A reciprocating vibration energy harvesting device and its use

Abstract

The application discloses a reciprocating vibration energy capturing device and application thereof, wherein the reciprocating vibration energy capturing device comprises a fixed base, a movable base, a mechanical transmission assembly and a direct current motor, wherein the fixed base is used for fixing the movable base, the mechanical transmission assembly and the direct current motor; the movable base is used for reciprocating along a guide rail fixed on the fixed base under the action of an external force and a spring group; the mechanical transmission assembly is used for converting the reciprocating vibration of the movable base into a same direction rotation; and the direct current motor is used for generating direct current under the action of the same direction rotation. The device can work in the whole cycle during the human walking process, and one-way rotation of the motor is realized through mechanical design, high efficient electric energy output is realized through the combination of the mechanical structure and the motor, and the existing demand is met.

Description

Technical Field

[0001] This invention relates to the field of energy harvesting technology, and in particular to a complex vibration energy harvesting device and its application. Background Technology

[0002] With the rapid development of artificial intelligence and micro-manufacturing processes, various small wearable and portable electronic devices have been widely used in smart healthcare, military missions, and daily life, and their power supply needs are gradually becoming more convenient and sustainable. Currently, these devices mainly rely on battery power, but batteries bring practical problems such as frequent charging and discharging and waste disposal. Sustainable energy sources such as solar energy also depend on the environment.

[0003] Periodic or non-periodic mechanical vibrations and relative reciprocating motions between components are widespread in industrial production, transportation, and human activities. Examples include vehicles passing over roads and the loading and unloading of the feet during walking, running, or trampling. These reciprocating motions are repeatable and usable, making them an important source of environmental mechanical energy.

[0004] Human movement (walking, running, or stamping) and other periodic reciprocating motions contain abundant mechanical energy, presenting a more stable and repeatable energy input, making them more suitable for energy capture. Therefore, extracting energy from such reciprocating motions to support the operation of low-power electronic systems has become an important research direction.

[0005] Some existing reciprocating energy harvesting structures use an external force loading and spring reset working mode. The loading stroke is used to drive power generation, while the recovery stroke after unloading is mainly used for structural reset. The released mechanical energy is difficult to be effectively utilized, resulting in energy waste in part of the stroke and time.

[0006] Therefore, it is necessary to ensure that both the loading and unloading / resetting processes participate in energy conversion to achieve effective energy capture within the complete reciprocating cycle. Summary of the Invention

[0007] In order to solve the problems existing in the prior art, one object of the present invention is to provide a reciprocating vibration energy capture device for capturing the energy of the entire reciprocating vibration process; another object of the present invention is to provide an application of the reciprocating vibration energy capture device.

[0008] Therefore, the present invention adopts the following technical solution:

[0009] A reciprocating vibration energy harvesting device includes a fixed base, a movable base, a mechanical transmission assembly, and a DC motor, wherein:

[0010] The fixed base is used to fix the moving base, the mechanical transmission assembly and the DC motor;

[0011] The moving base is used to reciprocate along the guide rail fixed on the fixed base under the action of external force and spring assembly;

[0012] The mechanical transmission assembly is used to convert the reciprocating vibration of the moving base into rotational motion in the same direction.

[0013] The DC motor is used to generate DC electricity under the action of rotational motion in the same direction.

[0014] The fixed base includes a base, a back plate, side plates, a top plate, a mounting plate, a fixing plate, and a motor mounting base, wherein:

[0015] The base is horizontally arranged and is a box with an internal cavity. Multiple round holes and one square hole are opened on the top surface of the base.

[0016] The back plate and side plate are respectively vertically installed at the rear and one side of the base, and the back plate and side plate are vertically connected.

[0017] The top plate is horizontally installed on top of the back plate and side plate, and the width of the base is greater than that of the top plate;

[0018] The mounting plate is vertically mounted on the front end face of the top plate and parallel to the back plate;

[0019] The upper part of the fixing plate is fixedly mounted on the mounting plate;

[0020] The motor mounting bracket is horizontally installed in the middle of the side plate on the side away from the base.

[0021] The movable base consists of a base plate and a vertical plate that are perpendicular to each other, and the cross-section of the movable base is inverted T-shaped;

[0022] Multiple positioning protrusions are formed on the bottom of the base plate, and the position and number of the positioning protrusions correspond to the position and number of the circular holes on the base.

