CN220875120U - Height-adjustable structure of hand-push mower - Google Patents

Abstract

The utility model discloses a height-adjustable structure of a hand-push mower, which comprises a mower main body, wherein the mower main body is provided with a front wheel assembly, a rear wheel assembly and a height adjusting assembly, the height adjusting assembly comprises a locking piece and a gear shifting piece, the front wheel assembly is in transmission connection with the gear shifting piece, the rear wheel assembly is in transmission connection with the gear shifting piece through a transmission assembly, and the locking piece is matched with the gear shifting piece to adjust the ground clearance of the mower main body; the mower main body is provided with an adjusting piece, one end of the adjusting piece is connected with the locking piece, and the other end of the adjusting piece is rotatably connected to the mower main body. The utility model has the following advantages and effects: the novel mechanical structure is utilized in the scheme, and the mower main body has the effects of adjustable ground clearance and convenience in adjustment.

Description

Height-adjustable structure of hand-push mower

Technical Field

The utility model relates to the technical field of mowers, in particular to a height-adjustable structure of a hand-push type mower.

Background

The mower is also called a weeding machine, a lawn trimmer and the like, is a common mechanical tool for trimming lawns, vegetation and the like, can greatly save the working time of operators, reduces a large amount of manpower resources, and is widely used by people.

The prior art patent with the publication number of CN210183900U discloses a height-adjusting mower, which comprises an upper shell, a lower shell, a roller, a rotating shaft for the roller to be installed and a height-adjusting assembly installed in a mower main body, wherein the height-adjusting assembly comprises a gear-adjusting limiting pull rod and a gear-adjusting piece, the side wall of the gear-adjusting limiting pull rod is provided with a positioning shaft, the side wall of the gear-adjusting piece is horizontally provided with an installation through hole, the top of the installation through hole is provided with a plurality of positioning through holes for the positioning shaft to be embedded at intervals along the top edge of the installation through hole, two ends of the rotating shaft are provided with extension rods mutually perpendicular to the rotating shaft and installation shafts for the roller to be installed, one end of the gear-adjusting piece is installed with the installation shaft, the other end of the gear-adjusting piece is rotatably installed with the positioning shaft, the roller comprises a front wheel installed on the front side of the mower and a rear wheel installed on the rear side of the mower, the side wall of the front wheel on the same side as the rear wheel provided with the gear-adjusting piece is provided with a mounting piece, a connecting rod is installed between the mounting piece and the gear-adjusting piece, one end of the connecting rod is installed between the rotating shaft and the rotating shaft, and one side of the mounting piece is installed between the rotating shaft and the front wheel; the top of the gear-shifting limiting pull rod is provided with an adjusting button, the adjusting button is fixed with the top of the gear-shifting limiting pull rod, a compression spring is sleeved on the outer side of the gear-shifting limiting pull rod, one end of the compression spring is grounded with the adjusting button, and the other end of the compression spring is abutted with the upper shell.

However, the mower has the following disadvantages: this lawn mower need be through pressing adjusting button when using, adjusting button drives spacing pull rod and pushes down for the locating shaft loosens from in the location through-hole, then drives the gear shifting piece through stepping on the gyro wheel and rotate and carry out altitude mixture control, makes the locating shaft can move in the installation through-hole, when adjusting to required height, resets the spacing pull rod of gear shifting, thereby makes the locating shaft joint again realize the location of lawn mower at new height in the location through-hole, but this process needs adjusting button to keep at the state of pressing all the time, the operation is more laborious.

Disclosure of utility model

The utility model aims to provide a height-adjustable structure of a hand-push mower, which has the effects of adjustable distance between a mower main body and the ground and convenience in adjustment.

The technical aim of the utility model is realized by the following technical scheme: the utility model provides a height-adjustable structure of hand propelled mower, includes the mower main part, the mower main part is equipped with front wheel subassembly, rear wheel subassembly and altitude mixture control subassembly, altitude mixture control subassembly includes locking piece and fender piece, between front wheel subassembly with the fender piece is adjusted, rear wheel subassembly with adjust through drive assembly transmission connection between the fender piece, locking piece with adjust the cooperation of fender piece in order to adjust the ground clearance of mower main part; the mower main body is provided with an adjusting piece, one end of the adjusting piece is connected with the locking piece, and the other end of the adjusting piece is rotatably connected with the mower main body.

