Control mechanism and lawn mower

Abstract

The present invention relates to the technical field of lawn mowers, and specifically discloses a control mechanism and a lawn mower. The mechanism is suitable for a lawn mower to control the operation of the lawn mower, and includes a frame module, a rotating module, a potentiometer body, a connecting bracket and a reset member; the frame module is fixedly mounted on the lawn mower; the rotating module has an initial position relative to the frame module, and is rotatably mounted on the frame module from the initial position, and a docking portion is provided on the rotating module; the potentiometer body outputs a voltage signal according to the rotation state of the rotating module; the connecting bracket is provided with a limiting portion, and the docking portion is adapted to the limiting portion to limit the rotation angle of the rotating module relative to the frame module; the reset member is installed in the frame module, and when the rotating module rotates relative to the frame module from the initial position, the reset member provides a movement reset trend to the rotating module. The design of the connecting bracket realizes the automatic reset of the rotating module, and avoids abnormal noise when the rotating module rotates.

Description

Technical Field

[0001] The present invention relates to the technical field of lawn mowers, and in particular to a control mechanism and a lawn mower. Background Art

[0002] In the prior art, as people pay more attention to the environment, the green areas of major cities in China are getting larger and larger, the varieties of turf are also becoming more abundant, and the rapid development of the lawn industry has led to an increasing demand for lawn mowers.

[0003] A lawn mower is an automated mechanical tool used to trim lawns and vegetation. It can replace or reduce manpower, is easy to operate, fully saves manpower and time, and achieves environmental beautification, so it is widely used. During the use of a lawn mower, people need to constantly adjust the operating handle to maintain the driving of the lawn mower. The driving effect of the lawn mower directly affects the beauty and effect of mowing.

[0004] The manual control mechanism of the existing riding electric lawn mower is located in the middle of the whole machine, arranged on the left and right sides of the safety seat. The control mechanism has four working states, neutral, brake, forward, and reverse. The electrical components connected to the control handle include a rotation position sensor and a brake switch. One of the starting conditions of the lawn mower is that the brake switch is in the off state and the control handle is in the neutral position. When the left and right handles are in neutral at the same time, pushing the control handle forward and backward can realize the forward, reverse or steering of the machine. The existing riding electric lawn mower has the following technical problems:

[0005] 1) Some manual control mechanisms do not have a self-reset structure. When the operator releases the control lever in an emergency, the control lever cannot automatically reset to the neutral position, which is prone to accidents;

[0006] 2) The manual control mechanism with a self-reset structure has the problem that the initial force of the self-reset structure cannot be adjusted, and the thrust of the control lever is prone to be too large;

[0007] 3) The manual control mechanism with a self-resetting structure is prone to produce abnormal noise during the movement of the self-resetting structure. Summary of the invention

[0008] The object of the present invention is to provide a control mechanism and a lawn mower to solve the problem of difficulty in resetting the control mechanism.

[0009] To achieve this object, the present invention adopts the following technical solutions:

[0010] A control mechanism is suitable for a lawn mower to control the operation of the lawn mower, comprising a frame module, a rotating module, a potentiometer body, a connecting bracket and a reset member; the frame module is fixedly mounted on the lawn mower; the rotating module has an initial position relative to the frame module, and is rotatably mounted on the frame module from the initial position, and a docking portion is provided on the rotating module; the potentiometer body outputs a voltage signal according to the rotation state of the rotating module; a limiting portion is provided on the connecting bracket, and the docking portion is adapted to the limiting portion to limit the rotation angle of the rotating module relative to the frame module; the reset member is installed in the frame module, and when the rotating module rotates relative to the frame module from the initial position, the reset member provides a movement reset trend for the rotating module.

[0011] As a preferred technical solution of the control mechanism, the connecting bracket is elastically connected to the rotating module via a reset member, and when the rotating module rotates back and forth relative to the frame module, the reset member provides an elastic restoring force for the rotating module to move back and forth.

[0012] As a preferred technical solution of the control mechanism, the reset member includes a first elastic member and a second elastic member, and the first elastic member and the second elastic member respectively provide elastic restoring force in a back-and-forth direction for the rotation module.

[0013] As an optimal technical solution for the control mechanism, the connecting bracket is elastically connected to the frame module with the first elastic member, and the first elastic member provides an elastic restoring force to the connecting bracket to synchronously drive the rotating module matched with the connecting bracket to have a tendency to move along the first direction; the rotating module is elastically connected to the frame module with the second elastic member, and the second elastic member provides an elastic restoring force to the rotating module to make the rotating module have a tendency to move along the second direction, and the first direction and the second direction are respectively the back-and-forth movement directions of the rotating module.

