CN109983924A

CN109983924A - Hand pushed wheel type vehicle

Info

Publication number: CN109983924A
Application number: CN201811622135.6A
Authority: CN
Inventors: 高彬彬; 查霞红; 赵凤丽; 鄢正清
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2017-12-29
Filing date: 2018-12-28
Publication date: 2019-07-09
Also published as: CN209861646U; CN107996143A; WO2019129219A1

Abstract

The present invention relates to a kind of hand pushed wheel type vehicles, including two body, the rolling being arranged on body driving wheels, it further include the clutch of driving assembly and the connection driving wheel and the driving component, driving assembly includes self-powered motor and by the drive shaft of the outside power transmission of power of the self-powered motor, the quantity of clutch is two, on the extending direction of the drive shaft, first clutch and second clutch are arranged independently of one another.The hand pushed wheel type vehicle enables the rotary motion of two driving wheels mutually indepedent, two driving wheels state inconsistent there are revolving speed facilitates turning, compared with prior art, overall structure is also relatively easy by two independent clutches of setting.

Description

Hand pushed wheel type vehicle

Technical field

The present invention relates to a kind of hand pushed wheel type vehicles, more particularly, to a kind of self-powered system applied to the hand pushed wheel type vehicle System.

Background technique

Existing grass trimmer is mainly used on gasoline grass trimmer from drive system, and driving method has front-wheel drive, rear wheel drive Or 4 wheel driven, but structure is complicated for self-powered, higher cost, in addition, existing grass trimmer is when turning to, by driving or braking Steering is realized using speed difference.A kind of grass trimmer is disclosed such as Chinese patent application the 201620800543.6th, the mowing Machine includes brake hand handle, bracing wire and driving rear-wheel, further includes motor bridge and wheel brake hub, and control brake hand handle can control wheel brake hub Motor bridge is lockked, operator needs gently to grab brake handle, and wheel brake hub checks unilateral driving wheel, both sides driving wheel is made to form differential, And then so that left and right sidesing driving wheel is formed differential to realize turning function includes above-mentioned motor bridge transfer in grass trimmer. The process for realizing revolving speed using speed difference and driving or brake, due to drive shaft and driving wheel when practical operation Between still have connection, so, steering when, needs biggish twisting resistance, consumes energy.

Summary of the invention

The purpose of the present invention is to provide a kind of structures, and simple, more laborsaving self-powered moves hand pushed wheel type vehicle.

In order to achieve the above objectives, the invention provides the following technical scheme:

A kind of hand pushed wheel type vehicle, including body, the idler wheel being pivotally disposed on the body, the idler wheel includes Two driving wheels, the hand pushed wheel type vehicle further include driving assembly and the connection driving wheel and the driving component Clutch, the clutch include the secondary clutch discs being connect with the driving wheel and driveably with the secondary clutch discs Main clutch discs in meshing state or disengaged condition, the clutch and the driving component cooperate achievable described jointly Driving wheel can be driven and drive the hand pushed wheel type vehicle mobile；

The driving component includes self-powered motor and by the drive shaft of the outside power transmission of power of the self-powered motor, Two driving wheels are connected to the both ends of the drive shaft accordingly respectively；

When the clutch is in the meshing state, the drive shaft is able to drive the driving wheel along first direction It rotates forward, the clutch is in the disengaged condition, and the driving wheel can be freely rotated；

The quantity of the clutch is two, respectively connect the first of driving wheel and the drive shaft from It closes mechanism and connects the second clutch of another described driving wheel and the drive shaft, in the extension side of the drive shaft Upwards, first clutch and second clutch are arranged independently of one another.

In one embodiment, on the extending direction of the drive shaft, first clutch is arranged described The other end of the drive shaft is arranged in one end of drive shaft, second clutch.

In one embodiment, on the extending direction of the drive shaft, the outermost face of first clutch Axial distance between the outermost face of second clutch and the axis between the outermost face of two driving wheels It is greater than 1/2 to the ratio of distance and is less than or equal to 1.

In one embodiment, the drive shaft is axis made of an one integral piece, and the both ends of the drive shaft are right respectively That answers is arranged in the corresponding driving wheel.

In one embodiment, the drive shaft and the driving wheel are coaxially disposed.

In one embodiment, the secondary clutch discs be fixedly connected on the wheel hub of the driving wheel or with the wheel hub It is integrally formed.

In one embodiment, the hand pushed wheel type vehicle further includes for adjusting the relatively described drive shaft of the body Distance in the up-down direction height-regulating mechanism, the height-regulating mechanism include be turned up connecting rod and with it is described be turned up connecting rod both ends Two height-regulating support parts being connected respectively, the both ends of the drive shaft are arranged in the corresponding height-regulating support part respectively On, each height-regulating support part can be pivoted relative to the body around a pivot center, the drive shaft and the rotation Axis is intervally installed, to realize that the drive shaft can be circumferentially rotated around the pivot center.

In one embodiment, the drive shaft is during the pivot axis, the self-powered motor phase It is constant always to the position of the body.

In one embodiment, the axis of the output shaft of the self-powered motor is essentially coincided with the pivot center.

In one embodiment, the driving component further includes that power is originated to the drive motor power transmission to institute The transmission mechanism of drive shaft is stated, the transmission mechanism concrete configuration is reduction gearbox, and the reduction gearbox has to be connected with the drive shaft The first installation position connect and the second installation position being supported on the height-regulating connecting rod, first installation position and second peace Dress position offsets each other pre-determined distance.

In one embodiment, the drive shaft and the non-coaxial setting of the driving wheel, the driving wheel further includes setting It sets the teeth portion on wheel hub and is configured to the pinion gear engaged with the teeth portion, the drive shaft is arranged in the pinion gear, The pair clutch discs are fixedly connected with the pinion gear, and when the clutch is in meshing state, the drive shaft passes through institute Stating clutch drives the pinion gear to rotate around first direction, to drive the driving wheel to advance.

In one embodiment, the teeth portion is configured to the ring gear being arranged with the axis coaxle of the driving wheel or big Gear, the number of teeth of the gear wheel are greater than the number of teeth of the pinion gear.

In one embodiment, the self-powered motor configurations be drive the drive shaft along the first direction rotate with The second direction rotation for driving the driving wheel to rotate forward, and the driving axial capable of being driven opposite to the first direction So that the clutch switches to the disengaged condition.

In one embodiment, the driving component further includes self-powered controller for motor, the self-powered motor control Device includes driving the driving wheel along the first party for directly or indirectly detecting the stopping of the self-powered motor To the detection part of rotation, when the detection part detects that the stopping of the self-powered motor is rotated along the first direction, institute State the self-powered controller for motor control self-powered motor drives the drive shaft along the second party within the predetermined time To rotation preset time, so that the clutch is changed into the disengaged condition.

In one embodiment, being provided in the main clutch discs and the drive shaft can make the main clutch discs exist The sliding assembly moved axially in the drive shaft, the sliding assembly include the guide part being arranged in the drive shaft and open It is located in the main clutch discs and is configured to the guide groove cooperated with the guide part, when the drive shaft is driven along first Direction rotates forward, and the guide part and the guide groove cooperate the realization main clutch discs from far from the secondary clutch discs jointly Position move to close to the position of the secondary clutch discs, form the main clutch discs and engaged with the pair clutch discs in described State.

In one embodiment, the clutch further includes electromagnetic driver, and the electromagnetic driver only can be by The self-powered motor rotates forward along first direction to be activated, to drive the main clutch discs towards the direction of the secondary clutch discs It is moved to the clutch and is in the meshing state.

In one embodiment, the clutch further include the clutch disengage during hinder described in The damping unit of the rotary motion of main clutch discs, the damping unit are abutted with the main clutch discs.

