CN205706805U - Brake mechanism and handcart comprising same - Google Patents

Abstract

The utility model relates to a arrestment mechanism and including this arrestment mechanism's handcart. The brake mechanism has an engagement device movable between a first position and a second position. In the first position, at least a portion of the engagement device engages at least one wheel of the cart. In the second position, the engagement device is disengaged from the wheel to enable rotation of the wheel of the cart relative to the engagement device. The brake mechanism also has an actuator that interacts with the engagement device and is rotatable about an axis such that when the actuator is rotated about the axis, and when the actuator is further rotated about its axis, the engagement device moves from the second position to the first position. Also included is a moving means for moving the brake relative to the engaging means.

Description

A kind of arrestment mechanism and the handbarrow including this arrestment mechanism

Technical field

The present invention relates to a kind of arrestment mechanism and include the handbarrow of this arrestment mechanism, and more particularly, Relate to a kind of for handbarrow or the arrestment mechanism of stroller.

Background technology

Handbarrow includes having three wheels or the framework of four wheels, and bracket, and it is configured to prop up Hold baby or child so that occupant can easily cosily be transported by the adult guarded.Owing to handbarrow has There is wheel, and the most freely roll, it is generally desirable to there is arrestment mechanism so that handbarrow can be tieed up Hold in fixed position, and prevent handbarrow from moving the most on the sloped surface.

There is some arrestment mechanisms, it is activated to lock one or more wheels relative to framework by pedal And limit handbarrow and move.This type of mechanism a kind of includes the cable operational brake activated by pedal, institute State a pedal side being arranged into cart frame in rear wheel.Cable operational arrestment mechanism Problem include being difficult to lock more than one wheel in single pedal travel, in order to make mechanism correct simultaneously Ground duty line length must accurately, and mechanism can be difficult to manufacture, and pedal can be relative to the leading lower limb of user Position unhandily, and rupture along with using hawser to elapse the most in time continuously.

It addition, existing pedal operation arrestment mechanism tends to be difficult to depart from.A kind of this type of institution requests user Advance the bottom of pedal in an upward direction, in order to make arrestment mechanism depart from.In view of needs by make foot to Upper pivot carrys out generative power, and wherein pedal is extremely pressed close to relative to ground and it needs to by pushing away towards ground Entering handbarrow to the upward force resisting on pedal, therefore the operation of the type can be difficult for user. Further, it is necessary to advancing the bottom of pedal in an upward direction can be pain for a user, particularly If they are barefooted or wear peep-toe sandals.Finally, the bottom of pedal is prone to dirty, this then can The foot or the shoes that cause user are dirty during departing from operation.

This type of solution of the one of problem above is to include extension, and it is dashed forward from the upper part of pedal Go out and be arranged such that described extension makes to ride when inwardly cart frame advances extension Plate is pivoted up and so that arrestment mechanism departs from.But, this causes the heavy and factitious shifting of user Dynamic, and it is positioned such that it is difficult to reach and activates exactly.

It is an object of the invention to provide the arrestment mechanism of improvement.

Summary of the invention

In the first aspect, it is provided that the brake of a kind of handbarrow for having at least one wheel Structure, described arrestment mechanism includes the engagement device that can move between the first position and the second position, its In in primary importance, at least some of of described engagement device engages with the wheel of handbarrow, and its In in the second position, described engagement device from wheel depart from so that the wheel of handbarrow is relative to joint Device rotates；

Actuator, described actuator docks with engagement device and can pivot so that when actuator around When axle rotates, engagement device moves to the second position from primary importance, and when actuator enters one around its axle When step rotates, engagement device moves to primary importance from the second position；And

For moving the mobile device of actuator relative to engagement device, wherein mobile device can be with actuator Couple, and when mobile device couples with actuator, apply external force by user to mobile device and make Actuator is in rotary moving, and makes engagement device movement between the first position and the second position.

Advantageously, can be conciliate in lock arrangement by identical actuating operation according to the arrestment mechanism of the present invention Switch between lock configuration.Therefore, do not require that lock operation is switched to solve according to the arrestment mechanism of the present invention The reversing of lock configuration.Therefore, the foot of the foot of user is may be arranged such that according to the arrestment mechanism of the present invention The end, can be used for arrestment mechanism locking and unlocks, thus prevents from using the upper surface of foot and/or avoiding stupid Clumsy, the painful and/or solution latching operation of confusion.