Through adopting above-mentioned technical scheme, when the clearance that leaves of mower is adjusted to needs, through holding the regulating part, make the regulating part rotate relative mower main part, simultaneously the regulating part drives the relative shift piece of locking piece and moves to the unblock state, adjust the position of shift piece this moment, the shift piece passes through drive assembly and drives the altitude mixture control of front wheel subassembly and rear wheel subassembly relative mower main part, when the altitude mixture control of mower main part leaves the ground to the preset position, get rid of the holding power to the regulating part, the regulating part effect locking piece is again with shift piece keeps the locking state, thereby realize the altitude mixture control to mower main part, it is adjustable to have mower main part clearance that leaves the ground, adjust convenient effect.

The utility model is further provided with: the mower main body is fixedly provided with a handle, the locking piece is movably arranged on the handle, and the adjusting piece is rotatably connected with the handle.

Through adopting above-mentioned technical scheme, the operator can utilize the finger to exert a force and press the regulating part relative to the handle through holding the handle, makes the regulating part rotate and be close to the handle, drives the locking piece and keeps away from the shifting piece.

The utility model is further provided with: the locking piece comprises a sliding part and a locking part, the locking part is matched with the gear shifting piece in an adjusting mode, the handle is provided with a sliding cavity and an accommodating cavity which are communicated with each other, the sliding part movably penetrates through the sliding cavity, and the adjusting piece is rotationally arranged on the handle and is matched with the accommodating cavity in an avoidance mode.

By adopting the technical scheme, when the handle is held, the adjusting piece rotates in the accommodating cavity relative to the handle and enables the sliding part to gradually go deep into the sliding cavity, and the sliding part drives the locking part to be upwards far away from the gear shifting piece for unlocking, so that the gear of the gear shifting piece can be adjusted, the adjusting piece always rotates in the accommodating cavity for adjustment, and the sliding part of the locking piece always slides up and down in the sliding cavity, so that the integral attractive appearance and the integral integrity of the utility model are improved.

The utility model is further provided with: the handle is provided with a limit groove, the limit groove is communicated with the accommodating cavity, the adjusting piece is provided with a stop part, and the stop part is matched with the limit groove in a limit stop mode.

By adopting the technical scheme, the rotation angle of the adjusting piece can be limited, the situation that the locking piece is excessively dropped by the adjusting piece to cause the locking of the component is prevented, and the service life of the device is prolonged.

The utility model is further provided with: the gear shifting piece is rotationally connected to the mower main body through a rotating shaft, a plurality of lock holes are circumferentially formed in the gear shifting piece by taking the rotating shaft as the center, a plurality of lock holes are communicated through arc-shaped grooves, the locking part is in sliding fit with the arc-shaped grooves, and the locking part is in locking fit with the lock holes.

Through adopting above-mentioned technical scheme, the movable stopper is rotated relative to the mower main part through the axis of rotation, make the high position of lockhole relative to the axis of rotation on the stopper change simultaneously, drive the locking piece through pressing the regulating part and keep away from the lockhole, rotate the stopper simultaneously, the relative position that the stopper passed through drive assembly drive front wheel subassembly and rear wheel subassembly relative to the mower main part carries out the altitude mixture control, until the lockhole that predetermined height corresponds rotates to the position that aligns with the locking piece, then loosen the holding power to the regulating part, the regulating part drives the locking piece and descends and lock the cooperation with the lockhole that aligns on the stopper, at this moment drive assembly is locked and is guaranteed that the ground clearance of mower main part remains unchanged, so circulation, the ground clearance adjustment of mower main part of this utility model can be accomplished.

The utility model is further provided with: the top of the gear shifting piece is provided with a gear mark corresponding to each lock hole, and the mower main body is provided with a visible hole for observing the gear mark.

Through adopting above-mentioned technical scheme, thereby the fender piece is rotated through the axis of rotation and is carried out the fender and adjust, thereby the operator can observe the fender sign that the fender piece top corresponds through visual hole, makes the operator can read the ground clearance that mower main part was adjusted.

The utility model is further provided with: an elastic piece is arranged between the adjusting piece and the locking piece, and the elastic piece always has a movement trend of driving the locking part to be in locking fit with the locking hole of the gear shifting piece.

