CN218330208U

CN218330208U - Self-generating electronic scale

Info

Publication number: CN218330208U
Application number: CN202221993601.3U
Authority: CN
Inventors: 朱惠忠
Original assignee: Shenzhen Wenzhi Technology Co ltd
Current assignee: Shenzhen Wenzhi Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2023-01-17
Anticipated expiration: 2032-07-28

Abstract

The utility model provides a from electricity generation electronic scale, include: the scale comprises a scale body, and a pressure lever, a rotating shaft, a bearing, a return spring, a sector gear, a speed-increasing gear set and a micro generator which are all arranged in the scale body; the rotating shaft is supported by at least one bearing to realize fixed-shaft rotation, and the bearing is fixed on the scale body; the two ends of the compression bar are respectively connected with the two ends of the rotating shaft so as to be rotatably connected to the scale body; the sector gear is fixed on the rotating shaft, the reset spring is sleeved on the rotating shaft, the first end of the reset spring is fixedly connected with the sector gear, and the second end of the reset spring is fixedly connected with the scale body; the sector gear is meshed with the input end of the speed increasing gear set, and the output end of the speed increasing gear set is connected with the micro generator. The utility model has the advantages of ensuring the integrity of the scale surface of the scale body.

Description

Self-generating electronic scale

Technical Field

The utility model relates to an electronic scale especially relates to a from electricity generation electronic scale.

Background

The self-generating electronic scale is driven by the action of hands or feet of a user by a small generator to generate electric power, and the electric power required by the weighing sensor and the circuit is supplied to the electronic scale. The self-generating balance does not need to be provided with a battery, so that the environmental pollution and the waste battery treatment burden caused by a large amount of waste batteries generated in the long-term use process of an electronic product powered by the battery can be reduced, and the embarrassment that the product cannot work due to the fact that the electric quantity of the battery is consumed up when the electronic product is occasionally used can be avoided for a user.

The self-generating scale is widely applied to household electronic scales (such as a weighing scale, a kitchen scale and the like), the conventional self-generating weighing scale adopts a press-button type driving device, a button is arranged in the middle of a scale surface and is stepped by feet, a rack attached to the driving button moves downwards to drive a subsequent gear set to rotate in an accelerating way and then drive a small generator to generate electricity, the driving button moves in a return way by the restoring force of a compression spring inside to drive the rack to move upwards, the subsequent gear set is driven to rotate in an accelerating way and drive the small generator to generate electricity, the rotating directions of gears on rotor shafts of a go-way small generator and a return-way small generator are opposite, the polarities of generated electricity are also opposite, and the electricity generated in the two processes is modulated into unidirectional direct current through a rectifying circuit and is stored in an energy storage element to be used by a measuring circuit. In this way, the pedal button needs to be arranged on the scale surface through a window, and the integrity of the scale surface is damaged.

SUMMERY OF THE UTILITY MODEL

In order to compensate the not enough of above-mentioned prior art, the utility model provides a from electricity generation electronic scale, it has the advantage of guaranteeing balance face integrality.

The technical problem of the utility model is solved through following technical scheme:

a self-generating electronic scale comprises a scale body, a pressure lever, a rotating shaft, a bearing, a reset spring, a sector gear, a speed-increasing gear set and a micro generator; the rotating shaft, the bearing, the reset spring, the sector gear, the speed-increasing gear set and the micro generator are all arranged in the scale body; the rotating shaft is supported by at least one bearing to realize fixed-shaft rotation, and the bearing is fixed on the scale body; the two ends of the compression bar are respectively connected with the two ends of the rotating shaft so as to be rotatably connected to the scale body; the sector gear is fixed on the rotating shaft, the return spring is sleeved on the rotating shaft, the first end of the return spring is fixedly connected with the sector gear, and the second end of the return spring is fixedly connected with the scale body; the sector gear is meshed with the input end of the speed-increasing gear set, and the output end of the speed-increasing gear set is connected with the micro generator.

