Connection structure and lawn mower

Abstract

Embodiments of the present invention provide a connecting structure and a lawnmower. The connecting structure includes: a collision plate connector; a pull rod member forming a spherical pair with the collision plate connector; a fixed base, the pull rod member being connected to the fixed base via a telescopic sleeve; an outer cylinder disposed within the telescopic sleeve, one end of the outer cylinder being slidably connected to the pull rod member, and the other end forming a spherical pair with the fixed base; and a first elastic member disposed within the fixed base, with both ends of the first elastic member connected to the fixed base and the outer cylinder respectively, so as to reset after the outer cylinder rotates relative to the fixed base. In the technical solution of the present invention, by forming a spherical pair between the pull rod member and the collision plate connector in the connecting structure, and by providing a base slider spaced apart from the outer cylinder, under the action of the spherical pair and the base slider, all-around collision and lifting collision judgment can be achieved using only one connecting structure, which is also easier to assemble.

Description

Technical Field

[0001] This invention relates to the field of lawnmower technology, and more specifically, to a connection structure and a lawnmower. Background Technology

[0002] When a lawnmower encounters obstacles such as stones, its ability to detect and avoid them is a crucial factor in improving its safety. Current lawnmowers typically use detectors on the main body to avoid obstacles and adjust the blades accordingly. However, these detectors require additional installation, and the electronic control system has inherent delays, resulting in less than ideal detection performance. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, an embodiment of the first aspect of the present invention provides a connection structure.

[0005] A second aspect of the present invention provides a lawnmower.

[0006] To achieve the above objectives, an embodiment of the first aspect of the present invention provides a connection structure, comprising: a collision plate connector; a tie rod member forming a spherical pair with the collision plate connector; a fixed base, with the tie rod member and the fixed base spaced apart; an outer cylinder, one end of which is slidably connected to the tie rod member, and the other end of which is disposed within the fixed base; and a base slider disposed within the fixed base, with the base slider and the outer cylinder spaced apart; wherein one end of the outer cylinder is slidably connected to the tie rod member, and the other end of which forms a spherical pair with the fixed base; and wherein the outer cylinder is movable toward the fixed base, and after the end of the outer cylinder disposed on the fixed base abuts against the base slider, the outer cylinder can drive the base slider to move together.

[0007] The connection structure provided by the first aspect of the present invention mainly includes a collision plate connector and a fixed base located at both ends, and an outer cylinder connecting the two. The collision plate connector is used to connect with the collision plate of the lawnmower, so that after a collision occurs, the collision can be converted into internal movement through the connector, facilitating subsequent collision sensing and execution of corresponding control logic. The fixed base is used to connect with the housing of the lawnmower, so that the connection between the fixed base and the collision plate is achieved through the connection structure. It should be emphasized that a spherical pair is formed between the tie rod member and the collision plate connector, possessing three degrees of freedom, which improves the collision plate's judgment range. That is, when an obstacle in any direction collides with the collision plate, the collision plate connector will generate a corresponding displacement. At this time, rotation will occur first. After rotating to the limit position, if there is still force, the tie rod member will move together under the action of the spherical pair. At this point, by setting the base slider of the outer cylinder inside the fixed base, the base slider and the outer cylinder can be set at intervals. If a collision occurs, the outer cylinder will be forced to move downwards until it comes into contact with the base slider and continues to move downwards. By detecting the position of the base slider, the collision position can be identified, which is then used for subsequent intelligent control.

[0008] It is understandable that by forming a spherical pair between the tie rod component and the impact plate connector of the connecting structure, and by setting a base slider spaced apart from the outer cylinder, the spherical pair and the base slider can achieve all-around collision and lifting collision judgment using only one connecting structure, which is also easier to assemble. In addition, since the present application will have displacement in the collision direction under the combined action of the above structures when a collision occurs, it can provide a buffer time for the detection and control of the electronic control logic, reducing the possibility of danger.

[0009] Furthermore, the tie rod component and the outer cylinder are slidably connected. When the collision plate connector generates a lifting force during a collision, the position of the tie rod component relative to the outer cylinder can be judged to achieve the lifting judgment. Corresponding control logic can be executed, such as stopping the rotation of the cutter head motor until the tie rod component is no longer subject to the lifting force, and then returning to the initial position. The rotation of the cutter head motor can then be controlled again.

[0010] It should be noted that the outer cylinder moves primarily towards and away from the fixed base. After the outer cylinder reaches the position where it abuts against the base slider, collision detection is achieved by pressing the base slider. The first elastic element is then compressed, and after compression, it resets once the external force disappears, allowing for future use.

[0011] In addition, the connection structure in the above-mentioned solution provided by the present invention may also have the following additional technical features:

[0012] The above technical solution further includes: an inner cylinder disposed inside the outer cylinder, and the inner cylinder and the outer cylinder are slidably connected, with a first mating part formed at the end of the inner cylinder near the tie rod member; and a second mating part disposed at the end of the tie rod member near the inner cylinder; wherein the connection between the inner cylinder and the tie rod member is achieved through the cooperation of the first mating part and the second mating part.

[0013] In this technical solution, an inner cylinder with a sliding connection is set inside the outer cylinder, and one end of the inner cylinder is connected to the tie rod component. This allows the inner and outer cylinders to move relative to each other when the tie rod component is lifted by an external force. Therefore, by collecting this movement, it is possible to determine whether the tie rod component has been lifted.

