CN201056224Y

CN201056224Y - Perambulator wheel orienting device

Info

Publication number: CN201056224Y
Application number: CNU2007201215523U
Authority: CN
Inventors: 陈荣财
Original assignee: Individual
Current assignee: Dongguan Jinwang Children Products Co Ltd
Priority date: 2007-07-19
Filing date: 2007-07-19
Publication date: 2008-05-07
Anticipated expiration: 2017-07-19

Abstract

The utility model relates to a perambulator especially relates to a perambulator wheel orienting device. The forklift comprises a forklift body and a forklift fork, wherein wheels are arranged at the lower end of the forklift fork through an axle; also comprises a connecting body; the connector is provided with two bearing holes which are concentrically arranged, and the axes of the bearing holes are vertically arranged; the lower end of the upper bearing hole is provided with a bearing axial positioning step, and the upper end of the lower bearing hole is provided with a bearing axial positioning step; the connecting body is fixedly connected with the vehicle body; the vehicle body is provided with a pipe fitting, and the pipe fitting and the connecting body form fixed connection; a rolling bearing is arranged in the upper bearing hole, and a rolling bearing capable of bearing axial force is arranged in the lower bearing hole; the upper end of the fork is fixedly connected with a vertical shaft, the upper end of the vertical shaft is connected with a nut through threads, and the lower end of the vertical shaft is provided with a bearing positioning step; the utility model provides a perambulator wheel orienting device.

Description

The stroller wheel orienting device

Technical field

The utility model relates to perambulator, relates in particular to a kind of stroller wheel orienting device.

Background technology

Perambulator does not on the market have directional device for wheel substantially at present.The push rod of perambulator mostly is arranged on the vehicle frame, because the restriction of structure and cost can not be made special steering hardware as large-scale manual tricycle or four-wheeled, thereby can't directly use the push rod orientation.These perambulators, mostly utilize steerable wheel freely to turn to function, the control that adds manpower realizes turning to, but this perambulator does not have orientating function, and direction bad control, especially road surface are not very flat during use, when needing to keep straight on again, be difficult to the control direction of traffic, go-cart person's effort, the baby in the car does not have comfort yet.And,, do not have the perambulator of directional device for wheel such as one hand craspedodrome go-cart for specific situation, be difficult to realize.

The utility model content

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art part and a kind of stroller wheel orienting device is provided.

The purpose of this utility model can be achieved through the following technical solutions:

A kind of stroller wheel orienting device comprises car body and car fork, and car fork lower end is provided with wheel by axletree; Also comprise connector; Connector has two bearing holes that are provided with one heart, and the axle center of bearing hole vertically is provided with; The lower end in head bearing hole has bearing axle to positioning step, and the upper end in lower bearing hole has bearing axle to positioning step; Connector is captiveed joint with car body; Car body has a pipe fitting, and pipe fitting constitutes with connector and captives joint; One antifriction-bearing box is set in the head bearing hole, an antifriction-bearing box that can bear axial force is set in the lower bearing hole; Car is stuck end captive joint one vertical pivot, and the vertical pivot upper end is by the nut that is threaded, and the lower end of vertical pivot has the bearing positioning step; Described two bearing carrier rings are located at vertical pivot, and two bearings are between bearing positioning step and nut; It is characterized in that, also comprise the lockout mechanism of captiveing joint with the car fork, lockout mechanism comprises a frame, frame is provided with a vertical pilot hole, the bearing pin that setting can move up and down along pilot hole in the pilot hole, pilot hole is positioned at the lower end of bearing pin, and the upper end of bearing pin is provided with two feather keys, and two feather keys are symmetrical arranged on bearing pin; Also be pivoted on the frame and one stir body, stir that the body pivot is vertical with bearing pin to be provided with, stir body and be provided with a slotted hole, bearing pin is arranged among the slotted hole; Bearing pin locates to be provided with symmetrically the screens of two projections near stirring the body bottom surface; Sheathed compression spring on the bearing pin, the lower end butt of compression spring is stirred body, the upper end butt feather key of compression spring; Stir body and have acute angle of downward bending away from an end of pivot; The two side faces of stirring body is respectively equipped with a projection, stirs body two sides framework lateral plate is set, and is equipped with two confessions on each framework lateral plate and stirs the groove that the body projection snaps in, be i.e. first groove and second groove; Stir body and have two ultimate limit states,, stir body and turn to extreme lower position,, stir body and turn to the extreme higher position when stirring the body projection when snapping in second groove when stirring the body projection when snapping in first groove; Lockout mechanism also comprises a guide plate of captiveing joint with frame, and guide plate is flat is located at frame top, and the cooresponding position of guide plate and bearing pin is provided with a pilot hole, and pilot hole is provided with two and the cooresponding keyway of bearing pin feather key; The connector bottom surface is provided with a hole identical with the pilot hole diameter of guide plate, and the sidewall in hole is provided with the identical keyway of keyway with the pilot hole of guide plate; When car fork and lockout mechanism went to position to be locked, the hole of connector bottom surface and keyway overlapped with the hole of guide plate and the vertical projection of keyway.

