Grass fullness alarm mechanism and mower
By introducing a displacement sensor and a full grass rod into the grass collection device of the lawnmower, combined with a controller and an audible and visual prompt module, the passive full grass alarm problem of the existing side-discharge rear collection system is solved, realizing multi-level active reminders and efficient grass clipping collection of the grass collection device.
Patent Information
- Application Number
- CN202520046990.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-07
AI Technical Summary
The existing side-discharge rear collection system has a passive alarm structure for full hay, which has an unclear indication effect and is prone to misjudgment. Furthermore, it is inconvenient to empty the hay when the bin is full.
It employs a displacement sensor and a full grass rod combined with a controller and an audio-visual prompt module. It detects the full grass status of the grass collection device through changes in the magnetic field and provides multi-level active reminders, including green, yellow, and red lights and a buzzer.
It features proactive multi-level alerts when the grass collection device is full, reducing user misjudgment and improving the efficiency and convenience of grass clipping collection.
Smart Images
Figure CN223639735U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lawnmower technology, specifically to a full grass alarm mechanism and a lawnmower. Background Technology
[0002] A lawnmower is a mechanical device used to trim lawns, turf, and other vegetation. They are widely used in home gardens, parks, sports fields, and other places where lawns need to be kept tidy. Depending on different needs and usage scenarios, lawnmowers can be divided into several types. Based on operating methods, they can be categorized as push mowers, self-propelled mowers, ride-on mowers, and remote-controlled or automatic mowers. Ride-on mowers are similar to small tractors, with the rider sitting on the machine to operate it. They are suitable for very large lawns or fields. Ride-on mowers are usually side-mounted, meaning the cut grass is directly discharged to one side or the rear, such as zero-steering ride-on mowers. These mowers typically require a side-mounted rear collection system for grass collection, which generally includes a grass collection bin cover and a grass bag (or collection bin). During use, the side-mounted rear collection system continuously collects grass clippings, and the user is alerted when the bin is nearly full.
[0003] Currently, the full hay alarm structures of side-discharge rear collection systems on the market typically have three drawbacks: First, most are full hay indicator structures, which are passive reminder devices that require users to manually monitor the status of the indicator to determine if the hay is full; second, the full hay indicators of existing ones are not very clear, which can easily lead to misjudgments by users; third, some full hay indicators only change when the hay bin is full, while in the current side-discharge rear collection system, the hay may be overflowing the collection bag when the bin is full, making it inconvenient to empty the hay. Utility Model Content
[0004] One of the objectives of this utility model is to provide a full grass alarm mechanism that can detect whether the grass collection device is full of grass and provide multi-level active full grass reminders to meet the reminder needs of different users, thereby solving the problems existing in the above-mentioned full grass alarm structures.
[0005] The basic solution provided by this utility model is: a grass-covered alarm mechanism, comprising: a displacement sensor, a grass-covered pole, a controller, and an audible and visual alert module;
[0006] The controller is connected to a displacement sensor and an audible and visual alert module;
[0007] The displacement sensor is used to detect the displacement of the full grass stalks and generate a corresponding electrical signal, which is then sent to the controller.
[0008] The controller is used to control the audio-visual prompt module to provide corresponding audio-visual prompts based on electrical signals.
[0009] The full grass pole includes: a first connecting rod, a second connecting rod, a support element, and a reset element;
[0010] One end of the first connecting rod is slidably connected to the second connecting rod, and the second connecting rod slides back and forth relative to the first connecting rod.
[0011] The other end of the first connecting rod is provided with a first mounting hole, the reset element is provided on one side of the first mounting hole, and the support element is inserted into the first mounting hole;
[0012] The displacement sensor includes a trigger end and a sensing end, one of which is installed on the inner wall of the grass collection device, and the other is installed on the end of the first connecting rod that has a first mounting hole.
[0013] Beneficial effects of the basic scheme: In this scheme, the grass-filled rod and displacement sensor are installed in the grass-collecting device. The grass-filled rod includes a first connecting rod, a second connecting rod, a support element, and a reset element. The displacement sensor includes a trigger end and a sensing end. A first mounting hole is provided at the other end of the first connecting rod. A reset element and a support element are provided on one side of the first mounting hole. One end of the support element passes through the reset element and is inserted into the first mounting hole, serving as the support and rotation axis of the grass-filled rod. One of the trigger end and the sensing end is located on the inner wall of the grass-collecting device, and the other is located at the end of the first connecting rod where the first mounting hole is located. The trigger end and the sensing end are arranged opposite each other.
