CN114190153A - Control mechanism and lawn mower - Google Patents

Abstract

The invention relates to the technical field of mowers, and particularly discloses an operating mechanism and a mower. The mechanism is suitable for a mower to control the mower to work and comprises a frame module, a rotating module, a potentiometer main body, a connecting bracket and a resetting piece; the frame module is fixedly arranged on the 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 the rotating module is provided with a butt joint part; the potentiometer main body outputs a voltage signal according to the rotation state of the rotation module; the connecting bracket is provided with a limiting part, and the butting part is matched with the limiting part so as to limit the rotating angle of the rotating module relative to the frame module; the reset piece is installed in the frame module, and when the rotating module rotates relative to the frame module from an initial position, the reset piece provides a movement reset trend for the rotating module. The design of the connecting support realizes the automatic reset of the rotating module, and avoids abnormal sound when the rotating module rotates.

Description

Control mechanism and lawn mower

Technical Field

The invention relates to the technical field of mowers, in particular to an operating mechanism and a mower.

Background

In the prior art, along with the concern of people on the environment, the greenbelt area of various cities in China is larger and larger, the variety of turf also tends to be rich, and the rapid development of the lawn industry causes the demand of people on lawn mowers to be larger and larger.

A lawn mower serves as an automatic mechanical tool for trimming lawns and vegetation. It can replace or reduce manpower, and is convenient to operate, fully saves manpower and time, realizes the beautification of the environment, so that it is widely applied. The mower needs people to continuously adjust the operating handle to maintain the running of the mower in the use process, and the appearance and effect of mowing are directly influenced by the running effect of the mower.

The manual control mechanism of the existing riding type electric mower is positioned in the middle of the whole machine and arranged on the left side and the right side of the safety seat. The control mechanism has four working states, namely a neutral position, a brake gear, a forward gear and a backward gear, and an electric element connected with the control handle is provided with a rotation position sensor and a brake switch. One of the starting conditions of the mower is that the brake switch is in a closed state, and the control handle is in a neutral position. When the left handle and the right handle are in neutral positions at the same time, the forward and backward pushing of the control handle can realize the forward and backward movement or the steering of the machine. The existing riding type electric mower has the following technical problems:

1) part of manual control mechanisms do not have self-resetting structures, and after an operator releases the control rod in an emergency, the control rod cannot be automatically reset to a middle position, so that accidents are easy to happen;

2) the manual control mechanism with the self-resetting structure has the problems that the initial force of the self-resetting structure is not adjustable, and the phenomenon of overlarge thrust of a control rod is easy to occur;

3) the manual control mechanism with the self-resetting structure is easy to generate abnormal sound in the movement process of the self-resetting structure.

Disclosure of Invention

The invention aims to provide an operating mechanism and a mower, and aims to solve the problem that the operating mechanism is difficult to reset.

In order to achieve the purpose, the invention adopts the following technical scheme:

a control mechanism is suitable for a mower to control the mower to work and comprises a frame module, a rotating module, a potentiometer main body, a connecting bracket and a resetting piece; the frame module is fixedly arranged on the 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 the rotating module is provided with a butt joint part; the potentiometer main body outputs a voltage signal according to the rotation state of the rotation module; the connecting bracket is provided with a limiting part, and the butting part is matched with the limiting part so as to limit the rotating angle of the rotating module relative to the frame module; the reset piece is installed in the frame module, and when the rotating module rotates relative to the frame module from an initial position, the reset piece provides a movement reset trend for the rotating module.

As a preferred technical solution of the control mechanism, the connecting bracket is elastically connected to the rotating module through a resetting member, and when the rotating module rotates back and forth relative to the frame module, the resetting member provides a back and forth movement elastic restoring force for the rotating module.

As a preferred technical solution of the operating 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 forces in the back-and-forth direction for the rotating module.

As a preferred technical solution of the control mechanism, the connecting bracket and the frame module are elastically connected with the first elastic element, and the first elastic element provides an elastic restoring force to the connecting bracket so as to synchronously drive the rotating module matched with the connecting bracket to have a tendency of moving along a first direction; the rotating module and the frame module are elastically connected with the second elastic piece, the second elastic piece provides elastic restoring force for the rotating module, so that the rotating module has a trend of moving along a second direction, and the first direction and the second direction are respectively the back-and-forth movement direction of the rotating module.