Arrestment mechanism may be arranged such that mobile device does not makes when mobile device separates from actuator Actuator is in rotary moving.

Actuator and engagement device are arranged such that actuator is rotated in the rotation away from actuator around axle The side of plane moves up engagement device.

Actuator and engagement device may be arranged such that the in rotary moving of actuator is converted into engagement device At least one of linear movement.

Can pivoting at least partially of mobile device.

Can rotating around the axle identical with the rotary shaft of actuator at least partially of mobile device.

When mobile device and actuator are in released state, mobile device can be around identical rotation with actuator Rotating shaft is the most rotatable.Mobile device can include the lever arm for receiving revolving force.Lever arm can wrap Include foot operating pedal, wherein apply revolving force by the foot of user to foot operating pedal.Mobile device can Move between the first position and the second position, and wherein mobile device deflection primary importance.

Arrestment mechanism can farther include to be arranged in actuator and mobile device at least some of between connection Connection device, and wherein coupling arrangement is arranged to, when mobile device moves to second from primary importance When putting, mobile device is connected to actuator.

A part for mobile device can be arranged and dock with actuator, and butted part can have at least one Plant structure, and may be shaped at least partially of described structure engages with coupling arrangement, wherein works as movement Device is when primary importance moves to the second position, and actuator is via the structure of coupling arrangement Yu butted part Joint and move with described device.Structure may be shaped such that when mobile device moves from the second position During to primary importance, structure does not engage coupling arrangement.

Actuator can include the actuation surfaces limited around the rotary shaft of actuator, and described actuation surfaces is arranged For adjacent with engagement device and contact, wherein actuation surfaces limits wherein engagement device and can be positioned at joint dress Recess in the primary importance put.Actuation surfaces can limit for engagement device is supported on engagement device Platform in the second position.

Actuation surfaces can limit the inclined cam surface between recess and platform, and wherein cam face is configured For when actuator rotates up in the side from recess to platform, being advanced to put down from recess by engagement device Platform.Antelabium can be formed, in order to when engagement device and contact with platform, anti-between cam face and platform Only actuator rotates up in the side from platform to recess.

Actuation surfaces can farther include the second inclined cam surface, and described second inclined cam surface is from flat Platform extends to recess and is shaped as when actuator rotates up in the side from platform to recess, advances Engagement device leaves the second position and further away from primary importance.Described inclined cam surface or each incline Tiltedly cam face can be spiral.

Engagement device can be partial to actuation surfaces.

Engagement device can include follower and latching, and wherein said latching is in the direction away from follower Upper deflection.

Arrestment mechanism can farther include receptor, and wherein receptor can pivot, and wherein when connecing Receptor is stoped to be rotated about their axes when locking device engages with receptor.Receptor can include a part for wheel Or can fix and in use be arranged to relative to wheel so that when engagement device connects with receptor During conjunction, wheel is stoped to be rotated about their axes.

According to the second object of the present invention, it is provided that include the handbarrow of arrestment mechanism, arrestment mechanism includes Moveable engagement device between the first position and the second position, wherein engagement device engages handbarrow At least one wheel is to prevent wheel from rotating, wherein in primary importance, and engagement device at least some of Engage with at least one wheel of handbarrow, and the most in the second position, engagement device takes off from wheel From so that wheel can rotate relative to engagement device, and arrestment mechanism farther includes actuator, described cause Dynamic device docks with engagement device and can pivot so that when actuator rotates around described axle, engages dress Put and move to the second position from primary importance, and when actuator further rotates around its axle, engage dress Putting and move to primary importance from the second position, arrestment mechanism farther includes for moving relative to engagement device The mobile device of dynamic actuator, wherein mobile device can couple with actuator, and when mobile device and cause When dynamic device couples, apply external force by user to mobile device and make actuator in rotary moving, and make to connect Locking device movement between the first position and the second position.

According to the third aspect of the invention we, it is provided that include the hand push of the arrestment mechanism according to first aspect Car.