[0014] As haystacks accumulate in the hay bin, some of them press down on the full hay bale. The full hay bale rotates clockwise around its center of rotation, the axis of the supporting element. This causes the trigger or sensing end, embedded at the other end of the full hay bale, to move closer to the trigger or sensing end mounted on the inner wall of the hay collection device. During this approach, the magnetic field around the trigger and sensing ends changes continuously. The sensing end outputs different electrical signals to the controller, which then controls the audible and visual alert module to provide corresponding alerts. Because the sensing end outputs different electrical signals, the controller receives different signals and can control the audible and visual alert module to provide different alerts. Therefore, during the detection of whether the hay collection device is full, it can also provide multi-level active full hay reminders. After the user receives the alarm information and emptys the hay at the designated location, the full hay bale returns to its initial position under the action of the reset element.
[0015] In addition, in this solution, one end of the first connecting rod is slidably connected to the second connecting rod, and the second connecting rod slides back and forth relative to the first connecting rod. The different extension lengths of the second connecting rod result in different heights of its position in the grass collection device, thereby enabling the function of adjusting the grass collection rate at different gears.
[0016] In summary, this solution can detect whether the grass collection device is full and provide multi-level active grass full reminders to meet the reminder needs of different users, thereby solving the problems existing in the above-mentioned grass full alarm structures.
[0017] Furthermore, it also includes: protective outer casing;
[0018] The protective cover is fixed inside the grass collecting device. The grass-filled rod and displacement sensor are installed inside the protective cover. The grass-filled rod passes through the through hole in the protective cover.
[0019] The protective cover can protect the grass-covered alarm mechanism from grass clippings and other debris.
[0020] Furthermore, one end of the first connecting rod is provided with a cavity, and the inner wall of the cavity has a recess and a strip groove; the second connecting rod is provided with a protrusion and a barb that cooperate with the recess and the strip groove. Thus, the second connecting rod can slide back and forth relative to the first connecting rod and can be engaged in different positions to achieve different speed adjustment functions for the grass collection rate.
[0021] Furthermore, the supporting element is a bushing, and the resetting element is a resetting torsion spring. The bushing has a first stepped shaft and a second stepped shaft, the diameter of the first stepped shaft being smaller than that of the second stepped shaft. The first stepped shaft is inserted into the first mounting hole, and the second stepped shaft passes through the resetting torsion spring. This achieves the function of returning the grass stalk to its original position.
[0022] Furthermore, one end of the bushing extends out of the protective cover, and the bushing is installed onto the side wall of the protective cover by bolts and nuts;
[0023] The reset torsion spring is clamped between the first connecting rod and the side wall of the protective cover. One end of the reset torsion spring is inserted into the second mounting hole provided on the protective cover, and the other end abuts against the lower side of the first connecting rod.
[0024] Furthermore, the protective cover is installed on the inner wall of the grass collecting device, located on the side of the grass collecting device's inlet. This facilitates the detection of full grass collection.
[0025] Furthermore, a lug is vertically provided along the lower edge of the end of the first connecting rod where the first mounting hole is located. The lug is used to mount a trigger end or a sensing end. As the first connecting rod rotates, it moves closer to the corresponding trigger end or sensing end installed inside the grass collecting device.
[0026] Furthermore, the trigger end uses a magnetic block, and the sensing end uses a Hall sensor. This design is low-cost and easy to install.
[0027] Furthermore, the audio-visual prompt module includes an alarm light and a buzzer. When the amount of grass clippings in the grass collecting device is below the grass collecting bag, the alarm light illuminates green, and the buzzer does not sound; when the grass clippings are just full in the grass collecting bag, the alarm light illuminates yellow, and the buzzer does not sound; when the grass clippings fill the entire grass collecting device, the alarm light illuminates red, and the buzzer sounds.
[0028] The second objective of this invention is to provide a lawnmower that can detect whether the grass collection device is full and provide multi-level active full grass reminders to meet the reminder needs of different users, thereby solving the problems existing in the above-mentioned full grass alarm structures.
[0029] The second basic solution provided by this utility model is a lawnmower that uses the above-mentioned full grass alarm mechanism.