As a preferred technical scheme of the control mechanism, a bottom plate positioning part is fixedly arranged in the frame module, a first hooking column is arranged on the connecting support, and two ends of a first elastic piece are respectively connected with the bottom plate positioning part and the first hooking column; the rotating module is fixedly connected with a second hook column, the connecting support is provided with a support positioning part, and two ends of the second elastic piece are respectively connected with the second hook column and the support positioning part.

As a preferred technical scheme of the control mechanism, a first limiting hole and a second limiting hole are formed in the connecting support, wherein the limiting part is the first limiting hole, the butt joint part is a rotating shaft, a first rolling bearing is sleeved outside the rotating shaft, and the rotating shaft is correspondingly inserted into the first limiting hole in a sliding manner through the first rolling bearing; the frame module is provided with a bottom plate positioning shaft, a second rolling bearing is sleeved outside the bottom plate positioning shaft, and the bottom plate positioning shaft is correspondingly inserted into the second limiting hole in a sliding and penetrating mode through the second rolling bearing.

As a preferred technical scheme of the control mechanism, the frame module comprises a limiting shell, an installation bottom plate and an installation outer cover, wherein the installation bottom plate and the installation outer cover are enclosed to form an accommodating cavity, the limiting shell is installed in the accommodating cavity, the limiting shell and the installation bottom plate are enclosed to form a limiting cavity, the installation bottom plate is provided with a bottom plate clamping hole, and the limiting shell is provided with a shell hole; the both sides of rotation module are protruding first frame pivot and the second frame pivot of being equipped with respectively, first frame pivot with the axis of second frame pivot all is located first axis and all overlaps and is equipped with the lag, first frame pivot is passed through lag and bottom plate joint hole rotate to be connected, the second frame pivot is passed through the lag with the casing hole rotates to be connected.

As a preferred technical solution of the control mechanism, the limit housing is screwed with a first limit bolt and a second limit bolt, and when the rotation module rotates around the first axis, the rotation module is stopped by the rotation module and abuts against the first limit bolt or the second limit bolt.

As a preferred technical solution of the operating mechanism, the rotating module includes an operating component and a transmission component, the operating 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; the stop position switch is characterized in that a stop position switch main body is connected to the limit shell, when the operating component rotates around a second axis, the operating component is pressed against the stop position switch main body, and the stop position switch main body is closed, so that the potentiometer main body stops running.

As the preferred technical scheme of control mechanism, the installation dustcoat has seted up the dustcoat and dodges the hole, the control subassembly passes the dustcoat dodges the hole, and the part stretches out accomodate the chamber.

As the preferred technical scheme of controlling the mechanism, the rotation module is connected with a connecting screw rod, the input shaft of the potentiometer main body is connected with a potentiometer connecting plate in a rotating mode, and the potentiometer connecting plate is connected with the connecting screw rod in a rotating mode.

A lawn mower comprises the control mechanism.

The invention has the beneficial effects that:

the control mechanism can achieve the purpose of driving the potentiometer main body to output voltage signals by utilizing the rotation of the rotating module relative to the frame module. Utilize the both ends of linking bridge to connect respectively in the setting of frame module and rotation module, can draw the action that resets to rotation module with the help of elasticity, the piece that resets simultaneously provides the design that the motion resets the trend to rotation module, has played the injecing for linking bridge's removal orbit, has reduced linking bridge and has broken away from predetermined orbit and lead to the risk that rotation module can't normally reset, has ensured that rotation module's the action that resets to the neutral position can be accomplished smoothly.

Drawings

Fig. 1 is a schematic structural diagram of a control mechanism provided in an embodiment of the present invention;

fig. 2 is an exploded view of a steering mechanism provided in accordance with an embodiment of the present invention;

FIG. 3 is a schematic structural view of the control mechanism provided by the embodiment of the invention except that the mounting housing is in a neutral position;

FIG. 4 is a schematic structural diagram of the control mechanism provided by the embodiment of the invention except for the installation of the housing in the forward gear;

FIG. 5 is a front view of the steering mechanism in the forward gear, except with the mounting housing provided by the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of the control mechanism provided by the embodiment of the invention except for the installation of the housing in the reverse gear;

fig. 7 is a front view of the control mechanism provided by the embodiment of the invention except that the housing is installed in a reverse gear.

