CN208931406U - A kind of perambulator and its wheel gear shifting structure with more gears - Google Patents

Abstract

The utility model discloses a kind of perambulator and its with the wheel gear shifting structure of more gears, wherein wheel include shift control assembly, and along axletree first axial direction set gradually brake member, gear switching wheel, fifth wheel；Fifth wheel and axletree are rotatablely connected, and are connect with wheel drive；Brake member is socketed on axletree and can move along axletree axial direction, and gear switching wheel connects external power generator, and engages with fifth wheel；The brake tooth for engaging fifth wheel is provided on brake member；When braking tooth and gear switching wheel while engaging with fifth wheel, brake member plays the role of braking to fifth wheel；After brake member is moved along the second axial direction of axletree to be disconnected wheel, and the tooth that brakes is not taken turns with gear switching when contacting, and fifth wheel drives gear switching wheel to rotate synchronously, so that outside power generator connected to it be driven to generate electricity.After brake member, which axially continues to move to gearing gear switching wheel along second, is disconnected wheel, fifth wheel idle running.

Description

A kind of perambulator and its wheel gear shifting structure with more gears

Technical field

This application involves perambulator technical fields, and in particular to the wheel gear shifting structure of a kind of perambulator and its more gears.

Background technique

The purpose of existing perambulator is in order to improve it using the safety of traveling or in order to pacify child, on perambulator Several equipment, such as light fixture, luminescence component, musical toy or whirligig etc. would generally be equipped with, to meet user's Different demands, and these equipment are usually the electric energy presentation mode operated using electric energy, and common at present, mainly in equipment The replaceable battery of upper setting.

But for this kind of equipment when using battery, dosage is very big, not only increases the consumer cost of user, and since battery is used It need to be abandoned after complete, cause unnecessary waste, invisible also constitutes great threat to environment；Furthermore in the electricity of battery When power exhausts fastly, the running of these equipment often will affect, be unable to reach the effect that safety guarantee is provided or pacifies child, or even make User no longer updates battery because the cost of replacement battery is excessively high, keeps equipment lack scope for their abilities, causes another waste.

Existing perambulator usually only brake function, that is, wheel gear only brake shelves and neutral gear cannot achieve function Extension.

Therefore, the prior art has much room for improvement and improves.

Utility model content

The application is intended to provide a kind of perambulator and its wheel gear shifting structure with more gears, expansible by multi gear position Generating function.

According to a first aspect of the present application, this application provides a kind of wheel gear shifting structures with more gears, comprising: changes Keep off control assembly, and along axletree 12 first axial direction set gradually brake member 6, gear switching wheel 7, fifth wheel 4； The fifth wheel 4 is rotatablely connected with axletree 12, and is connect with wheel drive；The brake member 6 can be along 12 axial direction side of axletree To mobile setting on axletree 12, it is provided at least one on the brake member 6 and protrudes from the circumferential brake tooth of brake member 6 61, the brake tooth 61 is for engaging fifth wheel 4；The shift control assembly is for driving brake part 6 along the of axletree 12 Two axial directions are mobile；The gear switching wheel 7 is sequentially connected with external power generator；The gear switching wheel 7 is in first It is engaged after initial position with fifth wheel 4；After the brake member 6 is in the second initial position, brake tooth 61 engaged with fifth wheel 4 with Fifth wheel 4 is braked；Shift control assembly driving brake part 6 is moved to power generation position along the second axial direction of axletree 12 Afterwards, brake tooth 61 and fifth wheel 4 are detached from, and fifth wheel 4 is by driving 7 rotation of gear switching wheel that power generator is made to generate electricity.

The wheel gear shifting structure with more gears, wherein the gear switching wheel 7 is arranged on axletree 12 simultaneously It can be moved along 12 axial direction of axletree；Shift control assembly driving brake part 6 is moved from power generation position along the second axial direction To after neutral gear position, 6 synchronous drive gear of brake member switching wheel 7 be moved to fifth wheel be detached from position, make gear switching wheel 7 with connect Wheel 4 is detached from.