[0030] The beneficial effects of basic scheme two: The lawnmower adopts the above-mentioned full grass alarm mechanism. Specifically, the full grass alarm mechanism is set in the grass collection device of the lawnmower. It can detect whether the grass collection device is full and provide multi-level active full grass reminders to meet the reminder needs of different users, so as to solve the problems existing in the above-mentioned full grass alarm structure. Attached Figure Description
[0031] Figure 1 This is an exploded view of an embodiment of a grass-covered alarm mechanism according to this utility model;
[0032] Figure 2 This is a schematic diagram of a grass-collecting device installed in an embodiment of a grass-filled alarm mechanism of this utility model. Detailed Implementation
[0033] The following detailed description illustrates the specific implementation method:
[0034] The reference numerals in the accompanying drawings include: 1 for full grass alarm mechanism, 2 for grass collection device, 101 for protective cover, 102 for Hall sensor, 103 for magnetic block, 104 for first connecting rod, 105 for second connecting rod, 106 for reset torsion spring, 107 for bushing, 108 for support lug, 109 for wiring harness, 1010 for through hole, 1011 for first mounting hole, 1012 for second mounting hole, 201 for grass collection box cover, 202 for grass collection bag, and 203 for feed inlet.
[0035] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0036] In the description of this specification, it should be understood that the directional terms such as "upper," "lower," "left," and "right" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that one element is connected to another element "upper," "lower," "left," or "right," it can be directly connected to the other element "upper," "lower," "left," or "right," or indirectly connected to the other element "upper," "lower," "left," or "right" through an intermediate element.
[0037] The basic implementation examples are as follows: Figure 1 As shown: A grass-covered alarm mechanism includes: a displacement sensor, a grass-covered pole, a controller, an audible and visual alert module, and a protective cover 101;
[0038] The controller is connected to a displacement sensor and an audible and visual alert module;
[0039] The grass-covered rod and displacement sensor are housed within the protective cover 101, with the grass-covered rod extending through a through-hole 1010 in the protective cover 101. The grass-covered rod, displacement sensor, and protective cover 101 are integrated into the grass-collecting device 2. Figure 2 As shown; the grass collection device 2 includes: a grass collection box cover 201 and a grass collection bag 202 (or a grass collection box). The grass collection box cover 201 and the grass collection bag 202 form a closed space for grass collection, and also provide an installation point for the full grass alarm mechanism 1. The protective cover 101 can be set on the inner wall of the grass collection box cover 201 or the grass collection bag 202, and the full grass rod should be as close as possible to the bottom of the feed inlet 203 of the grass collection device 2, because the bottom of the feed inlet 203 is the last place to be full of grass. In this embodiment, the protective cover 101 is set on the inner wall of the grass collection device 2, located on the side of the feed inlet 203 of the grass collection device 2.
[0040] The displacement sensor is used to detect the displacement of the full grass stalks and generate a corresponding electrical signal, which is then sent to the controller.
[0041] The controller is used to control the audio-visual prompt module to provide corresponding audio-visual prompts based on electrical signals.
[0042] The full grass stalk includes: a first connecting rod 104, a second connecting rod 105, a support element, and a reset element;
[0043] One end of the first connecting rod 104 is slidably connected to the second connecting rod 105, and the second connecting rod 105 slides back and forth relative to the first connecting rod 104. Specifically, one end of the first connecting rod 104 is provided with a cavity, and the inner sidewall of the cavity has a concave point and a strip groove. In this embodiment, the right sidewall of the cavity has a concave point and the lower sidewall has a strip groove. The second connecting rod 105 is provided with a protrusion and a barb that cooperate with the concave point and the strip groove, so that the second connecting rod 105 slides back and forth relative to the first connecting rod 104. That is, the second connecting rod 105 moves along the direction of the first connecting rod 104, extends out of the first connecting rod 104, or retracts into the second connecting rod 105, and can be engaged in different positions to realize the function of adjusting the grass collection rate at different gears.
[0044] In this embodiment, the first connecting rod 104 is a bent connecting rod with the bend angle opening facing the grass collection bag 202, so that the full grass alarm mechanism 1 (second connecting rod 105) installed on the grass collection box cover 201 is inclined towards the grass collection bag 202, and the top end is close to the opening of the grass collection bag 202, so that when the grass collection bag 202 is full of grass, the full grass rod can be rotated, thereby causing the electrical signal output by the displacement sensor to change, and the controller controls the sound and light prompt module to provide corresponding prompts;
[0045] The other end of the first connecting rod 104 is provided with a first mounting hole 1011. A reset element is provided on one side of the first mounting hole 1011. In this embodiment, the reset element is a reset torsion spring 106. A support element is also provided. In this embodiment, the support element is a bushing 107. One end of the bushing 107 passes through the reset torsion spring 106 and is inserted into the first mounting hole 1011 to serve as a support for the full grass rod and a rotation axis. The full grass rod composed of the first connecting rod 104 and the second connecting rod 105 can rotate clockwise around the bushing 107 under the action of the gravity of the grass clippings.
