Buffer device and mower
By designing a buffer device including elastic components and stoppers on the lawn mower, the problem of the accumulation of grass clippings and sludge in the lawn mower buffer device leading to a decrease in buffer performance is solved, achieving effective impact absorption and convenient cleaning.
Patent Information
- Application Number
- CN202421390957.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The lawn mower buffer device accumulates grass clippings and sludge during the working process, resulting in a decrease in its buffering performance and unable to effectively reduce the impact force.
Design a buffer device, including a first shell and a movable component. The movable component is composed of an elastic component and a limiting piece. The elastic component can be compressed through the through hole and retracted. The limiting piece can be detachably connected to facilitate cleaning of accumulated grass. chips and sludge.
Through this buffer device, the lawn mower can effectively absorb and disperse the collision energy during a collision, reducing the impact force. Through the design of the detachable limiter, it is easy to clean the accumulated grass clippings and sludge and maintain the buffering performance.
Smart Images
Figure CN222377103U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of lawn mowers, and in particular to a buffer device and a lawn mower. Background Art
[0002] Lawn mowers usually need to be equipped with buffer devices to reduce the impact force on the lawn mower during collisions and reduce damage to the lawn mower. During the operation of the lawn mower, grass clippings and mud on the ground will continue to accumulate in the buffer device, occupying the space inside the buffer device, weakening its original function of absorbing and dispersing collision energy, resulting in the inability to effectively reduce the impact force during a collision. Utility Model Content
[0003] Based on this, it is necessary to provide a buffer device and a lawn mower to address the problem that grass clippings and sludge accumulate in the buffer device during operation, resulting in a decrease in its buffer performance.
[0004] A buffer device, arranged on a lawn mower, comprises:
[0005] A first shell, wherein the first shell is provided with an active cavity, and an opening and a through hole both communicated with the active cavity, wherein the opening and the through hole are arranged opposite to each other;
[0006] A movable component, the movable component includes an elastic component and a limiting member, the elastic component is located in the movable cavity and at least partially outside the opening, the elastic component can be compressed and deformed along the movable cavity to penetrate the through hole, or recover the deformation to retract through the through hole; the limiting member is detachably connected to one end of the elastic component close to the through hole, the limiting member is at least partially outside the movable cavity, and can abut against the first shell as the elastic component retracts.
[0007] In one embodiment, the elastic component is provided with a hollow portion along the direction from the opening to the through hole, and the limiting member includes a connecting portion and a rotating portion connected to each other, the connecting portion is located in the hollow portion and is threadedly connected to the elastic component, and the rotating portion is located outside the hollow portion and can abut against the first shell.
[0008] In one embodiment, the size of the through hole along a preset direction is larger than its own size along the height direction of the buffer device, and the preset direction, the height direction of the buffer device, and the direction of the opening pointing to the through hole intersect each other, and the three are not coplanar.
[0009] In one embodiment, a reinforcing column is protruded from the first shell, and the reinforcing column extends toward a side away from the limiting member, and the through hole is penetrated by the reinforcing column.
[0010] In one embodiment, the buffer device also includes an induction component, which is arranged in the first shell and outside the active cavity. The active component also includes a magnetic component, which is connected to the elastic component and located in the active cavity, and approaches the induction component in the active cavity as the elastic component moves.
[0011] In one of the embodiments, along the height direction of the buffer device, the sensing component is disposed on the top wall of the first shell, and the magnetic component is embedded in the top of the elastic component.
[0012] In one of the embodiments, a guide member is protruded from the first shell toward the active cavity along the height direction of the buffer device, the guide member extends in a direction from the opening to the through hole, and the guide member is in clearance fit with the elastic component.
[0013] In one embodiment, the elastic component includes a second shell, a guide column and an elastic member, the second shell is located in the active cavity and at least partially outside the opening, the second shell is provided with a accommodating cavity connected to the active cavity, the guide column and the elastic member are both located in the accommodating cavity, one end of the guide column is connected to the second shell, the other end of the guide column is passed through the through hole and is detachably connected to the limit member, one end of the elastic member is connected to the guide column, and the other end of the elastic member abuts against the first shell.
[0014] In one embodiment, both ends of the elastic component along a preset direction are located in the active cavity, the preset direction intersects with the height direction of the buffer device and the direction in which the opening points to the through hole, and the three are not coplanar.