The wheel gear shifting structure with more gears, wherein the side of gear switching wheel 7 be provided with for The gear ring that fifth wheel 4 engages, the other side of gear switching wheel 7 be equipped with protrude inwardly from gear switching wheel 7 it is circumferential the One protruding portion；Brake member 6 is contacted with the first protruding portion to drive gear switching wheel 7 mobile.

The wheel gear shifting structure with more gears, wherein further include: it covers on gear switching wheel 7, and and gear The synchronizing wheel 5 that switching wheel 7 rotates coaxially；The other side of gear switching wheel 7 also on be provided with to protrude outward and switch in gear 7 at least one circumferential second protruding portion 71 are taken turns, are provided at least one accommodating cavity 51 in the synchronizing wheel 5；The accommodating cavity 51 move between the first initial position and fifth wheel disengaging position for accommodating second protruding portion 71, and it is prominent to limit second Portion 71 circumferentially rotates；Gear switching wheel 7 is sequentially connected by synchronizing wheel 5 and external power generator.

The wheel gear shifting structure with more gears, wherein the shift control assembly includes: pull handle 1, pull handle peace Fill seat 11 and bracing wire 3；The pull handle 1 is sequentially connected by bracing wire 3 and brake member 6；The pull handle 1 is spindle rotationally arranged in described In pull handle mounting base 11, the pull handle 1, to drive bracing wire 3, makes brake member 6 in the second initial position, power generation position by rotation Switch between neutral gear position.

The wheel gear shifting structure with more gears, wherein further include: for gear switching wheel 7 to be reset to the At least one first return springs 8 on one initial position and for resetting to brake member 6 on second initial position Two return springs 9；The shift control assembly includes brake switch 2, and the brake switch 2 is used for while triggering first resets Elastic component 8 is resetted to gear switching wheel 7 and the second return springs 9 reset brake member 6.

The wheel gear shifting structure with more gears, wherein first return springs 8 are arranged in accommodating cavity 51 Interior, one end of which is fixed in 51 cavity wall of accommodating cavity, the other end is fixed on the end face of 7 other sides of gear switching wheel.

The wheel gear shifting structure with more gears, wherein further include brake fixing seat 10, brake fixing seat 10 is solid It is scheduled on axletree 12, for the axial movement guiding for brake member 6；Multiple lead is provided on one end face of the brake member 6 To arm 62, the end of the leading arm 62 is arranged in the brake tooth 61, and protrudes from the circumferential direction of the brake member 6；The brake The multiple guide grooves 101 matched with the leading arm 62 are provided in vehicle fixing seat 10, the leading arm 62 passes through guide groove 101 are socketed in the brake member 6 on the brake fixing seat 10；The other end of the brake member 6 and the second Flexible Reset Part 9 contacts.

The wheel gear shifting structure with more gears, wherein the fifth wheel 4 passes through bearing 13 and 12 turns of axletree Dynamic to connect, radially ecto-entad is disposed with the first gear ring and the second gear ring on an end face of the fifth wheel 4；Institute The first gear ring is stated for engaging with gear switching wheel 7, second gear ring with the brake tooth 61 for engaging.

According to a second aspect of the present application, present invention also provides a kind of perambulator, including power generator, rear-wheel and described The wheel gear shifting structure with more gears；The rear-wheel is fixed on fifth wheel 4.

The beneficial effects of the utility model are:

Perambulator provided by the present application and its wheel gear shifting structure with more gears, the wheel of more gears are shifted gears knot Structure includes shift control assembly, and the first axial direction brake member, brake fixing seat, the gear that set gradually along axletree Switching wheel, fifth wheel；Fifth wheel and axletree are rotatablely connected, and are connect with wheel drive；Brake fixing seat is fixed on axletree On, brake member is fixed in circumferential direction, and brake member is socketed on axletree and can move along axletree axial direction, and gear is cut It changes wheel and connects external power generator, and engaged with fifth wheel；The brake tooth for engaging fifth wheel is provided on brake member；Work as brake When skiving and gear switching wheel are engaged with fifth wheel simultaneously, brake member plays the role of braking to fifth wheel；When brake member is along vehicle After the second axial direction movement of wheel shaft is to be disconnected wheel, and the tooth that brakes is not taken turns with gear switching when contacting, and fifth wheel drives Gear switching wheel rotates synchronously, so that external power generator connected to it be driven to generate electricity.When brake member is along the second of axletree Axial direction continue to move to interlock gear switching wheel be disconnected wheel after, fifth wheel idle running.It can be seen that the wheel shift knot Structure can switch between power generation shelves and brake shelves and neutral gear, and perambulator is made to realize generating function.