In one embodiment, identical first engagement of multiple specifications is provided on an end face of the secondary clutch discs Tooth is provided with identical second engaging tooth of multiple specifications in the main clutch discs, and first engaging tooth includes first field of conjugate action, Second engaging tooth includes second field of conjugate action, and first field of conjugate action and second field of conjugate action are configured to be substantially parallel to each other Plane, and have angle with the axis shape of the drive shaft, the angle is greater than 0 less than 10 degree.

In one embodiment, first engaging tooth includes first pushing surface opposite with first field of conjugate action, Second engaging tooth includes second pushing surface opposite with second field of conjugate action, when first pushing surface and described second When pushing surface mutually pushes effect, first pushing surface pushes second pushing surface so that the main clutch discs are along the drive The axis direction of moving axis is moved to the disengaged position.

In one embodiment, first pushing surface, the second recursion face are mutually matched arcwall face or lozenges Or screw inclined plane.

To achieve the goals above, technical solution used by the embodiment of the present disclosure is: a kind of hand pushed wheel type vehicle, including Body, the idler wheel being pivotally disposed on the body, the idler wheel include at least one driving wheel, the hand pushed wheel type vehicle It further include the clutch of driving assembly and the connection driving wheel and the driving component, the clutch includes The secondary clutch discs that connect with the driving wheel and driveably it is in the secondary clutch discs meshing state or disengaged condition Main clutch discs, the clutch and the driving component cooperate jointly can be achieved the driving wheel and can be driven and drive institute It is mobile to state hand pushed wheel type vehicle；

The driving component includes self-powered motor and by the drive shaft of the outside power transmission of power of the self-powered motor； When the clutch is in the meshing state, the drive shaft is able to drive the driving wheel along first direction to forward It is dynamic；When the clutch is in the disengaged condition, the driving wheel can be freely rotated；

The pair clutch discs are directly fixedly connected on the wheel hub of the driving wheel, or are integrally formed with the wheel hub.

In one embodiment, the number of the driving wheel is two, specially left rear wheel and off hind wheel, the clutch The number of mechanism is two, respectively connects the left rear wheel and the first clutch of the drive shaft and connect the right side Second clutch of rear-wheel and the drive shaft, on the extending direction of the drive shaft, first clutch and institute The second clutch is stated to be arranged independently of one another.

In one embodiment, the drive shaft is axis made of an one integral piece, and one end of the drive shaft is arranged in In the left rear wheel, the other end of the drive shaft is arranged in the off hind wheel.

In one embodiment, the drive shaft is coaxially disposed with the left rear wheel, the off hind wheel.

In one embodiment, the secondary clutch discs are coaxially disposed with the left rear wheel, the off hind wheel.

In order to achieve the above objectives, the present invention also provides a kind of technical solution is as follows: a kind of hand pushed wheel type vehicle, including machine Body, the work motor being arranged on the body drive the work package for executing work by the work motor, are arranged described The driving assembly of driving wheel, driving the driving wheel rotation on body and setting are in the driving wheel and the driving group Clutch between part, the driving component include self-powered motor and the drive shaft by self-powered motor drive；It is described from Mechanism is closed to include the first engaging section connecting with the driving wheel and be arranged in the drive shaft and there is the second engaging section Main clutch discs, the main clutch discs can be moved up in the axis of the drive shaft so that second engaging section and described the The engagement of one engaging section and disengagement.

In one embodiment, being provided in the main clutch discs and the drive shaft can make the main clutch discs exist The sliding assembly moved axially in the drive shaft, when the self-powered motor drives the drive shaft to be rotated in a first direction, The sliding assembly makes the main clutch discs be moved to the position of engagement from disengaged position.

In one embodiment, the sliding assembly includes guide part and guide groove, the guide part and the guiding One of slot is set in the drive shaft, and another one are set in the main clutch discs, and the guide part activity is set It is placed in the guide groove and can be moved in the guide groove, when the self-powered motor drives the drive shaft along first direction When rotation, the guide part is driven to be moved to an extreme position of the guide groove so that the main clutch discs are in engagement position It sets.

In one embodiment, the guide groove is screw slotting, and the guide part is to be movably connected on the spiral The latch structure of fluting, the latch structure and the screw slotting cooperate to limit shifting of the main clutch discs in the drive shaft Dynamic path.

In another preferred embodiment, the guide groove includes having certain angle with the axis of the drive shaft Push inclined-plane and with the opening that push inclined-plane opposite, the guide part is to be movably connected on the pin knot for pushing inclined-plane Structure, the latch structure can be freely accessible to and exit the guide groove by the opening.

In one embodiment, the clutch further includes electromagnetic driver, and the electromagnetic driver can drive The main clutch discs are in the drive shaft towards the movement of the direction of the driving wheel so that first engaging section and described second Engaging section engagement.

In one embodiment, the electromagnetic driver includes hot-wire coil and magnet, and the magnet is set to described In main clutch discs, the side of the main clutch discs is arranged in the hot-wire coil.

In one embodiment, first engaging section has first field of conjugate action, and second engaging section has can Second field of conjugate action engaged with first field of conjugate action, first field of conjugate action are engaged with second field of conjugate action, the self-powered Driving is transferred to the driving wheel by the clutch by motor, so that the driving wheel is rotated to the first direction, First field of conjugate action and second field of conjugate action have angle with the axis shape of the drive shaft respectively, the angle be greater than or Equal to 0 and less than 45 degree.

In one embodiment, first engaging section also has the first pushing surface, and second engaging section also has Second pushing surface, when first pushing surface and the interaction of the second pushing surface, by the main clutch discs to far from the master The direction of driving wheel elapses.

In one embodiment, first engaging section also has the first pushing surface, and second engaging section also has Second pushing surface, when the self-powered motor is out of service, first pushing surface pushes second pushing surface so that the master Clutch discs are mobile in the axis direction of the drive shaft and first engaging section and the second engaging section are disengaged.

In one embodiment, first pushing surface, the second pushing surface are mutually matched arcwall face or lozenges.

In one embodiment, the clutch further includes mutually separating first engaging section and the second engaging section Elastic device.

In one embodiment, the elastic device includes being arranged between the main clutch discs and the driving wheel Spring.

In one embodiment, the drive shaft and the driving wheel are rotated around same axis.

In one embodiment, the grass trimmer includes two front-wheels and two rear-wheels being oppositely arranged, the active Wheel is one of them in described two front-wheels or described two rear-wheels.

The beneficial effects of the present invention are: hand pushed wheel type vehicle of the invention is by setting clutch, by the clutch The main clutch discs of structure are driven to move so that clutch engagement or disengagement between the position of engagement and disengaged position, thus So that self-powered motor can drive drive shaft to rotate, hand pushed wheel type vehicle is moved forward, or disengages self-powered motor and driving wheel, Convenient for turning to, ease for use is good；In addition, compared with prior art, easy to operate, repacking is convenient, and overall structure is relatively easy.

The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention, And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.

Detailed description of the invention

Fig. 1 looks up simple diagram for hand pushed wheel type vehicle shown in the embodiment of the present invention first；

Fig. 2 is the shown hand pushed wheel type vehicle in Fig. 1 from drive system and the main diagram of height-regulating mechanism；

Fig. 3 is the exploded view of a kind of clutch in Fig. 1, drive shaft and driving wheel；

Fig. 4 is in the status diagram under disengaged condition in clutch for component shown in Fig. 3；

Fig. 5 is in the status diagram under meshing state in clutch for component described in Fig. 3；

Fig. 6 is hand pushed wheel type vehicle shown in Fig. 2 from one working depth stereoscopic schematic diagram of drive system and height-regulating mechanism；

The perspective representation figure from drive system and another working depth of height-regulating mechanism of Fig. 7 hand pushed wheel type vehicle shown in fig. 6；

Fig. 8 is the exploded view of another clutch in Fig. 1, drive shaft and driving wheel；

Fig. 9 is another schematic diagram from drive system and height-regulating mechanism for being applied to hand pushed wheel type vehicle shown in FIG. 1；

Figure 10 is the connection structure exploded view of clutch shown in Fig. 9 and one of driving wheel；

Figure 11 is the signal of another working depth from drive system and height-regulating mechanism of hand pushed wheel type vehicle shown in Fig. 9 Figure；

Figure 12 is the exploded view of another clutch in Fig. 1, drive shaft and driving wheel；

Figure 13 is in the status diagram under disengaged condition in clutch for component shown in Figure 12；

Figure 14 is in the status diagram under engagement state in clutch for component described in Figure 12；

Figure 15 a and Figure 15 b are the implementation of the first clutch discs, second two kinds of tooth matching angles of clutch discs.