[0014] Specifically, a first mating component is provided at one end of the inner cylinder, and a second mating component is provided at one end of the tie rod component. Both the first and second mating components are located at the ends of the inner cylinder and the tie rod component that are close to each other, so as to facilitate connection.

[0015] Furthermore, the first mating part can be a connecting shaft, and the second mating part can be a connecting hole, with the connection achieved through the interference fit between the connecting shaft and the connecting hole.

[0016] Of course, the first mating part can be a connecting hole, and the second mating part can be a connecting shaft.

[0017] Alternatively, the first mating part is a pin, and the second mating part is a pin hole.

[0018] The above technical solution further includes: a first elastic element disposed within a fixed base, with both ends of the first elastic element connected to the fixed base and the base slider respectively, so that the outer cylinder moves in the direction toward the fixed base until the outer cylinder abuts against the base slider and compresses the first elastic element and then resets; a second elastic element disposed between the inner cylinder and the outer cylinder, with one end of the second elastic element connected to the outer cylinder and the other end connected to the inner cylinder, so as to realize the reset of the inner cylinder.

[0019] This technical solution also includes elastic elements for resetting, specifically a first elastic element and a second elastic element. The first elastic element is housed within the base slider. By connecting its two ends to the fixed base and the base slider respectively, resetting can be achieved after the base slider moves. Specifically, after the outer cylinder moves to a position against the base slider, it continues to move towards the bottom of the fixed base, compressing the first elastic element and resetting it. This allows for the detection of the compressed state of the first elastic element. The second elastic element is positioned between the inner and outer cylinders, with its two ends connected to the outer and inner cylinders respectively. When the inner cylinder slides relative to the outer cylinder, the second elastic element deforms. After the external force disappears, the stored elastic force in the second elastic element causes the inner cylinder to slide in the opposite direction relative to the outer cylinder, thus resetting the inner cylinder for future use.

[0020] The above technical solution also includes: a telescopic sleeve, which is fitted over the outer cylinder, with both ends of the telescopic sleeve connected to the tie rod component and the fixed base, respectively.

[0021] In this technical solution, a telescopic sleeve is installed on the outer cylinder. By connecting the two ends of the telescopic sleeve to the tie rod component and the fixed base respectively, the inner outer cylinder can be protected to a certain extent. At the same time, because the telescopic sleeve has a certain degree of elasticity, it can contract on one side and extend on the other side when the outer cylinder rotates, thereby achieving protection during movement.

[0022] It is understandable that the telescopic sleeve itself has a variable length, which protects the internal parts.

[0023] Furthermore, the telescopic sleeve can be sealed and connected to the tie rod component and the fixed base at the connection point respectively.

[0024] In the above technical solution, the fixed base specifically includes: a fixed cover, one end of which is connected to the telescopic sleeve, and the fixed cover has an opening for the outer cylinder to pass through; a fixed seat, the other end of which is detachably connected to the fixed cover; wherein, the base slider is connected to the fixed seat through a first elastic element.

[0025] In this technical solution, the fixed base mainly includes a detachably connected fixed cover and a fixed seat. The fixed cover is connected to the telescopic sleeve, and one end of the telescopic sleeve can be connected to the fixed cover. On this basis, a spherical pair is made between the fixed cover and the outer cylinder so that when the impact plate hits the obstacle and causes forward and backward displacement, the outer cylinder will rotate relative to the fixed cover. Thus, when the movement is detected, collision judgment can be achieved.

[0026] In addition, the base slider is connected to the fixed seat through the first elastic element so that the base slider will generate a corresponding displacement when it receives the external force of the outer cylinder, which is more conducive to subsequent collision detection.

[0027] It should be noted that the detachable connection between the mounting base and the mounting cover facilitates assembly. Specifically, the detachable connection can be a snap-fit, a threaded connection, or other detachable connection methods.

[0028] In the above technical solution, the end of the base slider facing the fixed seat is provided with a first protrusion, the end of the fixed seat facing the base slider is provided with a second protrusion, and the two ends of the first elastic member are respectively connected to the first protrusion and the second protrusion.

[0029] In this technical solution, by setting a first protrusion on the base slider and a second protrusion on the fixed seat, a connection object can be provided for the first elastic element. That is, the two ends of the first elastic element are connected to the first protrusion and the second protrusion respectively, so that the first elastic element can deform when the base slider moves relative to the fixed seat, which is conducive to the reset after the external force disappears.

[0030] The specific movement can be rotation or axial movement.

[0031] It is understandable that the first elastic element can be a spring, and the two ends of the spring can be respectively fitted onto the first protrusion and the second protrusion. On this basis, the two ends of the spring can be connected to the first protrusion and the second protrusion.

[0032] In the above technical solution, the end of the fixed cover connected to the telescopic sleeve is provided with a connecting protrusion, and one end of the telescopic sleeve is sleeved over the connecting protrusion.

[0033] In this technical solution, a connecting protrusion is provided at one end of the fixed cover to facilitate the connection of the telescopic sleeve. Specifically, the connecting protrusion is provided at the end where the fixed cover and the telescopic sleeve are connected, which can provide a connection object for the telescopic sleeve and make the connection easier.

[0034] It is understandable that when the telescopic sleeve is made of a material with a certain degree of elasticity, the elasticity of the telescopic sleeve itself can be utilized, and it can be directly fitted onto the connecting protrusion without the need for other connecting structures, while also ensuring the sealing of the connection.