[0015] In a second aspect, a lawn mower comprises the buffer device according to the first aspect.
[0016] The buffer device is installed on the lawn mower. When the elastic component outside the opening of the first shell collides with an obstacle, the elastic component is compressed and deformed along the active cavity to penetrate the through hole. When the lawn mower avoids the obstacle, the elastic component cancels the force and recovers the deformation to shrink along the active cavity through the through hole. Due to the abutment of the limiter, the elastic component can be reset without separating from the first shell. By providing a detachable limiter, when the limiter is removed, the connection with the elastic component can be released, so that the elastic component is separated from the first shell, which makes it easier to clean the grass clippings and sludge accumulated in the first shell and the elastic component, reducing the impact on the buffer performance of the buffer device. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1( a ) is a three-dimensional view of a buffer device provided in an embodiment of the present application from one viewing angle;
[0018] FIG. 1( b ) is a three-dimensional view of the buffer device provided in an embodiment of the present application from another perspective.
[0019] FIG. 2 is an exploded view of the buffer device provided in an embodiment of the present application from one perspective.
[0020] FIG. 3 is an exploded view of the buffer device provided in an embodiment of the present application from another perspective.
[0021] FIG4 (a) is a rear view of the buffer device provided in an embodiment of the present application;
[0022] FIG4(b) is a cross-sectional view of FIG4(a) along the Ⅰ-Ⅰ direction.
[0023] FIG. 5 is a schematic diagram of a partial structure of a buffer device provided in an embodiment of the present application.
[0024] FIG. 6 is a schematic diagram of another partial structure of the buffer device provided in an embodiment of the present application.
[0025] Explanation of the reference numerals: 100, buffer device; 10, first shell; 101, movable cavity; 102, opening; 103, through hole; 104, guide member; 105, reinforcing column; 106, second top wall; 107, second side wall; 1071, first part; 1072, second part; 10721, avoidance groove; 108, second bottom wall; 20, movable component; 21, second shell; 211, accommodating cavity; 212, first top wall; 213, first bottom wall; 214, first side wall; 22, guide column; 221, hollow part; 222, reinforcing rib; 23, elastic member; 3, limit member; 31, connecting part; 32, rotating part; 4, magnetic member; 30, induction component. DETAILED DESCRIPTION
[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0027] In the first aspect, please refer to FIG. 1 (a), the embodiment of the present application provides a buffer device 100, which is arranged on a lawn mower. The buffer device 100 includes a first shell 10 and a movable component 20. Please refer to FIG. 2, the first shell 10 is provided with an active cavity 101, and an opening 102 and a through hole 103 both connected to the active cavity 101, and the opening 102 and the through hole 103 are arranged opposite to each other. The movable component 20 includes an elastic component and a stopper 3, the elastic component is located in the active cavity 101 and at least partially located outside the opening 102, the elastic component can be compressed and deformed along the active cavity 101 to penetrate the through hole 103, or restored and deformed to retract through the through hole 103; please refer to FIG. 1 (b) and FIG. 3, the stopper 3 is detachably connected to one end of the elastic component close to the through hole 103, the stopper 3 is at least partially located outside the accommodating cavity 211, and can abut against the first shell 10 as the elastic component retracts. The buffer device 100 is installed on the lawn mower. When the elastic component outside the opening 102 of the first shell 10 collides with an obstacle, the elastic component is compressed and deformed along the active cavity 101 to pass through the through hole 103. After the lawn mower avoids the obstacle, the elastic component cancels the force and recovers the deformation to retract along the active cavity 101 through the through hole 103. Due to the abutment of the limiter 3, the elastic component can be reset without being separated from the first shell 10. By providing a detachable limiter 3, when the limiter 3 is removed, the connection with the elastic component can be released, so that the elastic component is separated from the first shell 10, and then it is easy to clean the grass clippings and sludge accumulated in the first shell 10 and the elastic component, reducing the impact of the accumulation of grass clippings and sludge on the buffer performance of the buffer device 100.
[0028] In the embodiment of the present application, the AA direction is the direction in which the opening points to the through hole, the BB direction is the preset direction, and the CC direction is the height direction of the buffer device.
