Handheld electric seeder

Abstract

The utility model discloses a handheld electric seeder which comprises a shell, a storage bin with a discharge port is formed in the shell, a connecting rod control mechanism for controlling seed output is installed in the shell, and the connecting rod control mechanism sequentially comprises a pressing control handle, a straight connecting rod, a steering transmission assembly, a pushing piece and an opening and closing control panel according to the motion transmission path of the connecting rod control mechanism. Wherein the straight connecting rod is longitudinally connected to the lower end of the pressing control handle, the steering transmission assembly comprises a hinge shaft and a hinge sleeve which are movably connected in a sleeved mode, the hinge sleeve is connected with the straight connecting rod and the pushing piece, and the pushing piece is connected with the opening and closing control plate which is located below the discharging port. A through hole is formed in the discharge port, so that a falling channel which can be communicated with the discharge port and a sealing part for blocking the discharge port are formed. According to the connecting rod control mechanism, the whole connecting rod control mechanism is arranged to be in a vertical regular shape, the whole connecting rod control mechanism is longitudinally installed, the structure of the connecting rod control mechanism is simplified, the production and assembly cost is reduced, and the use reliability is improved.

Description

Technical Field

[0001] This utility model relates to the field of seeder technology, specifically to a handheld electric seeder. Background Technology

[0002] With the development of technology, agricultural sowing has evolved from manual sowing to mechanical methods, such as the use of electric seeders. This has greatly improved sowing efficiency and reduced farmer fatigue. Existing handheld electric seeders are relatively mature, typically including a hopper for storing seeds, a control component for controlling the output of seeds from the hopper, and a sowing component for quantitatively and evenly sowing the output seeds onto the land. The control component is usually implemented through a linkage mechanism. For example, prior art patents CN218587622U disclose a sowing start-stop mechanism for a seeder, and CN207744372U disclose a handheld electric seeder. In both of these technical solutions, the linkage mechanism for controlling the discharge of seeds from the hopper is relatively complex. For example, there are many linkages, and the linkages are often irregularly shaped, making production relatively complex and increasing production costs. Alternatively, the linkages may be assembled in various directions, making the installation of the linkages more demanding and increasing the time cost of assembly. Summary of the Invention

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a handheld electric seeder. By simplifying the linkage control mechanism and setting it into a regular vertical shape, the installation is also longitudinal, saving assembly space and making production and assembly simpler and more convenient.

[0004] To solve the above problems, the present invention adopts the following solution:

[0005] A handheld electric seeder includes a housing with a handle for gripping, a seed storage bin with a discharge port at the bottom, and a linkage control mechanism for controlling the seed output by controlling the connection state of the discharge port, a seeding device for sowing seeds that fall outside the discharge port into the soil, and an elastic recovery component that allows the linkage control mechanism to return to its original state after being released. The linkage control mechanism, according to its motion transmission path, includes a pressing control handle, a linear linkage, a steering transmission assembly, a pusher, and an opening / closing control plate. The pressing control handle is installed on the handle and partially exposed outside the handle. The linear linkage is longitudinally connected to the lower end of the pressing control handle. The steering transmission assembly includes a hinge shaft and a hinge sleeve that are coaxially and movably sleeved together. The hinge sleeve is connected to the lower part of the linear linkage and the pusher. The pusher is connected to the opening / closing control plate, which is located below the discharge port and has a through hole to form a drop channel that communicates with the discharge port and a sealing part that blocks the discharge port.

[0006] In the above scheme, the opening and closing control plate is pushed by manually pressing the control handle, and then by other components of the linkage control mechanism, so that the drop channel on it is aligned with the discharge port. Specifically, pressing the control handle upward causes the linear linkage to move upward. Taking the figure as an example, the linear linkage causes the hinge sleeve to rotate counterclockwise around the hinge axis, causing the pusher to move to the right. Therefore, the pusher pushes the opening and closing control plate to the right, pushing the drop channel below the discharge port, so that the seeds fall into the sowing device to achieve seed sowing. When it is necessary to stop sowing, the control handle is released, and the linkage control mechanism returns to its initial state under the action of the elastic recovery component, thereby pulling the opening and closing control plate so that its closed part is aligned with the discharge port, preventing the seeds from falling.