[0014] As an optimal technical solution for the control mechanism, a base plate positioning portion is fixedly provided in the frame module, a first hook column is provided on the connecting bracket, and two ends of the first elastic member are respectively connected to the base plate positioning portion and the first hook column; the rotating module is fixedly connected to a second hook column, a bracket positioning portion is provided on the connecting bracket, and two ends of the second elastic member are respectively connected to the second hook column and the bracket positioning portion.

[0015] As an optimal technical solution for the control mechanism, a first limiting hole and a second limiting hole are provided on the connecting bracket, wherein the limiting portion is the first limiting hole, the docking portion is a rotating shaft, a first rolling bearing is provided on the rotating shaft outer sleeve, and the rotating shaft slides and inserts into the first limiting hole correspondingly through the first rolling bearing; a base plate positioning shaft is provided on the frame module, a second rolling bearing is provided on the base plate positioning shaft outer sleeve, and the base plate positioning shaft slides and inserts into the second limiting hole correspondingly through the second rolling bearing.

[0016] As an optimal technical solution for the control mechanism, the frame module includes a limit shell, a mounting base plate and a mounting cover, the mounting base plate and the mounting cover are arranged to form a storage cavity, the limit shell is installed in the storage cavity, the limit shell and the mounting base plate are arranged to form a limit cavity, the mounting base plate is provided with a base plate clamping hole, and the limit shell is provided with a shell hole; the first frame rotating shaft and the second frame rotating shaft are respectively protruding on both sides of the rotating module, the axes of the first frame rotating shaft and the second frame rotating shaft are both located on the first axis and are both sleeved with protective covers, the first frame rotating shaft is rotatably connected to the base plate clamping hole through the protective cover, and the second frame rotating shaft is rotatably connected to the shell hole through the protective cover.

[0017] As an optimal technical solution for the control mechanism, the limiting housing is threaded with a first limiting bolt and a second limiting bolt. When the rotating module rotates around the first axis, the rotating module is stopped when the rotating module abuts against the first limiting bolt or the second limiting bolt.

[0018] As an optimal technical solution for the control mechanism, the rotation module includes a control component and a transmission component, the control component is rotatably connected to the transmission component around a second axis, the first frame rotating shaft and the second frame rotating shaft are located on the transmission component, and the first axis and the second axis are perpendicular to each other; a position switch body is connected to the limit housing, and when the control component rotates around the second axis, the control component is pressed against the position switch body, the position switch body is closed, and the potentiometer body stops running.

[0019] As a preferred technical solution of the control mechanism, the installation cover is provided with a cover avoidance hole, and the control assembly passes through the cover avoidance hole and partially extends out of the storage cavity.

[0020] As a preferred technical solution of the control mechanism, the rotating module is connected to a connecting screw, the input shaft of the potentiometer body is rotatably connected to a potentiometer connecting plate, and the potentiometer connecting plate is rotatably connected to the connecting screw.

[0021] A lawn mower comprises the above-mentioned control mechanism.

[0022] Beneficial effects of the present invention:

[0023] The control mechanism utilizes the rotation of the rotating module relative to the frame module to achieve the purpose of driving the potentiometer body to output a voltage signal. By using the setting that the two ends of the connecting bracket are respectively connected to the frame module and the rotating module, the resetting action of the rotating module can be completed with the help of elastic traction. At the same time, the resetting member provides a motion resetting trend for the rotating module, which limits the moving trajectory of the connecting bracket, reduces the risk of the connecting bracket deviating from the predetermined trajectory and causing the rotating module to fail to reset normally, and ensures that the resetting action of the rotating module to the neutral position can be completed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the structure of a control mechanism provided by an embodiment of the present invention;

[0025] Figure 2 is an exploded view of a control mechanism provided by an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the control mechanism provided by the embodiment of the present invention, except for the installation cover, when it is in neutral;

[0027] Figure 4 It is a schematic diagram of the structure of the control mechanism provided by the embodiment of the present invention, excluding the mounting cover, in the forward gear;

[0028] Figure 5 It is a front view of the control mechanism provided by the embodiment of the present invention, excluding the mounting cover, in the forward gear;

[0029] Figure 6 It is a schematic diagram of the structure of the control mechanism provided by the embodiment of the present invention, excluding the mounting cover, when in reverse gear;

[0030] Figure 7 It is a front view of the control mechanism provided by the embodiment of the present invention, excluding the mounting cover, when in reverse gear.