Preferably, the balance body includes scale face, drain pan and weighing sensor subassembly, the scale face is connected with the drain pan, the scale face with form between the drain pan and hold the pivot the bearing reset spring sector gear speed increasing gear group and micro generator's inner space, weighing sensor subassembly is connected the bottom surface of drain pan, the both ends of depression bar are rotationally connected relative both sides on the drain pan, the bearing is fixed on the drain pan, reset spring's second end with drain pan fixed connection.

Preferably, the scale surface is rectangular, two ends of the pressure lever are rotatably connected to the left side and the right side of the bottom shell and close to the front side of the bottom shell, and when the pressure lever is not stressed, the top surface of the pressure lever is flush with the top surface of the scale surface.

Preferably, the compression bar comprises a bar body part and a stressed part which are integrally formed, the stressed part is located in the middle of the bar body part, and the stressed part extends towards the front side far away from the bottom shell relative to the bar body part.

Preferably, the weighing sensor assembly comprises a weighing sensor and supporting legs, the weighing sensor and the supporting legs are respectively connected in a one-to-one correspondence manner, and the weighing sensor assembly is distributed at four corners of the bottom surface of the bottom case.

Preferably, the scale body further comprises a display screen, the display screen is arranged on the scale surface, and the micro generator is used for supplying power to the display screen.

Preferably, the speed increasing gear set comprises three parallel gear shafts and a duplicate gear on each gear shaft to form a three-stage speed increasing mechanism; the small gear of the duplicate gear in the first-stage speed increasing mechanism is used as an input end and meshed with the sector gear, the large gear of the duplicate gear in the first-stage speed increasing mechanism is meshed with the small gear of the duplicate gear in the second-stage speed increasing mechanism, the large gear of the duplicate gear in the second-stage speed increasing mechanism is meshed with the small gear of the duplicate gear in the third-stage speed increasing mechanism, and the large gear of the duplicate gear in the third-stage speed increasing mechanism is used as an output end and meshed with the gear on the rotor shaft of the micro-generator.

Preferably, the bearing is a sliding bearing, the sliding bearing is formed by matching a bearing cover with a corresponding position on a bottom shell, where the bearing cover is fixed, and the rotating shaft can rotate in a fixed shaft manner under the limitation of the sliding bearing.

Preferably, the bearing is a rolling bearing, an inner ring of the rolling bearing is fixed with the rotating shaft, and an outer ring of the rolling bearing is fixed on the bottom shell through a gland.

The beneficial effects of the utility model include: the utility model discloses a set up the depression bar at the external components of a whole that can function independently ground of balance, the depression bar is rotationally connected on the balance body, and the depression bar can reset after the power disappears for the balance body downstream after the atress, and the during operation can drive the pivot dead axle and rotate through pushing down the depression bar, and then drives sector gear and rotate, and sector gear's rotation will drive the step-up gear group rotation, and then drives miniature microgenerator and generate electricity. The utility model discloses need not to set up the window on the scale face of the scale body and set up and trample the button, have the advantage that can guarantee the integrality of the scale face of the scale body.

Drawings

FIG. 1 is a schematic diagram of an electronic power generating scale according to an embodiment of the present invention;

FIG. 2 is a schematic view of an electronic balance with a scale surface removed according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of FIG. 2 at the dashed circle;

FIG. 4 is a diagram illustrating an embodiment of the present invention in which a power generating electronic scale is pressed down by a force;

FIG. 5 is a schematic diagram of the power generating electronic scale pressed by force in the embodiment of the present invention.

Detailed Description

The invention will be further described with reference to the accompanying drawings and preferred embodiments. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.

It should be noted that the terms of orientation such as left, right, up, down, top and bottom in the present embodiment are only relative concepts to each other or are referred to the normal use state of the product, and should not be considered as limiting.

