CN2658047Y

CN2658047Y - Improved wheel driving structure

Info

Publication number: CN2658047Y
Application number: CNU032065663U
Authority: CN
Inventors: 陈俊丞; 王启华
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-07-28
Filing date: 2003-07-28
Publication date: 2004-11-24
Anticipated expiration: 2013-07-28

Abstract

The utility model offers an improved wheel driving structure, including a collar rim, a winch, a driving wheel, a ratchet piece, a spacing piece and a stator. Wherein, several detents arranged on the driving wheel are driven by the stop wall which is arranged at a flume of the ratchet piece; at the same time, the driving wheel can idling while the stop wheel and the detents are pressed, therefore the operator still can put two feet on the footplates while the operator does not pedal the bicycle so as to improve the stability and the security of operation.

Description

A kind of improved wheel drive mechanism

Technical field

The utility model relates to a kind of improved wheel drive mechanism, especially censures the pushchair structure that has unidirectional transmission agency between a kind of crank and the wheel rim.

Background technology

Present known technology, as shown in Figures 1 and 2, they are respectively known carriage for children front vehicle wheel exploded perspective view and combination back cutaway view, it mainly is to be provided with a tire 13 in a wheel rim 11 housings, and in the axis hole 15 that these wheel rim 11 central authorities have, be provided with the clamping block 17 of trisection, this each clamping block 17 has all provided screw 19, make each two sides, three bolt 21 wear a driver blade 23 in advance, make each two sides, three bolt 21 again, join with screw 19 spiral shells, because wherein a driver blade 23 center hub partly combine with a crank 25 with welding manner, to reach the effect of certain transmission: only this kind front vehicle wheel is when using, the operator takes normal both feet and respectively tramples stretcher 27 and can allow wheel be rotated further, if after running into descending or trampling fast, and when having acceleration due to gravity to advance situation, usually because running speed is very fast, and make the speed of wheel that operator's both feet speed of trampling can't be caught up with, force operator's both feet to put and leave stretcher 27, so, the action that both feet are held high, easily make health can't keep balance, with and the danger of the various bursts that produced, also cause the operator in operational inconvenience.

Novel content

Main purpose of the present utility model is to solve the problem of above-mentioned known carriage for children front vehicle wheel structure and a kind of improved wheel drive mechanism is provided, by by the ratchet sheet that is provided with in the wheel rim be located at power wheel on the crank, transfer motion power when being subjected to ratchet that barrier stops in the ratchet sheet institute tool skewed slot, and when ratchet is pushed idle running, still both feet can be placed on the stretcher when not continuing to trample for the operator, stability when operating to increase, and improve safety.

The purpose of this utility model realizes that by following technical proposals improved wheel drive mechanism of the present utility model includes:

One wheel rim, the outside are in conjunction with a tire, and this wheel rim center has an axis hole that axially runs through, and this shaft hole inner wall has the clamping block of most equal distribution, and this each clamping block has an axial perforation respectively;

One crank has wholeheartedly axial region being arranged in the wheel rim axis hole, and this axle portion two is auspicious to have one respectively and separate the connecting rods that extend, and the end of this two connecting rod extends the stampeding section of public axle portion axially parallel again respectively;

In conjunction with an axial power wheel, this power wheel periphery has slot part, and is provided with stria portion in this slot part periphery on other this crank axle portion middle section position, and the slot part periphery is provided with the axial arc recess of predetermined number equal distribution;

The predetermined number ratchet, end face is provided with stria portion, two ends have curved portions and top respectively, this predetermined number ratchet bottom surface and curved portions thereof be able to be coincide and be positioned at arc recess on the power wheel slot part periphery, be placed in a flexible steel ring in the stria portion of power wheel slot part and predetermined number ratchet, each ratchet is mounted in the power wheel slot part, and has arc to spring function;