[0007] Preferably, the elastic recovery assembly includes a longitudinal recovery spring and a transverse recovery spring, wherein the longitudinal recovery spring is connected between the upper end of the pressing control handle and the housing, and the transverse recovery spring is connected between the opening and closing control plate and the housing, and the longitudinal recovery spring and the transverse recovery spring are located at the upper and lower ends of the linkage control mechanism, respectively.

[0008] In the above configuration, after pressing the control handle upwards to align the drop channel with the discharge port, the longitudinal restoring spring is compressed, generating a downward rebound force, and the lateral restoring spring is stretched, generating a rebound force that moves the opening and closing control plate back. Therefore, when the handle is released, the longitudinal and lateral restoring springs act simultaneously and the rebound forces are superimposed, making the restoring force of the linkage control mechanism more uniform and the restoring speed faster. All parts of the linkage control mechanism produce movement in the same direction. Specifically, the pressing control handle and the straight linkage both move down to return to their original positions, the hinge sleeve rotates clockwise to return to its original position, and the opening and closing control plate moves back to restore the closed part to the state of aligning with the discharge port.

[0009] Preferably, the elastic recovery assembly further includes a stabilizing recovery spring, a mounting sliding groove is formed between the straight connecting rod and the housing, the lower end of the mounting sliding groove is located on the straight connecting rod, the upper end of the mounting sliding groove is located on the housing, and the stabilizing recovery spring is longitudinally installed in the mounting sliding groove.

[0010] A stabilizing spring is further added to increase the restoring force of the elastic restoring component. After releasing the control handle, the linkage control mechanism can return to its original state more quickly and accurately, ensuring fast and accurate start and stop control of seed delivery. Furthermore, a stabilizing spring is set at the straight linkage, making the position distribution of the elastic restoring function of the linkage control mechanism more uniform, further ensuring the restoring effect and efficiency of the elastic restoring component.

[0011] Preferably, the hinge sleeve is connected to the lower part of the straight connecting rod via an oblique connecting plate.

[0012] By setting an inclined connecting plate, the lateral force generated by the rotation of the hinge sleeve can be transmitted to the inclined connecting plate instead of being directly transmitted to the straight connecting rod. This reduces the lateral force on the straight connecting rod and reduces the degree of deformation damage to the straight connecting rod that may be caused by the lateral force.

[0013] Preferably, the housing is further provided with an output adjustment structure that cooperates with the linkage control mechanism to adjust the communication area between the drop channel and the discharge port.

[0014] Preferably, the output adjustment structure includes a polygonal distance adjustment wheel and an operating knob for driving the distance adjustment wheel to rotate. The operating knob is inserted into the distance adjustment wheel. Each side of the distance adjustment wheel is at a different distance from its rotation center. A longitudinal limiting plate protrudes from the straight connecting rod and is located directly below the distance adjustment wheel.

[0015] The above setup involves rotating the operating knob to drive the distance adjustment wheel, thereby adjusting the distance between the lowest point of the distance adjustment wheel and the upper point of the limit plate. This limits the upward movement distance of the limit plate, i.e., the upward movement distance of the linear connecting rod. Therefore, it controls the rotation angle of the hinge sleeve and the movement distance of the opening and closing control plate, thereby controlling the area of ​​the drop channel aligned with the discharge port and adjusting the output amount of seeds.

[0016] Preferably, a stabilizing limiting structure is provided between the linkage control mechanism and the housing. The stabilizing limiting structure includes a limiting plate provided on the housing and a protruding limiting block provided on the side wall of the straight linkage. When the elastic recovery component is in the initial state, the protruding limiting block abuts against the upper end of the limiting plate.

[0017] The above settings limit the lower limit position of the linkage control mechanism, ensuring that the linkage control mechanism remains stable even when not in use, and will not sway up and down due to its own weight or other factors.

[0018] Preferably, the stabilizing spring is in a slightly compressed state in the initial state.

[0019] The above configuration ensures that the linkage control mechanism, even when not in use, receives a restoring force from the stabilizing spring, which applies a slight downward pressure to the linear linkage. This allows the linkage control mechanism to stably abut against the limiting plate via the protruding limiting block, ensuring a compact installation and improved reliability. It also achieves a dual function for the stabilizing spring.