In the figure:

110. a joystick; 120. a square bar main body; 121. a square bar is fixedly connected with a bolt; 122. the square rod is fixedly connected with a nut;

200. a transmission assembly; 210. a drive frame; 211. a first frame aperture; 212. a second frame aperture; 213. a first frame rotating shaft; 214. a second frame shaft; 220. a frame plate main body; 221. a frame plate positioning hole; 222. a second hooking pole; 223. a frame plate rotating shaft; 230. a lateral limit bolt;

310. a protective sleeve; 320. an adjustment pad; 330. a gasket; 340. a first rolling bearing; 350. locking the nut; 360. a second rolling bearing;

410. a first adjusting bolt; 420. a first elastic member; 430. connecting a bracket; 431. a first hooking pole; 432. a bracket positioning portion; 433. a first limit hole; 434. a second limiting hole; 435. a bracket positioning hole; 440. a second adjusting bolt; 450. a second elastic member;

500. a limiting shell; 501. a housing bore; 510. a first limit bolt; 520. a second limit bolt; 530. a housing bending plate; 531. a bent plate through hole; 540. a station switch base; 550. a station switch main body;

600. a damper; 710. connecting a screw rod; 720. a potentiometer main body; 721. a potentiometer connecting plate; 730. a potentiometer mounting plate;

800. mounting a bottom plate; 801. a first bottom plate bending plate; 802. a second bottom plate bending plate; 803. a bottom plate avoidance hole; 804. a bottom plate clamping hole; 810. a first baseplate bolt; 820. a second baseplate bolt; 830. a base plate positioning portion; 831. a bottom plate positioning hole; 840. a base plate positioning shaft;

900. installing an outer cover; 901. a first housing positioning hole; 903. an outer cover avoidance hole; 910. and (4) an emergency stop switch.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-3, the present embodiment provides a control mechanism for a lawn mower, which is suitable for controlling the operation of the lawn mower, and comprises a frame module, a rotating module, a potentiometer main body 720, a connecting bracket 430 and a reset piece; the frame module is fixedly arranged on the 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 the rotating module is provided with a butt joint part; the potentiometer main body 720 outputs a voltage signal according to the rotation state of the rotation module; the connecting bracket 430 is provided with a limiting part, and the butt joint part is matched with the limiting part so as to limit the rotation angle of the rotating module relative to the frame module; and the reset piece is arranged in the frame module, and provides a movement reset trend for the rotating module when the rotating module rotates relative to the frame module from an initial position. Specifically, the initial position is a neutral position.

The control mechanism can drive the potentiometer main body 720 to output a voltage signal by utilizing the rotation of the rotating module relative to the frame module. Utilize the both ends of linking bridge 430 to connect respectively in the setting of frame module and rotation module, can draw the action of resetting to the rotation module with the help of elasticity, the piece that resets simultaneously provides the design that the motion resets the trend to the rotation module, has played the injecing for linking bridge 430's removal orbit, has reduced linking bridge 430 and has broken away from predetermined orbit and lead to the risk that the rotation module can't normally reset, has ensured that the action of resetting to the neutral position of rotation module can be accomplished smoothly.

Preferably, the butt joint part and the limiting part are matched in a mode that a rotating shaft is matched with a limiting hole. In this embodiment, the abutting portion is a frame plate rotating shaft 223, the limiting portion is a first limiting hole 433, and the frame plate rotating shaft 223 arranged on the rotating module is matched with the limiting hole on the connecting bracket 430; in other embodiments of this embodiment, the abutting portion is a limiting hole, the abutting portion is a rotating shaft, and the limiting hole disposed on the rotating module is adapted to the rotating shaft on the connecting bracket 430; the above design can realize the limit movement of the connecting bracket 430.

In this embodiment, the connecting bracket 430 is elastically connected to the rotating module through a reset member, and when the rotating module rotates back and forth relative to the frame module, the reset member provides a back and forth movement elastic restoring force for the rotating module. Specifically, the back-and-forth movement refers to the movement of the connecting 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.