Accompanying drawing explanation

Below by the most by way of example and being preferable to carry out of the present invention is further explained in detail with reference to the accompanying figure Example, in the accompanying drawings:

Fig. 1 is the perspective view with the handbarrow of arrestment mechanism according to an embodiment of the invention；

Fig. 2 is the perspective view of the parts of the arrestment mechanism shown in Fig. 1；

Fig. 3 is the partial, exploded perspective view of the parts shown in Fig. 2；

Fig. 4 is the optional perspective view of the parts shown in Fig. 3；

Fig. 5 is the further optional perspective view of the parts shown in Fig. 3；

Fig. 6 is the enlarged side view of a part for the parts shown in Fig. 2；

Fig. 7 for when be in can arrangement time, the enlarged side view of each several part shown in Fig. 6；

Fig. 8 is the perspective view of the parts shown in the Fig. 2 with shell and support；

Fig. 9 is the decomposition diagram of the parts shown in Fig. 8；

Figure 10 is the viewgraph of cross-section of a part for the handbarrow including the parts shown in Fig. 2 and Fig. 8；

Figure 11 is the enlarged cross-sectional view of a part for the framework shown in Figure 10；

Figure 12 is when being in a kind of configuration, including the backsight of the cart frame of embodiments of the invention Figure；

Figure 13 for when be in can arrangement time, the rearview shown in Figure 12；

Figure 14 is for when being in released state, according to the perspective view of a part for the arrestment mechanism of the present invention；

Figure 15 is when being in lock arrangement, the perspective view of the part shown in Figure 14；And

Figure 16 is when being in the latched position relevant to the wheel associated by arrestment mechanism, shows in Figure 14 The perspective view of the part gone out.

Detailed description of the invention

The present invention generally falls into the arrestment mechanism for handbarrow, and described arrestment mechanism is arranged to handbarrow One or more wheel lock and unblock, to prevent the surface of handbarrow support trolley along it from rolling Dynamic.

Referenced in schematic, it is shown that the exemplary braking mechanism 1 of handbarrow 100.Arrestment mechanism 1 includes activating Device 3, engagement device 5 and mobile device 7, the mobile device in the embodiment shown in it is by molding The hub of the carnival hat shape that material is made or the form of axle ring 7.Arrestment mechanism farther includes hollow rigid tube 9, its middle shaft collar 7 is fixedly secured to one end of this hollow rigid tube 9 so that flange 11 base of axle ring The axis of pipe 9 is vertically extended outwardly away from basis.

The end face 13 of axle ring 7 includes recess 15, during wherein actuator 3 can be located at this recess so that axle ring The part of 7 is around the part of actuator 3.Actuator 3 can be made up of moulding material, and wraps as shown Include substantially cylinder-shaped hollow body part 17 and extend radially outwardly substantially from main part 17 Cylindrical actuated piece 19.It will be appreciated that without departing from the scope of the invention, other materials With configuration by for possible.Actuated piece 19 includes inner face 21 and outside 23, and wherein this inner face 21 is substantially Plane and the arranged recess 15 with axle ring 7 inwall docks, and 23 is intended to and engages dress outside this Put 5 docking.

Engagement device 5 includes banking pin 25 and accommodates the substantially cylinder-shaped hollow banking pin of banking pin 25 Follower 27.Follower 27 has opening and Guan Bi end, and wherein banking pin 25 highlights from this opening And described Guan Bi end has the taper surface 28 being arranged to dock with actuator 3.Banking pin 25 includes first Section 29 and the second section 31, the most each for substantially cylindrical in shape.The diameter of the first section 29 Diameter more than the second section 31 so that the intersection shape between the first section 29 and the second section 31 Become step piece 33.Banking pin 25 is in use arranged to the hole 35 extending through in respective holder 37. Choose the diameter diameter more than the second section 31 in hole 35 diameter less than the first section 29 so that only Second section 31 can extend through hole 35.Banking pin 31 can extend through the degree in hole 35 by step piece 33 with the retraining supporting (abutment) of the sidewall of support 37.

The inside of follower 27 is shaped as the outside shape of the first section 29 substantially conforming to banking pin 25 Shape, and thus banking pin 25 is limited to enter and leave the substantial linear motion of follower 27.Spiral shell Rotation spring 39 is arranged on the interior of the follower 27 between the first section 29 and the end wall 29 of banking pin 25 Portion, so that banking pin 25 deflection, in order to highlight from the opening of follower 27.