Detailed description of the invention

Fig. 1 is the axonometric drawing of the wheel gear shifting structure provided by the utility model with more gears；

Fig. 2 is the explosive view of Fig. 1；

Fig. 3 is the axonometric drawing of shift assembly in the wheel gear shifting structure provided by the utility model with more gears；

Fig. 4 is the explosive view of Fig. 3；

Fig. 5 is the right view of Fig. 3；

Fig. 6 is the right view of Fig. 1；

Fig. 7 is the sectional view along A-A of Fig. 6；

When Fig. 8 is that brake member is in the second initial position, the partial enlargement diagram of a in Fig. 7；

When Fig. 9 is that brake member is in power generation position, the partial enlargement diagram of a in Fig. 7；

When Figure 10 is that brake member is in neutral gear position, the partial enlargement diagram of a in Fig. 7；

Figure 11 is the axonometric drawing of perambulator provided by the utility model.

Specific embodiment

The application is described in further detail below by specific embodiment combination attached drawing.

Wheel gear shifting structure provided by the utility model with more gears, in perambulator, may act on front-wheel or Rear-wheel, as depicted in figs. 1 and 2, the present embodiment are illustrated by taking the rear-wheel for perambulator as an example, and there are two rear-wheel settings, point Not Wei left rear wheel and off hind wheel, left rear wheel is identical with the structure of off hind wheel, inside be provided with transmission shaft 12, two transmission shafts 12 are connected by connector 14.Certainly, in other embodiments, left rear wheel and the same transmission shaft 12 of off hind wheel can be connected It connects or rear-wheel is an one-wheel type structure.In the present embodiment, the symmetrical configuration of left rear wheel and off hind wheel, here, with off hind wheel It is illustrated for structure.

Join together as shown in figure 3 and figure 4, the wheel gear shifting structure provided by the present embodiment with more gears includes: to change Control assembly is kept off, and is cut along the first axial direction brake member 6, brake fixing seat 10, the gear that set gradually of axletree 12 Change wheel 7, fifth wheel 4.There are two the axial directions of axletree 12, and one is first axial direction, such as Fig. 2 solid arrow institute Show, the other is second axial direction opposite with first axial direction.Brake member 6 can be arranged in axial sliding along axletree 12 On brake fixing seat 10, brake fixing seat 10 is fixed on axletree 12, and brake member 6 and brake fixing seat 10 have coaxially Hole, axletree 12 passes through coaxial hole so that brake member 6 and brake fixing seat 10 to be co-located on axletree 12, also, stops Vehicle fixing seat 10 is fixed on axletree 12, and brake member 6 can be moved along the axial direction of axletree 12.Fifth wheel 4 is logical It crosses bearing 13 and axletree 12 is rotatablely connected, gear switching wheel 7 is arranged between fifth wheel 4 and brake fixing seat 10, and can edge The axial direction of axletree 12 is mobile, i.e., gear switching wheel 7 can move between brake fixing seat 10 and fifth wheel 4.