Through adopting above-mentioned technical scheme, when handheld handle, hold the pressure rotation relatively to the handle through the finger force with the regulating part, drive the locking piece and carry out unblock gear shifting relatively to the gear shifting piece, this process elastic component accumulation elastic potential energy, after removing the holding power to the regulating part of hand, the elastic component releases self elastic potential energy and promotes the regulating part and reset to initial state, drive simultaneously and be in the locking position with the gear shifting piece, prevent to rely on the gravity of regulating part and locking piece alone to lead to the gear to adjust the completion, the condition that the locking piece can't reset fast and carry out locking cooperation with the gear shifting piece, the setting of elastic component can make the gear shifting end, when getting rid of the pressure to the gear shifting piece, the elastic component can rely on self elastic potential energy, reset the state that makes locking piece and gear shifting piece lock fast.

The utility model is further provided with: the elastic piece is set as a reset spring, the reset spring is movably arranged in the sliding cavity in a penetrating mode and sleeved outside the locking piece, one end of the reset spring is fixedly connected with the adjusting piece, and the other end of the reset spring is fixedly connected with the handle.

Through adopting above-mentioned technical scheme, when holding the handle, press the rotation with the regulation piece relative to the handle through the finger force, the regulation piece drives locking piece upward movement, and reset spring is in tensile state this moment, and after the finger got rid of the pressing force of regulation piece, the reset spring shrink that is in tensile state resets to drive locking piece and slide down in the intracavity that slides, make locking piece and gear shifting piece locking cooperation.

The utility model is further provided with: the transmission assembly comprises a front transmission rod, a rear transmission rod and a connecting piece, one end of the front transmission rod is in transmission connection with the front wheel assembly through a connecting piece, the other end of the front transmission rod is rotationally connected with the gear shifting piece, one end of the rear transmission rod is in transmission connection with the rear wheel assembly through another connecting piece, and the other end of the rear transmission rod is rotationally connected with the gear shifting piece.

By adopting the technical scheme, when the gear is regulated by the gear regulating piece, the front transmission rod and the rear transmission rod are driven by the double rods, so that the front transmission rod can independently regulate the height of the front wheel assembly relative to the mower main body, and the rear transmission rod independently regulates the height of the rear wheel assembly relative to the mower main body.

The utility model is further provided with: the gear shifting piece is rotationally connected to the mower main body through a rotating shaft, a tension spring is connected between the front transmission rod and the rotating shaft, a notch is formed in the middle of the front transmission rod, the clamping foot at one end of the tension spring is clamped to the notch, and the clamping foot at the other end of the tension spring is clamped to the rotating shaft.

By adopting the technical scheme, different gears on the gear shifting piece correspond to different ground clearance heights of the mower main body, when the mower main body is positioned at the highest ground clearance, the locking piece is positioned at the highest gear of the gear shifting piece, and the stretching length of the tension spring is shortest at the moment, so that the locking piece is required to be locked at the highest gear for assembly of the tension spring during assembly; when the gear is required to be adjusted from a lower gear to a higher gear, an operator can stabilize the mower main body and press the adjusting piece to enable the locking piece and the gear shifting piece to be in an unlocking state, the front transmission rod is pulled to move towards the rear wheel assembly by the pulling force of the tension spring, the front transmission rod drives the gear shifting piece to rotate clockwise, after the mower main body is adjusted to a preset height, the pressing force of the adjusting piece is removed, the adjusting piece drives the locking piece and the adjusting seat to be in the locking state, the ground clearance of the mower main body is kept constant at the moment, the height adjustment of the mower main body can be achieved without the need of the operator to downwards step on the rear wheel assembly, and the operation is convenient for releasing two feet.

In summary, the utility model has the following beneficial effects:

1. The handle is arranged on the mower main body, the adjusting piece is rotatably arranged on the handle, one end of the adjusting piece is connected with the locking piece, the locking part of the locking piece stretches into the mower main body and is in locking fit with the locking hole of the gear shifting piece, the gear shifting piece is provided with a chute communicated with a plurality of locking holes along the center of the rotating shaft of the gear shifting piece, the handle is held by the handle, the adjusting piece is pressed by fingers to rotate relative to the handle, the locking part of the locking piece is driven to be away from the locking hole, then the gear shifting piece is subjected to gear shifting, the gear shifting piece drives the ground clearance of the mower main body to change through the transmission assembly, the locking part slides in the chute during gear shifting, after the mower main body is regulated to a preset ground clearance, the pressing force of the adjusting piece is removed, and the locking piece is rapidly matched with the locking hole of the gear shifting piece under the action of the reset spring, so that the ground clearance of the mower main body is kept consistent, and the cycle is realized, and the ground clearance of the mower main body is adjustable and convenient to adjust.