Further, the reset member includes a first elastic member 420 and a second elastic member 450, and the first elastic member 420 and the second elastic member 450 respectively provide elastic restoring forces in the back and forth direction to the rotating module. The operation of restoring the connection bracket 430 can be effectively achieved by the design of the first and second elastic members 420 and 450.

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 for the connecting bracket 430 to synchronously drive the rotating module matched with the connecting bracket 430 to have a tendency of moving along a first direction; the second elastic member 450 is elastically connected to the rotation module and the frame module, and the second elastic member 450 provides an elastic restoring force to the rotation module, so that the rotation module has a tendency to move along a second direction, and the first direction and the second direction are the back-and-forth movement directions of the rotation module, respectively.

In other embodiments 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 rotation 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 rotation module; or the first elastic member 420 and the second elastic member 450 elastically connect the bracket 430 and the rotation module at the same time.

Preferably, the frame module is internally and fixedly provided with a base plate positioning portion 830, the connecting bracket 430 is provided with a first hooking column 431, and two ends of the first elastic member 420 are respectively connected with the base plate positioning portion 830 and the first hooking column 431; the rotating module is fixedly connected with the second hooking column 222, the connecting bracket 430 is provided with a bracket positioning portion 432, and two ends of the second elastic member 450 are respectively connected with the second hooking column 222 and the bracket positioning portion 432.

Preferably, the bottom plate positioning portion 830 is provided with a bottom plate positioning hole 831, the bottom plate positioning hole 831 is screwed with the first adjusting bolt 410, the connecting bracket 430 is fixedly connected with the first hooking column 431, the first elastic member 420 is an extension spring, one end of the extension spring is fixedly connected to the first adjusting bolt 410, and the other end of the extension spring is hooked on the first hooking column 431; the connecting bracket 430 is provided with a bracket positioning hole 435, a second adjusting bolt 440 is screwed in the bracket positioning hole 435, the second elastic member 450 is also an extension spring, one end of the extension spring is fixedly connected to the second adjusting bolt 440, and the other end is hooked on the second hooking column 222.

The connecting bracket 430 is provided with a limiting portion and a second limiting hole 434, wherein the limiting portion is a first limiting hole 433, the frame plate rotating shaft 223 is sleeved with a first rolling bearing 340, and the frame plate rotating shaft 223 is inserted in the first limiting hole 433 through the first rolling bearing 340 in a corresponding sliding manner. The frame module is provided with a bottom plate positioning shaft 840, a second rolling bearing 360 is sleeved outside the bottom plate positioning shaft 840, the bottom plate positioning shaft 840 is correspondingly inserted into the second limiting hole 434 in a sliding mode through the second rolling bearing 360, and the bottom plate positioning shaft 840 plays a role in limiting movement and displacement of the connecting support 430 relative to the frame module.

In this embodiment, the abutting portion penetrates through the first position-limiting hole 433 and can move along the length direction of the first position-limiting hole 433, and the first rolling bearing 340 is disposed in the first position-limiting hole 433; the bottom plate positioning shaft 840 penetrates through the second limiting hole 434 and can move along the length direction of the second limiting hole 434, and the second rolling bearing 360 is arranged in the second limiting hole 434. Specifically, the shapes of the first limiting hole 433 and the second limiting hole 434 can be replaced by elongated holes. In other embodiments of this embodiment, the shapes of the first limiting hole 433 and the second limiting hole 434 can be replaced by arc-shaped holes, and the purpose of limiting the connecting portion and the bottom plate positioning shaft 840 can also be achieved by selecting the arc-shaped holes.

The design that the bottom plate positioning shaft 840 penetrates through the second limiting hole 434 and the butt joint part penetrates through the first limiting hole 433 clearly ensures the limitation of the moving track of the connecting bracket 430, thereby ensuring that the resetting action of the rotating module can be smoothly completed.

And first antifriction bearing 340 has avoided setting up with second antifriction bearing 360 that the bottom plate location axle 840 and the spacing hole 434 of second and butt joint portion and first spacing hole 433 between direct support to lean on and collide, become rolling friction with sliding friction, thereby avoided the condition emergence of the abnormal sound that slides to appear in this control mechanism working process, frame plate pivot 223 has been reduced, bottom plate location axle 840 and linking bridge 430 damage risk of warping, the life of this control mechanism has been prolonged, the maintenance frequency of this control mechanism has been reduced.