The banking pin 25 of engagement device 5 is arranged in use interact with brake drum 41.Braking Drum 41 includes substantially cylinder-shaped hub, and it forms the core of wheel 43, is rear car in this case Wheel.Brake drum 41 is the most rotatable relative to actuator 3 around the axle of wheel 43.The braking described Drum 41 has substantially planar sidewall 45 and is formed at the multiple holes in constructing with the ring about axle 43 Or opening 47.The Part II 31 of hole 47 shaped reception banking pin 25 at least some of.Ring structure The diameter made is chosen to banking pin 25 and essentially corresponds to around the curved path of the rotary shaft of actuator 3 Curved path in ring structure.Therefore, rotate relative to the brake drum 41 of wheel 43 when actuator 3 Time, banking pin 25 becomes substantially to be directed at each continuous hole 47.

Wheel 43 is attached to elongate rod 49 by peg 51, and described peg 51 allows wheel 43 and braking Drum 41 rotates relative to bar 49.Therefore, bar 49 serves as wheel 43 and the wheel shaft of the second wheel 53 Or mandrel, described wheel 43 and the second wheel 53 are respectively arranged at the opposite end of wheel shaft 49.Activate Device 3, bobbin 9 and axle ring 7 are around wheel shaft 49 arranged concentric, in order to share identical rotary shaft.Bobbin 9 and axle ring 7 can independently rotate relative to wheel shaft 49.But, actuator 3 is fixedly attached to Wheel shaft 49 is so that actuator 3 and wheel shaft 49 as one man rotate.

Lever arm 55 is fixedly attached to bobbin 9 at the approximately mid-point of bobbin 9.Therefore, when power is executed When being added to lever arm 55, bobbin 9 and thus axle ring 7 as one man rotate.Lever arm 55 uses foot-operated The form of plate also is shaped to provide the platform receiving the power applied by the foot of user.Pedal 55, bobbin 9 form the rotary components for making actuator 3 rotate together with axle ring 7.Rotary components can be around wheel shaft 49 amounts rotated are limited by stop part, and rotary components is limited at primary importance and second by this stop part Rotation between putting.Movement from primary importance to the second position is corresponding to the single stroke of rotary components.

Axle ring 7 can couple with actuator 3 via the ratchet 57 being pivotally attached to actuator 3.Ratchet 57 In being accommodated in the actuated piece 19 of actuator 3 and be pivotally attached the week of the outer wall near actuated piece 19 Boundary.The section of the outer wall of actuated piece 19 is removed or does not exists, to allow ratchet 57 to pivot and from actuating Part 19 extends radially outwardly.In primary importance, (wherein ratchet is included in the outer wall of actuated piece 19 to ratchet 57 In) and the second position (wherein ratchet extends radially outwardly or prominent from the outer wall section of actuated piece 19 Go out) between pivotably.Ratchet 57 is spring-loaded so that its deflection second position in prominent.Institute The ratchet 57 described in embodiment includes arrow-shaped tip, and its shape is chosen to ratchet 57 and axle The internal part of ring 7 can dock with engageable.

The medial wall of the recess 15 formed in axle ring 7 includes six structures 59, they shaped and configurations To interact with ratchet 57 at the different rotary stage of actuator 3 relative to axle ring 7.Each structure Including composition surface 61 and inclined plane 63.With composition surface 61 followed by inclined plane 63, followed by composition surface 61 Repeat pattern arrange structure around medial wall.Composition surface 61 extend outwardly away from axle ring 7 rotary shaft and Being arranged to provide to face, wherein the top of ratchet 57 can engage against this to face.Ratchet 57 exists Angle in the second position and layout and the position on composition surface 61 and shape are chosen to when axle ring 7 When rotating relative to actuator 3, ratchet 57 is moved and engaged in composition surface 61 towards ratchet 57, thus will Therefore rotary components is also connected to actuator 3 by axle ring 7.

Inclined plane 63 extends near axle from the edge on the composition surface 61 of the rotary shaft of farthest off-axis ring 7 The edge on the composition surface of the adjacent formation 59 of the rotary shaft of ring 7.Inclined plane 63 is arranged to when axle ring 7 When the side on the composition surface 61 away from structure 59 rotates up, right with ratchet 57 in the way of sliding contact Connect.The shape of inclined plane 63 is corresponding to tightening a section of curve, and it is chosen so as to be limited to axle ring 7 phase For the path along the top traveling of ratchet 57 during the rotation of actuator 3.