2. The transmission assembly is divided into the front transmission rod and the rear transmission rod which rotate independently, so that the front transmission rod and the rear transmission rod can rotate independently relative to the gear shifting piece, the transmission assembly is not easy to damage and has long service life, and meanwhile, the running stability of the transmission assembly can be improved.

3. The gear shifting piece is rotationally connected to the mower main body through the rotating shaft, a notch is formed in the middle of the front transmission rod, the clamping foot of the tension spring is clamped in the notch, the other clamping foot of the tension spring is clamped in the rotating shaft, and when the gear shifting piece is adjusted to a high gear from a low gear, the rear wheel assembly can achieve an automatic keeping away effect relative to the mower main body through the pulling force of the tension spring, and the mower is convenient to adjust.

4. The visual hole and the gear mark are arranged, so that the effect that an operator can accurately adjust the height of the utility model is improved.

Drawings

Fig. 1 is an overall structural view of a first embodiment of the present utility model.

Fig. 2 is an enlarged view of a portion of the area a of fig. 1 in accordance with the present utility model.

Fig. 3 is an internal structural view of a first embodiment of the present utility model.

Fig. 4 is an enlarged view of a portion of the area B of fig. 3 in accordance with the present utility model.

Fig. 5 is an internal connection diagram of a lock state of a lock member and a shift member according to a first embodiment of the present utility model.

Fig. 6 is an internal connection diagram of the lock member and the shift member in the unlock state according to the first embodiment of the present utility model.

Fig. 7 is an internal connection diagram of a first embodiment of the present utility model.

Fig. 8 is an exploded view of a front wheel assembly, a rear wheel assembly, a shift block and a grip according to an embodiment of the present utility model.

Fig. 9 is an exploded view of a rear wheel assembly in accordance with an embodiment of the present utility model.

Fig. 10 is an internal connection diagram of a second embodiment of the present utility model.

In the figure: 1. a mower body; 1a, a visual hole; 11. a connecting piece; 12. a tension spring; 21. a front transmission rod; 21a, notch; 31. a rear drive rod; 4. a grip; 4a, a sliding cavity; 4b, a containing cavity; 4c, a limit groove; 41. an adjusting member; 411. a stop portion; 42. a locking member; 421. a locking part; 422. a sliding part; 43. an elastic member; 5. a gear shifting piece; 5a, a lock hole; 5b, arc-shaped grooves; 51. a rotating shaft; 52. a gear mark; 53. a positioning pin; 61. a first rotation shaft; 611. a front wheel; 62. a second rotation shaft; 620. an output gear; 621. a rear wheel; 6211. an inner gear ring; 622. a dust cover; 63. an extension rod; 631. a front wheel mounting shaft; 632. a rear wheel mounting shaft; 7. a driving motor; 71. a gear assembly; 8. a connecting rod; 81. a connecting piece; 81a, a rotation hole.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Detailed description of the preferred embodiments