[0020] Preferably, the housing is provided with multiple connecting and reinforcing plates of different shapes, and the connecting and reinforcing plates and the housing form longitudinally distributed sliding channels, with the straight connecting rods being installed in the sliding channels.

[0021] A connecting reinforcement plate is installed to improve the support stability of the mounting housing, ensure the stable installation of each component within the housing, and form a sliding channel to further make the installation of the linkage control assembly compact and improve the reliability of the assembly.

[0022] Preferably, the limiting plate is integrally formed on one of the connecting and reinforcing plates, and the protruding limiting block is integrally formed on the straight connecting rod.

[0023] This design eliminates the need for additional production and assembly of the stable limiting structure, thus improving production efficiency.

[0024] The beneficial effects of this utility model are as follows:

[0025] This utility model sets the linkage control mechanism as a vertically regular shape, and its installation is also longitudinal, which makes the parts production and installation shape regular, simplifies the structure of the linkage control mechanism, reduces production and assembly costs, and improves the reliability of use.

[0026] This invention uses three evenly spaced telescopic springs as the elastic recovery component, located at the top, middle, and bottom of the linkage control mechanism. This ensures the recovery force of the linkage control mechanism while also making the rebound force of the elastic recovery component evenly distributed within the linkage control mechanism. This guarantees that the linkage control mechanism can quickly and accurately return to its original state, enabling fast and accurate start-stop control of seed delivery. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the internal structure of the present invention with the discharge port fully open;

[0029] Figure 3 This is a schematic diagram of the internal structure of the part where the discharge port of this utility model is blocked;

[0030] Figure 4 This is a schematic diagram of the linkage control mechanism for opening the discharge port of this utility model.

[0031] Figure 5 A schematic diagram of the linkage control mechanism for restoring the blocked state of the discharge port of this utility model;

[0032] Figure 6 For this Figure 3 A magnified view of a section at point I;

[0033] Figure 7 This is a schematic diagram of the distance adjustment wheel of this utility model.

[0034] Reference numerals: housing 10, linkage control mechanism 20, spreading device 30, elastic recovery component 40, output adjustment structure 50, stabilizing limit structure 60, handle 11, storage bin 12, discharge port 121, pressing control handle 21, linear linkage 22, steering transmission component 23, pushing component 24, opening and closing control plate 25, limit plate 221, hinge shaft 231, hinge sleeve 232, oblique connecting plate 233, drop channel 251, enclosed part 252, motor drive component 31, fan blade spreading component 32, longitudinal recovery spring 41, transverse recovery spring 42, stabilizing recovery spring 43, mounting sliding groove 431, distance adjustment wheel 51, operating knob 52, limit stop plate 61, protruding limit block 62, connecting reinforcement plate 70, sliding channel 71. Detailed Implementation

[0035] Example 1:

[0036] refer to Figures 1-7 A handheld electric seeder includes a housing 10, which has a handle 11 for gripping, a seed storage bin 12 located below the handle 11, and a discharge port 121 at its bottom. The housing 10 contains a linkage control mechanism 20 for controlling the connection state of the discharge port 121 to control seed output, a sowing device 30 for scattering seeds that fall outside the discharge port 121 into the soil, and an elastic recovery component 40 that allows the linkage control mechanism 20 to return to its original shape after being released.

[0037] The linkage control mechanism 20 includes, in sequence according to its motion transmission path, a pressing control handle 21, a straight link 22, a steering transmission assembly 23, a pusher 24, and an opening / closing control plate 25. The pressing control handle 21 is installed on the handle part 11 and partially exposed outside the handle part 11. The straight link 22 is longitudinally connected to the lower end of the pressing control handle 21. The steering transmission assembly 23 includes a hinge shaft 231 and a hinge sleeve 232 that are coaxially and movably sleeved together. The right part of the hinge sleeve 232 is connected to the lower part of the straight link 22, and the lower part of the hinge sleeve 232 is connected to the pusher 24. The pusher 24 is connected to the opening / closing control plate 25. The opening / closing control plate 25 is located below the discharge port 121. It has a through hole to form a drop channel 251 that can communicate with the discharge port 121 and a closing part 252 that blocks the discharge port 121. By controlling the movement of the opening / closing control plate 25, the position of the opening / closing control plate 25 aligned with the discharge port 121 can be controlled.