Figure 16 is the schematic diagram of another clutch of hand pushed wheel type vehicle shown in the present invention.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below Example is not intended to limit the scope of the invention for illustrating the present invention.

Referring to Figure 1, hand pushed wheel type vehicle 10 shown in the embodiment of the present invention one, specifically a kind of grass trimmer, including machine Body 1, the work motor (not shown) being arranged on body 1, by work motor drive execute work work package (not shown), The idler wheel being pivotally arranged on the body 1, the idler wheel include driven wheel 2 and driving wheel 3, driving wheel 3 are driven to rotate Driving assembly 4 and the clutch (5,5 ') that is connected between driving wheel 3 and driving assembly 4, clutch (5,5 ') tool There is connection driving assembly 4 with driving wheel 3 to form moving for meshing state that power engage and disconnection driving assembly 4 and driving wheel 3 The disengaged condition of power engagement.Driving wheel 3 and driving assembly 4 and clutch (5,5 ') constitute the self-powered of the hand pushed wheel type vehicle 10 System.

Clear in order to describe, defining arrow direction in Fig. 1 is first direction, that is, the hand pushed wheel type vehicle forward Direction of advance.First party forward with arrow meaning is second direction backward in the opposite direction.

In the present embodiment, please also refer to Fig. 2, driving assembly 4 includes self-powered motor 41 and connect with self-powered motor 41 Transmission mechanism and the drive shaft 43 that is driven by transmission mechanism, specifically, transmission mechanism configuration is connect with self-powered motor 41 Reduction gearbox 42, reduction gearbox 42 include then gear reduction is driven for the rotary motion of self-powered motor 41 to be slowed down To drive shaft 43.Self-powered motor 41 drives drive shaft 43 to rotate along first direction forward, and drive shaft 43 is by the drive of self-powered motor 41 Power transmits outward, and then driving wheel 3 is driven to rotate forward, and hand pushed wheel type vehicle 10 is advanced forward.

Specifically, gear reduction includes secondary planetary gear reducing mechanism and level-one parallel gears deceleration mechanism.Two Grade planetary gear reducing mechanism is in the case where same reduction ratio, small volume, and the transmission of planetary gear reducing mechanism Efficiency is higher, can be effectively reduced transmission loss.

In the present embodiment, the number of driving wheel 3 is two, specially left rear wheel and off hind wheel.For convenience, it schedules The driving wheel 3 being connected in Fig. 2 with clutch 5 is left rear wheel, and being connected with clutch 5 ' is off hind wheel.Each driving wheel 3 Including the wheel hub being used to support and the tire that wheel hub circumferential direction is arranged in, left rear wheel and off hind wheel are connected to the two of drive shaft 43 End.Certainly, in other embodiments, driving wheel 3 is also possible to a pair of of front-wheel, and driving assembly 4 is set between two front-wheels, Advance or the number of driving wheel 3 for driving two front-wheels are one, specially a front-wheel or rear-wheel.

Referring to Figure 1-2, hand pushed wheel type vehicle further includes two and is separately positioned between two driving wheels 3 and drive shaft 43 Clutch 5,5 ', respectively connect a driving wheel 3 and the first clutch 5 of drive shaft 43 and connect another master Second clutch 5 ' of driving wheel 3 and drive shaft 43.Specifically, being respectively the first clutch for connecting left rear wheel and drive shaft 43 Structure and the second clutch 5 ' for connecting off hind wheel and drive shaft 43.First, second clutch 5,5 ' is connected to drive One end that drive shaft 43 is arranged in the both ends of moving axis 43, i.e. the first clutch 5, the second clutch 5 ' are arranged in drive shaft 43 The other end.Here one end can be understood as the first clutch 5 close to drive shaft 43 left free end be arranged, second from The right free end that mechanism 5 ' is closed close to drive shaft 43 is arranged.On first direction b forward, the first, second clutch 5,5 ' It is greater than the revolving speed of driving wheel 3 in response to the revolving speed of drive shaft 43 and is in meshing state, and the first, second clutch 5,5 ' The revolving speed being able to respond in driving wheel 3 is greater than the revolving speed of drive shaft 43 and in disengaged condition.That is, first, second from Mechanism 5,5 ' is closed to turn between meshing state and disengaged condition in response to drive shaft 43 and the revolving speed size relation of driving wheel 3 It changes.That is, drive shaft 43 continues transmission and connects if the rotation speed of the first direction forward of driving wheel 3 has been more than the revolving speed of drive shaft 43 It is connected on driving wheel 3, the rotation of driving wheel 3 will drive driving assembly 4 to rotate together, therefore driving assembly 4 is constituted to driving wheel 3 The resistance of rotary motion, the first, second clutch 5,5 ' can make driving wheel 3 be detached from drive shaft 43 automatically, to reduce master 3 rotational resistance of driving wheel.

On the extending direction of drive shaft 43, the first clutch 5 and the second setting independently of one another of clutch 5 '.Specifically , the first clutch 5 and the second clutch 5 ' are independently set to drive shaft 43 on the extending direction of drive shaft 43 Two ends, i.e. the first clutch 5 and the second clutch 5 ' are spaced on the extending direction of drive shaft 43 and set up separately.More Body, on the extending direction of drive shaft 43, the outermost face of the first clutch 5 and the outermost face of the second clutch 5 ' Between axial distance and two driving wheels 3 outermost face between axial distance ratio be greater than 1/2 and be less than or equal to 1, The ratio of the preferred axial distance is greater than 3/4 and is less than or equal to 1.Here, outermost face is specifically in relative drive shaft 43 For the heart, it is a relativeness, is inner end closer to the center on the extending direction of drive shaft 43, far from drive shaft 43 Center on extending direction is known as outer end.

In the present embodiment, the first and second clutch (5,5 ') is directly connected to two driving wheels 3 respectively.Specifically, first, Second clutch (5,5 ') is directly connected in respectively on the wheel hub of driving wheel 3.Respectively by the first, second clutch (5,5 ') It is directly connected to driving wheel 3, clutch is enabled to directly drive the rotation of driving wheel 3, to eliminate intermediate corresponding biography Moving axis, and the first, second clutch 5,5 ' is separately positioned on the wheel hub of corresponding driving wheel 3, avoids independent clutch Mechanism space and volume occupy, integral with hub-shaped, and hand pushed wheel type vehicle can be made more preferably compact, structurally reasonable.

In the present embodiment, drive shaft 43 is axis made of an one integral piece, and the both ends of drive shaft 43 are corresponding to be arranged in In corresponding two driving wheels 3, and it is connect by bearing with each driving wheel 3.Drive shaft 43 is connected by bearing and driving wheel 3 It connects, when clutch is in disengaged condition, 3 relative drive shaft 43 of driving wheel is freely rotated, and the rotary motion of drive shaft 43 is not Driving wheel 3 can be driven to rotate, only when clutch is in meshing state, the rotation of first direction forward of drive shaft 43 can The driving wheel 3 is driven to rotate.

Specifically, drive shaft 43 and driving wheel 3 are coaxially disposed, i.e., drive shaft 43 and driving wheel 3 are rotated around same axis. To which drive shaft 43 directly drives the driving wheel 3 and rotates, and avoids due to non-coaxial setting and needs to design additional transmission The trouble of structure simplifies structure design, reduces costs, and avoids the complexity of driving wheel design, so that the driving group Part 4 can be with general conventional driving wheel.

