状态时不受复位弹簧的阻碍,有效减小了驱动臂起始的操作力,从而使得应用该自发电模块的无源无线开关的按钮按压所需操作力小,提升了用户使用体验。(The invention is suitable for the technical field of switches, and provides a self-generating module and a passive wireless switch, wherein the self-generating module comprises: a housing; a drive arm; an induction coil; the magnetic circuit system comprises a first yoke iron and a second yoke iron which simultaneously penetrate through the induction coil, and magnetic steel for driving the induction coil to generate electricity; reset spring, reset spring locate on the casing and with the actuating arm interval setting, or reset spring locate on the actuating arm and with the casing interval setting, compress reset spring after the predetermined distance of motion when the actuating arm is pressed, and the actuating arm resets under reset spring's effort and adsorbs through magnet steel and first yoke. The driving arm of the self-generating module provided by the invention is not obstructed by the return spring when in an initial state, and the initial operating force of the driving arm is effectively reduced, so that the operating force required by the button of the passive wireless switch applying the self-generating module to be pressed is small, and the use experience of a user is improved.)

1. A self-generating module, comprising:

a housing;

a driving arm movably arranged on the shell;

the induction coil is arranged on the shell;

a magnetic circuit system including first and second yokes fixed to the housing while passing through the induction coil, and magnetic steel fixed to the driving arm and movable between the first and second yokes to drive the induction coil to generate electric power;

the reset spring is arranged on the shell and is arranged at an interval with the driving arm, or the reset spring is arranged on the driving arm and is arranged at an interval with the shell, the driving arm moves for a preset distance when pressed and then compresses the reset spring, and the driving arm resets under the action force of the reset spring and is adsorbed with the first yoke through the magnetic steel.

2. The self-generating module according to claim 1, wherein the magnetic circuit system comprises a first armature and a second armature fixed to the magnetic steel and respectively located at two opposite sides of the magnetic steel, the magnetic steel can be adsorbed to the first yoke by the first armature, and the magnetic steel can be adsorbed to the second yoke by the second armature.

3. The self-generating module according to claim 1, further comprising a bobbin, the induction coil being wound around the bobbin, the first yoke and the second yoke simultaneously passing through the bobbin.

4. The self-generating module according to claim 1, wherein the return spring is disposed on the driving arm and spaced apart from the housing, and the return spring is fixed to the driving arm by the magnetic steel in an adsorbing manner.

5. The self-generating module according to claim 1, wherein the driving arm is provided with a mounting cavity, and the return spring is at least partially received in the mounting cavity.

6. The self-generating module according to claim 1, wherein a positioning column is arranged at the bottom of the housing, and the return spring is sleeved on the positioning column.

7. The self-generating module according to claim 1, wherein the number of the spring coils of the return spring is 2-3.5.

8. The self-generating module according to claim 1, wherein the length of the return spring is 3.5-6 mm.

9. A passive wireless switch comprising a push button and a self-generating module according to any of claims 1-8, the push button being in driving connection with the driving arm of the self-generating module.

Technical Field

The invention relates to the technical field of switches, in particular to a self-generating module and a passive wireless switch.

Background

With the rapid development of modern home, in order to save the tedious steps of switch wiring, passive wireless switches (such as a doorbell button switch and a door opening and closing button switch) are appeared on the market for controlling controlled equipment, electric energy is generated when buttons of the passive wireless switches are pressed, the generated electric energy supplies power to a signal processing device, and the signal processing device transmits wireless signals to the controlled equipment to enable the controlled equipment to execute corresponding actions.

Disclosure of Invention

The invention provides a self-generating module, and aims to solve the problem that in the prior art, due to the fact that the operation force required by the driving arm of the self-generating module when being initially pressed is large, the operation force required by the pressing of a button is large, and the use experience of a user is influenced.

The invention is realized in this way, a self-generating module, comprising:

a housing;

a driving arm movably arranged on the shell;

the induction coil is arranged on the shell;

a magnetic circuit system including first and second yokes fixed to the housing while passing through the induction coil, and magnetic steel fixed to the driving arm and movable between the first and second yokes to drive the induction coil to generate electric power;

the reset spring is arranged on the shell and is arranged at an interval with the driving arm, or the reset spring is arranged on the driving arm and is arranged at an interval with the shell, the driving arm moves for a preset distance when pressed and then compresses the reset spring, and the driving arm resets under the action force of the reset spring and is adsorbed with the first yoke through the magnetic steel.