[0031] In the figure:

[0032] 110, operating lever; 120, square rod body; 121, square rod fixing bolt; 122, square rod fixing nut;

[0033] 200, transmission assembly; 210, transmission frame; 211, first frame hole; 212, second frame hole; 213, first frame shaft; 214, second frame shaft; 220, frame plate body; 221, frame plate positioning hole; 222, second hook column; 223, frame plate shaft; 230, lateral limit bolt;

[0034] 310, protective sleeve; 320, adjustment pad; 330, washer; 340, first rolling bearing; 350, locking nut; 360, second rolling bearing;

[0035] 410, first adjusting bolt; 420, first elastic member; 430, connecting bracket; 431, first hooking column; 432, bracket positioning part; 433, first limiting hole; 434, second limiting hole; 435, bracket positioning hole; 440, second adjusting bolt; 450, second elastic member;

[0036] 500, limit housing; 501, housing hole; 510, first limit bolt; 520, second limit bolt; 530, housing bending plate; 531, bending plate through hole; 540, station switch base; 550, station switch body;

[0037] 600, damper; 710, connecting screw rod; 720, potentiometer body; 721, potentiometer connecting plate; 730, potentiometer mounting plate;

[0038] 800, installation base plate; 801, first base plate bending plate; 802, second base plate bending plate; 803, base plate avoidance hole; 804, base plate clamping hole; 810, first base plate bolt; 820, second base plate bolt; 830, base plate positioning part; 831, base plate positioning hole; 840, base plate positioning axis;

[0039] 900, installing the outer cover; 901, first outer cover positioning hole; 903, outer cover avoidance hole; 910, emergency stop switch. DETAILED DESCRIPTION

[0040] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0044] like Figure 1-Figure 3 As shown, this embodiment provides a control mechanism, which is suitable for a lawn mower to control the operation of the lawn mower, including a frame module, a rotating module, a potentiometer body 720, a connecting bracket 430 and a reset member; the frame module is fixedly installed on the lawn mower; the rotating module has an initial position relative to the frame module, and is rotated and installed on the frame module from the initial position, and a docking portion is provided on the rotating module; the potentiometer body 720 outputs a voltage signal according to the rotation state of the rotating module; a limiting portion is provided on the connecting bracket 430, and the docking portion is adapted to the limiting portion to limit the rotation angle of the rotating module relative to the frame module; and the reset member is installed in the frame module, and when the rotating module rotates relative to the frame module from the initial position, the reset member provides a motion reset trend to the rotating module. Specifically, the initial position is a neutral position.

[0045] The control mechanism utilizes the rotation of the rotating module relative to the frame module to achieve the purpose of driving the potentiometer body 720 to output a voltage signal. By utilizing the setting that the two ends of the connecting bracket 430 are respectively connected to the frame module and the rotating module, the resetting action of the rotating module can be completed with the help of elastic traction. At the same time, the resetting member provides a motion resetting trend for the rotating module, which limits the moving track of the connecting bracket 430, reduces the risk of the connecting bracket 430 deviating from the predetermined track and causing the rotating module to fail to reset normally, and ensures that the resetting action of the rotating module to the neutral position can be completed smoothly.

[0046] Preferably, the adaption mode of the docking part and the limiting part adopts the structure of the rotating shaft and the limiting hole to cooperate with each other. In this embodiment, the docking part is the frame plate rotating shaft 223, the limiting part is the first limiting hole 433, and the frame plate rotating shaft 223 provided on the rotating module is adapted to the limiting hole on the connecting bracket 430; in other implementations of this embodiment, the docking part is the limiting hole, the docking part is the rotating shaft, and the limiting hole provided on the rotating module is adapted to the rotating shaft on the connecting bracket 430; the above design schemes can all realize the limiting movement of the connecting bracket 430.

[0047] In this embodiment, the connection bracket 430 is elastically connected to the rotation module via a reset member, and when the rotation module rotates back and forth relative to the frame module, the reset member provides the rotation module with an elastic restoring force for back and forth motion. Specifically, the back and forth motion refers to the action of the connection bracket 430 swinging back and forth on both sides of the initial position (i.e., the neutral position) with the first axis as the rotation axis.

[0048] Furthermore, the reset member includes a first elastic member 420 and a second elastic member 450, which respectively provide elastic restoring force in the back and forth directions for the rotating module. With the design of the first elastic member 420 and the second elastic member 450, the operation of resetting the connecting bracket 430 can be effectively achieved.

[0049] In this embodiment, the connecting bracket 430 and the frame module are elastically connected with a first elastic member 420, and the first elastic member 420 provides an elastic restoring force to the connecting bracket 430 to synchronously drive the rotating module matched with the connecting bracket 430 to have a tendency to move along a first direction; the rotating module and the frame module are elastically connected with a second elastic member 450, and the second elastic member 450 provides an elastic restoring force to the rotating module to make the rotating module have a tendency to move along a second direction. The first direction and the second direction are respectively the back-and-forth movement directions of the rotating module.

