CN104276196B - Perambulator - Google Patents

Abstract

The present invention provides a kind of perambulator (10), which has the locking mechanism (88) for the locking member (130) for being used to operate limiting wheel rotation.Switching mechanism has：1st switching part (75), it is arranged on handle, can be acted with the swing of handle；2nd switching part (80), it is supported on back leg, can be acted with the swing of handle relative to back leg；Transmission mechanism (87), the action of the 2nd switching part is passed to locking member by it.1st switching part has the cam bearing surface (76) abutted against in action with the 2nd switching part, 2nd switching part has the cam contact piece (81) contacted with cam bearing surface, and the position being in contact in cam contact piece with cam bearing surface changes with the swing of handle.

Description

Perambulator

Technical field

The present invention relates to a kind of handle forwards to be swung between inclined position and the position of tilted rearward Perambulator.

Background technology

In the prior art, following a kind of perambulator known in people, i.e. in the perambulator, handle can be to vertical The 1st position (back side pushing position) of the back sweep of axis and from the side when to the inclined 2nd position (face in front of vertical axis Opposite pushing position) between swing, when in view of the operability of this perambulator, used on foreleg and back leg and be used as institute The wheel holding unit of the Caster of meaning, the wheel holding unit have：Rotor, it supports vehicle wheel rotation；Fixed body, its with Support rotary body rotates centered on not parallel axis with the pivot center of wheel, also, it is preferred that on direct of travel The rotor of wheel holding unit on the car leg of front side can be rotated relative to fixed body, and limitation is installed on direct of travel Rear side car leg on the rotor of wheel holding unit can be rotated relative to fixed body.Also, in JP2008- In perambulator disclosed in 254693A, switching mechanism is provided with, which can automatically switch according to the position of handle The state that rotor can be rotated relative to fixed body and the state that can not be rotated.

Such a switching mechanism is although highly useful, but structure is very complicated, may result in maximization, so as to lead Cause re-quantization.

The content of the invention

In view of the foregoing, it is an object of the present invention to provide a kind of perambulator with small-sized switching mechanism.

Perambulator according to the present invention has baby's vehicle main body, handle, wheel holding unit, wherein,

Baby's vehicle main body has foreleg and back leg,

The handle is connected with baby's vehicle main body and can be swung relative to baby's vehicle main body,

Wheel holding unit is arranged at least one in the foreleg and the back leg, is had：

Wheel；

Rotor, it supports the wheel to be allowed to rotatable；

Fixed body, it is installed at least one in the foreleg and the back leg, and with the rotation with the wheel Support rotary body is to be allowed to rotatable centered on the not parallel axis of axis；

Locking member, it can be moved between latched position and latch-release position, and the locking member is positioned at locking During position, limit the rotor and rotated relative to the fixed body, it is described when the locking member is located at latch-release position Physical efficiency is rotated to rotate relative to the fixed body,

Switching mechanism is provided with the perambulator, the switching mechanism is according to the handle relative to the perambulator The swing of main body, make the locking member from the latch-release position to the latched position or from the latched position to The latch-release position movement,

The switching mechanism has：

1st switching part, it is arranged on the handle and can be acted with the swing of the handle；

2nd switching part, its be supported on the back leg and can with the action of the 1st switching part and relative to The back leg action；

Transmission mechanism, the action of the 2nd switching part is passed to the locking member by it,

1st switching part has cam bearing surface, and the cam bearing surface is moved in the swing with the handle When making, abutted against with the 2nd switching part, the 2nd switching part is acted relative to the back leg,

2nd switching part has the cam contact piece that is contacted with the cam bearing surface, in the cam contact piece The position contacted with the cam bearing surface changes with the swing of the handle.

Perambulator according to the present invention can use such as lower structure：

When the handle is swung relative to baby's vehicle main body to certain orientation, in the cam contact piece with it is described By the upstream side in the mobile route of the cam bearing surface, downstream side changes for the position of cam bearing surface contact.

Perambulator according to the present invention, can use such as lower structure：

The handle can be swung relative to baby's vehicle main body between the 1st position and the 2nd position,

In the state of the handle is located at the 1st position, the cam bearing surface is configured to, its positioned at only with it is described Handle is contacted with the position of cam contact piece from the 1st position to cam bearing surface described in the 2nd position swing process In a part of facing position on；In the state of the handle is located at the 2nd position, the cam bearing surface configuration Into it is located at only is contacted with the handle from the 1st position to cam bearing surface described in the 2nd position swing process On a part of facing position in the position of cam contact piece.Perambulator according to the present invention, can use following knot Structure：

The cam contact piece has at least two cam contact protuberances prominent to the cam bearing surface, described convex Wheel contact protuberance configuration is mutual on the mobile route formed along the cam bearing surface with the swing of the handle On separated position.

Perambulator according to the present invention, can use such as lower structure：

The handle can be swung relative to baby's vehicle main body between the 1st position and the 2nd position,

When some position between the 1st position and the 2nd position of the handle, the cam abuts Face is contacted with the two cam contact protuberances for being moved along it path and being adjacent at the same time.

Perambulator according to the present invention, can use such as lower structure：

The handle can be swung relative to baby's vehicle main body between the 1st position and the 2nd position,

The cam contact piece cam contact protuberance prominent to the cam bearing surface from two is formed, i.e. is had 1st cam contact protuberance and the 2nd cam contact protuberance, the 1st cam contact protruding parts are in the handle by described 1st position to the 2nd position move when the cam bearing surface mobile route on upstream side, it is and described 2nd convex Wheel contact protuberance is then located at the downstream side on the mobile route of the cam bearing surface,

In the state of the handle is located at the 1st position, the cam bearing surface is only dashed forward with the 1st cam contact The 1st cam contact protuberance gone out in portion and the 2nd cam contact protuberance is facing and contacts therewith,

In the state of the handle is located at the 2nd position, the cam bearing surface is only dashed forward with the 1st cam contact The 2nd cam contact protuberance gone out in portion and the 2nd cam contact protuberance is facing and contacts therewith.

Perambulator according to the present invention, can use such as lower structure：

When 1 centre position of the handle between the 1st position and the 2nd position, the cam supports Junction and the 1st cam contact protuberance and the 2nd cam contact protuberance both of which are facing and only with the described 1st Cam contact protuberance is in contact；

When 2 centre position of the handle between the 1st position and the 2nd position, the cam supports Junction and the 1st cam contact protuberance and the 2nd cam contact protuberance both of which are facing and only with the described 2nd Cam contact protuberance is in contact.

Perambulator according to the present invention, can use such as lower structure：

It is described convex when some position between the 1st centre position and the 2nd centre position of the handle Wheel bearing surface is in contact with the 1st cam contact protuberance and the 2nd cam contact protuberance both of which.

Perambulator according to the present invention, can use such as lower structure：

When the axis of oscillation swung along the handle relative to baby's vehicle main body is observed, by the handle relative to The air line distance of each position of the axis of oscillation that baby's vehicle main body is swung to the cam bearing surface is by cam bearing surface One end it is progressively longer to the other end on cam bearing surface, wherein, one end on the cam bearing surface for the handle by 1st position to the 2nd position swing when moving direction on front side, and the other end on the cam bearing surface For the handle from the 1st position to the 2nd position swing when moving direction on rear side,

Moreover, when the handle is located at 2 position, swung by the handle relative to baby's vehicle main body The air line distance ratio of axis of oscillation to the 2nd cam contact protuberance is swung by the handle relative to baby's vehicle main body Oscillation center to the 1st cam contact protuberance air line distance it is short.

Perambulator according to the present invention, can use such as lower structure：

It is opposite by the handle when the oscillation center swung along the handle relative to baby's vehicle main body is observed In baby's vehicle main body swing oscillation center to each position of the cam bearing surface air line distance by cam bearing surface On one end it is progressively longer to the other end on cam bearing surface, wherein, one end on the cam bearing surface is the handle The front side on moving direction when being swung by the lateral opposite side in swingable scope, and it is another on the cam bearing surface The rear side on moving direction when one end is swung for the handle by the lateral opposite side in swingable scope,

Moreover, the edge of the cam bearing surface direction parallel with the axis of oscillation of the handle and the width that is formed are by institute The other end stated on the cam bearing surface of rear side of the one end on as moving direction on cam bearing surface becomes larger.

It can minimize switching mechanism using the present invention.

Brief description of the drawings

Fig. 1 is the figure for illustrating an embodiment of the invention, and represents that the back-rest in seat erects and handle The stereogram of perambulator in the state of when hand is located at 1 position.

Fig. 2 is baby shown in Fig. 1 in the state of representing when the back-rest in seat was fallen and handle is located at 2 position The stereogram of car.

Fig. 3 is the state represented when the back-rest supporting member in seat supporter erects and handle is located at 1 position Under, seat be removed after Fig. 1 shown in perambulator stereogram.

Fig. 4 is the shape represented when the back-rest supporting member in seat supporter was fallen and handle is located at 2 position Under state, seat be removed after Fig. 2 shown in perambulator stereogram.

Fig. 5 is the side view of perambulator shown in Fig. 3.

Fig. 6 is the side view of perambulator shown in Fig. 4.

Fig. 7 be represent seat be removed after Fig. 1 shown in infant fold after in the state of side view.

Fig. 8 is the baby under the figure for the part for representing the perambulator centered on seat bearing unit, and Fig. 3 states The sectional view of car.

Fig. 9 is the figure for the part for representing the perambulator centered on seat bearing unit, and seat bearing unit Back-rest supporting member fallen after in the state of perambulator sectional view.

Figure 10 is the stereogram for representing seat bearing unit.

Figure 11 is stereogram when representing the coupling part by seeing seat bearing unit and main body frame on the inside of width.

Figure 12 is stereogram when representing the coupling part by seeing seat bearing unit and main body frame on the inside of width.

Figure 13 is to represent that the coupling part progress cutting in the width direction to seat bearing unit and main body frame forms Sectional view.

Figure 14 is partial perspective view when representing the coupling part by seeing handle and baby's vehicle main body on the outside of width.

Figure 15 is side view when representing the coupling part of the main body by seeing handle and perambulator on the outside of width.

Figure 16 is stereogram when representing the coupling part of the main body by seeing handle and perambulator on the outside of width.

Figure 17 is side when schematically showing the coupling part of the main body by seeing handle and perambulator on the outside of width View, and the figure of the action for illustrating switching mechanism.

Figure 18 is side when schematically showing the coupling part of the main body by seeing handle and perambulator on the outside of width View, and the figure of the action for illustrating switching mechanism.

Figure 19 is side when schematically showing the coupling part of the main body by seeing handle and perambulator on the outside of width View, and the figure of the action for illustrating switching mechanism.

Figure 20 is side when schematically showing the coupling part of the main body by seeing handle and perambulator on the outside of width View, and the figure of the action for illustrating switching mechanism.

Figure 21 is side when schematically showing the coupling part of the main body by seeing handle and perambulator on the outside of width View, and the figure of the action for illustrating switching mechanism.

Figure 22 is the stereogram for representing the wheel holding unit in the state of removing after single wheel.

Figure 23 is the side view for representing the wheel holding unit in the state of removing after wheel.

Figure 24 is the stereogram for the 2nd elastic structure for representing wheel holding unit.

Figure 25 is the sectional view formed along the XXIII-XXIII of Figure 23 to the progress cutting of wheel holding unit, and is used for Illustrate the figure of the action of locking member.

Figure 26 is the sectional view identical with Figure 25, and the figure of the action for illustrating locking member.

Figure 27 is the stereogram for representing locking member.

Figure 28 be represent expansion seat when in the state of top view.

Figure 29 is the side view for representing the seat in the state of the supporting of shown in Fig. 8 seat bearing unit.

Figure 30 is the side view for representing the seat in the state of the supporting of shown in Fig. 9 seat bearing unit.

Figure 31 is seen the stereogram when bottom plate and back plate for forming basket by front upper place.

Figure 32 is seen the stereogram when bottom plate and back plate for forming basket by the back lower place.

Embodiment

In the following, it is described with reference to the embodiment of the present invention.Fig. 1~Figure 32 is the baby for illustrating the present invention The figure of one embodiment of car.

<The general configuration of perambulator>

Fig. 1~Figure 32 represents the overall structure of the perambulator 10 of present embodiment.Diagram perambulator 10 has：Baby car owner Body 11, its seat bearing unit 40 supported with main body frame 15 and by the main body frame 15；Seat 150, it installs present On chair bearing unit 40；Handle 70, it is connected with baby's vehicle main body 11；Wheel holding unit 100, it is installed on main body frame On 15 foreleg 20 and back leg 21；Basket 90, it is supported by baby's vehicle main body 11.As seat 150, can use has bullet Property known component, preferably the seat 150 can on seat bearing unit 40 and can be detached from come.Baby children Youngster can be sitting in or be lain on the seat 150.In addition, although not shown, it is also possible to set hood on perambulator 10.

As shown in fig. 7, the perambulator 10 in present embodiment can be close to each other with foreleg 20, back leg 21 and handle 70 Mode folds.Most of structure member of baby's vehicle main body 11 is hinged, and is folded so as to realizing.In addition, seat 150 passes through profit Formed with cloth material with flexibility etc., it can deform with the jackknife action of perambulator 10.

In addition, in the present embodiment, handle 70 is connected with baby's vehicle main body 11, and can be relative to baby's vehicle main body 11 swing.Handle 70 can be in the 1st position (back side pushing position, rear position) shown in Fig. 1, Fig. 3 and Fig. 5 and Fig. 2, Fig. 4 And swung between the 2nd position (face-to-face pushing position, anterior position) shown in Fig. 6.Therefore, operator (guardian) can be from The rear side of infant holds handle 70, controls perambulator 10, the perambulator 10 is advanced, and at this time, infant is towards traveling side To front, in addition, operator can hold handle 70 from face of the position of the foreleg side of infant, control perambulator, make this Perambulator 10 is advanced, and at this time, the back leg side of perambulator 10 is the front of direct of travel.

Installed in foreleg 20 and back leg 21 it is at least one on wheel holding unit 100 be used as so-called Caster structure Into the wheel holding unit 100 has：Rotor 110, it keeps it in a manner of wheel 101 is rotatable；Fixed body 105, its support rotary body centered on the axis not parallel with the pivot center Ar of wheel 101 (be known as " bound feet wheel axis Ac ") 110 rotate.Also, switching construction 88 is provided with perambulator 10, the switching mechanism 88 can according to the position of handle 70 from The dynamic rotor 110 for enabling wheel holding unit 100 is in the state rotated relative to fixed body 105 and the shape that can not be rotated Switch between state.Especially in the present embodiment, the car formed as Caster is both provided with foreleg 20 and back leg 21 Take turns holding unit 100, switching mechanism 88 according to the position of handle 70, the front side that can make to be mounted on direct of travel The rotor 110 of wheel holding unit 100 on leg is rotated relative to fixed body 105 centered on bound feet wheel axis Ac, moreover, The rotor 110 that the wheel holding unit 100 on the leg for making to be mounted on the rear side on direct of travel can be limited is opposite Rotated in fixed body 105 centered on bound feet wheel axis Ac.

In addition, in the present specification, "front", "rear" for perambulator 10 and its structure member, " on " and " under " do not having In the case of having special instructions, represent by ride in be in unfolded state perambulator 10 on infant on the basis of " preceding ", " rear ", " on " and " under ".Therefore, the side of the lower left side on the paper of " anteroposterior direction " equivalent to 1~Fig. 4 of connection figure and upper right side To, and equivalent to the direction of the left and right on the paper of connection figure 5 and Fig. 6.Also, as long as no special instructions, " preceding " is with regard to table Show the side of infant institute direction by bus, the lower left side on the paper of Fig. 1~Fig. 4 and the left side table on the paper of Fig. 5 and Fig. 6 Show " front side ".In addition, " above-below direction " refer to it is vertical with anteroposterior direction and vertical with the surface (ground) of placing baby car 10 Direction.Therefore, when the surface of placing baby car 10 is horizontal plane, " above-below direction " refers to vertical direction.In addition, " transverse direction side To " and " width " refer to the direction vertical with any one in " anteroposterior direction " and " above-below direction ".In addition, " right side " and " left side " represents on " right side " and " left side " on horizontal direction or width on the basis of the infant for taking perambulator 10 respectively.