One ratchet sheet, be to be located in the axis hole of wheel rim, clamping block corresponding to the most equal distribution of wheel rim shaft hole inner wall, being provided with draw-in groove in these ratchet sheet outer peripheral edges engages mutually with clamping block, this ratchet sheet center has a through hole and passes for this crank axle portion, this ratchet sheet through hole inner peripheral is provided with most equal distribution and in the gradually dark skewed slot of a side, and forms barrier in the innermost periphery;

Two banking stops are two sides of being located at power wheel and ratchet sheet respectively, and this two banking stop is by fixing respectively by C shape clasp;

Two fixed plates, be to be located at wheel rim axis hole two ends respectively, this two fixed plate has a pivot hole respectively, this pivot hole is to use for crank axle portion to pass, this two fixed plate passes the clamping block perforation with bolt respectively and fixes, in addition this two fixing moon pivot hole peripheral respectively and have the outside groove of depression, this groove is to hold a bearing person who is incorporated in the crank axle portion.

Description of drawings

Fig. 1 is known carriage for children front vehicle wheel exploded perspective view;

Fig. 2 is a known carriage for children front vehicle wheel combination back cutaway view;

Fig. 3 is the utility model preferred embodiment exploded perspective scheme drawing;

Fig. 4 is that the good specific embodiment of the utility model makes up horizontal cross-sectional schematic;

Fig. 5 is the utility model preferred embodiment power wheel and ratchet schematic perspective view.

Figure number is with reference to explanation

Known part

11 wheel rims, 13 tires, 15 axis holes, 17 clamping blocks, 19 bolts

21 bolts, 23 driver blades, 25 cranks, 27 stretchers

The utility model

10 wheel rims, 12 cranks, 14 power wheels, 16 ratchets, 18 ratchet sheets, 20 banking stops

22 fixed plates, 24 axis holes, 26 clamping blocks, 28 perforation, 30 axle portions, 32 connecting rods 34 are stepped on

Step on 36 groove Shaos, 38 stria portions of portion, 40 arc recess, 42 strias and close 44 curved portions, 46 tops

48 flexible steel rings, 50 draw-in grooves, 52 through holes, 54 skewed slots, 56 barrier 58C shape clasps

60 pivot holes, 62 bolts, 64 grooves, 66 bearings, 68 blocks

The specific embodiment

Further structure of the utility model and purpose are elaborated in hereinafter lifting a preferred embodiment and conjunction with figs. now, and making it to be familiar with this type of technology personage can understand fully.

As shown in Figures 3 and 4, they are respectively the utility model one preferred embodiment exploded perspective scheme drawing and make up horizontal cross-sectional schematic, wherein:

One wheel rim 10, housing are in conjunction with a tire (not shown), and these wheel rim 10 central authorities have the axis hole 24 that axially runs through, and these axis hole 24 inwalls have the clamping block 26 of three equal distribution, and this each clamping block 26 has homoaxial perforation 28 respectively;

One crank 12 has wholeheartedly axial region 30 to be arranged in wheel rim 10 axis holes 24, and these axle portion 30 2 ends have a connecting rod 32 that extends respectively, and these two connecting rods, 32 ends extend the stampeding section 34 with axle portion 30 axially parallels again respectively;

In addition on these crank 12 axle portions 30 middle section positions in conjunction with a coaxial power wheel 14, as shown in Figure 3, these power wheel 14 peripheries have slot part 36, and be provided with stria portion 38) in these slot part 36 peripheries, and these slot part 36 peripheries are provided with the homoaxial arc recess 40 of two equal distribution, and between this two arc recess 40, be provided with block 68 in stria portion 38;