Owing to ratchet 57 is partial to the second position (wherein ratchet extends), therefore spine from actuated piece 19 part Pawl 57 is partial to inclined plane 63, with maintain axle ring 7 relative to during the rotation of actuator 3 with inclined plane The sliding contact of 63.The path limited by inclined plane 63 is chosen to activated by inclined plane 63 In the sidewall of part 19, ratchet 57 is advanced enough amounts, to allow inclining of the rotary shaft relative to axle ring 7 The innermost point on inclined-plane 63 exceedes ratchet 57, and thus allows connecing of ratchet 57 and next adjacent formation 59 This composition surface 61 is docked and engaged to conjunction face 61 phase.Arc between one composition surface 61 and adjacent bond face 61 The length in shape path is corresponding to the single stroke of rotary components.

Axle ring 7 and thus rotary components is partial to primary importance by torsion spring 65, this torsion spring 65 Surround the bobbin 9 of rotary components.One end 66 of spring 65 is installed to axle ring 7 via groove 67, and this is recessed Groove 67 is formed in the periphery wall of the flange 11 of axle ring 7.Therefore, when axle ring rotates, axle ring is installed End 66 moves with axle ring 7.The other end 68 of spring 65 is installed to shell 70 and is kept by shell 70 In position, this shell 70 is at least partially surrounding axle ring 7, actuator 3, engagement device 25 and bracket 37.When rotary components rotates to the second position from primary importance, the axle ring installation end 68 of spring 65 because of This rotates up in the side away from fixing end 68.Therefore, when removing the external force on rotary components, spring 65 advance rotary components to return to primary importance.

Actuator 3 is arranged between axle ring 7 and engagement device 5, will rotate group by engagement device 5 The in rotary moving of part is converted into linear movement.The outside of actuated piece 19 or surface 23 include that three are repeated to cause Dynamic region 72.With specific reference to Fig. 6 and Fig. 7, each activation region 72 be divided into four continuous and different Section: the first section 74 is corresponding to released state, and the second section 76 is corresponding to locking phase, the 3rd section 78 is phase-locked corresponding to solving corresponding to lock-out state and the 4th section 80.

With specific reference to Fig. 6, it can be seen that in the embodiment depicted, the first section 74 of activation region 72 Having relatively deep recess, follower 27 can be located in this recess.Second section 76 includes that spiral type is inclined Tiltedly cam surface 76a, this spiral type inclined cam surface 76a are being axially away from the recess of the first section 74 The side of bottom ramps upwardly into the region of the outside 23 farthest away from inner face 21, and anxious then towards inner face 21 Drop back into a relatively short distance to the 3rd section 78 acutely.3rd section 78 includes substantially planar or flat Platform 78a, this substantially planar or the platform 78a rotary shaft being substantially perpendicular to actuator 3.From second Section 74 forms antelabium 78b to drastically falling of the 3rd section 78, is wherein positioned at platform when engagement device When 78a is upper, prevents follower 27 and therefore prevent engagement device 5 from crossing this antelabium 78b.4th section 80 also include helical cam surface 80a, but this helical cam surface 80a is than the inclined plane of the second section 76 76a is the most shallow and more relaxes.

Referring generally to diagram, but with specific reference to Fig. 8, depict and include outside substantially cylinder-shaped main body 90 Shell 70, this main body 90 is made up of plastics or similar material, and it is fixing relative to wheel shaft 49.Shell The oval-shaped part 92 of 70 is prominent from the main body 90 of shell and extends around bracket 37.Bracket 37 He Shell 70 provides the anchor point that the section 94 of the framework 96 of handbarrow 100 is pivotably attached to together. Forming hole in the outside end of shell 70, wherein the narrower part 31 of banking pin 25 can extend through this Kong Bingyu brake drum 41 engages.

Illustrating in greater detail as in Fig. 9, engagement device 5 is comprised by lid 102, and this lid 102 wraps Include hollow cylindrical section 104, allow lid to be attached to the end plate 106 of shell 70, and from cylinder The tube section 108 that the side of section 104 extends and engagement device 5 can be advanced by it.Bobbin 108 is therefore It is constrained to vertically move by the movement of engagement device 5 so that actuator 3 revolves relative to engagement device 5 Turn.Layout of spring is between the wall of follower 27 and bracket 37, in order to make engagement device 5 towards actuating Outside 23 deflection of device 3.

In use, the starting point of arrestment mechanism is selected as unlocked position, and wherein engagement device 5 is positioned at In the recess of the first section 74 of actuation member 72, such as, as shown in Fig. 5 and Figure 14.In this position In putting, banking pin 25 is not sufficiently prominent to engage the hole brake drum 41 from shell 70, and Wheel 43,53 rotates freely.