As shown in the figure, perambulator 10 on the whole centered on the median plane on the width extended along the longitudinal direction substantially In symmetrical structure.In the following, referring to the drawings, illustrate each structure member of the perambulator 10 in present embodiment.

<Baby's vehicle main body and handle>

Baby's vehicle main body 11 has：Main body frame 15, it is with foreleg 20 and back leg 21；Vehicle seat bearing unit 40, it is logical Shaft member 13 is crossed with main body frame 15 to be connected.Seat bearing unit 40 is installed on by shaft member 13 on main body frame 15 and energy It is enough to be rotated relative to the main body frame 15.So as to the jackknife action and expansion that seat bearing unit 40 can be with perambulator 10 Action is acted relative to main body frame 15.Seat bearing unit 40 relative to the direction residing for the center of rotation of main body frame 15 with The axis direction da of shaft member 13 is consistent, parallel with the width of perambulator 10 especially in illustrative example.In addition, In present embodiment, handle 70 is installed in baby's vehicle main body 10 and can be swung by shaft member 13.Handle 70 is relative to baby Direction residing for the center of rotation of youngster's vehicle main body 11 is consistent with the axis direction da of shaft member 13, so that the width with perambulator 10 Direction is parallel.First, illustrate the seat bearing unit 40 of baby's vehicle main body 11, then, illustrate the body frame of baby's vehicle main body 11 Frame 15, then, illustrates handle 70.

<Seat bearing unit 40>

As shown in Fig. 2, Fig. 3, Fig. 8~Figure 10, seat bearing unit 40 includes：Seat portion supporting member 50, it is from below The buttocks of infant with taking perambulator 10 is facing；Back-rest supporting member 60, it is from rear with taking perambulator 10 The back of infant is facing.Back-rest supporting member 60 can swing and (can topple over) relative to seat portion supporting member 50. Action is leaned to so as to fulfill perambulator 10.In addition, the angle that leans to of back-rest supporting member 60 leans to adjusting band by adjusting Control (not shown) obtains, this, which is leaned to, adjusts the back side that band passes through back-rest supporting member 60, on main body frame 15.

There is seat portion supporting member 50 a pair of of rear in the direction of the width mutually from configuration to connect on part in its rear Portion 54.In addition, there is back-rest supporting member 60 a pair of of lower section in the direction of the width mutually from configuration to connect on part thereunder Socket part 62.The rear connecting portion 54 in left side fastens with the lower section connecting portion 62 in left side, the rear connecting portion 54 on right side and right side Lower section connecting portion 62 fasten.Back-rest supporting member 60 by the engaging of rear connecting portion 54 and lower section connecting portion 62 and with Seat portion supporting member 50 is connected and can be swung relative to the seat portion supporting member 50.In the example in the figures, it is a pair of Rear connecting portion 54 is on the inside of the width of a pair of of lower section connecting portion 62, and still, the invention is not limited in the example, example Such as, a pair of of lower section connecting portion 62 can be located on the inside of the width of a pair of of rear connecting portion 54.

As shown in figure 13, it is respectively formed with rear connecting portion 54 and lower section connecting portion 62 and leads to for what shaft member 13 passed through Hole 50a, through hole 60a.As shown in Figure 10~Figure 12, shaft member 13 is in the direction of the width mutually from being configured with a pair.Each shaft member 13 Through through hole 50a, through hole the 60a extension of the rear connecting portion 54 and lower section connecting portion 62 of corresponding side.

It is arranged in addition, being provided with raised (the 1st is raised) 62a, protrusion 62a on lower section connecting portion 62 with shaft member 13 Axis direction da centered on circumference on and it is prominent to axis direction da.Raised 62a has crowning (outer surface), the protrusion Face is in the whole circumference centered on axis direction da or part-circular periphery.In addition, formed with connecing on rear connecting portion 54 Receive the raised receiving division 54a of the crowning 62a1 of protrusion 62a.Raised receiving division 54a has raised receiving plane 54a1, which connects Receipts portion 54a1 is in the whole circumference centered on the axis direction da of shaft member 13 or part-circular periphery.When rear connecting portion 54 When being relatively rotated with lower section connecting portion 62, the raised receiving plane 54a1 phases of the crowning 62a1 of raised 62a and raised receiving division 54a To sliding.In this way, protrusion 62a and protrusion receiving division 54a fasten, make back-rest supporting member 60 relative to seat portion supporting part Part 50 can be swung.Especially since protrusion 62a extends on the circumference centered on the axis direction da by shaft member 13, because And back-rest supporting member 60 is relative to the direction residing for the axis of oscillation of seat portion supporting member 50 and the axis of shaft member 13 Direction da is consistent.In addition, pass through each protrusion 62a on make to be arranged in rear connecting portion 54 and lower section connecting portion 62 one Into be arranged in rear connecting portion 54 and lower section connecting portion 62 another on corresponding side raised receiving division 54a It is interior, so that, such as in the state of before being passed through by shaft member 13, seat portion supporting member 50 and back-rest supporting member 60 exist It can be connected in the state of opposing oscillatory.In addition, it is different from example illustrated, it can be set on rear connecting portion 54 convex Rise, raised receiving division is set on lower section connecting portion 62.

In the example shown in Figure 13, oriented width is formed on the lower section connecting portion 62 of back-rest supporting member 60 The raised 62a that inner side protrudes.Raised 62a forms a part of the through hole 60a passed through for shaft member 13.The pleurapophysis into width The raised 62a gone out forms ring-type on the circumference centered on the axis direction da by shaft member 13.In addition, in seat portion supporting part Formed with the raised receiving division 54a for receiving protrusion 62a on the rear connecting portion 54 of part 50.Raised receiving division 54a is by through hole 50a Side face is formed, and through hole 50a is formed on rear connecting portion 54, is passed through for shaft member 13.Therefore, in the example in the figures, after The through hole 50a of square connecting portion 54 receives shaft member 13 by the raised 62a of lower section connecting portion 62.Using such a mode energy The enough length for extending the through hole 60a being formed on back-rest supporting member 60 da in the axial direction.Therefore seat branch can be suppressed Bearing unit 40 is rocked relative to shaft member 13, makes swing of the seat bearing unit 40 by shaft member 13 relative to main body frame 15 It is smoothed out.

In the following, the seat portion supporting member 50 and back-rest in the present embodiment for illustrating to illustrate in further detail support Component 60.Seat portion supporting member 50 has：Seat portion supporting frame 51, its is u-shaped；Frame end pieces 53, it is separately mounted to Seat portion supporting frame 51 is formed on the end 51a of U-shaped；Seat basic courses department 55, its tensioning are arranged on seat portion supporting frame 51.Separately Outside, seat basic courses department 55 is merely represented in Figure 10.

Seat portion supporting frame 51 has：A pair of of side frame portion 52a；Frame portion 52b is connected, it connects a pair of of side frame portion 52a.It is a pair of Side frame portion 52a is in symmetrical structure, is substantially extended in the longitudinal direction.Frame portion 52b is connected to connect the front side of a pair of of side frame portion 52a The mode of end extends.Seat portion supporting frame 51 can be by bending homogenous material, such as bend the made of metal being made of aluminium The integral part (component) managed and formed.Frame end pieces 53 are as the part (portion extended in the surface vertical with width Part), such as formed to obtain by using resin.In the illustrated embodiment, frame end pieces 53 are formed into and back-rest The rear connecting portion 54 for the connecting portion that supporting member 60 is connected.

It is sheet component with the seat basic courses department 55 that tensioning state is supported on seat portion supporting frame 51, such as by cloth material Or Web materials are formed.The seat basic courses department 55 of diagram has：Main seat portion 56, its at least a portion are located at by chair when overlooking In the region that a pair of of the side frame portion 52a and connection frame portion 52b of portions supporting frame 51 are surrounded；Cylindrical portion 57 and band portion 58, itself and master Seat portion 56 is connected or in main seat portion 56.As shown in Figure 10, cylindrical portion 57 and the front-end edge in main seat portion 56 It is connected, forms the through hole extended in the direction of the width.In addition, the both ends of band portion 58 are connected with main seat portion 56, with this Seating through hole 55a is formed between main seat portion 56.The end edge in main seat portion 56 and the back-rest supporting part being described below The section below connection of part 60.The connection frame portion 52b of seat portion supporting frame 51 is passed through in cylindrical portion 57, and a pair of of side frame portion 52a Through seating through hole 55a, so that seat basic courses department 55 is installed on seat portion supporting frame 51, anteroposterior direction and width are maintained The state being tensioned in the both direction in direction.

Back-rest supporting member 60 has the main board portion 61 of flat platelike.As the company being connected with seat portion supporting member 50 A pair of of lower section connecting portion 62 of socket part is extended downwards by main board portion 61.Although in addition, eliminate detailed view here, It is the hole that ventilation can be formed in main board portion 61 or the blade for adjusting throughput etc..

As shown in Fig. 2, Fig. 3 and Fig. 8~Figure 10, seat bearing unit 40 has：Top supporting member 41, itself and back-rest Supporting member 60 is connected and can be rotated relative to back-rest supporting member 60；Side supporting member 45, its respectively with top Supporting member 41 is connected with main body frame 15.Side supporting member 45 can be relative to top supporting member 41 and main body frame 15 swing.As shown in Figure 10, in the present embodiment, top supporting member 41 passes through in the direction of the width mutually from two of configuration Lower section connecting portion 41b is connected with back-rest supporting member 60.In addition, the sidepiece connection of the both sides of supporting member 41 above Portion 41a is connected with the back upper place connecting portion 45b of the side supporting member 45 positioned at corresponding side, side connections 41a It can swing.In addition, the front lower place connecting portion 45a of side supporting member 45 is connected with main body frame 15.In present embodiment In, the front lower place connecting portion 45a of side supporting member 45 is hinged with aftermentioned 2nd linkage component 24 of main body frame 15.

But the invention is not limited in example illustrated, as an example, the front lower place of side supporting member 45 connects Socket part 45a can not be hinged with the 2nd linkage component 24, and other positions, seat portion supporting member 50 with main body frame 15, leans on The grade of back support member 60 is hinged.

As shown in Fig. 2~Fig. 8 and Fig. 9, swung with back-rest supporting member 60 relative to seat portion supporting member 50, Side supporting member 45 is swung centered on the connecting portion 45a of front lower place.So as to, no matter when seat 150 is tilted or not tilted, Side supporting member 45 is respectively positioned on the sidepiece for the infant being sitting on seat 150.It is preferred that side supporting member 45 is sent out as connecting rod The effect of waving, the swing according to back-rest supporting member 60 relative to seat portion supporting member 50, makes top supporting member 41 opposite Swung in back-rest supporting member 60.As shown in Figure 3 and Figure 5, in the perambulator 10 involved by present embodiment, in back-rest In the state of supporting member 60 was fallen, top supporting member 41 is erected relative to back-rest supporting member 60.Therefore, it is possible to by A pair of of side supporting member 45 lies in the infant on seat bearing unit 40 from sidepiece protection, in addition, by top supporting member 41 lie in the infant on seat bearing unit 40 from rear protection.In addition, as shown in Figure 4 and Figure 6, in back-rest supporting member In the state of 60 erect, top supporting member 41 is substantially extended in parallel with back-rest supporting member 60.Therefore, it is possible to by an offside Square supporting member 45 is sitting in the infant on seat bearing unit 40 from sidepiece protection, in addition, top supporting member 41 is used as head Pillow plays a role.

In addition, in the present embodiment, as shown in Figure 10, set between each frame end pieces 53 of seat portion supporting member 50 It is equipped with connection frame part 68.And it is possible to using such as lower structure：It is extended between seat basic courses department 55 and connection frame part 68 Tension part (not shown), stably keeps seat basic courses department 55 to be in tensioning state by the tension part.In addition, using connection Frame part 68 can prevent the component on the outside of width of seat bearing unit 40 from swinging to inner side.It is logical to connect frame part 68 Cross and formed to obtain such as the metal pipe formed by aluminium.

<Main body frame>

Next, explain the main body frame 15 of above-mentioned supporting seat bearing unit 40.

As shown in Fig. 3~Fig. 7 and Figure 11~Figure 14, main body frame 15 has：After the foreleg 20 of left and right two and left and right two Leg 21；1st linkage component 22, it is connected with the foreleg 20 and back leg 21 of corresponding side；2nd linkage component 24, itself and phase 1st linkage component 22 of corresponding side is connected；The foreleg supporting member 32 of left and right two, its 20 phase of foreleg with corresponding side Connection；3rd linkage component 28, it is connected with the back leg 21 of corresponding side.21 respective upper part of foreleg 20 and back leg It is connected with the 1st linkage component 22 and can be swung relative to the 1st linkage component 22.The rear portion of 1st linkage component 22 It is connected with the 2nd linkage component 24 and can be relatively rotated with the 2nd linkage component 24.1st linkage component 22 is used as handrail Play a role.The section below of 2nd linkage component 24 is connected with the 3rd linkage component 28 and can be with the 3rd linkage component 28 Relatively rotate.

In the present embodiment, the 2nd linkage component 24 and the 3rd connecting rod are made by the shaft member 13 through seat bearing unit 40 Component 28 is connected and can relatively rotate.In addition, the 2nd linkage component 24 and the 3rd linkage component can be made using shaft member 13 28 relatively rotate with seat bearing unit 40.Therefore can make the 2nd linkage component 24 of main body frame 15, the 3rd linkage component 28, The seat portion supporting member 50 and back-rest supporting member 60 of seat bearing unit 40 are with the parallel with width of shaft member 13 The axis direction da of extension is relatively rotated.

In the present embodiment, the 2nd linkage component 24 has：Part can be connected with the 1st linkage component 22 above it The 2nd link body 25 connect and the 2nd connecting-rod head component 26 in the lower end of the 2nd link body 25.Shaft member 13 The section below covered by the 2nd connecting-rod head component 26 through in the 2nd link body 25.Therefore, the 2nd link body 25 and the 2nd Through hole 25a, the 26a for passing through and extending for shaft member 13 are formed on connecting-rod head component 26 respectively.In addition, the 3rd linkage component 28 Section below is connected with back leg 21 and can be relatively rotated with back leg 21.3rd linkage component 28 has：Thereunder on part The 3rd link body 29 being connected with back leg 21 and the 3rd connecting-rod head component in the upper end of the 3rd link body 29 30.Shaft member 13 passes through the upper section covered by the 3rd connecting-rod head component 30 in the 3rd linkage component 28.Therefore, the 3rd connecting rod Through hole 29a, the 30a for passing through and extending for shaft member 13 are formed on 29 and the 3rd connecting-rod head component 30 of main body respectively.

Also, it is raised that the 2nd is provided with the main body frame 15 being connected by shaft member 13 with seat bearing unit 40 30b, the 2nd protrusion 30b are arranged on the circumference centered on the axis direction da of shaft member 13 and prominent to axis direction da. Raised 30b has crowning (outer surface) 30b1, crowning 30b1 positioned at the whole circumference centered on axis direction da or On part-circular periphery.The 2nd protrusion formed with the crowning 30b1 for receiving the 2nd protrusion 30b on seat bearing unit 40 connects Receipts portion 62b.There is raised receiving division 62b raised receiving plane 62b1, protrusion receiving plane 62b1 to be located at the axis of shaft member 13 In whole circumference or part-circular periphery centered on the da of direction.When main body frame 15 and seat bearing unit 40 relatively rotate, the 2nd The raised receiving plane 62b1 of the raised receiving division 62b of the crowning 30b1 of raised 30b and the 2nd is opposite to be slided.In this way, by making the 2nd The protrusions of raised 30b and the 2nd receiving division 62b fastens, even if making seat bearing unit 40 and main body frame 15 not pass through shaft member 13, it can also be relatively rotated centered on the axis direction da of shaft member 13.So that the load being applied in shaft member 13 point It is dispersed on the clamped position of raised 30b and raised receiving division 62b, the durability thus, it is possible to improve perambulator.In addition, by making Each protrusion 30b enters raised receiving division 62b, and during so as to assembling for example before shaft member 13 passes through, seat is supported Unit 40 and main body frame 15 carry out high accuracy positioning.In addition, it is different from illustrative example, it can be set on seat bearing unit 40 Protrusion is put, raised receiving division is set on main body frame 15.