The stroller wheel orienting device is characterized in that, the screens of bearing pin is identical in bearing pin position radially with the feather key of bearing pin, and two screens are arranged at two sides of stirring body slotted hole line of centers respectively.

The stroller wheel orienting device is characterized in that, the described body of stirring is that plastic material is made by the injection molded mode.

The stroller wheel orienting device, it is characterized in that described wheel is the front-wheel of three wheeled stroller, described guide plate is in the form of annular discs, when car fork and lockout mechanism went to wheel towards the dead ahead, the hole of connector bottom surface and keyway overlapped with the hole of guide plate and the vertical projection of keyway.

The stroller wheel orienting device is characterized in that, described connector has two parallel walls, i.e. upper wall and lower wall up and down; Upper wall is provided with a head bearing hole, and lower wall is provided with bearing hole, and the head bearing hole is provided with the lower bearing hole is concentric; The lower end in head bearing hole has bearing axle to positioning step, and the upper end in lower bearing hole has bearing axle to positioning step; Described connector is that sheet metal is converted into, and also has one section connecting wall between upper wall, the lower wall, and connecting wall is provided with upper wall and lower wall are vertical, and upper wall, lower wall, connecting wall have identical thickness; Upper wall is circular-arc away from an end of connecting wall, and lower wall also is same circular-arc away from an end of connecting wall; The diameter of described pipe fitting equals the distance between upper wall and the lower wall, and described pipe fitting has arc, and connector is located in outside the pipe fitting, and the arc of pipe fitting overlaps with the circular arc of the upper and lower wall of connector; Hole on the described connector bottom surface is arranged on the through hole on the lower wall.

The stroller wheel orienting device is characterized in that, captives joint by welding manner between connector and the car body pipe fitting; Described vertical pivot is fixedly installed on car by welding manner and sticks.

The stroller wheel orienting device is characterized in that, described lockout mechanism is arranged on car by welding manner and sticks portion the place ahead.

The stroller wheel orienting device is characterized in that, described guide plate is discoid, is arranged between car fork and the vertical pivot with welding manner.

The purpose of this utility model can also be achieved through the following technical solutions:

The stroller wheel orienting device comprises car body and car fork, and car fork lower end is provided with wheel by axletree; Also comprise connector; Connector has two bearing holes that are provided with one heart, and the axle center of bearing hole vertically is provided with; Connector is captiveed joint with car body; Car body has a pipe fitting, and pipe fitting constitutes with connector and captives joint; One antifriction-bearing box is set in the head bearing hole, an antifriction-bearing box that can bear axial force is set in the lower bearing hole; Car is stuck end captive joint one vertical pivot, and the vertical pivot upper end is by the nut that is threaded, and the lower end of vertical pivot has the bearing positioning step; Described two bearing carrier rings are located at vertical pivot, and two bearings are between bearing positioning step and nut; It is characterized in that, also comprise the lockout mechanism of captiveing joint with the car fork, lockout mechanism comprises a frame, frame is provided with a vertical pilot hole, the bearing pin that setting can move up and down along pilot hole in the pilot hole, pilot hole is positioned at the lower end of bearing pin, and the upper end of bearing pin is provided with two feather keys, and two feather keys are symmetrical arranged on bearing pin; Also be pivoted on the frame and one stir body, stir that the body pivot is vertical with bearing pin to be provided with, stir body and be provided with a slotted hole, bearing pin is arranged among the slotted hole; Bearing pin locates to be provided with symmetrically the screens of two projections near stirring the body bottom surface; Sheathed compression spring on the bearing pin, the lower end butt of compression spring is stirred body, the upper end butt feather key of compression spring; Stir body and have acute angle of downward bending away from an end of pivot; The two side faces of stirring body is respectively equipped with a projection, stirs body two sides framework lateral plate is set, and is equipped with two confessions on each framework lateral plate and stirs the groove that the body projection snaps in, be i.e. first groove and second groove; Stir body and have two ultimate limit states,, stir body and turn to extreme lower position,, stir body and turn to the extreme higher position when stirring the body projection when snapping in second groove when stirring the body projection when snapping in first groove; Lockout mechanism also comprises a guide plate of captiveing joint with frame, and guide plate is flat is located at frame top, and the cooresponding position of guide plate and bearing pin is provided with a pilot hole, and pilot hole is provided with two and the cooresponding keyway of bearing pin feather key; The connector bottom surface is provided with a hole identical with the pilot hole diameter of guide plate, and the sidewall in hole is provided with the identical keyway of keyway with the pilot hole of guide plate; When car fork and lockout mechanism went to position to be locked, the hole of connector bottom surface and keyway overlapped with the hole of guide plate and the vertical projection of keyway; Described two bearings are the bearing of outer astragal stopping step.