[0023] A square hole is formed on the base plate, corresponding to the position of the square hole on the base;

[0024] Each spring in the spring assembly has its upper end connected to a positioning protrusion, and its lower end passes through a circular hole on the base and is fixed inside the base.

[0025] The guide rail is fixedly mounted on the side of the fixed plate near the back plate; the lower part of the guide rail passes through the square holes on the base plate and the base in sequence, and the bottom end is completely fixed on the square hole on the top surface; a slider is provided on the guide rail, and the vertical plate of the moving base is fixedly mounted on the slider.

[0026] A sleeve is fixedly installed in the mounting hole formed on the back plate; the large cone gear shaft is horizontally arranged, with one end fixed to the open end of the sleeve; a back bearing is installed on the other end.

[0027] The mechanical transmission assembly includes a right spur rack, a left spur rack, an incomplete gear, a large bevel gear, and a small bevel gear, wherein:

[0028] The incomplete gear has a certain length in the axial direction and is fixedly mounted on the back bearing;

[0029] The right and left spur racks are arranged opposite to each other and vertically fixed on the vertical plate. The end of the incomplete gear near the vertical plate meshes with the right or left spur rack during rotation.

[0030] The large bevel gear is located between the incomplete gear and the sleeve, and is fixedly mounted on the back bearing;

[0031] The small bevel gear meshes with the large bevel gear, and the output shafts of the large bevel gear and the small bevel gear are perpendicular to each other.

[0032] The motor support is mounted on the motor mounting base by a screw and nut assembly to fix the DC motor. The shaft of the DC motor is fixedly connected to the output shaft of the small bevel gear. The motor bearing is installed in the mounting hole of the side plate of the fixed base, and the side plate is thickened.

[0033] The holes on the side plate of the fixed base are at the same height as the holes on the back plate of the fixed base, and the distance is determined by the conical meshing relationship.

[0034] The top surface of the fixing plate and the base together limit the travel of the moving base.

[0035] An application of the reciprocating vibration energy harvesting device: The base plate of the moving base of the reciprocating vibration energy harvesting device is attached / fixed to the back side of the shoe, and the electric energy is generated by the stepping motion of a person walking or running, which is used to power the electrical equipment carried by the person, or to store energy for later use.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The reciprocating vibration energy harvesting device of the present invention uses the alternating meshing of the right spur rack, the left spur rack and the incomplete gear to drive the generator to rotate in the same direction during both the loading stroke and the unloading and reset stroke, thereby realizing dual-stroke energy harvesting and improving the mechanical energy utilization rate within the complete reciprocating cycle.

[0038] 2. The reciprocating vibration energy harvesting device of the present invention achieves mechanical rectification through double spur racks and incomplete gears, eliminating the need for complex one-way clutches or ratchet reversing mechanisms and simplifying the reversing structure of reciprocating motion.

[0039] 3. The reciprocating vibration energy harvesting device of the present invention uses a mature DC motor as an electromechanical conversion component, which has a reliable structure and is easy to manufacture, assemble and maintain.

[0040] 4. The reciprocating vibration energy harvesting device of the present invention integrates the components required for motion conversion, power transmission and power generation on a fixed base, with a clear transmission path and compact structure, which is convenient for installation in a limited space.

[0041] 5. The reciprocating vibration energy harvesting device of the present invention utilizes a spring assembly to complete energy storage and reset. By alternating meshing of a double spur rack and an incomplete gear, the linear motion of both the loading stroke and the unloading and reset stroke is converted into the same-direction rotation of the DC motor, thereby realizing dual-stroke energy harvesting within a complete reciprocating cycle. It features a simple commutation structure, compact overall layout, and wide applicability. Attached Figure Description

[0042] Figure 1 This is a three-dimensional structural schematic diagram of the reciprocating vibration energy harvesting device of the present invention;

[0043] Figure 2 for Figure 1 A three-dimensional structural diagram of the reciprocating vibration energy harvesting device from another angle;

[0044] Figure 3 for Figure 1 A schematic diagram of the fixed base and its connecting parts in a reciprocating vibration energy harvesting device;

[0045] Figure 4 for Figure 1 A schematic diagram of the structure of the moving base and its connecting parts in the reciprocating vibration energy harvesting device;

[0046] Figure 5 for Figure 1 A schematic diagram showing the connection relationship between the mechanical transmission components and the DC motor in a reciprocating vibration energy harvesting device;

[0047] Figure 6 for Figure 5 A partial structural diagram of the mechanical transmission component;

[0048] Figure 7 for Figure 5 A partial top-view structural diagram.