In the example shown in Figure 13, shaft member 13 is connected by sequentially passing through the 2nd linkage component the 24, the 3rd on the outside of width Rod unit 28 and seat bearing unit 40.Also, formed on the 3rd connecting-rod head component 30 of the 3rd linkage component 28 to width side The raised 30b protruded inwardly.Centered on prominent raised 30b is in the axis direction da by shaft member 13 on the inside of to width Circumference on form ring-type.Formed with reception on the lower section connecting portion 62 of the back-rest supporting member 60 of seat bearing unit 40 The raised receiving division 62b of raised 30b.The inner surface of protrusion receiving division 62b from the recess to width outer openings is formed.

In addition, the section below of foreleg supporting member 32 is connected with foreleg 20, and the foreleg supporting member 32 can Relatively rotated with foreleg 20.In addition, part is above fixedly connected foreleg supporting member 32 with seat bearing unit 40 above it. In perambulator 10 involved by present embodiment, the seat portion supporting member 50 of foreleg supporting member 32 and seat bearing unit 40 It is fixedly connected.In more detail, each foreleg supporting member 32 and the seat portion supporting frame 51 of composition seat portion supporting member 50 The side frame portion 52a of corresponding side is fixedly connected.As shown in Figure 10, in the upper end of foreleg supporting member 32 formed with branch concave Portion 32a, the supporting recess 32a are received the seat portion supporting frame 51 of seat portion supporting member 50 by top.In seat portion supporting frame 51 configurations are in the state of the inside of supporting recess 32a, such as using pin etc. by seat portion supporting frame 51 and foreleg supporting part Part 32 is fixedly connected.Therefore, seat portion supporting member 50 is supported from below by foreleg supporting member 32.

Foreleg supporting member 32 is used to support elongated seat receiving part 33.Seat receiving part 33 can be along its length Slided relative to foreleg supporting member 32 in direction.Seat receiving part 33 relative to foreleg supporting member 32 by sliding, forward Side extends out, so as to lift the forward portion of seat 150 from below.For example, in the back-rest of seat bearing unit 40 Supporting member 60 was fallen, and when the infant is lain on seat 150, the front part of seat 150 is lifted by seat receiving part 33 Point, so as to support the leg of infant.

As shown in Figure 1, main body frame 15 has：Pedal portion 17, it is as the structure member extended in the width direction, one To extending between foreleg 20；Rear connecting component 18, its as the structure member extended in the width direction, a pair of of back leg 21 it Between extend；Protecting component 19, it extends as the structure member extended in the width direction between a pair of 1st linkage component 22.

<Handle 70>

The handle 70 of U-shaped is connected and can swing with baby's vehicle main body 11 as constructed as above.The two of the U-shaped of handle 70 End is connected with the 3rd linkage component 28 of corresponding side and can rotate (swing) relative to it.In the present embodiment, As shown in figure 13, by making handle 70 be connected with baby's vehicle main body 11 and can be opposite through the shaft member 13 of baby's vehicle main body 11 Rotate.Especially, using shaft member 13 can make handle 70, the 2nd linkage component 24 of main body frame 15, the 3rd linkage component 28, Axle portion of the seat portion supporting member 50 and back-rest supporting member 60 of seat bearing unit 40 to be extended in parallel with width Relatively rotated centered on the axis direction da of part 13.

In the present embodiment, handle 70 has：Handle body 71, its is u-shaped；Handle end component 74, it sets respectively Put at the both ends of the U-shaped of handle body 71；1st switching part 75, it is set by width close to handle end component 74. Hand main body 71 has：A pair of of handle critical piece 72a, it is separately mounted to handle end component 74 in the lower side of handle body 71 On；Handle attachment part 72b, it extends between the upside of handle critical piece 72a.Shaft member 13 is passed through in handle body 71 The section below covered by handle end component 74 and the 1st switching part being arranged in the direction of the width with handle end component 74 Part 75.Therefore, formed respectively on 74 and the 1st switching part 75 of handle end component pass through and extend for shaft member 13 through hole 71a, 74a、75a。

Also, the 3rd protrusion 26b is provided with the baby's vehicle main body 11 being connected by shaft member 13 with handle 70, the 3rd Raised 26b is arranged on the circumference centered on the axis direction da of shaft member 13 and prominent to axis direction da.3rd is raised 26b has crowning (outer surface), and the crowning is in the whole circumference centered on axis direction da or part-circular periphery. The 3rd raised receiving division 75b formed with the crowning 26b1 for receiving the 3rd protrusion 26b on handle 70.3rd raised receiving division 75b tools There is raised receiving plane, the protrusion receiving plane is in the whole circumference centered on axis direction da or part-circular periphery.Work as handle 70 relative to baby's vehicle main body 11 when swinging, the raised reception of the raised receiving division 75b of the crowning 26b1 of the 3rd protrusion 26b and the 3rd Face 76b1 is opposite to be slided.In this way, by making the 3rd protrusion 26b and the 3rd protrusion receiving division 75b fasten, even if making handle 70 obstructed Shaft member 13 is crossed, can also be swung centered on the axis direction da of shaft member 13 relative to baby's vehicle main body 11.So that apply The load in shaft member 13 is added in the snap portions of raised 26b and raised receiving division 75b, thus, it is possible to improve baby The durability of car.In addition, by making each protrusion 26b enter raised receiving division 75b, so as to for example pass through it in shaft member 13 During preceding assembling, high accuracy positioning is carried out to handle 70 and baby's vehicle main body 11.In addition, it is different from illustrative example, can be in handle Raised, the setting raised receiving division in baby's vehicle main body 11 is set on hand 70.

In the example shown in Figure 13~Figure 15, shaft member 13 on the outside of width by sequentially passing through handle 70, the 2nd connecting rod Component 24, the 3rd linkage component 28 and seat bearing unit 40.Also, on the 2nd connecting-rod head component 26 of the 2nd linkage component 24 Form oriented width raised 26b protruding outside.The raised 26b protruding outside to width has crowning 26b1, Crowning 26b1 is on the part-circular periphery centered on the axis direction da of shaft member 13.In addition, the in handle 70 the 1st cuts Change the raised receiving division 75b formed with the crowning 26b1 for receiving protrusion 26b on component 75.Protrusion receiving division 75b has convex Receiving plane 76b1 is played, which is formed from the recess of side opening into width or the inner surface of opening.Figure The raised receiving plane 76b1 of the raised receiving division 75b shown is positioned at the part-circular periphery centered on the axis direction da of shaft member 13 On.Length is more than crowning 26b1 length in the circumferential direction to raised receiving plane 76b1 in the circumferential direction.Therefore, when handle 70 When being swung relative to baby's vehicle main body 11, raised 26b can be moved in raised receiving division 75b.

In addition, as shown in Figure 14 and Figure 15, raised 26b has crowning 26b1, in addition also have a pair of end face 26b2, 26b3, wherein, crowning 26b1 is on the part-circular periphery centered on the axis direction da of shaft member 13, a pair of of end face 26b2,26b3 are located at the both sides of crowning 26b1 and not parallel with crowning 26b1 along the circumference.In the example in the figures, it is convex Rise 26b each end face 26b2,26b3 by with the radiation direction (radial direction) centered on the axis direction da of shaft member 13 It is parallel and formed.Equally, raised receiving division 75b has raised receiving plane 76b1, in addition, also there is a pair of of end face 76b2,76b3, Wherein, raised receiving plane 76b1 is located on the part-circular periphery centered on the axis direction da of shaft member 13, a pair of of end face 76b2, 76b3 is located at the both sides of raised receiving plane 76b1 and not parallel with protrusion receiving plane 76b1 along the circumference.In example illustrated In, each end face 76b2,76b3 of raised receiving division 75b by with the radiation direction centered on the axis direction da of shaft member 13 It is parallel and formed.When handle 70 is located at the 1st position (rear position), an end face 26b2 of raised 26b configuration with protrusion On position facing an end face 76b2 of receiving division 75b, handle 70 of the limitation positioned at the 1st position is further rearward put It is dynamic.In addition, when handle 70 is located at the 2nd position (anterior position), another end 26b3 configurations of raised 26b connect with protrusion On position facing another end face 76b3 of receipts portion 75b, handle 70 further along side pendulum of the limitation positioned at the 2nd position It is dynamic.

Handle 70, which has, swings limiting part 73, which can be along the main portion of handle of handle body 71 The length direction of part 72a is slided relative to handle 70.Swinging limiting part 73 can be with the handle that is arranged in baby's vehicle main body 11 Hand fixed pin 37 fastens (with reference to Fig. 5 and Fig. 6).By handle fixed pin 37 and swing the engaging of limiting part 73 can will be Hand 70 is locked in the 2nd position (face-to-face pushing position) or the 1st position (back side pushing position).

<The molar behavior of perambulator and effect>

Next, molar behavior and effect effect of the explanation as the perambulator 10 caused by baby's vehicle main body 11 and handle 70 Fruit.First, perambulator 10 as constructed as above can be from the folded state folding shown in the unfolded state to Fig. 7 shown in Fig. 1~Fig. 6 It is folded.When folding, the structure member for forming perambulator 10 is mutually rotated centered on the axis extended in the direction of the width (to turn Rotate, swing centered on axis).

Specifically, by the way that lower section after the handle 70 of the 1st position rearwardly and upwardly pull-up, will be pressed to, the 3rd connecting rod is made Component 28 relative to back leg 21 to shown in Fig. 5 rotationally clockwise.With the operation, the 1st linkage component 22 and seat branch The seat portion supporting member 50 of bearing unit 40 relative to the 2nd linkage component 24 to shown in Fig. 5 rotationally clockwise.In the operation Under effect, handle 70 and foreleg 20 it is close from phase in terms of the side of perambulator 10 and substantially Heisei configure, in addition, handle 70 is matched somebody with somebody Seated position declines.So can folding baby car 10, reduce the size with above-below direction along the longitudinal direction of perambulator 10.In addition, During to making perambulator 10 be unfolded by folded state, as long as being operated according to the order opposite with above-mentioned folding operation.Therefore, In the perambulator 10, in folding baby car 10 and expansion perambulator 10, a part for seat bearing unit 40 is (specifically For by the part of the end 51a in seat portion supporting frame 51 to the fixed position with foreleg supporting member 32) and foreleg supporting part Part 32 plays a role as a connecting rod.

In addition, the state that restricted perambulator 10 is acted from unfolded state to folded state is set to maintain on perambulator 10 Mechanism 35.State maintains mechanism 35 to have action limiting part 35c, and action limiting part 35c can be along the 2nd linkage component 24 Length direction slided relative to the 2nd linkage component 24.Act 3rd connecting-rod heads of the limiting part 35c to the 3rd linkage component 28 30 side of component is exerted a force, and the engaging recessed part 28a with being formed on the 3rd connecting-rod head component 30 fastens, and limits the 2nd linkage component 24 and 28 opposing oscillatory of the 3rd linkage component, acted so as to limit perambulator 10 from unfolded state to folded state.In addition, state Fold mechanism 35 also has：Functional unit 35b, it can fasten with action limiting part 35c；Long-distance operating device 35a, its For remote operation functional unit 35b.Functional unit 35b can be opposite along the length direction of the handle critical piece 72 of handle 70 Slided in the handle critical piece 72.In addition, long-distance operating device 35a is arranged on the handle attachment part 72b of handle 70, can Remote operation functional unit 35b relative to handle critical piece 72a slip.Using long-distance operating device 35a, pass through operation portion Part 35b carrys out the fastening state of operational motion limiting part 35c, releasing action limiting part 35c and the 3rd connecting-rod head component 30.That is, By operating long-distance operating device 35a folding operation can be carried out to the perambulator 10 in unfolded state.

In the perambulator 10 of embodiment as described above, it is provided with back-rest supporting member 60 with axle portion The raised 62a extended on circumference centered on the axis direction da of part 13, in addition, formed with connecing on seat portion supporting member 50 Receive the raised receiving division 54a of protrusion 62a, by the engaging of raised 62a and raised receiving division 54a, back-rest supporting member 60 and Seat portion supporting member 50 is connected, moreover, back-rest supporting member 60 can be with seat bearing unit 40 relative to body frame Swung centered on the center of rotation of frame 15 relative to seat portion supporting member 50.That is, raised 62a and raised receiving division 54a are utilized Engaging positioned, can easily and accurately make seat bearing unit 40 back-rest supporting member 60 and seat portion supporting Component 50 connects in defined relative position.Further, since the engaging by raised 62a and raised receiving division 54a can make Back-rest supporting member 60 is kept being connected with prespecified position relationship and being capable of opposite pendulum with seat portion supporting member 50 It is dynamic, it is thus possible to easily seat bearing unit 40 is installed on main body frame 15 using shaft member 13.It additionally is able to make to lean on Back support member 60 keeps stablizing relative to the swing of shaft member 13.Therefore, it is possible to more stably carry out leaning to action and Jackknife action.In addition, since the load being applied in shaft member 13 is dispersed in the engaging of raised 62a and raised receiving division 54a On part, it is thus possible to improve the durability of perambulator 10.Especially, when shaft member 13 passes through more components, like this Action effect it is more obvious.Furthermore it is possible to protrusion is set on seat portion supporting member 50, on back-rest supporting member 60 Raised receiving division is set, even if can also serve the same role effect in the case of this example.

In addition, when manufacturing perambulator 10, can it is previously fabricated go out seat bearing unit 40 some or all seats Chair bearing unit 40, then, the seat bearing unit 40 manufactured is installed on main body frame 15.With by installing successively Each structure member is compared to manufacture the method for perambulator, using this manufacture method can easily, stablize and efficiently produce baby Youngster's car 10.But the present invention does not limit the manufacture method of perambulator 10.

In addition, in the perambulator 10 of present embodiment, it is provided with main body frame 15 with the axis of shaft member 13 The 2nd protrusion 30b extended on circumference centered on the da of direction, formed with the 2nd protrusion 30b's of reception on seat bearing unit 40 2nd raised receiving division 62b.Therefore, positioned by using the engaging of raised 30b and raised receiving division 62b, can easily and Main body frame 15 and seat bearing unit 40 is accurately set to be connected in defined relative position, so as to utilize shaft member 13 Easily seat bearing unit 40 is installed on main body frame 15.Further, since seat bearing unit 40 and main body frame 15 Relative rotation stablize, it is thus possible to stablize and successfully carry out jackknife action.It is in addition, negative in shaft member 13 due to being applied to Lotus is dispersed in the snap portions of raised 30b and raised receiving division 62b, it is thus possible to improves the durability of perambulator 10.Separately Outside, protrusion can be set on seat bearing unit 40, raised receiving division is set on main body frame 15, in this example Identical action effect can be obtained.

In addition, in the perambulator 10 of present embodiment, it is provided with baby's vehicle main body 11 with the axis of shaft member 13 The 3rd extended on circumference centered on the da of line direction is raised, is connect on handle 70 formed with the 3rd protrusion for receiving the 3rd protrusion 26b Receipts portion.Therefore, positioned by using the engaging of raised 26b and raised receiving division 75b, can easily and accurately make baby Vehicle main body 11 and handle 70 connect in defined relative position, so as to easily be installed handle 70 using shaft member 13 In baby's vehicle main body 11.Further, since the relative rotation of handle 70 and baby's vehicle main body 11 is stablized, it is thus possible to stable and suitable Jackknife action is carried out sharply.In addition, since the load being applied in shaft member 13 is dispersed in raised 26b and raised receiving division In the snap portions of 75b, it is thus possible to improve the durability of perambulator 10.Furthermore it is possible to protrusion is set on handle 70, in baby Raised receiving division is set in youngster's vehicle main body 11, can also obtain identical action effect in this example.