When the wheel 43 of expectation locking handbarrow 100, user is on the ground relative to support trolley 100 Face press up downwards pedal 55.The downward rotatory force that applies on pedal 55 causes bobbin 9 Be rotated about their axes, this then cause axle ring 7 to rotate along with bobbin 9.The rotation of axle ring 7 causes hub to construct The composition surface 61 of 59 engages with the end of ratchet 57, so that axle ring 7 couples with actuator 3 and causes Rotary components and actuator 3 as one man rotate.The outside 23 of actuator 3 is therefore relative to engagement device 5 Rotating, this has the effect making the different sections of activation region 72 contact with engagement device 5.

When making rotary components be advanced to the second position from primary importance, make the second section of activation region 72 76 contact with engagement device 5.The inclined cam surface 76a of the second section 76 advances towards brake drum 41 and connects Locking device 5 so that banking pin 25 highlights further from shell 70 step by step.If the hole in drum 41 It is directed at banking pin 25, then during banking pin 25 continues and extend to the hole of brake drum 41, and thus prevents Brake drum 41 rotates and therefore prevents wheel 43 from rotating, until making engagement device 5 contact with platform 78a And be supported in latched position.

If the hole in drum 41 is not directed at banking pin 25 fully, then the end of banking pin 25 will To the sidewall to brake drum 41, and will be by inclined plane 76a towards brake drum 41 and further in system Continue to press on follower 27 around untie-sell 25, thus compress the bullet between follower 27 and banking pin 25 Spring.Become to be directed at banking pin 25 when wheel 43 somewhat rotates so that hole relative to engagement device 5 Time, by the spring worked between follower 27 and banking pin 25, banking pin is shifted onto in hole.

When release the pedal 55 time, rotary components returns to first by torsion spring 65 from the second position Put.Prevent actuator 3 from rotating in the opposite direction due to antelabium 78b and engagement device 5 to supporting, and And owing to axle ring 7 is no longer connected to actuator 3 via ratchet 57, therefore when rotary components is from the second position When rotating to primary importance, actuator 3 does not returns along with rotary components.The position of the pivot of ratchet 57 because of This keeps fixing relative to axle ring 7, when the axle ring 7 separated rotates relative to actuator 3, and described axle Ring 7 makes the inclined plane 63 of hub structure 59 contact with ratchet 57.When axle ring 7 continues to rotate from the second position During to primary importance, inclined plane 63 advances spine relative to the movement of ratchet 57 in the sidewall of actuated piece 19 Pawl 57.When ratchet 57 is in the border limited by the sidewall of actuated piece 19, inclined plane 63 can move Cross ratchet 57, until hub adjacent with the next one can be back into ratchet 57 from actuated piece 19 to construct 59 Composition surface 61 engages.

When expectation departs from arrestment mechanism 1 and allows wheel 43 again to rotate, by pedal 55 Apply external rotating power and again shift rotary components onto the second position from primary importance.Again, this have through Axle ring 7 is made to be connected to the effect of actuator 3 by ratchet 57, so that actuator 3 revolves with rotary components Turn.Actuator 3 makes inclined plane 80a and the follower of the 4th section 80 relative to the rotation of engagement device 5 27 contacts, engagement device 5 is pushed in brake drum 41 by further, until the 4th section crosses joint Device 5.The small skew of inclined plane 80a is intended to prevent violent due to handbarrow 100 of banking pin 25 Hitting, collide or vibrate and retract from brake drum 41, this may additionally result in actuator 3 towards solving lock-bit Put rotation.When the 4th section 80 crosses engagement device 5, arrange between follower 27 and bracket 37 Spring-advance engagement device 5 enter in the recess of the first section 74, it contracts from the hole of brake drum 41 Return banking pin 25, thus allow wheel 43 to rotate freely through.

55 permission rotary components of again releasing the pedal return to primary importance from the second position, thus repeat to lead to Cross its described mechanism being advanced ratchet 57 by inclined plane 63 in actuated piece 19, and allow inclined plane to move Dynamic ratchet 57 of crossing makes the composition surface 61 of ratchet 57 hub adjacent with next one structure 59 engage.

Therefore, the first stroke of rotary components is required from unlocked position, arrestment mechanism is transformed into locking bit Put (that is, first section the 74 to the second section 76 to the 3rd section 78), and the second stroke is required By arrestment mechanism from latched position be transformed into unlocked position (that is, the 3rd section 78 to the 4th section 80 to First section 74).