[0038] The sowing device 30 is located below the opening and closing control panel 25 and includes a motor drive assembly 31 and a fan-blade sowing assembly 32. The motor drive assembly 31 is coaxially connected to the lower part of the fan-blade sowing assembly 32 and is used to drive the fan-blade sowing assembly 32 to rotate. The fan-blade sowing assembly 32 is located directly below the discharge port 121 and includes a rotating disk connected to the motor drive assembly 31 and multiple blades integrally formed with the rotating disk and distributed circumferentially. The fan-blade sowing assembly 32 is exposed outside the housing 10 and communicates with the outside. When seeds fall from the discharge port 121, they fall into the fan-blade sowing assembly 32. Driven by the motor drive assembly 31, the fan-blade sowing assembly 32 rotates, causing the seeds to undergo centrifugal motion, thereby sowing the seeds into the soil. (Since the motor drive assembly 31 and the fan-blade sowing assembly 32 are existing technologies and not the innovation of this utility model, their structure is not shown in detail in the figure.)

[0039] The elastic recovery component 40 includes a longitudinal recovery spring 41 and a transverse recovery spring 42. The longitudinal recovery spring 41 is connected between the upper end of the pressing control handle 21 and the housing 10, and the transverse recovery spring 42 is connected between the opening and closing control plate 25 and the housing 10. The longitudinal recovery spring 41 and the transverse recovery spring 42 are located at the upper and lower ends of the linkage control mechanism 20, respectively.

[0040] Furthermore, the elastic recovery component 40 also includes a stabilizing recovery spring 43, and the straight connecting rod 22 and the housing 10 form an installation sliding groove 431. The lower end of the installation sliding groove 431 is located on the straight connecting rod 22, and the upper end of the installation sliding groove 431 is located on the housing 10. The stabilizing recovery spring 43 is longitudinally installed in the installation sliding groove 431.

[0041] A stabilizing spring 43 is further provided to increase the restoring force of the elastic restoring component 40. After releasing the pressing control handle 11, the linkage control mechanism 20 can return to its original state more quickly and accurately, ensuring fast and accurate start and stop control of seed delivery. Furthermore, the stabilizing spring 43 is provided at the straight linkage 22, making the position distribution of the elastic restoring function of the linkage control mechanism 20 more uniform, further ensuring the restoring effect and efficiency of the elastic restoring component 40.

[0042] The specific working process of the electric seeder in this embodiment is as follows:

[0043] Taking the perspective of the seeder in the picture as an example, when sowing seeds, first press the control handle 21 upwards. Pressing the control handle 21 drives the connected linear link 22 to move upwards. The linear link 22 drives the hinge sleeve 232 to rotate counterclockwise around the hinge shaft 231, causing the pusher 24 to move to the right. Therefore, the pusher 24 pushes the opening and closing control plate 25 to move to the right, pushing the drop channel 251 to below the discharge port 121. At this time, the seeds can pass through the discharge port 121 and the drop channel 251 into the fan blade sowing assembly 32. The fan blade sowing assembly 32 rotates under the action of the motor drive assembly 31, throwing the seeds out of the electric seeder and onto the ground, thereby realizing the sowing of seeds.

[0044] During seed sowing, pressing the control handle 21 upwards compresses the longitudinal restoring spring 41, and pressing the linear linkage 22 upwards compresses the stabilizing restoring spring 43. The opening / closing control plate 25 moves to the right, stretching the lateral restoring spring 42. Therefore, when it is necessary to stop seed sowing, the control handle 21 is released. The downward rebound force generated by the longitudinal restoring spring 41 and the stabilizing restoring spring 43 drives the control handle 11 and the linear linkage 22 downwards. This downward movement of the two components is then controlled by the steering mechanism. The transmission assembly 23 drives the opening and closing control plate 25 to move back. At the same time, the opening and closing control plate 25 also moves back under the action of the transverse restoring spring 42. Similarly, through the steering transmission assembly 23, it drives the straight connecting rod 22 and the pressing control handle 21 to move down. The back movement of the opening and closing control plate 25 causes the sealing part 252 on it to move to below the discharge port 121, thereby blocking the connection between the discharge port 121 and the fan blade spreading assembly 32, stopping the seed spreading, and restoring the initial state of the sowing motor.