[0035] In the above technical solution, the outer cylinder is provided with a sliding protrusion, and the end of the fixed cover away from the fixed seat is provided with a sliding groove, and the sliding protrusion is slidably connected to the sliding groove; the end of the sliding groove away from the fixed seat is provided with a limiting part, and the inner diameter of the limiting part is smaller than the outer diameter of the sliding protrusion.

[0036] In this technical solution, by setting sliding protrusions and grooves on the outer cylinder and the fixed cover respectively, the outer cylinder can slide in the groove of the fixed cover. On this basis, a limiting part is set at one end of the groove, which can play a certain limiting role for the outer cylinder, preventing the outer cylinder from moving excessively, thereby reducing the possibility of it coming off.

[0037] In the above technical solution, the fixed base further includes: a connecting cover, with a fixed cover at one end away from the fixed base, and the connecting cover and the fixed cover are detachably connected; wherein, the connecting cover and the fixed cover are connected, and one end of the telescopic sleeve is located between the connecting cover and the fixed cover.

[0038] In this technical solution, by providing a connecting cover at the other end of the fixed cover, the end position of the telescopic sleeve can be fixed under the action of the connecting cover and the fixed cover. It can be understood that the connecting cover and the fixed cover are detachably connected, which facilitates assembly operations.

[0039] In the above technical solution, the tie rod component is provided with a snap-fit ​​part, and one end of the telescopic sleeve is connected to the tie rod component through the snap-fit ​​part.

[0040] In this technical solution, by setting a snap-fit ​​part on the tie rod component, one end of the telescopic sleeve can be connected to the snap-fit ​​part, thereby realizing the connection between the telescopic sleeve and the tie rod component.

[0041] The shape of the snap-fit ​​part can be adapted to the end shape of the telescopic sleeve, as long as it can be connected to the telescopic sleeve under the action of the snap-fit ​​part.

[0042] It should be noted that the telescopic sleeve itself can be made of elastic material to ensure a seal after connection, or ordinary material can be used to achieve a seal through the snap-fit ​​part.

[0043] The above technical solution also includes: a first sensor, which is disposed inside the fixed base, and the first sensor is used to determine the rotational position of the outer cylinder relative to the fixed base.

[0044] In this technical solution, by setting a first sensor inside the fixed base, the specific rotation of the outer cylinder can be sensed. Thus, when the outer cylinder rotates between the fixed base and the spherical pair, the force on the outer cylinder can be determined. Since the outer cylinder and the collision plate connector rotate together, the collision detection can be achieved by sensing this rotation.

[0045] It is understandable that the first sensor can be any device that senses displacement, including but not limited to Hall sensors, infrared sensors, etc.

[0046] The above technical solution also includes: a second sensor, located inside the outer cylinder, which is used to determine the sliding position of the inner cylinder relative to the outer cylinder.

[0047] In this technical solution, by setting a second sensor inside the outer cylinder, the displacement of the inner cylinder relative to the outer cylinder can be sensed. Thus, when sliding occurs between the inner and outer cylinders, it can be determined whether the impact plate is raised. Therefore, by sensing this displacement, the detection of the obstacle raising the impact plate connector can be achieved, thereby realizing the lifting detection.

[0048] It is understood that the second sensor can be any device that senses displacement, including but not limited to Hall sensors, infrared sensors, etc.

[0049] A second aspect of the present invention provides a lawnmower, comprising: a housing; and a bumper connected to the housing via an embodiment of the connection structure as described in the first aspect.

[0050] The lawnmower provided according to a second aspect of the present invention mainly includes a housing and a bumper plate. The bumper plate can be installed by connecting the two ends of the connecting structure to the housing and the bumper plate respectively.

[0051] It is understandable that the impact plate connector of the connecting structure is used to connect to the impact plate, while the fixed base of the connecting structure is used to connect to the housing.

[0052] Among them, lawnmowers include purely mechanical lawnmower equipment.

[0053] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0054] Figure 1 A schematic diagram of a connection structure according to an embodiment of the present invention is shown;

[0055] Figure 2 A cross-sectional structural schematic diagram of a connection structure according to an embodiment of the present invention is shown;

[0056] Figure 3 An exploded structural diagram of a connection structure according to an embodiment of the present invention is shown;

[0057] Figure 4 A cross-sectional structural schematic diagram of a connection structure according to an embodiment of the present invention is shown;

[0058] Figure 5 A schematic diagram of a lawnmower according to an embodiment of the present invention is shown.

[0059] in, Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0060] 100: Connecting structure; 102: Bumper plate connector; 103: Telescopic sleeve; 104: Pull rod component; 1042: Second mating part; 1044: Snap-fit ​​part; 106: Fixed base; 1062: Fixed cover; 1063: Connecting protrusion; 1064: Fixed seat; 1065: Second protrusion; 1066: Connecting cover; 1068: Slide groove; 1070: Limiting part; 108: Outer cylinder; 1082: First protrusion; 1084: Sliding protrusion; 110: First elastic element; 112: Inner cylinder; 1122: First mating part; 114: Second elastic element; 116: First sensor; 118: Second sensor; 120: Base slider; 200: Lawn mower; 202: Housing; 204: Bumper plate. Detailed Implementation

[0061] To better understand the above-described objectives, features, and advantages of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0062] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, embodiments of the invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0063] The following reference Figures 1 to 5 Some embodiments of the present invention are described.