In the present embodiment, brake fixing seat 10 can limit brake member 6 in the rotation of circumferential direction.Wheel (does not show in figure It is sleeved and fixed on fifth wheel 4 out), wheel drives fifth wheel 4 to rotate, and can be realized the braking of fifth wheel 4 to wheel brake.? The axial end portion of brake member 6 is provided at least one and protrudes from the circumferential brake tooth 61 of brake member 6, when brake member 6 is along axletree After 12 first axial direction moves a certain distance, brake member 6 drives brake tooth 61 to engage with fifth wheel 4, to limit fifth wheel 4 Rotation.Shift control assembly can be moved with driving brake part 6 along the second axial direction of axletree 12, so that brake member 6 is de- From fifth wheel 4, so that fifth wheel 4 be allow to rotate.Gear switching wheel 7 is sequentially connected with external power generator, when gear switches Wheel 7 engages after the first initial position with fifth wheel 4, and after brake member 6 is in the second initial position (normal danger), brake tooth 61 engage with fifth wheel 4 to brake to fifth wheel 4, at this point, brake tooth 61 and gear switching wheel 7 are engaged with fifth wheel 4 simultaneously, from And brake and tooth 61 while limiting gear switching wheel 7 and the rotation in circumferential direction of fifth wheel 4, so that wheel is in brake shape State；When shift control assembly driving brake part 6 moves a certain distance (power generation position) along the second axial direction of axletree 12 again Afterwards, brake tooth 61 is disconnected wheel 4, but does not contact with gear switching wheel 7, at this point, only gear switching wheel 7 and fifth wheel 4 are nibbled It closes, by 4 synchronous drive gear of fifth wheel switching wheel, 7 rotation, and then drives the external power generator connecting with gear switching wheel 7 Power generation, makes wheel be in generating state.When shift control assembly driving brake part 6 is moved from power generation position along the second axial direction again After moving certain distance (neutral gear position), protrudes from circumferential 61 synchronous drive gear of the brake tooth switching wheel 7 of brake member 6 and be moved to Fifth wheel is detached from position, i.e. gear switching wheel 7 is detached from fifth wheel 4, so that wheel be made to be in neutral position state.

Specifically, being provided with multiple leading arms 62 on an end face of brake member 6, the end of leading arm 62 is arranged in brake tooth 61 Portion, and protrude from the circumferential direction of brake member 6, that is, protrude from the circumferential setting of leading arm 62；Be provided on brake fixing seat 10 with Multiple guide grooves 101 that leading arm 62 matches, leading arm 62 pass through guide groove 101 and brake member 6 are socketed in brake fixing seat On 10, so that brake member 6 is slidably disposed on brake fixing seat 10.Gear switching wheel 7 side be provided with for The gear ring that fifth wheel 4 engages, gear, which switches, is provided with 7 circumferential directions are taken turns in the switching of inwardly projecting and gear first on the other side for take turns 7 Protruding portion (not shown)；When brake member 6 is in neutral gear position, protrudes from the circumferential brake tooth 6 of brake member 6 and first and dash forward Portion's contact is out to drive gear switching wheel 7 to move along the second axial direction of axletree 12, to make 7 company of disengaging of gear switching wheel Cock wheel.Radially ecto-entad is disposed with the first gear ring and the second gear ring (in figure not on an end face of fifth wheel 4 Show), the first gear ring is used to engage with gear switching wheel 7, and the second gear ring is used to engage with brake tooth 61.

In the present embodiment, fifth wheel 4 can be indirectly solid by the fixing piece 41 and axletree 12 for fixing it of setting Fixed connection, fixing piece 41 are fixed on axletree 12 by way of being clamped or being spirally connected, in this way, convenient for the disassembly to fifth wheel 4, To be conducive to the maintenance to wheel.A washer 42, the setting of the washer 42 are additionally provided between fifth wheel 4 and fixing piece 41 The entrance of dust etc. can be prevented to sealing is played the role of inside fifth wheel 4.Brake member 6 comes along 12 axial direction of axletree It returns and moves back and forth a certain distance, therefore, limit wire hole can be set on brake member 6, limit in wire hole and be screwed into limited screw, Limiting slot with limited screw cooperation is set on axletree 12, by the cooperation of limited screw and limiting slot, so as to limit The distance that brake member 6 processed moves on axletree 12.Certainly, in other embodiments, the setting of limited screw and limiting slot The circumferential rotation of brake member 6 can be limited, in this way, brake fixing seat 10 can be not provided with.In present embodiment, the of axletree 12 One axial direction and the second axial direction are opposite directions, and first axial direction refers to the axial direction along wheel to lateral wheel Direction, the second axial direction refers to direction of the axial direction along wheel to the inside of wheel.