1-6, The height-adjustable structure of the hand-push mower comprises a mower main body 1, wherein the mower main body 1 is provided with a front wheel assembly, a rear wheel assembly and a height-adjusting assembly, the height-adjusting assembly comprises a locking piece 42 and a gear shifting piece 5, the front wheel assembly is in transmission connection with the gear shifting piece 5, and the rear wheel assembly is in transmission connection with the gear shifting piece 5 through a transmission assembly, and the locking piece 42 is matched with the gear shifting piece 5 to adjust the ground clearance of the mower main body 1; the mower main body 1 is provided with an adjusting piece 41, one end of the adjusting piece 41 is connected with a locking piece 42, and the other end of the adjusting piece 41 is rotatably connected with the mower main body 1; the mower main body 1 is fixedly provided with a handle 4, the locking piece 42 is movably arranged on the handle 4, one end of the adjusting piece 41, which is far away from the locking piece 42, is rotationally connected to the handle 4, and an operator can press the adjusting piece 41 relative to the handle 4 by using finger force by holding the handle 4, so that the adjusting piece 41 rotates and approaches the handle 4 to drive the locking piece 42 to be far away from the gear shifting piece 5; the locking piece 42 comprises a sliding part 422 and a locking part 421, the locking part 421 is in adjustment fit with the gear shifting piece 5, the handle 4 is provided with a sliding cavity 4a and a containing cavity 4b which are communicated, the sliding part 422 movably penetrates through the sliding cavity 4a, the adjusting piece 41 is rotatably arranged on the handle 4 and is in avoidance fit with the containing cavity 4b, when the handle 4 is held, the adjusting piece 41 rotates in the containing cavity 4b relative to the handle 4 and enables the sliding part 422 to gradually penetrate into the sliding cavity 4a, the sliding part 422 drives the locking part 421 to be upwards far away from the gear shifting piece 5 for unlocking, so that the gear of the gear shifting piece 5 can be adjusted, the adjusting piece 41 always rotates and adjusts in the containing cavity 4b, and the sliding part 422 of the locking piece 42 always slides up and down in the sliding cavity 4a, so that the integral aesthetic degree and the integral integrity of the utility model are improved; the handle 4 is provided with the limit groove 4c, the limit groove 4c is communicated with the accommodating cavity 4b, the regulating piece 41 is provided with the stop part 411, the stop part 411 is in limit stop fit with the limit groove 4c, the rotation angle of the regulating piece 41 can be limited, the condition that the regulating piece 41 drives the locking piece 42 to excessively fall to cause the blocking of the parts is prevented, and the service life of the regulating piece is prolonged.

As shown in fig. 4-8, the gear 5 is rotatably connected to the mower body 1 through the rotation shaft 51, a plurality of lock holes 5a are circumferentially formed in the gear 5 by taking the rotation shaft 51 as the center, the plurality of lock holes 5a are circumferentially distributed by taking the rotation shaft 51, gaps between adjacent lock holes 5a in a direction from a high gear to a low gear are sequentially increased, the plurality of lock holes 5a are communicated through an arc groove 5b, the locking part 421 is in sliding fit with the arc groove 5b, the locking part 421 is in locking fit with the lock holes 5a, the gear 5 can rotate relative to the mower body 1 through the rotation shaft 51, meanwhile, the lock holes 5a on the gear 5 are enabled to change relative to the height position of the rotation shaft 51, the gear 42 is driven to be far away from the lock holes 5a through pressing the adjusting part 41, meanwhile, the gear 5 drives relative positions of the front wheel assembly and the rear wheel assembly relative to the mower body 1 through the transmission assembly until the lock holes 5a corresponding to the preset heights are rotated to positions aligned with the lock holes 42, then the retaining force of the adjusting part 41 is released, the lock holes 41 are driven to move downwards and are aligned with the lock holes 5a, and the mower body 1 is kept in the gap between the gear 1 and the mower body is locked, and the distance between the gear 1 and the mower body is kept unchanged.

As shown in fig. 1-2 and fig. 5-8, a gear mark 52 is arranged at the top of the gear shifting piece 5 corresponding to each lock hole 5a, a visible hole 1a for observing the gear mark 52 is formed in the mower main body 1, and when the gear shifting piece 5 rotates through the rotating shaft 51 to perform gear adjustment, an operator can observe the gear mark 52 corresponding to the top of the gear shifting piece 5 through the visible hole 1a, so that the operator can read the ground clearance adjusted by the mower main body 1; the elastic piece 43 is arranged between the adjusting piece 41 and the handle 4, the elastic piece 43 always has a movement trend of driving the locking part 421 to be in locking fit with the lock hole 5a of the gear shifting piece 5, when the handle 4 is held by hand, the adjusting piece 41 is held and pressed by finger force to rotate relative to the handle 4, the locking piece 42 is driven to unlock the gear shifting piece 5, elastic potential energy is accumulated by the elastic piece 43 in the process, after the holding force of the hand to the adjusting piece 41 is removed, the elastic piece 43 releases the elastic potential energy and pushes the adjusting piece 41 to reset to an initial state, meanwhile, the locking piece 42 and the gear shifting piece 5 are driven to be in a locking position, and the situation that the gear shifting piece 42 cannot be quickly reset and is in locking fit with the gear shifting piece 5 when the gravity of the adjusting piece 41 and the locking piece 42 is only is relied is prevented, and the elastic piece 43 can be arranged so that when the pressing force to the gear shifting piece 5 is removed, the elastic piece 43 can quickly reset the gear shifting piece 5 to a state that the locking piece 42 and the gear shifting piece 5 are locked; the elastic member 43 is set as a return spring, the return spring movably penetrates through the sliding cavity 4a and is sleeved outside the locking member 42, one end of the return spring is fixedly connected with the adjusting member 41, the other end of the return spring is fixedly connected with the grip 4, when the grip 4 is held, the adjusting member 41 is pressed and rotated relative to the grip 4 by finger force, the adjusting member 41 drives the locking member 42 to move upwards, at the moment, the return spring is in a stretching state, after the pressing force of the finger to the adjusting member 41 is removed, the return spring in the stretching state contracts and returns, and drives the locking member 42 to slide downwards in the sliding cavity 4a, so that the locking member 42 is in locking fit with the gear 5, and the return spring in the embodiment is set as a tension spring.