As shown in Figure 10, arrestment mechanism 1 farther includes to be arranged at each opposite end of wheel shaft 49 Second group of parts.Second group of parts is essentially similar to first group of parts.First axle ring 7 and the second axle Ring 207 is fixedly attached to each opposite end of bobbin 9, and the most as one man rotates.Similarly, One actuator 3 and the second actuator 203 are fixedly attached to wheel shaft 49, and as one man rotate.Therefore, The locking reconciliation latching operation located at either end is identical and operates in tandem so that when connecing at one end When locking device 5 moves to latched position by the first stroke, the engagement device 225 at the other end also moves Move latched position.Similarly, move to unlock by the second stroke when engagement device 5 at one end During position, the engagement device at the other end moves to unlocked position also by identical stroke.

In an alternative embodiment, providing one end can not there is axle ring 207, rather than each phase of arrestment mechanism Corresponding set of parts it are provided which at opposite end.This is because the actuator 3,203 at each respective end is regularly It is attached to wheel shaft 49, and the most as one man rotates.Thus, it is supposed that have can with associated actuators 3 in one end Couple axle ring 7, and thus cause actuator 3 to rotate with single stroke, the actuating at corresponding opposite end Device 203 will rotate, although not having the corresponding axle ring 207 of their own.

Advantageously, compared with existing mechanism, the handbarrow including the arrestment mechanism according to the present invention is prone to behaviour Make, this is because the identical downward stroke operation of pedal can be to wheel lock and unblock.This part is Couple with actuator on downward stroke due to rotary components and return to its primary importance when rotary components Time from actuator depart from ability.

It addition, arrestment mechanism as above enables same section as one man to grasp in each end of wheel shaft Make, it means that two ends will be simultaneously in locking or unlock in configuration.Therefore, according to the braking of the present invention Mechanism is more more reliable than existing arrestment mechanism.

Above example describes the most by way of example.It will be appreciated that without departing from right of such as enclosing In the case of the scope of the present invention defined in requirement, modification is possible.

Claims (30)

1. an arrestment mechanism, it is for having the handbarrow of at least one wheel, and described arrestment mechanism includes:

The engagement device that can move between the first position and the second position, wherein in described primary importance, the at least some of of described engagement device engages with the wheel of described handbarrow, and wherein in the described second position, described engagement device departs from from described wheel, so that the described wheel of described handbarrow rotates relative to described engagement device；

Actuator, described actuator docks with described engagement device and can pivot, make when described actuator rotates around described axle, described engagement device moves to the described second position from described primary importance, and when described actuator further rotates around its axle, described engagement device moves to described primary importance from the described second position；And

For moving the mobile device of described actuator relative to described engagement device, wherein said mobile device can couple with described actuator, and when described mobile device couples with described actuator, applying external force by user to described mobile device makes described actuator in rotary moving, and makes the movement between described primary importance and the described second position of the described engagement device.

Arrestment mechanism the most according to claim 1, wherein when described mobile device separates from described actuator, described mobile device does not make described actuator in rotary moving.

3., according to the arrestment mechanism described in claim 1 or claim 2, wherein said actuator and described engagement device are arranged such that described actuator moves up described engagement device around the side being rotated in the Plane of rotation away from described actuator of axle.

4., according to the arrestment mechanism described in claim 1 or claim 2, wherein said actuator and described engagement device are arranged such that at least one of linear movement being converted into described engagement device in rotary moving of described actuator.

Arrestment mechanism the most according to claim 3, wherein said actuator and described engagement device are arranged such that at least one of linear movement being converted into described engagement device in rotary moving of described actuator.

Arrestment mechanism the most according to claim 1, can pivoting at least partially of wherein said mobile device.

Arrestment mechanism the most according to claim 6, can rotating around the axle identical with the rotary shaft of described actuator at least partially of wherein said mobile device.

Arrestment mechanism the most according to claim 7, wherein when described mobile device and actuator are in released state, described mobile device can rotate around identical rotary shaft independently with described actuator.

Arrestment mechanism the most according to claim 1, wherein said mobile device includes the lever arm for receiving revolving force.

Arrestment mechanism the most according to claim 9, wherein said lever arm includes foot operating pedal, wherein applies revolving force by the foot of user to described foot operating pedal.