The purpose of this utility model can be achieved through the following technical solutions again:

The stroller wheel orienting device comprises car body and car fork, and car fork lower end is provided with wheel by axletree; Also comprise connector; Connector has two bearing holes that are provided with one heart, and the axle center of bearing hole vertically is provided with; The lower end in head bearing hole has bearing axle to positioning step, and the upper end in lower bearing hole has bearing axle to positioning step; Connector is captiveed joint with car body; Car body has a pipe fitting, and pipe fitting constitutes with connector and captives joint; One antifriction-bearing box is set in the head bearing hole, an antifriction-bearing box that can bear axial force is set in the lower bearing hole; Car is stuck end captive joint one vertical pivot, and the vertical pivot upper end is by the nut that is threaded, and the lower end of vertical pivot has bearing positioning step (this sentence deletion); Described two bearing carrier rings are located at vertical pivot, and two bearings are between bearing positioning step and nut; It is characterized in that, also comprise the lockout mechanism of captiveing joint with the car fork, lockout mechanism comprises a frame, frame is provided with a vertical pilot hole, the bearing pin that setting can move up and down along pilot hole in the pilot hole, pilot hole is positioned at the lower end of bearing pin, and the upper end of bearing pin is provided with two feather keys, and two feather keys are symmetrical arranged on bearing pin; Also be pivoted on the frame and one stir body, stir that the body pivot is vertical with bearing pin to be provided with, stir body and be provided with a slotted hole, bearing pin is arranged among the slotted hole; Bearing pin locates to be provided with symmetrically the screens of two projections near stirring the body bottom surface; Sheathed compression spring on the bearing pin, the lower end butt of compression spring is stirred body, the upper end butt feather key of compression spring; Stir body and have acute angle of downward bending away from an end of pivot; The two side faces of stirring body is respectively equipped with a projection, stirs body two sides framework lateral plate is set, and is equipped with two confessions on each framework lateral plate and stirs the groove that the body projection snaps in, be i.e. first groove and second groove; Stir body and have two ultimate limit states,, stir body and turn to extreme lower position,, stir body and turn to the extreme higher position when stirring the body projection when snapping in second groove when stirring the body projection when snapping in first groove; The bearing positioning step of vertical pivot lower end is plate-like, and the bearing positioning step of vertical pivot lower end and the cooresponding position of bearing pin are provided with a pilot hole, and pilot hole is provided with two and the cooresponding keyway of bearing pin feather key; The connector bottom surface is provided with a hole identical with the pilot hole diameter of bearing positioning step, and the sidewall in hole is provided with the identical keyway of keyway with the pilot hole of bearing positioning step; When car fork and lockout mechanism went to position to be locked, the hole of connector bottom surface and keyway overlapped with the hole of bearing positioning step and the vertical projection of keyway; Can bear the antifriction-bearing box of axial force in the described lower bearing hole, its axial height towards next end inner ring is higher than the outer ring.