[0050] In other implementations of this embodiment, the first elastic member 420 and the second elastic member 450 elastically connect the bracket 430 and the rotating module at the same time; or the first elastic member 420 and the second elastic member 450 elastically connect the rotating module and the frame module at the same time; or the first elastic member 420 elastically connects the bracket 430 and the frame module, and the second elastic member 450 elastically connects the bracket 430 and the rotating module; or the first elastic member 420 and the second elastic member 450 elastically connects the bracket 430 and the rotating module at the same time.

[0051] Preferably, a base plate positioning portion 830 is fixedly provided in the frame module, a first hook column 431 is provided on the connecting bracket 430, and two ends of the first elastic member 420 are respectively connected to the base plate positioning portion 830 and the first hook column 431; the rotating module is fixedly connected to the second hook column 222, a bracket positioning portion 432 is provided on the connecting bracket 430, and two ends of the second elastic member 450 are respectively connected to the second hook column 222 and the bracket positioning portion 432.

[0052] Preferably, a bottom plate positioning hole 831 is provided on the bottom plate positioning portion 830, and a first adjusting bolt 410 is threaded into the bottom plate positioning hole 831; a first hook column 431 is fixedly connected to the connecting bracket 430; the first elastic member 420 is a tension spring, one end of which is fixedly connected to the first adjusting bolt 410, and the other end is hooked on the first hook column 431; a bracket positioning hole 435 is provided on the connecting bracket 430, and a second adjusting bolt 440 is threaded into the bracket positioning hole 435; the second elastic member 450 is also a tension spring, one end of which is fixedly connected to the second adjusting bolt 440, and the other end is hooked on the second hook column 222.

[0053] The connection bracket 430 is provided with a limiting portion and a second limiting hole 434, wherein the limiting portion is the first limiting hole 433, the frame plate rotating shaft 223 is provided with a first rolling bearing 340, and the frame plate rotating shaft 223 slides and inserts into the first limiting hole 433 through the first rolling bearing 340. The frame module is provided with a bottom plate positioning shaft 840, the bottom plate positioning shaft 840 is provided with a second rolling bearing 360, and the bottom plate positioning shaft 840 slides and inserts into the second limiting hole 434 through the second rolling bearing 360, and the bottom plate positioning shaft 840 plays a role in limiting the movement and displacement of the connection bracket 430 relative to the frame module.

[0054] In this embodiment, the docking portion is provided with a first limiting hole 433 and can move along the length direction of the first limiting hole 433, and the first rolling bearing 340 is placed in the first limiting hole 433; the bottom plate positioning shaft 840 is provided with a second limiting hole 434 and can move along the length direction of the second limiting hole 434, and the second rolling bearing 360 is placed in the second limiting hole 434. Specifically, the shapes of the first limiting hole 433 and the second limiting hole 434 can be replaced with elongated holes. In other implementations of this embodiment, the shapes of the first limiting hole 433 and the second limiting hole 434 can be replaced with arc holes, and the use of arc holes can also achieve the purpose of limiting the docking portion and the bottom plate positioning shaft 840.

[0055] The design of the bottom plate positioning shaft 840 passing through the second limiting hole 434 and the docking portion passing through the first limiting hole 433 clearly guarantees the limitation of the moving trajectory of the connecting bracket 430, thereby ensuring that the resetting action of the rotating module can be completed smoothly.

[0056] The provision of the first rolling bearing 340 and the second rolling bearing 360 avoids direct abutment and collision between the base plate positioning shaft 840 and the second limiting hole 434, and between the docking portion and the first limiting hole 433, and converts sliding friction into rolling friction, thereby avoiding the occurrence of abnormal sliding noise during the operation of the control mechanism, reducing the risk of damage and deformation of the frame plate rotating shaft 223, the base plate positioning shaft 840 and the connecting bracket 430, extending the service life of the control mechanism, and reducing the maintenance frequency of the control mechanism.

[0057] In this embodiment, the frame module includes a storage cavity, and the bottom plate positioning portion 830 is elastically connected to one end of the connecting bracket 430 near the first limiting hole 433 through the first elastic member 420; the rotating module is fixedly connected to the second hook column 222, and the second hook column 222 is elastically connected to one end of the connecting bracket 430 near the second limiting hole 434 through the second elastic member 450.