[0029] The specific structure of the active component 20 is described below:
[0030] In some embodiments, please refer to FIG. 1 , both ends of the elastic component along the preset direction (BB direction) are located in the active cavity 101, and the preset direction intersects with the height direction (CC direction) of the buffer device 100 and the direction (AA direction) from the opening 102 to the through hole 103, and the three are not coplanar. Thus, when the elastic component is hit along the preset direction, it can be quickly buffered, avoiding the situation where the elastic component is set outside the first shell 10, and the external elastic component is far away from the active cavity 101, resulting in the external elastic component being hit but it is difficult to push the elastic component inside the active cavity 101 to move, thereby affecting the buffering effect of the buffer device 100.
[0031] Please refer to FIG. 2 and FIG. 3 . In some embodiments, the elastic component includes a second shell 21, a guide post 22 and an elastic member 23. The second shell 21 is located in the active cavity 101 and at least partially outside the opening 102. The second shell 21 is provided with a receiving cavity 211 communicating with the active cavity 101. The guide post 22 and the elastic member 23 are both located in the receiving cavity 211. One end of the guide post 22 is connected to the second shell 21. The other end of the guide post 22 is penetrated through the through hole 103 and is detachably connected to the stopper 3. One end of the elastic member 23 is connected to the guide post 22, and the other end of the elastic member 23 abuts against the first shell 10. The guide post 22 is provided to guide the second shell 21 to move in the active cavity 101. When the second shell 21 exposed outside the opening 102 encounters an obstacle and is subjected to an external force, the elastic member 23 deforms and contracts, absorbing the impact force of the collision, and driving the guide column 22 on the second shell 21 to move to the exit hole 103; when the external force is cancelled, the elastic member 23 recovers its deformation and elongation, pushing the guide column 22 of the second shell 21 back to away from the through hole 103, and pulling the limit member 3 to abut against the second shell 21.
[0032] It is understandable that, referring to FIG. 3 , in some embodiments, both ends of the second shell 21 of the elastic component along a preset direction are located in the active cavity 101 . In other words, the second shell 21 as a whole can move along the active cavity 101 of the first shell 10 .
[0033] Further, please refer to FIG5 , the second shell 21 includes a first top wall 212, a first bottom wall 213 and a first side wall 214 connected to each other. Along the height direction (CC direction) of the buffer device 100, the first top wall 212 and the first bottom wall 213 are arranged opposite to each other, and the first side wall 214 is located between the first top wall 212 and the first bottom wall 213, and the three are jointly constructed to form a receiving cavity 211. Please refer to FIG1 , both ends of the first top wall 212, the first bottom wall 213 and the first side wall 214 are gradually bent toward the direction of the through hole 103 (AA direction) to form an inclined surface, so that the second shell 21 is in a "〔" shape as a whole, thereby increasing the angle range of the second shell 21 collision, so that the buffer device 100 can effectively buffer collisions at multiple angles.
[0034] In an optional embodiment, one end of the elastic component close to the through hole 103 and the stopper 3 can be detachably connected by means of a groove and a protrusion. Alternatively, a detachable connection can be achieved by setting a threaded structure. For example, an external thread can be set at one end of the elastic component close to the through hole 103, a groove can be opened on the stopper 3, and an internal thread can be set on the groove wall surface, and the stopper 3 and the elastic component can be detachably connected by threaded connection. In some embodiments, please refer to Figures 4 (b) and 5, the elastic component is provided with a hollow portion 221 along the direction from the opening 102 to the through hole 103 (AA direction), and the stopper 3 includes a connecting portion 31 and a rotating portion 32 connected to each other, the connecting portion 31 is located in the hollow portion 221 and is threadedly connected to the elastic component, and the rotating portion 32 is located outside the hollow portion 221 and can abut against the first shell 10. The thread of the elastic component is set in the hollow portion 221, which can reduce the interference of the external thread on the elastic component entering and exiting the through hole 103. The stopper 3 is provided with a connecting portion 31 and extends into the hollow portion 221, which can increase the contact area with the hollow portion 221, and the rotating portion 32 can facilitate the rotation of the thread, thereby improving the convenience of disassembling the stopper 3. Optionally, a strip-shaped protrusion can be provided on the rotating portion 32 to increase the friction during rotation.
[0035] Please refer to FIG. 4 . It can be understood that, in some embodiments, the guide column 22 is provided with a hollow portion 221 , and the connection portion 31 of the limit member 3 is located in the hollow portion 221 of the guide column 22 and is threadedly connected to the guide column 22 .