11. arrestment mechanisms according to claim 1, wherein said mobile device can move between the first position and the second position, and wherein said mobile device is partial to described primary importance.

12. arrestment mechanisms according to claim 11, farther include to be arranged in described actuator and described mobile device at least some of between coupling arrangement, and wherein said coupling arrangement is arranged to, when described mobile device moves to the described second position from described primary importance, described mobile device is connected to described actuator.

13. arrestment mechanisms according to claim 12, a part for wherein said mobile device is arranged to dock with described actuator, wherein butted part has at least one structure, and the most shaped and described coupling arrangement of described structure engages, wherein when described mobile device moves to the described second position from described primary importance, described actuator moves with described mobile device with the joint of the described structure of described butted part via described coupling arrangement.

14. arrestment mechanisms according to claim 13, wherein said structure is so shaped that described structure does not engage described coupling arrangement when described mobile device moves to described primary importance from the described second position.

15. arrestment mechanisms according to claim 1, wherein said actuator includes the actuation surfaces limited around the rotary shaft of described actuator, described actuation surfaces is arranged to adjacent with described engagement device and contacts, and wherein said actuation surfaces limits wherein said engagement device can be positioned at the recess in the described primary importance of described engagement device.

16. arrestment mechanisms according to claim 15, wherein said actuation surfaces limits for described engagement device is supported on the platform in the described second position of described engagement device.

17. arrestment mechanisms according to claim 16, wherein said actuation surfaces is limited to the inclined cam surface between described recess and described platform, wherein said cam face is configured to, when described actuator is when rotating up to the side of described platform from described recess, described engagement device is advanced to described platform from described recess.

18. arrestment mechanisms according to claim 17, wherein form antelabium, in order to when described engagement device and described contact with platform, prevent described actuator from rotating up from described platform to the side of described recess between described cam face and described platform.

19. according to the arrestment mechanism according to any one of claim 16 to 18, wherein said actuation surfaces farther includes the second inclined cam surface, described second inclined cam surface extends to described recess from described platform, and it is shaped as when described actuator is when rotating up to the side of described recess from described platform, advances described engagement device to leave the described second position and further away from described primary importance.

20. is spiral according to the arrestment mechanism described in claim 17 or claim 18, wherein said inclined cam surface or each inclined cam surface.

21. arrestment mechanisms according to claim 19, wherein said inclined cam surface or each inclined cam surface are spiral.

22. are partial to described actuation surfaces according to the arrestment mechanism according to any one of claim 14 to 18, wherein said engagement device.

23. arrestment mechanisms according to claim 19, wherein said engagement device is partial to described actuation surfaces.

24. arrestment mechanisms according to claim 20, wherein said engagement device is partial to described actuation surfaces.

25. arrestment mechanisms according to claim 21, wherein said engagement device is partial to described actuation surfaces.

26. arrestment mechanisms according to claim 1, wherein said engagement device includes follower and latching, and wherein said latching is deflected up in the side away from described follower.

27. arrestment mechanisms according to claim 1, farther include receptor, and wherein said receptor can pivot, and wherein when described engagement device engages with described receptor, stop described receptor to be rotated about their axes.

28. arrestment mechanisms according to claim 27, wherein said receptor includes a part for wheel or can fix relative to wheel, and is in use arranged such that when described engagement device engages with described receptor to stop described wheel to be rotated about their axes.

null29. 1 kinds of handbarrows including arrestment mechanism，Described arrestment mechanism includes the engagement device that can move between the first position and the second position，Wherein said engagement device engages at least one wheel of described handbarrow to prevent described wheel from rotating，Wherein in described primary importance，At least some of of described engagement device engages with at least one wheel described of described handbarrow，And wherein in the described second position，Described engagement device departs from from described wheel，Described wheel can be rotated relative to described engagement device，Described arrestment mechanism farther includes actuator，Described actuator docks with described engagement device and can pivot，Make when described actuator rotates around described axle，Described engagement device moves to the described second position from described primary importance，And when described actuator further rotates around its axle，Described engagement device moves to described primary importance from the described second position，Described arrestment mechanism farther includes the mobile device for moving described actuator relative to described engagement device，Wherein said mobile device can couple with described actuator，And when described mobile device couples with described actuator，Applying external force by user to described mobile device makes described actuator in rotary moving，And make the movement between described primary importance and the described second position of the described engagement device.

30. 1 kinds of handbarrows including arrestment mechanism according to claim 1.