[0058] Specifically, when the operator pulls the rotating module to rotate it counterclockwise, the rotating module drives the connecting bracket 430, so that the first elastic member 420 is stretched. After the operator releases the rotating module, the first elastic member 420 elastically shrinks, driving the connecting bracket 430 and the rotating module to reset; when the operator pulls the rotating module to rotate it clockwise, the rotating module drives the connecting bracket 430, so that the second elastic member 450 is stretched. After the operator releases the rotating module, the second elastic member 450 elastically shrinks, driving the connecting bracket 430 and the rotating module to reset.

[0059] Through the design that one end of the first adjusting bolt 410 is fixedly connected to the first elastic member 420 and the other end is screwed on the bottom plate positioning part 830, the operator can change the initial tension of the first elastic member 420 by adjusting the position of the first adjusting bolt 410 on the bottom plate positioning part 830, so that the rotating module in any position can accurately complete the reset action. The above effect is also reflected in the second adjusting bolt 440. The operator can change the initial tension of the second elastic member 450 by adjusting the position of the second adjusting bolt 440 on the bracket positioning part 432. The above design makes the reset position of the rotating module adjustable, greatly improves the accuracy of the reset action of the rotating module, so that the control mechanism with reset position deviation due to slight damage or deformation can still operate stably for a long time after adjustment by the operator, and the above structural improvement greatly prolongs the service life of the control mechanism. The above design optimizes the force structure of the connecting bracket 430, reduces the risk of damage or destruction of the connecting bracket 430 due to accidents, and ensures the smooth operation of the control mechanism.

[0060] Specifically, the cross-sectional diameter of the tension spring is 2 mm, and the material is 65Mn. The first adjusting bolt 410 and the second adjusting bolt 440 are both hexagonal bolts with elastic flat washers.

[0061] Furthermore, the frame module includes a limiting shell 500, an installation base plate 800 and an installation cover 900, the installation base plate 800 and the installation cover 900 are arranged to form a storage cavity, the limiting shell 500 is installed in the storage cavity, the limiting shell 500 and the installation base plate 800 are arranged to form a limiting cavity, the installation base plate 800 is provided with a base plate clamping hole 804, and the limiting shell 500 is provided with a shell hole 501; the first frame rotating shaft 213 and the second frame rotating shaft 214 are respectively protruding on both sides of the rotating module, the axes of the first frame rotating shaft 213 and the second frame rotating shaft 214 are both located on the first axis and are both sleeved with a protective cover 310, the first frame rotating shaft 213 is rotatably connected to the base plate clamping hole 804 through the protective cover 310, and the second frame rotating shaft 214 is rotatably connected to the shell hole 501 through the protective cover 310. The design of the first frame shaft 213 and the second frame shaft 214 ensures that the design of the rotational connection of the rotating module relative to the frame module around the first axis can be realized. The setting of the mounting base plate 800, the mounting cover 900 and the limiting shell 500 protects the internal components of the control mechanism and greatly reduces the impact of the external environment on the control mechanism. The setting of the protective sleeve 310 plays the role of a sliding bearing, which greatly reduces the wear of the limiting shell 500, the mounting base plate 800, the first frame shaft 213 and the second frame shaft 214 during operation, thereby extending the service life of the control mechanism. Specifically, the material of the protective sleeve 310 is high-strength brass, and the inner and outer walls of the protective sleeve 310 are coated with lubricating oil; the material of the limiting shell 500 is Q235.

[0062] In this embodiment, the edge of the mounting base plate 800 is bent to have a first base plate bent plate 801 and a second base plate bent plate 802, and the mounting outer cover 900 is provided with a first outer cover positioning hole 901 and a second outer cover positioning hole, the first base plate bolt 810 passes through the first outer cover positioning hole 901 and is screwed to the first base plate bent plate 801, and the second base plate bolt 820 passes through the second outer cover positioning hole and is screwed to the second base plate bent plate 802.

[0063] Preferably, an adjustment pad 320 is also sleeved on the second frame shaft 214, and the adjustment pad 320 fits the protective cover 310 on the second frame shaft 214. The adjustment pad 320 is used to adjust the relative position of the protective cover 310, the second frame shaft 214 and the limiting housing 500. The setting of the adjustment pad 320 can remove the harmful shaking of the assembly in the direction of the first axis, thereby improving the stability of the control.

[0064] In this embodiment, the edge of the limiting housing 500 is fixedly connected with a housing bending plate 530, the housing bending plate 530 is attached to the mounting base plate 800, and the housing bending plate 530 is provided with a bending plate through hole 531, and the first assembly bolt passes through the bending plate through hole 531 and is screwed to the mounting base plate 800. The setting of the limiting housing 500 ensures that the rotating module works smoothly without obvious resistance.