<Wheel holding unit 100>

Next, referring especially to Figure 22~Figure 27, illustrate wheel holding unit 100.As described above, it is installed on 20 He of foreleg Wheel holding unit 100 on back leg 21 is formed as so-called Caster, which has：Rotor 110, it keeps wheel 101 to rotate；Fixed body 105, its support rotary body 110 centered on bound feet wheel axis Ac rotate.Also, Switching mechanism 88 is provided with perambulator 10, which can make wheel keep single automatically according to the position of handle 70 The rotor 110 of member 100 switches between the state that can be rotated relative to fixed body 105 and the state that can not be rotated.It is right In switching mechanism 88, behind can illustrate, wheel holding unit 100 is described in detail here.

Wheel holding unit 100 with identical structure or bilateral symmetry is installed on a pair of of foreleg 20.Separately Outside, the wheel holding unit 100 with identical structure or bilateral symmetry is installed on a pair of of back leg 21.In addition, peace Mounted in foreleg 20 and the wheel holding unit 100 on back leg 21 except the part-structure that it is installed on leg Bu Tong in addition to, other are tied Structure all same.Therefore, here, the example of wheel holding unit 100 formed as Caster is illustrated.

As shown in Figure 22 and Figure 23, wheel holding unit 100 has：Rotor 110, it keeps wheel 101 to rotate；It is fixed Body 105, its support rotary body 110 can simultaneously rotate.Fixed body 105 is fixedly connected with corresponding foreleg 20 or back leg 21.Car Direction residing for the pivot center Ar of wheel 101 is consistent with the axis direction of axle 113, extends in the horizontal direction.In this implementation In mode, fixed body 105 supports supporting shaft part 108, and rotor 110 is supported on the supporting shaft part to be hung down by fixed body 105 On 108, it can be rotated centered on the axis direction of supporting shaft part 108 relative to fixed body 105.

As shown in Figure 22 and Figure 23, rotor 110 has wheel retainer 120, rest pad 115, the 1st elastic structure 125 and the 2nd elastic structure 127, wherein, wheel retainer 120 supports wheel 101 and makes its rotation, and rest pad 115 supports car Retainer 120 is taken turns so that it is acted, the 1st elastic structure 125 and the 2nd elastic structure 127 are configured in rest pad 115 and wheel Between retainer 120.Wheel retainer 120 is used to keep axle 113, and wheel 101 is maintained at the both sides of the axle 113.In addition, Wheel is eliminated in fig 23, eliminates the wheel of side in fig. 22.In the present embodiment, wheel retainer 120 passes through Swing shaft member 111 be installed on rest pad 115 on, can the sc2 centered on swinging the axis direction of shaft member 111 relative to branch Supporting block 115 is swung.In addition, in the example shown in Figure 22 and Figure 23, rotor 110 also has brake component 129, the braking parts Part 129 is installed on wheel retainer 120 and can be swung relative to the wheel retainer 120.Brake component 129 has braking Protuberance 129a, detent protrusion 129a are prominent to the direction parallel with pivot center Ar.Brake component 129 is relative to wheel Retainer 120 is swung, and detent protrusion 129a is fastened with wheel 101, and in this condition, limiting wheel 101 is with rotation axis Rotated centered on line Ar.

1st elastic structure 125 and the 2nd elastic structure 127 are in wheel retainer 120 relative to the dynamic of rest pad 115 Act lower deform.In other words, the 1st elastic structure 125 and the 2nd elastic structure 127 are received wheel and are protected by deformation Action of the frame 120 relative to rest pad 115 is held, plays pooling feature.Here, elastic structure refers to the knot with following property Structure body, i.e. when receiving external force and when removing the external force, at least original shape of local recovery, therefore, not only rubber or resin etc. General elastic material block is included in elastic structure, and is had as spring or the sack of sealing gas in structure The object for having above-mentioned property is also contained in elastic structure.Keep single in the wheel including two elastic structures 125,127 In member 100, from the viewpoint of with good pooling feature, at least one in following condition a and condition b is preferably satisfied It is a.Formed by varying the material of the 1st elastic structure 125 and the 2nd elastic structure 127, structure, configuration, deformable amount Both, can realize following condition a and condition b.

Condition a：When wheel retainer 20 starts relative to the action of rest pad 115, first, only the 1st elastic structure 125 are pressurized and deform between wheel retainer 120 and rest pad 115, when wheel retainer 120 is relative to branch When the action of supporting block 115 continues, not only the 1st elastic structure 125 quilt between wheel retainer 120 and rest pad 115 Apply pressure and deform, and the 2nd elastic structure 127 is also applied between wheel retainer 120 and rest pad 115 Pressure and deform.

Condition b：Assuming that the 1st elastic structure 125 is only configured between wheel retainer 120 and rest pad 115, logical Cross the 1st elastic structure 125 is deformed and make wheel retainer 120 relative to rest pad 115 act as defined in amount when, institute The size of the power needed is of different sizes with power required during following situation：Assuming that between wheel retainer 120 and rest pad 115 The 2nd elastic structure 127 is only configured with, makes wheel retainer 120 opposite by making the 2nd elastic structure 127 deform Defined amount is acted in rest pad 115.

Under condition a, when 115 relative motion of wheel retainer 120 and rest pad, in the starting stage of relative motion, Only the 1st elastic structure 125 deforms, and wheel retainer 120 and rest pad 115 are resisted by the 1st elastic structure 125 Relative motion.In addition, when the relative motion of wheel retainer 120 and rest pad 115 continues, the 2nd elastic structure 127 starts Deform, the relative motion of wheel retainer 120 and rest pad 115 is resisted by the 2nd elastic structure 127.For example, in car The starting stage of the relative motion of retainer 120 and rest pad 115 is taken turns, the 2nd elastic structure 127 can be with wheel retainer 120 and rest pad 115 in it is at least one be not in contact, when the relative motion of wheel retainer 120 and rest pad 115 continue When, the 2nd elastic structure 127 the two can be contacted with wheel retainer 120 and rest pad 115.When the 2nd elastic structure 127 when overcoming the relative motion of wheel retainer 120 and rest pad 115, and the 1st elastic structure 125 can also be protected with wheel The action for holding frame 120 and rest pad 115 continues to deform, and the 2nd elastic structure 127 resists car together with the 1st elastic structure 125 The relative motion of retainer 120 and rest pad 115 is taken turns, alternatively, 125 non resistance wheel retainer 120 of the 1st elastic structure and branch The relative motion of supporting block 115.

Under condition b, when wheel retainer 120 and rest pad 115 are with defined amount relative motion, produce by the 1st bullet Property structure 125 resist the resistance of the relative motion, when wheel retainer 120 and rest pad 115 are relatively dynamic in the same amount When making, the resistance that the relative motion is resisted by the 2nd elastic structure 127 is produced, the two resistances are set as different Resistance.

Next, the structure and and elastic structure of the elastic structure 125,127 of explanation embodiment illustrated 125th, the structure of the 127 relevant rotor 110 of supporting.In the present embodiment, the 1st elastic structure 125 is by bullets such as rubber Property body 126 itself form.The elastomer 126 of diagram has the receiving division 126a for being formed as recess.Wheel retainer 120 has embedding Enter the support projection 121a in receiving division 126a.By the engaging of support projection 121a and receiving division 126a, make by elastomer 126 The 1st elastic structure 125 formed is maintained on wheel retainer 120.Elastomer 126 is generally cylindrical, by it in wheel The direction extended between retainer 120 and rest pad 115 is as its length direction.When wheel retainer 120 is relative to rest pad During 115 swing, elastomer 126 is compressed along its length.Therefore, the 1st elastic structure 125 resistance wheel retainer 120 Limitation with the resistance during opposing oscillatory of rest pad 115 from wheel retainer 120 and the opposing oscillatory of rest pad 115, Generally remain certain.

Next, the structure of the rotor 110 of the 2nd elastic structure 127 of explanation and the 2nd elastic structure 127 of supporting. As shown in Figure 22 and Figure 23, the rest pad 115 of rotor 110 has the supporting board 116 of the tabular extended in the up-down direction. In addition, in addition, the wheel retainer 120 of rotor 110 has：Retainer pedestal 121, it is hinged with rest pad 115；Prolong top Extending portion 122, it is by extension above the rear direction of retainer pedestal 121.As shown in figure 23, upper extension 122 and rest pad 115 Supporting board 116 it is facing.In addition, kept for keeping the axle 113 of wheel 101 to be maintained in wheel retainer 120 Near the coupling part of frame pedestal 121 and upper extension 122.In addition, above-mentioned brake component 129 is cut with scissors with upper extension 122 Connect.

In the present embodiment, the 2nd elastic structure 127 is formed as the sack of sealing gas.Form sack material by Rubber or resin with extensibility etc. are formed.In the example in the figures, the 2nd elastic structure 127 is formed as sealing gas 128 resin pocket 128 of sack of resin-made is transparent or translucent.Resin pocket 128 is supported on supporting by fastener (not shown) On the supporting board 116 of block 115.As shown in figure 24, resin pocket 128 is in substantially cubic, thereon formed with recess 128a, platform Rank portion 128b, fastener receiver 128c.

Recess 128a be formed at on the surface of 122 facing side of the upper extension of wheel retainer 120.Recess 128a linear extensions on the direction vertical relative to the axis of oscillation sc2 that rest pad 115 is swung with wheel retainer 120.Separately Outside, it is facing formed with convex portion 123, the convex portion 123 and recess 128a on extension 122 on the top.Convex portion 123 is protected with wheel Frame 120 is held relative to linear extension on direction vertical the axis of oscillation sc2 that rest pad 115 is swung, in 120 phase of wheel retainer When being acted for rest pad 115, which abuts against with recess 128a.

Stage portion 128b is arranged on the lower section with the surface of 116 facing side of supporting board.Stage portion 128b with pendulum Linear extension on direction parallel shaft line sc2., in addition, formed with convex portion 117 on supporting board 116, the convex portion 117 with Stage portion 128b is facing.In addition, it is used to resin pocket 128 being fixed on support plate formed with built-in in fastener receiver 128c The space of fastener (not shown) in portion 116.Formed with for receiving by screw in space in fastener receiver 128c Etc. the step on the head of the fastener of composition.

Next, effect and the effect of the wheel holding unit 100 for the present embodiment that explanation is made of said structure.

First, in the wheel holding unit 100 of present embodiment, in 115 He of rest pad that can carry out relative motion The 1st elastic structure 125 and the 2nd elastic structure 127,125 He of the 1st elastic structure are provided between wheel retainer 120 2nd elastic structure 127 deforms because of the relative motion of wheel retainer 120 and rest pad 115.It is preferred that the 1st elasticity knot 125 and the 2nd elastic structure 127 of structure body meets above-mentioned condition a, i.e. relatively dynamic when wheel retainer 120 and rest pad 115 When work starts, first, only the 1st elastic structure 125 is pressurized and sends out between wheel retainer 120 and rest pad 115 Change shape, when the relative motion of wheel retainer 120 and rest pad 115 continues, in addition to the 1st elastic structure 125, and the 2nd Elastic structure 127 is also pressurized and deforms between wheel retainer 120 and rest pad 115.Such a In perambulator 10, when the physical burden for being applied to perambulator 10 is smaller, such as the month of infant on the stroller is taken When not being placed with object in smaller and basket 90, vibration caused by traveling can be efficiently received by the 1st elastic structure 125 And impact, play good pooling feature.In addition, when the physical burden for being applied to perambulator 10 is larger, such as ride in baby The month of infant on youngster's car 10 is larger and basket 90 in when being placed with object, can be by different from the 1st elastic structure 125 the 2nd elastic structure 127 or by the 1st elastic structure 125 and the 2nd elastic structure 127 stably support loading, And vibration caused by traveling and impact are efficiently received, play good pooling feature.That is, can be from the load of perambulator 10 The limitation of heavy load size, assigns the perambulator 10 good riding comfort.

Additionally, it is preferred that the 1st elastic structure 125 and the 2nd elastic structure 127 meet above-mentioned condition b, i.e. assuming that in car The 1st elastic structure 125 is only configured between wheel retainer 120 and rest pad 115, by sending out the 1st elastic structure 125 The shape that changes and make wheel retainer 120 relative to rest pad 115 act as defined in amount when, the size of required power and following situation The power of Shi Suoxu it is of different sizes：Assuming that the 2nd elastic structure is only configured between wheel retainer 120 and rest pad 115 127, wheel retainer 120 is acted relative to rest pad 115 by making the 2nd elastic structure 127 deform identical Amount.That is, the relative motion of preferably the 1st elastic structure 125 resistance wheel retainer 120 and rest pad 115 when resistance with The resistance during relative motion of the 2nd elastic structure 127 resistance wheel retainer 120 and rest pad 115 is different.Like this Perambulator 10 in, by varying the material of the 1st elastic structure 125 and the 2nd elastic structure 127, structure, configuration, variable Shape amount is suitably designed the 1st elastic structure 125 and the 2nd elastic structure 127, so as to assign car with design freedom Take turns 100 desired pooling feature of holding unit.

In addition, the 1st elastic structure 125 and the 2nd elastic structure 127 can meet above-mentioned condition a and condition b at the same time. As an example, the resistance when the relative motion of the 1st elastic structure 125 resistance wheel retainer 120 and rest pad 115 During resistance when power is less than the relative motion of the 2nd elastic structure 127 resistance wheel retainer 120 and rest pad 115, in baby In the case of the physical burden of youngster's car 10 is less, it can be efficiently received by the 1st elastic structure 125 stably support loading Vibration caused by advancing and impact.In addition, in the case where the physical burden of perambulator 10 is larger, can be tied by the 1st elasticity Structure body 125 or by the 1st elastic structure 125 and the 2nd elastic structure 127 stably support loading, and be efficiently received row Into caused vibration and impact.So as to extremely efficient eliminate the influence of the physical burden size of perambulator 10, can assign The good riding comfort of perambulator 10.

In addition, in the above-described embodiment, the 2nd elastic structure 127 is formed as the sack 128 of sealing gas.Picture Such 2nd elastic structure 127 can optimize the 2nd elastic construction by adjusting the shape of sack 128 or the loading of gas The resistance of body 127, especially makes resistance suitably produce change with the progress of adjustment.So as to be set with higher Count the free degree and assign the desired pooling feature of wheel holding unit.

In addition, in the above-described embodiment, formed with linear extension on the sack 128 for forming the 2nd elastic structure 127 Recess 128a.Also, a supporting sack 128 in wheel retainer 120 and rest pad 115, at this time, recess 128a is opposite Extended vertically in the axis of oscillation sc2 of wheel retainer 120 and rest pad 115, in wheel retainer 120 and rest pad 115 Another is located at recess 128a in 115 relative motion of wheel retainer 120 and rest pad with convex portion 123, the convex portion 123 It is interior.Due to the sack 128 that the 2nd elastic structure 127 is sealing gas, it is thus possible to deformed, passed through in all directions Recess 128a and the engaging of convex portion 123, make in wheel retainer 120 and rest pad 115 another and the deformable 2nd elasticity Structure 127 maintains defined position relationship, and sack 128 is carried out predetermined deformation.It is desired so as to ensure Suspension effect.In addition, before the relative motion of wheel retainer 120 and rest pad 115 starts, even in wheel retainer 120 In the case of not contacting and be not directly connected with deformable 2nd elastic structure 127 with another in rest pad 115, By the engaging of recess 128a and convex portion 123, also can by another in wheel retainer 120 and rest pad 115 with it is variable The 2nd existing elastic structure 127 is maintained on defined position, stably ensures desired suspension effect.

In addition, in the above-described embodiment, by the engaging of stage portion 128b and convex portion 117, sack 128 can be limited and existed Shift on the supporting board 116 of rest pad 115, and resin pocket 128 can be suppressed and become to unexpected direction Shape.So that the 2nd elastic structure 127 being made of sack 128 can play desired suspension effect.In addition, above-mentioned In embodiment, connect on the sack 128 for forming the 2nd elastic structure 127 formed with the fastener with step (flange) portion Receipts portion 128c.By fastener receiver 128c, the direction that deformation is less likely to occur sack 128 is produced, so that sack 128 Deformation generally remain certain in 115 relative motion of wheel retainer 120 and rest pad, produce it is desired as defined in buffering Function.