[0049] In the diagram: 1. Fixed base; 1-1. Motor mounting base; 1-2. Back plate; 1-3. Side plate; 1-4. Mounting plate; 1-5. Base; 1-6. Top plate; 1-7. Fixed plate; 2. Moving base; 2-1. Base plate; 2-2. Vertical plate; 3. Spring assembly; 5. DC motor; 6. Motor support; 7. Guide rail; 8. Slider; 9. Right spur rack; 10. Left spur rack; 11. Incomplete gear; 12. Large bevel gear; 13. Small bevel gear; 14. Sleeve; 15. Large bevel gear shaft; 16. Small bevel gear output shaft; 17. Back bearing; 18. Motor bearing; 19. Screw and nut assembly. Detailed Implementation

[0050] The technical solution of the invention will be clearly and completely described below with reference to the accompanying drawings and embodiments. Obviously, the following embodiments are only some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example

[0052] See Figures 1-6 The reciprocating vibration energy capture device of this embodiment includes a fixed base 1, a moving base 2, a mechanical transmission assembly and a DC motor 5.

[0053] See Figure 1 and Figure 3 And with Figure 3 With the direction shown as a reference, the fixed base 1 includes: base 1-5, back plate 1-2, side plate 1-3, top plate 1-6, mounting plate 1-4, fixing plate 1-7 and motor mounting base 1-1. The base 1-5 is horizontally positioned and is a box-shaped structure with an internal cavity. Multiple round holes and one square hole are formed on the top surface of the base 1-5. The back plate 1-2 and side plate 1-3 are vertically mounted on the rear and side of the base 1-5, respectively, and are vertically connected. The top plate 1-6 is horizontally mounted on top of the back plate 1-2 and side plate 1-3. The width of the base 1-5 is greater than that of the top plate 1-6, meaning the base 1-5 protrudes forward relative to the top plate 1-6. The mounting plate 1-4 is vertically mounted on the front end face of the top plate 1-6 and is parallel to the back plate 1-2. The upper part of the fixing plate 1-7 is fixedly mounted on the mounting plate 1-4. The motor mounting base 1-1 is horizontally mounted in the middle of the side plate 1-3 on the side furthest from the base 1-5.

[0054] See Figure 1 and Figure 4The movable base 2 is composed of a base plate 2-1 and a vertical plate 2-2 that are perpendicular to each other. The cross-section of the movable base 2 is inverted T-shaped. Multiple positioning protrusions are formed on the bottom of the base plate 2-1. The position and number of the positioning protrusions correspond to the position and number of the circular holes on the base 1-5. Square holes are formed on the base plate 2-1, which correspond to the position of the square holes on the base 1-5. The upper end of each spring in the spring assembly 3 is connected to a positioning protrusion, and the lower end passes through the circular holes on the base 1-5 and is fixed to the protrusion formed in the circular holes of the base 1-5.

[0055] The guide rail 7 is fixedly mounted on the side of the fixed plate 1-7 near the back plate 1-2, and passes through the square hole on the base plate 2-1. The lower part of the guide rail 7 passes through the square holes on the base plate 2-1 and the base 1-5 in sequence, and the bottom end is completely fixed on the square hole on the top surface to ensure that no deformation occurs. The slider 8 is set on the guide rail 7, and the vertical plate 2-2 of the moving base 2 is fixedly mounted on the slider 8.

[0056] See Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The mechanical transmission assembly includes a right spur rack 9, a left spur rack 10, an incomplete gear 11, a large bevel gear 12, and a small bevel gear 13. Wherein:

[0057] A sleeve 14 is fixedly installed in the mounting hole formed on the back plate 1-2 of the fixed base; the large cone gear shaft 15 is horizontally arranged, with one end fixed to the open end of the sleeve 14; and the other end is provided with a back bearing 17 that can rotate relative to the large cone gear shaft 15.