[0065] Furthermore, washers 330 are provided on both sides of the first rolling bearing 340 and the second rolling bearing 360, and locking nuts 350 are screwed on the docking part and the base plate positioning shaft 840; the locking nut 350 screwed on the docking part is used to limit the displacement of the first rolling bearing 340 along the length direction of the docking part, and the locking nut 350 screwed on the base plate positioning shaft 840 is used to limit the displacement of the second rolling bearing 360 along the length direction of the base plate positioning shaft 840.

[0066] Preferably, a washer 330 , a first rolling bearing 340 , and a washer 330 are sequentially sleeved on the docking portion and screwed with a locking nut 350 ; a washer 330 , a second rolling bearing 360 , and a washer 330 are sequentially sleeved on the bottom plate positioning shaft 840 and screwed with a locking nut 350 .

[0067] The design of the washer 330 prevents the first rolling bearing 340 and the second rolling bearing 360 from directly contacting and colliding with other components in the axial direction, thereby extending the service life of the first rolling bearing 340 and the second rolling bearing 360. The setting of the locking nut 350 limits the displacement of the first rolling bearing 340 and the second rolling bearing 360 in the axial direction, thereby ensuring that the first rolling bearing 340 can always be located in the first limiting hole 433, and the second rolling bearing 360 can always be located in the second limiting hole 434.

[0068] Specifically, the locking nut 350 is a hexagonal nut, the material of the washer 330 is Q235, and the first rolling bearing 340 and the second rolling bearing 360 are both deep groove ball bearings.

[0069] like Figure 1-Figure 7As shown, as a preferred embodiment, the limiting housing 500 is screwed with a first limiting bolt 510 and a second limiting bolt 520. When the rotating module rotates around the first axis, the rotating module is stopped at the rotating module against the first limiting bolt 510 or the second limiting bolt 520. With the above arrangement, the rotation range of the rotating module can be effectively limited to ensure that the voltage signal output by the potentiometer body 720 is within the predetermined threshold range. Specifically, when the rotating module rotates clockwise around the first axis, that is, when it is in the reverse gear, the rotating module abuts against the first limiting bolt 510; when the rotating module rotates counterclockwise around the first axis, that is, when it is in the forward gear, the rotating module abuts against the second limiting bolt 520. In this embodiment, the rotating module rotates 12° clockwise around the first axis, and the rotating module rotates 16° clockwise around the first axis. Of course, other angles can also be used for setting, which are all within the scope of the present invention.

[0070] In this embodiment, the rotating module is fixedly connected with a connecting screw 710, and a potentiometer connecting plate 721 is rotatably connected to the input shaft of the potentiometer body 720, and the potentiometer connecting plate 721 is rotatably connected to the connecting screw 710. The above arrangement ensures that the operator can accurately control the voltage signal output by the potentiometer body 720 by rotating the rotating module, so that the potentiometer body 720 can accurately output the action instruction to the external device.

[0071] Specifically, one end of the connecting screw 710 is rotatably connected to one end of the input shaft of the potentiometer connecting plate 721 away from the potentiometer body 720, and the other end of the connecting screw 710 is screwed by the second assembly bolt passing through the frame plate positioning hole 221; the connecting screw 710 is a retractable part, and the distance between the two ends of the connecting screw 710 is adjustable. The above design facilitates the operator to adjust the relationship between the rotation angle of the rotating module and the output voltage signal of the potentiometer body 720, and improves the flexibility of the operation of the control mechanism.

[0072] Preferably, the potentiometer body 720 is mounted on a potentiometer mounting plate 730, and the potentiometer mounting plate 730 is screwed onto the mounting base plate 800. When the rotating module rotates, the connecting screw 710 drives the input shaft of the potentiometer body 720 to rotate, and the control mechanism outputs the direction command and the speed command through the rotation range of 16° clockwise to 12° counterclockwise. Specifically, the material of the potentiometer mounting plate 730 is Q235.

[0073] In this embodiment, the rotation module includes a manipulation component and a transmission component 200. The manipulation component is connected to the transmission component 200 by rotation around the second axis. The first frame rotation shaft 213 and the second frame rotation shaft 214 are located on the transmission component 200, and the first axis and the second axis are perpendicular to each other. The position switch body 550 is connected to the limit housing 500. When the manipulation component rotates around the second axis, the manipulation component presses against the position switch body 550, and the position switch body 550 is closed, so that the potentiometer body 720 stops running. Specifically, the position switch body 550 is connected to the potentiometer body 720 in communication, and the position switch body 550 is fixedly connected to the position switch base 540. The position switch base 540 is screwed to the potentiometer mounting plate 730, and the material of the position switch base 540 is Q235.