In addition, in the case where the 2nd elastic structure 127 is formed as the sack 128 of sealing gas, when wheel is kept When frame 120 is acted relative to rest pad 115, one in wheel retainer 120 and rest pad 115 is on sack 128 is formed at Corner start to contact with the sack 128.For the 2nd elastic structure 127 being made of the sack 128 of sealing gas, sack 128 corner shows good patience for deformation, in addition, after starting deformation in corner, the spirit of the 2nd elastic structure 127 Wheel retainer 120 is received quickly neatly to be deformed relative to the action of rest pad 115.Therefore, by the 2nd elastic construction Body 127 can stably support the physical burden of expected perambulator 10, in addition, being tied by the 2nd elasticity of supporting physical burden Structure body 127 can be efficiently received shock and vibration, play pooling feature.

In addition, elastic structure 125,127 is not limited to the situation of the sack 128 of sealing gas, elastic structure 125th, the resistance of the relative motion of 127 pairs of wheel retainers 120 and rest pad 115 can be in elastic structure 125,127 After deformation starts, do not keep certain, but change.In such a example, by suitably setting elastic structure 125th, the resistance of the relative motion of 127 pairs of wheel retainers 120 and rest pad 115, so as to the load from perambulator 10 The limitation of heavy load size, assigns perambulator 10 good riding comfort.

In addition, in the case where elastic structure 125,127 at least exposes one, can visually make one to associate slow Function is rushed, thus makes the guardian of infant feel to feel at ease.Especially, the 2nd elasticity being made of the sack 128 of sealing gas is tied Structure body 127 can make one consumingly to associate pooling feature, especially, in the case where sack 128 is transparent or semitransparent, energy Enough make one more strongly to associate pooling feature.

In addition, in the present embodiment, wheel holding unit 100 is formed as Caster, and rotor 110 can be relative to Fixed body 105 rotates, and still, the present invention is not limited thereto.It can be relatively rotated for rotor 110 with fixed body 105 Wheel holding unit, i.e. the wheel holding unit that cannot be rotated for wheel 101, can not only be applicable in 75 He of the 1st switching part 2nd switching part 80, and the above-mentioned action effect brought by the 1st switching part 75 and the 2nd switching part 80 can be obtained.Separately Outside, in the present embodiment, illustrate wheel holding unit 100 while there is the 1st switching part 75 and the 2nd switching part 80 Example, still, the present invention is not limited thereto.Wheel holding unit 100 can only have the 2nd switching part 80, in the example In, the above-mentioned action effect only brought by the 2nd switching part 80 can be obtained.

<Switching mechanism>

Next, explanation switching mechanism 88.

<The overall structure of switching mechanism>

As described above, switching mechanism 88 makes the rotor 110 of wheel holding unit 100 exist automatically according to the position of handle 70 Switch between the state that can be rotated relative to fixed body 105 and the state that can not be rotated.Especially in the present embodiment, The wheel holding unit 100 formed as Caster is both provided with foreleg 20 and back leg 21, switching mechanism 88 is according to handle 70 position, can make be installed on direct of travel on front side leg on wheel holding unit 100 rotor 110 it is opposite Rotated in fixed body 105 centered on bound feet wheel axis Ac, moreover, the rear for making to be mounted on direct of travel can be limited The rotor 110 of wheel holding unit 100 on the leg of side is rotated relative to fixed body 105 centered on bound feet wheel axis Ac. More particularly, in the state of when handle 70 is located at the 1st position (back side pushing position) shown in Fig. 1, Fig. 3, Fig. 5, switching machine The rotor 110 for the wheel holding unit 100 that structure 88 can make to be installed on foreleg 20 is rotated relative to fixed body 105, and energy The rotor 110 for the wheel holding unit 100 that enough limitations are installed on back leg 21 is rotated relative to fixed body 105.In addition, in handle In the state of when hand 70 is located at the 2nd position (face-to-face pushing position) shown in Fig. 2, Fig. 4, Fig. 6, switching mechanism 88 can limit peace The rotor 110 of wheel holding unit 100 on foreleg 20 is rotated relative to fixed body 105, and can be made after being installed on The rotor 110 of wheel holding unit 100 on leg 21 is rotated relative to fixed body 105.

Switching mechanism 88 has：1st switching part 75, it is arranged on handle 70 and can be moved with the swing of handle 70 Make；2nd switching part 80, it is supported on back leg 21 and can be acted with the action of the 1st switching part 75；Locking member 130, it is arranged on wheel holding unit 100；Transmission mechanism 87, the action of the 2nd switching part 80 is passed to sticking department by it Part 130.

Wherein, as described above, the 1st switching part 75 forms a part for handle 70.Therefore, when handle 70 Fig. 1, Fig. 3, When being swung between the 2nd position shown in the 1st position and Fig. 2, Fig. 4, Fig. 6 shown in Fig. 5, the 1st switching part 75 is with handle 70 Acted centered on axis of oscillation, i.e. rotate or circular motion.In addition, in the present embodiment, the swinging axle of handle 70 Line da is consistent with the axis direction da for the shaft member 13 that supporting handle 70 is swung.In addition, in the present embodiment, such as Figure 11~figure Shown in 14, since the 1st switching part 75 is also passed through by shaft member 13, thus make the 1st switching part 75 with the swing of handle 70, Rotated centered on the axis of oscillation da of handle 70.2nd switching part 80 configuration back leg 21 is located at the top of the 1st switching part 75 Position on.2nd switching part 80 can slide on back leg 21.

1st switching part 75 has cam bearing surface 76, and the cam bearing surface 76 is in the 1st switching part 75 with handle 70 Wobbling action when abutted against with the 2nd switching part 80.It is used to receive cam bearing surface 76 in addition, the 2nd switching part 80 has Cam contact piece 81.In the present embodiment, also relay part described later is not passed through using force application part 85 merely with gravity 83 downwards exert a force the 2nd switching part 80 along back leg 21, wherein, which is for example built in (reference in back leg 21 Figure 19).The cam contact piece 81 and the 1st for being able to maintain that the 2nd switching part 80 by the active force from force application part 85 switches The state that the cam bearing surface 76 of component 75 abuts against.Also, in the present embodiment, as the swing of handle 70, cam support The position abutted against in junction 76 with cam contact piece 81 changes, so that the 2nd switching part 80 overcomes force application part 85 Active force slided on back leg 21.

As shown in Figure 17~Figure 19, in the present embodiment, with swing of the handle 70 from the 1st position to the 2nd position, During side view perambulator 10, axis of oscillation da is left at the position abutted in cam bearing surface 76 with cam contact piece 81.Therefore, handle is worked as Hand 70 from the 1st position to the 2nd position swing when, the 2nd switching part 80 slides upward on back leg 21.Conversely, work as handle 70 When swinging to 1 position by the 2nd position, the 2nd switching part 80 is slided in 21 upper and lower of back leg.

In addition, in order to reduce the volume of the 1st switching part 75, the cam bearing surface 76 and the 2nd of the 1st switching part 75 is cut The cam contact piece for changing component 80 is improved.Below can be to 76 and the 2nd switching part of cam bearing surface of the 1st switching part 75 The cam contact piece of part 80 is described in detail.

The locking member 130 acted with the slip of the 2nd switching part 80 is arranged on wheel holding unit 100.Such as Upper described, wheel holding unit 100 has：Rotor 100, it supports wheel 101 and rotates；Fixed body 105, it is installed on foreleg 20 and back leg 21 in it is at least one upper and support rotary body 110 rotates centered on bound feet wheel axis Ac.In addition, such as Figure 25 and Shown in Figure 26, locking member 130 can move between the latched position shown in Figure 26 and the latch-release position shown in Figure 25, Locking member 130 can limit rotor 110 when being located at latched position and be rotated relative to fixed body 105, and locking member 130 is located at During latch-release position rotor 110 can be made to be rotated relative to fixed body 105.Therefore, the switching mechanism 88 of present embodiment Swing according to handle 70 relative to baby's vehicle main body 11, can make locking member 130 from latch-release position to latched position Or moved from latched position to latch-release position.

In addition, in order to make locking member 130 stably act, and the locking member 130 is improved.After also, The structure of locking member 130 and the wheel holding unit 100 for keeping locking member 130 can be described in detail in face.

Next, explanation transmission mechanism 87.Transmission mechanism 87 is arranged on the 2nd switching part 80 and wheel holding unit 100 Between, for the sliding action of the 2nd switching part 80 to be passed to the locking member 130 of wheel holding unit 100, so that lock Determine component 130 and moved between latched position and latch-release position.In the present embodiment, relaying is provided with back leg 21 Component 83.Also, relay part 83 is connected with the 2nd switching part 80, the slip with the 2nd switching part 80 relative to back leg 21 Action is synchronous, which moves up and down in back leg 21.Transmission mechanism 87 has：Wire rod 87b, during its one end is installed on After on component 83, the other end is installed in locking member 130；Cartridge 87a, for wire rod 87b through its inside and in inside Extension.As shown in figure 19, one end maintained portion 84 of cartridge 87a is kept, as illustrated in figs. 25 and 26, cartridge 87a Other end maintained portion 107 keep, wherein, on maintaining part 84 is arranged near the relay part 83 in back leg 21, keep On portion 107 is arranged near the locking member 130 of wheel holding unit 100.So as to, when the 2nd switching part 80 relative to after When leg 21 slides, wire rod 87b is moved in cartridge 87a, and the locking member 130 being connected with wire rod 87b is with wire rod The action of 87b and move.

In addition, in the present embodiment, as described above, being mounted on playing as Caster on foreleg 20 and back leg 21 The wheel holding unit 100 of effect.Therefore, as shown in figure 5, the wheel holding unit 100 of relay part 83 and foreleg it Between be provided with a transmission mechanism 87, be provided with another between relay part 83 and the wheel holding unit 100 of back leg Transmission mechanism 87.In addition, as described above, the perambulator 10 of present embodiment is shown by the center on width and preceding greatly It is symmetrical centered on the face that rear upwardly extends.Therefore, the 1st switching part 75, the 2nd switching part of switching mechanism 88 are formed Part 80 and relay part 83, the transmission mechanism 87 of foreleg, the wheel holding unit 100 of foreleg, the transmission mechanism of back leg 87 and back leg wheel holding unit 100 also left and right set.

<The cam bearing surface of 1st switching part and the cam contact piece of the 2nd switching part>

Here, referring especially to Figure 16~Figure 21, the cam bearing surface 76 and the of the 1st switching part 75 is further described The cam contact piece 81 of 2 switching parts 80.

As described above, with the swing of handle 70, the position abutted in cam bearing surface 76 with cam contact piece 81 occurs Change, the 2nd switching part 80 for making to be pushed to 75 side of the 1st switching part by force application part 85 slide on back leg 21.Such as figure Shown in 17~Figure 19, in the present embodiment, with swing of the handle 70 from the 1st position to the 2nd position, in side view perambulator 10 When, axis of oscillation da is left at the position abutted with cam contact piece 81 in cam bearing surface 76.Therefore, when handle 70 is by the 1st Put to the 2nd position swing when, the 2nd switching part 80 slides upward on back leg 21.Conversely, when handle 70 is put by the 2nd position When moving to 1 position, the 2nd switching part 80 slides downwards on back leg 21.

In addition, in the present embodiment, the position contacted in cam contact piece 81 with cam bearing surface 76 is also with handle 70 swing and change.As shown in Figure 17~Figure 21, when handle 70 is put relative to baby's vehicle main body 11 with certain direction When dynamic, in cam contact piece 81 with the position that cam bearing surface 76 contacts by cam bearing surface 76 mobile route upstream side Downstream side changes.That is, with the position that cam bearing surface 76 contacts to identical with cam bearing surface 76 in cam contact piece 81 Certain orientation movement, cam bearing surface 76 at this time acts together with handle 70.According in such a embodiment, in handle Hand 70 is located in the state of the 1st position as shown in Figure 17, and the cam bearing surface 76 of the 1st switching part 75 is configured to, its position In only from the 1st position, the cam bearing surface 76 into the 2nd position swing process is contacted with the convex of the 2nd switching part 80 with handle 70 Take turns on a part of facing position in the position of contact chip 81, moreover, in such position the 2nd as shown in figure 21 of handle 70 In the state of putting, cam bearing surface 76 is configured to, it is located at only should into the 2nd position swing process from the 1st position with handle 70 Cam bearing surface 76 is contacted with a part of facing position in the position of the cam contact piece 81 of the 2nd switching part 80.

That is, when the position being in contact in cam contact piece 81 with cam bearing surface 76 does not change, for example, the 1st Switching part 75 can also have as the part shown in the double dot dash line of Figure 21, it is necessary to which the cam of the 1st switching part 75 is abutted Face 76 makes longer.Therefore, the 1st switching of the switching mechanism 88 for easily forming labyrinth can be reduced using present embodiment The volume and weight of component 75, so as to reduce the volume and weight of perambulator 10.Especially, in the axis of oscillation of handle 70 Da be nearby configured with the jackknife action of perambulator 10 or seat bearing unit 40 and seat 150 to lean to action etc. related Structure, spatial margin are less.Actually as shown in figure 12, stateful maintenance mechanism is set in the dead astern of the 1st switching part 75 35 functional unit 35b.In the example in the figures, since the action interferenceed with functional unit 35b can be produced, thus cannot Prolongation in Figure 21 shown in double dot dash line is enough set.That is, cam bearing surface 76 and cam contact piece in present embodiment 81 structure can not only reduce the volume and weight of perambulator 10, additionally it is possible to improve the free degree of 10 global design of perambulator.

As the specific example of such a structure, the cam contact piece 81 of the 2nd switching part 80 by with cam bearing surface 76 identical surfaces are formed, and more particularly, are made of curved surface, plane, folding face etc..In addition, shown in example as shown, the 2nd The cam contact piece 81 of switching part 80 can have to 76 side of cam bearing surface of the 1st switching part 75 it is prominent at least two A cam contact protuberance 82a, 82b.The cam contact protuberance 82a, 82b configuration are formed along the swing with handle 70 Cam bearing surface 76 mobile route on the position being separated from each other on, the cam contact that is contacted with cam bearing surface 76 protrudes Portion 82a, 82b can change according to the swing position of handle 70.Cam with cam contact protuberance 82a, 82b connects The design of contact 81 and precision only higher to the status requirement of cam contact protuberance 82a, 82b is made, and to whole cam Contact chip 81 is then without the requirement of this respect.Therefore, it is possible to easily produce cam contact piece 81.

In addition, in the example in the figures, cam contact protuberance 82a, 82b is by the single cam contact piece that extends in wire 81 form, and still, cam contact protuberance 82a, 82b can be separately positioned.

Additionally, it is preferred that when some position between the 1st position and the 2nd position of handle 70, cam bearing surface 76 is same When be in contact with two cam contact protuberances 82a, the 82b for being moved along it path and being adjacent to.As described above, in this implementation In mode, the 2nd switching part 80 is exerted a force by force application part 85 to 75 side of the 1st switching part.In addition, in cam contact piece 81 with Cam contact protuberance 82a, 82b that cam bearing surface 76 contacts is with the cam bearing surface 76 to one acted together with handle 70 Determine moving for direction and change.Therefore, by setting cam bearing surface 76 to be protruded at the same time with two adjacent cam contacts The time of portion's 82a, 82b contact, so that, when cam contact protuberance 82a, 82b for being contacted with cam bearing surface 76 change When, by force application part 85 the 1st switching part 75 and the 2nd switching part 80 can be avoided to bump against.In addition, no matter handle 70 is can When still swinging in the other direction when being swung to a direction in hunting range, i.e. no matter handle 70 is from the 1st position to the 2nd Position swing when still from the 2nd position to the 1st position swing when, will not produce because cam contact protuberance 82a, 82b with it is convex Take turns impact caused by the collision of bearing surface 76, or the end because of cam contact protuberance 82a, 82b and cam bearing surface 76 76a, 76b are contacted and are crossed impact caused by the end 76a, 76b, it can be ensured that handle 70 is successfully swung.