[0036] Optionally, the elastic member 23 may be a spring or a spring sheet.
[0037] 5 , optionally, the guide post 22 includes a plurality of guide posts 22, and the plurality of guide posts 22 are disposed at intervals on the first side wall 214. For example, the guide posts 22 may be disposed at both ends of the first side wall 214 and at the middle of the first side wall 214 along a preset direction (BB direction), which can improve the guiding effect on the movement of the second housing 21.
[0038] Please refer to Figure 5. Optionally, a reinforcing rib 222 is provided on the guide column 22, one side of the reinforcing rib 222 is connected to the outer periphery of the guide column 22, and the other side extends to connect with the second shell 21. The provision of the reinforcing rib 222 can improve the supporting effect on the guide column 22 and disperse the force on the guide column 22. Exemplarily, four reinforcing ribs 222 are provided on the guide column 22, and the four reinforcing ribs 222 are distributed in a cross shape on the outer peripheral surface of the guide column 22. Along the height direction (CC direction) of the buffer device 100, the reinforcing ribs 222 on the upper and lower sides of the guide column 22 are respectively connected to the first top wall 212 and the first bottom wall 213. Along the preset direction (BB direction), the reinforcing ribs 222 on the left and right sides of the guide column 22 are both connected to the first side wall 214.
[0039] The specific structure of the first housing 10 will be described below:
[0040] In some embodiments, please refer to FIG. 4 and FIG. 6 , the size of the through hole 103 of the first shell 10 along the preset direction (BB direction) is larger than its own size along the height direction (CC direction) of the buffer device 100, and the preset direction intersects with the height direction of the buffer device 100 and the direction in which the opening 102 points to the through hole 103, and the three are not coplanar. Therefore, please refer to FIG. 6 , the shape of the through hole 103 is a waist-shaped hole, and when the elastic component is collided and penetrates the through hole 103, the elastic component has space to move along the preset direction, thereby being able to adapt to collisions at multiple angles, so that the buffer device 100 has a good buffering effect when it is collided at different angles.
[0041] Furthermore, there is a clearance fit between the hole wall of the through hole 103 along the height direction (CC direction) of the buffer device 100 and the elastic component, which can reduce the size of the through hole 103 along the height direction of the buffer device 100 while ensuring that the elastic component can smoothly enter and exit the through hole 103, and reduce the space for the elastic component to move up and down, thereby reducing the vibration or shaking of the elastic component when entering and exiting the through hole 103.
[0042] In some embodiments, please refer to FIG. 6 , the first shell 10 is convexly provided with a reinforcing column 105, which extends toward the side away from the stopper 3, and the reinforcing column 105 is penetrated by a through hole 103. By providing the reinforcing column 105 to form the through hole 103, the structural strength of the first shell 10 near the through hole 103 is high, and the structural stability can be improved, so that when the elastic component penetrates the through hole 103, the outer peripheral surface of the elastic component can be limited by the reinforcing column 105, so as to avoid the elastic component colliding with the hole wall of the through hole 103 and affecting the structural strength of the first shell 10. Preferably, the reinforcing column 105 is a waist-shaped reinforcing column, which can match the waist-shaped through hole, and improve the structural strength of the second shell 21 when the elastic component moves along the preset direction (BB direction). There are multiple reinforcing columns 105, which can be arranged at intervals on the second shell 21.
[0043] In some embodiments, please refer to FIG. 5 , the first housing 10 is provided with a guide member 104 protruding toward the active cavity 101 along the height direction (CC direction) of the buffer device 100 , and the guide member 104 extends in the direction (AA direction) pointing from the opening 102 to the through hole 103 , and the guide member 104 is clearance-matched with the elastic component. The guide member 104 can guide the movement of the elastic component in the active cavity 101 .
[0044] Further, referring to FIG. 5 , the first housing 10 includes a second top wall 106, a second side wall 107, and a second bottom wall 108 connected to each other. In the height direction of the buffer device 100, the second side wall 107 is disposed between the second top wall 106 and the second bottom wall 108, and the three together form an active cavity 101. A plurality of reinforcing columns 105 are disposed on the second side wall 107 at intervals. The guide member 104 can be disposed on the inner side of the second top wall 106, the inner side of the second bottom wall 108, and the inner side of the second side wall 107, so as to be able to be gap-matched with the first top wall 212, the first bottom wall 213, and the first side wall 214 of the second housing 21, and can guide the first top wall 212, the first bottom wall 213, and the first side wall 214 to move along the active cavity 101.