The stroller wheel orienting device that the utility model relates to by an action of stirring body, is realized the insertion of bearing pin and is extracted, thereby realizes the orientation of wheel and remove directed.Stir the body person of being operated when upwards stirring, stir that body is logical to be made compression spring and upwards promote bearing pin, if this moment is car transmission angle to be locked, then the hole of connector bottom surface and keyway overlap with the hole of guide plate and the vertical projection of keyway, bearing pin can be pushed in the hole of connector, car fork (and the guide plate and lockout mechanism of captiveing joint with the car fork) same car body (car body is captiveed joint with connector) is locked together, and the car fork can not rotate, and realizes directed.Stir the body person of being operated when upwards stirring, stir that body is logical to be made compression spring and upwards promote bearing pin, this moment is not if the car fork points to the direction that requires locking, the hole of connector bottom surface and keyway do not overlap with the hole of guide plate and the vertical projection of keyway, that is to say that the hole do not aim at following hole, and then bearing pin withstands on the bottom surface of connector by the elastic force of compression spring, can rotate the car fork this moment with hand, to position to be locked, bearing pin then springs in the hole of connector automatically, realizes wheel alignment.When needing to remove wheel alignment, only need stir body downwards, stir body and rotate, the screens of two projections in pulling bearing pin side moves downward bearing pin, throws off with connector, removes the wheel orientation.Be respectively equipped with a projection because of stirring body two sides, the frame two side faces of lockout mechanism is respectively equipped with two grooves, is used for projection and snaps in, therefore, stir body and be in when lifting and depressing (just wheel is in directed and removes directed) state, all be in self-locking state, keep wheel directed reliable.The technical solution of the utility model, the contrast prior art, stroller wheel has orientating function, makes easy to use.

Description of drawings

Fig. 1 is first embodiment scheme drawing of the utility model.

Fig. 2 is the partial schematic diagram after first embodiment of the utility model cuts frame open.

Fig. 3 is first embodiment partial exploded view of the utility model.

Fig. 4 is first embodiment connector scheme drawing of the utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