Especially, in the present embodiment of diagram, the cam contact piece 81 of the 2nd switching part 80 is by two cam contacts Protuberance 82a, 82b are formed, and when handle 70 is moved from the 1st position to the 2nd position, cam contact protuberance 82a is located at cam Upstream side on the mobile route of bearing surface 76, and cam contact protuberance 82b is then located at the mobile road of cam bearing surface 76 Downstream side on footpath.Also, in the state of the handle 70 shown in Figure 17 is located at the 1st position, cam bearing surface 76 is only with the 1st The 1st cam contact protuberance 82a in cam contact protuberance 82a and the 2nd cam contact protuberance 82b is facing and phase therewith Contact.In addition, in the state of the handle 70 shown in Figure 21 is located at the 2nd position, cam bearing surface 76 is only dashed forward with the 1st cam contact The 2nd cam contact protuberance 82b gone out in portion 82a and the 2nd cam contact protuberance 82b is facing and contacts therewith.According to Such a present embodiment, since the contact position of cam contact piece 81 and cam bearing surface 76 is with cam bearing surface 76 Move and change, it is thus possible to shorten the length of cam bearing surface 76.That is, it can reduce and be easily formed cutting for labyrinth The volume and weight of 1st switching part 75 of converting mechanism 88, so as to reduce the volume and weight of perambulator 10.Also, as above institute State, the structure of cam bearing surface 76 and cam contact piece 81 in present embodiment can improve the overall design of perambulator 10 certainly By spending.

The 1st position being located at shown in Figure 17 when handle 17 in addition, according to the present embodiment and the 2nd position shown in Figure 21 Between when, i.e. during positioned at 1 centre position shown in Figure 18, cam bearing surface 76 and the 1st cam contact protuberance 82a and convex The two are facing and be only in contact with the 1st cam contact protuberance 82a by wheel contact protuberance 82b.In addition, when handle 17 is located at When between the 2nd position shown in the 1st centre position and Figure 21 shown in Figure 18, i.e. positioned at the 2nd centre position shown in Figure 20 When, the two are facing and only with the 2nd by cam bearing surface 76 and the 1st cam contact protuberance 82a and cam contact protuberance 82b Cam contact protuberance 82b is in contact.According to such a present embodiment, can set cam bearing surface 76 at the same time with it is adjacent Time for being in contact of two cam contact protuberances 82a, 82b.According to such a present embodiment, as described above, when with When cam contact protuberance 82a, 82b that cam bearing surface 76 is in contact change, it will not produce because of cam contact protuberance 82a, 82b and cam bearing surface 76 impact caused by bumping against, or because of cam contact protuberance 82a, 82b and cam bearing surface 76 end 76a, 76b is contacted and is crossed impact caused by the end 76a, 76b, it can be ensured that handle 70 is successfully swung.

In addition, in order to play the effect of cam bearing surface 76 and cam contact piece 81 as described above, in present embodiment In, when the axis of oscillation da swung along handle 70 relative to baby's vehicle main body 11 is observed, by handle 70 relative to baby car owner Body 11 swing axis of oscillation da to each position on cam bearing surface 76 air line distance La by one end on cam bearing surface 76 76a is progressively longer to the other end 76b on cam bearing surface 76, at this time, one end 76a on cam bearing surface 76 for handle 70 by 1st position to the 2nd position swing when moving direction on front side, and other end 76b is handle 70 from the 1st position to the 2nd The rear side on moving direction when position is swung, moreover, when handle 70 is swung to the 2nd position shown in Figure 21, by handle 70 relative to baby's vehicle main body 11 swing axis of oscillation da to the 2nd cam contact protuberance 82b air line distance Lb be less than by Handle 70 is relative to the axis of oscillation da that baby's vehicle main body 11 is swung to the 1st cam contact protuberance 82a.

In addition, in the present embodiment, when the axis of oscillation da swung along handle 70 relative to baby's vehicle main body 11 is observed When, the air line distance by handle 70 relative to each position on the axis of oscillation da that baby's vehicle main body 11 is swung to cam bearing surface 76 La is progressively longer from one end 76a on cam bearing surface 76 to the other end 76b on cam bearing surface 76, and at this time, cam abuts One end 76a on face 76 is the front on moving direction when handle 70 is swung by the lateral opposite side in swingable scope Side, and the rear side on moving directions of other end 76b when to be handle 70 swung by the lateral opposite side in swingable scope, Moreover, as shown in figure 16, the edge of cam bearing surface 76 direction parallel with the axis of oscillation da of handle 70 and the width w that is formed by Other end 76b on the cam bearing surface 76 of rear sides of one end 76a on as moving direction on cam bearing surface 76 by Gradual change is big.According to such a present embodiment, when side is seen by the axis of oscillation da of handle 70 on cam bearing surface 76 Some position air line distance La it is elongated when, the width w of cam bearing surface 76 becomes larger in the position.In the swing by handle 70 In the case that the air line distance La of some position on axis da to cam bearing surface 76 is elongated, the position of cam bearing surface 76 When being abutted against with cam contact piece 81, the effect that applies from force application part 85 to 76 side of cam bearing surface to cam contact piece 81 Power becomes much larger.Also, since on position elongated the air line distance La in the axis of oscillation da extractions by handle 70, cam supports The width w of junction 76 becomes larger, it is thus possible to is received by broader position in cam bearing surface 76 from force application part 85 more Big active force.That is, in the case of can be more than without size needed for the size of cam bearing surface 76 is increased to, the be reduced The volume and weight of 1 switching part 75 and perambulator 10.In addition, can make the 1st switching part 75 and the 2nd switching part 85 with The swing of handle 70 and successfully relative motion.

<Locking member and wheel holding unit>

Next, referring especially to Figure 25~Figure 27 illustrate in shaft member 130 and wheel holding unit 100 with locking member 130 relevant parts.

As described above, locking member 130 can be in the latched position shown in Figure 26 and the latch-release position shown in Figure 25 Between move, when locking member 130 is in the locked position, limitation rotor 110 rotated relative to fixed body 105, work as locking When component 130 is in latch-release position, rotor 110 can be made to be rotated relative to fixed body 105.Such as Figure 25 and Figure 26 institutes Show, extend in one direction formed with receptacle portion 106, the receptacle portion 106 on fixed body 105, in addition, to one A side opening facing with rotor 110 on direction.In the present embodiment, receptacle portion 106 extends in the up-down direction, and Lower opening on vertically.In addition, formed with engaging recessed part 114, the engaging on the rest pad 115 of rotor 110 Recess 114 is facing with the receptacle portion 106 of fixed body in one direction.

Locking member 130 is configured in receptacle portion 106 in a manner of its length direction is consistent with a direction, and can be Slided in the receptacle portion 106.Locking member 130 is figure to the position that the opposite side on a direction moves in receptacle portion 106 Latch-release position shown in 25, when locking member 130 is located at latch-release position, whole locking member 130 is positioned at fixation In the receptacle portion 106 of body 105.Therefore, when locking member 130 is located at latch-release position, which, which does not limit, turns Kinetoplast 110 relative to fixed body 105 rotation.In addition, locking member 130 is interior to the side on a direction in receptacle portion 106 Mobile position is the latched position shown in Figure 26, and when locking member 130 is located at latched position, the end of its side is filled to receipts Extend out outside portion 106.At this time, the end of the side of locking member 130 is extended into the engaging recessed part 114 of rotor 110. Therefore, when locking member 130 is located at latched position, which limits rotor 110 relative to fixed body 105 Rotate.

As illustrated in figs. 25 and 26, in the receptacle portion 106 of fixed body 105, in the position of the side as locking member 130 Put and be configured with compression spring 103.The compression spring 103 is pressed between a side end face of receptacle portion 106 and locking member 130 Contracting, so as to be exerted a force by another lateralization on a direction to locking member 130.As described above, locking member 130 and transmission The wire rod 87b of mechanism 87 is connected.Also, wire rod 87b is moved with the swing of handle 70, and locking member 130 overcomes compression The active force of spring 103 and be pulled up so that the locking member 130 from latched position to latch-release position move.In addition, Wire rod 87b is moved with the swing of handle 70, by compressing the active force urge lock component 130 of spring 103, so that should Locking member 130 is moved from latch-release position to latched position.

Locking member 130 in present embodiment has the end of the side on a direction for receiving compression spring 103 Spring-reception face 131a, in addition, locking member 130 has a spring side extension 135, the spring side extension 135 relative to Spring-reception face 131a extends out to the opposite side on a direction and positioned at the side of compression spring 103.As shown in figure 25, When locking member 130 in the receptacle portion 106 to another Slideslip on a direction, during in latch-release position, spring side Compression bullet of the length of extension 135 somewhat than being compressed between spring-reception face 131a and a side end face of receptacle portion 106 The length of spring 103 is short.By using the region for being configured with compression spring 103, on a direction without increasing receptacle portion 106 Length, just can increase the entire length of such a locking member 130.That is, the volume without increasing wheel holding unit 100 And weight, it just can increase the length of locking member 130.Also, by increasing the length of locking member 130, even in locking The gap that locking member 130 is reliably slided is provided for ensuring that between component 130 and receptacle portion 106, can also be effectively inhibited Locking member 130 shakes in receptacle portion 106, locking member 130 is successfully carried out sliding action.So as to more may be used The state and rotor 110 that can be rotated relative to fixed body 105 by ground switching rotor 110 cannot relative to fixed body 105 The state enough rotated.

In addition, in the present embodiment, as shown in figure 27, spring side extension 135 has a pair of sidewalls portion 136 and connection The connection wall portion 137 in a pair of sidewalls portion 136.Prolonged by spring side the part for compressing the side at least one direction of spring 103 Extending portion 135 is surrounded from three directions.Therefore, the slip with locking member 130 in receptacle portion 106, by spring side extension 135 guiding compression springs 103 are compressed and expanded.So as to further make locking member 130 stably be slided in receptacle portion 106 It is dynamic.For example, for example, when locking member 130 is moved from latched position to latch-release position, compression spring 103 is compressed Power, still, at this time, can effectively prevent compression spring 103 from being bent under the action of the compression stress, to vertical with a direction Direction protrude.So as to further make locking member 130 stably be slided in receptacle portion 106.

In addition, in the present embodiment, as shown in Figure 25~Figure 27, locking member 130 has：Base portion 131, forms thereon There is spring-reception face 131a, and be connected with spring side extension 135；Wheel side extension 141, it is connected with base portion 131, Extend out relative to the base portion 131 to the side on a direction.Also, the end installation of the wire rod 87b of transmission mechanism 87 On base portion 131.In addition, wheel side extension 141 has a pair of sidewalls portion 142, the connection wall portion in connection a pair of sidewalls portion 142 143.Entire length by ensuring such a locking member 130 can make the locking member 130 smooth in receptacle portion 106 Ground slides, in addition, can reduce the weight of the locking member 130.

In addition, according to the present embodiment, as shown in Figure 25~Figure 27, wheel side extension 141 in one direction one The end of side has tapering top tapering 141a.The end of its side can be made by solid using such a locking member 130 The receptacle portion 106 for determining body 105 extends out, and smoothly enters in the engaging recessed part 114 of rotor 110.That is, sticking department can be made Part 130 is successfully slided from latch-release position to latched position.

In addition, according to the present embodiment, as shown in Figure 25~Figure 27, on the wheel side extension 141 of locking member 130 Top tapering 141a is configured with, in addition, the end of the side of engaging recessed part 114 in one direction has tapering base cone portion 114a.Using such a wheel holding unit 100, can not only make locking member 130 successfully from latch-release position to Latched position is slided, and can reduce the locking member 130 and engaging recessed part 114 when locking member 130 is located at latched position Between gap.Therefore, it is possible to successfully be rotated from rotor 110 relative to the state that fixed body 105 can rotate to limitation The state that body 110 can be rotated relative to fixed body 105 switches, and then, can effectively prevent rotor 110 relative to fixation Body 105 rocks.So as to make perambulator 10 stably advance.

In addition, according to the present embodiment, as shown in Figure 25~Figure 27, compression spring 103 is spiral compression spring, moreover, The formation that one end is installed on locking member 130 has the wire rod 87b on the base portion 131 of spring-reception face 131a to pass through spiral pressure Contracting spring 103, and the extension in the spiral compression spring 103.During using such a wheel holding unit 100, with locking Slip of the component 130 in receptacle portion 106, by the pressure of wire rod 87b and 135 lead screw of spring side extension compression spring 103 Contracting and expansion.Therefore locking member 130 can be further made stably to be slided in receptacle portion.

In addition, in the present embodiment, locking member 130 is illustrated by transmission mechanism as the action of handle 70 is and certainly The example of dynamic action, still, the present invention is not limited thereto, locking member 130 and is protected with the 130 relevant wheel of locking member The structure for holding unit 100 can be adapted for the wheel holding unit of manual activity, in such a example, can also obtain by Above-mentioned locking member 130 and with the structure of the relevant wheel holding unit 100 of the locking member 130 caused by action effect.

<Seat 150>

Next, referring especially to Fig. 1, Fig. 2 and Figure 28~Figure 30, illustrate the seat being supported on seat bearing unit 40 150.As shown in figure 28, seat 150 is substantially right centered on the median plane on the width extended along the longitudinal direction on the whole Claim.

As shown in Figure 1, Figure 2 and shown in Figure 28~Figure 30, seat 150 has：Seat portion 156；Back-rest 157, itself and seat portion 156 connections, positioned at the rear in seat portion 156；The side surface part 160 of left and right two, it is extended out from seat portion 156 to both sides；It is left Right two tops side surface part 167, it is extended out by back-rest 157.Mainly supporting is rided on perambulator 10 in seat portion 156 The buttocks of infant.In addition, back-rest 157 is configured on the position facing with the back of infant.Side surface part (the 1st side Portion) 160, and the composition of top side surface part (the 2nd side surface part) 167 is positioned at the side of sidewall portion of the side of infant.In addition, seat 150 is also With upper portion 169, the top position which leaves seat portion 156 with back-rest 157 is connected.As shown in figure 4, The top side surface part 167 of the connection of upper portion 169 left and right two, plays a role as headrest.

As described above, seat portion 156 is mainly supported by the seat portion supporting member 50 of seat bearing unit 40.Such as Figure 28 institutes Show, the hinder marginal part in seat portion 156 is connected with back-rest 157, a pair of of side edge part in seat portion 156 respectively with corresponding side Side surface part 160 is connected.Back-rest 157 is mainly supported by back-rest supporting member 60.As shown in figure 28, when overlooking, backrest The substantially chamfered shape in portion 157, so that its rectangular-shaped short side is curvilinear.Back-rest 157 is to form above-mentioned curve-like Edge be separately located behind with seat portion 156 or the mode of top configures.

The lower edge of back-rest 157 is connected with the hinder marginal part in seat portion 156.Back-rest 157 and seat portion 156 are for example logical The mode for crossing suture is connected, and in this case, the coupling part in back-rest 157 and seat portion 156 in wire by extending Suture is formed, and action or jackknife action, the seat portion 156 of seat 150 and back-rest 157 are leaned to baby's vehicle main body 11 It is close to each other.At this time, seat portion 156 and back-rest 157 can be using the coupling parts for the wire being made of suture as axis of oscillation Opposing oscillatory.

Linear a pair of of side edge part of back-rest 157 is connected with each top side surface part 167.In addition, back-rest 157 Curvilinear rising wood is connected with the upper portion 169 to play a role as headrest.A pair of of top side surface part 167 is supported by seat The side supporting member 45 of unit 40 supports, and upper portion 169 is supported by the top supporting member 41 of seat bearing unit 40.Scheming In example shown in 28, a pair of of top side surface part 167 and upper portion 169 are integrally formed by identical material.In this example embodiment, it is a pair of Top side surface part 167 and upper portion 169 are for example connected by suturing with back-rest 157.In this case, a pair of of upper side Face 167, upper portion 169 and the coupling part of back-rest 157 are formed by substantially u-shaped suture.As described above, top branch Bearing portion part 41 can be swung relative to back-rest supporting member 60.With top supporting member 41 relative to back-rest supporting part The swing of part 60, upper portion 169 are put using the coupling part for the wire being made of suture as axis of oscillation relative to back-rest 157 It is dynamic.