[0058] The incomplete gear 11 has a certain length in the axial direction and is fixedly mounted on the back bearing 17; the right spur rack 9 and the left spur rack 10 are arranged opposite each other and vertically fixed on the vertical plate 2-2. The end of the incomplete gear 11 near the vertical plate 2-2 meshes with the right spur rack 9 or the left spur rack 10 during rotation; in order to achieve alternating meshing and without changing the direction of rotation, the rack parameters of the two spur racks are not completely consistent.

[0059] The large bevel gear 12 is located between the incomplete gear 11 and the sleeve 14, and is fixedly mounted on the back bearing 17; the central axes of the sleeve 14, the large bevel gear shaft 15, the large bevel gear 12 and the incomplete gear 11 are collinear; the small bevel gear 13 meshes with the large bevel gear 12, and the direction of the large bevel gear 12 is perpendicular to the output shaft 16 of the small bevel gear.

[0060] The motor support 6 is mounted on the motor mounting base 1-1 by a screw and nut assembly 19 to fix the DC motor 5. The shaft of the DC motor 5 is fixedly connected to the small bevel gear output shaft 16.

[0061] In order to stabilize the rotation of the small bevel gear 13, a motor bearing 18 is installed on the mounting hole of the side plate 1-3 of the fixed base 1. At the same time, the side plate 1-3 is thickened to make the bearing stable.

[0062] The holes on the side plate 1-3 of the fixed base 1 are at the same height as the holes on the back plate 1-2 of the fixed base 1, and the distance is determined by the conical meshing relationship.

[0063] The top surfaces of the fixed plate 1-7 and the base 1-5 together limit the travel of the movable base 2. The top surface of the bottom plate 2-1 of the movable base 2 contacts the bottom of the fixed plate 1-7 to limit the travel, while keeping the spring assembly 3 initially slightly compressed to store elastic potential energy.

[0064] One application of the above-mentioned reciprocating vibration energy harvesting device is to attach / fix the base plate 2-1 of the moving base 2 of the reciprocating vibration energy harvesting device to the rear side of the shoe, and generate electrical energy through the stepping action of a person walking or running, which is used to power the electrical equipment carried by the person, or to store energy for later use.

[0065] Taking the aforementioned stomping action as an example, the usage process of the reciprocating vibration energy harvesting device is as follows:

[0066] When the foot presses down, the movable base 2 moves downward, compressing the spring assembly 3; when the foot is lifted, the spring assembly 3 returns to its initial state, and the movable base 2 moves upward. As the foot continues to press down, the movable base 2 vibrates back and forth; the right spur rack 9 and the left spur rack 10, fixed on the vertical plate 2-2 of the movable base 2, move back and forth in the vertical direction with the movable base 2, thereby causing the incomplete gear 11, which alternately meshes with the right spur rack 9 and the left spur rack 10, to rotate continuously in one direction; the large bevel gear 12 rotates synchronously with the incomplete gear 11, thereby driving the small bevel gear 13, which meshes with the large bevel gear 12, to rotate; the small bevel gear 13 drives the DC motor 5 to rotate continuously and generate electricity.

[0067] In the above process, the potential energy generated by the stepping motion is converted into rotational mechanical energy, and then further converted into electrical energy.

Claims

1. A reciprocating vibration energy harvesting device, characterized in that, It includes a fixed base (1), a movable base (2), a mechanical transmission assembly, and a DC motor (5), wherein: The fixed base (1) is used to fix the moving base (2), the mechanical transmission assembly and the DC motor (5); The moving base (2) is used to reciprocate along the guide rail (7) fixed on the fixed base (1) under the action of external force and spring assembly (3); The mechanical transmission assembly is used to convert the reciprocating vibration of the moving base (2) into rotational motion in the same direction; The DC motor (5) is used to generate DC electricity under the action of rotational motion in the same direction.