[0046] Specifically, bushing 107 is a double cylinder with a vertical cross-section in the shape of a T, divided into a first step shaft and a second step shaft, the diameter of the first step shaft being smaller than that of the second step shaft;
[0047] The first stepped shaft is inserted into the first mounting hole 1011, that is, the first connecting rod 104 passes through the first stepped shaft of the bushing 107;
[0048] The second-step shaft passes through the reset torsion spring 106, that is, the torsion spring passes through the second-step shaft of the bushing 107.
[0049] Furthermore, one end of the bushing 107 extends out of the protective cover 101, and the bushing 107 is installed on the side wall of the protective cover 101 by bolts and nuts;
[0050] After the bushing 107 is assembled, the reset torsion spring 106 is clamped between the first connecting rod 104 and the side wall of the protective cover 101. One end of the reset torsion spring 106 is inserted into the second mounting hole 1012 provided on the protective cover 101, and the other end abuts against the lower side of the first connecting rod 104. Both ends are fixedly connected, thereby realizing the function of returning the full grass rod to its original position.
[0051] The displacement sensor includes a trigger end and a sensing end. One of the trigger end and the sensing end is installed on the inner wall of the grass collection device 2, and the other is installed on the end of the first connecting rod 104 that has a first mounting hole 1011. A lug 108 is vertically provided on the lower edge of the end of the first connecting rod 104 that has the first mounting hole 1011. The lug 108 is used to install the trigger end or the sensing end.
[0052] In this embodiment, the trigger end uses a magnetic block 103 and the sensing end uses a Hall sensor 102. The Hall sensor 102 is set on the inner wall of the grass collecting device 2, and the magnetic block 103 is set at one end of the first connecting rod 104 where the first mounting hole 1011 is provided, and is set opposite to the Hall sensor 102.
[0053] Specifically, the Hall sensor 102 is disposed on the inner wall of the grass collection device 2. Both the Hall sensor 102 and the protective cover 101 can be fixedly installed on the inner side of the grass collection box cover 201 or the grass collection bag 202 of the grass collection device 2. In this embodiment, the Hall sensor 102 is fixedly installed on the inner side of the grass collection box cover 201. At the same time, the protective cover 101 is also installed on the inner side of the grass collection box cover 201 to protect the full grass alarm mechanism 1 from the influence of grass clippings and other debris.
[0054] The lower edge of one end of the first connecting rod 104, which is provided with the first mounting hole 1011, is vertically provided with a support ear 108. The magnetic block 103 is embedded in the support ear 108 in the form of an insert and moves closer to the Hall sensor 102 installed on the grass collection box cover 201 as the first connecting rod 104 rotates.
[0055] As the magnetic block 103 approaches the Hall sensor 102, the magnetic field around it changes continuously, and the Hall sensor 102 outputs different electrical signals to the controller; in this embodiment, the controller is a vehicle controller.
[0056] In this embodiment, the Hall sensor 102 is connected to the controller via a wiring harness 109, thereby outputting different electrical signals to the controller. The controller controls the sound and light prompt module to perform corresponding sound and light prompts according to the electrical signals.
[0057] The audio-visual prompt module includes: an alarm light and a buzzer; a controller that controls the alarm light and buzzer; different electrical signal ranges corresponding to the grass clippings in the grass collecting device 2; when the grass clippings in the grass collecting device 2 are below the grass collecting bag 202, the alarm light illuminates green, and the buzzer does not sound; when the grass clippings in the grass collecting bag 202 are just full, the alarm light illuminates yellow, and the buzzer does not sound; when the grass clippings fill the entire grass collecting device 2, the alarm light illuminates red, and the buzzer sounds. In this embodiment, the Hall sensor 102 uses an SS49E, the controller uses an STM32 microcontroller, the buzzer uses an SHD4216, the alarm light uses a 12V power supply, 18 0.2W high-power LED beads (including green, yellow, and red beads), and a colorless transparent lampshade.