[0045] The guide members 104 may be one or more, preferably multiple, and multiple guide members 104 may be spaced apart on the inner side of the second top wall 106 , the inner side of the second bottom wall 108 , and the inner side of the second side wall 107 , respectively, to further improve the guiding effect on the movement of the first shell 10 in the active cavity 101 .
[0046] The collision sensing obstacle avoidance function of the buffer device 100 will be described below:
[0047] In some embodiments, please refer to FIG. 1 , the buffer device 100 further includes a sensing component 30, which is disposed in the first shell 10 and outside the accommodating cavity 211, please refer to FIG. 2 and FIG. 3 , and the movable component 20 further includes a magnetic component 4, which is connected to the elastic component and is located in the movable cavity 101, and approaches the sensing component 30 in the movable cavity 101 with the movement of the elastic component. When the magnetic component 4 approaches the sensing component 30, the magnetic field strength near the sensing component 30 changes, and the change of the magnetic signal of the sensing component 30 causes the change of the electric signal. The sensing component 30 transmits the electric signal to the control device of the lawn mower. After receiving the electric signal, the control device controls the walking device of the lawn mower to turn or stop running. In the related art, the magnetic component 4 is semi-enclosedly disposed in the buffer device 100. When the buffer device 100 collides, the magnetic component 4 needs to protrude from the buffer device 100 to be able to sense the sensing component 30 outside the buffer device 100. In the present application, the magnetic component 4 is fully enclosed and disposed inside the active cavity 101, so that the induction process between the magnetic component 4 and the induction component 30 also occurs inside the active cavity 101, thereby protecting the magnetic component 4, preventing the magnetic component 4 from being exposed to the outside and rusting and falling off, and reducing the accumulation of dust and dirt on the magnetic component 4.
[0048] Optionally, the magnetic member 4 may be a cylindrical magnet, a disc magnet, a square magnet, a tile magnet, etc.
[0049] Optionally, the sensing component 30 is a magnetic sensor, such as a Hall sensor, anisotropic magnetoresistance sensor, tunnel magnetoresistance sensor, etc. Preferably, in some embodiments, a Hall sensor may be used. The Hall sensor is highly integrated, and the circuit board and the Hall element can be packaged together, with a compact, lightweight and easy-to-use structure. The output signal of the Hall sensor is linearly related to the strength of the magnetic field, has a fast response time, and can accurately realize position and speed sensing.
[0050] Please refer to FIG. 5 and FIG. 6 , in an optional configuration, the magnetic member 4 can be disposed on the first top wall 212 or the first side wall 214 or the first bottom wall 213 of the second shell 21, and the induction component 30 can be disposed on the second top wall 106 or the second side wall 107 of the first shell 10. Any position where the induction between the magnetic member 4 and the induction component 30 can be achieved is within the protection scope of the embodiment of the present application.
[0051] In some embodiments, please refer to FIG. 5 , along the height direction (CC direction) of the buffer device 100 , the sensing component 30 is arranged on the top wall of the first shell 10 , and the magnetic component 4 is embedded in the top of the elastic component. Thus, the magnetic component 4 and the sensing component 30 are located at a position slightly above the buffer device 100 , which can provide a movable space for the elastic component to penetrate the through hole 103 . Further, the sensing component 30 is arranged above the second top wall 106 of the first shell 10 , and the magnetic component 4 is embedded in the first top wall 212 of the second shell 21 . Since there is a clearance fit between the second top wall 106 and the first top wall 212 , the sensing distance between the magnetic component 4 and the sensing component 30 can be further reduced, and the sensing sensitivity can be improved. Moreover, since the magnetic component 4 is embedded in the first top wall 212 of the second shell 21 , sufficient setting space can be provided for the guide column 22 , so that the guide column 22 can move along the movable cavity 101 .
[0052] Please refer to FIG6 , the second side wall 107 includes a first portion 1071 and a second portion 1072 arranged alternately along a preset direction (BB direction). The first portion 1071 is provided with a reinforcing column 105, and in the direction (AA direction) pointing from the opening 102 to the through hole 103, the second portion 1072 is provided with an avoidance groove 10721. Please refer to FIG1 (b) The groove body of the avoidance groove 10721 protrudes from the first portion 1071 toward the outside of the first shell 10, and the avoidance groove 10721 can avoid the movement of the magnetic member 4.