As shown in fig. 4 and fig. 7-9, the transmission assembly comprises a front transmission rod 21, a rear transmission rod 31 and a connecting piece 11, one end of the front transmission rod 21 is in transmission connection with the front wheel assembly through the connecting piece 11, the other end of the front transmission rod 21 is in transmission connection with the gear shifting piece 5 through a positioning pin 53, one end of the rear transmission rod 31 is in transmission connection with the rear wheel assembly through another connecting piece 11, the other end of the rear transmission rod 31 is in transmission connection with the gear shifting piece 5 through the positioning pin 53, when the gear shifting piece 5 is used for adjusting the gear, the two-rod transmission mode of the front transmission rod 21 and the rear transmission rod 31 can enable the front transmission rod 21 to independently adjust the relative position of the front wheel assembly relative to the mower main body 1, and the rear transmission rod 31 independently adjusts the relative position of the rear wheel assembly relative to the mower main body 1, unlike the traditional mode that only one transmission rod is used for realizing simultaneous adjustment of the front wheel assembly and the rear wheel assembly, the method of independently adjusting the gear shifting piece 5 can effectively prevent the transmission rod from bending damage caused by overlarge stress when the gear shifting piece 5 is used for adjusting the gear; the gear shifting piece 5 is rotationally connected to the mower main body 1 through a rotating shaft 51, a tension spring 12 is connected between the front transmission rod 21 and the rotating shaft 51, a notch 21a is formed in the middle of the front transmission rod 21, a clamping foot at one end of the tension spring 12 is clamped to the notch 21a, a clamping foot at the other end of the tension spring 12 is clamped to the rotating shaft 51, different gear positions on the gear shifting piece 5 correspond to different ground clearance heights of the mower main body 1, when the mower main body 1 is at the highest ground clearance, the locking piece 42 is located at the highest gear of the gear shifting piece 5, and at the moment, the stretching length of the tension spring 12 is the shortest, so that the locking piece 42 needs to be locked at the highest gear for assembling the tension spring 12; when the gear is required to be adjusted from a lower gear to a higher gear, an operator can stabilize the mower main body 1 and press the adjusting piece 41 to enable the locking piece 42 and the gear shifting piece 5 to be in an unlocking state, at the moment, the front transmission rod 21 is pulled to move towards the rear wheel assembly direction by the pulling force of the tension spring 12, the front transmission rod 21 drives the gear shifting piece 5 to rotate clockwise, after the mower main body 1 is adjusted to a preset height, the pressing force of the adjusting piece 41 is removed, the adjusting piece 41 drives the locking piece 42 and the adjusting seat to be in a locking state, at the moment, the ground clearance of the mower main body 1 is kept constant, and therefore, the height adjustment of the mower main body 1 can be achieved without the need of the operator to downwards step on the rear wheel assembly, and the operation is convenient for two feet to be released.