A clutch (5,5 ') is respectively set between each driving wheel 3 and drive shaft 43, realizes the rotation of driving wheel 3 Transhipment is dynamic can be mutually indepedent, can have rotational speed difference in synchronization.For example, definition turns small curved driving wheel 3 in turning For interior driving wheel, the driving wheel 3 of large radius turn is outer driver, and the path length walked required for interior driving wheel and outer driver is not Together, therefore its revolving speed can be different, and there are the inconsistent states of two 3 revolving speeds of driving wheel, therefore are separately connected using two each First, second clutch 5,5 ' of driving wheel 3, so that two driving wheels 3 can be mutually indepedent in rotary motion, not always It is that revolving speed is consistent, is conducive to turning or non-rectilinear advances.

Since the first, second clutch 5,5 ' all has identical structure, identical function is realized, in order to describe letter It is clean, only wherein the first clutch 5 is illustrated, it is no longer repeated for the second clutch 5 '.Certainly, function is not being influenced Under the premise of realization, the first clutch 5 also can have different structures from the second clutch 5 '.

Refer to Fig. 3 and combine Fig. 1-2, the first clutch 5 include the secondary clutch discs 7 being connect with driving wheel 3 and with Drive shaft 43 is sequentially connected and is configured to the main clutch discs 51 moved up in the axis of drive shaft 43, main 51 quilt of clutch discs Driving is moved between the position of engagement engaged with secondary clutch discs 7 and the disengaged position of the secondary clutch discs 7 of disengaging.When main clutch discs 51 are moved to the position of engagement, and the first clutch 5 is in meshing state, and drive shaft 43 is able to drive driving wheel 3 along forward first Direction b rotation, when main clutch discs 51 are moved to disengaged position, the first clutch 5 is in disengaged condition, and driving wheel 3 being capable of edge Any direction of rotation is freely rotated, and can't be driven the resistance of component 4.

Specifically, secondary clutch discs 7 are fixedly connected on the wheel hub of the driving wheel 3 or are integrally formed with the wheel hub.It is secondary The first engaging section is provided in clutch discs 7, the first engaging section is made of identical first engaging tooth 52 of multiple specifications, and each first Engaging tooth 52 has first field of conjugate action 521 and the first pushing surface 522, in the present embodiment, first engaging section be formed in it is secondary from The end face of disk 7 is closed, which is embedded in driving wheel 3.Specifically, secondary clutch discs 7 are set on the wheel hub of driving wheel 3, And be coaxially disposed with driving wheel 3, more specifically, secondary clutch discs 7 are fixedly installed on the wheel hub of driving wheel 3, alternatively, secondary clutch discs 7 are shaped on the wheel hub of driving wheel 3.In the present embodiment, which is specially face gear, the first engaging tooth 52 For unidirectional end-tooth.Really, in other embodiments, secondary clutch discs 7 can be not provided with, and directly the first engaging section is arranged in master The end face of driving wheel 3, the i.e. driving wheel 3 are the wheel with unidirectional end-tooth.

In the present embodiment, the second engaging section is provided in main clutch discs 51, main clutch discs 51 can be in drive shaft 43 It is moved on axis direction so that the second engaging section is engaged and disengaged with the first engaging section, when the first engaging section and the second engaging section are nibbled When conjunction, main clutch discs 51 are in the position of engagement, and the first clutch 5 is in meshing state；When the first engaging section is engaged with second When portion is detached from, main clutch discs 51 are in a disengaged position, and the first clutch 5 is in disengaged condition.Specifically, in main clutch discs 51 Axially extending cannula portion 54 of second engaging section along drive shaft 43.Second engaging section by multiple same sizes the second engaging tooth 53 compositions, second field of conjugate action that each second engaging tooth 53 has the second pushing surface 532 and can engage with first field of conjugate action 521 531, which is formed in the end face of main clutch discs 51.In specific implementation, which is arranged to end-tooth Wheel, the second engaging tooth 53 are specially unidirectional end-tooth.Main clutch discs 51 can be moved on the axis direction of drive shaft 43 so that Second engaging section is engaged or is disconnected with the first engaging section, to realize self-powered motor 41 and the linkage of driving wheel 3 and disengage.This second Engaging section is engaged and is disengaged with the first engaging section through first field of conjugate action 521, second field of conjugate action 531, the first pushing surface 522, the Two pushing surfaces 532 realize, specifically: when first field of conjugate action 521 is engaged with second field of conjugate action 531, self-powered motor 41 passes through the Driving is transferred to driving wheel 3 by one clutch 5, so that driving wheel 3 is rotated to first direction；When the first pushing surface 522 and It is when two pushing surfaces 532 interact, main clutch discs 51 are mobile to the direction far from driving wheel 3.

The specific work process that first clutch 5 makes self-powered motor 41 link or disconnect with driving wheel 3 is as follows: driving Component 4 starts, and driving assembly 4 drives the main rotation of clutch discs 51 and movement, and then second field of conjugate action 531 and pair of main clutch discs 51 First field of conjugate action 521 of clutch discs 7 engages, and the driving of self-powered motor 41 is transferred to driving wheel 3, and driving wheel 3 is to first party To rotation, linkage is realized, as shown in Figure 5；Self-powered motor 41 is out of service, and the revolving speed of driving wheel 3 is greater than the revolving speed of drive shaft 43, First pushing surface 522 push the second pushing surface 532 so that main clutch discs 51 in drive shaft 43 axial movement and make first to nibble Conjunction portion and the second engaging portion are from (disengagement), as shown in Figure 4.In the present embodiment, the first pushing surface 522, the second pushing surface 532 It, certainly, in other embodiments, in first pushing surface 522, the second pushing surface 523 can be with for mutually matched arcwall face At least one is lozenges or screw inclined plane.

Please with reference to Fig. 4-5, main clutch discs 51 can the axis direction in drive shaft 43 along drive shaft 43 move, it is main from It closes and is provided with the sliding assembly for moving main clutch discs 51 on the axis direction of drive shaft 43 in disk 51 and drive shaft 43, define Two positions that main clutch discs 51 are mobile and formed are disengaged position (shown in Fig. 4) and the position of engagement (shown in Fig. 5), when self-powered horse When driving the drive shaft 43 to be rotated in a first direction up to 41, sliding assembly moves main clutch discs 51 from disengaged position (shown in Fig. 4) It moves to the position of engagement (shown in Fig. 5).Sliding assembly may include guide part (6) and guide groove (55,55 '), guide part (6) and guiding One of slot (55,55 ') may be disposed in drive shaft 43, and another one are set in main clutch discs 51, and guide part (6) is living It is dynamic to be set in guide groove (55,55 ') and be moved in guide groove (55,55 '), when self-powered motor 41 drives the drive shaft 43 When being rotated in a first direction, guide part (6) is driven to be moved to an extreme position of guide groove (55,55 ') so that at main clutch discs In the position of engagement (shown in Fig. 5).

In the present embodiment, guide groove (55,55 ') is screw slotting 55, and screw thread fluting 55, which opens up, is formed in main clutch On disk 51, guide part (6) is the latch structure 6 for being movably connected on screw slotting, which is arranged in drive shaft 43, the pin Structure 6 and screw slotting 55 cooperate to limit movement routine of the main clutch discs 51 in drive shaft 43.The screw slotting 55 is along master The setting length that the moving direction of clutch discs 51 extends, this sets length as that can make second field of conjugate action 531 and first field of conjugate action 521 engagements can be such that second field of conjugate action 531 separates with first field of conjugate action 521 again and not will form interference (i.e. first between each other Engaging section and the second engaging portion from) when total stroke length.When drive shaft 43 first direction forward rotate when, main clutch discs 51 driven work rotations and spiral axial movement, to realize that main clutch discs 51 are moved up in the axis of drive shaft 43.The spiral shell Unscrewing slot 55 is provided in cannula portion 54, the disengagement position 551 and engagement position 552 of screw slotting 55, the mobile institute of the main clutch discs 51 The disengaged position of formation and the position of engagement respectively correspond the disengagement position 551 and engagement position 552 of the screw slotting 55, disengage position 551 The both ends (two extreme positions that the both ends are respectively screw slotting 55) of screw slotting 55 are located at engagement position 552. In other embodiments, the position of latch structure and screw slotting can be interchanged, and latch structure 6 is formed in main clutch discs 51, spiral shell Unscrewing slot 55 is provided in drive shaft 43, alternatively, the screw connection structure that the sliding assembly can also be mobile for achievable spiral.