Further, in the wheel gear shifting structure provided by the present embodiment with more gears, on gear switching wheel 7 also It is socketed with the synchronizing wheel 5 rotated coaxially with gear switching wheel 7, is provided at least one accommodating cavity 51 in synchronizing wheel 5；Gear switching It is additionally provided with and is protruded outward at least one circumferential second protruding portion 71 of gear switching wheel 7, accommodating cavity 51 on the other side of wheel 7 It moves, and limits the first protruding portion 71 weeks between the first initial position and fifth wheel disengaging position for accommodating the first protruding portion 71 To rotation, gear switching wheel 7 is sequentially connected by synchronizing wheel 5 and external power generator, i.e., gear switching wheel 7 is in the same of rotation When, it is rotated by 71 synchronous drive synchronizing wheel 5 of the second protruding portion, and then drive the external power generator hair connecting with synchronizing wheel 5 Electricity.

As shown in connection with fig. 4, in the wheel gear shifting structure provided by the present embodiment with more gears, control assembly packet of shifting gears It includes: pull handle 1, pull handle mounting base 11 and bracing wire 3；Pull handle 1 is spindle rotationally arranged in pull handle mounting base 11, and pull handle 1 passes through bracing wire 3 It is sequentially connected with brake member 6；It is mobile that pull handle 1 drives bracing wire 3 by rotation, so that brake member 6 be made (to stop in the second initial position Truck position), power generation position and neutral gear position between switch；Second initial position (normal danger), power generation position and neutral gear position It successively arranges along the second axial direction.

Further, with the wheel gear shifting structure of more gears provided by the present embodiment further include: for cutting gear It changes wheel 7 and resets at least one first return springs 8 on the first initial position and for resetting to brake member 6 at the beginning of second The second return springs 9 on beginning position；Control assembly of shifting gears further includes brake switch 2, and pull handle 1 is arranged in brake switch 2 It on axial end face, while further including the brake switch return springs 21 for resetting brake switch, when pressing brake switch 2 Afterwards, brake switch 2 triggers the first return springs 8 to 7 reset of gear switching wheel and 9 pairs of the second return springs brakes of triggering simultaneously Vehicle part 6 resets, and after having resetted, brake switch 2 resets under the action of brake switch position of bone elastic component 21.First return springs 8 are arranged in accommodating cavity 51, and one end of which is fixed in 51 cavity wall of accommodating cavity, the other end is fixed on 7 other sides of gear switching wheel On end face.The other end of brake member 6 is contacted with the second return springs 9, the other end and connector of the second return springs 9 14 contacts.In the present embodiment, the quantity of the first return springs 8, the second protruding portion 71 and accommodating cavity 51 is equal.

Referring to shown in Fig. 5-Figure 10, specific work process is as follows:

In conjunction with shown in Fig. 5 and Fig. 8, when brake member 6 is in the second initial position, i.e., when pull handle 1 is in location A, gear is cut When changing wheel 7 in the first initial position, the gear ring being arranged on gear switching wheel 7 and the first gear ring being arranged on fifth wheel 4 Engagement；The brake tooth 61 being arranged on brake member 6 is engaged with the second gear ring being arranged on fifth wheel 4, since brake member 6 is in axis To on direction not can be rotated, therefore, brake member 6 simultaneously limit gear switching wheel 7 and fifth wheel 4 circumferential direction rotation, Wheel is set to be in braking state.

In conjunction with shown in Fig. 5 and Fig. 9, when brake member 6 is in power generation position, i.e., when pull handle 1 is in B location, 61 edge of tooth of braking The mobile a certain distance of second axial direction of axletree 12 is disconnected wheel 4, but does not contact with gear switching wheel 7, with brake Second return springs 9 of 6 other end of part contact are also moved along the second axial direction of axletree 12 therewith, store elastic potential Energy.At this point, the first gear ring being only arranged on fifth wheel 4 and the gear ring engagement being arranged on gear switching wheel 7, fifth wheel 4 7 rotation of wheel can be switched with synchronous drive gear, so that the external power generator connecting with gear switching wheel 7 be driven to rotate, make vehicle Wheel is in generating state.

In conjunction with shown in Fig. 5 and Figure 10, when brake member 6 is in neutral gear position, i.e., when pull handle is in location of C, brake member 6 continues The second axial direction along axletree 12 moves a certain distance, protrudes from the circumferential brake tooth 61 of brake member 6 and is keeping off with setting The second protruding portion contact on position switching wheel 7, and drive gear switching wheel 7 mobile, so that gear switching wheel 7 is disconnected wheel 4, from And wheel is made to be in neutral gear position.The first return springs 9 contacted at this time with 6 other end of brake member continue along axletree 12 The second axial direction it is mobile, then store elastic potential energy；Exist with the second protruding portion 71 and setting being arranged on gear switching wheel 7 The first return springs 8 between accommodating cavity 71 in synchronizing wheel 5 are also moved along the second axial direction of axletree 12, store bullet Property potential energy.