[0074] Through the above arrangement, the potentiometer body 720 can output a braking command to an external device and at the same time limit the operating component to prevent the transmission component 200 from continuing to rotate around the first axis. The above design is simple and reliable, occupies little space and is easy to operate.

[0075] Preferably, an emergency stop switch 910 is also installed on the mounting cover 900. Pressing down the emergency stop switch 910 can cause the emergency stop switch 910 to press against the station switch body 550, so that the potentiometer body 720 stops running. The above configuration provides a means of outputting a brake command to an external device, which can solve the problem that the control mechanism cannot brake quickly, and further improves the safety of the control mechanism.

[0076] In this embodiment, the operating assembly includes an operating rod 110 and a square rod body 120. The operating rod 110 is screwed to the square rod body 120, and the square rod body 120 is rotatably connected to the transmission assembly 200. The setting of the operating rod 110 is convenient for the operator to hold, and realizes the humanized improvement of the operating mechanism. Specifically, the material of the square rod body 120 is Q235.

[0077] Furthermore, the transmission assembly 200 is connected to a frame plate body 220, the frame plate body 220 extends in a direction away from the operating assembly, the second hook column 222 and the docking portion are both provided on the frame plate body 220, and the potentiometer body 720 connects the rotating module to the frame plate body 220. Specifically, the frame plate body 220 is fixedly connected to the transmission assembly 200.

[0078] Preferably, the transmission assembly 200 further comprises a transmission frame 210, a frame plate body 220 is fixedly connected to a side of the transmission frame 210 away from the operating assembly, a first frame hole 211 and a second frame hole 212 are provided on the transmission frame 210, a square bar fixing bolt 121 and a square bar fixing nut 122 are screwed on the square bar body 120, the square bar fixing bolt 121 is passed through the first frame hole 211, the square bar fixing nut 122 is passed through the second frame hole 212, and the square bar fixing bolt 121 and the square bar fixing nut 122 both extend in the direction of the second axis. Through the above structure, the rotation connection between the square bar body 120 and the transmission frame 210 is realized.

[0079] Specifically, the square rod fixing bolts 121 and the square rod fixing nuts 122 are both sleeved with gaskets, and the material of the gaskets is Q235.

[0080] In this embodiment, the side of the transmission frame 210 is also screwed with a lateral limiting bolt 230, and the installation base plate 800 is also provided with a base plate avoidance hole 803, which is an arc-shaped hole arranged circumferentially along the first axis, and the lateral limiting bolt 230 partially extends out of the storage cavity through the base plate avoidance hole 803. The above arrangement improves the limiting effect of the transmission frame 210 and ensures that the rotation module can work smoothly. The lateral limiting bolt 230 is a hexagonal bolt of M8×40.

[0081] Preferably, the mounting cover 900 is provided with a cover avoidance hole 903, and the operating assembly passes through the cover avoidance hole 903 and partially extends out of the storage cavity. The setting of the cover avoidance hole 903 has the effect of limiting the operating assembly, reducing the safety hazards caused by the operator's misoperation and extending the service life of the control mechanism. Specifically, the joystick 110 is completely located outside the storage cavity.

[0082] Preferably, the transmission assembly 200 is further connected with a damper 600, and the provision of the damper 600 makes the operator more comfortable when manually operating the manipulation assembly. Specifically, the damper 600 partially extends out of the storage cavity.

[0083] This embodiment also provides a lawn mower, comprising the above-mentioned control mechanism.

[0084] When the operator pulls the joystick 110 to rotate the rotating module clockwise, the lawn mower can move forward at a speed of 0 km / h-12 km / h. When the operator pulls the joystick 110 to rotate the rotating module counterclockwise, the lawn mower can move backward at a speed of 0 km / h-9 km / h.