The working method of the clutch is as follows: such as Fig. 4, when clutch is in disengaged condition, secondary clutch discs 7 and master Clutch discs 51 disengage, and the first engaging section (multiple first engaging tooths 52) is separated with the second engaging section (multiple second engaging tooths 53), Latch structure 6 in drive shaft 43 is located at the position of the disengagement position 551 of the screw slotting 55 in main clutch discs 51.When self-powered motor 41 Starting, the transmission driving of drive shaft 43, which makes rotating motion, at this point, the latch structure 6 in drive shaft 4341 is by disengaging position 551 turn to engagement position 552, and such as Fig. 5, in this process, latch structure 6 pushes main clutch discs 51 driving by screw slotting 55 It is moved axially on moving axis 43 along the generation of drive shaft 43, nibbles the second engaging section of main clutch discs 51 with the first of secondary clutch discs 7 The engagement of conjunction portion, main clutch discs 51 and secondary clutch discs 7 are in engagement state, and clutch links self-powered motor 41 and driving wheel 3, Driving wheel 3 does first direction rotation forward, and hand pushed wheel type vehicle 10 moves forward.When self-powered motor 41 is (shutdown) out of service, Drive shaft 43 is stopped rotating, and user continues to press on the first direction operation that hand pushed wheel type vehicle 10 marches forward, and driving wheel 3 will be after Continuous first direction b forward is rotated, and driving wheel 3 will drive secondary clutch discs 7 to rotate to first direction b, and due to self-powered motor 41 this When it is out of service, the revolving speed of driving wheel 3 is greater than the revolving speed of drive shaft 43, and the first engaging section and the second engaging section mutually support Push away, the first pushing surface 522 push the second pushing surface 532 so that main clutch discs 51 have one it is biggish push out driving and one compared with The power of small circular motion keeps latch structure 6 mobile by engaging position 552 with the relative position of the screw slotting 55 in main clutch discs 51 To position 551 is disengaged, such as Fig. 4, so that main clutch discs 51 and secondary clutch discs 7 separate, realize and disengage function, self-powered motor 41 with Driving wheel 3 disconnects, and driving wheel 3 can be freely rotated, and is not driven the influence of component 4.

Specifically, the first clutch 5 further includes the shell 50 at least partly accommodating main clutch discs 51.Shell 50 is for receiving Hold main clutch discs 51 and can prevent foreign matter from entering clutch and clutch is polluted.

In order to realize the reliable disengagement of main clutch discs 51 with secondary clutch discs 7, in the present embodiment, the first clutch 5 is also wrapped Include the damping unit for contacting with main clutch discs 51 and rotating for limiting main clutch discs 51, damping unit and main clutch discs (51,51 ') Elastic Contact increases damping to the rotation of main clutch discs (51,51 '), so that after self-powered motor 41 stops operating, secondary clutch discs 7 revolving speed is greater than the revolving speed of main clutch discs (51,51 '), and secondary clutch discs 7 drive main clutch discs (51,51 ') to turn, and supports due to first Pushing surface 522 pushes the second pushing surface 532, has winner's clutch discs (51,51 ') as secondary clutch discs 7 rotate together and Xiang Yuan The trend of direction movement from secondary clutch discs 7, and damping unit limits main clutch discs (51,51 ') as secondary clutch discs 7 turn together Dynamic, therefore, the rotary motion of main clutch discs 51 is moderately limited, so that main clutch discs are more reliable to far from secondary clutch discs 7 Direction it is mobile, realize the reliable disengagement of main clutch discs 51 with secondary clutch discs 7.In the present embodiment, damping unit specifically be can be Spring leaf or rubber strip.

In the present embodiment, hand pushed wheel type vehicle 10 further includes the height-regulating machine for adjusting work package Yu supporting surface distance Structure, namely for the distance in the up-down direction for adjusting 1 relative drive shaft 43 of body.Please continue to refer to figure Fig. 2 and Fig. 6 And Fig. 7, the height-regulating mechanism have a pivot center 101, pivot center 101 and the relatively fixed setting of body 1, height-regulating mechanism can Operation circumferentially rotates drive shaft 43 around pivot center 101, to adjust body 1 and drive shaft 43 in the up-down direction Distance.Specifically, height-regulating mechanism includes that height-regulating connecting rod 62 and two are fixedly connected with the both ends that connecting rod 62 is turned up respectively Height-regulating support part (61,61 '), and lack the height-regulating operating parts 66 of a height-regulating support part (61,61 ') connection therewith.Drive shaft 43 are arranged in respectively on two height-regulating support parts (61,61 '), and each height-regulating support part (61,61 ') is with respect to body 1 around one Pivot center 101 pivots setting, and drive shaft 43 is spaced apart from each other with pivot center 101, and height-regulating mechanism is operable to make drive shaft 43 Circumferentially rotated around pivot center 101, thus adjust body 1 and drive shaft 43 in the up-down direction at a distance from.More specifically, two A height-regulating support part 61,61 ' be symmetrical arranged, each height-regulating support part (61,61 ') include the interconnecting piece being connect with drive shaft 43 and Limiting section (64,64 ') for connecting with body 1, limiting section (64,64 ') are rotatably connect with body 1, two limiting sections (64,64 ') coaxial arrangement, and opposite body 1 pivots around pivot center 101 and is arranged, can operate adjusting height-regulating operating parts 66 makes to adjust High supporting element (61,61 ') rotates around the pivot center 101, so that drive shaft 43 be driven to rotate around pivot center, and then changes Drive shaft 43 is with respect to the position of body 1 in the up-down direction.Limiting section 64 (64 ') is for providing the rotational support of height-regulating mechanism Point, two limiting sections 64,64 ' are coaxially disposed, and have common pivot center 101, and respectively as two rotation supporting points, are adjusted High connecting rod 62 is operable to be rotated around 101 line of pivot center, meanwhile, drive shaft 43 is also therewith around axial turn of pivot center 101 It is dynamic, due to the position-limiting action of limiting section 64,64 ', drive shaft 43 and limiting section 64 in up and down direction are changed during rotation, 64 ' distance to have adjusted the height of body 1 Yu ground, and then changes the height on work package and ground.

On the extending direction of drive shaft 43, the first clutch 5 is set to height-regulating support part 61 and corresponding connection is driven Between dynamic driving wheel 3, the second clutch 5 is set to height-regulating support part 61 ' on the extending direction of drive shaft 43 and institute is right It should connect between the driving wheel 3 of driving, that is, the first clutch 5 and the second clutch 5 ' are respectively arranged at height-regulating support part Between (61,61 ') and corresponding driving wheel 3.5 ' scattering device of first clutch 5 and the second clutch, is respectively arranged at The outside of two height-regulating support parts 61,61 ', so that structure is more compact, it is rationally distributed.

Specifically, please referring to Fig. 6 and Fig. 7, Fig. 6 and Fig. 7 are respectively illustrated and operating parts 66 are turned up at different operation position Two different working depths.Connecting rod 62, which is turned up, has axis 102, and the axis of drive shaft 43 is 102, during height-regulating, is adjusted High operating parts 66 is operable to change the distance of axis 102 and 103 relative axis 101 of axis in the up-down direction, due to axis 101 opposite 1 positions of body are constant, therefore, when relative axis 101 changes the axis 102 of drive shaft 13 in the up-down direction, machine Body 1 is also changed with respect to the height on ground.Working condition shown in the ratio of state shown in Fig. 6 Fig. 7,64,64 ' distance of limiting section Ground is closer, and therefore, working depth shown in fig. 6 is lower than working depth shown in Fig. 7.