In conjunction with shown in Fig. 5 and Fig. 7, after pressing brake switch 2, pull handle 1 rotates and bracing wire 3 is driven to discharge brake member 6, the The elastic potential energy release of two return springs 9 storage, drives brake member 6 to be moved to brake along the first axial direction of axletree 12 Tooth 61 is engaged with the second gear ring, and brake member 6 is resetted；The elastic potential energy release of first return springs 8 storage, drives gear Switching wheel 7 is also moved to the outer ring being arranged on gear switching wheel 7 along the first axial direction of axletree 12 and nibbles with the second gear ring It closes, gear switching wheel 7 is resetted.Brake switch return springs 21 drive brake switch 2 to reset, at this point, pull handle 1 is in A Position, brake member 6, gear switching wheel 7 and fifth wheel 4 engage simultaneously, so that wheel be made to be in braking state.

In the present embodiment, for the operation convenient for user, tri- positions A, B, C can be labeled in pull handle mounting base 3, user Only pull handle 1 need to be rotated according to tri- positions A, B, the C marked, i.e., controllable wheel is in braking state, generating state, neutral gear State；After pressing brake switch 2, pull handle 1 is in location A therewith, i.e. wheel is in braking state.It can be seen that this implementation Wheel gear shifting structure structure provided by with more gears is simple, easily operated, and brake, power generation and sky may be implemented Conversion between gear, function more optimize.

It is shown in Figure 11, present invention also provides a kind of perambulator, including external power generator, rear-wheel and above-mentioned reality The wheel gear shifting structure with more gears in example is applied, wherein rear-wheel includes left rear wheel and off hind wheel or rear-wheel is a single wheel Structure.In the present embodiment, shift control assembly is arranged on the body support of perambulator, is specifically located at user-friendly Position, such as handspike is nearby (position in figure centre circle).Due to the wheel gear shifting structure with more gears all features and Structure has elaborated in the above-described embodiments, and details are not described herein.

In conclusion in the wheel gear shifting structure and its perambulator with more gears provided herein, at pull handle 1 When location A, wheel is in braking state；When pull handle 1 is in B location, wheel is in generating state；When pull handle 1 is in C When setting, wheel is in neutral position state；After pressing brake switch 2, pull handle 1 is repositioned to location A, and wheel is in braking state.By , as it can be seen that it can satisfy the different demands of user with multiple-working mode, function more optimizes for this.

The foregoing is a further detailed description of the present application in conjunction with specific implementation manners, and it cannot be said that this Shen Specific implementation please is only limited to these instructions.For those of ordinary skill in the art to which this application belongs, it is not taking off Under the premise of from the design of the application utility model, a number of simple deductions or replacements can also be made.

Claims (10)

1. a kind of wheel gear shifting structure with more gears characterized by comprising shift control assembly, and along axletree (12) brake member (6) that first axial direction is set gradually, gear switching wheel (7), fifth wheel (4)；The fifth wheel (4) with Axletree (12) rotation connection, and connect with wheel drive；The brake member (6) can be along the movement of axletree (12) axial direction It is arranged on axletree (12), at least one brake tooth for protruding from brake member (6) circumferential direction is provided on the brake member (6) (61), the brake tooth (61) is for engaging fifth wheel (4)；The shift control assembly is for driving brake part (6) along wheel Second axial direction of axis (12) is mobile；The gear switching wheel (7) and external power generator are sequentially connected；The gear switching Wheel (7) engages after being in the first initial position with fifth wheel (4)；After the brake member (6) is in the second initial position, brake tooth (61) it is engaged with fifth wheel (4) to be braked to fifth wheel (4)；Control assembly driving brake part (6) are shifted gears along axletree (12) After second axial direction is moved to power generation position, brake tooth (61) and fifth wheel (4) are detached from, and fifth wheel (4) is by driving gear Switching wheel (7) rotation makes power generator generate electricity.