[0064] Example 1

[0065] like Figure 1 and Figure 2 As shown, the connection structure 100 proposed in this embodiment mainly includes a collision plate connector 102 and a fixed base 106 located at both ends, and an outer cylinder connecting the two. The collision plate connector 102 is used to connect with the collision plate of the lawnmower so that after the collision plate collides, the collision can be converted into internal movement through the collision plate connector 102, so as to facilitate subsequent collision perception and execution of corresponding control logic. The fixed base 106 is used to connect with the shell of the lawnmower so that the connection between the fixed base 106 and the collision plate is realized under the action of the connection structure 100. It should be emphasized that a spherical pair is formed between the tie rod member 104 and the collision plate connector 102, which has three degrees of freedom, which can improve the judgment range of the collision plate. That is, when an obstacle in any direction collides with the collision plate, the collision plate connector 102 will generate a corresponding displacement. At this time, it will first rotate. After rotating to the limit position, if there is still force, it will drive the tie rod member 104 to move together under the action of the spherical pair. At this time, by setting the base slider 120 of the outer cylinder 108 inside the fixed base 106, the base slider 120 and the outer cylinder 108 can be set at intervals. If a collision occurs, the outer cylinder 108 will be forced to move downward until it comes into contact with the base slider 120 and continues to move downward. By detecting the position of the base slider, the collision position can be identified, which is convenient for subsequent intelligent control.

[0066] It is understood that by forming a spherical pair between the tie rod member 104 and the impact plate connector 102 in the connecting structure 100, and by providing a base slider 120 spaced apart from the outer cylinder 108, the spherical pair and the base slider 120 allow for the determination of omnidirectional collision and lifting collision using only one connecting structure 100, which also facilitates assembly. Furthermore, since the present application exhibits displacement in the collision direction under the combined action of the aforementioned structures during a collision, it provides a buffer time for the detection and control of the electronic control logic, reducing the possibility of danger.

[0067] Furthermore, the tie rod member 104 and the outer cylinder 108 are slidably connected. When the impact plate connector 102 generates a lifting force during a collision, the position of the tie rod member 104 relative to the outer cylinder 108 can be judged to achieve the lifting judgment. Corresponding control logic can be executed, such as stopping the rotation of the cutter head motor until the tie rod member 104 is no longer subject to the lifting force and returns to the initial position, and the rotation of the cutter head motor can continue to be controlled.

[0068] It should be noted that the outer cylinder 108 moves mainly towards and away from the fixed base 106. After the outer cylinder 108 moves to the position where it abuts against the base slider 120, collision detection is achieved by pressing the movement of the base slider. Then, the first elastic element is compressed. After compression is completed, it will reset after the external force disappears, so that it can be used next time.

[0069] Furthermore, a telescopic sleeve 103 is provided over the outer cylinder 108. By connecting the two ends of the telescopic sleeve 103 to the tie rod member 104 and the fixed base 106 respectively, the inner outer cylinder 108 can be protected to a certain extent. At the same time, since the telescopic sleeve 103 has a certain degree of elasticity, it can contract on one side and extend on the other side when the outer cylinder 108 rotates, thereby achieving protection during the movement process.

[0070] It is understandable that the telescopic sleeve itself has a variable length, which protects the internal parts. Furthermore, the telescopic sleeve can be sealed and connected to the tie rod member 104 and the fixed base 106 at the connection point.

[0071] Example 2

[0072] like Figure 1 and Figure 2As shown, the connection structure 100 proposed in this embodiment mainly includes a collision plate connector 102 and a fixed base 106 located at both ends, as well as a telescopic sleeve connecting the two. The collision plate connector 102 is used to connect with the collision plate of the lawnmower so that after the collision plate collides, the collision can be converted into internal movement through the collision plate connector 102, so as to facilitate subsequent collision perception and execution of corresponding control logic. The fixed base 106 is used to connect with the shell of the lawnmower so that the connection between the fixed base 106 and the collision plate is realized under the action of the connection structure 100. It should be emphasized that a spherical pair is formed between the tie rod member 104 and the collision plate connector 102, which has three degrees of freedom, which can improve the judgment range of the collision plate. That is, when an obstacle in any direction collides with the collision plate, the collision plate connector 102 will generate a corresponding displacement. At this time, it will first rotate. After rotating to the limit position, if there is still force, it will drive the tie rod member 104 to move together under the action of the spherical pair. At this time, by setting the base slider 120 of the outer cylinder 108 inside the fixed base 106, the base slider 120 and the outer cylinder 108 can be set at intervals. If a collision occurs, the outer cylinder 108 will be forced to move downward until it abuts against the base slider 120 and continues to move downward, thereby compressing the first elastic member 110. The compression state of the first elastic member 110 can then be detected to facilitate the identification of the collision location and achieve the effect of intelligent control.

[0073] It is understood that by forming a spherical pair between the tie rod member 104 and the impact plate connector 102 in the connecting structure 100, and by providing a base slider 120 spaced apart from the outer cylinder 108, the spherical pair and the base slider 120 allow for the determination of omnidirectional collision and lifting collision using only one connecting structure 100, which also facilitates assembly. Furthermore, since the present application exhibits displacement in the collision direction under the combined action of the aforementioned structures during a collision, it provides a buffer time for the detection and control of the electronic control logic, reducing the possibility of danger.