As shown in fig. 1-5, a self-generating electronic scale includes a scale body, a pressure lever 2, a rotating shaft 4, a bearing 31, a return spring 6, a sector gear 5, a speed-increasing gear set 7 and a micro-generator 8, wherein the rotating shaft 4, the bearing 31, the return spring 6, the sector gear 5, the speed-increasing gear set 7 and the micro-generator 8 are all arranged in the scale body; the rotating shaft 4 is supported by at least one bearing 31 to realize the rotation of the fixed shaft, the bearing 31 is fixed on the scale body, and the compression bar 2 is rotatably connected on the scale body through the connection of the two ends of the compression bar with the two ends of the rotating shaft 4 respectively; the sector gear 5 is fixed on the rotating shaft 4, the return spring 6 is sleeved on the rotating shaft 4, a first end of the return spring 6 is fixedly connected with the sector gear 5 (for example, the first end of the return spring 6 is fixed on the sector gear 5 in a clamping manner), and a second end of the return spring 6 is fixedly connected with the scale body (for example, fixed in a clamping manner); the sector gear 5 is meshed with the input end of the speed increasing gear set 7, and the output end of the speed increasing gear set 7 is connected with the micro generator 8.

As preferred embodiment, the balance body includes the balance face 1, drain pan 3 and weighing sensor subassembly 9, balance face 1 is connected with drain pan 3, form between balance face 1 and the drain pan 3 and hold pivot 4, bearing 31, reset spring 6, sector gear 5, acceleration gear 7 and microgenerator 8's inner space, weighing sensor subassembly 9 is connected in the bottom surface of drain pan 3, the relative both sides on drain pan 3 are rotationally connected at the both ends of depression bar 2, bearing 31 is fixed on drain pan 3, reset spring 6's second end and drain pan 3 fixed connection.

Referring to fig. 4 and 5, arrows in the drawings indicate a force-bearing direction, two ends of a pressure lever 2 are rotatably connected to a scale body, the pressure lever 2 can move downward relative to the scale body after being stressed and reset after the force disappears, in operation, the pressure lever 2 is pressed down to drive a rotating shaft 4 to rotate in a fixed axis manner, and further drive a sector gear 5 to rotate (swing), and the rotation of the sector gear 5 drives a speed-increasing gear set 7 to rotate, and further drives a micro-generator 8 to generate electricity. More specifically, when the pressing rod 2 is driven by external force to rotate around the shaft, the sector gear 5 is driven to rotate around the shaft against the resistance of the return spring 6, the first end of the return spring 6 is driven to generate torsional deformation, elastic potential energy is accumulated, after the external force is removed, the elastic potential energy accumulated in the return spring 6 is released, the sector gear 5 is driven to rotate reversely to the initial position, and the process can also drive the micro-generator 8 to generate electricity. Through the low-power consumption measuring circuit of conventional rational design to and sector gear 5 and the mechanism motion parameter of acceleration gear train 7 (for example predetermine sector gear 5's swing angle and be enough to drive gear and rotate the required number of teeth with final drive microgenerator 8 and rotate sufficient number of turns and produce sufficient electric energy and satisfy the work needs of generating electricity from the electronic scale), the rigidity of reset spring 6 is twistd reverse in the rational design, make the work that the effort that once manpower pushed down was done, can drive microgenerator 8 electricity generation once of reciprocating rotation smoothly, produce sufficient electric quantity and satisfy the required electric quantity of at least once measurement, guarantee the normal operating requirement of system.

In a preferred embodiment, the scale surface 1 is rectangular (for example, it may be rectangular with four rounded corners), two ends of the pressing rod 2 are rotatably connected to the left and right sides of the bottom case 3 and close to the front side of the bottom case 3, and the top surface of the pressing rod 2 is flush with the top surface of the scale surface 1 when the pressing rod is not under stress.

The scale surface is used for bearing a heavy object and can be a glass flat plate or a rigid flat plate made of other materials.

As a preferred embodiment, the plunger 2 includes a body portion 21 and a force receiving portion 22, the force receiving portion 22 is located at the middle of the body portion 21, and the force receiving portion 22 extends toward the front side away from the bottom case 3 with respect to the body portion 21. When the whole pressure lever 2 moves downwards due to the fact that force is pressed on the force-bearing portion 22 of the pressure lever 2, the pressure lever 2 drives the rotating shaft 4 to rotate in a fixed shaft mode, and further drives the sector gear 5 to rotate in a fixed shaft mode, and therefore the micro-generator 8 is driven to generate electricity.