As shown in fig. 7 to 9, the front wheel assembly includes a front wheel 611 and a first rotation shaft 61, wherein extension rods 63 are provided at both ends of the first rotation shaft 61, the first rotation shaft 61 is perpendicular to the extension rods 63, front wheel mounting shafts 631 are extended from the ends of the extension rods 63, such that the first rotation shaft 61 and the two side mounting shafts are parallel to each other and eccentrically disposed, the front wheel mounting shafts 631 are used for mounting the front wheel 611, and the extension rods 63 of the first rotation shaft 61 are in driving connection with the front transmission rods 21 through the connection members 11; the rear wheel assembly comprises a rear wheel 621 and a second rotating shaft 62, the mower main body 1 is provided with a driving motor 7, the driving motor 7 drives the second rotating shaft 62 to rotate through a gear assembly 71, an output gear 620 is arranged at the end part of the second rotating shaft 62, another connecting piece 11 is connected to the second rotating shaft 62 in a rotating way, a rear wheel mounting shaft 632 is arranged on the connecting piece 11, the rear wheel mounting shaft 632 and the second rotating shaft 62 are parallel and eccentrically arranged, the rear wheel mounting shaft 632 is used for mounting rear wheels, a rear transmission rod 31 is rotationally connected to the connecting piece 11 at the side close to the rear wheel 621, a connecting site of the rear transmission rod 31 and the connecting piece 11 at the side close to the rear wheel 621, a rotational connecting site of the second rotating shaft 62 and the connecting piece 11 at the corresponding side, and a fixing site of the rear wheel mounting shaft 632 and the connecting piece 11 are distributed in a triangle, after the connecting piece 11 at the side close to the rear wheel 621 rotates relative to the second rotating shaft 62, in addition, the distance between the rear wheel mounting shaft 632 and the second rotating shaft 62 is always kept consistent, an inner gear ring 6211 is circumferentially arranged, the inner gear ring 6211 is meshed with the output gear 620 at the end part of the second rotating shaft 62, and the inner gear 620 can be driven to rotate through the gear assembly to drive the inner gear assembly to rotate through the gear assembly 71, and the front mower main body 1 can be driven to rotate through the inner gear assembly 620; a dust cover 622 is provided on the side of the rear wheel 621 adjacent to the ring gear 6211.

The basic working principle of the utility model is as follows: the mower body 1 is provided with the grip 4, the accommodating cavity 4b of the grip 4 is rotationally provided with the adjusting piece 41, one end of the adjusting piece 41 is connected with the locking piece 42, the sliding part 422 of the locking piece 42 penetrates through the sliding cavity 4a of the grip 4 and is connected with the adjusting piece 41, the locking part 421 of the locking piece 42 stretches into the mower body 1 and is in locking fit with the lock hole 5a of the adjusting piece 5, the adjusting piece 5 is provided with a sliding groove communicated with a plurality of lock holes 5a along the rotating shaft 51 of the adjusting piece 5, the adjusting piece 41 is rotated by holding the grip 4 by fingers, the locking part 421 of the locking piece 42 is driven to be far away from the lock hole 5a, then the rear wheel 621 is lifted or pressed down relative to the second rotating shaft 62 by the connecting piece 11 under the condition of keeping the rear wheel 621 attached to the ground, the connecting piece 11 is driven by the rear transmission rod 31 to correspondingly rotate clockwise or anticlockwise relative to the rotating shaft 51, the front wheel 11 is simultaneously driven by the connecting piece 5 to correspondingly rotate clockwise or anticlockwise relative to the rotating shaft 51, the other connecting piece 11 is simultaneously utilized to reset the position of the front wheel body 1 relative to the mower body to the position of the mower body 611 by the corresponding to the lock hole 5a, the distance of the mower body is reset to the position of the adjusting piece 5, and the distance of the mower body is reset to the position of the mower body is adjusted to be adjusted to the height of the position of the mower body 1, and the position of the mower body is reset to be adjusted to the position of the mower body is adjusted to be a, and the position of the mower body is adjusted to be a is adjusted to have the distance is adjusted to be convenient to be reset to the height-adjusting device is opposite to the height-adjusted.

Second embodiment

As shown in fig. 10, the height-adjustable structure of the hand-push mower according to the first embodiment is different from that of the first embodiment in that: the transmission structure of this embodiment is set as a connecting rod 8, the middle part of the connecting rod 8 is fixedly provided with a connecting piece 8111, the connecting piece 8111 is provided with a rotating hole 81a, the connecting piece 8111 is rotatably connected with the gear shifting piece 5 through the locating pin 53 penetrating through the rotating hole 81a, the front end of the connecting rod 8 is connected with the front wheel 611 through a connecting piece 8111, the rear end of the connecting rod 8 is connected with the rear wheel 621 through another connecting piece 8111 for transmission, the gear shifting piece 5 is rotated around the rotating shaft 51, and meanwhile, the connecting rod 8 is driven to move towards the front wheel 611 or the rear wheel 621, so as to adjust the ground clearance of the mower main body 1.