[0074] Furthermore, the tie rod member 104 and the outer cylinder 108 are slidably connected. When the impact plate connector 102 generates a lifting force during a collision, the position of the tie rod member 104 relative to the outer cylinder 108 can be judged to achieve the lifting judgment. Corresponding control logic can be executed, such as stopping the rotation of the cutter head motor until the tie rod member 104 is no longer subject to the lifting force and returns to the initial position, and the rotation of the cutter head motor can continue to be controlled.

[0075] It is understandable that the telescopic sleeve itself has a variable length, which protects the internal parts. Furthermore, the telescopic sleeve can be sealed and connected to the tie rod member 104 and the fixed base 106 at the connection point.

[0076] It should be noted that the outer cylinder 108 moves mainly in the direction toward and away from the fixed base 106. After the outer cylinder 108 moves to the position where it abuts against the base slider 120, the collision detection can be achieved by compressing the first elastic element 110. After the compression is completed, the cylinder will reset after the external force disappears, so that it can be used next time.

[0077] Furthermore, an inner cylinder 112 is provided inside the outer cylinder 108 with a sliding connection, and one end of the inner cylinder 112 is connected to the tie rod member 104 so that when the tie rod member 104 is lifted by an external force, the inner cylinder 112 and the outer cylinder 108 will move relative to each other. Therefore, by collecting this movement, it is possible to determine whether the tie rod member 104 has been lifted.

[0078] Specifically, such as Figure 3 As shown, a first mating part 1122 is provided at one end of the inner cylinder 112, and a second mating part 1042 is provided at one end of the tie rod member 104. The first mating part 1122 and the second mating part 1042 are both provided at the ends of the inner cylinder 112 and the tie rod member 104 that are close to each other, so as to facilitate connection.

[0079] Furthermore, the first mating part 1122 can be a connecting shaft, and the second mating part 1042 can be a connecting hole, and the connection is achieved through the interference fit between the connecting shaft and the connecting hole.

[0080] Of course, the first mating part 1122 can be a connecting hole, and the second mating part 1042 can be a connecting shaft.

[0081] Alternatively, the first mating part 1122 is a pin, and the second mating part 1042 is a pin hole.

[0082] Furthermore, a first elastic element 110 is provided inside the base slider 120. By connecting the two ends of the first elastic element 110 to the fixed base 106 and the base slider 120 respectively, the base slider 120 can be reset after it moves. That is, after the outer cylinder moves to the position that abuts against the base slider 120, it continues to move toward the bottom of the fixed base 106, thereby compressing the first elastic element 110 and resetting it. In this way, the compression state of the first elastic element 110 can be detected.

[0083] In addition, such as Figure 2As shown, a second elastic element 114 is provided between the inner cylinder 112 and the outer cylinder 108, and the two ends of the second elastic element 114 are respectively connected to the outer cylinder 108 and the inner cylinder 112. When the inner cylinder 112 slides relative to the outer cylinder 108, the second elastic element 114 will deform. After the external force disappears, the inner cylinder 112 will slide in the opposite direction relative to the outer cylinder 108 under the action of the elastic force previously stored in the second elastic element 114, thereby realizing the reset of the inner cylinder 112 for the next use.

[0084] Example 3

[0085] The connection structure 100 proposed in this embodiment mainly includes a collision plate connector 102 and a fixed base 106 located at both ends, as well as a telescopic sleeve connecting the two. The collision plate connector 102 is used to connect with the collision plate of the lawnmower so that after a collision occurs, the collision can be converted into internal movement through the collision plate connector 102, which facilitates subsequent collision sensing and execution of corresponding control logic. The fixed base 106 is used to connect with the housing of the lawnmower so that the connection between the fixed base 106 and the collision plate is realized under the action of the connection structure 100. It should be emphasized that a spherical pair is formed between the tie rod member 104 and the collision plate connector 102, which has three degrees of freedom, which can improve the judgment range of the collision plate. That is, when an obstacle in any direction collides with the collision plate, the collision plate connector 102 will generate a corresponding displacement. At this time, it will first rotate. After rotating to the limit position, if there is still force, it will drive the tie rod member 104 to move together under the action of the spherical pair. At this time, by setting the base slider 120 of the outer cylinder 108 inside the fixed base 106, the base slider 120 and the outer cylinder 108 can be set at intervals. If a collision occurs, the outer cylinder 108 will be forced to move downward until it abuts against the base slider 120 and continues to move downward, thereby compressing the first elastic member 110. The compression state of the first elastic member 110 can then be detected to facilitate the identification of the collision location and achieve the effect of intelligent control.

[0086] It is understood that by forming a spherical pair between the tie rod member 104 and the impact plate connector 102 in the connecting structure 100, and by providing a base slider 120 spaced apart from the outer cylinder 108, the spherical pair and the base slider 120 allow for the determination of omnidirectional collision and lifting collision using only one connecting structure 100, which also facilitates assembly. Furthermore, since the present application exhibits displacement in the collision direction under the combined action of the aforementioned structures during a collision, it provides a buffer time for the detection and control of the electronic control logic, reducing the possibility of danger.

[0087] Furthermore, the tie rod member 104 and the outer cylinder 108 are slidably connected. When the impact plate connector 102 generates a lifting force during a collision, the position of the tie rod member 104 relative to the outer cylinder 108 can be judged to achieve the lifting judgment. Corresponding control logic can be executed, such as stopping the rotation of the cutter head motor until the tie rod member 104 is no longer subject to the lifting force and returns to the initial position, and the rotation of the cutter head motor can continue to be controlled.