As a preferred embodiment, the load cell assembly 9 includes four load cells and supporting legs, the four load cells and the supporting legs are respectively and correspondingly connected one by one, and the load cell assembly 9 is distributed at four corners of the bottom surface of the bottom case 3. When the weighing device works, the supporting legs fall on platforms such as the ground, the load acts on the four weighing sensor assemblies 9 through the scale body, and the subsequent circuit calculates the weight according to the signal changes of the four weighing sensors.

In a preferred embodiment, the scale body further comprises a display screen 10, the display screen 10 is arranged on the scale surface 1, the micro generator 8 is also used for supplying power to the display screen 10, and the display screen is used for displaying information such as weight obtained by weighing with the self-generating electronic scale.

As a preferred embodiment, as shown in fig. 3, the speed-increasing gear set 7 includes three parallel gear shafts and a duplicate gear on each gear shaft, constituting a three-stage speed-increasing mechanism; the pinion of the duplicate gear in the first-stage speed increasing mechanism 71 is used as an input end to be meshed with the sector gear 5, the bull gear of the duplicate gear in the first-stage speed increasing mechanism 71 is meshed with the pinion of the duplicate gear in the second-stage speed increasing mechanism 72, the bull gear of the duplicate gear in the second-stage speed increasing mechanism 72 is meshed with the pinion of the duplicate gear in the third-stage speed increasing mechanism 73, and the bull gear of the duplicate gear in the third-stage speed increasing mechanism 73 is used as an output end to be meshed with a gear 81 on a rotor shaft of the micro-generator 8. A duplicate gear on each gear shaft rotates synchronously, the rotating angles are the same, the coaxial pinion drives the large gear to rotate by the same angle, the large gear on the front-stage shaft is meshed with the pinion on the rear-stage shaft to drive the rear-stage pinion to rotate by the same number of teeth (the rotating directions are opposite), and the transmission ratio is equal to the diameter ratio of the two meshed gears.

In a preferred embodiment, the bearing 31 is a sliding bearing, and the rotating shaft 34 slides relative to the sliding bearing to realize fixed-axis rotation. The sliding bearing is formed by a bearing gland (not shown) and a corresponding position on the bottom shell 3 where the bearing gland is fixed (namely, the bearing gland is a semicircular ring structure of the sliding bearing, the corresponding position on the shell where the bearing gland is fixed is another semicircular ring structure of the sliding bearing, and the two semicircular ring structures are connected together in a matching manner to form the complete sliding bearing in this example), and the rotating shaft 4 can rotate in a fixed shaft manner under the restriction of the sliding bearing. In the case that the bearing 31 is a sliding bearing, if the lubrication condition is not good, there is a significant rotational friction resistance, and in practical application, the potential energy of the return spring 6 is offset, so that the spring return acting capability is reduced, therefore, it is more preferable that the bearing 31 is a rolling bearing, the inner ring of the rolling bearing is fixed to the rotating shaft 4, the outer ring of the rolling bearing is fixed to the bottom case 3 through a gland, the rotational resistance of the rolling bearing is small, friction consumption can be reduced to the maximum extent, and it is ensured that the up-and-down swing of the pressure lever 2 and the sector gear 5 is easier and more reliable.

The bearings fixed on the bottom shell 3 for supporting the rotating shaft 4 may be one, two or more, so as to realize the fixed-axis rotation of the rotating shaft, and as a preferred embodiment, the two ends of the rotating shaft 4 are respectively supported by a bearing 31, and the bearing 31 may be the above-mentioned sliding bearing or rolling bearing.

Through the utility model discloses a from electricity generation electronic scale is guaranteeing to provide under the prerequisite of the generated energy that normal work needs, need not to punch on the balance face and installs and trample the button, can not destroy the balance face, has the advantage that can guarantee the integrality of the balance face of the balance body.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the technical field of the utility model belongs to the prerequisite of not deviating from the utility model discloses, can also make a plurality of equal substitution or obvious variants, performance or usage are the same moreover, all should regard as belonging to the utility model's scope of protection.