The present embodiment is identical to the other structures of the first embodiment, and will not be described here again.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims (10)

1. The utility model provides a height-adjustable structure of hand propelled mower, is including mower main part (1), its characterized in that: the mower main body (1) is provided with a front wheel assembly, a rear wheel assembly and a height adjusting assembly, the height adjusting assembly comprises a locking piece (42) and a gear shifting piece (5), the front wheel assembly is in transmission connection with the gear shifting piece (5) and the rear wheel assembly is in transmission connection with the gear shifting piece (5) through a transmission assembly, and the locking piece (42) is matched with the gear shifting piece (5) to adjust the ground clearance of the mower main body (1); the mower main body (1) is provided with an adjusting piece (41), one end of the adjusting piece (41) is connected with the locking piece (42), and the other end of the adjusting piece (41) is rotatably connected with the mower main body (1).

2. The height-adjustable structure of a push mower of claim 1, wherein: the mower main body (1) is fixedly provided with a handle (4), the locking piece (42) is movably arranged on the handle (4), and the adjusting piece (41) is rotatably connected with the handle (4).

3. The height-adjustable structure of a push mower of claim 2, wherein: the locking piece (42) comprises a sliding part (422) and a locking part (421), the locking part (421) is matched with the gear shifting piece (5) in an adjusting mode, a sliding cavity (4 a) communicated with the handle (4) and a containing cavity (4 b) are formed in the handle (4), the sliding part (422) movably penetrates through the sliding cavity (4 a), and the adjusting piece (41) is rotationally arranged on the handle (4) and matched with the containing cavity (4 b) in an avoiding mode.

4. A height-adjustable structure for a push mower according to claim 3, wherein: the handle (4) is provided with a limit groove (4 c), the limit groove (4 c) is communicated with the accommodating cavity (4 b), the adjusting piece (41) is provided with a stop part (411), and the stop part (411) is matched with the limit groove (4 c) in a limit stop mode.

5. A height-adjustable structure for a push mower according to claim 3, wherein: the gear shifting piece (5) is rotationally connected to the mower main body (1) through a rotating shaft (51), a plurality of lock holes (5 a) are circumferentially formed in the gear shifting piece (5) by taking the rotating shaft (51) as a center, a plurality of lock holes (5 a) are communicated through arc grooves (5 b), the locking part (421) is in sliding fit with the arc grooves (5 b), and the locking part (421) is in locking fit with the lock holes (5 a).

6. The height-adjustable structure of a push mower of claim 5, wherein: the top of the gear shifting piece (5) is provided with a gear mark corresponding to each lock hole (5 a), and the mower main body (1) is provided with a visual hole (1 a) for observing the gear mark.

7. The height-adjustable structure of a push mower of claim 5, wherein: an elastic piece (43) is arranged between the adjusting piece (41) and the locking piece (42), and the elastic piece (43) always has a movement trend for driving the locking part (421) to be in locking fit with a locking hole (5 a) of the gear shifting piece (5).

8. The height-adjustable structure of a push mower of claim 7, wherein: the elastic piece (43) is arranged as a return spring, the return spring movably penetrates through the sliding cavity (4 a) and is sleeved outside the locking piece (42), one end of the return spring is fixedly connected with the adjusting piece (41), and the other end of the return spring is fixedly connected with the grip (4).

9. The height-adjustable structure of a push mower of claim 1, wherein: the transmission assembly comprises a front transmission rod (21), a rear transmission rod (31) and a connecting piece (11), one end of the front transmission rod (21) is in transmission connection with the front wheel assembly through the connecting piece (11), the other end of the front transmission rod (21) is rotationally connected with the gear shifting piece (5), one end of the rear transmission rod (31) is in transmission connection with the rear wheel assembly through another connecting piece (11), and the other end of the rear transmission rod (31) is rotationally connected with the gear shifting piece (5).

10. The height-adjustable structure of a push mower of claim 9, wherein: the gear shifting piece (5) is rotationally connected to the mower main body (1) through a rotating shaft (51), a tension spring (12) is connected between the front transmission rod (21) and the rotating shaft (51), a notch (21 a) is formed in the middle of the front transmission rod (21), the clamping foot at one end of the tension spring (12) is clamped to the notch (21 a), and the clamping foot at the other end of the tension spring (12) is clamped to the rotating shaft (51).