[0088] It is understandable that the telescopic sleeve itself has a variable length, which protects the internal parts. Furthermore, the telescopic sleeve can be sealed and connected to the tie rod member 104 and the fixed base 106 at the connection point.

[0089] It should be noted that the outer cylinder 108 moves mainly in the direction toward and away from the fixed base 106. After the outer cylinder 108 moves to the position where it abuts against the base slider 120, the collision detection can be achieved by compressing the first elastic element 110. After the compression is completed, the cylinder will reset after the external force disappears, so that it can be used next time.

[0090] For the fixed base 106, the fixed base 106 mainly includes a detachably connected fixed cover 1062 and a fixed seat 1064. The fixed cover 1062 is connected to the telescopic sleeve, and one end of the telescopic sleeve can be connected to the fixed cover 1062. On this basis, the fixed cover 1062 and the outer cylinder 108 are made into a spherical pair so that when the collision plate hits the obstacle and causes forward and backward displacement, the outer cylinder 108 will rotate relative to the fixed cover 1062. Thus, when the movement is detected, collision judgment can be realized.

[0091] In addition, the base slider 120 is connected to the fixed seat 1064 through the first elastic element 110 so that the base slider 120 will generate a corresponding displacement when it receives the external force of the outer cylinder 108, which is more conducive to subsequent collision detection.

[0092] It should be noted that the detachable connection between the fixing base 1064 and the fixing cover 1062 is for the purpose of facilitating assembly. Specifically, the detachable connection can be a snap-fit, a threaded connection, or other detachable connection methods.

[0093] Furthermore, a first protrusion 1082 is provided on the base slider 120, and a second protrusion 1065 is provided on the fixed seat 1064, which can provide a connection object for the first elastic member 110. That is, the two ends of the first elastic member 110 are connected to the first protrusion 1082 and the second protrusion 1065 respectively, so that when the base slider 120 moves relative to the fixed seat 1064, the first elastic member 110 can be deformed, which is beneficial to the subsequent reset after the external force disappears.

[0094] The specific movement can be rotation or axial movement.

[0095] It is understood that the first elastic element 110 can be a spring, and the two ends of the spring can be respectively sleeved on the first protrusion 1082 and the second protrusion 1065. On this basis, the two ends of the spring can be connected to the first protrusion 1082 and the second protrusion 1065.

[0096] Furthermore, a connecting protrusion 1063 is provided at one end of the fixed cover 1062 to facilitate the connection of the telescopic sleeve. Specifically, the connecting protrusion 1063 is provided at the end where the fixed cover 1062 is connected to the telescopic sleeve, which can provide a connection object for the telescopic sleeve and make the connection easier.

[0097] It is understandable that when the telescopic sleeve is made of a material with a certain degree of elasticity, the elasticity of the telescopic sleeve itself can be utilized, and it can be directly fitted onto the connecting protrusion 1063 without the need for other connecting structures 100, while also ensuring the sealing of the connection.

[0098] Sliding protrusions 1084 and sliding grooves 1068 are respectively provided on the outer cylinder 108 and the fixed cover 1062, so that the outer cylinder 108 can slide in the sliding groove 1068 of the fixed cover 1062. On this basis, a limiting part 1070 is provided at one end of the sliding groove 1068, which can play a certain limiting role on the outer cylinder 108, preventing the outer cylinder 108 from moving excessively, thereby reducing the possibility of it coming off.

[0099] In addition to the fixing cover 1062 and the fixing base 1064, the fixing base 106 also has a connecting cover 1066 at the other end of the fixing cover 1062. The connecting cover 1066 and the fixing cover 1062 can fix the end position of the telescopic sleeve. It can be understood that the connecting cover 1066 and the fixing cover 1062 are detachably connected, which facilitates assembly operations.

[0100] Example 4

[0101] The connection structure 100 proposed in this embodiment mainly includes a collision plate connector 102 and a fixed base 106 located at both ends, as well as a telescopic sleeve connecting the two. The collision plate connector 102 is used to connect with the collision plate of the lawnmower so that after a collision occurs, the collision can be converted into internal movement through the collision plate connector 102, which facilitates subsequent collision sensing and execution of corresponding control logic. The fixed base 106 is used to connect with the housing of the lawnmower so that the connection between the fixed base 106 and the collision plate is realized under the action of the connection structure 100. It should be emphasized that a spherical pair is formed between the tie rod member 104 and the collision plate connector 102, which has three degrees of freedom, which can improve the judgment range of the collision plate. That is, when an obstacle in any direction collides with the collision plate, the collision plate connector 102 will generate a corresponding displacement. At this time, it will first rotate. After rotating to the limit position, if there is still force, it will drive the tie rod member 104 to move together under the action of the spherical pair. At this time, by setting the base slider 120 of the outer cylinder 108 inside the fixed base 106, the base slider 120 and the outer cylinder 108 can be set at intervals. If a collision occurs, the outer cylinder 108 will be forced to move downward until it abuts against the base slider 120 and continues to move downward, thereby compressing the first elastic member 110. The compression state of the first elastic member 110 can then be detected to facilitate the identification of the collision location and achieve the effect of intelligent control.