In the present embodiment, the rotation axis of self-powered motor 41 and the rotation axis of drive shaft 43 are parallel to each other, and have cross To interval.The pivot center 101 of limiting section 64 (64 ') is substantially conllinear with the axis of the output shaft of the self-powered motor 41.Due to During height-regulating, height-regulating mechanism is rotated around pivot center 101, and self-powered motor 41 can also be rotated around pivot center 101.It will be certainly The axis and pivot center 101 for driving the output shaft of motor 41 are coaxially disposed, so that self-powered motor 41 is around rotation axis during being turned up Line 101 rotates, i.e., self-powered motor 41 rotates during height-regulating around own axes, therefore the movement of position will not occur, right The spatial design of body will not interfere, and be conducive to the reasonable Arrangement of structure.

Specifically, limiting section 64 (64 ') includes the limit shaft that is fixedly installed on height-regulating support part 61,61 ', on body 1 It is provided with the mounting hole for accommodating limit shaft, limit shaft can rotate in mounting hole.

Due to during height-regulating, reduction gearbox 42 and self-powered motor 41 all rotate movement, and body 1 is in relatively not The position of change, therefore the positioning of reduction gearbox 42 and self-powered motor 41 cannot be fixed on body 1 using conventional method.This reality It applies in example, during height-regulating, connecting rod 62 is turned up and the position of reduction gearbox 42 and self-powered motor 41 is relatively stationary, by reduction gearbox 42 are fixedly connected with connecting rod 62 is turned up, and reduction gearbox 42 has the first installation position connecting with drive shaft 43, and are supported on height-regulating and connect The second installation position on bar 62, the second installation position is by connector 45 and connecting rod limit connection, the first installation position and second is turned up Installation position biases pre-determined distance.42 one end of reduction gearbox connects drive shaft 43, and the other end, which is fixed on, to be turned up on connecting rod 62, constitutes pair The reliable location of self-powered motor 41 and reduction gearbox 42.

The receiving portion of receiving self-powered motor 41 is provided on body 1, self-powered motor 41 is rotatably set in receiving portion. Receiving portion is used to limit the circumferential of self-powered motor 41 and shakes, and circumferential protection is formed to self-powered motor 41, prevents sundries from entering At self-powered motor 41, self-powered motor 41 is polluted.

In another embodiment, Fig. 8 is please referred to, guide groove (55,55 ') can also be the fluting of other shapes.The embodiment Essentially identical with first embodiment, difference is only that the structure of main clutch discs and guide groove, succinct in order to describe, identical knot Structure uses identical label, does not repeat.In the embodiment, guide groove 55 ' is provided in main clutch discs 51 ', guide groove is Surface groove 55 ', surface groove 55 ' include pushing inclined-plane and opposite with inclined-plane is pushed with what the axis of drive shaft 43 had certain angle Opening 550 ', guide part is suitable for the latch structure 6 for pushing inclined-plane cooperation with surface groove 55 ', and latch structure 6 matches with inclined-plane is pushed Conjunction pushes main clutch discs 51 towards the movement of secondary 7 direction of clutch discs, and latch structure 6 can be freely accessible to and be moved back by the opening 550 ' Surface groove 55 ' out, it is convenient for assembly.

In another embodiment, drive shaft 43 and the non-coaxial setting of driving wheel 13.Fig. 9 and Figure 11 specifically are please referred to, it should Embodiment has similar structure with above-described embodiment, and difference will be described specifically below, convenient for statement, identical knot Structure is not repeated using expression is identically numbered.In this embodiment, hand pushed wheel type vehicle include two driving wheels 13, two The structure having the same of driving wheel 13, it is succinct in order to describe, herein only to a driving wheel 13 and corresponding first clutch 5 Connection structure is introduced.

Fig. 9 and Figure 10 are please referred to, driving wheel 13 further includes teeth portion 131 arranged on the hub and is configured to and the teeth portion The pinion gear 132 of 131 engagements.Specifically, teeth portion 131 is configured to take shape in the ring gear on wheel hub, pinion gear 132 and ring gear Engagement, is transferred to driving wheel 13 for rotary motion by deceleration, for further decreasing revolving speed, improves driving torque.Secondary clutch Disk 7 is fixedly connected with pinion gear 132.Here being fixedly connected can be screw and fixes, sells the fixed forms such as fixed, naturally it is also possible to It is that secondary clutch discs and pinion gear are integrally formed.When clutch is in meshing state, 43143 driving pinion 132 of drive shaft around First direction rotation, and then the driving wheel is driven to advance.Specifically, secondary clutch discs 7 are integrally formed with pinion gear 132.Small tooth Take turns 132 it is pivotable be connected in drive shaft 43, for this specific embodiment, the both ends of drive shaft 43 are arranged in two masters respectively In correspondence pinion gear 132 on driving wheel 13.

Please refer to Fig. 9 and Figure 11, further include height-regulating mechanism in the present embodiment, height-regulating mechanism include be turned up connecting rod 62 and point Two height-regulating support parts 161 not being fixedly connected with the both ends that connecting rod 62 is turned up.Height-regulating support part 161 includes and driving wheel 13 support shafts 160 connected and the interconnecting piece for connecting with drive shaft 43, driving motor 41 are fixedly installed on body 1, are driven Moving axis 43 is pivotable to be set on body 1.Support shaft 160 is connect by bearing 105 with driving wheel 13.Fig. 9 and Figure 11 difference Show the height-regulating mechanism of different operating height and the status diagram of driving assembly 4.During height-regulating, height-regulating support part 161 Axis around drive shaft 43 rotates, and changes the position that pinion gear 132 is engaged with ring gear, and then adjusts support shaft 160 upper The position of the upward relative drive shaft 43 in lower section adjusts work to change driving wheel 3 with ground contact points with respect at a distance from body 1 Make the height of component.Specifically, please referring to Fig. 9, the position of engagement of pinion gear 132 and ring gear 131 is under support shaft 160 Side, distance of the drive shaft 43 apart from 13 touchdown point of driving wheel is smaller, when operation height-regulating mechanism, makes pinion gear 132 and ring gear When higher point engages, drive shaft 43 increases at a distance from 13 touchdown point of driving wheel, therefore body 1 becomes with respect to the distance of touchdown point Greatly, that is, relative to Fig. 9, working depth shown in Figure 11 is bigger.

In this embodiment, since the pinion gear 132 and ring gear of driving wheel 13 realize primary speed-down, reduction gearbox 42 Reduction ratio can suitably do it is small, specifically, reduction gearbox 42 include primary planet pinion slow down and level-one parallel gears slow down.Due to driving Moving axis 43 and driving wheel 13 are eccentric settings, and drive shaft 43 is arranged in body, and self-powered motor 41 is fixedly installed on body, When height-regulating, the operable position of engagement for changing pinion gear 132 and ring gear of height-regulating mechanism, so as to adjust support shaft 160 and The height of body 1 in the up-down direction, it can be seen that, drive shaft 43 is constant with respect to the upper and lower position of body 1 when height-regulating, only actively Wheel 13 moves up and down, and setting in this way facilitates the positioning of self-powered motor 41 and reduction gearbox 42 and the layout of complete machine mechanism.