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

Specifically, when an operator pulls the rotating module to rotate the rotating module counterclockwise, the rotating module drives the connecting bracket 430 to stretch the first elastic member 420, and after the operator releases the rotating module, the first elastic member 420 retracts due to elasticity, so that the connecting bracket 430 and the rotating module are driven to reset; when the operator pulls the rotation module to rotate the rotation module clockwise, the rotation module drives the connection bracket 430, so that the second elastic member 450 is stretched, and after the operator releases the rotation module, the second elastic member 450 retracts due to elasticity, so that the connection bracket 430 and the rotation module are driven to reset.

Through the design that one end of the first adjusting bolt 410 is fixedly connected with the first elastic member 420 and the other end is screwed on the bottom plate positioning portion 830, an 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 portion 830, so that the rotating module at any position can accurately complete the resetting action. The above effect is also embodied in the second adjusting bolt 440, and 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 portion 432. The design enables the reset position of the rotating module to be adjustable, the accuracy of the reset action of the rotating module is greatly improved, the control mechanism which causes the reset position to deviate due to slight damage or deformation can still stably run for a long time after being adjusted by an operator, and the service life of the control mechanism is greatly prolonged through the structural improvement. The design optimizes the stress 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.

Specifically, the cross-sectional diameter of the tension spring is 2 mm, and the material is 65 Mn. The first adjusting bolt 410 and the second adjusting bolt 440 are hexagon bolts with elastic flat pads.

Further, the frame module comprises a limiting shell 500, a mounting base plate 800 and a mounting outer cover 900, the mounting base plate 800 and the mounting outer cover 900 are surrounded to form a containing cavity, the limiting shell 500 is mounted in the containing cavity, the limiting shell 500 and the mounting base plate 800 are surrounded 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; the two sides of the rotating module are respectively convexly provided with a first frame rotating shaft 213 and a second frame rotating shaft 214, 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 all sleeved with a protecting sleeve 310, the first frame rotating shaft 213 is rotatably connected with the bottom plate clamping hole 804 through the protecting sleeve 310, and the second frame rotating shaft 214 is rotatably connected with the shell hole 501 through the protecting sleeve 310. The design of the first frame rotating shaft 213 and the second frame rotating shaft 214 ensures that the design of the rotating module rotating around the first axis relative to the frame module can be realized, the arrangement of the installation bottom plate 800, the installation outer cover 900 and the limiting shell 500 protects the internal components of the control mechanism, and the influence of the external environment on the control mechanism is greatly reduced. The protective sleeve 310 has the effect of a sliding bearing, and the abrasion of the limiting shell 500, the mounting base plate 800, the first frame rotating shaft 213 and the second frame rotating shaft 214 in the working process is greatly reduced, so that the service life of the control mechanism is prolonged. Specifically, the material of the protective sleeve 310 is high-force brass, and lubricating oil is coated on both the inner side wall and the outer side wall of the protective sleeve 310; the material of the spacing housing 500 is Q235.

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

Preferably, the second frame shaft 214 is further sleeved with an adjusting pad 320, and the adjusting pad 320 is attached to the protecting sleeve 310 on the second frame shaft 214. The adjusting pad 320 is used for adjusting the relative position of the protecting sleeve 310 with the second frame rotating shaft 214 and the limiting shell 500. The provision of the adjustment pad 320 can remove the harmful shaking amount assembled in the first axial direction, thereby improving the stability of manipulation.

In this embodiment, the edge of the limiting casing 500 is fixedly connected with the casing bending plate 530, the casing bending plate 530 is attached to the mounting base plate 800, the casing bending plate 530 is provided with a bending plate through hole 531, and the first assembling bolt passes through the bending plate through hole 531 and is screwed to the mounting base plate 800. The arrangement of the limiting housing 500 ensures that the rotating module works smoothly without receiving significant resistance.