First embodiment of the present utility model is the front-wheel that the stroller wheel orienting device is applied to a kind of three wheeled stroller.With reference to figure 1, Fig. 2, Fig. 3, Fig. 4, the stroller wheel orienting device comprises car body 101 and car fork 102, and car is pitched 102 lower ends and by axletree wheel 103 is set; Also comprise connector 104; Connector 104 has two bearing holes that are provided with one heart, and the axle center of bearing hole vertically is provided with; The lower end in head bearing hole has bearing axle to positioning step, and the upper end in lower bearing hole has bearing axle to positioning step; Connector 104 is captiveed joint with car body 101; Car body has a pipe fitting 1011, and pipe fitting 1011 constitutes with connector 104 and captives joint; One antifriction-bearing box is set in the head bearing hole, an antifriction-bearing box that can bear axial force is set in the lower bearing hole; Car is pitched 102 upper end captive joints, one vertical pivot 105, and vertical pivot 105 upper ends are by the nut 106 that is threaded, and the lower end of vertical pivot 105 has bearing positioning step 107; Described two bearing carrier rings are located at vertical pivot 105, two bearings between bearing positioning step and nut 106; The stroller wheel orienting device also comprises with car pitches 102 lockout mechanisms of captiveing joint 108, lockout mechanism 108 comprises a frame 1081, frame 1081 is provided with a vertical pilot hole 1082, the bearing pin 1083 that settings can move up and down along pilot hole in the pilot hole 1082, pilot hole 1082 is positioned at the lower end of bearing pin 1083, the upper end of bearing pin 1083 is provided with 1084, two feather keys 1084 of two feather keys and is symmetrical arranged on bearing pin 1083; Also be pivoted on the frame 1081 and one stir body 1085, stir body 1085 pivots and bearing pin 1083 vertical settings, stir body and be provided with a slotted hole 1086, bearing pin 1083 is arranged among the slotted hole 1086; Bearing pin 1083 locates to be provided with symmetrically the screens 1087 of two projections near stirring body 1085 bottom surfaces; Sheathed compression spring 1088 on the bearing pin 1083, the lower end butt of compression spring 1088 is stirred body 1085, the upper end butt feather key 1084 of compression spring 1088; Stir body 1085 and have acute angle of downward bending away from an end of pivot; The two side faces of stirring body 1085 is respectively equipped with a projection 1089, stirs body two sides framework lateral plate is set, and is equipped with two confessions on each framework lateral plate and stirs the groove that body projection 1089 snaps in, be i.e. first groove 10810 and second groove 10811; Stir body 1085 and have two ultimate limit states,, stir body and turn to extreme lower position,, stir body and turn to the extreme higher position when stirring body 1085 projections 1089 when snapping in second groove 10811 when stirring body 1085 projections 1089 when snapping in first groove 10810; Lockout mechanism 108 also comprises a guide plate 10812 of captiveing joint with frame 1081, guide plate 10812 flat frame 1081 tops of being located at, guide plate 10812 is provided with a pilot hole with bearing pin 1083 cooresponding positions, and pilot hole is provided with two and bearing pin 1083 feather keys 1084 cooresponding keyways; Connector 104 bottom surfaces are provided with a hole identical with the pilot hole diameter of guide plate 10812, and the sidewall in hole is provided with the identical keyway of keyway with the pilot hole of guide plate 10812; When car fork and lockout mechanism went to position to be locked, the hole of connector bottom surface and keyway overlapped with the hole of guide plate and the vertical projection of keyway.In the present embodiment, the screens 1087 of bearing pin 1083 is identical in bearing pin 1083 position radially with the feather key 1084 of bearing pin 1083, and two screens 1087 are arranged at two sides of stirring body 1085 slotted holes 1086 line of centerss respectively.Stirring body 1085 is that plastic material is made by the injection molded mode, and the projection 1089 of stirring the two side faces of body 1085 has certain elasticity, can produce elastic deformation.Bearing positioning step 107 in the present embodiment is that guide plate is in the form of annular discs, and when car fork 102 and lockout mechanism 108 went to wheel towards the dead ahead, the hole 1041 of connector 104 bottom surfaces and keyway overlapped with the hole of guide plate and the vertical projection of keyway.In the present embodiment, connector 104 has two parallel walls, i.e. upper wall and lower wall up and down; Upper wall is provided with a head bearing hole, and lower wall is provided with bearing hole, and the head bearing hole is provided with the lower bearing hole is concentric; The lower end in head bearing hole has bearing axle to positioning step, and the upper end in lower bearing hole has bearing axle to positioning step; Described connector is that sheet metal is converted into, and also has one section connecting wall between upper wall, the lower wall, and connecting wall is provided with upper wall and lower wall are vertical, and upper wall, lower wall, connecting wall have identical thickness; Upper wall is circular-arc away from an end of connecting wall, and lower wall also is same circular-arc away from an end of connecting wall; The diameter of described pipe fitting equals the distance between upper wall and the lower wall, and described pipe fitting 1011 has arc, and connector 104 is located in outside the pipe fitting, and the arc of pipe fitting 1011 overlaps with the circular arc of connector 104 upper and lower walls; Hole on connector 104 bottom surfaces is arranged on the through hole on the lower wall.Captive joint by welding manner between connector 104 and car body 101 pipe fittings 1011.Vertical pivot 105 is fixedly installed on the car fork 102 by welding manner.Lockout mechanism 108 is arranged on car by welding manner and pitches the place ahead, 102 top.Guide plate is discoid, is arranged between car fork 102 and the vertical pivot 105 with welding manner.

Second embodiment of the present utility model also is the front-wheel that a stroller wheel orienting device is applied to a kind of three wheeled stroller.Be with the difference of first embodiment of the utility model, can bear the antifriction-bearing box of axial force in the described lower bearing hole, its axial height towards next end inner ring is higher than the outer ring, another difference is that the vertical pivot lower end is not provided with the bearing positioning step, and bearing inner ring axially directly is connected on the guide plate.

The 3rd embodiment of the present utility model still is the front-wheel that a stroller wheel orienting device is applied to a kind of three wheeled stroller.Be that with the difference of first embodiment of the utility model two bearings all adopt the outer ring to have the bearing of positioning spigot, the head bearing hole and the lower bearing hole of connector all are not provided with the bearing positioning step, and bearing directly is positioned at the bearing hole entrance.