Since in the respective embodiments described above, when self-powered motor 41 is (shutdown) out of service, drive shaft 43 is stopped rotating, made User needs to continue to press on the direction operation that hand pushed wheel type vehicle 10 marches forward, and driving wheel 3 will continue first direction forward and rotate, Can just clutch be made to disengage.In the present embodiment, being additionally provided with revolves self-powered motor 41 to the direction contrary with " driving " The control device turned, control device activate automatically immediately when hand pushed wheel type vehicle has stopped and has been more than predetermined time interval, main Clutch discs 51 are driven rearward by 41 device of self-powered motor, so that in parking, the disengagement of clutch automatically occurs, are allowed Operator only by pushing hand pushed wheel type vehicle forward or by being driven rearward hand pushed wheel type vehicle come move vehicle, and It does not need to overcome meeting mechanical resistance as caused by the clutch engaged, there is no any risks for destroying mechanical mechanism.

First clutch 5 can it is rotary-actuated along first direction forward by drive shaft 43 and be in meshing state, and It can be in disengaged condition along the backward second direction rotation inactivation opposite with first direction by drive shaft 43, self-powered motor 41 It is configured to driving drive shaft 43 to be rotated in a first direction to drive the rotation of driving wheel 3 that hand pushed wheel type vehicle is made to advance, and is suitable for Drive shaft 43 is driven to rotate to second direction so that the first clutch 5 disengages.First clutch 5 makes self-powered motor 41 and master The linkage of driving wheel 3 and disengagement, it should be noted that: linkage and disengagement do not exist simultaneously.

In the present embodiment, driving assembly 4 further includes 41 control device of self-powered motor, control device include for directly or Person detects the detection part that the rotation driving of self-powered motor 41 stops indirectly, when detection part detects the rotation of self-powered motor 41 After the dynamic stopping of transhipment, by predetermined time interval, control device controls self-powered motor 41 and drives drive shaft 43 along second party backward To rotation preset time, so that clutch is changed into disengaged condition.Specifically, for controlling self-powered motor 41 along backward second The control device that direction rotates is the control device activated manually.

Referring to Figure 12 to 14, in another embodiment, electromagnetic driver 8 can be set on driving wheel 3, pass through electricity Magnetic driving part 8 drives main clutch discs 51 in drive shaft 43 towards the movement of the direction of driving wheel 3 so that second field of conjugate action 531 and first The field of conjugate action 521 engages.In the embodiment, electromagnetic driver 8 includes hot-wire coil 81 and magnet 82, and hot-wire coil 81 is located at driving On axis 43, magnet 82 is fixed in main clutch discs 51, the magnetic direction after magnetic direction and the hot-wire coil energization of the magnet 82 It is identical, after hot-wire coil 81 is powered, magnetic field is generated, magnet 82 is pushed master far from hot-wire coil 81 by the repulsive force in magnetic field Clutch discs 51 are moved along the axis of drive shaft 43 up towards secondary 7 direction of clutch discs in drive shaft 43；In other embodiments, lead to Electric coil can be not arranged in drive shaft 43, can be fixed on the side of magnet for realizing main clutch discs 51 are pushed； Electromagnetic driver can also be only hot-wire coil, which is arranged in the side of the first engaging section, and main clutch discs are Magnetic material, when hot-wire coil be powered after, generate magnetic field, main clutch discs 51 it is magnetic field force induced in drive shaft 43 along drive shaft 43 Axis is mobile up towards secondary 7 direction of clutch discs.Referring to Figure 13, clutch is in disengaged condition, main clutch discs 51 and secondary clutch Disk 7 disengages, and after self-powered motor starting, hot-wire coil 81 is powered, and generates magnetic field, magnet 82 by magnetic field repulsive force far from live wire Circle 81 makes to lead to push main clutch discs 51 to move along the axis of drive shaft 43 up towards secondary 7 direction of clutch discs in drive shaft 43 Clutch discs 51 are engaged with secondary clutch discs 7, such as Figure 14, and main clutch discs 51 and secondary clutch discs 7 are in engagement state, and clutch will be certainly It drives motor and driving wheel 3 links, driving wheel 3 rotates clockwise, and hand pushed wheel type vehicle moves forward.The energization of hot-wire coil 81 Time is that main clutch discs 51 is made to start to engage the required time with secondary clutch discs 7, the live wire if the self-powered motor shutdown of midway Circle 81 powers off at once.When self-powered motor is (shutdown) out of service, drive shaft 43 is stopped rotating, at this point, hot-wire coil 81 has powered off, User continues to press on the direction operation that hand pushed wheel type vehicle marches forward, and driving wheel 3 will continue to rotate clockwise, and driving wheel 3 will Secondary clutch discs 7 are driven to rotate clockwise, and since self-powered motor is out of service at this time, then drive shaft 43 will be unable to drive master Clutch discs 51 rotate clockwise, and the first engaging section is rotated relative to the second engaging section, and the first engaging section and the second engaging section will occur Dislocation, when the first pushing surface 522 on the first engaging section is moved with respect to the second pushing surface 532, the first pushing surface 522 pushes the Two pushing surfaces 532 so that main clutch discs 51 have one it is biggish push out driving and a lesser circular motion power, thus Winner's clutch discs 51 and secondary clutch discs 7 are separated, Fig. 5 is referred to, realizes and disengages function, self-powered motor and driving wheel 3 disconnect, main Driving wheel 3 can be freely rotated, and be not driven the influence of component 4.

Please also refer to Figure 15 a, the first engaging section and the second engaging section are horizontal engagement, by adopting in above embodiment Scheme, specifically: along the axial direction of drive shaft 43, the extension line of first field of conjugate action 521 of the first engaging tooth 52, the second engagement The extension line of second field of conjugate action 531 of tooth 53 is parallel with the axis of drive shaft 43, the extension line of first field of conjugate action 521, second Angle of the extension line of second field of conjugate action 531 of engaging tooth 53 between drive shaft 43 is 0 °.Certainly, in other embodiments In, such as Figure 15 b, along the axial direction of drive shaft 43, extension line, the second engaging tooth 53 of first field of conjugate action 521 of the first engaging tooth 52 The extension line of second field of conjugate action 531 angle α is formed with the axis of drive shaft 43, and the α is greater than 0 ° and less than 30 °, preferably , α is greater than 0 ° and less than 20 °, and more preferably, α is greater than 0 ° and less than 10 °.By the way that angle α is set smaller than 45 °, so as to The component that engagement direction is formed on first field of conjugate action, second field of conjugate action, keeps engagement tighter, is not easy to disengage.

Referring to Figure 16, for electromagnetic driver 8 is arranged, in order to enable the second engaging section and the first engaging section quickly take off It opens, which can also include the elastic device 9 for mutually separating the first engaging section and the second engaging section, the elasticity Device 9 can be the spring being arranged between main clutch discs 51 and driving wheel 3, more preferentially, spring can be arranged it is main from It closes between disk 51 and driving wheel 3.

To sum up, above-mentioned hand pushed wheel type vehicle is being driven by setting clutch by the main clutch discs 51 of the clutch The axis of axis 43 is upwardly so that the second engaging section of clutch and the first engaging section are engaged and disengaged, so that self-powered Motor 41 can drive drive shaft 43 to rotate, and hand pushed wheel type vehicle moves forward, or disengage self-powered motor 41 and driving wheel 3, Twisting resistance is reduced, energy consumption is reduced, convenient for turning to, ease for use is good；In addition, compared with prior art, easy to operate, repacking side Just, overall structure is relatively easy.

Hand pushed wheel type vehicle can also be hand-pushed snow plough, the hand pushed wheel types vehicle such as hand scavenging machine.

Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance Shield all should be considered as described in this specification.