[0053] In the second aspect, the embodiment of the present application also provides a lawn mower, which includes a buffer device 100 as in the first aspect, as well as a walking device and a control device. The control device is electrically connected to the walking device and the induction component 30 of the buffer device 100, respectively. Please refer to Figures 1 to 3. When the second shell 21 of the buffer device 100 collides with an obstacle, the second shell 21 is subjected to an external force and moves along the active cavity 101, driving the guide column 22 to pass through the through hole 103, the elastic member 23 is compressed, and at the same time drives the magnetic member 4 to approach the induction component 30 located on the first shell 10 to generate induction. When the induction component 30 converts the magnetic signal into an electrical signal and transmits it to the control device, the control device controls the walking device to turn. After the walking device turns, the second shell 21 is no longer subjected to an external force, the elastic member 23 recovers its deformation, and pushes the guide column 22 to retract. The guide column 22 drives the limit member 3 to abut against the first shell 10, and at the same time, the guide column 22 pushes the second shell 21 to reset.
[0054] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0055] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0056] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0057] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0058] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.
[0059] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0060] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A buffer device, provided on a lawn mower, characterized in that: include: A first shell, wherein the first shell is provided with an active cavity, and an opening and a through hole both communicated with the active cavity, wherein the opening and the through hole are arranged opposite to each other; A movable component, the movable component includes an elastic component and a limiting member, the elastic component is located in the movable cavity and at least partially outside the opening, the elastic component can be compressed and deformed along the movable cavity to penetrate the through hole, or recover the deformation to retract through the through hole; the limiting member is detachably connected to one end of the elastic component close to the through hole, the limiting member is at least partially outside the movable cavity, and can abut against the first shell as the elastic component retracts.
2. The buffer device according to claim 1, characterized in that: The elastic component is provided with a hollow portion along the direction from the opening to the through hole, and the limiting member includes a connecting portion and a rotating portion connected to each other, the connecting portion is located in the hollow portion and is threadedly connected to the elastic component, and the rotating portion is located outside the hollow portion and can abut against the first shell.
3. The buffer device according to claim 1, characterized in that: The dimension of the through hole along a preset direction is greater than its own dimension along the height direction of the buffer device. The preset direction, the height direction of the buffer device and the direction in which the opening points to the through hole intersect each other, and the three are not coplanar.
4. The buffer device according to claim 1, characterized in that: The first shell is convexly provided with a reinforcing column, the reinforcing column extends toward a side away from the limiting member, and the through hole is penetrated by the reinforcing column.
5. The buffer device according to claim 1, characterized in that: The buffer device also includes an induction component, which is arranged in the first shell and located outside the active cavity. The active component also includes a magnetic component, which is connected to the elastic component and located in the active cavity, and approaches the induction component in the active cavity as the elastic component moves.
6. The buffer device according to claim 5, characterized in that: Along the height direction of the buffer device, the induction component is arranged on the top wall of the first shell, and the magnetic component is embedded in the top of the elastic component.
7. The buffer device according to claim 1, characterized in that: The first shell is provided with a guide member protruding toward the active cavity along the height direction of the buffer device, the guide member extends in a direction from the opening to the through hole, and the guide member is in clearance fit with the elastic component.
8. The buffer device according to claim 1, characterized in that: The elastic component includes a second shell, a guide column and an elastic member. The second shell is located in the active cavity and at least partially outside the opening. The second shell is provided with a accommodating cavity connected to the active cavity. The guide column and the elastic member are both located in the accommodating cavity. One end of the guide column is connected to the second shell, and the other end of the guide column is passed through the through hole and is detachably connected to the limit member. One end of the elastic member is connected to the guide column, and the other end of the elastic member abuts against the first shell.
9. The buffer device according to claim 1, characterized in that: Both ends of the elastic component along a preset direction are located in the active cavity, the preset direction and the height direction of the buffer device and the direction in which the opening points to the through hole intersect in pairs, and the three are not coplanar.
10. A lawn mower, characterized in that: The lawn mower comprises the buffer device according to any one of claims 1 to 9.