[0085] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A control mechanism, suitable for a lawn mower, to control the operation of the lawn mower, characterized in that: include: A frame module, fixedly mounted on the lawn mower; A rotating module has an initial position relative to the frame module and is rotatably mounted on the frame module from the initial position, wherein a docking portion is provided on the rotating module; A potentiometer body (720) outputs a voltage signal according to the rotation state of the rotation module; A connecting bracket (430), wherein a limiting portion is provided on the connecting bracket (430), and the docking portion is adapted to the limiting portion to limit the rotation angle of the rotating module relative to the frame module; as well as A reset member installed in the frame module, when the rotating module rotates relative to the frame module from an initial position, the reset member provides a movement reset tendency for the rotating module; The connecting bracket (430) is elastically connected to the rotating module via a reset member, and when the rotating module rotates back and forth relative to the frame module, the reset member provides the rotating module with an elastic restoring force for the back and forth movement; The restoring member comprises a first elastic member (420) and a second elastic member (450), wherein the first elastic member (420) and the second elastic member (450) respectively provide elastic restoring force in a back-and-forth direction for the rotating module; A bottom plate positioning portion (830) is fixedly provided in the frame module, a bottom plate positioning hole (831) is provided on the bottom plate positioning portion (830), a first adjusting bolt (410) is screwed into the bottom plate positioning hole (831), a first hooking column (431) is provided on the connecting bracket (430), and two ends of the first elastic member (420) are respectively connected to the first adjusting bolt (410) and the first hooking column (431); a second hooking column (222) is fixedly provided on the rotating module, a bracket positioning hole (435) is provided on the connecting bracket (430), a second adjusting bolt (440) is screwed into the bracket positioning hole (435), and two ends of the second elastic member (450) are respectively connected to the second hooking column (222) and the second adjusting bolt (440); The connecting bracket (430) is provided with a first limiting hole (433) and a second limiting hole (434), wherein the limiting portion is the first limiting hole (433), the docking portion is a rotating shaft, the rotating shaft is provided with a first rolling bearing (340) on its outer sleeve, and the rotating shaft is slidably inserted into the first limiting hole (433) through the first rolling bearing (340); the frame module is provided with a bottom plate positioning shaft (840), the bottom plate positioning shaft (840) is provided with a second rolling bearing (360) on its outer sleeve, and the bottom plate positioning shaft (840) is slidably inserted into the second limiting hole (434) through the second rolling bearing (360).

2. The control mechanism according to claim 1, characterized in that: The connecting bracket (430) is elastically connected to the frame module by the first elastic member (420), and the first elastic member (420) provides an elastic restoring force to the connecting bracket (430) to synchronously drive the rotating module matched with the connecting bracket (430) to have a tendency to move along a first direction; the rotating module is elastically connected to the frame module by the second elastic member (450), and the second elastic member (450) provides an elastic restoring force to the rotating module to make the rotating module have a tendency to move along a second direction, and the first direction and the second direction are respectively the back-and-forth movement directions of the rotating module.

3. The control mechanism according to any one of claims 1 to 2, characterized in that: The frame module comprises a limiting shell (500), a mounting base plate (800) and a mounting cover (900); the mounting base plate (800) and the mounting cover (900) are arranged to form a storage cavity; the limiting shell (500) is installed in the storage cavity; the limiting shell (500) and the mounting base plate (800) are arranged to form a limiting cavity; the mounting base plate (800) is provided with a base plate clamping hole (804); and the limiting shell (500) is provided with a shell hole (501); A first frame rotating shaft (213) and a second frame rotating shaft (214) are respectively protruded on both sides of the rotating module. The axes of the first frame rotating shaft (213) and the second frame rotating shaft (214) are both located on the first axis and are both sleeved with a protective sleeve (310). The first frame rotating shaft (213) is rotatably connected to the bottom plate clamping hole (804) through the protective sleeve (310), and the second frame rotating shaft (214) is rotatably connected to the shell hole (501) through the protective sleeve (310).

4. The control mechanism according to claim 3, characterized in that: The limiting housing (500) is threaded with a first limiting bolt (510) and a second limiting bolt (520). When the rotating module rotates around the first axis, the rotating module is stopped when the rotating module abuts against the first limiting bolt (510) or the second limiting bolt (520).

5. The control mechanism according to claim 3, characterized in that: The rotation module comprises a manipulation component and a transmission component (200), the manipulation component is rotatably connected to the transmission component (200) around a second axis, the first frame rotation axis (213) and the second frame rotation axis (214) are located on the transmission component (200), and the first axis and the second axis are perpendicular to each other; The position switch body (550) is connected to the limit housing (500). When the operating assembly rotates around the second axis, the operating assembly presses against the position switch body (550), and the position switch body (550) is closed, so that the potentiometer body (720) stops running.

6. The control mechanism according to claim 5, characterized in that: The installation outer cover (900) is provided with an outer cover avoidance hole (903), and the operating assembly passes through the outer cover avoidance hole (903) and partially extends out of the storage cavity.

7. The control mechanism according to any one of claims 1-2, characterized in that: The rotating module is connected to a connecting screw (710), and a potentiometer connecting plate (721) is rotatably connected to the input shaft of the potentiometer body (720), and the potentiometer connecting plate (721) is rotatably connected to the connecting screw (710).

8. A lawn mower, characterized in that: It comprises the control mechanism described in any one of claims 1 to 7.

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