In addition, as depicted in figs. 1 and 2, side supporting member 45 is maintained relative to by backrest from the limitation of action is leaned to The state that the surface that portion's supporting member 60 is formed erects.Therefore the top side surface part 167 supported by side supporting member 45 is made not Limited by action is leaned to, the side of the infant on back-rest 157 is leaned against erects.Top side surface part 167 is positioned at baby children There is larger width on the top position of the side on youngster head.In addition, top side surface part 167 is close under seat portion 156 Orientation is put with lesser width, and as shown in Figure 29 and Figure 30, top side surface part 167 has without prejudice to seat portion 156 and leans on The close structure in back 157.

Seat portion 156, back-rest 157, top side surface part 167 and upper portion 169 can be with the baby childrens of seating perambulator 10 Youngster directly contacts.Therefore, seat portion 156, back-rest 157, top side surface part 167 and upper portion 169 are by using with elasticity Cloth material and formed, for example, by using the cloth material clamped the materials such as flexible sponge by two blocks of clothes and formed Or cloth material is formed by flexible cloth and is formed.In addition, for seat portion 156, back-rest 157, top side surface part 167 and the cloth material of upper portion 169 can be strengthened comprising reinforcing plate etc..Furthermore, it is contemplated that the cleaning of seat 150, excellent Select seat 150 to be fixed in baby's vehicle main body 11 and can be detached from.Utilize each position installed in seat 150 On button etc. known to connector, seat 150 is fixed in baby's vehicle main body 11.

Next, explain two side surface parts 160 in left and right.As shown in Figure 28~Figure 30, each side surface part 160 has： Side body portion 161, it is connected with seat portion 156；Side joint 165, its at least a portion are upper with corresponding side The back side of square side surface part 167 is facing, and with side body portion 161 and, in back-rest 157 and top side surface part 167 at least One is connected.In view of appearance, each side surface part 160 from the state that leans to limitation, i.e. as shown in Fig. 2 and Figure 30, preferably In the state of back-rest 157 was fallen completely relative to seat portion 156, the edge extension of the rear side in side body portion 161 To the position facing with the back side of top side surface part 167, in other words, the side surface part 167 above of side joint 165 with And/or the inside side of person's back-rest 157, do not expose to the facing side of infant.In addition, here, it will be located at riding in The facing surface opposite side face of infant on perambulator 10 is known as " the inside ".

In the example in the figures, the side joint 165 of the side surface part 160 in left side and the lateral margin in the left side of back-rest 157 Portion is connected, and the side joint 165 of the side surface part 160 on right side is connected with the side edge part on the right side of back-rest 157.In addition, In the example in the figures, the side joint 165 of the side surface part 160 in left side side and back-rest 157 and left side from the inside is upper The coupling part of square side surface part 167 is connected, the side joint 165 of the side surface part 160 on right side side and back-rest from the inside 157 are connected with the coupling part of the top side surface part 167 on right side.The side joint 165 of each side surface part 160 can be with backrest Together with the side edge part of the corresponding side in portion 157 and 167 overlapping suture of top side surface part of corresponding side.In addition, scheming In the example shown, the side body portion 161 of the side surface part 160 in left side is connected with the side edge part in the left side in seat portion 156, also Have, be connected with the side edge part in the left side in the section below of back-rest 157.Equally, the side body of the side surface part 160 on right side Portion 161 is connected with the side edge part on the right side in seat portion 156, in addition, the lateral margin with the right side in the section below of back-rest 157 Portion is connected.The side body portion 161 of each side surface part 160 can be with the side edge part and backrest of the corresponding side in seat portion 156 The side edge part overlapping suture of the corresponding side in portion 157 is together.

In the example in the figures, the side body portion 161 of each side surface part 160 and side joint 165 and seat portion 165 and Back-rest 157 is continuously coupled.Especially in the example in the figures, the coupling part of each top side surface part 167 and back-rest 157 The position of lower end and point of side body portion 161 and side joint 165 in the connection edge of side surface part 160 and back-rest 157 Boundary's position consistency.

In addition, swung to from side surface part 160 is more efficiently prevented from the inside of width or because being deformed to width outside And from the viewpoint of extending in the direction of the width, preferred side master of the side joint 165 of side surface part 160 than side surface part 160 Body portion 161 is easily deformed.As an example, the side joint 165 of preferably side surface part 160 uses the side than side surface part 160 The cloth that face main part 161 is easily deformed.Specifically, Ke Yishi：With above-mentioned seat portion 156, back-rest 157, top side Portion 167 and upper portion 169 are identical, and side body portion 161 is formed by flexible material, and only form side by cloth Face connecting portion 165.

Side body portion 161 is kept the state erected from seat portion 165, from side and rides in the baby on perambulator 10 Child is facing.From this point of view, the side body portion 161 preferably contacted with infant uses flexible material.For example, It is preferred that side body portion 161 uses cloth material clamped the materials such as flexible sponge by two blocks of clothes and formed etc., has The cloth material of independence.

In addition, as shown in Figure 28~Figure 30, formed with the 1st broken line 162a in the side body portion 161 of each side surface part 160 With the 2nd broken line 162b.As shown in Figure 28~Figure 30, broken line 162a, 162b are approximately along with the company in seat portion 156 and back-rest 157 The coupling part and seat portion of radial line path extension centered on the side of socket part point, the seat portion 156 and back-rest 157 156 is consistent with the axis of oscillation of back-rest 157.Side body portion 161 is divided into by two broken lines 162a, 162b and seat Part 1 161a that portion 156 is connected, the third portion 161c being connected with side joint 165, configuration are in part 1 161a Part 2 161b between third portion 161c.

Broken line 162a, 162b are the regions in wire extension being easily deformed than the other parts in side body portion 161. In example illustrated, broken line 162a, 162b are formed as the suture being formed on flexible cloth material.In addition, conduct Other shapes beyond suture, can be the through hole formed in the linear alignment, alternatively, forming broken line by the line after hot compression 162a、162b。

As shown in Figure 28~Figure 30, be respectively arranged with the inside side of each side surface part 160 strengthening part 163a, 163b, 163c.Strengthening part 163a, 163b, 163c are plate-shaped member, are formed by the material being easily deformed than side body portion 161, example As the resin as polypropylene is formed, the strengthening part 163a, 163b, 163c are separately positioned on each side body portion 161 On 1~third portion 161a, 161b, 161c.

In addition, as shown in figure 28, seat 150 also has a covering part 170, the covering part 170 is by top side 167 and upper The outer edge for leaving back-rest 157 in square portion 169 extends out.As depicted in figs. 1 and 2, covering part 170 is used to cover back-rest 157th, a part for the inside of top side surface part 167 and upper portion 169.In addition, with the inside of top side surface part 167 is facing matches somebody with somebody The side body portion 161 for the side surface part 160 put and a part for side joint 165 are covered by the covering part 170.In addition, The diagram to covering part 170 is eliminated in Figure 29 and Figure 30.

As shown in figure 28, connector 153 is provided with the side surface part 160 of seat 150, the connector 153 and seat branch Bearing unit 40 is connected and can be removed from the seat bearing unit 40.Connector 153 is arranged in side body portion 161 Third portion 161c on.Especially in the example in the figures, connector 153 is on the inside of third portion 161c, configuration Leave near seat portion 156 and the side of back-rest 157, that is, configured near the edge of third portion 161c (rising wood) at it, And configuration is near side joint 165.In addition, when leaning to action in seat bearing unit 40 relative to body frame The connector 46 that can be engaged with the connector 153 is provided with the component that frame 15 is swung.Seat 150 and seat bearing unit 40 It is connected by connector 153,46.A pair of of connector 153,46 is made of button, hook and retaining ring, magic tape etc..

As shown in Fig. 8, Fig. 9, Figure 10 and Figure 11, in the example in the figures, connector 46 is installed on seat bearing unit 40 Side supporting member 45 on.In side view perambulator 10, the position that connector 46 is provided with side supporting member 45 is deviateed Side supporting member 45 and main body frame 15 axis of oscillation sc1, i.e. deviate front lower place connecting portion 45a, and configuration is being swung Near axis sc1.In addition, as shown in Figure 8 and Figure 9, in side view perambulator 10, in side, supporting member 45 is relative to body frame In the state of frame 15 is swung upward, the position that connector 46 is provided with side supporting member 45 is located at the side supporting member 45 and main body frame 15 axis of oscillation sc1 top, in side, supporting member 45 is rearward swung relative to main body frame 15 In the state of, the position that connector 46 is provided with side supporting member 45 is located at the side supporting member 45 and main body frame 15 Axis of oscillation sc1 rear.In addition, in side view perambulator 10, in side supporting member 45 relative to main body frame 15 to In the state of top is swung, the state that is rearward swung relative to main body frame 15 relative to side supporting member 45, side branch The position that connector 46 is provided with bearing portion part 45 is located at front and above.

Next, the functions and effects of the seat 150 for the present embodiment that explanation is made of said structure.

First, according to the present embodiment, the side surface part 160 of seat 150 and seat bearing unit 40 by connector 46, 153 are connected and can dismantle.Therefore, as shown in Fig. 1 and Fig. 2 or Figure 29 and Figure 30, can effectively inhibit with baby Youngster's vehicle main body 11 leans to action, and side surface part 160 swings on the inside of width or to width outer expandable.That is, according to Present embodiment can effectively prevent side surface part 160 from leaving baby's vehicle main body 11 because swinging to inner side.Therefore can be effectively Clothes etc. is avoided to be sandwiched between seat 150 and baby's vehicle main body 11.In addition, when making infant ride in perambulator 10, fall Side surface part 160 inwardly can hinder infant sitting in seat portion 156.Therefore, by preventing side surface part 160 from swinging to inner side, So as to stablize and infant is taken perambulator 10.In addition, prevent side surface part 160 from swinging to inner side and being conducive to improve The appearance of perambulator.In addition, by effectively preventing side surface part 160 from, to width outer expandable, can fold and be unfolded During baby's vehicle main body 11,11 interference of side surface part 160 and baby's vehicle main body is effectively prevented from.So as to stably to perambulator Main body 11 carries out folding operation and expansion operates.

In addition, at the same time, connector 46 is arranged on when leaning to action and is put in seat bearing unit 40 relative to main body frame 15 On dynamic component, specifically, it is arranged on side supporting member 45.Therefore, connection is passed through in the side surface part 160 of seat 150 The part that part 46,153 is connected with side connecting component 45 and the part at least near it can be with the seats of perambulator 10 Bearing unit 40 leans to action and acts.Therefore, can be all the time by suitably setting the installation site of connector 46,153 Relative to the back-rest 157 for leaning to action and movement, side surface part 160 is configured in position.So as to abundant The side surface part for suppressing seat is swung on the inside of width or to width outer expandable, and can be relative to back-rest By in the side surface part configuration in position of seat.

In addition, in the above-described embodiment, in side view perambulator 10, connector 46 is provided with side supporting member 45 Position deviate side supporting member 45 and main body frame 15 axis of oscillation sc1, i.e. deviate front lower place connecting portion 45a, and Configuration is near axis of oscillation sc1.Therefore, it is possible to which side surface part 160 is configured in position relative to back-rest 157, In addition, can be more stable against following situation：With the action that leans to of back-rest 157, side surface part 160 is provided with connection There is larger movement, the part being provided with side surface part 160 beyond the position of connector 153, such as side surface part in the position of part 153 It is located at the part being connected with seat portion 156 and the part being provided between the part of connector 153, in more detail, side in 160 The part 2 161b of face main part 161 is swung on the inside of width or outside.

In addition, in the present embodiment, as shown in Figure 8 and Figure 9, in side view perambulator 10, the supporting member 45 in side In the state of being swung upward relative to main body frame 15, the position of connector 46 is provided with side supporting member 45 positioned at this The top of the axis of oscillation sc1 of side supporting member 45 and main body frame 15, in side, supporting member 45 is relative to main body frame In the state of 15 rearward swing, the position that connector 46 is provided with side supporting member 45 is located at the side supporting member 45 With the rear of the axis of oscillation sc1 of main body frame 15.In addition, in side view perambulator 10, in side supporting member 45 relative to In the state of main body frame 15 is swung upward, rearward swung relative to main body frame 15 relative to side supporting member 45 State, the position that connector 46 is provided with side supporting member 45 are located at front and above.Therefore, in back-rest 157 Erected relative to seat portion 156, in the state of infant sitting is on seat 150, side surface part 160 is relatively moved and drawn forwards Upward.So as to suitably protect the infant rided on perambulator 10 from side by side surface part 160.In addition, by Seat portion 156 is swung at back 157, and in the state of infant is lain on seat 150, side surface part 160 rearward relatively moves.So as to The infant lain in perambulator 10 can be suitably protected from side by side surface part 160 and top side surface part 167.

In addition, according to the present embodiment, the part for becoming the side wall of the seat 150 in baby's vehicle main body 11 is divided It is segmented into the side surface part 160 to extend out from 156 side of seat portion and the top side surface part to extend out from 157 side of back-rest 167.Therefore, as shown in Fig. 1 and Fig. 2 or Figure 29 and Figure 30, when with the action that leans to of baby's vehicle main body 11, back-rest 157 When being erected from tilt state, side surface part 160 and top side surface part 167 can relatively move.Therefore, it is possible to effectively inhibit side For example swing on the inside of width or because deforming to width and to width outer expandable in portion 160.

In addition, side surface part 160 is connected by side joint 165 with back-rest 157, the side joint 165 is from inner Surface side and top side surface part 167 are facing.Therefore, easily seat 150 is operated.

In addition, according to the present embodiment, side joint 165 is by the material that is easily deformed than the material in side body portion 161 Material is formed.During using such a seat 150, when leaning to action or jackknife action with baby's vehicle main body 11, seat 150 When back-rest 157 changes relative to the angle of inclination in seat portion 156, the side surface part in back-rest 157 and seat portion 156 is connected 160 are easily deformed at the side joint 165 of the inside side of side surface part 167 on the top, and the deformation at side body portion 161 It is suppressed.So as to when seat portion 156 and back-rest 157 are close, relatively move top side surface part 167 and side surface part 160 When, the side body portion 161 that can be more effectively prevented from side surface part 160 is swung on the inside of width or to outside width Side extends.

In addition, according to the above embodiment, side surface part 160 passes through the coupling part through seat portion 156 and back-rest 157 Side end and in wire extension coupling part be connected with seat portion 156 and back-rest 157.Therefore, it is possible to prevent in baby Near the waist of the infant taken on youngster's car 10, in forming hole or gap on seat 150, perambulator 10 is set to have well Security.

In addition, according to the above embodiment, coupling part, the side joint of side joint 165 and back-rest 157 156 and side body portion 161 boundary approximately along the radioactive ray centered on the axis of oscillation of seat portion 156 and back-rest 157 Shape track extends.Therefore, when leaning to action or jackknife action with baby's vehicle main body 11, the back-rest 157 of seat 150 is opposite When the angle of inclination in seat portion 156 changes, the side surface part 160 in back-rest 157 and seat portion 156 side on the top is connected It is easily deformed at the side joint 165 of the inside side in portion 167.So as to be more effectively prevented from the side of side surface part 160 Main part 161 swings on the inside of width or to width outer expandable.

In addition, according to the present embodiment, formed with the 1st broken line 162a and in the side body portion 161 of side surface part 160 2 broken line 162b.Also, these broken lines 162a, 162b are in centered on showing the axis of oscillation of seat portion 256 and back-rest 257 greatly Radial line extends.For example, back-rest 157 and seat portion 156 are very close under such circumstances when such as perambulator 10 folds, Side surface part 160 not only deforms at side joint 165, is bent also at the 1st broken line 162a and the 2nd broken line 162b, the 1st Part 161a, part 2 161b and third portion 161c are overlapping so that side body portion 161 folds.So as in perambulator 10 when folding, and effectively prevents side surface part 160 from swinging on the inside of width and to width outer expandable.