Claims

1. A self-generating electronic scale is characterized by comprising: the scale comprises a scale body, a pressure lever, a rotating shaft, a bearing, a reset spring, a sector gear, a speed-up gear set and a micro generator;

the rotating shaft, the bearing, the reset spring, the sector gear, the speed-increasing gear set and the micro generator are all arranged in the scale body;

the rotating shaft is supported by at least one bearing to realize fixed-shaft rotation, and the bearing is fixed on the scale body;

the two ends of the pressure lever are respectively connected with the two ends of the rotating shaft so as to be rotatably connected to the scale body;

the sector gear is fixed on the rotating shaft, the return spring is sleeved on the rotating shaft, the first end of the return spring is fixedly connected with the sector gear, and the second end of the return spring is fixedly connected with the scale body;

the sector gear is meshed with the input end of the speed increasing gear set, and the output end of the speed increasing gear set is connected with the micro generator.

2. The self-generating electronic scale according to claim 1, characterized in that: the balance body includes scale face, drain pan and weighing sensor subassembly, the scale face is connected with the drain pan, the scale face with form between the drain pan and hold the pivot the bearing reset spring sector gear speed-up gear group and microgenerator's inner space, weighing sensor subassembly is connected the bottom surface of drain pan, the both ends of depression bar are rotationally connected relative both sides on the drain pan, the bearing is fixed on the drain pan, reset spring's second end with drain pan fixed connection.

3. The self-generating electronic scale according to claim 2, characterized in that: the scale surface is rectangular, two ends of the pressure lever are rotatably connected to the left side and the right side of the bottom shell and close to the front side of the bottom shell, and the top surface of the pressure lever is flush with the top surface of the scale surface when the pressure lever is not stressed.

4. The self-generating electronic scale according to claim 3, characterized in that: the pressure lever comprises a lever body part and a stress part which are integrally formed, the stress part is positioned in the middle of the lever body part, and the stress part extends towards the front side far away from the bottom shell relative to the lever body part.

5. The self-generating electronic scale according to claim 2, characterized in that: the weighing sensor assembly comprises a weighing sensor and supporting legs, the weighing sensor and the supporting legs are respectively connected in a one-to-one correspondence mode, and the weighing sensor assembly is distributed at four corners of the bottom surface of the bottom shell.

6. The self-generating electronic scale according to claim 2, characterized in that: the scale body still includes the display screen, the display screen sets up on the scale face, micro generator is used for right the display screen power supply.

7. The self-generating electronic scale according to claim 1, characterized in that: the speed increasing gear set comprises three parallel gear shafts and a duplicate gear on each gear shaft to form a three-stage speed increasing mechanism; the small gear of the duplicate gear in the first-stage speed increasing mechanism is used as an input end and meshed with the sector gear, the large gear of the duplicate gear in the first-stage speed increasing mechanism is meshed with the small gear of the duplicate gear in the second-stage speed increasing mechanism, the large gear of the duplicate gear in the second-stage speed increasing mechanism is meshed with the small gear of the duplicate gear in the third-stage speed increasing mechanism, and the large gear of the duplicate gear in the third-stage speed increasing mechanism is used as an output end and meshed with the gear on the rotor shaft of the micro-generator.

8. The self-generating electronic scale according to claim 2, characterized in that: the bearing is a sliding bearing, the sliding bearing is formed by matching a bearing gland with a corresponding position on a bottom shell, wherein the bearing gland is fixed on the bottom shell, and the rotating shaft can rotate in a fixed shaft mode under the limitation of the sliding bearing.

9. The self-generating electronic scale according to claim 2, characterized in that: the bearing is a rolling bearing, an inner ring of the rolling bearing is fixed with the rotating shaft, and an outer ring of the rolling bearing is fixed on the bottom shell through a gland.