And for example shown in Figure 5, two ratchets 16, end face is provided with stria portion 42 2 ends and has curved portions 44 and top 46 respectively, these two ratchets, 16 bottom surfaces and curved portions 44 thereof be able to be coincide and be positioned at arc recess 40 on power wheel 14 slot parts 36 peripheries, be placed in the stria portion 38 of power wheel 14 slot parts 36 and two ratchets 16 with a flexible steel ring 48, in 42, this two ratchet 16 is mounted in power wheel 14 slot parts 36, and this two ratchet 16 is subjected to the elasticity of flexible steel ring 48, make two ratchets 16 have arc to spring function, the block 68 in the power wheel 14 slot parts 36 stria portions 38 wherein, can stop Elastic Steel Figure 48 to be placed in the radial displacement of stria portion 38, avoid two ratchets 16 to come off;

One ratchet sheet 18, be to be located in the axis hole 24 of wheel rim 10, clamping block 26 corresponding to wheel rim 10 axis holes 24 inwalls three equal distribution, being provided with three draw-in grooves 50 in these ratchet sheet 18 outer peripheral edges engages mutually with clamping block 26, these ratchet sheet 18 centers have a through hole 52 and pass for crank 12 axle portions 30, these ratchet sheet 18 through holes 52 inner peripherals are provided with most equal distribution and in the gradually dark skewed slot 54 of a side, this majority skewed slot 54 just can snap in for ratchet 16 tops 46, and forms barrier 56 in the innermost periphery;

Two banking stops 20 are two sides of being located at power wheel 14 and ratchet sheet 18 respectively, and this two banking stop 20 is by fixing respectively by C shape clasp 58;

Two fixed plates 22, be to be located at wheel rim 10 axis holes 24 2 ends respectively, this two fixed plate 22 has a pivot hole 60 respectively, this pivot hole 60 is to use for crank 12 axle portions 30 to pass, this two fixed plate 22 passes clamping block 26 perforation 28 with three bolts 62 respectively and fixes, in addition these two fixed plates, 22 pivot holes, 60 peripheries respectively and have the outside groove 64 of depression, this groove 64 is to hold a bearing 66 that is incorporated in the crank 12 axle portions 30;

The utility model one preferred embodiment is when using, it is identical when the operator uses with general perambulator, trample crank 12 stampeding sections 34, this moment have this moment arc to elastic pawl 16 tops 46 to ratchet sheet 18 skewed slots 54 pushing tows, and can stretch in the skewed slot 54, and the inclination of suitable work skewed slot 54 slides to bottom land, and be blocked wall 56 and stop that this ratchet 16 promptly can promote whole ratchet sheet 18) because this ratchet sheet 18 is to fix with wheel rim 10 axis holes 24, therefore, this wheel rim 10 can be driven simultaneously and be rotated; In addition, the speed of trampling in use is slow or stop, and this wheel rim 10 rotates very fast or when continuing to rotate, 18 of this ratchet sheets with skewed slot 54 with ratchet 16 to pressing down, and this power wheel 14 is not rotated with work ratchet sheet 18, therefore, this crank 12 can together not rotate with this wheel rim 10 when not transmission, still both feet can be placed on the stretcher when not continuing to trample with operator foot, stability when operating to increase, and improve safety.

Though, lifted a preferred embodiment and cooperated with regard to the utility model already in the above-mentioned explanation and illustrated, obviously, be familiar with the related art techniques personage and can be engaged in regard to this embodiment and revise and can not run counter to principle of the present utility model, in the claim of scope of the present utility model through being defined in the application and asking.

Claims

1, a kind of improved wheel drive mechanism, it includes:

It is characterized in that this wheel drive mechanism also comprises:

Two fixed plates, be to be located at wheel rim axis hole two ends respectively, this two fixed plate has a pivot hole respectively, this pivot hole is to use for crank axle portion to pass, this two fixed plate passes the clamping block perforation with bolt respectively and fixes, in addition this two fixing moon pivot hole peripheral respectively and have the outside groove of depression, this groove is to hold a bearing that is incorporated in the crank axle portion.

2, according to the described improved wheel drive mechanism of claim 1, it is characterized in that portion is provided with block at stria between wantonly two arc recess of described slot part, can stop flexible steel ring to be placed in the radial displacement of stria portion, avoid ratchet to come off.