[0045] refer to Figure 6 To ensure a more reasonable and stable connection between the hinge sleeve 232 and the straight connecting rod 22, the hinge sleeve 232 is connected to the lower part of the straight connecting rod 22 via an inclined connecting plate 233. This allows the lateral force generated by the rotation of the hinge sleeve 232 to be transmitted to the inclined connecting plate 233, rather than directly to the straight connecting rod 22, thus reducing the lateral force on the straight connecting rod 22 and minimizing the potential deformation and damage to the straight connecting rod 22 caused by this lateral force.

[0046] refer to Figures 3-5 , Figure 7 To control the opening degree of the discharge port 121 and thus the amount of seeds output, the housing 10 is also equipped with an output adjustment structure 50 that cooperates with the linkage control mechanism 20. This structure is used to adjust the communication area between the drop channel 251 and the discharge port 121, thereby controlling the opening degree of the discharge port 121.

[0047] Specifically, the output adjustment structure 50 includes a polygonal distance adjustment wheel 51 and an operation knob 52 for driving the distance adjustment wheel 51 to rotate. The operation knob 52 is inserted into the distance adjustment wheel 51. Each side of the distance adjustment wheel 51 is at a different distance from its rotation center. A longitudinal limiting plate 221 protrudes from the straight connecting rod 22 and is located directly below the distance adjustment wheel 51.

[0048] The working principle of the output adjustment structure 50 is as follows: by rotating the operation knob 52, it drives the distance adjustment wheel 51 to rotate, thereby adjusting the distance between the lower end of the distance adjustment wheel 51 and the upper end of the limiting plate 221, limiting the upward movement distance of the limiting plate 221, that is, the upward movement distance of the linear connecting rod 22, thus controlling the rotation angle of the hinge sleeve 232 and the movement distance of the opening and closing control plate 25, thereby controlling the area of ​​the drop channel 251 aligned with the discharge port 121 and adjusting the output amount of the seeds.

[0049] refer to Figure 6 To ensure the reliability of the electric seeder and to ensure the stable installation of the linkage control mechanism 20 even when it is not in operation, a stabilizing limiting structure 60 is provided between the linkage control mechanism 20 and the housing 10. The stabilizing limiting structure 60 includes a limiting plate 61 located inside the housing 10 and a protruding limiting block 62 located on the side wall of the straight connecting rod 22. When the elastic recovery component 40 is in its initial state, the protruding limiting block 62 abuts against the upper end of the limiting plate 61. Therefore, when the linkage control mechanism 20 is not in use, its lower end is supported by the limiting plate 61 and will not sway up and down due to its own weight or other factors.

[0050] To further ensure a compact installation of the linkage control mechanism 20 even when not in use, the stabilizing spring 43 is initially in a slightly compressed state. Therefore, even when the linkage control mechanism 20 is not in use, it still receives a restoring force from the stabilizing spring 43, applying a slight downward pressure to the linear linkage 22, ensuring stable contact between the protruding limiting block 62 and the limiting abutment 61. This also achieves a dual function for the stabilizing spring 43.

[0051] refer to Figures 2-3 ,refer to Figure 6 To further improve the compactness of the linkage control assembly and enhance assembly reliability, the housing 10 is provided with multiple connecting and reinforcing plates 70 of different shapes. The connecting and reinforcing plates 70 and the housing 10 form longitudinally distributed sliding channels 71, and the straight connecting rod 22 is installed in the sliding channels 71 with a gap.

[0052] To facilitate production and improve efficiency, the limiting plate 61 is integrally formed on one of the connecting reinforcing plates 70, and the protruding limiting block 62 is integrally formed on the straight connecting rod 22. Therefore, the stable limiting structure 60 requires no additional production or assembly, thus improving production efficiency.