[0102] It is understood that by forming a spherical pair between the tie rod member 104 and the impact plate connector 102 in the connecting structure 100, and by providing a base slider 120 spaced apart from the outer cylinder 108, the spherical pair and the base slider 120 allow for the determination of omnidirectional collision and lifting collision using only one connecting structure 100, which also facilitates assembly. Furthermore, since the present application exhibits displacement in the collision direction under the combined action of the aforementioned structures during a collision, it provides a buffer time for the detection and control of the electronic control logic, reducing the possibility of danger.

[0103] Furthermore, the tie rod member 104 and the outer cylinder 108 are slidably connected. When the impact plate connector 102 generates a lifting force during a collision, the position of the tie rod member 104 relative to the outer cylinder 108 can be judged to achieve the lifting judgment. Corresponding control logic can be executed, such as stopping the rotation of the cutter head motor until the tie rod member 104 is no longer subject to the lifting force and returns to the initial position, and the rotation of the cutter head motor can continue to be controlled.

[0104] It is understandable that the telescopic sleeve itself has a variable length, which protects the internal parts. Furthermore, the telescopic sleeve can be sealed and connected to the tie rod member 104 and the fixed base 106 at the connection point.

[0105] It should be noted that the outer cylinder 108 moves mainly in the direction toward and away from the fixed base 106. After the outer cylinder 108 moves to the position where it abuts against the base slider 120, the collision detection can be achieved by compressing the first elastic element 110. After the compression is completed, the cylinder will reset after the external force disappears, so that it can be used next time.

[0106] The pull rod member 104 is provided with a snap-fit ​​part 1044, which can connect one end of the telescopic sleeve to the snap-fit ​​part 1044, thereby realizing the connection between the telescopic sleeve and the pull rod member 104.

[0107] The shape of the snap-fit ​​part 1044 can be adapted to the end shape of the telescopic sleeve, as long as it can be connected to the telescopic sleeve under the action of the snap-fit ​​part 1044.

[0108] It should be noted that the telescopic sleeve itself can be made of elastic material to ensure a seal after connection, or ordinary material can be used to achieve a seal under the action of the snap-fit ​​part 1044.

[0109] In a specific embodiment, such as Figure 4 As shown, a first sensor 116 is installed inside the fixed base 106 to sense the specific rotation of the outer cylinder 108. Thus, when the outer cylinder 108 rotates between the fixed base 106 and the fixed base 106 through the spherical joint, the force on the outer cylinder 108 can be determined. Since the outer cylinder 108 and the collision plate connector 102 rotate together, the collision detection can be achieved by sensing this rotation.

[0110] In a specific embodiment, such as Figure 4 As shown, a second sensor 118 is installed inside the outer cylinder 108 to sense the displacement of the inner cylinder 112 relative to the outer cylinder 108. In the event of sliding between the inner cylinder 112 and the outer cylinder 108, it can be determined whether the impact plate is raised. Therefore, by sensing this displacement, the detection of the obstacle raising the impact plate connector 102 can be achieved, thereby realizing the lifting detection.

[0111] It is understood that the first sensor 116 and the second sensor 118 can be any device that senses displacement, including but not limited to Hall sensors, infrared sensors, etc.

[0112] Example 5

[0113] like Figure 5 As shown, the lawnmower 200 proposed in this embodiment mainly includes a housing 202 and a bumper 204. The bumper can be installed by connecting the two ends of the connecting structure 100 to the housing 202 and the bumper 204 respectively.

[0114] It is understood that the impact plate connector 102 of the connecting structure 100 is used to connect to the impact plate, while the fixed base 106 of the connecting structure 100 is used to connect to the housing.

[0115] Among them, lawnmowers include purely mechanical lawnmowers as well as lawnmowers with electromechanical hybrid control, such as lawnmower robots.

[0116] In one specific embodiment, a collision plate connection mechanism for an intelligent lawnmower robot is provided. This mechanism incorporates two compression springs, distributed vertically. The upper spring is a lift-and-reset spring (i.e., the second elastic element 114), and the lower spring is a collision-and-reset spring (i.e., the first elastic element 110). The mechanism also includes one spherical joint, two sliding joints, and one revolute joint. The upper spherical joint, consisting of a lift-and-reset spring pull rod (i.e., pull rod member 104) connected to the collision plate sleeve (i.e., collision plate connector 102), has three degrees of freedom. The lift-and-reset spring pull rod is fixedly connected to the lift-and-reset spring sleeve and can move vertically relative to the collision-and-reset spring outer cylinder 108 (i.e., outer cylinder 108) to form a lift-and-reset sliding joint. The base slider 120 and the fixed base 106 form another sliding joint for compressing the collision-and-reset spring. The collision-and-reset spring outer cylinder 108 and the fixed base 106 form a revolute joint at both ends, allowing the collision-and-reset spring outer cylinder 108 to rotate around the fixed base 106.

[0117] The lifting reset spring lever is fixedly connected to the lifting reset spring sleeve and can move up and down relative to the collision reset spring outer cylinder 108. It returns to center through the lifting reset spring. The collision reset spring outer cylinder 108 and the fixed base 106 rotate around the spherical pair formed therewith and return to center through the collision reset spring.