Preferably, the magnetic circuit system includes a first armature and a second armature fixed to the magnetic steel and respectively located at two opposite sides of the magnetic steel, the magnetic steel may be adsorbed to the first yoke via the first armature, and the magnetic steel may be adsorbed to the second yoke via the second armature.

Preferably, the self-generating module further comprises a coil framework, the induction coil is wound on the coil framework, and the first yoke iron and the second yoke iron penetrate through the coil framework simultaneously.

Preferably, the reset spring is arranged on the driving arm and arranged at an interval with the shell, and the reset spring is fixed on the driving arm through the magnetic steel in an adsorption manner.

Preferably, the driving arm is provided with a mounting cavity, and the return spring is at least partially accommodated in the mounting cavity.

Preferably, the bottom of the shell is provided with a positioning column, and the return spring is sleeved on the positioning column.

Preferably, the number of the spring coils of the return spring is 2-3.5.

Preferably, the length of the return spring is 3.5-6 mm.

The invention also provides a passive wireless switch which comprises a button and the self-generating module, wherein the button is in driving connection with the driving arm of the self-generating module.

According to the self-generating module provided by the invention, the reset spring is arranged on the shell and is arranged at an interval with the driving arm or the reset spring is arranged on the driving arm and is arranged at an interval with the shell, namely, the length of the reset spring in a free state is reduced, so that the driving arm is not influenced by the elasticity of the reset spring when in an initial state, the reset spring is compressed after the driving arm moves a preset distance when in pressing, the driving arm is not hindered by the reset spring when in the initial state, the initial operating force of the driving arm is effectively reduced, the operating force required by the pressing of the button of the passive wireless switch applying the self-generating module is small, and the use experience of a user is improved.

Drawings

FIG. 1 is a schematic structural diagram of a self-generating module according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another self-generating module according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a self-generating module according to an embodiment of the present invention when a driving arm is pressed.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

According to the self-generating module provided by the embodiment of the invention, the reset spring is arranged on the shell and is arranged at an interval with the driving arm or the reset spring is arranged on the driving arm and is arranged at an interval with the shell, so that the driving arm is not influenced by the elasticity of the reset spring when in an initial state of pressing by reducing the length of the reset spring in a free state, the reset spring is compressed after the driving arm moves for a preset distance when in pressing, the driving arm is not hindered by the reset spring when in the initial state of pressing, the initial operating force of the driving arm is effectively reduced, the operating force required by the pressing of the button of the passive wireless switch applying the self-generating module is small, and the use experience of a user is improved.

Referring to fig. 1 to 3, a self-generating module provided in an embodiment of the present invention includes: a housing 1; a driving arm 2 movably arranged on the shell 1; an induction coil 6 provided in the housing 1; a magnetic circuit system including a first yoke 41 and a second yoke 42 fixed to the housing 1 while passing through the induction coil 6, and a magnetic steel 43 fixed to the driving arm 2 and movable between the first yoke 41 and the second yoke 42 to drive the induction coil 6 to generate electricity; the reset spring 3 is arranged on the shell 1 and is arranged at intervals with the driving arm 2, or the reset spring 3 is arranged on the driving arm 2 and is arranged at intervals with the shell 1; when the driving arm 2 is pressed, the driving arm moves for a preset distance and then compresses the return spring 3, and the driving arm 2 is reset under the acting force of the return spring 3 and is adsorbed to the first yoke 41 through the magnetic steel 43.

According to the self-generating module in the embodiment of the invention, the return spring 3 is arranged on the shell 1 and is arranged at an interval with the driving arm 2, or the return spring 3 is arranged on the driving arm 2 and is arranged at an interval with the shell 1, so that the length of the return spring 3 in a free state is reduced, the driving arm 2 is not subjected to the elasticity of the return spring 3 when in an initial pressing state, the initial operating force of the driving arm 3 when in pressing is effectively reduced, and the use experience of a user is improved.