Claims

1. A hand-held electric seeding machine, comprising a housing (10) formed with a handle portion (11) for holding, a storage bin (12) for storing seeds, the bottom of the storage bin (12) being provided with a discharge opening (121), characterized in that, The housing (10) is equipped with a linkage control mechanism (20) for controlling the connection state of the discharge port (121) to control the seed output. The linkage control mechanism (20) includes, in sequence according to its motion transmission path, a pressing control handle (21), a straight linkage (22), a steering transmission assembly (23), a pusher (24), and an opening and closing control plate (25). The steering transmission assembly (23) includes a hinge shaft (231) and a hinge sleeve (232) that are coaxially and movably connected. The hinge sleeve (232) is connected to the lower part of the straight linkage (22) and the pusher (24). The pusher (24) is connected to the opening and closing control plate (25). The opening and closing control plate (25) is located below the discharge port (121) and has a through hole to form a drop channel (251) that can communicate with the discharge port (121) and a closed part (252) that blocks the discharge port (121).

2. The hand-held electric seed planter of claim 1, wherein, The housing (10) is equipped with an elastic recovery component (40) that enables the linkage control mechanism (20) to return to its original state after the release operation. The elastic recovery component (40) includes a longitudinal recovery spring (41) and a transverse recovery spring (42). The longitudinal recovery spring (41) is connected between the upper end of the press control handle (21) and the housing (10), and the transverse recovery spring (42) is connected between the opening and closing control plate (25) and the housing (10). The longitudinal recovery spring (41) and the transverse recovery spring (42) are located at the upper and lower ends of the linkage control mechanism (20), respectively.

3. The hand-held electric seed planter of claim 2, wherein, The elastic recovery component (40) also includes a stabilizing recovery spring (43), and the straight connecting rod (22) and the housing (10) form an installation sliding groove (431). The lower end of the installation sliding groove (431) is located on the straight connecting rod (22), and the upper end of the installation sliding groove (431) is located on the housing (10). The stabilizing recovery spring (43) is longitudinally installed in the installation sliding groove (431).

4. The hand-held electric seed planter according to any one of claims 1-3, characterized in that, The hinge sleeve (232) is connected to the lower part of the straight connecting rod (22) through the oblique connecting plate (233).

5. The hand-held electric seed planter of claim 1, wherein, The press control handle (21) is installed on the handle part (11) and partially exposed outside the handle part (11), and the straight connecting rod (22) is longitudinally connected to the lower end of the press control handle (21).

6. The hand-held electric seed planter of claim 1, wherein, The housing (10) is also provided with an output adjustment structure (50) for adjusting the communication area between the drop channel (251) and the discharge port (121). The output adjustment structure (50) cooperates with the linkage control mechanism (20) and includes a polygonal distance adjustment wheel (51) and an operation knob (52) for driving the distance adjustment wheel (51) to rotate. The operation knob (52) is inserted into the distance adjustment wheel (51). The distance between each side of the distance adjustment wheel (51) and its rotation center is different. A limit plate (221) is provided protruding from the straight linkage (22). The limit plate (221) is located directly below the distance adjustment wheel (51).

7. The hand-held electric seed planter of claim 3, wherein, A stabilizing limiting structure (60) is also provided between the linkage control mechanism (20) and the housing (10). The stabilizing limiting structure (60) includes a limiting plate (61) provided on the housing (10) and a protruding limiting block (62) provided on the side wall of the straight linkage (22). When the elastic recovery component (40) is in the initial state, the protruding limiting block (62) abuts against the upper end of the limiting plate (61).

8. The hand-held electric seed planter of claim 7, wherein, The stabilizing spring (43) is in a compressed state in the initial state.

9. The hand-held electric seed planter of claim 7, wherein, The housing (10) is provided with multiple connecting and reinforcing plates (70) of different shapes. The connecting and reinforcing plates (70) and the housing (10) form a longitudinally distributed sliding channel (71). The straight connecting rod (22) is installed in the sliding channel (71) with a gap.

10. The hand-held electric seed planter of claim 9, wherein, The limiting plate (61) is integrally formed on one of the connecting reinforcing plates (70), and the protruding limiting block (62) is integrally formed on the straight connecting rod (22).

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