Furthermore, the washers 330 are arranged on both sides of the first rolling bearing 340 and the second rolling bearing 360, and the locking nuts 350 are screwed on the butt joint part and the bottom plate positioning shaft 840; the lock nut 350 screwed to the docking portion is used to limit the displacement of the first rolling bearing 340 along the length direction of the docking portion, and the lock nut 350 screwed to the bottom plate positioning shaft 840 is used to limit the displacement of the second rolling bearing 360 along the length direction of the bottom plate positioning shaft 840.

Preferably, the butt joint part is sequentially sleeved with a gasket 330, a first rolling bearing 340 and the gasket 330 and is in threaded connection with a locking nut 350; the bottom plate positioning shaft 840 is sleeved with a gasket 330, a second rolling bearing 360 and the gasket 330 in sequence and is in threaded connection with the locking nut 350.

The design of the gasket 330 avoids direct rigid contact and collision between the first rolling bearing 340 and the second rolling bearing 360 and other components in the axial direction, and prolongs the service life of the first rolling bearing 340 and the second rolling bearing 360. The arrangement of the lock nut 350 limits the axial displacement of the first rolling bearing 340 and the second rolling bearing 360, so that the first rolling bearing 340 can be always located in the first limiting hole 433, and the second rolling bearing 360 can be always located in the second limiting hole 434.

Specifically, the lock nut 350 is a hexagon nut, the washer 330 is made of Q235, and the first rolling bearing 340 and the second rolling bearing 360 are both deep groove ball bearings.

As shown in fig. 1 to 7, preferably, the limit housing 500 is screwed with a first limit bolt 510 and a second limit bolt 520, and when the rotation module rotates around the first axis, the rotation module is stopped by the rotation module and abuts against the first limit bolt 510 or the second limit bolt 520. With the above arrangement, the limitation of the rotation range of the rotation module can be effectively realized, and the voltage signal output by the potentiometer main body 720 is ensured to be within the predetermined threshold range. Specifically, when the rotating module rotates clockwise around the first axis, i.e. is located at the back gear, the rotating module abuts against the first limit bolt 510; when the rotating module rotates counterclockwise around the first axis, i.e. is located at the forward gear, the rotating module abuts against the second limit bolt 520. In the present embodiment, the rotation module rotates clockwise around the first axis by 12 °, and the rotation module rotates clockwise around the first axis by 16 °, although other angles may be used for setting, and all of them are within the protection scope of the present invention.

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

Specifically, one end of the connecting screw 710 is rotatably connected to one end of the potentiometer connecting plate 721 remote from the input shaft of the potentiometer main body 720, and the other end of the connecting screw 710 is screwed by a second assembling bolt passing through the frame plate positioning hole 221; the connecting screw rod 710 is a retractable piece, and the distance between the two ends of the connecting screw rod 710 is adjustable. The design facilitates the adjustment of the relation between the rotation angle of the rotation module and the output voltage signal of the potentiometer main body 720 by operators, and improves the working flexibility of the control mechanism.

Preferably, the potentiometer main body 720 is mounted on the potentiometer mounting plate 730, and the potentiometer mounting plate 730 is screwed to the mounting base plate 800. When the rotating module rotates, the connecting screw rod 710 drives the input shaft of the potentiometer main body 720 to rotate, and the function of outputting a direction instruction and a speed instruction by the control mechanism is realized through the clockwise 16-anticlockwise 12-degree rotating range. Specifically, the material of the potentiometer mounting plate 730 is Q235.

In this embodiment, the rotating module includes a manipulating component and a transmission component 200, the manipulating component is rotatably connected to the transmission component 200 around a second axis, the first frame rotating shaft 213 and the second frame rotating shaft 214 are located on the transmission component 200, and the first axis and the second axis are perpendicular to each other; the limit housing 500 is connected with a main body 550 of the position switch, when the operating component rotates around the second axis, the operating component is pressed against the main body 550 of the position switch, the main body 550 of the position switch is closed, and the main body 720 of the potentiometer stops operating. Specifically, the main body 550 of the station switch is communicatively connected to the main body 720 of the potentiometer, the main body 550 of the station switch is fixedly connected to the base 540 of the station switch, the base 540 of the station switch is screwed to the mounting plate 730 of the potentiometer, and the base 540 of the station switch is made of Q235.

Through the arrangement, the potentiometer main body 720 can output a brake instruction to external equipment, and meanwhile, the control assembly can be limited, so that the transmission assembly 200 is prevented from continuously rotating around the first axis, and the design is simple and reliable, small in occupied space and simple and convenient to operate.