[0058] The specific implementation process is as follows: Using this scheme, as hay dust accumulates in the hay box, some of the hay dust presses down the full hay bar. The full hay bar rotates clockwise around its rotation center, i.e., the axis of bushing 107, causing the magnetic block 103 embedded at the other end of the full hay bar to move closer to the Hall sensor 102 installed on the hay collection box cover 201. The Hall sensor 102 then converts the position change into a current signal via wiring harness 109 and transmits it to the controller. Finally, the controller controls the color of the warning light and the buzzer alarm. When the hay dust in the hay collection device 2 is below the hay collection bag 202, the warning light is green, and the buzzer does not sound; when the hay dust is just full in the hay collection bag 202, the warning light is yellow, and the buzzer does not sound; when the hay dust fills the entire hay collection device 2, the warning light is red, and the buzzer sounds. After receiving the warning information and emptying the hay at the designated location, the full hay bar returns to its initial position under the action of the reset torsion spring 106.
[0059] This solution provides two alarm settings. The first setting is a passive alarm, where the grass clippings are collected until the height is flush with the grass collection bag 202, facilitating emptying by recreational users. The second setting is an active alarm, where the bag is filled to its full capacity, reducing the frequency of emptying and improving mowing efficiency for professional users. Furthermore, the second connecting rod 105 slides back and forth relative to the first connecting rod 104 and can be engaged in different positions. The different extension lengths of the second connecting rod 105 result in different heights within the grass collection device 2, thus enabling adjustment of the grass collection rate at different settings.
[0060] This embodiment also provides a lawnmower that uses the above-mentioned full grass alarm mechanism 1.
[0061] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A grass-covered alarm mechanism, characterized in that, include: Displacement sensor, full grass pole, controller, and audio-visual prompt module; The controller is connected to a displacement sensor and an audible and visual alert module; The displacement sensor is used to detect the displacement of the full grass stalks and generate a corresponding electrical signal, which is then sent to the controller. The controller is used to control the audio-visual prompt module to provide corresponding audio-visual prompts based on electrical signals. The full grass pole includes: a first connecting rod, a second connecting rod, a support element, and a reset element; One end of the first connecting rod is slidably connected to the second connecting rod, the second connecting rod slides back and forth relative to the first connecting rod, the other end of the first connecting rod is provided with a first mounting hole, the reset element is provided on one side of the first mounting hole, and the support element is inserted into the first mounting hole; The displacement sensor includes a trigger end and a sensing end, one of which is installed on the inner wall of the grass collection device, and the other is installed on the end of the first connecting rod that has a first mounting hole.
2. The overgrown grass alarm mechanism according to claim 1, characterized in that, Also includes: A protective cover is fixed inside the grass collecting device. The grass-filled rod and displacement sensor are installed inside the protective cover. The grass-filled rod passes through a through hole in the protective cover.
3. The overgrown grass alarm mechanism according to claim 1, characterized in that, One end of the first connecting rod is provided with a cavity, and the inner sidewall of the cavity has a concave point and a strip groove; the second connecting rod is provided with a protrusion and a barb that cooperate with the concave point and the strip groove.
4. The overgrown grass alarm mechanism according to claim 2, characterized in that, The support element is a bushing, and the reset element is a reset torsion spring. The bushing has a first stepped shaft and a second stepped shaft, the diameter of the first stepped shaft being smaller than that of the second stepped shaft. The first stepped shaft is inserted into the first mounting hole, and the second stepped shaft passes through the reset torsion spring.
5. The overgrown grass alarm mechanism according to claim 4, characterized in that, One end of the bushing extends out of the protective cover, and the bushing is installed onto the side wall of the protective cover by bolts and nuts. The reset torsion spring is clamped between the first connecting rod and the side wall of the protective cover. One end of the reset torsion spring is inserted into the second mounting hole provided on the protective cover, and the other end abuts against the lower side of the first connecting rod.
6. The overgrown grass alarm mechanism according to claim 2, characterized in that, The protective cover is installed on the inner wall of the grass collecting device, located on the side of the grass collecting device's inlet.
7. The grass-covered alarm mechanism according to claim 1, characterized in that, The lower edge of the end of the first connecting rod with the first mounting hole is vertically provided with a lug, which is used to install a trigger end or a sensing end.
8. The overgrown grass alarm mechanism according to claim 1, characterized in that, The trigger end uses a magnetic block, and the sensing end uses a Hall sensor.
9. The grass-covered alarm mechanism according to claim 1, characterized in that, The audio-visual prompt module includes: a warning light and a buzzer.
10. A lawnmower, characterized in that, The grass-covered alarm mechanism as described in any one of claims 1-9 is adopted.