Claims

1. A baby stroller wheel orientation device, comprising a car body and a car fork, the lower end of the car fork is provided with a wheel through the axle; it also includes a connecting body; the connecting body has two concentrically arranged bearing holes, and the axis of the bearing hole is vertically arranged; The lower end of the upper bearing hole has a bearing axial positioning step, and the upper end of the lower bearing hole has a bearing axial positioning step; the connecting body is fixedly connected with the car body; the car body has a pipe fitting, and the pipe fitting and the connecting body form a fixed connection; A rolling bearing is arranged, and a rolling bearing capable of bearing axial force is arranged in the lower bearing hole; the upper end of the fork is fixedly connected to a vertical shaft, and the upper end of the vertical shaft is connected to a nut through threads, and the lower end of the vertical shaft has a bearing positioning step; the two bearings Sleeved on the vertical shaft, the second bearing is located between the bearing positioning step and the nut; it is characterized in that,

Also includes a locking mechanism fixedly connected with the fork, the locking mechanism includes a frame, the frame is provided with a vertical guide hole, a pin shaft that can move up and down along the guide hole is arranged in the guide hole, the guide hole is located at the lower end of the pin shaft, The upper end of the pin shaft is provided with two guide keys, and the two guide keys are arranged symmetrically on the pin shaft; hole, the pin shaft is set in the long hole; the pin shaft is symmetrically provided with two protrusions near the bottom surface of the pulling body; a compression spring is sleeved on the pin shaft, and the lower end of the compression spring touches the pulling body, compressing The upper end of the spring abuts against the guide key; the end of the pulling body away from the pivot has an acute angle bent downward; the two sides of the pulling body are respectively provided with a protrusion, and the two sides of the pulling body are provided with rack side plates, and each rack There are two grooves on the side plates for the protrusions of the pulling body to snap into, namely the first groove and the second groove; the pulling body has two limit states, when the protrusion of the pulling body is stuck into the first groove , the pulling body rotates to the lowest position, and when the protrusion of the pulling body snaps into the second groove, the pulling body rotates to the highest position; the locking mechanism also includes a guide plate fixedly connected with the frame, and the guide plate is placed on the On the top of the frame, a guide hole is provided at the position corresponding to the guide plate and the pin shaft, and two key grooves corresponding to the guide keys of the pin shaft are arranged on the guide hole;

The bottom surface of the connector is provided with a hole with the same diameter as the guide hole of the guide plate, and the side wall of the hole is provided with the same keyway as the keyway of the guide hole of the guide plate; when the fork and the locking mechanism are turned to the position to be locked, the bottom surface of the connector will The vertical projection of the hole and the keyway of the guide plate coincides with the hole of the guide plate and the keyway.

2. The stroller wheel orientation device according to claim 1, characterized in that the position of the pin shaft is the same as that of the guide key of the pin shaft in the radial direction of the pin shaft, and the two locking positions are respectively arranged in the long holes of the pulling body on either side of the centerline.

3. The baby carriage wheel alignment device according to claim 1, characterized in that, the pulling body is made of plastic material through injection molding.

4. The stroller wheel orientation device according to claim 1, wherein the wheel is a front wheel of a three-wheeled stroller, and the guide plate is disc-shaped, when the fork and the locking mechanism are turned to the direction of the wheel When it is directly ahead, the vertical projection of the hole and the keyway on the bottom surface of the connecting body coincides with the hole and the keyway of the guide plate.

5. The stroller wheel orientation device according to claim 1, wherein the connecting body has two parallel walls up and down, i.e. an upper wall and a lower wall; the upper wall is provided with an upper bearing hole, and the lower wall is provided with The lower bearing hole, the upper bearing hole and the lower bearing hole are set concentrically; the lower end of the upper bearing hole has a bearing axial positioning step, and the upper end of the lower bearing hole has a bearing axial positioning step; the connecting body is folded from a metal plate, and the upper There is also a connecting wall between the wall and the lower wall. The connecting wall is vertically arranged with the upper wall and the lower wall. The upper wall, the lower wall and the connecting wall have the same thickness; the end of the upper wall away from the connecting wall is arc-shaped, and the lower wall The end away from the connecting wall is also in the same arc shape; the diameter of the pipe fitting is equal to the distance between the upper wall and the lower wall, the pipe fitting has an arc shape, and the connecting body is sandwiched outside the pipe fitting, and the arc shape of the pipe fitting is connected to the connecting wall. The circular arcs of the upper and lower walls of the body coincide; the holes on the bottom surface of the connecting body are through holes arranged on the lower wall.

6 . The baby stroller wheel orientation device according to claim 1 , wherein the connecting body and the body pipe are fixedly connected by welding; the vertical shaft is fixedly arranged on the fork by welding. 7 .