Preferably, the mounting cover 900 is further provided with an emergency stop switch 910, and pressing down the emergency stop switch 910 can press the emergency stop switch 910 against the main body 550 of the standing switch to stop the operation of the main body 720 of the potentiometer. The arrangement provides a means for outputting a braking instruction to external equipment, the problem that the control mechanism cannot brake rapidly can be solved, and the use safety of the control mechanism is further improved.

In this embodiment, the operating assembly includes an operating lever 110 and a square bar body 120, the operating lever 110 is screwed on the square bar body 120, and the square bar body 120 is rotatably connected with the transmission assembly 200. The arrangement of the operating rod 110 is convenient for operators to hold, and humanized improvement on the control mechanism is realized. Specifically, the material of the square bar body 120 is Q235.

Further, the transmission assembly 200 is connected to the frame plate main body 220, the frame plate main body 220 extends in a direction away from the manipulation assembly, the second hooking pole 222 and the butt joint portion are both disposed on the frame plate main body 220, and the potentiometer main body 720 is connected to the rotation module on the frame plate main body 220. Specifically, the frame plate body 220 is attached to the transmission assembly 200.

Preferably, the transmission assembly 200 further includes a transmission frame 210, the frame plate main body 220 is fixedly connected to one side of the transmission frame 210 far away from the operation assembly, the transmission frame 210 is provided with a first frame hole 211 and a second frame hole 212, the square bar main body 120 is screwed with a square bar fixing bolt 121 and a square bar fixing nut 122, the square bar fixing bolt 121 is arranged in the first frame hole 211 in a penetrating manner, the square bar fixing nut 122 is arranged in the second frame hole 212 in a penetrating manner, and the square bar fixing bolt 121 and the square bar fixing nut 122 are both extended along the direction of the second axis. Through the above structure, the rotational connection of the square pole main body 120 and the transmission frame 210 is achieved.

Specifically, the square bar fixedly connecting bolt 121 and the square bar fixedly connecting nut 122 are both sleeved with a gasket, and the gasket is made of Q235.

In this embodiment, the lateral limiting bolt 230 is further screwed on the side surface of the transmission frame 210, the mounting base plate 800 is further provided with a base plate avoiding hole 803, the base plate avoiding hole 803 is an arc-shaped hole circumferentially arranged along the first axis, and the lateral limiting bolt 230 partially extends out of the accommodating cavity through the base plate avoiding hole 803. The arrangement improves the limiting effect on the transmission frame 210, ensures that the rotating module can work smoothly, and the lateral limiting bolt 230 is an M8 multiplied by 40 hexagon bolt.

Preferably, the mounting housing 900 is provided with a housing clearance hole 903, and the operation component passes through the housing clearance hole 903 and partially extends out of the receiving cavity. The setting of hole 903 is kept away to the dustcoat has played the effect of spacing manipulation subassembly, has reduced the potential safety hazard because of operating personnel maloperation brings, has prolonged the life of controlling the mechanism. Specifically, the lever 110 is located entirely outside the receiving cavity.

Preferably, a damper 600 is further coupled to the transmission assembly 200, and the damper 600 is provided to make the operator more comfortable when manually operating the steering assembly. Specifically, the damper 600 partially protrudes out of the receiving cavity.

The embodiment also provides a mower comprising the control mechanism.

The mower can advance at a speed of 0 km/hr to 12 km/hr when the operator pulls the lever 110 to rotate the rotating module clockwise, and retreat at a speed of 0 km/hr to 9 km/hr when the operator pulls the lever 110 to rotate the rotating module counterclockwise.

It should be understood that the above-described 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. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (12)

1. A control mechanism for a lawn mower to control operation of the lawn mower, comprising:

a frame module fixedly mounted on the 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 the rotating module is provided with a butt joint part;

a potentiometer main body (720) that outputs a voltage signal according to a rotation state of the rotation module;

the connecting bracket (430) is provided with a limiting part, and the butting part is matched with the limiting part so as to limit the rotating angle of the rotating module relative to the frame module; and

the reset piece is installed in the frame module, and when the rotating module rotates relative to the frame module from an initial position, the reset piece provides a movement reset trend for the rotating module.