As one embodiment of the present invention, the housing 1 includes a base 11 and a cover plate 12 covering the base 11. The driving arm 2 is movably mounted on the base 11 and has one end extending out relative to the base 11.

As shown in fig. 1, as an embodiment of the present invention, a return spring 3 is provided on a drive arm 2 and spaced apart from a housing 1. Specifically, the return spring 3 is fixed to the driving arm 2 and can move synchronously with the driving arm 2. When the driving arm 2 is not pressed down, the return spring 3 is arranged at an interval with the base 11, and a distance L0 is arranged between the return spring 3 and the base 11, so that the driving arm 2 is not subjected to the elastic force of the return spring 3 when not pressed down.

As shown in fig. 3, in this embodiment, when the driving arm 2 is in the initial state of pressing, the driving arm 2 and the return spring 3 move synchronously, and the driving arm 2 is not subject to the elastic force of the return spring 3 when in the initial state of pressing, so that the initial operating force of the driving arm 2 when pressing is effectively reduced, and the user experience is improved. After the driving arm 2 moves for an idle stroke with a length of L0, the driving arm 2 drives the return spring 3 to contact the base 11, and at this time, the driving arm 2 starts to compress the return spring 3 until the driving arm 2 is pressed in place. When the hand is released, the reset spring 3 drives the driving arm 2 to move reversely under the action of the reset spring 3 so as to reset, and the interval between the reset spring 3 and the base 11 is maintained again.

As shown in fig. 2, as another embodiment of the present invention, a return spring 3 is provided on the housing 1 and spaced apart from the driving arm 2. Specifically, when the drive arm 2 is not pressed, the return spring 3 is fixed to the base 11 and spaced from the drive arm 2, so that a distance L0 is provided between the return spring 3 and the drive arm 2, and the drive arm 2 is not subjected to the elastic force of the return spring 3 when not pressed.

In this embodiment, since the return spring 3 is provided at an interval from the driving arm 2 in advance, an idle stroke having a length of L0 is provided between the return spring 3 and the base 11. When the driving arm 2 is pressed, the driving arm 2 contacts with the top of the return spring 3 after the idle stroke with the movement height of L0, and at this time, the driving arm 2 starts to compress the return spring 3, so the driving arm 2 is not subjected to the elastic force of the return spring 3 at the initial pressing time, the initial operating force of the driving arm 2 is effectively reduced, until the driving arm 2 is pressed in place and looses hands, the return spring 3 drives the driving arm 2 to move reversely under the acting force of the return spring 3 to reset, and the return spring 3 keeps an interval with the driving arm 2 again.

In the embodiment of the present invention, the driving arm 2 is reset under the action of the reset spring 3 and is adsorbed to the first yoke 41 through the magnetic steel 43, so as to ensure that the driving arm 2 returns to the initial position. Wherein, the first yoke 41 is fixed to the cover plate 12, and the second yoke 42 is fixed to the base 111, which facilitates the assembly of the first yoke 41 and the second yoke 42.

Wherein, the magnetic pole distribution mode of the magnetic steel 43 is not limited. In this embodiment, one end of the magnetic steel 43 close to the first yoke 41 is an N pole, and one end of the magnetic steel 43 close to the second yoke 42 is an S pole. When the driving arm 2 is reset under the acting force of the reset spring 3, and the reset spring 3 is restored to the natural length, the driving arm 2 is adsorbed to the first yoke 41 by the magnetic steel 43, so that the driving arm 2 is adsorbed to the first yoke 41 through the magnetic steel 43, the driving arm 2 is ensured to be reset in place, and meanwhile, the driving arm 2 has no pre-pressure on the reset spring 3, so that the interval between the reset spring 3 and the driving arm 2 is maintained again or the interval between the reset spring 3 and the base 11 is maintained again, and the next pressing operation of the driving arm 2 is facilitated.