7. The wheel alignment device for baby stroller according to claim 1, wherein the locking mechanism is arranged in front of the upper part of the fork by welding.

8 . The wheel alignment device for baby stroller according to claim 1 , wherein the guide plate is disc-shaped and is welded between the fork and the vertical shaft.

9. A baby stroller wheel orientation device, comprising a car body and a fork, the lower end of the fork is provided with a wheel through the axle; it also includes a connecting body; the connecting body has two concentrically arranged bearing holes, and the axis of the bearing hole is vertically arranged; The connecting body is fixedly connected with the car body; the car body has a pipe fitting, and the pipe fitting and the connecting body form a fixed connection; a rolling bearing is arranged in the upper bearing hole, and a rolling bearing capable of bearing axial force is arranged in the lower bearing hole; the upper end of the fork is fixedly connected with a Vertical shaft, the upper end of the vertical shaft is threaded to a nut, and the lower end of the vertical shaft has a bearing positioning step; the two bearings are sleeved on the vertical shaft, and the two bearings are located between the bearing positioning step and the nut; it is characterized in that,

The bottom surface of the connector is provided with a hole with the same diameter as the guide hole of the guide plate, and the side wall of the hole is provided with the same keyway as the keyway of the guide hole of the guide plate; when the fork and the locking mechanism are turned to the position to be locked, the bottom surface of the connector will The vertical projection of the hole and keyway of the guide plate coincides with the hole and keyway of the guide plate;

The two bearings described above are bearings with stop steps on the outer ring.

10. A baby stroller wheel orientation device, comprising a car body and a fork, the lower end of the fork is provided with a wheel through the axle; it also includes a connecting body; the connecting body has two concentrically arranged bearing holes, and the axis of the bearing hole is vertically arranged; The lower end of the upper bearing hole has a bearing axial positioning step, and the upper end of the lower bearing hole has a bearing axial positioning step; the connecting body is fixedly connected with the car body; the car body has a pipe fitting, and the pipe fitting and the connecting body form a fixed connection; A rolling bearing is provided, and a rolling bearing capable of bearing axial force is provided in the lower bearing hole; the upper end of the fork is fixedly connected to a vertical shaft, and the upper end of the vertical shaft is connected to a nut through threads, and the lower end of the vertical shaft has a bearing positioning step (delete this sentence); The two bearings are sleeved on the vertical shaft, and the two bearings are located between the bearing positioning step and the nut; it is characterized in that,

Also includes a locking mechanism fixedly connected with the fork, the locking mechanism includes a frame, the frame is provided with a vertical guide hole, a pin shaft that can move up and down along the guide hole is arranged in the guide hole, the guide hole is located at the lower end of the pin shaft, The upper end of the pin shaft is provided with two guide keys, and the two guide keys are arranged symmetrically on the pin shaft; hole, the pin shaft is set in the long hole; the pin shaft is symmetrically provided with two protrusions near the bottom surface of the pulling body; a compression spring is sleeved on the pin shaft, and the lower end of the compression spring touches the pulling body, compressing The upper end of the spring abuts against the guide key; the end of the pulling body away from the pivot has an acute angle bent downward; the two sides of the pulling body are respectively provided with a protrusion, and the two sides of the pulling body are provided with rack side plates, and each rack There are two grooves on the side plates for the protrusions of the pulling body to snap into, namely the first groove and the second groove; the pulling body has two limit states, when the protrusion of the pulling body is stuck into the first groove , the pulling body rotates to the lowest position, and when the protrusion of the pulling body snaps into the second groove, the pulling body rotates to the highest position; the bearing positioning step at the lower end of the vertical shaft is disc-shaped, and the bearing positioning step at the lower end of the vertical shaft is in line with the A guide hole is provided at the position corresponding to the pin shaft, and two key grooves corresponding to the guide keys of the pin shaft are provided on the guide hole;

The bottom surface of the connecting body is provided with a hole with the same diameter as the guide hole of the bearing positioning step, and the side wall of the hole is provided with the same keyway as the keyway of the guide hole of the bearing positioning step; when the fork and the locking mechanism are turned to the position to be locked, the connection The vertical projection of the hole and keyway on the bottom surface of the body coincides with the vertical projection of the hole and keyway on the bearing positioning step;

For the rolling bearing in the lower bearing hole that can bear axial force, the axial height of the inner ring at the downward end is higher than that of the outer ring.