[0118] In a specific implementation, the impact plate sleeve is fixed to the impact plate, and the fixed base 106 is mounted and fixed to the lower shell of the lawnmower robot. The impact plate can move back and forth relative to the lower shell of the lawnmower robot. When an obstacle is in front of the lawnmower robot, it collides with the impact plate of the lawnmower robot. Under the action of the collision force, the impact plate moves backward, driving the collision reset spring outer cylinder 108 through the impact plate sleeve. The collision reset spring outer cylinder 108 rotates around the rotating joint formed with the fixed base 106, and the collision reset spring outer cylinder 108 presses down on the base slider 120, causing the base slider 120 to move relative to the fixed base 106, compressing the collision reset spring. The lawnmower robot's sensor detects the collision signal and causes the lawnmower robot to move backward. As the lawnmower robot moves backward, the collision force decreases, and under the action of the collision reset spring, the base slider 120 moves upward, and finally the collision reset spring outer cylinder 108 returns to its original position.

[0119] When the lawnmower's impact plate is lifted, the impact plate's rubber sleeve drives the lifting and reset spring rod upwards, separating the impact plate from the lower shell of the lawnmower. Once the lawnmower's sensors detect the lifting signal, it will execute corresponding actions, such as stopping the blade motor, to ensure personnel safety. When the lawnmower is placed back on the ground, the impact plate resets under the force of the lifting and reset spring and gravity.

[0120] According to the connection structure and lawnmower provided by the present invention, by forming a spherical pair between the tie rod member and the impact plate connector of the connection structure, and by setting a base slider spaced apart from the outer cylinder, the judgment of all-round collision and lifting collision can be achieved using only one connection structure under the action of the spherical pair and the base slider, which is also easier to assemble.

[0121] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" 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 invention according to the specific circumstances.

[0122] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0123] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0124] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A connection structure characterized by comprising: The application relates to a connecting device for a baffle plate, which comprises the following components: a baffle plate connecting piece; a pull rod component, which forms a spherical pair with the baffle plate connecting piece; a fixed base, which is spaced apart from the pull rod component; an outer cylinder, one end of which is slidably connected with the pull rod component, and the other end of which is arranged in the fixed base; a base sliding block, which is arranged in the fixed base and is spaced apart from the outer cylinder; wherein the outer cylinder can move towards the fixed base, and after one end of the outer cylinder abuts against the base sliding block, the outer cylinder can drive the base sliding block to move together; an inner cylinder, which is arranged in the outer cylinder and is slidably connected with the outer cylinder; a first elastic component, which is arranged in the fixed base, and two ends of the first elastic component are connected with the fixed base and the base sliding block respectively, so that the first elastic component can be reset after the outer cylinder moves in the direction towards the fixed base until the outer cylinder abuts against the base sliding block and compresses the first elastic component; a second elastic component, which is arranged between the inner cylinder and the outer cylinder, and one end of the second elastic component is connected with the outer cylinder and the other end is connected with the inner cylinder, so as to realize the reset of the inner cylinder.

2. The connection structure according to claim 1, characterized in that Further comprising: one end of the inner cylinder close to the pull rod component is formed with a first matching component; a second matching component is arranged at one end of the pull rod component close to the inner cylinder; wherein the connection between the inner cylinder and the pull rod component is realized through the cooperation of the first matching component and the second matching component.

3. The connection structure according to claim 1, characterized by Further comprising: a telescopic sleeve, which is sleeved on the outer cylinder, and two ends of the telescopic sleeve are connected with the pull rod component and the fixed base respectively.

4. The connection structure according to claim 3, characterized in that The fixed base specifically comprises: a fixed cover, one end of which is connected with the telescopic sleeve, and the fixed cover is provided with an opening through which the outer cylinder passes; a fixed seat, which is detachably connected with the other end of the fixed cover; wherein the base sliding block is connected with the fixed seat through the first elastic component.

5. The connection structure according to claim 4, characterized in that One end of the base sliding block towards the fixed seat is provided with a first protrusion, one end of the fixed seat towards the base sliding block is provided with a second protrusion, and two ends of the first elastic component are connected with the first protrusion and the second protrusion respectively.

6. The connection structure according to claim 4, wherein One end of the fixed cover connected with the telescopic sleeve is provided with a connecting protrusion, and one end of the telescopic sleeve is sleeved on the connecting protrusion.

7. The connection structure according to claim 4, wherein The outer cylinder is provided with a sliding protrusion, one end of the fixed cover away from the fixed seat is provided with a sliding groove, and the sliding protrusion is slidably connected with the sliding groove; one end of the sliding groove away from the fixed seat is provided with a limiting portion, and the inner diameter of the limiting portion is smaller than the outer diameter of the sliding protrusion.

8. The connection structure according to claim 4, wherein The fixed base further comprises: a connecting cover, which is provided with one end of the fixed cover away from the fixed seat, and the connecting cover is detachably connected with the fixed cover; wherein the connecting cover and the fixed cover are connected, and one end of the telescopic sleeve is arranged between the connecting cover and the fixed cover.

9. The connection structure according to claim 3, wherein The pull rod component is provided with a clamping portion, and one end of the telescopic sleeve is connected with the pull rod component through the clamping portion.

10. The connection structure according to claim 1, wherein The application further comprises: a first sensor, which is arranged in the fixed base and is used to determine the rotating position of the outer cylinder relative to the fixed base.

11. The connection structure according to claim 2, characterized by Further comprising: A second sensor is provided in the outer cylinder, and the second sensor is used to determine the sliding position of the inner cylinder relative to the outer cylinder.

12. A lawnmower characterised in that, Comprising: a housing; a striker plate connected to the housing by the connection structure as claimed in any one of claims 1 to 11.

Images