In the embodiment of the invention, when the driving arm 2 is in the initial pressing state, the driving arm 2 is not subjected to the elastic force of the return spring 3, and the driving arm 2 only needs to overcome the adsorption force of the magnetic steel 43 and the first yoke 41, so that the initial operating force of the driving arm 2 is effectively reduced, and the use experience of a user is improved. The driving arm 2 starts to compress the return spring 3 after moving a preset distance, which is a distance L0 between the return spring 3 and the base 11 in fig. 1 or a distance L0 between the return spring 3 and the driving arm 2 in fig. 2, wherein the distance L0 can be set according to actual needs.

In the embodiment of the invention, in the process of compressing the reset spring 3 by the driving arm 2, the elastic force and the compression stroke of the reset spring 3 accord with Hooke's law, because the pressure when the driving arm 2 starts to compress the reset spring 3 is very small, the reset spring 3 basically does not obstruct the movement of the driving arm 2, and the adsorption force between the magnetic steel 43 and the first yoke 41 is rapidly reduced along with the increase of the suction force in the gap B between the magnetic steel 43 and the first yoke 41, so that the obstruction effect of the adsorption force between the magnetic steel 43 and the first yoke 41 on the driving arm 2 is rapidly reduced, and the required operating force of the driving arm 2 is; after the driving arm 2 drives the magnetic steel 43 to cross the vicinity of the middle point between the first yoke 41 and the second yoke 42, the driving arm 2 receives the elastic force of the return spring 3, and the adsorption force of the magnetic steel 43 and the second yoke 42 is greater than the adsorption force of the magnetic steel 43 and the first yoke 41, and the adsorption force of the magnetic steel 43 and the second yoke 42 serves as the driving force for the movement of the driving arm 2, so that the operating force of the driving arm 2 is further reduced.

As an embodiment of the present invention, when the return spring 3 is provided on the driving arm 2 and spaced apart from the housing 1, the return spring 3 is fixed to the driving arm 2 by being attracted by the magnetic steel 43. Make full use of magnet steel 43 and 3 absorbent characteristics mutually of reset spring, be fixed in reset spring 3 on actuating arm 2, realize a multi-purpose function, and be convenient for reset spring 3's installation. In addition, the return spring 3 may be fixed to the drive arm 2 by other fixing means, such as gluing.

As an embodiment of the invention, the driving arm 2 is provided with a mounting cavity 21, and the return spring 3 is at least partially accommodated in the mounting cavity 21. The actuating arm 2 cooperates with reset spring 3 through installation cavity 21, has reduced reset spring 3's occupation space, and installation cavity 21 plays limiting displacement to reset spring 3 simultaneously, prevents reset spring 3 bending deformation.

As an embodiment of the present invention, a positioning post 111 is disposed at the bottom of the housing 1, and the return spring 3 is sleeved on the positioning post 111. Specifically, the positioning column 111 is disposed on the base 11. By providing the positioning column 111, the positioning column 111 serves to position the return spring 3, and further prevents the return spring 3 from bending and deforming when the driving arm 2 is compressed.

As an embodiment of the present invention, the magnetic circuit system includes a first armature 44 and a second armature 45 fixed to the magnetic steel 43 and respectively located on two opposite sides of the magnetic steel 43, the magnetic steel 43 can be adsorbed to the first yoke 41 by the first armature 44, and the magnetic steel 43 can be adsorbed to the second yoke 42 by the second armature 45.

In this embodiment, when the driving arm 2 is not pressed down, the magnetic steel 43 is adsorbed to the first yoke 41 through the first armature 44, so that the driving arm 2 has no pressure on the return spring 3; when the drive arm 2 is pressed down, the first armature 44 is separated from the first yoke 41, and when the drive arm 2 is pressed in place, the magnetic steel 43 is attracted to the second yoke 42 by the second armature 45.

As an embodiment of the present invention, the self-generating module further includes a bobbin 5, the induction coil 6 is wound on the bobbin 5, and the first yoke 41 and the second yoke 42 simultaneously penetrate through the bobbin 5. When the driving arm 2 is pressed, the driving arm 2 rotates and drives the magnetic steel 43 to move so as to change the magnetic flux passing through the induction coil 6, the induction coil 6 generates electric energy, the electric energy generated by the induction coil 6 is supplied to a signal processing device electrically connected with the induction coil 6, and the signal processing device transmits a wireless signal to the controlled equipment so that the controlled equipment executes corresponding action.