2. as described in claim 1 with the wheel gear shifting structure of more gears, which is characterized in that the gear switching wheel (7) It is arranged on axletree (12) and can be moved along axletree (12) axial direction；Control assembly driving brake part (6) are shifted gears from hair After electric position is moved to neutral gear position along the second axial direction, brake member (6) synchronous drive gear switching wheel (7) is moved to connection Wheel is detached from position, is detached from gear switching wheel (7) and fifth wheel (4).

3. as claimed in claim 2 with the wheel gear shifting structure of more gears, which is characterized in that the gear switching wheel (7) Side be provided with the gear ring for engaging with fifth wheel (4), the other side of the gear switching wheel (7) is equipped with inwardly projecting Switch first protruding portion of wheel (7) circumferential direction in gear；Brake member (6) is contacted with the first protruding portion to drive gear switching wheel (7) It is mobile.

4. as claimed in claim 3 with the wheel gear shifting structure of more gears, which is characterized in that further include: it covers and is cut in gear It changes on wheel (7), and switches the synchronizing wheel (5) that wheel (7) rotates coaxially with gear；On the other side of the gear switching wheel (7) also It is provided with to protrude outward and switches at least one second protruding portion (71) of wheel (7) circumferential direction in gear, be arranged on the synchronizing wheel (5) There is at least one accommodating cavity (51)；The accommodating cavity (51) for accommodate second protruding portion (71) the first initial position with Fifth wheel is detached between position and moves, and limits the second protruding portion (71) and circumferentially rotate；Gear switching wheel (7) passes through synchronizing wheel (5) It is sequentially connected with external power generator.

5. as claimed in claim 4 with the wheel gear shifting structure of more gears, which is characterized in that the shift control assembly packet It includes: pull handle (1), pull handle mounting base (11) and bracing wire (3)；The pull handle (1) is sequentially connected by bracing wire (3) and brake member (6)； The pull handle (1) is spindle rotationally arranged on the pull handle mounting base (11), and the pull handle (1) is by rotation to drive bracing wire (3), switch brake member (6) between the second initial position, power generation position and neutral gear position.

6. as claimed in claim 5 with the wheel gear shifting structure of more gears, which is characterized in that further include: it is used for gear At least one first return springs (8) and be used to reset brake member (6) that switching wheel (7) is reset on the first initial position The second return springs (9) on to the second initial position；The shift control assembly includes brake switch (2), the brake Switch (2) is used for while triggering the first return springs (8) switches wheel (7) reset to gear and the second return springs (9) are right Brake member (6) resets.

7. as claimed in claim 6 with the wheel gear shifting structure of more gears, which is characterized in that first return springs (8) setting is in accommodating cavity (51), and one end of which is fixed in accommodating cavity (51) cavity wall, the other end is fixed on gear switching wheel (7) On the end face of the other side.

8. as claimed in claim 6 with the wheel gear shifting structure of more gears, which is characterized in that further include brake fixing seat (10), brake fixing seat (10) is fixed on axletree (12), for being oriented to for the axial movement of brake member (6)；The brake It being provided on one end face of part (6) multiple leading arms (62), the brake tooth (61) is arranged in the end of the leading arm (62), And protrude from the circumferential direction of the brake member (6)；It is provided on the brake fixing seat (10) and is matched with the leading arm (62) Multiple guide grooves (101), the leading arm (62) passes through guide groove (101) and the brake member (6) is socketed in the brake In fixing seat (10)；The other end of the brake member (6) is contacted with the second return springs (9).

9. as described in claim 1 with the wheel gear shifting structure of more gears, which is characterized in that the fifth wheel (4) passes through Bearing (13) and axletree (12) are rotatablely connected, and radially ecto-entad is successively set on an end face of the fifth wheel (4) It is equipped with the first gear ring and the second gear ring；First gear ring be used for gear switch wheel (7) engage, second gear ring for Brake tooth (61) engagement.

10. a kind of perambulator, which is characterized in that including power generator, rear-wheel and tool as described in any one of claims 1-9 There is the wheel gear shifting structure of more gears；The rear-wheel is fixed on fifth wheel (4).