2. The reciprocating vibration energy harvesting device according to claim 1, characterized in that, The fixed base (1) includes a base (1-5), a back plate (1-2), a side plate (1-3), a top plate (1-6), a mounting plate (1-4), a fixing plate (1-7), and a motor mounting base (1-1), wherein: The base (1-5) is horizontally arranged and is a box with an internal cavity. Multiple round holes and one square hole are opened on the top surface of the base (1-5). The back plate (1-2) and the side plate (1-3) are respectively vertically installed at the rear and one side of the base (1-5), and the back plate (1-2) and the side plate (1-3) are vertically connected. The top plate (1-6) is horizontally installed on top of the back plate (1-2) and the side plate (1-3), and the base (1-5) is wider than the top plate (1-6). The mounting plate (1-4) is vertically mounted on the front end face of the top plate (1-6) and parallel to the back plate (1-2); The upper part of the fixing plate (1-7) is fixedly mounted on the mounting plate (1-4); The motor mounting base (1-1) is horizontally installed in the middle of the side plate (1-3) on the side away from the base (1-5).

3. The reciprocating vibration energy harvesting device according to claim 2, characterized in that: The movable base (2) is composed of a base plate (2-1) and a vertical plate (2-2) that are perpendicular to each other. The cross section of the movable base (2) is inverted T-shaped. Multiple positioning protrusions are formed on the bottom of the base plate (2-1), and the position and number of the positioning protrusions correspond to the position and number of the circular holes on the base (1-5). A square hole is formed on the base plate (2-1), which corresponds to the position of the square hole on the base (1-5); In the spring assembly (3), the upper end of each spring is connected to a positioning protrusion, and the lower end passes through the round hole on the base (1-5) and is fixed inside the base (1-5).

4. The reciprocating vibration energy harvesting device according to claim 3, characterized in that: The guide rail (7) is fixedly mounted on the side of the fixed plate (1-7) near the back plate (1-2); the lower part of the guide rail (7) passes through the square holes on the bottom plate (2-1) and the base (1-5) in sequence, and the bottom end is completely fixed on the square hole on the top surface; a slider (8) is provided on the guide rail (7), and the upright plate (2-2) of the moving base (2) is fixedly mounted on the slider (8).

5. The reciprocating vibration energy harvesting device according to claim 4, characterized in that: A sleeve (14) is fixedly installed in the mounting hole formed on the back plate (1-2); the large cone gear shaft (15) is horizontally arranged, with one end fixed to the open end of the sleeve (14); and a back bearing (17) is installed on the other end.

6. The reciprocating vibration energy harvesting device according to claim 5, characterized in that, The mechanical transmission assembly includes a right spur rack (9), a left spur rack (10), an incomplete gear (11), a large bevel gear (12), and a small bevel gear (13), wherein: The incomplete gear (11) has a certain length in the axial direction and is fixedly mounted on the back bearing (17); The right spur rack (9) and the left spur rack (10) are arranged opposite to each other and vertically fixed on the vertical plate (2-2). The end of the incomplete gear (11) near the vertical plate (2-2) meshes with the right spur rack (9) or the left spur rack (10) during rotation. The large bevel gear (12) is located between the incomplete gear (11) and the sleeve (14) and is fixedly mounted on the back bearing (17); The small bevel gear (13) meshes with the large bevel gear (12), and the direction of the large bevel gear (12) is perpendicular to the output shaft (16) of the small bevel gear.

7. The reciprocating vibration energy harvesting device according to claim 6, characterized in that: The motor support (6) is mounted on the motor mounting base (1-1) by a screw and nut assembly (19) to fix the DC motor (5). The shaft of the DC motor (5) is fixedly connected to the output shaft (16) of the small bevel gear. The motor bearing (18) is installed on the mounting hole of the side plate (1-3) of the fixed base (1), and the side plate (1-3) is thickened.

8. The reciprocating vibration energy harvesting device according to claim 7, characterized in that: The holes on the side plate (1-3) of the fixed base (1) are at the same height as the holes on the back plate (1-2) of the fixed base (1), and the distance is determined by the conical meshing relationship.

9. The reciprocating vibration energy harvesting device according to claim 8, characterized in that: The top surfaces of the fixed plate (1-7) and the base (1-5) together limit the travel of the moving base (2).

10. The application of the reciprocating vibration energy harvesting device according to any one of claims 1-9, characterized in that: The base plate (2-1) of the moving base (2) of the reciprocating vibration energy capture device is attached / fixed to the back side of the shoe. Electricity is generated by the stepping motion of a person walking or running, which is used to power the electrical equipment carried by the person or to store energy for later use.

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