Specifically, when the driving force P is applied to the driving arm 2, the magnetic steel 43, the first armature 44, and the second armature 45 move along with the rotation of the driving arm 2. When the driving arm 2 is not pressed down, the first armature 44 is adsorbed to the first yoke 41, and the magnetic induction line of the magnetic steel 43 sequentially passes through the first armature 44, the first yoke 41, the second yoke 42 and the second armature 45 to form a magnetic loop, and in this state, the magnetic line of force in the induction coil 6 is from right to left; under the action of a driving force P, the driving arm 2 swings downwards to an end point state, the second armature 45 and the second yoke 42 are adsorbed, magnetic lines of force of the magnetic steel 43 sequentially pass through the first armature 44, the first yoke 41, the second yoke 42 and the second armature 45 to form a magnetic loop, in the state, the magnetic lines of force in the induction coil 6 are from left to right, the two states pass through the magnetic field in the induction coil 6 with equal magnitude and opposite directions, induced electromotive force and induced current can be generated in the induction coil 6, electric energy generated by the induction coil 6 is supplied to a signal processing device electrically connected with the induction coil 6, and the signal processing device transmits a wireless signal to a controlled device to enable the controlled device to perform corresponding actions (such as controlling a doorbell, a lamp or other loads to work). After the hand is released, the driving arm 2 returns to the initial state under the restoring force of the return spring 3, and the driving arm 2 is adsorbed to the first yoke 41 through the magnetic steel 43. Similarly, the driving arm 2 can generate an induced electromotive force and a current in the induction coil 6, which are equal to and opposite to those generated last time, during the reset process.

In the embodiment of the invention, in order to ensure the reliable resetting of the driving arm 2, the driving arm 2 is ensured to reset to the initial position under the action of the reset spring 3 by adjusting the free state gap of the reset spring 3 and the spring stiffness of the reset spring 3.

Preferably, the number of the spring coils of the return spring 3 is 2-3.5, so that the return force of the return spring 3 can drive the driving arm 2 to return to the position. Through reducing reset spring 3's the spring number of turns in order to increase spring rate, can guarantee that the operating force that actuating arm 2 pressed when the terminal point is far less than initial operating force, initial operating force is whole journey the biggest, because actuating arm 2 does not receive reset spring 3's elasticity when pressing initial condition, consequently reset spring 3's the increase of elasticity does not influence actuating arm 2's initial operating force, can guarantee the reset force that actuating arm 2 resets again, makes actuating arm 2 reliably reset.

As an embodiment of the invention, the length of the return spring 3 is 3.5-6 mm. The free length of the return spring 3 is effectively reduced, the driving arm 2 is ensured to have enough idle stroke, the initial operating force of the driving arm 2 is reduced, the space is saved, and the spring cost is reduced.

The invention also provides a self-generating button switch, which comprises the self-generating module and a button, wherein the button (not shown) is in driving connection with the driving arm 2 of the self-generating module. The connection between the button and the driving arm 2 is not limited as long as the driving arm 2 can be driven to move. According to the self-generating button switch, due to the fact that the self-generating module is arranged, the driving arm 2 of the self-generating module is not subjected to the elastic force of the return spring 3 when the driving arm is pressed initially, the initial operating force of the driving arm 2 is effectively reduced, and therefore the operating force required by button pressing is small, and the self-generating button switch is convenient for users to use.

According to the self-generating module provided by the embodiment of the invention, the reset spring is arranged on the shell and is arranged at an interval with the driving arm or the reset spring is arranged on the driving arm and is arranged at an interval with the shell, namely, the length of the reset spring in a free state is reduced, so that the driving arm is not influenced by the elasticity of the reset spring when in an initial state of pressing, the reset spring is compressed after the driving arm moves for a preset distance when in pressing, the driving arm is not hindered by the reset spring when in the initial state of pressing, the initial operating force of the driving arm is effectively reduced, the operating force required by pressing the button of the passive wireless switch applying the self-generating module is small, and the use experience of a user is improved.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.