Only several embodiments of the present invention are expressed for above embodiments, and the description thereof is more specific and detailed, but can not Therefore it is construed as limiting the scope of the patent.It should be pointed out that for those of ordinary skill in the art, Under the premise of not departing from present inventive concept, various modifications and improvements can be made, and these are all within the scope of protection of the present invention. Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims

1. a kind of hand pushed wheel type vehicle, including body, the idler wheel being pivotally disposed on the body, the idler wheel includes two A driving wheel, the hand pushed wheel type vehicle further include driving assembly and the connection driving wheel and the driving component from Close mechanism, the clutch include secondary clutch discs connect with the driving wheel and driveably and it is described pair clutch discs at In meshing state or the main clutch discs of disengaged condition, the clutch and the driving component cooperate jointly can be achieved the master Driving wheel can be driven and drive the hand pushed wheel type vehicle mobile；

It is characterized in that, the driving component includes self-powered motor and the outside power transmission of power by the self-powered motor Drive shaft, two driving wheels are connected to the both ends of the drive shaft accordingly respectively；

When the clutch is in the meshing state, the drive shaft is able to drive the driving wheel along first direction forward Rotation, the clutch are in the disengaged condition, and the driving wheel can be freely rotated；

The quantity of the clutch is two, respectively connects the first clutch of the driving wheel and the drive shaft Structure and the second clutch for connecting another described driving wheel and the drive shaft, in the extending direction of the drive shaft On, first clutch and second clutch are arranged independently of one another.

2. hand pushed wheel type vehicle as described in claim 1, which is characterized in that described on the extending direction of the drive shaft One end of the drive shaft is arranged in first clutch, and the other end of the drive shaft is arranged in second clutch.

3. hand pushed wheel type vehicle as described in claim 1, which is characterized in that described on the extending direction of the drive shaft Axial distance and two masters between the outermost face of first clutch and the outermost face of second clutch The ratio of axial distance between the outermost face of driving wheel is greater than 1/2 and is less than or equal to 1.

4. hand pushed wheel type vehicle as described in claim 1, which is characterized in that the drive shaft is axis made of an one integral piece, The both ends of the drive shaft are corresponding to be arranged in the corresponding driving wheel.

5. hand pushed wheel type vehicle as described in claim 1, which is characterized in that the drive shaft is coaxially set with the driving wheel It sets.

6. hand pushed wheel type vehicle as claimed in claim 5, which is characterized in that the pair clutch discs are fixedly connected on the active It is integrally formed on the wheel hub of wheel or with the wheel hub.

7. hand pushed wheel type vehicle as claimed in claim 5, which is characterized in that the hand pushed wheel type vehicle further includes for adjusting The height-regulating mechanism of the distance in the up-down direction of the relatively described drive shaft of the body, the height-regulating mechanism include that connecting rod is turned up With two height-regulating support parts being connected respectively with the both ends that connecting rod is turned up, the both ends of the drive shaft are arranged in respectively On the corresponding height-regulating support part, each height-regulating support part can be pivoted relative to the body around a pivot center, The drive shaft is intervally installed with the pivot center, to realize that the drive shaft can be circumferential around the pivot center Rotation.

8. hand pushed wheel type vehicle as claimed in claim 7, which is characterized in that the drive shaft is around the pivot axis In the process, the position of the relatively described body of the self-powered motor is constant always.

9. hand pushed wheel type vehicle according to claim 7, which is characterized in that the axis of the output shaft of the self-powered motor with The pivot center essentially coincides.

10. hand pushed wheel type vehicle as claimed in claim 7, which is characterized in that the driving component further includes being originated from power For the drive motor power transmission to the transmission mechanism of the drive shaft, the transmission mechanism concrete configuration is reduction gearbox, described Reduction gearbox has and the first installation position of the driving axis connection and the second installation position being supported on the height-regulating connecting rod, institute It states the first installation position and second installation position offsets each other pre-determined distance.

11. hand pushed wheel type vehicle as described in claim 1, which is characterized in that the drive shaft and the driving wheel are non-coaxial Setting, the driving wheel further include teeth portion arranged on the hub and are configured to the pinion gear engaged with the teeth portion, the drive Moving axis is arranged in the pinion gear, and the pair clutch discs are fixedly connected with the pinion gear, is nibbled when the clutch is in Conjunction state, the drive shaft drives the pinion gear to rotate around first direction by the clutch, to drive the active Wheel advances.

12. hand pushed wheel type vehicle as claimed in claim 11, which is characterized in that the teeth portion is configured to and the driving wheel The ring gear or gear wheel of axis coaxle setting, the number of teeth of the gear wheel are greater than the number of teeth of the pinion gear.

13. hand pushed wheel type vehicle as described in claim 1, which is characterized in that the self-powered motor configurations are to drive the drive Moving axis is rotated along the first direction to drive the driving wheel to rotate forward, and can drive the driving axial and described the One contrary second direction rotates so that the clutch switches to the disengaged condition.

14. hand pushed wheel type vehicle as claimed in claim 13, which is characterized in that the driving component further includes self-powered motor control Device processed, the self-powered controller for motor include driving for directly or indirectly detecting the stopping of the self-powered motor The detection part that the driving wheel is rotated along the first direction, when the detection part detects the stopping of the self-powered motor It is rotated along the first direction, the self-powered controller for motor controls the self-powered motor and drives institute within the predetermined time It states drive shaft and rotates preset time along the second direction, so that the clutch is changed into the disengaged condition.

15. hand pushed wheel type vehicle as described in claim 1, which is characterized in that set in the main clutch discs and the drive shaft It is equipped with the sliding assembly that the main clutch discs can be made to move axially in the drive shaft, the sliding assembly includes that setting exists Guide part in the drive shaft and it is provided in the main clutch discs and is configured to the guide groove cooperated with the guide part, when The drive shaft is driven to be rotated forward along first direction, and the guide part and the guide groove cooperate the realization master jointly Clutch discs moves from the position far from the secondary clutch discs to close to the position of the secondary clutch discs, formed the main clutch discs and The pair clutch discs are in the meshing state.

16. hand pushed wheel type vehicle as described in claim 1, which is characterized in that the clutch further includes electromagnetic driver, The electromagnetic driver can only be rotated forward along first direction by the self-powered motor and be activated, to drive the main clutch The direction of disk towards the secondary clutch discs is moved to the clutch and is in the meshing state.

17. hand pushed wheel type vehicle as described in claim 1, which is characterized in that the clutch further includes in the clutch Mechanism hinders the damping unit of the rotary motion of the main clutch discs, the damping unit and the main clutch during disengaging Disk abuts.

18. a kind of hand pushed wheel type vehicle, including body, the idler wheel being pivotally disposed on the body, the idler wheel includes At least one driving wheel, the hand pushed wheel type vehicle further include driving assembly and the connection driving wheel and the driving group The clutch of part, the clutch include the secondary clutch discs being connect with the driving wheel and driveably with it is described it is secondary from The main clutch discs that disk is in meshing state or disengaged condition are closed, the clutch and the driving component cooperate jointly can be achieved The driving wheel can be driven and drive the hand pushed wheel type vehicle mobile；

It is characterized in that, the driving component includes self-powered motor and the outside power transmission of power by the self-powered motor Drive shaft；

When the clutch is in the meshing state, the drive shaft is able to drive the driving wheel along first direction forward Rotation；When the clutch is in the disengaged condition, the driving wheel can be freely rotated；

19. hand pushed wheel type vehicle as claimed in claim 18, which is characterized in that the number of the driving wheel is two, specifically For left rear wheel and off hind wheel, the number of the clutch is two, respectively connects the left rear wheel and the drive shaft First clutch and the second clutch for connecting the off hind wheel and the drive shaft, in the extension side of the drive shaft Upwards, first clutch and second clutch are arranged independently of one another.

20. hand pushed wheel type vehicle as claimed in claim 19, which is characterized in that the drive shaft is made of an one integral piece Axis, one end of the drive shaft are arranged in the left rear wheel, and the other end of the drive shaft is arranged in the off hind wheel.

21. hand pushed wheel type vehicle as claimed in claim 19, which is characterized in that the drive shaft and the left rear wheel, described Off hind wheel is coaxially disposed.

22. hand pushed wheel type vehicle according to claim 19, which is characterized in that it is described pair clutch discs and the left rear wheel, The off hind wheel is coaxially disposed.