In addition, according to the present embodiment, on 1~third portion 161a, 161b, the 161c in side body portion 161 respectively It is provided with strengthening part 163a, 163b, 163c.It can be leaned to by the strengthening part 163a, 163b, 163c in back-rest 157 When or effectively prevent when perambulator 10 folds side surface part 160 from swinging on the inside of width and to expanding on the outside of width Exhibition.Especially, the strengthening part 163c being arranged on third portion 161c is configured near connector 153.Therefore, even if side Portion 160 is acted with the action of side supporting member 45, passes through the connection positioned at connection side supporting member 45 and side surface part 160 Strengthening part 163c near part 46,153 can effectively prevent side surface part 160 from swinging on the inside of width and to width side Extend laterally.

<Basket 90>

Next, referring especially to Fig. 5, Fig. 7, Figure 31 and Figure 32, illustrate basket 90.Basket 90 is installed on baby car owner On body 11, the lower section of seat bearing unit 40 is supported on.As shown in figure 5, basket 90 have basal surface 91, front surface 93, after Surface 92 and the contralateral surface 94 extended between front surface 93 and rear surface 92.Wherein, basal surface 91 includes bottom plate 96.Separately Outside, rear portion of the rear surface 92 including bottom plate 96, the in the example in the figures back plate 97 including being connected with rear edge.Bottom plate 96 It can be covered and be included in basal surface 91 and rear surface 92 by cloth material respectively with back plate 97.Back plate 97 can be relative to bottom plate 96 are swung centered on the axis db extended in the direction of the width.As shown in figure 5, front surface 93 or the forward portion of side surface 94 It is connected with the center section of side surface 94 with baby's vehicle main body 11.So as to which the rear portion of basket 90 supports list to seat Expose and be open in the rear of member 40.

Figure 31 and Figure 32 represents bottom plate 96 and back plate 97.In the specific example shown in Figure 31, the upper surface of bottom plate 96 (into For the surface of the inner side of basket 90) rear portion be connected with connecting material 98 by seam 98a in the width direction, and And the decentralization part of the front surface (surface for becoming the inner side of basket 90) of back plate 97 and connecting material 98 are by along width side To seam 98a be connected.Bottom plate 96 and back plate 97 with certain rigid material supported oneself for example by forming, connecting material 98 materials for having flexibility for example as cloth are formed.So that bottom plate 96 is connected with back plate 97 and being capable of opposite pendulum It is dynamic.

In addition, being provided with force application part 99 on bottom plate 96 and back plate 97, the force application part 99 is in bottom plate 96 and back plate 97 Between extend.Force application part 99 is exerted a force in a manner of the rear surface 92 of basket 90 is swung to rear by basal surface 91. In specific example shown in Figure 32.Force application part 99 is, for example, the elastic material being made of rubber, in the expanded state its one end On bottom plate 96, the other end is installed in back plate 97, so as to act power.

As it appears from the above, in the basket 90 of present embodiment, by force application part 99 so that the rear surface 92 of basket 90 The mode that rear is swung to by basal surface 91 exerts a force.Therefore, because the rear surface 92 of basket 90 is rearward unfolded, thus energy Enough it is easily put into or takes out article.Further, since the inner case of basket 90 is easily confirmed with eye, it is thus possible to effectively prevent Only forget to take out article out of basket 90.In addition, due to can effectively prevent from forgetting to take out article, it is thus possible to effectively Prevent because forgetting that the situation for the jackknife action that perambulator 10 is hindered taking out article occurs.

In addition, as shown in figure 5, the upper limb of side surface 94 is formed as side reinforcement edge 94a, in front surface 93 and rear surface The state of tensioning is maintained between 92.Due to being tensioned because of the side surface 94 of basket 90 without swinging to inner side, thus it is easily put into Or take out article.Further, since the inner case of basket 90 is easily confirmed with eye, it is thus possible to effectively prevent from forgetting from putting Article is taken out in thing basket 90.In addition, due to can effectively prevent from forgetting to take out article, it is thus possible to effectively prevent because forgetting Take out article and hinder the situation of the jackknife action of perambulator 10 to occur.

In addition, in the present embodiment, baby's vehicle main body 11 can fold.Also, as shown in fig. 7, from the side by During baby's vehicle main body 11 after folding, the rear surface 92 of basket 90 can be under the action of the active force from force application part 99 Tilt, so that the upper limb of baby's vehicle main body 11 upon deployment is located at the lower section of the lower edge of baby's vehicle main body 11 upon deployment.In picture So folding baby car 10 when, the article being accommodated in basket 90 automatically can be out of basket 90 because of the inclination of rear surface 92 Out.This can effectively prevent from forgetting taking out article out of basket 90, so effectively prevent because forgetting to take out article and The situation of the jackknife action of perambulator 10 is hindered to occur.

In addition, in the present embodiment, as shown in fig. 7, in baby's vehicle main body 11 after being folded from the side, glove The basal surface 91 of basket 90 can tilt, so that the trailing edge of baby's vehicle main body 11 upon deployment is located at baby's vehicle main body 11 upon deployment Leading edge lower section.In folding baby car 10 like this, be accommodated in the article in basket 90 because of the inclination of basal surface 91 and Automatically can be out of basket 90 out.This can effectively prevent from forgetting to take out article out of basket 90, and then effectively prevent Only because the situation for the jackknife action for forgetting to hinder perambulator 10 taking out article occurs.

Claims (9)

1. a kind of perambulator, has baby's vehicle main body, handle, wheel holding unit, wherein,

Baby's vehicle main body has foreleg and back leg,

The handle is connected with baby's vehicle main body and can be relative to baby's vehicle main body in the 1st position and the 2nd position Between swing,

Wheel holding unit is arranged at least one in the foreleg and the back leg, is had：

Wheel；

Rotor, it supports the wheel and can simultaneously rotate；

Fixed body, it is installed at least one in the foreleg and the back leg, and with the pivot center with the wheel Support rotary body can simultaneously rotate centered on not parallel axis；

Locking member, it can be moved between latched position and latch-release position, and the locking member is located at latched position When, limit the rotor and rotated relative to the fixed body, when the locking member is located at latch-release position, the rotation Body can be rotated relative to the fixed body,

Switching mechanism is provided with the perambulator, the switching mechanism is according to the handle relative to baby's vehicle main body Swing, make the locking member from the latch-release position to the latched position or from the latched position to described Latch-release position is moved,

The switching mechanism has：

1st switching part, it is arranged on the handle and can be acted with the swing of the handle；

2nd switching part, it is supported on the back leg and can be with the action of the 1st switching part and relative to described Back leg acts；

Transmission mechanism, the action of the 2nd switching part is passed to the locking member by it,

1st switching part has cam bearing surface, is acted in the 1st switching part with the swing of the handle When, the cam bearing surface is abutted against with the 2nd switching part, makes the 2nd switching part phase by the cam bearing surface Acted for the back leg,

2nd switching part has the cam contact piece that is contacted with the cam bearing surface, in the cam contact piece with institute The position for stating the contact of cam bearing surface changes with the swing of the handle,

The position contacted in the cam bearing surface with the cam contact piece changes with the swing of the handle,

When the handle is configured at some position between the 1st position and the 2nd position, the cam bearing surface with The cam contact piece the whole region contacted with the cam bearing surface is facing.

2. perambulator according to claim 1, it is characterised in that

When the handle is swung relative to baby's vehicle main body to certain orientation, in the cam contact piece with the cam By the upstream side in the mobile route of the cam bearing surface, downstream side changes for the position of bearing surface contact.

3. perambulator according to claim 1 or 2, it is characterised in that

In the state of the handle is located at the 1st position, the cam bearing surface is configured to, its positioned at only with the handle It is contacted with from the 1st position to cam bearing surface described in the 2nd position swing process in the position of cam contact piece On a part of facing position；

In the state of the handle is located at the 2nd position, the cam bearing surface is configured to, its positioned at only with the handle It is contacted with from the 1st position to cam bearing surface described in the 2nd position swing process in the position of cam contact piece On a part of facing position.

4. a kind of perambulator, has baby's vehicle main body, handle, wheel holding unit, wherein,

Baby's vehicle main body has foreleg and back leg,

The handle is connected with baby's vehicle main body and can swung relative to baby's vehicle main body,

Wheel holding unit is arranged at least one in the foreleg and the back leg, is had：

Wheel；

Rotor, it supports the wheel and can simultaneously rotate；

Fixed body, it is installed at least one in the foreleg and the back leg, and with the pivot center with the wheel Support rotary body can simultaneously rotate centered on not parallel axis；

Locking member, it can be moved between latched position and latch-release position, and the locking member is located at latched position When, limit the rotor and rotated relative to the fixed body, when the locking member is located at latch-release position, the rotation Body can be rotated relative to the fixed body,

Switching mechanism is provided with the perambulator, the switching mechanism is according to the handle relative to baby's vehicle main body Swing, make the locking member from the latch-release position to the latched position or from the latched position to described Latch-release position is moved,

The switching mechanism has：

1st switching part, it is arranged on the handle and can be acted with the swing of the handle；

2nd switching part, it is supported on the back leg and can be with the action of the 1st switching part and relative to described Back leg acts；

Transmission mechanism, the action of the 2nd switching part is passed to the locking member by it,

1st switching part has cam bearing surface, is acted in the 1st switching part with the swing of the handle When, the cam bearing surface is abutted against with the 2nd switching part, makes the 2nd switching part edge by the cam bearing surface The back leg action,

2nd switching part has the cam contact piece that is contacted with the cam bearing surface, in the cam contact piece with institute The position for stating the contact of cam bearing surface changes with the swing of the handle,

The cam contact piece has at least two cam contact protuberances prominent to the cam bearing surface,

Cam contact protuberance configuration along the cam bearing surface with the swing of the handle formed move road On the position being separated from each other on footpath,

The handle can be swung relative to baby's vehicle main body between the 1st position and the 2nd position,

When some position between the 1st position and the 2nd position of the handle, the cam bearing surface is same When contacted with the two cam contact protuberances for being moved along it path and being adjacent to.

5. a kind of perambulator, has baby's vehicle main body, handle, wheel holding unit, wherein,

Baby's vehicle main body has foreleg and back leg,

The handle is connected with baby's vehicle main body and can swung relative to baby's vehicle main body,

Wheel holding unit is arranged at least one in the foreleg and the back leg, is had：

Wheel；

Rotor, it supports the wheel and can simultaneously rotate；

Fixed body, it is installed at least one in the foreleg and the back leg, and with the pivot center with the wheel Support rotary body can simultaneously rotate centered on not parallel axis；

Locking member, it can be moved between latched position and latch-release position, and the locking member is located at latched position When, limit the rotor and rotated relative to the fixed body, when the locking member is located at latch-release position, the rotation Body can be rotated relative to the fixed body,

Switching mechanism is provided with the perambulator, the switching mechanism is according to the handle relative to baby's vehicle main body Swing, make the locking member from the latch-release position to the latched position or from the latched position to described Latch-release position is moved,

The switching mechanism has：

1st switching part, it is arranged on the handle and can be acted with the swing of the handle；

2nd switching part, it is supported on the back leg and can be with the action of the 1st switching part and relative to described Back leg acts；

Transmission mechanism, the action of the 2nd switching part is passed to the locking member by it,

1st switching part has cam bearing surface, is acted in the 1st switching part with the swing of the handle When, the cam bearing surface is abutted against with the 2nd switching part, makes the 2nd switching part edge by the cam bearing surface The back leg action,

2nd switching part has the cam contact piece that is contacted with the cam bearing surface, in the cam contact piece with institute The position for stating the contact of cam bearing surface changes with the swing of the handle,

The handle can be swung relative to baby's vehicle main body between the 1st position and the 2nd position,

The cam contact piece cam contact protuberance prominent to the cam bearing surface from two is formed, i.e. convex with the 1st Wheel contact protuberance and the 2nd cam contact protuberance, the 1st cam contact protruding parts are in the handle by described 1st Put to the 2nd position move when the cam bearing surface mobile route on upstream side, and the 2nd cam contact Protuberance is then located at the downstream side on the mobile route of the cam bearing surface,

In the state of the handle is located at the 1st position, the cam bearing surface only with the 1st cam contact protuberance It is facing with the 1st cam contact protuberance in the 2nd cam contact protuberance and contact therewith,

In the state of the handle is located at the 2nd position, the cam bearing surface only with the 1st cam contact protuberance It is facing with the 2nd cam contact protuberance in the 2nd cam contact protuberance and contact therewith.

6. perambulator according to claim 5, it is characterised in that

When 1 centre position of the handle between the 1st position and the 2nd position, the cam bearing surface It is facing with the 1st cam contact protuberance and the 2nd cam contact protuberance both of which and only with the 1st cam Contact protuberance is in contact,

When 2 centre position of the handle between the 1st position and the 2nd position, the cam bearing surface It is facing with the 1st cam contact protuberance and the 2nd cam contact protuberance both of which and only with the 2nd cam Contact protuberance is in contact.

7. perambulator according to claim 6, it is characterised in that

When some position between the 1st centre position and the 2nd centre position of the handle, the cam supports Junction is in contact with the 1st cam contact protuberance and the 2nd cam contact protuberance both of which.

8. the perambulator according to any one in claim 5~7, it is characterised in that

When the axis of oscillation swung along the handle relative to baby's vehicle main body is observed, by the handle relative to described Baby's vehicle main body swing axis of oscillation to each position of the cam bearing surface air line distance by one on cam bearing surface Hold it is progressively longer to the other end on cam bearing surface, wherein, one end on the cam bearing surface is the handle by described 1st position to the 2nd position swing when moving direction on front side, and the other end on the cam bearing surface is institute State handle from the 1st position to the 2nd position swing when moving direction on rear side,

Moreover, when the handle is located at 2 position, the swing that is swung by the handle relative to baby's vehicle main body Axis to the 2nd cam contact protuberance air line distance than the pendulum that is swung by the handle relative to baby's vehicle main body The air line distance of dynamic center to the 1st cam contact protuberance is short.

9. a kind of perambulator, has baby's vehicle main body, handle, wheel holding unit, wherein,

Baby's vehicle main body has foreleg and back leg,

The handle is connected with baby's vehicle main body and can swung relative to baby's vehicle main body,

Wheel holding unit is arranged at least one in the foreleg and the back leg, is had：

Wheel；

Rotor, it supports the wheel and can simultaneously rotate；

Fixed body, it is installed at least one in the foreleg and the back leg, and with the pivot center with the wheel Support rotary body can simultaneously rotate centered on not parallel axis；

Locking member, it can be moved between latched position and latch-release position, and the locking member is located at latched position When, limit the rotor and rotated relative to the fixed body, when the locking member is located at latch-release position, the rotation Body can be rotated relative to the fixed body,

Switching mechanism is provided with the perambulator, the switching mechanism is according to the handle relative to baby's vehicle main body Swing, make the locking member from the latch-release position to the latched position or from the latched position to described Latch-release position is moved,

The switching mechanism has：

1st switching part, it is arranged on the handle and can be acted with the swing of the handle；

2nd switching part, it is supported on the back leg and can be with the action of the 1st switching part and relative to described Back leg acts；

Transmission mechanism, the action of the 2nd switching part is passed to the locking member by it,

1st switching part has cam bearing surface, is acted in the 1st switching part with the swing of the handle When, the cam bearing surface is abutted against with the 2nd switching part, makes the 2nd switching part edge by the cam bearing surface The back leg action,

2nd switching part has the cam contact piece that is contacted with the cam bearing surface, in the cam contact piece with institute The position for stating the contact of cam bearing surface changes with the swing of the handle,

When the oscillation center swung along the handle relative to baby's vehicle main body is observed, by the handle relative to institute State baby's vehicle main body swing oscillation center to each position of the cam bearing surface air line distance by cam bearing surface One end is progressively longer to the other end on cam bearing surface, wherein, one end on the cam bearing surface is the handle by can The front side on moving direction when a lateral opposite side in hunting range is swung, and the other end on the cam bearing surface The rear side on moving direction when being swung for the handle by the lateral opposite side in swingable scope, moreover, described convex The width taken turns the edge direction parallel with the axis of oscillation of the handle of bearing surface and formed is by one on the cam bearing surface The other end on the cam bearing surface of the rear side on as moving direction is held to become larger.