2. The operating mechanism as claimed in claim 1, wherein the connecting bracket (430) is elastically connected to the rotating module via a restoring member, and the restoring member provides an elastic restoring force for the rotating module to move back and forth when the rotating module rotates back and forth relative to the frame module.

3. The manipulation mechanism of claim 2, wherein the restoring member comprises a first elastic member (420) and a second elastic member (450), and the first elastic member (420) and the second elastic member (450) respectively provide the rotating module with elastic restoring forces in the back and forth direction.

4. The control mechanism according to claim 3, wherein the first elastic member (420) is elastically connected to the connecting bracket (430) and the frame module, 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 the second elastic piece (450), the second elastic piece (450) provides elastic restoring force for the rotating module, so that the rotating module has a trend of moving along a second direction, and the first direction and the second direction are respectively the back-and-forth movement direction of the rotating module.

5. The control mechanism according to claim 4, wherein a base plate positioning portion (830) is fixedly arranged in the frame module, a first hooking column (431) is arranged on the connecting bracket (430), and two ends of the first elastic member (420) are respectively connected with the base plate positioning portion (830) and the first hooking column (431); the rotating module is fixedly connected with a second hook hanging column (222), a support positioning part (432) is arranged on the connecting support (430), and two ends of a second elastic piece (450) are respectively connected with the second hook hanging column (222) and the support positioning part (432).

6. The control mechanism according to any one of claims 2 to 5, wherein 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 abutting portion is a rotating shaft, the rotating shaft is sleeved with a first rolling bearing (340), and the rotating shaft is correspondingly inserted into the first limiting hole (433) in a sliding manner through the first rolling bearing (340); the frame module is provided with a bottom plate positioning shaft (840), a second rolling bearing (360) is sleeved outside the bottom plate positioning shaft (840), and the bottom plate positioning shaft (840) is correspondingly inserted into the second limiting hole (434) in a sliding and penetrating mode through the second rolling bearing (360).

7. The control mechanism according to any one of claims 1 to 5, wherein the frame module comprises a limiting shell (500), a mounting base plate (800) and a mounting outer cover (900), the mounting base plate (800) and the mounting outer cover (900) are enclosed to form a receiving cavity, the limiting shell (500) is mounted in the receiving cavity, the limiting shell (500) and the mounting base plate (800) are enclosed 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);

rotate the both sides of module and convexly be equipped with first frame pivot (213) and second frame pivot (214) respectively, first frame pivot (213) with the axis of second frame pivot (214) all is located the primary shaft and all is equipped with lag (310) by the cover, first frame pivot (213) are passed through lag (310) are rotated with bottom plate joint hole (804) and are connected, second frame pivot (214) are passed through lag (310) with casing hole (501) are rotated and are connected.

8. The operating mechanism according to claim 7, wherein the limiting housing (500) is screwed with a first limiting bolt (510) and a second limiting bolt (520), and when the rotating module rotates around the first axis, the rotating module is stopped by the rotating module and abuts against the first limiting bolt (510) or the second limiting bolt (520).

9. The steering mechanism according to claim 7, wherein the rotating module comprises a steering assembly and a transmission assembly (200), the steering assembly is rotatably connected to the transmission assembly (200) around a second axis, the first frame rotating shaft (213) and the second frame rotating shaft (214) are located on the transmission assembly (200), and the first axis and the second axis are perpendicular to each other;

the limiting shell (500) is connected with a standing switch main body (550), when the operating component rotates around a second axis, the operating component is pressed against the standing switch main body (550), the standing switch main body (550) is closed, and the potentiometer main body (720) stops running.

10. The control mechanism according to claim 9, wherein the mounting housing (900) is provided with a housing avoiding hole (903), and the control component passes through the housing avoiding hole (903) and partially extends out of the receiving cavity.

11. The control mechanism according to any one of claims 1 to 5, wherein a connecting screw (710) is connected to the rotating module, a potentiometer connecting plate (721) is rotatably connected to the input shaft of the potentiometer main body (720), and the potentiometer connecting plate (721) is rotatably connected to the connecting screw (710).

12. A lawnmower comprising the steering mechanism according to any one of claims 1 to 11.

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